RU2838542C1 - Communication method and device - Google Patents

Abstract

FIELD: communication technique.

SUBSTANCE: access point generates a trigger frame, where the trigger frame includes a first user information field, part or all of the frequency domain resource indicated in the resource block allocation subfield in the fourth user information field before the first user information field is located in the primary channel of 160 MHz and part or all of the frequency domain resource indicated in the resource block allocation subfield in the fourth user information field after the first user information field is located in a secondary channel of 160 MHz. Access point then sends a trigger frame.

EFFECT: enabling accurate allocation of a frequency domain resource of a station in bandwidth of 320 MHz without changing the structure of the user information field in the triggering frame.

108 cl, 85 dwg, 7 tbl

Description

Field of technology to which the invention relates

The present application relates generally to the field of communication technologies and, in particular, to a communication method and device.

State of the art

The 802.11 standard is a common standard for wireless local area network (WLAN). Currently, the Institute of Electrical and Electronics Engineers (IEEE) is discussing the 802.11be standard, the next generation of 802.11ax. Compared with the previous 802.11ax standard, the 802.11be standard supports extremely high throughput (EHT) for data transmission. Hereinafter, a station that supports 802.11ax but does not support 802.11be is called a High Efficient (HE) station for short, and a station that supports 802.11be is called an EHT station for short.

In 802.11ax, an access point (AP) can initiate a station to transmit on the uplink using a trigger frame. In the scenario where 802.11 next generation is applicable, to ensure compatibility, a trigger frame should be used to initiate both the HE station and the EHT station to transmit on the uplink simultaneously.

In addition, the maximum transmission bandwidth supported by the 802.11ax standard is 160 MHz, and the maximum transmission bandwidth supported by the 802.11be standard is 320 MHz. In the scenario where the next generation 802.11 standard is applicable, to transmit a higher bandwidth, a trigger frame should be used to initiate the EHT station to perform uplink transmission in a bandwidth greater than 160 MHz.

Thus, how to make a trigger frame be able to initiate a station to perform uplink transmission in a bandwidth greater than 160 MHz while maintaining trigger frame compatibility is an urgent technical challenge that needs to be addressed in the communications industry.

The essence of the invention

The present application provides a method and apparatus for enabling a trigger frame to be able to trigger an EHT station to perform uplink transmission in a bandwidth exceeding 160 MHz while ensuring trigger frame compatibility.

According to a first aspect, a communication method is provided, including: generating a trigger frame, where the trigger frame includes a first user information field and one or more fourth user information fields; the fourth user information field includes a resource block allocation subfield, and the resource block allocation subfield indicates to allocate a frequency domain resource; a part or all of the frequency domain resource allocated by the resource block allocation subfield in the fourth user information field before the first user information field is located in a primary 160 MHz channel, and a part or all of the frequency domain resource allocated by the resource block allocation subfield in the fourth user information field after the first user information field is located in a secondary 160 MHz channel; and the fourth user information field is used to initiate the station to send a response frame; and sending the trigger frame.

Based on the above solution, on one hand, the first user information field exists in the user information list field of the trigger frame, and the first user information field can be used to define the 160 MHz frequency region in which the frequency region resource is specifically indicated by the resource block allocation subfield in another user information field, so that the resource block is allocated to the first station in the 320 MHz frequency region by using the trigger frame. On the other hand, there is no need to add one bit in the resource block allocation subfield in the fourth user information field. This ensures that the trigger frame provided in the present application can maintain compatibility with the trigger frame in the 802.11ax standard.

In a possible embodiment, the method further includes: receiving an uplink MAC frame of one or more stations, where the MAC frame is sent on a frequency domain resource allocated by the resource block allocation subfield in the fourth user information field; and then sending an acknowledgement frame.

In a possible embodiment, the value in the AID subfield in the first user information field is the first specified value, and the first specified value may be any of the values from 2008 to 2044 or from 2046 to 4095.

In a possible embodiment, the user information field whose value in the AID field is 4095 includes the first pointer field; if the value of the first pointer field is the first value, the user information field whose value in the AID field is 4095 is the user information field used to fill the startup frame; and if the value of the first pointer field is the second value, the user information field whose AID field is 4095 is the first user information field.

In a possible embodiment, the resource block allocation subfield occupies eight bits, bits B1-B7 in the eight bits together indicate the frequency domain resource used by the station, and bit B0 in the eight bits indicates whether part or all of the frequency domain resource allocated by bits B1-B7 is located in the primary 80 MHz channel or the secondary 80 MHz channel.

In a possible embodiment, the number of bits occupied by the first user information field coincides with the number of bits occupied by the user information field corresponding to the second station.

In a possible embodiment, the trigger frame includes a third user information field, the third user information field carries general information about the first station, and the first station supports the 802.11 standard after the 802.11ax standard. Thus, the trigger frame uses the third user information field to carry additional general information that must be read by the first station, so that there is no need to add a number of bits to the general information field of the trigger frame, thereby ensuring the compatibility of the trigger frame provided in the present application with the trigger frame in the 802.11ax standard. In other words, the trigger frame provided in the present application can initiate the first station to perform uplink transmission and can also initiate the second station to perform uplink transmission.

In a possible embodiment, the third user information field includes one or more of the following: (1) a first subfield, where the first subfield indicates an uplink bandwidth in combination with an uplink bandwidth subfield in a general information field of the trigger frame; (2) a second subfield, where the second subfield indicates a puncturing pattern; (3) a third subfield, where the third subfield indicates whether the first station transmits an HE PPDU or an EHT PPDU in one or more frequency segments of the uplink bandwidth; and (4) a fourth subfield, where the fourth subfield indicates a spatial reuse parameter supporting transmission in a bandwidth of 320 MHz.

In a possible embodiment, if the first subfield occupies one bit, the first subfield indicates the uplink bandwidth in combination with the uplink bandwidth subfield in the general information field of the trigger frame, including the following cases: when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the fourth value, the uplink bandwidth is 160 MHz; and when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the fifth value, the uplink bandwidth is 320 MHz.

In a possible embodiment, if the first subfield occupies two bits, the first subfield indicates the uplink bandwidth in combination with the uplink bandwidth subfield in the general information field of the trigger frame, including the following cases: when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the sixth value, the uplink bandwidth is 160 MHz; when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the seventh value, the uplink bandwidth is 240 MHz; and when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the eighth value, the uplink bandwidth is 320 MHz.

In a possible embodiment, the number of bits occupied by the General Information field of the trigger frame is the same as the number of bits occupied by the General Information field of the trigger frame in the 802.11ax standard.

According to a second aspect, a communication method is provided. The method includes: receiving a trigger frame, where the trigger frame includes a first user information field and one or more fourth user information fields; the fourth user information field includes a resource block allocation subfield, and the resource block allocation subfield indicates to allocate a frequency domain resource; a part or all of the frequency domain resource allocated by the resource block allocation subfield in the fourth user information field before the first user information field is located in a primary 160 MHz channel, and a part or all of the frequency domain resource allocated by the resource block allocation subfield in the fourth user information field after the first user information field is located in a secondary 160 MHz channel; and the fourth user information field is used to initiate the station to send a response frame; and parsing the trigger frame.

In a possible embodiment, the method further includes: sending an uplink MAC frame, where the MAC frame is sent on a frequency domain resource allocated by the resource block allocation subfield in the fourth user information field; and receiving an acknowledgement frame.

In a possible embodiment, the value in the AID subfield in the first user information field is the first specified value, and the first specified value may be any of the values from 2008 to 2044 or from 2046 to 4095.

In a possible embodiment, the user information field whose value in the AID field is 4095 includes the first pointer field; if the value of the first pointer field is the first value, the user information field whose value in the AID field is 4095 is the user information field used to fill the startup frame; and if the value of the first pointer field is the second value, the user information field whose AID field is 4095 is the first user information field.

In a possible embodiment, the resource block allocation subfield occupies eight bits, bits B1-B7 in the eight bits together indicate the frequency domain resource used by the station, and bit B0 in the eight bits indicates whether part or all of the frequency domain resource allocated by bits B1-B7 is located in the primary 80 MHz channel or in the secondary 80 MHz channel.

In a possible embodiment, the number of bits occupied by the first user information field coincides with the number of bits occupied by the user information field corresponding to the second station.

In a possible embodiment, the startup frame includes a third user information field, the third user information field carries general information about the first station, and the first station supports the 802.11 standard after the 802.11ax standard.

In a possible embodiment, the third user information field includes one or more of the following: (1) a first subfield, where the first subfield indicates an uplink bandwidth in combination with an uplink bandwidth subfield in a general information field of the trigger frame; (2) a second subfield, where the second subfield indicates a puncturing pattern; (3) a third subfield, where the third subfield indicates whether the first station transmits an HE PPDU or an EHT PPDU in one or more frequency segments of the uplink bandwidth; and (4) a fourth subfield, where the fourth subfield indicates a spatial reuse parameter supporting transmission in a bandwidth of 320 MHz.

In a possible embodiment, if the first subfield occupies one bit, the first subfield indicates the uplink bandwidth in combination with the uplink bandwidth subfield in the general information field of the trigger frame, including the following cases: when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the fourth value, the uplink bandwidth is 160 MHz; and when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the fifth value, the uplink bandwidth is 320 MHz.

In a possible embodiment, if the first subfield occupies two bits, the first subfield indicates the uplink bandwidth in combination with the uplink bandwidth subfield in the general information field of the trigger frame, including the following cases: when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the sixth value, the uplink bandwidth is 160 MHz; when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the seventh value, the uplink bandwidth is 240 MHz; and when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the eighth value, the uplink bandwidth is 320 MHz.

In a possible embodiment, the number of bits occupied by the General Information field of the trigger frame is the same as the number of bits occupied by the General Information field of the trigger frame in the 802.11ax standard.

According to a third aspect, a communication method is provided. The method includes: generating a trigger frame, where the trigger frame includes a third user information field, the third user information field contains general information about a first station, and the first station supports the 802.11 standard after the 802.11ax standard; and then sending the trigger frame.

In a possible embodiment, the method further includes: receiving an uplink MAC frame from one or more stations, where the MAC frame is sent on a frequency domain resource allocated by the resource block allocation subfield in the fourth user information field; and then sending an acknowledgement frame.

In a possible embodiment, the third user information field includes one or more of the following: (1) a first subfield, where the first subfield indicates an uplink bandwidth in combination with an uplink bandwidth subfield in a general information field of the trigger frame; (2) a second subfield, where the second subfield indicates a puncturing pattern; (3) a third subfield, where the third subfield indicates whether the first station transmits an HE PPDU or an EHT PPDU in one or more frequency segments of the uplink bandwidth; and (4) a fourth subfield, where the fourth subfield indicates a spatial reuse parameter supporting transmission in a bandwidth of 320 MHz.

In a possible embodiment, if the first subfield occupies one bit, the first subfield indicates the uplink bandwidth in combination with the uplink bandwidth subfield in the general information field of the trigger frame, including the following cases: when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the fourth value, the uplink bandwidth is 160 MHz; and when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the fifth value, the uplink bandwidth is 320 MHz.

In a possible embodiment, if the first subfield occupies two bits, the first subfield indicates the uplink bandwidth in combination with the uplink bandwidth subfield in the general information field of the trigger frame, including the following cases: when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the sixth value, the uplink bandwidth is 160 MHz; when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the seventh value, the uplink bandwidth is 240 MHz; and when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the eighth value, the uplink bandwidth is 320 MHz.

In a possible embodiment, the number of bits occupied by the General Information field of the trigger frame is the same as the number of bits occupied by the General Information field of the trigger frame in the 802.11ax standard.

In a possible embodiment, the trigger frame includes a first user information field and one or more fourth user information fields; the fourth user information field includes a resource block allocation subfield, and the resource block allocation subfield indicates to allocate a frequency domain resource; a portion or all of the frequency domain resource allocated by the resource block allocation subfield in the fourth user information field before the first user information field is located in a primary 160 MHz channel, and a portion or all of the frequency domain resource allocated by the resource block allocation subfield in the fourth user information field after the first user information field is located in a secondary 160 MHz channel; and the fourth user information field is used to initiate the station to send a response frame.

In a possible embodiment, the value in the AID subfield in the first user information field is the first specified value, and the first specified value may be any of the values from 2008 to 2044 or from 2046 to 4095.

In a possible embodiment, the user information field whose value in the AID field is 4095 includes the first pointer field; if the value of the first pointer field is the first value, the user information field whose value in the AID field is 4095 is the user information field used to fill the startup frame; and if the value of the first pointer field is the second value, the user information field whose AID field is 4095 is the first user information field.

In a possible embodiment, the resource block allocation subfield occupies eight bits, bits B1-B7 in the eight bits together indicate the frequency domain resource used by the station, and bit B0 in the eight bits indicates whether part or all of the frequency domain resource allocated by bits B1-B7 is located in the primary 80 MHz channel or in the secondary 80 MHz channel.

In a possible embodiment, the number of bits occupied by the first user information field coincides with the number of bits occupied by the user information field corresponding to the second station.

According to a fourth aspect, a communication method is provided. The method includes: receiving a trigger frame, where the trigger frame includes a third user information field, the third user information field contains general information about a first station, and the first station supports the 802.11 standard after the 802.11ax standard; and then parsing the trigger frame.

In a possible embodiment, the method further includes: sending an uplink MAC frame, where the MAC frame is sent on a frequency domain resource allocated by the resource block allocation subfield in the fourth user information field; and receiving an acknowledgement frame.

In a possible embodiment, the third user information field includes one or more of the following: (1) a first subfield, where the first subfield indicates an uplink bandwidth in combination with an uplink bandwidth subfield in a general information field of the trigger frame; (2) a second subfield, where the second subfield indicates a puncturing pattern; (3) a third subfield, where the third subfield indicates whether the first station transmits an HE PPDU or an EHT PPDU in one or more frequency segments of the uplink bandwidth; and (4) a fourth subfield, where the fourth subfield indicates a spatial reuse parameter supporting transmission in a bandwidth of 320 MHz.

In a possible embodiment, if the first subfield occupies one bit, the first subfield indicates the uplink bandwidth in combination with the uplink bandwidth subfield in the general information field of the trigger frame, including the following cases: when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the fourth value, the uplink bandwidth is 160 MHz; and when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the fifth value, the uplink bandwidth is 320 MHz.

In a possible embodiment, if the first subfield occupies two bits, the first subfield indicates the uplink bandwidth in combination with the uplink bandwidth subfield in the general information field of the trigger frame, including the following cases: when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the sixth value, the uplink bandwidth is 160 MHz; when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the seventh value, the uplink bandwidth is 240 MHz; and when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the eighth value, the uplink bandwidth is 320 MHz.

In a possible embodiment, the number of bits occupied by the General Information field of the trigger frame is the same as the number of bits occupied by the General Information field of the trigger frame in the 802.11ax standard.

In a possible embodiment, the trigger frame includes a first user information field and one or more fourth user information fields; the fourth user information field includes a resource block allocation subfield, and the resource block allocation subfield indicates to allocate a frequency domain resource; a portion or all of the frequency domain resource allocated by the resource block allocation subfield in the fourth user information field before the first user information field is located in a primary 160 MHz channel, and a portion or all of the frequency domain resource allocated by the resource block allocation subfield in the fourth user information field after the first user information field is located in a secondary 160 MHz channel; and the fourth user information field is used to initiate the station to send a response frame.

In a possible embodiment, the value in the AID subfield in the first user information field is the first specified value, and the first specified value may be any of the values from 2008 to 2044 or from 2046 to 4095.

In a possible embodiment, the user information field whose value in the AID field is 4095 includes the first pointer field; if the value of the first pointer field is the first value, the user information field whose value in the AID field is 4095 is the user information field used to fill the startup frame; and if the value of the first pointer field is the second value, the user information field whose AID field is 4095 is the first user information field.

In a possible embodiment, the resource block allocation subfield occupies eight bits, bits B1-B7 in the eight bits together indicate the frequency domain resource used by the station, and bit B0 in the eight bits indicates whether part or all of the frequency domain resource allocated by bits B1-B7 is located in the primary 80 MHz channel or in the secondary 80 MHz channel.

In a possible embodiment, the number of bits occupied by the first user information field coincides with the number of bits occupied by the user information field corresponding to the second station.

According to a fifth aspect, a communication method is provided. The method includes: generating a downlink PPDU, where the downlink PPDU includes a MAC frame corresponding to one or more first stations; the MAC frame corresponding to the first station includes a TRS control field, the TRS control field includes a control information field, the control information field includes a resource block allocation subfield, and all or part of the frequency domain resource indicated by the resource block of the allocation subfield is located in a 160 MHz channel on which the MAC frame is transmitted, which carries the resource block allocation field in the TRS control field; and then sending the PPDU on the downlink.

In a possible embodiment, the method additionally includes: receiving a response frame sent by one or more stations.

According to a sixth aspect, a communication method is provided. The method includes: receiving a downlink PPDU, where the downlink PPDU includes a MAC frame corresponding to one or more first stations, the MAC frame corresponding to the first station includes a TRS control field, the TRS control field includes a control information field, the control information field includes a resource block allocation subfield, and all or part of the frequency domain resource indicated in the resource block allocation subfield is located in a 160 MHz channel on which the MAC frame is transmitted, which carries the resource block allocation field in the TRS control field; and then performing syntactic analysis of the downlink PPDU.

In a possible embodiment, the method additionally includes: sending a response frame.

According to a seventh aspect, a communication device is provided, including a processing unit and a communication unit. The processing unit is configured to generate a trigger frame, where the trigger frame includes a first user information field and one or more fourth user information fields; the fourth user information field includes a resource block allocation subfield, and the resource block allocation subfield indicates to allocate a frequency domain resource; a part or the entire frequency domain resource allocated by the resource block allocation subfield in the fourth user information field before the first user information field is located in a primary 160 MHz channel, and a part or the entire frequency domain resource allocated by the resource block allocation subfield in the fourth user information field after the first user information field is located in a secondary 160 MHz channel; and the fourth user information field is used to initiate the station to send a response frame. The communication unit is configured to send the trigger frame.

In a possible embodiment, the communication unit is further configured to: receive an uplink MAC frame from one or more stations, where the MAC frame is sent on a frequency domain resource allocated by the resource block allocation subfield in the fourth user information field; and then send an acknowledgement frame.

In a possible embodiment, the value in the AID subfield in the first user information field is the first specified value, and the first specified value is any of the values from 2008 to 2044 or from 2046 to 4095.

In a possible embodiment, the user information field whose value in the AID field is 4095 includes the first pointer field; if the value of the first pointer field is the first value, the user information field whose value in the AID field is 4095 is the user information field used to fill the startup frame; and if the value of the first pointer field is the second value, the user information field whose AID field is 4095 is the first user information field.

In a possible embodiment, the resource block allocation subfield occupies eight bits, bits B1-B7 in the eight bits together indicate the frequency domain resource used by the station, and bit B0 in the eight bits indicates whether part or all of the frequency domain resource allocated by bits B1-B7 is located in the primary 80 MHz channel or in the secondary 80 MHz channel.

In a possible embodiment, the number of bits occupied by the first user information field coincides with the number of bits occupied by the user information field corresponding to the second station.

In a possible embodiment, the startup frame includes a third user information field, the third user information field carries general information about the first station, and the first station supports the 802.11 standard after the 802.11ax standard.

In a possible embodiment, the third user information field includes one or more of the following: (1) a first subfield, where the first subfield indicates an uplink bandwidth in combination with an uplink bandwidth subfield in a general information field of the trigger frame; (2) a second subfield, where the second subfield indicates a puncturing pattern; (3) a third subfield, where the third subfield indicates whether the first station transmits an HE PPDU or an EHT PPDU in one or more frequency segments of the uplink bandwidth; and (4) a fourth subfield, where the fourth subfield indicates a spatial reuse parameter supporting transmission in a bandwidth of 320 MHz.

In a possible embodiment, if the first subfield occupies one bit, the first subfield indicates the uplink bandwidth in combination with the uplink bandwidth subfield in the general information field of the trigger frame, including the following cases: when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the fourth value, the uplink bandwidth is 160 MHz; and when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the fifth value, the uplink bandwidth is 320 MHz.

In a possible embodiment, if the first subfield occupies two bits, the first subfield indicates the uplink bandwidth in combination with the uplink bandwidth subfield in the general information field of the trigger frame, including the following cases: when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the sixth value, the uplink bandwidth is 160 MHz; when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the seventh value, the uplink bandwidth is 240 MHz; and when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the eighth value, the uplink bandwidth is 320 MHz.

In a possible embodiment, the number of bits occupied by the General Information field of the trigger frame is the same as the number of bits occupied by the General Information field of the trigger frame in the 802.11ax standard.

According to an eighth aspect, a communication device is provided, including a processing unit and a communication unit. The communication unit is configured to receive a trigger frame, where the trigger frame includes a first user information field and one or more fourth user information fields; the fourth user information field includes a resource block allocation subfield, and the resource block allocation subfield indicates to allocate a frequency domain resource; a part or all of the frequency domain resource allocated by the resource block allocation subfield in the fourth user information field before the first user information field is located in a primary 160 MHz channel, and a part or all of the frequency domain resource allocated by the resource block allocation subfield in the fourth user information field after the first user information field is located in a secondary 160 MHz channel; and the fourth user information field is used to initiate the station to send a response frame. The processing unit is configured to parse the trigger frame.

In a possible embodiment, the communication unit is additionally configured to: send an uplink MAC frame, where the MAC frame is sent on a frequency domain resource allocated by the resource block allocation subfield in the fourth user information field; and receive an acknowledgement frame.

In a possible embodiment, the value in the AID subfield in the first user information field is the first specified value, and the first specified value is any of the values from 2008 to 2044 or from 2046 to 4095.

In a possible embodiment, the user information field whose value in the AID field is 4095 includes the first pointer field; if the value of the first pointer field is the first value, the user information field whose value in the AID field is 4095 is the user information field used to fill the startup frame; and if the value of the first pointer field is the second value, the user information field whose AID field is 4095 is the first user information field.

In a possible embodiment, the resource block allocation subfield occupies eight bits, bits B1-B7 in the eight bits together indicate the frequency domain resource used by the station, and bit B0 in the eight bits indicates whether part or all of the frequency domain resource allocated by bits B1-B7 is located in the primary 80 MHz channel or in the secondary 80 MHz channel.

In a possible embodiment, the number of bits occupied by the first user information field coincides with the number of bits occupied by the user information field corresponding to the second station.

In a possible embodiment, the startup frame includes a third user information field, the third user information field carries general information about the first station, and the first station supports the 802.11 standard after the 802.11ax standard.

In a possible embodiment, the third user information field includes one or more of the following: (1) a first subfield, where the first subfield indicates an uplink bandwidth in combination with an uplink bandwidth subfield in a general information field of the trigger frame; (2) a second subfield, where the second subfield indicates a puncturing pattern; (3) a third subfield, where the third subfield indicates whether the first station transmits an HE PPDU or an EHT PPDU in one or more frequency segments of the uplink bandwidth; and (4) a fourth subfield, where the fourth subfield indicates a spatial reuse parameter supporting transmission in a bandwidth of 320 MHz.

In a possible embodiment, if the first subfield occupies one bit, the first subfield indicates the uplink bandwidth in combination with the uplink bandwidth subfield in the general information field of the trigger frame, including the following cases: when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the fourth value, the uplink bandwidth is 160 MHz; and when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the fifth value, the uplink bandwidth is 320 MHz.

In a possible embodiment, if the first subfield occupies two bits, the first subfield indicates the uplink bandwidth in combination with the uplink bandwidth subfield in the general information field of the trigger frame, including the following cases: when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the sixth value, the uplink bandwidth is 160 MHz; when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the seventh value, the uplink bandwidth is 240 MHz; and when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the eighth value, the uplink bandwidth is 320 MHz.

In a possible embodiment, the number of bits occupied by the General Information field of the trigger frame is the same as the number of bits occupied by the General Information field of the trigger frame in the 802.11ax standard.

According to the ninth aspect, a communication device is provided, including a processing unit and a communication unit. The processing unit is configured to generate a trigger frame, where the trigger frame includes a third user information field, the third user information field contains general information about the first station, and the first station supports the 802.11 standard after the 802.11ax standard. The communication unit is configured to send the trigger frame.

In a possible embodiment, the communication unit is further configured to: receive an uplink MAC frame from one or more stations, where the MAC frame is sent on a frequency domain resource allocated by the resource block allocation subfield in the fourth user information field; and then send an acknowledgement frame.

In a possible embodiment, the third user information field includes one or more of the following: (1) a first subfield, where the first subfield indicates an uplink bandwidth in combination with an uplink bandwidth subfield in a general information field of the trigger frame; (2) a second subfield, where the second subfield indicates a puncturing pattern; (3) a third subfield, where the third subfield indicates whether the first station transmits an HE PPDU or an EHT PPDU in one or more frequency segments of the uplink bandwidth; and (4) a fourth subfield, where the fourth subfield indicates a spatial reuse parameter supporting transmission in a bandwidth of 320 MHz.

In a possible embodiment, if the first subfield occupies one bit, the first subfield indicates the uplink bandwidth in combination with the uplink bandwidth subfield in the general information field of the trigger frame, including the following cases: when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the fourth value, the uplink bandwidth is 160 MHz; and when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the fifth value, the uplink bandwidth is 320 MHz.

In a possible embodiment, if the first subfield occupies two bits, the first subfield indicates the uplink bandwidth in combination with the uplink bandwidth subfield in the general information field of the trigger frame, including the following cases: when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the sixth value, the uplink bandwidth is 160 MHz; when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the seventh value, the uplink bandwidth is 240 MHz; and when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the eighth value, the uplink bandwidth is 320 MHz.

In a possible embodiment, the number of bits occupied by the General Information field of the trigger frame is the same as the number of bits occupied by the General Information field of the trigger frame in the 802.11ax standard.

In a possible embodiment, the trigger frame includes a first user information field and one or more fourth user information fields; the fourth user information field includes a resource block allocation subfield, and the resource block allocation subfield indicates to allocate a frequency domain resource; a portion or all of the frequency domain resource allocated by the resource block allocation subfield in the fourth user information field before the first user information field is located in a primary 160 MHz channel, and a portion or all of the frequency domain resource allocated by the resource block allocation subfield in the fourth user information field after the first user information field is located in a secondary 160 MHz channel; and the fourth user information field is used to initiate the station to send a response frame.

In a possible embodiment, the value in the AID subfield in the first user information field is the first specified value, and the first specified value is any of the values from 2008 to 2044 or from 2046 to 4095.

In a possible embodiment, the user information field whose value in the AID field is 4095 includes the first pointer field; if the value of the first pointer field is the first value, the user information field whose value in the AID field is 4095 is the user information field used to fill the startup frame; and if the value of the first pointer field is the second value, the user information field whose AID field is 4095 is the first user information field.

In a possible embodiment, the resource block allocation subfield occupies eight bits, bits B1-B7 in the eight bits together indicate the frequency domain resource used by the station, and bit B0 in the eight bits indicates whether part or all of the frequency domain resource allocated by bits B1-B7 is located in the primary 80 MHz channel or in the secondary 80 MHz channel.

In a possible embodiment, the number of bits occupied by the first user information field coincides with the number of bits occupied by the user information field corresponding to the second station.

According to the tenth aspect, a communication device is provided, including a processing unit and a communication unit. The communication unit is configured to receive a trigger frame, where the trigger frame includes a third user information field, the third user information field carries general information about the first station, and the first station supports the 802.11 standard after the 802.11ax standard. The processing unit is configured to parse the trigger frame.

In a possible embodiment, the communication unit is additionally configured to: send an uplink MAC frame, where the MAC frame is sent on a frequency domain resource allocated by the resource block allocation subfield in the fourth user information field; and receive an acknowledgement frame.

In a possible embodiment, the third user information field includes one or more of the following: (1) a first subfield, where the first subfield indicates an uplink bandwidth in combination with an uplink bandwidth subfield in a general information field of the trigger frame; (2) a second subfield, where the second subfield indicates a puncturing pattern; (3) a third subfield, where the third subfield indicates whether the first station transmits an HE PPDU or an EHT PPDU in one or more frequency segments of the uplink bandwidth; and (4) a fourth subfield, where the fourth subfield indicates a spatial reuse parameter supporting transmission in a bandwidth of 320 MHz.

In a possible embodiment, if the first subfield occupies one bit, then the first subfield indicates the uplink bandwidth in combination with the uplink bandwidth subfield in the general information field of the trigger frame, including the following cases: when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the fourth value, the uplink bandwidth is 160 MHz; and when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the fifth value, the uplink bandwidth is 320 MHz.

In a possible embodiment, if the first subfield occupies two bits, the first subfield indicates the uplink bandwidth in combination with the uplink bandwidth subfield in the general information field of the trigger frame, including the following cases: when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the sixth value, the uplink bandwidth is 160 MHz; when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the seventh value, the uplink bandwidth is 240 MHz; and when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the eighth value, the uplink bandwidth is 320 MHz.

In a possible embodiment, the number of bits occupied by the General Information field of the trigger frame is the same as the number of bits occupied by the General Information field of the trigger frame in the 802.11ax standard.

In a possible embodiment, the trigger frame includes a first user information field and one or more fourth user information fields; the fourth user information field includes a resource block allocation subfield, and the resource block allocation subfield indicates to allocate a frequency domain resource; a portion or all of the frequency domain resource allocated by the resource block allocation subfield in the fourth user information field before the first user information field is located in a primary 160 MHz channel, and a portion or all of the frequency domain resource allocated by the resource block allocation subfield in the fourth user information field after the first user information field is located in a secondary 160 MHz channel; and the fourth user information field is used to initiate the station to send a response frame.

In a possible embodiment, the value in the AID subfield in the first user information field is the first specified value, and the first specified value may be any of the values from 2008 to 2044 or from 2046 to 4095.

In a possible embodiment, the user information field whose value in the AID field is 4095 includes the first pointer field; if the value of the first pointer field is the first value, the user information field whose value in the AID field is 4095 is the user information field used to fill the startup frame; and if the value of the first pointer field is the second value, the user information field whose AID field is 4095 is the first user information field.

In a possible embodiment, the resource block allocation subfield occupies eight bits, bits B1-B7 in the eight bits together indicate the frequency domain resource used by the station, and bit B0 in the eight bits indicates whether part or all of the frequency domain resource allocated by bits B1-B7 is located in the primary 80 MHz channel or in the secondary 80 MHz channel.

In a possible embodiment, the number of bits occupied by the first user information field coincides with the number of bits occupied by the user information field corresponding to the second station.

According to an eleventh aspect, a communication device is provided, including a processing unit and a communication unit. The processing unit is configured to generate a downlink PPDU, where the downlink PPDU includes a MAC frame corresponding to one or more first stations; the MAC frame corresponding to the first station includes a TRS control field, the TRS control field includes a control information field, the control information field includes a resource block allocation subfield, and all or part of the frequency domain resource indicated by the resource block allocation subfield is located in a 160 MHz channel, over which the MAC frame is transmitted, which carries the resource block allocation field in the TRS control field. The communication unit is configured to send the PPDU over the downlink.

In a possible embodiment, the communication unit is additionally configured to receive a response frame sent by one or more stations.

According to a twelfth aspect, a communication device is provided, including a processing unit and a communication unit. The processing unit is configured to receive a downlink PPDU, where the downlink PPDU includes a MAC frame corresponding to one or more first stations; the MAC frame corresponding to the first station includes a TRS control field, the TRS control field includes a control information field, the control information field includes a resource block allocation subfield, and all or part of the frequency domain resource indicated by the resource block allocation subfield is located in a 160 MHz channel, over which the MAC frame is transmitted, which carries the resource block allocation field in the TRS control field. The processing unit is configured to parse the downlink PPDU.

In a possible embodiment, the processing unit is additionally configured to send a response frame.

According to the thirteenth aspect, a communication device is provided. The communication device includes a processor and a communication interface, and the processor and the communication interface are configured to implement any method provided in any of the first to sixth aspects. The processor is configured to perform a processing action in the corresponding method, and the communication interface is configured to perform a receiving/sending action in the corresponding method.

According to the fourteenth aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a computer, the computer is able to perform any method provided in any of the first to sixth aspects.

According to the fifteenth aspect, there is provided a computer program product including computer instructions. When the computer instructions are executed on a computer, the computer is enabled to perform any method provided in any of the first to sixth aspects.

According to the sixteenth aspect, a microcircuit is provided, including a processing circuit and a transceiver terminal. The processing circuit and the transceiver terminal are configured to implement any method provided in any of the first to sixth aspects. The processing circuit is configured to perform a processing action in a corresponding manner, and the transceiver terminal is configured to perform a receiving/sending action in a corresponding manner.

It should be noted that the technical effect provided by any variant in the seventh aspect to the sixteenth aspect is related to the technical effect provided by the corresponding variant in the first aspect to the sixth aspect. The details are not described again here.

Brief description of the drawings

Fig. 1 - schematic representation of the subcarrier distribution in the 80 MHz frequency segment in the 802.11ax standard;

Fig. 2 - schematic representation of the subcarrier distribution in the 80 MHz frequency segment in the 802.11be standard;

Fig. 3 - schematic representation of the channel allocation status in the 160 MHz bandwidth;

Fig. 4 is a flow chart of the sequence of operations of the method for scheduled uplink transmission based on a trigger;

Fig. 5 - schematic representation of the format of the launch frame in the 802.11ax standard;

Fig. 6 - schematic representation of the structure of the general information field of the launch frame in the 802.11ax standard;

Fig. 7 - schematic representation of the structure of the user information field of the launch frame in the 802.11ax standard;

Fig. 8 is a flow chart of the sequence of operations of the communication method according to an embodiment of the present application;

Fig. 9 is a schematic representation of the structure of a user information list field according to an embodiment of the present application;

Fig. 10 - Fig. 25 - schematic representations of combinations of small resource blocks according to an embodiment of the present application;

Fig. 26 - Fig. 29 - schematic representations of combinations of large resource blocks in a bandwidth of 80 MHz according to an embodiment of the present application;

Fig. 30 - Fig. 41 - schematic representations of combinations of large resource blocks in a 160 MHz bandwidth according to an embodiment of the present application;

Fig. 42 - Fig. 50 - schematic representations of combinations of large resource blocks in a 240 MHz bandwidth according to an embodiment of the present application;

Fig. 51 - Fig. 62 - schematic representations of combinations of large resource blocks in a 320 MHz bandwidth according to an embodiment of the present application;

Fig. 63 is a schematic representation of the structure of a user information list field according to an embodiment of the present application;

Fig. 64 is a schematic representation of the structure of a user information list field according to an embodiment of the present application;

Fig. 65 is a schematic diagram of the structure of an uplink multi-user PPDU according to an embodiment of the present application;

Fig. 66 - schematic representation of the structure of the control information field in the 802.11ax standard;

Fig. 67 is a flow chart of the sequence of operations of a communication method according to an embodiment of the present application;

Fig. 68 is a schematic representation of the structure of a communication device according to an embodiment of the present application;

Fig. 69 is a schematic representation of the structure of a communication device according to an embodiment of the present application;

Fig. 70 - Fig. 81 - other schematic representations of combinations of large resource blocks in a 320 MHz bandwidth according to an embodiment of the present application; and

Fig. 82 - Fig. 85 - other schematic representations of combinations of small resource blocks according to an embodiment of the present application.

Detailed description of the invention

In the descriptions of this application, unless otherwise specified, "/" means "or". For example, A/B may represent A or B. The term "and/or" in this specification only describes the association relationship between associated objects and indicates that there may be three relationships. For example, A and/or B may represent the following three cases: only A exists, both A and B exist, and only B exists. In addition, "at least one" means one or more, and "a plurality" means two or more. Terms such as "first" and "second" do not limit the number and sequence of execution, and terms such as "first" and "second" do not indicate a specific distinction.

In this application, words such as "example" or "for example" are used to provide an example, illustration or description. Any embodiment or design described as "example" or "for example" in this application should not be explained as being more preferable or having more advantages than another embodiment or design. In particular, the use of the word "example", "for example" and the like is intended to present a relative concept in a certain way.

The technical solutions provided in this application may be further applied to a WLAN scenario and may be applied to an IEEE 802.11 system standard, such as the next generation 802.11be standard of the IEEE 802.11ax standard or the next next generation standard. The application scenarios of the technical solutions of this application include: communication between an access point (AP) and a station (STA), communication between APs and communication between STAs, and the like.

STAs in this application may be various user terminals, user devices, access devices, subscriber stations, subscriber devices, mobile stations, user agents, user devices or other devices that have a wireless communication function. User terminals may include various portable devices, devices installed on vehicles, wearable devices, computing devices that have a wireless communication function, or other processing devices connected to a wireless modem, and may include various forms of user equipment (UE), mobile stations (MS), terminals, terminal devices (terminal equipment), portable communication devices, handheld devices, portable computing devices, entertainment devices, gaming devices or global positioning system systems and devices or any other suitable device configured to perform network communication via a wireless medium. In this document, for ease of description, the above-mentioned devices are collectively referred to as stations or STAs.

An access point (AP) in the present application is a device that is deployed in a wireless communication network and that provides a wireless communication function for a STA communicating with the AP. An access point (AP) can be used as a hub of a communication system and can be a communication device such as a base station, a router, a gateway, a repeater, a communication server, a switch, or a bridge. A base station can include various forms of macro base stations, micro base stations, relay stations, and the like. In this document, for ease of description, the devices mentioned above are collectively referred to as access points (AP).

In this application, in order to facilitate the understanding of the technical solutions presented in this application, a brief description of terms is first provided below.

1. Abbreviations of terms used in this application

Table 1

English abbreviation Full English expression/standard English term Chinese expression/Chinese term AC Access category Access category AP Access point Access point CRC Cyclic redundancy code Cyclic redundancy code CS Carrier Measurement Carrier sensing DCM Dual coding modulation Dual-carrier modulation FEC Proactive error management Forward error control HE-SIGA/B Highly efficient A/B signal field High efficient signal field A/B HE-STF Highly effective short training field High efficient short training field HE-LTF Highly effective long learning field High efficient long training field ID Identifier Identifier L-STF Inherited Short Training Field Legacy short training field L-LTF Inherited Long Training Field Legacy long training field L-SIG Inherited signal field A Legacy signal field MAC Environment Access Management Medium access control MCS Modulation and coding scheme Modulation and coding scheme MIMO Multi-channel input - multi-channel output Multiple-input multiple-output MPDU Media Access Control (MAC) Protocol Data Unit Media access control protocol data unit M.U. Multiplayer Multiple users N.G. Next generation Next generation NSTs Number of spatial and temporal flows Number of spatial and time streams OFDM Orthogonal frequency division multiplexing Orthogonal frequency division multiplexing OFDMA Orthogonal Frequency Division Multiple Access Orthogonal frequency division multiple access PHY Physical Physical PPDU PHY Protocol Data Block PHY protocol data unit PSDU PHY Service Data Block PHY service data unit EN Resource distribution Resource unit STA Station Station SS Spatial flow Spatial stream T.B. Based on trigger Trigger based TID Traffic ID Traffic identifier UL/DL Uplink/Downlink Uplink/Downlink WLAN Wireless Local Area Network Wireless Local Access Network

2. 802.11 standards

WLAN starts with 802.11a/g, followed by 802.11n and 802.11ac, and then 802.11ax and 802.11be, which are currently under discussion. The allowed bandwidths and supported maximum data rates of 802.11a/g, 802.11n, 802.11ac, 802.11ax, and 802.11be are listed in Table 2.

Table 2

802.11a/g 802.11n (HT) 802.11ac (VHT) 802.11ax (HE) 802.11be (EHT) Bandwidth 20 MHz 20/40 MHz 20/40/80/160 MHz 20/40/80/160 MHz 20/40/80/160/240/320 MHz Supported maximum data transfer rates 54 Mbps 600 Mbps 6.9 Gbps 9.6 Gbps Not less than 30 Gbps

The 802.11n standard is also referred to as High Throughput (HT), 802.11ac is referred to as Very High Throughput (VHT), 802.11ax (Wi-Fi 6) is referred to as HE, and 802.11be (Wi-Fi 7) is referred to as Extremely High Throughput (EHT). Standards before HT, such as 802.11a/b/g, are collectively referred to as Low Throughput (Non-HT). 802.11b uses orthogonal frequency division multiplexing (OFDM) mode. Therefore, 802.11b is not listed in Table 2.

3. Channel

A channel is a frequency domain resource. A channel may have another name, such as a frequency band, a frequency segment, or a frequency domain. Embodiments of the present application are not limited to this. Currently, a WLAN system defines a variety of channel bandwidth values, such as 20 MHz, 40 MHz, 80 MHz, 160 MHz, and 320 MHz. For ease of description, a channel whose bandwidth value is x may be referred to as an x MHz channel for brevity. For example, a 320 MHz channel is a channel whose bandwidth value is 320 MHz.

The 320 MHz bandwidth and the 160 MHz bandwidth may further include discontinuous frequency segments. For example, the 320 MHz bandwidth shape is a 160+160 MHz channel, and the 160+160 MHz channel is a channel that includes two discontinuous 160 MHz subchannels.

4.RU

RU is a frequency domain resource. RU includes one or more subcarriers (tone). Currently, the following RU types are defined in the WLAN system: 26-tone RU (i.e., one RU includes 26 subcarriers), 52-tone RU (i.e., one RU includes 52 subcarriers), 106-tone RU (i.e., one RU includes 106 subcarriers), 242-tone RU (i.e., one RU includes 242 subcarriers), 484-tone RU (i.e., one RU includes 484 subcarriers), 996-tone RU (i.e., one RU includes 996 subcarriers), 2x996-tone RU (i.e., one RU includes 2 x 996 subcarriers), 4x996-tone RU (i.e., one RU includes 4 x 996 subcarriers), etc. If necessary, the WLAN system can additionally have a 3x996-tone RU (i.e. one RU includes 3 x 996 subcarriers).

5. Subcarrier

The subcarrier is a frequency domain resource. The subcarrier includes a zero subcarrier, a data subcarrier, a pilot subcarrier, a guard subcarrier, and a DC subcarrier.

6. Subcarrier allocation in the 80 MHz frequency segment in the 802.11ax standard

As shown in Fig. 1, an 80 MHz channel in the 802.11ax standard may support a 26-tone RU, a 52-tone RU, a 106-tone RU, a 242-tone RU, a 484-tone RU, and a 996-tone RU. In particular, an 80 MHz channel may include one 996-tone RU. Alternatively, an 80 MHz channel may include one or more 26-tone RUs, one or more 52-tone RUs, one or more 106-tone RUs, one or more 242-tone RUs, and/or one or more 484-tone RUs.

When Fig. 1 is positioned vertically, the leftmost part of Fig. 1 can be considered the lowest frequency, and the rightmost part of Fig. 1 can be considered the highest frequency. The 26-tone RUs in the 80 MHz channel can be numbered respectively from left to right to obtain RU 1 through RU 37. The 52-tone RUs in the 80 MHz channel can also be numbered respectively from left to right to obtain RU 1 through RU 16. The 106-tone RUs in the 80 MHz channel can also be numbered respectively from left to right to obtain RU 1 through RU 8. The 242-tone RUs in the 80 MHz channel can also be numbered respectively from left to right to obtain RU 1 through RU 4. The 484-tone RUs in the 80 MHz channel can also be numbered respectively from left to right to obtain RU 1 and RU 2. The 996-tone RU in the 80 MHz channel can also be numbered from left to right to obtain RU 1. The above numbers can alternatively be numbered in descending order of frequency.

In addition, the 80+80 MHz/160 MHz channel in the 802.11ax standard can be considered as a combination of two 80 MHz channels.

7. Channel allocation status in 160 MHz bandwidth.

As shown in Fig. 3, a 160 MHz channel can be divided into eight 20 MHz channels. The eight 20 MHz channels can be sequentially numbered in descending frequency order or can be sequentially numbered in ascending frequency order. In Fig. 3, channel 1 can be used as a primary 20 MHz channel, and channel 2 can be used as a secondary 20 MHz channel. Channel 1 and channel 2 can be aggregated as a primary 40 MHz channel, channel 3 and channel 4 can be aggregated as a secondary 40 MHz channel. Channels 1-4 can be aggregated as a primary 80 MHz channel, and channels 5-8 can be aggregated as a secondary 80 MHz channel.

It should be noted that the primary 20 MHz channel is not necessarily located at the beginning of 20 MHz. For example, channel 3 can be used as the primary 20 MHz channel, channel 4 can be used as the secondary 20 MHz channel, channel 1 and channel 2 can be aggregated as the primary 40 MHz channel, channel 1 and channel 2 can be aggregated as the secondary 40 MHz channel, channels 1-4 can be aggregated as the primary 80 MHz channel, and channels 5-8 can be aggregated as the secondary 80 MHz channel.

Alternatively, the secondary channel may have another name, such as an auxiliary channel. Embodiments of the present application are not limited to this.

8. First station and second station.

The first station supports the 802.11 standard after the 802.11ax standard. For example, the first station supports the 802.11be standard, or the first station supports the 802.11 standard of the next generation of the 802.11be standard. It can be understood that the first station can be backward compatible with the previous standard protocol, such as supporting the 802.11ax standard and the 802.11ax standard before the 802.11ax standard.

The second station does not support 802.11 after 802.11ax. For example, the second station does not support 802.11be. It is clear that the second station can support 802.11ax and 802.11ax before 802.11ax.

The terms used in the embodiments of the present application have been described above, and the details will not be described again below.

The 802.11ax standard introduces a trigger-based scheduled uplink transmission method, and the procedure of this method is shown in Fig. 4.

First, the AP sends a trigger frame. The trigger frame includes resource scheduling information and other parameters that are used by one or more stations to send uplink sub-PPDUs.

The station receives the trigger frame and parses the user information field from the trigger frame, which corresponds to the AID of the station. Then, the station sends a modulation part of the HE modulation part of the high efficient trigger based physical layer protocol data unit (HE TB PPDU) to the RU specified in the resource block allocation subfield of the user information field. The HE modulation part includes a high efficiency short training field (HE-STF), a high efficiency long training field (HE-LTF), and a data field. The coding and modulation parameter of the data field is indicated by the MCS field in the corresponding user information field. As shown in Fig. 4, the common preamble of the physical layer of the high efficient trigger based physical layer protocol data unit is sent on one or more 20 MHz channels in which the RU specified in the resource block allocation subfield of the user information field is located. The common physical layer preamble includes a legacy short training field, a legacy long training field, a legacy signal field, a repeated legacy signal field, and a high-efficiency signal field A.

The AP receives an uplink multi-user PPDU, and the uplink multi-user PPDU includes uplink sub-PPDUs sent by one or more stations. The AP then sends an acknowledgement frame in response. The acknowledgement frame sent to one or more stations may be sent as a downlink orthogonal frequency division multiple access (OFDMA) transmission or may be sent as a non-HT replication transmission.

Fig. 5 shows the format of the trigger frame in the 802.11ax standard. The trigger frame includes: a frame control field, a duration field, a received address (RA) field, a transmitting address (TA) field, a common info field, a user info list field, a padding field, and a frame check sequence (FCS) field.

The general information field includes general information that must be read by all stations. As shown in Fig. 6, the general information field includes: trigger type subfield, UL length subfield, more TF subfield, CS required subfield, UL bandwidth subfield, GI and HE-LTF type and MU-MIMO HE-LTF mode subfield, number of HE-LTF symbols and Midamble peridicity subfield, UL STBC subfield, LDPC extra symbol segment subfield, AP TX power subfield, Pre-FEC padding factor subfield, PE disambiguilty subfield, uplink spatial reuse subfield (UL spatial reuse), Doppler subfield, UL HE-SIG-A2 Reserved subfield, reserved subfield, and trigger dependent Common info field.

Below is a brief description of some of the fields in the general information field of the launch frame.

1. Trigger type subfield in the general information field

The trigger type subfield is four bits long and indicates the trigger frame type. In traditional technology, the correspondence between the trigger type subfield value and the trigger frame type is shown in Table 3.

Table 3

Trigger type field value Launch frame variant 0 Basic 1 Beamforming report poll (BFRP) 2 Multi-user block ack request (MU-BAR) 3 Multi-user Request To Send (MU-RTS) 4 Buffer status report poll (BSRP) 5 MU-BAR with group cast retransmission 6 Bandwidth Query Report Polling (BQRP) 7 NDP Feedback Report Poll (NFRP) 8-15 Spare

2. Uplink Bandwidth subfield in the General Information field.

The uplink bandwidth subfield occupies two bits and indicates the uplink bandwidth. In the conventional technology, when the value of the uplink bandwidth subfield is 0, it indicates that the uplink bandwidth is 20 MHz; when the value of the uplink bandwidth subfield is 1, it indicates that the uplink bandwidth is 40 MHz; when the value of the uplink bandwidth subfield is 2, it indicates that the uplink bandwidth is 80 MHz; and when the value of the uplink bandwidth subfield is 3, it indicates that the uplink bandwidth is 160 MHz.

3. Number of HE-LTF symbols and midamble periodicity subfield and Doppler frequency subfield in the general information field

The HE-LTF symbol count and midamble periodicity subfield occupy three bits, and the Doppler frequency subfield occupies one bit. The HE-LTF symbol count and midamble periodicity subfield are used in combination with the Doppler frequency subfield.

Specifically, when the value of the Doppler frequency subfield is 0, three bits in the number of HE-LTF symbols and the midamble periodicity subfield indicate the number of HE-LTF symbols. Specifically, when the value of the number of HE-LTF symbols and the midamble periodicity subfield is 0, it indicates that the number of HE-LTF symbols is 1; when the value of the number of HE-LTF symbols and the midamble periodicity subfield is 1, it indicates that the number of HE-LTF symbols is 2; when the value of the number of HE-LTF symbols and the midamble periodicity subfield is 2, it indicates that the number of HE-LTF symbols is 4; when the value of the number of HE-LTF symbols and the midamble periodicity subfield is 3, it indicates that the number of HE-LTF symbols is 6; when the value of the number of HE-LTF symbols and the midamble periodicity subfield is 4, it indicates that the number of HE-LTF symbols is 8; and the other value of the number of HE-LTF symbols and the midamble periodicity subfield is equal to the reserve value.

When the value of the Doppler frequency subfield is 1, the first two bits of the HE-LTF symbol quantity and the midamble periodicity subfield indicate the HE-LTF symbol quantity, and the third bit of the HE-LTF symbol quantity and the midamble periodicity subfield indicates the midamble periodicity. Specifically, when the value of the first two bits is 0, it indicates that the HE-LTF symbol quantity is 1; when the value of the first two bits is 1, it indicates that the HE-LTF symbol quantity is 2; when the value of the first two bits is 2, it indicates that the HE-LTF symbol quantity is 4; and the value of 3 of the first two bits is a reserved value. When the value of the third bit of the HE-LTF symbol quantity and the midamble periodicity subfield is 0, it indicates that the midamble periodicity is 10 symbols; and when the value of the third bit is 1, it indicates that the midamble periodicity is 20 symbols.

Some of the fields in the General Information field of the 802.11ax trigger frame have been described above, and the details are not described again below.

The user information list field of the trigger frame may include a plurality of user information fields. In the 802.11ax standard, the structure of the user information field may be shown in Fig. 7. The user information field may include: an AID subfield, a RU allocation field, a UL FEC coding type field, a UL HE-MCS field, a UL DCM field, a SS allocation/RA-RU information field, a UL target RSSI field, a reserved field, and a trigger dependent user info field.

Below is a brief description of some of the fields in the User Information field.

1. AID subfield in the user information field

In the 802.11ax standard, the value in the AID subfield and the meaning are given in Table 4.

Table 4

AID subfield Meaning 0 The user info field allocates one or more contiguous RA-RUs for associated STAS. 1-2007 The user information field is addressed to the station whose AID is equal to the value in the AID subfield. 2008-2044 Spare 2045 The user info field allocates one or more contiguous RA-RUs for associated STAS. 2046 Unallocated RU 2047-4094 Spare 4095 Start of padding field

In other words, in the 802.11ax standard, if the value in the AID subfield of the User Information field is 0 or 2045, the User Information field is used to allocate one or more contiguous random access RUs to the administered station. If the value in the AID subfield of the User Information field is any value from 1 to 2007, the User Information field is used to carry information to be read by the station whose AID matches the value in the AID subfield. If the value in the AID subfield of the User Information field is 2046, the User Information field specifies an unallocated RU. If the value in the AID subfield of the User Information field is 4095, the User Information field is used as a padding field. In addition, in the 802.11ax standard, the AID subfield values 2008 to 2044 and 2047 to 4094 are still reserved values and are not defined.

The AID hem may also be referred to as field AID12 and the details are not repeated below.

2. Subfield for allocation of resource blocks in the user information field.

In the 802.11ax standard, the RB Allocation subfield and the UL Bandwidth subfield in the General Information field can collectively indicate the size and location of the allocated RU. The sorting is from the least significant bit to the most significant bit, and the eight bits in the RB Allocation subfield can be numbered as bits B0 through B7. In particular, for the encoding of bits B1 through B7 (i.e., the second bit through the eighth bit) in the RB Allocation subfield, see Table 5. For example, the second row in Table 5 is used as an example. The values 0 through 8 of bits B1 through B7 correspond to the 26-tone RUs 1 through RU 9, respectively.

Table 5

Meaning The uplink bandwidth specified in the uplink bandwidth subfield Tone size RU Description 0-8 20 MHz/40 MHz/80 MHz/80+80 MHz or 160 MHz 26-tone RU 1 - RU 9, respectively from 9-17 40 MHz/80 MHz/80+80 MHz or 160 MHz RU 10 - RU 18, respectively 18-36 80 MHz/80+80 MHz or 160 MHz RU 19 - RU 37, respectively 37-40 20 MHz/40 MHz/80 MHz/80+80 MHz or 160 MHz 52-tone RU 1 - RU 4, respectively 41-44 40 MHz/80 MHz/80+80 MHz or 160 MHz RU 5 - RU 8, respectively 45-52 80 MHz/80+80 MHz or 160 MHz RU 9 - RU 16, respectively 53 and 54 20 MHz/40 MHz/80 MHz/80+80 MHz or 160 MHz 106-tone RU 1 and RU 2, respectively 55 and 56 40 MHz/80 MHz/80+80 MHz or 160 MHz RU 3 and RU 4, respectively 57-60 80 MHz/80+80 MHz or 160 MHz RU 5 - RU 8, respectively 61 20 MHz/40 MHz/80 MHz/80+80 MHz or 160 MHz 242-tone EN 1 62 40 MHz/80 MHz/80+80 MHz or 160 MHz EN 2 63 and 64 80 MHz/80+80 MHz or 160 MHz RU 3 and RU 4, respectively 65 40 MHz/80 MHz/80+80 MHz or 160 MHz 484-tone EN 1 66 80 MHz/80+80 MHz or 160 MHz EN 2 67 80 MHz/80+80 MHz or 160 MHz 996-tone EN 1 68 80+80 MHz or 160 MHz 2x996-tone RU 1, which includes two 996-tone RU Otherwise Spare

The specific locations of the various tone types and RUs with different numbers in the 80 MHz channel can be described above.

For example, if the uplink bandwidth specified in the Uplink Bandwidth subfield is 80 MHz and the values of bits B1-B7 are 0, this indicates that 26-tone RU 1 in the 80 MHz channel is allocated.

In addition, the B0 bit (i.e., the first bit) in the resource block allocation subfield indicates the 80 MHz channel in which the resource block allocated using bits B1-B7 is located. Specifically, when the value of the B0 bit is 0, it indicates that the resource block allocated using bits B1-B7 is in the primary 80 MHz channel. When the value of the B0 bit is 1, it indicates that the resource block allocated using bits B1-B7 is in the secondary 80 MHz channel. If the uplink bandwidth is less than or equal to 80 MHz, the B0 bit is set to 0 by default.

It should be noted that when transmitting OFDMA in the 802.11ax standard, the access point can only allocate one resource block to a station for transmission.

3. RU information subfield of spatial stream/random access allocation in user information field

If the value in the AID subfield in the user information field is 0 or 2045, the spatial stream/random access allocation RU information subfield is actually used as the random access RU information subfield and indicates the random access RU information. If the value in the AID subfield in the user information field is not 0 or 2045, the spatial stream/random access allocation RU information subfield is actually used as the spatial stream allocation subfield and is used to allocate a spatial stream.

In the 802.11ax standard, the spatial stream allocation subfield is six bits. The spatial stream allocation subfield includes a spatial stream start sequence number field and a spatial stream number field. The spatial stream start sequence number field is three bits and indicates the starting sequence number of the spatial stream. The spatial stream number field is three bits and indicates the number of spatial streams.

Some of the fields in the user information field in the 802.11ax standard have been described above, and the details are not described again below.

The maximum transmission bandwidth supported by the 802.11ax standard is 160 MHz, and the maximum transmission bandwidth supported by the 802.11be standard is 320 MHz. The trigger frame in the 802.11ax standard cannot initiate the first station to perform uplink transmission in a larger bandwidth (for example, 240 MHz or 320 MHz). Therefore, the present application provides a trigger frame to initiate the first station to perform uplink transmission in a larger bandwidth. In addition, in order to support hybrid transmission performed by the first station and the second station, the trigger frame provided in the present application can maintain compatibility with the trigger frame in the 802.11ax standard.

Below, with reference to a specific application scenario, a specific description of the frame format and the method of using the trigger frame, which are provided in this application, is given.

Fig. 8 shows a communication method according to an embodiment of the present application. The method includes the following steps.

S101: AP generates trigger frame.

If necessary, the trigger frame uses the trigger frame type in the existing 802.11ax standard. In other words, the value of the trigger type field in the trigger frame general information field is one of {0, 1, 2, 3, 4, 5, 6, 7}.

If necessary, the trigger frame mentioned in step S101 may alternatively be generated by the STA. The STA then sends the trigger frame to the AP to initiate the AP to send a response frame.

In this embodiment of the present application, in order to maintain compatibility with 802.11ax, the number of bits occupied by the general information field of the trigger frame provided in the present application is the same as the number of bits occupied by the general information field of the trigger frame in the 802.11ax standard.

If necessary, the launch frame provided in this application may use one or more of the following implementations:

Implementation 1: As shown in Fig. 9, the user information list field of the trigger frame includes a first user information field and one or more fourth user information fields. The fourth user information field is used for one station to send a response frame. The response frame may be a data frame, an administration frame, or a control frame. The value in the AID subfield in the fourth user information field may be an AID of an associated station, or may be an AID (for example, 0) used by a plurality of associated stations to perform arbitrary contention, or may be an AID (for example, 2045) used by a plurality of non-associated stations to perform arbitrary contention.

If necessary, the launch frame further includes one or more user information fields used for padding and/or a user information field used to indicate an unallocated resource block.

If the fourth user information field is located before the first user information field, part or all of the frequency domain resource specified in the resource block allocation subfield included in the fourth user information field is located in the first 160 MHz channel. If the fourth user information field is located after the first user information field, part or all of the frequency domain resource specified in the resource block allocation subfield included in the fourth user information field is located in the second 160 MHz channel.

If necessary, one of the following options may be used for the first 160 MHz channel and the second 160 MHz channel, and the first 160 MHz channel and the second 160 MHz channel apply to all embodiments of the present application:

Option 1: The first 160 MHz channel is the primary 160 MHz channel, and the second 160 MHz channel is the secondary 160 MHz channel.

Option 2: The first 160 MHz channel is the secondary 160 MHz channel, and the second 160 MHz channel is the primary 160 MHz channel.

Option 3: The first 160 MHz channel is the first 160 MHz channel in ascending frequency order within the 320 MHz bandwidth, and the second 160 MHz channel is the second 160 MHz channel in ascending frequency order within the 320 MHz bandwidth.

Option 4: The first 160 MHz channel is the first 160 MHz channel in descending frequency order within the 320 MHz bandwidth, and the second 160 MHz channel is the second 160 MHz channel in descending frequency order within the 320 MHz bandwidth.

The frequency domain resource may include one or more RUs. In this embodiment of the present application, if the frequency domain resource includes a plurality of RUs, the frequency domain resource may also be called a combination of resource blocks. If necessary, the combination of resource blocks may be a first combination of resource blocks, a second combination of resource blocks, a third combination of resource blocks, a fourth combination of resource blocks, a fifth combination of resource blocks, a sixth combination of resource blocks, a seventh combination of resource blocks, an eighth combination of resource blocks, or a ninth combination of resource blocks.

The first combination of resource blocks includes one 26-tone RU and one 52-tone RU in a 20 MHz bandwidth.

The second combination of resource blocks includes one 242-tone RU and one 484-tone RU in a bandwidth of 80 MHz.

The third combination of resource blocks includes one 484-tone RU and one 996-tone RU in a bandwidth of 160 MHz.

The fourth combination of resource blocks includes one 242-tone RU, one 484-tone RU and one 996-tone RU in a bandwidth of 160 MHz.

The fifth combination of resource blocks includes one 484-tone RU and two 996-tone RUs in a bandwidth of 240 MHz.

The sixth combination of resource blocks includes two 996-tone RUs in a bandwidth of 240 MHz.

The seventh combination of resource blocks includes one 484-tone RU and three 996-tone RUs in a bandwidth of 320 MHz.

The eighth combination of resource blocks includes three 996-tone RUs in a bandwidth of 320 MHz.

The ninth resource block combination includes one 106-tone RU and one 26-tone RU in a 20 MHz bandwidth.

In this embodiment of the present application, for simplicity of naming, the first combination of resource blocks and the ninth combination of resource blocks may be collectively referred to as combinations of small resource blocks, and the combination of the second resource block - the eighth resource block may be collectively referred to as combinations of large resource blocks.

It can be understood that a part or the whole of the frequency domain resource specified in the resource block allocation subfield is located in the first 160 MHz channel means the following: (1) If the frequency domain resource specified in the resource block allocation subfield is less than or equal to the 160 MHz bandwidth, the whole of the frequency domain resource specified in the resource block allocation subfield is located in the first 160 MHz channel; and (2) if the range of the frequency domain resources specified in the resource block allocation subfield is greater than the 160 MHz bandwidth, the part of the frequency domain resource specified in the resource block allocation subfield is located in the first 160 MHz channel. For example, the frequency domain resource includes the first 996-tone RU in the primary bandwidth of 160 MHz and 2x996-tone RUs in the secondary bandwidth of 160 MHz.

It can be understood that a part or the whole of the frequency domain resource specified in the resource block allocation subfield is located in the second 160 MHz channel means the following: (1) If the frequency domain resource specified in the resource block allocation subfield is less than or equal to the 160 MHz bandwidth, the whole of the frequency domain resource specified in the resource block allocation subfield is located in the second 160 MHz channel; and (2) if the range of the frequency domain resources specified in the resource block allocation subfield exceeds the 160 MHz bandwidth, a part of the frequency domain resource specified in the resource block allocation subfield is located in the second 160 MHz channel. For example, the frequency domain resource includes the first 996-tone RU in the secondary bandwidth of 160 MHz and 2x996-tone RUs in the primary bandwidth of 160 MHz.

If necessary, if the frequency domain resource range specified in the resource block allocation subfield in the user information field is larger than the 160 MHz bandwidth, it may be specified that the user information field can only be located before the first user information field; or it may be specified that the user information field can only be located after the first user information field; or it is not limited to the user information field being located before the first user information field or after the first user information field.

When the fourth user information field is a user information field corresponding to the first station, the first station may parse the fourth user information field in accordance with the 802.11be standard.

If necessary, the resource block allocation subfield in the fourth user information field occupies eight bits. Bit B0 in the resource block allocation subfield indicates the 80 MHz channel in which the resource block allocated using bits B1-B7 is located. Specifically, when the value of bit B0 is 0, this indicates that part or all of the frequency domain resource allocated using bits B1-B7 is in the first 80 MHz channel. When the value of bit B0 is 1, this indicates that part or all of the frequency domain resource allocated using bits B1-B7 is in the second 80 MHz channel.

In another implementation, the resource block allocation subfield in the fourth user information field additionally includes another bit, for example the reserved bit shown in Fig. 7, which is designated as the BS bit. This bit indicates the 160 MHz channel in which the resource block allocated by bits B1-B7 is located. In particular, when the value of the BS bit is 0, this indicates that a part or all of the frequency domain resource allocated using bits B1-B7 is in the first 160 MHz channel. When the value of the BS bit is 1, this indicates that a part or all of the frequency domain resource allocated using bits B1-B7 is in the second 160 MHz channel. In this case, the first user information field does not exist, and bits B1-B7 and the BS bit, which are occupied by the resource block allocation subfield, can indicate any resource block or combination of resource blocks in the maximum bandwidth of 320 MHz.

It should be noted that the resource block allocation subfield presented in this application may be applied to a trigger frame for scheduling a single-user transmission and may be further applied to a trigger frame for full-band transmission or full-band transmission with MU-MIMO puncturing.

If necessary, the trigger frame provided in this application may not include the first user information field, but may include the fourth user information field. In addition, the trigger frame may further include the third user information field mentioned below.

If necessary, one of the following options may be used for the first 80 MHz channel and the second 80 MHz channel, and the first 80 MHz channel and the second 80 MHz channel apply to all embodiments of the present application:

Option 1: The first 80 MHz channel is the primary 80 MHz channel, and the second 80 MHz channel is the secondary 80 MHz channel.

Option 2: The first 80 MHz channel is the secondary 80 MHz channel, and the second 80 MHz channel is the primary 80 MHz channel.

Option 3: The first 80 MHz channel is the first 80 MHz channel in ascending frequency order within the 160 MHz bandwidth, and the second 80 MHz channel is the second 80 MHz channel in ascending frequency order within the 160 MHz bandwidth.

Option 4: The first 80 MHz channel is the first 80 MHz channel in descending frequency order within the 160 MHz bandwidth, and the second 80 MHz channel is the second 80 MHz channel in descending frequency order within the 160 MHz bandwidth.

If necessary, for the encoding of bits B1-B7 of the resource block allocation subfield, see Table 6. In Table 6, the first row indicates the values of bits B1-B7, the second row indicates the uplink bandwidth, the third row indicates the bandwidth value of the frequency domain resource indicated by bits B1-B7, and the fourth row indicates the frequency domain resource numbers indicated by bits B1-B7. It can be understood that Table 6 is just an example, and the encoding of bits B1-B7 in the resource block allocation subfield may alternatively be implemented in a different way.

Table 6

Meaning Uplink bandwidth Tone size RU Description 0-8 20 MHz/40 MHz/80 MHz/80+80 MHz or 160 MHz/240 MHz or 160+80 MHz/320 MHz or 160+160 MHz 26-tone RU 1 - RU 9, respectively 9-17 40 MHz/80 MHz/80+80 MHz or 160 MHz/240 MHz or 160+80 MHz/320 MHz or 160+160 MHz RU 10 - RU 18, respectively 18-35 80 MHz/80+80 MHz or 160 MHz/240 MHz or 160+80 MHz/320 MHz or 160+160 MHz RU 19 - RU 36, respectively 36-39 20 MHz/40 MHz/80 MHz/80+80 MHz or 160 MHz/240 MHz or 160+80 MHz/320 MHz or 160+160 MHz 52-tone RU 1 - RU 4, respectively 40-43 40 MHz/80 MHz/80+80 MHz or 160 MHz/240 MHz or 160+80 MHz/320 MHz or 160+160 MHz RU 5 - RU 8, respectively 44-51 80 MHz/80+80 MHz or 160 MHz/240 MHz or 160+80 MHz/320 MHz or 160+160 MHz RU 9 - RU 16, respectively 52 and 53 20 MHz/40 MHz/80 MHz/80+80 MHz or 160 MHz/240 MHz or 160+80 MHz/320 MHz or 160+160 MHz 106-tone RU 1 and RU 2, respectively 54 and 55 40 MHz/80 MHz/80+80 MHz or 160 MHz/240 MHz or 160+80 MHz/320 MHz or 160+160 MHz RU 3 and RU 4, respectively 56-59 80 MHz/80+80 MHz or 160 MHz/240 MHz or 160+80 MHz/320 MHz or 160+160 MHz RU 5 - RU 8, respectively 60 20 MHz/40 MHz/80 MHz/80+80 MHz or 160 MHz/240 MHz or 160+80 MHz/320 MHz or 160+160 MHz 242-tone EN 1 61 40 MHz/80 MHz/80+80 MHz or 160 MHz/240 MHz or 160+80 MHz/320 MHz or 160+160 MHz EN 2 62 and 63 80 MHz/80+80 MHz or 160 MHz/240 MHz or 160+80 MHz/320 MHz or 160+160 MHz RU 3 and RU 4, respectively 64 40 MHz/80 MHz/80+80 MHz or 160 MHz/240 MHz or 160+80 MHz/320 MHz or 160+160 MHz 484-tone EN 1 65 80 MHz/80+80 MHz or 160 MHz/240 MHz or 160+80 MHz/320 MHz or 160+160 MHz EN 2 66 80 MHz/80+80 MHz or 160 MHz/240 MHz or 160+80 MHz/320 MHz or 160+160 MHz 996-tone EN 1 67 80+80 MHz or 160 MHz 2x996-tone RU 1 or a combination of large resource blocks in a 240 MHz bandwidth 68-83 Combination of small resource blocks 16 combinations 84-119 Combination of large resource blocks 36 combinations (excluding one combination of large resource blocks in the 240 MHz bandwidth) 120 320 MHz or 160+160 MHz 4x996-tone EN 1 Otherwise Spare

As shown in Fig. 2, an 80 MHz channel in the 802.11be standard can support a 26-tone RU, a 52-tone RU, a 106-tone RU, a 242-tone RU, a 484-tone RU, and a 996-tone RU. For example, when Fig. 2 is arranged vertically, the leftmost part of Fig. 2 can be regarded as the lowest frequency, and the rightmost part of Fig. 2 can be regarded as the highest frequency. The 26-tone RUs in the 80 MHz channel can be respectively numbered from left to right to obtain RU 1 through RU 36. The 52-tone RUs in the 80 MHz channel can also be respectively numbered from left to right to obtain RU 1 through RU 16. The 106-tone RUs in the 80 MHz channel can also be respectively numbered from left to right to obtain RU 1 through RU 8. The 242-tone RUs in the 80 MHz channel can also be respectively numbered from left to right to obtain RU 1 through RU 4. The 484-tone RUs in the 80 MHz channel can also be respectively numbered from left to right to obtain RU 1 and RU 2. The 996-tone RU in the 80 MHz channel can also be numbered from left to right to obtain RU 1. The above numbers can alternatively be numbered in descending order of frequency.

In this embodiment of the present application, the 80 MHz channel may be divided into a first 20 MHz channel, a second 20 MHz channel, a third 20 MHz channel and a fourth 20 MHz channel in ascending frequency order (or descending frequency order). The small resource block combination allocated to one station in the 20 MHz frequency segment includes one 26-tone RU and one 52-tone RU. The small resource block combination further includes one 106-tone RU and one 26-tone RU. For example, Fig. 10, Fig. 14, Fig. 18 and Fig. 22 show small resource block combinations that may exist in the first 20 MHz channel; Fig. 11, Fig. 15, Fig. 19 and Fig. 23 show small resource block combinations that may exist in the second 20 MHz channel; Fig. 12, Fig. 16, Fig. 20 and 24 show combinations of small resource blocks that may exist in the third 20 MHz channel; and 13, 17, 21 and 25 show combinations of small resource blocks that may exist in the fourth 20 MHz channel.

As shown in Fig. 26 - Fig. 29, the combination of large resource blocks allocated to one station in the 80 MHz frequency segment includes one 242-tone RU and one 484-tone RU.

As shown in Fig. 30 to Fig. 33, the large resource block combination allocated to one station in the 160 MHz frequency segment includes one 484-tone RU and one 996-tone RU. Alternatively, as shown in Fig. 34 to Fig. 41, the large resource block combination allocated to one station in the 160 MHz frequency segment includes one 242-tone RU, one 484-tone RU, and one 996-tone RU. As shown in Fig. 42 to Fig. 47, the large resource block combination allocated to one station in the 240 MHz frequency segment includes one 484-tone RU and two 996-tone RUs. Alternatively, as shown in Fig. 48 to Fig. 50, a combination of large resource blocks allocated to one station in the 240 MHz frequency segment includes two 996-tone RUs. If necessary, two 996-tone RUs can be replaced by one 2x996-tone RU. If necessary, the 240 MHz frequency segment can be in the 320 MHz bandwidth.

As shown in Fig. 51 to Fig. 58, the combination of large resource blocks allocated to one station in the 320 MHz frequency segment includes one 484-tone RU and three 996-tone RUs. Alternatively, as shown in Fig. 59 to Fig. 62, the combination of large resource blocks allocated to one station in the 320 MHz frequency segment includes three 996-tone RUs. If necessary, the three 996-tone RUs can be replaced by one 3x996-tone RU. Alternatively, the three 996-tone RUs can be replaced by one 2x996-tone RU and one 996-tone RU.

Alternatively, the above embodiment may be as follows:

As shown in Fig. 30 to Fig. 33, the large resource block combination allocated to one station in the 160 MHz frequency segment includes one 484-tone RU and one 996-tone RU. A specific 160 MHz frequency segment can be indicated using the BS bit in the resource block allocation subfield. In this case, there are a total of four combinations of 996+484 resource blocks, and the 80 MHz bandwidth in which the 484 resource block of the 996+484 resource block combination is located can be further indicated using the B0 bit in the resource block allocation subfield. In this case, B1 to B7 in the resource block allocation subfield need to indicate only two combinations of 996+484 resource blocks, shown, for example, in Fig. 30 and Fig. 32 or Fig. 31 and Fig. 33.

As shown in Fig. 34 to Fig. 41, the large resource block combination allocated to one station in the 160 MHz frequency segment includes one 242-tone RU, one 484-tone RU and one 996-tone RU. A specific 160 MHz frequency segment can be indicated using the BS bit in the resource block allocation subfield. In this case, there are a total of eight combinations of 996+484+242 resource blocks, and the 80 MHz bandwidth in which the 484-tone resource block of the 996+484+242 resource block combination is located can be further indicated using the B0 bit in the resource block allocation subfield. In this case, B1 to B7 in the resource block allocation subfield need to indicate only four combinations of 996+484+242 resource blocks, as shown, for example, in Fig. 34, Fig. 35, Fig. 36 and Fig. 37 or Fig. 38, Fig. 39, Fig. 40 or Fig. 41.

As shown in Fig. 51 to Fig. 58, the large resource block combination allocated to one station in the 320 MHz frequency segment includes one 484-tone RU and three 996-tone RUs. In this case, there are a total of eight combinations of 3x996+484 resource blocks, and the 80 MHz bandwidth of the 320 MHz frequency segment in which the 484-tone resource block is located can be indicated using the BS and the B0 bit in the resource block allocation subfield. In this case, B1 to B7 in the resource block allocation subfield need to indicate only two combinations of 3x996+484 resource blocks, shown, for example, in Fig. 51 and Fig. 52, Fig. 53 and Fig. 54, Fig. 55 and Fig. 56, or Fig. 57 and Fig. 58.

As shown in Fig. 59 to Fig. 62, the large resource block combination allocated to one station in the 320 MHz frequency segment includes three 996-tone RUs. In this case, there are a total of four combinations of 3x996 resource blocks, and the 80 MHz bandwidth of the 320 MHz frequency segment in which the 996th resource block is located can be indicated using the BS and the B0 bit in the resource block allocation subfield. The 996th resource block obtained by dividing the resource block based on the spectrum cannot form a 2x996th resource block with another 996th resource block. In this case, B1 to B7 in the resource block allocation subfield should indicate only one combination of 3x996 resource blocks, shown in, for example, Fig. 59, Fig. 60, Fig. 61 or Fig. 62.

As shown in Fig. 70 to Fig. 81, the large resource block combination allocated to one station in the 320 MHz frequency segment includes two 996-tone RUs and one 484-tone RB. In this case, there are a total of 12 combinations of 2x996+484 RBs, and the 80 MHz bandwidth of the 320 MHz frequency segment in which the 484th RB in the RB combination is located can be indicated using the BS and the B0 bit in the RB allocation subfield. In this case, B1 to B7 in the RB allocation subfield need to indicate only four combinations of 2x996+484 RBs, shown, for example, in Fig. 70, Fig. 71, Fig. 76 and Fig. 77 or Fig. 72, Fig. 73, Fig. 78 and Fig. 79 or Fig. 74, Fig. 75, Fig. 78 and Fig. 79.

As shown in Fig. 10 to Fig. 17 and Fig. 82 to Fig. 85, the combination of large resource blocks provided for one station in the 80 MHz frequency segment includes one 52-tone RU and one 52-tone resource block. In this case, there are a total of 12 combinations of 52+26 resource blocks. In this case, the 80 MHz frequency segment should be indicated using the BS and the B0 bit in the resource block allocation subfield. Thus, B1 to B7 in the resource block allocation subfield should indicate 12 combinations of 52+26 resource blocks.

As shown in Fig. 18 to Fig. 25, the combination of large resource blocks provided for one station in the 80 MHz frequency segment includes one 106-tone RU and one 26-tone resource block. In this case, there are a total of eight combinations of 106+26 resource blocks. In this case, the 80 MHz frequency segment should be indicated using the BS and the B0 bit in the resource block allocation subfield. Thus, B1 to B7 in the resource block allocation subfield should indicate eight combinations of 106+26 resource blocks.

In addition, in the above-described method, fields B1-B7 in the resource block allocation subfield may be summed into a 7-bit table (recorded in the table as B7-B1): For the information specified by B1-B7, see the following descriptions.

The following is a further description of the advantages of using the primary-secondary location indication method: two bits in the primary-secondary indication method are represented here as BS and B0 (or may be represented by other letters, such as B0 B1 in the above embodiment, which are merely examples in this document), where B may mean a bit, and S may mean a 160 MHz segment. In this document, BS represents a primary bandwidth of 160 MHz or a secondary bandwidth of 160 MHz, B0 at P160 MHz represents a primary bandwidth of 80 MHz and a secondary bandwidth of 80 MHz, and B0 at S160 MHz represents a bandwidth of 80 MHz with a lower frequency and a bandwidth of 80 MHz with a higher frequency.

This embodiment of the present application provides the correspondence variant given in Table 7(1). In Table 7(1), two bits indicate the correspondence between four primary-secondary cases (a, b, c and d) of the location of the primary 80 MHz bandwidth in the 320 MHz frequency segments and 80 MHz in the absolute frequency indicated by two bits. The absolute frequency in this document is the absolute location of the 80 MHz bandwidth in the entire 320 MHz bandwidth. Case a corresponds to the distribution by location of the absolute frequency, that is, the primary 80 MHz bandwidths are the lowest 80 MHz bandwidths of the absolute frequency. In case b, the primary 80 MHz bandwidths are the secondary lowest 80 MHz of the absolute frequency. In case c, the primary 80 MHz bandwidths are the secondary highest 80 MHz of the absolute frequency. In case d, the primary bandwidths of 80 MHz are the maximum 80 MHz of absolute frequency. In Table 7(1), each row indicates the value designated by 80 MHz at absolute frequency corresponding to four cases of primary-secondary allocation. For example, in the first row, 00 at absolute frequency corresponds to a0, b1, c2 and d2 (that is, the value 00 of case a corresponds to absolute location 00, the value 01 of case b corresponds to absolute location 00, the value 10 in case c corresponds to absolute location 00, and the value 10 in case d corresponds to absolute location 00). It should be noted that the values of two bits and the values specified in this document by two bits are just examples. In a specific implementation, there may be a different correspondence, but there is a relationship between the primary and secondary allocation and the value designated by 80 MHz at absolute frequency.

In this way, when the receiving side device knows about the case in which the receiving side device is, for example, Case c, when the received two bits indicate c3(11), c3 only needs to correspond to 01 in the absolute location, and then the finally allocated RU/MRU can be obtained by querying table 4 with reference to the 7-bit resource block pointer in the previous embodiment. This is equivalent to the receiving side device having a switching operation from a relative location to an absolute location. The receiving side device in this document may be an STA without an AP.

Table 7(1) shows the correspondence between the primary-secondary indicator and the two bits indicated by the absolute frequency.

Table 7(1)

Absolute frequency
(absolute frequency) Case a at 320 MHz
(Case a in 320 MHz) Case b at 320 MHz
(Case B in 320 MHz) Case c at 320 MHz
(Case c in 320 MHz) Case d at 320 MHz
(Case d in 320 MHz) Lowest 80 MHz (00) a0 (00, Primary 80) b1 (01, Secondary 80 MHz) c2 (10, 3rd 80 MHz) d2 (10, 3rd 80 MHz) Secondary lowest 80 MHz (01) a1 (01, Secondary 80 MHz) b0 (00, Primary 80 MHz) c3 (11, 4th 80 MHz) d3 (11, 4th 80 MHz) Secondary highest 80 MHz (10) a2 (10, 3- and 80 MHz) b2 (10, 3- and 80 MHz) c0 (00, Primary 80 MHz) d1 (01, Secondary 80 MHz) Highest 80 MHz (11) a3 (11, 4th 80 MHz) b3 (11, 4th 80 MHz) c1 (01, Secondary 80 MHz) d0 (00, Primary 80 MHz)

Note: In this document, BS and B0 may indicate the 80 MHz bandwidth in which the smallest RU in the MRU or RU is located, and the primary/secondary location indication method is used. For example, 3x996 is formed from 2x996 + 996, and it may indicate the 80 MHz location in which 996 is located. As another example, 3x996+484 may indicate the 80 MHz bandwidth location in which the 484th resource block is located.

This embodiment of the present application further provides specific indicators B1-B7. For details, see Table 7(2) below.

If necessary, the above table 7(2) can be presented in four tables. Based on the correspondence in the above table 7(1), table 7(2) can be alternatively divided into the following four tables: table 7(2a), table 7(2b), table 7(2c), and table 7(2d), that is, a table including only case a, case b, case c, or case d. In other cases, the designators BS and B0 do not need to be included in one table.

When the table includes case a, Table 7(2a) below should be used:

When the table includes case b, table 7(2b) looks like this:

In case c, table 7(2c) is used:

In case d, table 7(2d) is used:

This embodiment of the present application further provides a method of indicating a 2-bit location + indicating a 7-bit table.

This is another technical solution for implementing the pointer in the RU allocation subfield table. To be precise, only the 7-bit table pointer method is used to point to a specific RU/MRU at the 80 MHz location defined by the BS and B0 bits. 3x996+484 is used as an example. When 7 bits (B7-B1) point to 105, there are a total of the following four MRU cases:

-MRU 1: RU 2 (484T) + RU 2 (996T) + RU 2 (2x996T)

-MRU 3: RU 4 (484T) + RU 1 (996T) + RU 2 (2x996T)

-MRU 5: RU 6 (484T) + RU 4 (996T) + RU 1 (2x996T)

-MRU 7: RU 8 (484T) + RU 3 (996T) + RU 1 (2x996T)

According to the pointer of two bits BS and B0, the selection of MRU 1, MRU 3, MRU 5 or MRU 7 can be determined. That is, the idea of the method is that after obtaining the RU/MRU set corresponding to the value of seven bits, a specific MRU in the set can be determined based on the two bits BS and B0.

It should be noted that MRUx or RUx, corresponding to the resource block size, may represent a specific RU/MRU location.

The two bits BS and B0 use the primary-secondary location indication method, where a two-bit pointer can indicate the location in 80 MHz where the smallest RU of the RU/MRU is located. Details are provided in Table 7(3).

For the assignment of MRU in the above table, see the appendix to the MRU index shown in Table 7(4a) and Table 7(4b).

The MRU index is the MRU index. It should be noted that the MRU index is not the value obtained using 7 bits or 9 bits in the resource block allocation subfield, but can be regarded as an MRU template. Table 7(4a) and Table 7(4b) show the MRU indices at 160 MHz and 320 MHz.

Table 7(4a)

MRU type MRU index MRU combination
Note: empty means that the value is missing. 996 RU + 484 RU MRU 1 996 RU + 484 RU; [blank-RU 484 RU 484 RU 996] MRU 2 996 RU + 484 RU; [RU 484 empty - RU 484 RU 996] MRU 3 996 RU + 484 RU; [RU 996 empty - RU 484 RU 484] MRU 4 996 RU + 484 RU; [RU 996 RU 484 empty-RU 484] 996 RU + 484 RU +
RU 242 (non-OFDMA only) MRU 1 996 RU + 484 RU + 242 RU; [empty-RU 242 RU 242 RU 484 RU 996] MRU 2 996 RU + 484 RU + 242 RU; [RU 242 empty - RU 242 RU 484 RU 996] MRU 3 996 RU + 484 RU + 242 RU; [RU 484 empty - RU 242 RU 242 RU 996] MRU 4 996 RU + 484 RU + 242 RU; [RU 484 RU 242 empty - RU 242 RU 996] MRU 5 996 RU + 484 RU + 242 RU; [RU 996 empty - RU 242 RU 242 RU 484] MRU 6 996 RU + 484 RU + 242 RU; [RU 996 RU 242 empty - RU 242 RU 484] MRU 7 996 RU + 484 RU + 242 RU; [RU 996 RU 484 empty-RU 242 RU 242] MRU 8 996 RU + 484 RU + 242 RU; [RU 996 RU 484 RU 242 empty-RU 242]

Table 7(4b)

MRU type MRU index MRU combination
Note: empty means there is no value. 2 x 996 RU
+ 484 RU MRU 1 2 x 996 RU + 484 RU; [blank-RU 484 RU 484 RU 996 RU 996 blank-RU 996] MRU 2 2 x 996 RU + 484 RU; [RU 484 empty-RU 484 RU 996 RU 996 empty-RU 996] MRU 3 2 x 996 RU + 484 RU; [RU 996 empty-RU 484 RU 484 RU 996 empty-RU 996] MRU 4 2 x 996 RU + 484 RU; [RU 996 RU 484 empty-RU 484 RU 996 empty-RU 996] MRU 5 2 x 996 RU + 484 RU; [RU 996 RU 996 empty-RU 484 RU 484 empty-RU 996] MRU 6 2 x 996 RU + 484 RU; [RU 996 RU 996 RU 484 empty-RU 484 empty-RU 996] MRU 7 2 x 996 RU + 484 RU; [empty-RU 996 empty-RU 484 RU 484 RU 996 RU 996] MRU 8 2 x 996 RU + 484 RU; [empty-RU 996 RU 484 empty-RU 484 RU 996 RU 996] MRU 9 2 x 996 RU + 484 RU; [empty-RU 996 RU 996 empty-RU 484 RU 484 RU 996] MRU 10 2 x 996 RU + 484 RU; [blank-RU 996 RU 996 RU 484 blank-RU 484 RU 996] MRU 11 2 x 996 RU + 484 RU; [blank-RU 996 RU 996 RU 996 blank-RU 484 RU 484] MRU 12 2 x 996 RU + 484 RU; [blank-RU 996 RU 996 RU 996 RU 484 blank-RU 484] 3 x 996 RU MRU 1 3 x 996 RU; [blank-RU 996 RU 996 RU 996 RU 996] MRU 2 3 x 996 RU; [RU 996 empty-RU 996 RU 996 RU 996] MRU 3 3 x 996 RU; [RU 996 RU 996 empty-RU 996 RU 996] MRU 4 3 x 996 RU; [RU 996 RU 996 RU 996 empty-RU 996] 3 x 996 RU
+ 484 RU MRU 1 3 x 996 RU + 484 RU; [blank-RU 484 RU 484 RU 996 RU 996 RU 996] MRU 2 3 x 996 RU + 484 RU; [RU 484 empty - RU 484 RU 996 RU 996 RU 996] MRU 3 3 x 996 RU + 484 RU; [RU 996 empty-RU 484 RU 484 RU 996 RU 996] MRU 4 3 x 996 RU + 484 RU; [RU 996 RU 484 empty-RU 484 RU 996 RU 996] MRU 5 3 x 996 RU + 484 RU; [RU 996 RU 996 empty-RU 484 RU 484 RU 996] MRU 6 3 x 996 RU + 484 RU; [RU 996 RU 996 RU 484 empty-RU 484 RU 996] MRU 7 3 x 996 RU + 484 RU; [RU 996 RU 996 RU 996 empty-RU 484 RU 484] MRU 8 3 x 996 RU + 484 RU; [RU 996 RU 996 RU 996 RU 484 empty-RU 484]

It should be understood that the mapping of the relationships between indices and RU/MRU in the tables provided in the embodiments of the present application, such as table 7(1), table 7(2), table 7(2a), table 7(2b), table 7(2c), table 7(2d), table 7(3), table 7(4a) and table 7(4b), are merely examples. In a specific implementation, other table forms can be obtained based on the technical solutions provided in the embodiments of the present application, which fall within the scope of protection of the embodiments of the present application.

The value in the AID subfield included in the first user information field is the first specified value. The first specified value can be 2046, 4095, or reserved. The reserved value can be any of the values from 2008 to 2044 or from 2047 to 4094.

In a possible variant, the first specified value is equal to a reserve value, for example 2044. In this case, the other remaining bits in the first user information field, other than the AID subfield, are not used.

In another possible option, the first given value is 4095, and below are two ways:

Method 1: The first user information field may include the first pointer subfield, and the value of the first pointer subfield is the first value. In this case, the other remaining bits in the first user information field other than the AID subfield and the first pointer subfield are not used.

It can be understood that the conventional technology defines that the user information field whose value in the AID subfield is 4095 is a field used to fill the start frame. However, the present application further defines that the user information field whose value in the AID subfield is 4095 can further be used as the first user information field. In order that the first station does not confuse the function of the user information field whose value in the AID subfield is 4095, the following solution is proposed in the present application: the user information field whose value in the AID subfield is 4095 includes a first pointer subfield, and the first pointer subfield indicates the function of the user information field whose value in the AID subfield is 4095. In particular, if the value of the first pointer subfield is the first value, for example, 0, the user information field whose value in the AID subfield is 4095 is the user information field used to fill the trigger frame; and if the value of the first pointer subfield is the second value, for example, 1, the user information field whose value in the AID subfield is 4095 is the first user information field.

Method 2: The user information field whose value in the AID field is 4095 is the first user information field, but is still the user information field used for filling for the second station. In addition, the user information field used for filling for the first station is added. For the first station, the value in the AID field of the user information field used for filling can take any of the reserved values, such as 4094.

When the first specified value is 4095, and when the first user information field uses option 1, the second station can regard the first user information field as the user information field used to fill the start frame. Specifically, after the second station regards the first user information field, the second station does not parse the user information field after the first user information field, so that the second station can reduce power consumption.

In another possible embodiment, the first specified value is 2046, the first user information field may include the second pointer subfield, and the value of the second pointer subfield is the third value. The second pointer subfield may reuse the resource block allocation subfield, and the third value is equal to the reserve value of the resource block allocation subfield in the conventional technology, in other words, the third value may be an integer from 121 to 127. For example, the third value may be 127. In this case, the other remaining bits in the first user information field other than the AID subfield and the second pointer subfield are not used.

It can be understood that the conventional technology defines that the user information field whose value in the AID subfield is 2046 is a user information field used to indicate an unallocated resource block. However, the present application further defines that the user information field whose value in the AID subfield is 2046 can be used as the first user information field. In order that the first station does not confuse the function of the user information field whose value in the AID subfield is 4095, the following solution is proposed in the present application: the user information field whose value in the AID subfield is 2046 includes a second pointer subfield, and the second pointer subfield indicates the function of the user information field whose value in the AID subfield is 2046. In particular, if the value of the second pointer subfield is the third value, the second pointer subfield indicates that the user information field whose value in the AID subfield is 2046 is the first user information field; and if the value of the second pointer subfield is not the third value, the second pointer subfield indicates that the user information field whose value in the AID subfield is 2046 is a user information field used to indicate an unallocated resource block.

If the second pointer subfield reuses the resource block allocation subfield when the value of the resource block allocation subfield is not the third value, the resource block allocation subfield specifies a frequency domain resource in the corresponding bandwidth.

The resource allocation subfield in the fourth user information field may be a resource allocation indication subfield in the user information field used to indicate an unallocated resource block.

In this embodiment of the present application, the number of bits occupied by the first user information field is the same as the number of bits occupied by the user information field corresponding to the second station in the 802.11ax standard.

In this embodiment of the present application, if the trigger frame further includes a user information field corresponding to the second station, the second station may parse, in accordance with a rule defined in the 802.11ax standard, the user information field corresponding to the second station.

The maximum transmission bandwidth supported by the 802.11ax standard is 160 MHz, and the maximum transmission bandwidth supported by the 802.11be standard is 320 MHz. When the uplink bandwidth is 320 MHz, the resource block allocation subfield in the user information field of the trigger frame in the 802.11ax standard cannot accurately indicate the 160 MHz frequency region in which the resource block is located in the 320 MHz bandwidth. In order to solve this problem, the conventional technology proposed to add one bit in the resource block allocation subfield in the user information field of the trigger frame, where the added bit indicates the 160 MHz frequency region in which the resource block is located. However, adding a bit in the resource block allocation subfield in the user information field means adding a bit in the user information field. Thus, the structure of the trigger frame is changed. The modified trigger frame is incompatible with the trigger frame of the 802.11ax standard. The second station cannot correctly parse the modified trigger frame. Therefore, the modified trigger frame cannot trigger the second station to perform uplink transmission. Therefore, how to ensure that the resource block can be allocated to the first station in the 320 MHz channel by the trigger frame and ensure that the trigger frame can normally trigger the second station to perform uplink transmission is an urgent problem that needs to be solved in the communication industry.

This technical problem can be solved by using the above-described implementation 1 for the trigger frame. Specifically, on one hand, the first user information field exists in the user information list field in the trigger frame, and the first user information field can be used to determine the frequency region of 160 MHz in which the frequency region resource specified in the resource block allocation subfield in another user information field is specifically located, so that the resource block is allocated to the first station in the frequency region of 320 MHz using the trigger frame. In addition, there is no need to add one bit in the resource block allocation subfield in the fourth user information field. This ensures that the trigger frame provided in the present application can maintain compatibility with the trigger frame in the 802.11ax standard.

If necessary, as shown in Fig. 63, the user information list field of the start frame may further include a second user information field. In the user information list field, the second user information field is located before the first user information field. If the fourth user information field is located before the first user information field and after the second user information field, a part or all of the frequency domain resource indicated in the resource block allocation subfield included in the fourth user information field is located in the first 160 MHz channel. If the fourth user information field is located after the first user information field, a part or all of the frequency domain resource indicated in the resource block allocation subfield included in the fourth user information field is located in the second 160 MHz channel.

If required, the value in the AID subfield included in the second user information field is the second specified value. The second specified value is not equal to the first specified value. The second specified value can be a fallback value. The fallback value can be any of the values from 2008 to 2044 or from 2047 to 4094.

In this embodiment of the present application, the number of bits occupied by the second user information field is the same as the number of bits occupied by the user information field corresponding to the second station in the 802.11ax standard. The other remaining bits in the second user information field, other than the AID subfield, are not used.

Implementation 2: As shown in Fig. 64, the user information list field of the start frame includes a third user information field. The third user information field carries common information of the first station. In other words, the third user information field includes common information to be read by the first station. The common information is used to support the first station to implement data transmission in a wider bandwidth (more than 160 MHz).

If required, the third user information field includes one or more of the following:

(1) First subfield. The first subfield indicates the uplink bandwidth in combination with the uplink bandwidth subfield in the general information field of the trigger frame. The uplink bandwidth is the transmission bandwidth of the uplink PPDU.

In an additional embodiment, the first subfield occupies one bit in the third user information field. In this case, the fact that the first subfield indicates the uplink bandwidth in combination with the uplink bandwidth subfield in the general information field of the trigger frame can be specifically implemented as follows:

when the uplink bandwidth subfield value is 0 and the first subfield is equal to the reserve value, the uplink bandwidth is 20 MHz;

when the uplink bandwidth subfield value is 1 and the first subfield is equal to the reserve value, the uplink bandwidth is 40 MHz;

when the uplink bandwidth subfield value is 2 and the first subfield is equal to the reserve value, the uplink bandwidth is 80 MHz;

when the uplink bandwidth subfield value is 3 and the value of the first subfield is the fourth value, the uplink bandwidth is 160 MHz; and

when the uplink bandwidth subfield value is 3 and the value of the first subfield is the fifth value, the uplink bandwidth is 320 MHz.

The fourth value is 0 and the fifth value is 1. Alternatively, the fourth value is 1 and the fifth value is 0.

In another additional embodiment, the first subfield occupies two bits in the third user information field. In this case, the fact that the first subfield indicates the uplink bandwidth in combination with the uplink bandwidth subfield in the general information field of the trigger frame can be specifically implemented as follows:

when the uplink bandwidth subfield value is 0 and the first subfield is equal to the reserve value, the uplink bandwidth is 20 MHz;

when the uplink bandwidth subfield value is 1 and the first subfield is equal to the reserve value, the uplink bandwidth is 40 MHz;

when the uplink bandwidth subfield value is 2 and the first subfield is equal to the reserve value, the uplink bandwidth is 80 MHz;

when the uplink bandwidth subfield value is 3 and the value of the first subfield is the sixth value, the uplink bandwidth is 160 MHz;

when the value of the uplink bandwidth subfield is 3 and the value of the first subfield is the seventh value, the uplink bandwidth is 240 MHz; and

when the uplink bandwidth subfield value is 3 and the value of the first subfield is the eighth value, the uplink bandwidth is 320 MHz.

The sixth value, seventh value, and eighth value are not equal to each other. The sixth value, seventh value, and eighth value can be chosen from the set {0, 1, 2, 3}. For example, the third value is 0, the fourth value is 1, and the fifth value is 2.

If necessary, the first subfield may have another name, such as an uplink bandwidth extension field. This embodiment of the present application is not limited to this.

(2) The second subfield. The second subfield indicates the puncturing pattern. It can be understood that the puncturing pattern is used to determine the punctured subchannel and the non-punctured subchannel in the 320 MHz channel. The punctured subchannel does not transmit a signal and includes a preamble and a data field. The granularity of the subchannel bandwidth can be 20 MHz if necessary.

In a possible variant, the second subfield includes the index of the puncturing pattern. In other words, the value of the second subfield is the index of the puncturing pattern.

It can be understood that M puncturing patterns may be specified in advance in the protocol, and M puncturing patterns correspond uniquely to M values of the second subfield, where M is an integer greater than or equal to 1. Thus, the first station can determine the corresponding puncturing pattern based on the value of the second subfield.

In another possible embodiment, the second subfield includes a bitmap. The bitmap includes K bits, where K is an integer greater than 1. The K bits correspond uniquely to (320/K) subchannels in a 320 MHz channel, and the bit values indicate whether the (320/K) subchannels corresponding to the bits are punctured.

For example, the bitmap included in the second subfield occupies 16 bits. Each bit in the bitmap corresponds to a 20 MHz subchannel in the 320 MHz channel. If the bit value is 0, it indicates that the 20 MHz subchannel corresponding to the bit is punctured. If the bit value is 1, it indicates that the 20 MHz subchannel corresponding to the bit is not punctured.

If necessary, the second subfield may have another name, such as a preamble puncturing indicator field. This embodiment of the present application is not limited to this.

(3) Third subfield. The third subfield indicates whether the first station transmits an HE PPDU or an EHT PPDU in one or more frequency segments of the uplink bandwidth.

It can be understood that the second station can only send HE PPDU. The first station can send both HE PPDU and EHT PPDU.

Option 1: If only the primary 160 MHz channel can be used for hybrid transmission of HE PPDU and EHT PPDU, and the bandwidth granularity for transmission of uplink sub-PPDU is 80 MHz, the third subfield may occupy two bits. The first bit of these two bits corresponds to the first 80 MHz channel, and the second bit corresponds to the second 80 MHz channel. The value of the first bit indicates whether the HE PPDU or EHT PPDU is transmitted on the first 80 MHz channel in the primary 160 MHz channel. The value of the second bit indicates whether the HE PPDU or EHT PPDU is transmitted on the second 80 MHz channel in the primary 160 MHz channel.

For definitions of the first 80 MHz and the second 80 MHz, see the previous descriptions. The details are not described again here.

For example, if the value of the first bit is 0, it indicates that the HE PPDU is transmitted on the first 80 MHz channel; and if the value of the first bit is 1, it indicates that the EHT PPDU is transmitted on the first 80 MHz bandwidth.

Alternatively, if the value of the first bit is 0, it indicates that the EHT PPDU is transmitted on the first 80 MHz channel; and if the value of the first bit is 1, it indicates that the HE PPDU is transmitted on the first 80 MHz bandwidth.

An example is used for the description with reference to Fig. 65. It is assumed that the bit value is 0, which indicates the need to transmit the HE PPDU; and the bit value is 1, which indicates the need to transmit the EHT PPDU. If the third subfield is 01, this indicates that the first station transmits the HE PPDU on the primary channel of 80 MHz in the primary bandwidth of 160 MHz, and the first station transmits the EHT PPDU on the secondary subchannel of 80 MHz in the primary bandwidth of 160 MHz.

Option 2: If only the primary 160 MHz channel can be used for hybrid transmission of HE PPDU and EHT PPDU, and the bandwidth granularity for uplink sub-PPDU transmission is 160 MHz, the third subfield may occupy one bit. One bit indicates whether the first station transmits HE PPDU or EHT PPDU in the primary 160 MHz bandwidth.

Option 3: If only the primary 160 MHz channel can be used for hybrid transmission of HE PPDUs and EHT PPDUs, and the bandwidth granularity for uplink sub-PPDU transmission is 20 MHz, the third subfield may occupy eight bits. The eight bits correspond uniquely to the eight 20 MHz channels in the primary 160 MHz channel. The value of each bit indicates whether the first station transmits an HE PPDU or an EHT PPDU on the 20 MHz channel corresponding to the bit.

Based on the above option 1-3, the first station can transmit EHT PPDUs on the secondary 160 MHz channel by default.

Case 4: If the entire 320 MHz channel can be used for hybrid transmission of HE PPDU and EHT PPDU, and the granularity of the bandwidth for transmission of uplink sub-PPDU is 80 MHz, the third subfield can occupy four bits. The four bits uniquely correspond to four 80 MHz channels in the 320 MHz bandwidth. The value of each bit indicates whether the first station transmits HE PPDU or EHT PPDU on the 80 MHz channel corresponding to the bit. It can be understood that if the uplink bandwidth is less than 320 MHz, the bit corresponding to the 80 MHz channel that is not included in the uplink bandwidth can be ignored or not used.

Case 5: If the entire 320 MHz channel can be used for hybrid transmission of HE PPDU and EHT PPDU, and the granularity of the bandwidth for transmission of uplink sub-PPDU is 160 MHz, the third subfield can occupy two bits. The two bits uniquely correspond to two 160 MHz channels in the 320 MHz bandwidth. The value of each bit indicates whether the first station transmits HE PPDU or EHT PPDU on the 160 MHz channel corresponding to the bit. It can be understood that if the uplink bandwidth is less than 320 MHz, the bit corresponding to the 160 MHz channel that is not in the uplink bandwidth can be ignored or not used.

Case 5: If the entire 320 MHz channel can be used for hybrid transmission of HE PPDU and EHT PPDU, and the granularity of the bandwidth for transmitting uplink sub-PPDU is 20 MHz, the third subfield can occupy 16 bits, and the 16 bits uniquely correspond to 16 channels of 20 MHz in the 320 MHz bandwidth. The value of each bit indicates whether the first station transmits HE PPDU or EHT PPDU on the 20 MHz channel corresponding to the bit. It can be understood that if the uplink bandwidth is less than 320 MHz, the bit corresponding to the 20 MHz channel that is not in the uplink bandwidth can be ignored or not used.

It can be understood that if the uplink bandwidth is less than 320 MHz, the bit corresponding to the 20 MHz channel, which is not in the uplink bandwidth, may be ignored or not used.

Option 7:

(1) If only the primary 160 MHz channel can be used for the hybrid transmission of HE PPDUs and EHT PPDUs, and the bandwidth granularity for the transmission of uplink sub-PPDUs is 80 MHz, the third subfield may include two PPDU PHY version fields. The first PPDU PHY version field in the PPDU PHY version fields corresponds to the first 80 MHz channel, and the second PPDU PHY version field in the PPDU PHY version fields corresponds to the second 80 MHz channel. The value of the first PPDU PHY version field indicates whether the HE PPDU, EHT PPDU, or other next-generation PPDU is transmitted on the first 80 MHz channel in the primary 160 MHz channel. The value of the PPDU PHY version field indicates whether the HE PPDU, EHT PPDU, or other next-generation PPDU is transmitted on the second 80 MHz channel in the primary 160 MHz channel. Since the next generation PPDU is not currently defined, the corresponding field value is equal to the reserved value.

For definitions of the first 80 MHz and the second 80 MHz, see the previous descriptions. The details are not described again here.

For example, if the first field of the PPDU PHY version has three bits, and the value of the first field of the PPDU PHY version is 0 (000 in binary), it indicates that the HE PPDU is transmitted on the first 80 MHz channel; and if the value of the first bit is 1 (001 in binary), it indicates that the EHT PPDU is transmitted on the first 80 MHz bandwidth.

Alternatively, if the value of the first field of the PPDU PHY version is 0, it indicates that the EHT PPDU is transmitted on the first 80 MHz channel; and if the value of the first bit is 7, it indicates that the HE PPDU is transmitted on the first 80 MHz bandwidth.

An example is used for the description with reference to Fig. 65. It is assumed that the value of the PPDU PHY version field is 0, which indicates the need to transmit the HE PPDU; and the value of the PPDU PHY version field is 1, which indicates the need to transmit the EHT PPDU. If the third subfield is 000 001, this indicates that the first station transmits the HE PPDU on the primary channel of 80 MHz in the primary bandwidth of 160 MHz, and the first station transmits the EHT PPDU on the secondary subchannel of 80 MHz in the primary bandwidth of 160 MHz.

(2) If only the primary 160 MHz channel can be used for hybrid transmission of HE PPDU and EHT PPDU, and the bandwidth granularity for uplink sub-PPDU transmission is 160 MHz, the third subfield may include one PPDU PHY version field. One PPDU PHY version field indicates whether the first station in the primary 160 MHz bandwidth transmits HE PPDU, EHT PPDU, or another next-generation PPDU.

(3) If it is limited that only the primary 160 MHz channel can be used for hybrid transmission of HE PPDUs and EHT PPDUs, and the bandwidth granularity for transmission of uplink sub-PPDUs is 20 MHz, the third subfield may include eight PPDU PHY version fields. The eight PPDU PHY version fields correspond uniquely to the eight 20 MHz channels in the primary 160 MHz channel. The value of each PPDU PHY version field indicates whether the first station transmits an HE PPDU, an EHT PPDU, or another next-generation PPDU on the 20 MHz channel corresponding to the PPDU PHY version field.

Based on the above (1)-(3), the first station can transmit EHT PPDUs on the secondary 160 MHz channel by default.

(4) If the entire 320 MHz channel can be used for hybrid transmission of HE PPDU and EHT PPDU, and the granularity of the bandwidth for transmitting uplink sub-PPDU is 80 MHz, the third subfield may include four PPDU PHY version fields. The four PPDU PHY version fields uniquely correspond to four 80 MHz channels in the 320 MHz bandwidth. The meaning of each PPDU PHY version field indicates whether the first station transmits HE PPDU, EHT PPDU or next-generation PPDU over the 80 MHz channel corresponding to the PPDU PHY version field. It can be understood that if the uplink bandwidth is less than 320 MHz, the PPDU PHY version field corresponding to the 80 MHz channel that is not in the uplink bandwidth may be ignored/omitted or not used.

(6) If the entire 320 MHz channel can be used for hybrid transmission of HE PPDU and EHT PPDU, and the granularity of the bandwidth for transmitting uplink sub-PPDU is 160 MHz, the third subfield may include two PPDU PHY version fields. The two PPDU PHY version fields uniquely correspond to two 160 MHz channels in the 320 MHz bandwidth. The meaning of each PPDU PHY version field indicates whether the first station transmits HE PPDU, EHT PPDU or next-generation PPDU over the 160 MHz channel corresponding to the PPDU PHY version field. It can be understood that if the uplink bandwidth is less than 320 MHz, the PPDU PHY version field corresponding to the 160 MHz channel that is not in the uplink bandwidth may be ignored/omitted or not used.

(5) If the entire 320 MHz channel can be used for hybrid transmission of HE PPDU and EHT PPDU, and the granularity of the bandwidth for transmitting uplink sub-PPDUs is 20 MHz, the third subfield may include 16 PPDU PHY version fields. The 16 PPDU PHY version fields uniquely correspond to 16 20 MHz channels in the 320 MHz bandwidth. The meaning of each PPDU PHY version field indicates whether the first station transmits HE PPDU, EHT PPDU, or next-generation PPDU over the 20 MHz channel corresponding to the PPDU PHY version field. It can be understood that if the uplink bandwidth is less than 320 MHz, the PPDU PHY version field corresponding to the 20 MHz channel that is not in the uplink bandwidth may be ignored/omitted or not used.

The devices according to the 802.11be standard can be divided into the first version and the second version. For the simplicity of the implementation of the station of the first version, it is proposed that the EHT AP of the first version does not support sending the trigger frame for hybrid scheduling. In other words, the uplink PPDU scheduled by the trigger frame is the uplink HE PPDU (or called the HE TB (trigger-based) PPDU) or the uplink TB EHT PPDU (or called the TB EHT (trigger-based) PPDU) instead of their hybrid PPDU or aggregated PPDU (A-PPDU). The EHT AP of the second version supports sending the trigger frame for hybrid scheduling. In other words, the uplink PPDU scheduled by the trigger frame may be the aggregate PPDU (A-PPDU), may be the above-mentioned uplink HE PPDU, or may be the above-mentioned uplink EHT PPDU.

In the first version of the 802.11be standard:

If the uplink PPDU scheduled by the trigger frame is an uplink HE PPDU, the third subfield in the trigger frame indicates that the uplink HE PPDUs are transmitted in all frequency segments. For example, in option 1, if two bits in the third subfield are both set to "00" (where 0 represents an uplink HE PPDU and 1 represents an uplink EHT PPDU), this indicates that the first station transmits an uplink HE PPDU in the primary bandwidth of 160 MHz. As another example, in option 2, if one bit in the third subfield is set to "0" (where 0 represents an uplink HE PPDU and 1 represents an uplink EHT PPDU), this indicates that the first station transmits an uplink HE PPDU in the primary bandwidth of 160 MHz.

If the uplink PPDU scheduled by the triggering frame is an uplink EHT PPDU, the third subfield shall be set to the value for transmitting an uplink EHT PPDU in all frequency slots. In addition, in this case, the triggering frame may not include the HE station user information field (in other words, the HE station shall transmit an uplink HE PPDU to avoid the uplink PPDU being an A-PPDU). For example, in case 1, if two bits in the third subfield are both set to "11" (where 0 represents an uplink HE PPDU and 1 represents an uplink EHT PPDU), this indicates that the first station transmits an uplink EHT PPDU in the primary bandwidth of 160 MHz. As another example, in option 2, if one bit in the third subfield is set to "1" (where 0 represents an uplink HE PPDU and 1 represents an uplink EHT PPDU), this indicates that the first station is transmitting an uplink EHT PPDU in the primary bandwidth of 160 MHz.

In the second version of the 802.11be standard, the uplink PPDU scheduled by the trigger frame can be an uplink HE PPDU, an uplink EHT PPDU, or an A-PPDU. In this case, the third subfield in the trigger frame can be set to any value, and no restrictions are required.

On the station side, the first station determines, based on the resource allocation subfield in the user information field, which is the same as the AID of the first station and which is in the received trigger frame and the third subfield, an uplink HE PPDU or an uplink EHT PPDU. The resource block allocation subfield is used to determine the frequency segment in which the resource block/multi-resource block combination allocated to the first station is located, and the resource block allocation subfield includes 9 bits, which are, in particular, the BS bit, the B0 bit, and other 7 bits.

That an 802.11ax station or an 802.11ac station supporting 160 MHz of bandwidth may combine legacy preambles on every 20 MHz of 160 MHz, such as the L-SIG field, or combine non-legacy preambles that are copied and transmitted on every 20 MHz of 160 MHz, such as the HE-SIG-A field in 802.11ax or the VHT-SIG-A field in 802.11ac. Therefore, it is proposed to prohibit hybrid transmission of uplink PPDU transmitted in the primary 160 MHz bandwidth to prevent incorrect reception of the preamble by an 802.11ax station or an 802.11ac station supporting 160 MHz of bandwidth. In this case, the frequency segment size (the granularity of the bandwidth for transmitting the uplink sub-PPDU) of the third subfield shall be 160 MHz, i.e., correspond to (2) and (6) in the above options 2, 6 and 7. In addition, the first station determines, based on the BS bit in the resource allocation subfield in the user information field, which corresponds to the AID of the first station and is in the received trigger frame and the third subfield, an uplink HE PPDU or an uplink EHT PPDU, where the BS bit indicates a primary bandwidth of 160 MHz or a secondary bandwidth of 160 MHz. The BS bit is specifically described as follows:

(I) If the BS bit in the resource block allocation subfield is "0", i.e., there is a primary bandwidth of 160 MHz, the first station determines, based on the value of this bit in the third subfield, the uplink PPDU to be transmitted. For example, if one bit in the third subfield is set to "1" (0 represents an uplink HE PPDU, and 1 represents an uplink EHT PPDU), the first station transmits an uplink EHT PPDU. In another example, if one bit in the third subfield is set to "0" (where 0 represents an uplink HE PPDU, and 1 represents an uplink HE PPDU), the first station transmits an uplink HE PPDU.

(II) If the BS bit in the resource block allocation subfield is "1", i.e. there is a secondary bandwidth of 160 MHz, the first station transmits an uplink EHT PPDU. It should be noted that the uplink HE PPDU is transmitted only in the primary bandwidth of 160 MHz, and is also used to ensure compatibility with the transmission capability of the existing HE station, i.e. the uplink HE PPDU can only be transmitted in the primary bandwidth of 160 MHz.

Alternatively, the BS bit may be as follows: (1) When the size of the RB/MRB combination indicated by the resource allocation subfield (9 bits) is less than or equal to 160 MHz, the BS bit indicates a primary bandwidth of 160 MHz or a secondary frequency of 160 MHz. (2) When the size of the RB/MRB combination indicated in the resource allocation subfield (9 bits) exceeds 160 MHz, the BS bit no longer indicates primary bandwidths of 160 MHz or secondary bandwidths of 160 MHz. In this case, the B0 bit in the resource allocation subfield may be shared. If necessary, one or more other bits of the resource allocation subfield may together indicate a combination of RBs and MRs, including the combinations of MRs shown in Fig. 7(4b) and a 4x996-subcarrier resource block.

In case (1), the first station determines, in accordance with the previous descriptions (I) and (II), which uplink PPDU (uplink PPDU type, including uplink HE PPDU and uplink EHT PPDU) is to be transmitted.

In case (2), currently only the EHT PPDU supports transmission in a combination of resource blocks/multi-resource blocks in a bandwidth greater than 160 MHz (the uplink HE PPDU does not support transmission in a combination of resource blocks/multi-resource blocks above 160 MHz). Therefore, in this case, the first station transmits the uplink EHT PPDU in a combination of resource blocks/multi-resource blocks. However, the first station shall determine, using the resource block allocation subfield, including one or more BS bits, the B0 bit and other seven bits, whether the size of the combination of allocated resource blocks/multi-resource blocks exceeds 160 MHz, that is, distinguish case (1) from case (2), in order to determine, in accordance with the method described in case (1) and case (2), which uplink PPDU is to be transmitted.

In order to help the first station to simply determine the type of uplink PPDU to be transmitted, the first station determines, based on the BS bit in the resource allocation subfield in the user information field, which corresponds to the AID of the first station and which is in the received trigger frame and the third subfield, an uplink HE PPDU or an uplink EHT PPDU without distinguishing between case (1) and case (2). The details are as follows:

In case (1), the first station still determines, according to the previous descriptions (I) and (II), the type of uplink PPDU to be transmitted.

In case (2), it is assumed that the BS bit can indicate that the combination of allocated resource blocks/multi-resource blocks definitely includes a resource block with a primary bandwidth of 160 MHz in a bandwidth of 320 MHz. In this case, if the BS bit is "0", the first station can further determine, based on the bit of the third subfield in option 2, the type of the transmitted uplink PPDU that corresponds to description (I). If the BS bit is "1", the size of the allocated resource block exceeds 160 MHz, and the first station transmits an uplink EHT PPDU that corresponds to description (II). In other words, in this case, the first station still determines, according to the previous descriptions (I) and (II), the type of the transmitted uplink PPDU.

Thus, without distinguishing between case (1) and case (2), after receiving the trigger frame, the first station determines, in accordance with the previous descriptions (I) and (II), the type of uplink PPDU to be transmitted.

If necessary, the third user information field of the trigger frame may not include the third subfield. When the third user information field does not include the third subfield, the station transmits the PPDU based on the latest capabilities of the station. For example, the first station may transmit the EHT PPDU by default. In this case, the first station transmits the EHT PPDU. The common field in the physical layer preamble includes the PHY version identifier field, and the value of the PHY version identifier field is set to the value corresponding to the EHT PPDU, for example, "0". As another example, a subsequent extended version of the first station may be scheduled to transmit the uplink EHT PPDU or the uplink HE PPDU. For the specific method, refer to the descriptions related to the third subfield.

If necessary, the third subfield may have another name, such as the EHT/HE pointer field. This embodiment of the present application is not limited to this.

In addition, after the AP sends the trigger frame, the trigger frame may include one or more of a user information field that requests an HE PPDU from the HE station and a user information field that requests an EHT/HE PPDU from the EHT station, for example, it may include both a user information field used for scheduling the HE station and a user information field used for scheduling the EHT station. The station responds to the uplink multi-user PPDU, and a parameter of a common field (or called a common signal field) of the physical layer preamble of the uplink EHT PPDU (the part of the EHT PPDU shown in Fig. 65) included in the uplink multi-user PPDU is obtained from the received trigger frame, for example, the uplink bandwidth. In addition, the common field of the uplink EHT PPDU includes fields such as the physical layer (PHY) version identifier field, the transmit opportunity (TXOP) field, the basic service set (BSS) color field, the cyclic redundancy code field, and the tail bit field. The PHY version identifier field in the common field in the physical layer preamble of the uplink EHT PPDU (or called EHT sub-PPDU), which is sent by the EHT station (the first station) in response to the trigger frame, can be obtained from the third subfield in the trigger frame. The details are as follows:

(1) One of options 1-6 is used for the trigger frame. If the third subfield of the trigger frame indicates that the HE PPDU is transmitted in one of the frequency segments, the EHT station transmits the HE PPDU in the frequency segment. The physical layer preamble, such as the High Effectiveness Signal A field, does not contain a PHY version identifier that matches the 802.11ax version identifier. If the third subfield of the trigger frame indicates that the EHT PPDU is transmitted in one of the frequency segments, the EHT station transmits the HE PPDU in the frequency segment where the HE PPDU carries a PHY version identifier field (e.g., 3 bits), and the PHY version identifier field is set to a value corresponding to the EHT PPDU, e.g., "0".

For example, in embodiment 1, an example is used for description with reference to Fig. 65. It is assumed that the bit value is 0, which indicates the need to transmit an HE PPDU; and the bit value is 1, which indicates the need to transmit an EHT PPDU. If the third subfield is 01, this indicates that the first station transmits the HE PPDU on a primary channel of 80 MHz in a primary bandwidth of 160 MHz, where the physical layer preamble does not include a PHY version identifier field. The first station transmits the EHT PPDU on a secondary subchannel of 80 MHz in a primary bandwidth of 160 MHz. The common field in the physical layer preamble includes a PHY version identifier field, and the value of the PHY version identifier field is set to a value corresponding to the EHT PPDU, for example, "0".

For another example, in option 2, it is assumed that a bit value of 0 indicates that an HE PPDU should be transmitted; and a bit value of 1 indicates that an EHT PPDU should be transmitted. For example, if the third subfield is 0, the first station transmits an HE PPDU on the primary 160 MHz channel, and the physical layer preamble does not include a PHY version identifier field. For example, if the third subfield is 1, the first station transmits an EHT PPDU on the primary 160 MHz channel. The common field in the physical layer preamble includes a PHY version identifier field, and the value of the PHY version identifier field is set to the value corresponding to the EHT PPDU, for example, "0".

(2) Option 7 is used for the trigger frame. If the third subfield of the trigger frame contains a PHY version identifier field corresponding to each frequency segment, the EHT station transmits the PPDU type indicated by the PHY version identifier field in the frequency segment. If the PHY version identifier field indicates HE PPDU, the physical layer preamble of the HE PPDU, such as the High Efficiency Signal A field, does not contain the PHY version identifier, which is the same as that of 802.11ax. If the PHY version identifier field indicates EHT PPDU, the EHT station transmits EHT PPDU in the frequency segment and directly copies the PHY version identifier field (e.g., 3 bits) corresponding to the frequency segment in the trigger frame, such as the value "0". If the PHY version identifier field specifies the next-generation PPDU of the EHT PPDU, the next-generation EHT station transmits the next-generation EHT PPDU in the frequency segment and directly copies the PHY version identifier field (e.g., 3 bits) corresponding to the frequency segment in the trigger frame, e.g., the value "1".

(4) Fourth subfield: The fourth subfield specifies the spatial reuse parameter that supports transmission in a 320 MHz bandwidth.

If necessary, the fourth subfield may have another name, such as an uplink spatial reuse extension field. The embodiment of the present application is not limited to this.

It can be understood that the third user information field may additionally carry another field. This embodiment of the present application is not limited to this.

In this embodiment of the present application, the third user information field further includes an AID subfield. The value in the AID subfield is a third specified value. The third specified value may be a reserve value in the AID subfield in the conventional technology. In other words, the third specified value may take any of the values from 2008 to 2044 or from 2047 to 4094.

If necessary, the third user information field may be the first user information field in the user information field list. In this way, after receiving the trigger frame, the first station can first extract the general information to be read from the third user information field. This can reduce the processing delay of the first station.

If necessary, when the first user information field and the third user information field are the same user information field, the first specified value is equal to the third specified value. Otherwise, the first specified value is not equal to the third specified value.

It can be understood that when the first user information field and the third user information field are implemented as one user information field, other bits in the user information field other than the AID subfield are used to carry signaling that the first user information field and the third user information field are to carry to implement the functions of the first user information field and the third user information field.

If necessary, when the second user information field and the third user information field are the same user information field, the second specified value is equal to the third specified value. Otherwise, the second specified value is not equal to the third specified value.

It can be understood that when the second user information field and the third user information field are implemented as one user information field, other bits in the user information field other than the AID subfield are used to carry signaling that the second user information field and the third user information field are to carry to implement the functions of the first user information field and the third user information field.

If necessary, the third user information field may be the first user information field in the user information field list. In this way, after receiving the trigger frame, the first station can first extract the general information to be read from the third user information field. This can reduce the processing delay of the first station.

It can be understood that the third user information field reuses the first user information field or the second user information field, so that the amount of signaling overhead can be reduced.

In this embodiment of the present application, the number of bits occupied by the third user information field is the same as the number of bits occupied by the user information field corresponding to the second station in the 802.11ax standard.

The maximum transmission bandwidth supported by the 802.11ax standard is 160 MHz, and the maximum transmission bandwidth supported by the 802.11be standard is 320 MHz. The 802.11be standard requires that the trigger frame be able to provide the first station with general information that supports transmission with a bandwidth of 320 MHz. However, the general information field of the trigger frame in the 802.11ax standard currently does not have enough spare bits to carry more general information. Therefore, it may be necessary to add the number of bits of the general information field of the trigger frame. However, adding the number of bits in the general information field of the trigger frame is equivalent to changing the structure of the trigger frame. Therefore, the modified trigger frame is incompatible with the trigger frame of the 802.11ax standard. Therefore, the modified trigger frame cannot initiate the second station to perform uplink transmission. Thus, how to make the trigger frame be able to carry more general information that needs to be read by the first station without adding to the number of bits occupied by the general information field of the trigger frame is a technical challenge that needs to be addressed urgently in the communications industry.

This technical problem can be solved by using the above-described implementation 2 for the trigger frame. In particular, the trigger frame uses the third user information field to carry additional common information to be read by the first station, so that the number of bits does not need to be added to the common information field of the trigger frame, thereby ensuring that the trigger frame provided in the present application can be compatible with the trigger frame in the 802.11ax standard. In other words, the trigger frame provided in the present application can initiate the first station to perform uplink transmission, and can also initiate the second station to perform uplink transmission.

If necessary, the general information of the first station carried in the third user information field may not be carried in the third user information field, but may be carried in the 9-bit uplink reserved field of HE-SIGA2 in the trigger frame. Based on this solution, the number of bits of the general information field of the trigger frame provided in this application is consistent with the number of bits of the general information field of the trigger frame in the 802.11ax standard. Thus, in addition to the reserved field or reserved values of some fields, the trigger frame provided in this application does not change the values of the existing fields.

Implementation 3: The user information list field in the start-up frame includes a user information field corresponding to the first station, and the user information field corresponding to the first station includes a spatial stream allocation subfield. When the spatial stream allocation subfield is applied to MU-MIMO, the spatial stream allocation subfield includes a spatial stream starting sequence number field and a spatial stream field number. The number of streams in which one user participates in MU-MIMO is limited, for example, the maximum number is 4. In this case, the spatial stream allocation subfield occupies four bits and indicates the starting sequence number of the spatial stream used by the station. The spatial stream field number occupies two bits and indicates the number of spatial streams used by the station. When the spatial stream allocation subfield is applied to SU or SU-MIMO, the spatial stream allocation subfield indicates the number of spatial streams.

The 802.11ax standard supports a maximum of eight spatial streams, while the 802.11be standard supports a maximum of 16 spatial streams. The spatial stream starting sequence number field in the spatial stream allocation subfield of the 802.11ax standard is three bits long and cannot specify 16 spatial stream sequence numbers. Therefore, the spatial stream allocation subfield of the 802.11ax standard cannot support the allocation of 16 spatial streams.

Based on the implementation 3, in the present application, the starting sequence number field of the spatial stream is increased from 3 bits to 4 bits, so that the starting sequence number field of the spatial stream, which occupies 4 bits, can indicate any starting location of 16 spatial streams; and the number of the spatial stream field is reduced from 3 bits to 2 bits to limit the maximum number of user streams participating in MU-MIMO to 4. Thus, based on the fact that the number of bits occupied by the spatial stream allocation subfield remains unchanged, the spatial stream allocation subfield can support the allocation of 16 spatial streams.

Implementation 4: The general information field in the trigger frame includes a Doppler frequency subfield and a number of HE-LTF/EHT-LTF symbols and a midamble periodicity subfield. The Doppler frequency subfield occupies one bit, and the number of HE-LTF/EHT-LTF symbols and the midamble periodicity subfield occupies three bits. The Doppler frequency subfield and the number of HE-LTF/EHT-LTF symbols are used as follows:

If the value of the Doppler frequency subfield is 0 and the value of the number of HE-LTF/EHT-LTF symbols and the midamble periodicity subfield is 0, the number of HE-LTF/EHT-LTF symbols and the midamble periodicity subfield indicates that the number of HE-LTF/EHT-LTF symbols is 1;

if the value of the Doppler frequency subfield is 0, and the value of the number of HE-LTF/EHT-LTF symbols and the midamble periodicity subfield is 1, the number of HE-LTF/EHT-LTF symbols and the midamble periodicity subfield indicates that the number of HE-LTF/EHT-LTF symbols is 2;

if the value of the Doppler frequency subfield is 0, and the value of the number of HE-LTF/EHT-LTF symbols and the midamble periodicity subfield is 2, the number of HE-LTF/EHT-LTF symbols and the midamble periodicity subfield indicates that the number of HE-LTF/EHT-LTF symbols is 4;

if the value of the Doppler frequency subfield is 0, and the value of the number of HE-LTF/EHT-LTF symbols and the midamble periodicity subfield is 3, the number of HE-LTF/EHT-LTF symbols and the midamble periodicity subfield indicates that the number of HE-LTF/EHT-LTF symbols is 6;

if the value of the Doppler frequency subfield is 0, and the value of the number of HE-LTF/EHT-LTF symbols and the midamble periodicity subfield is 4, the number of HE-LTF/EHT-LTF symbols and the midamble periodicity subfield indicates that the number of HE-LTF/EHT-LTF symbols is 8;

if the value of the Doppler frequency subfield is 0 and the value of the number of HE-LTF/EHT-LTF symbols and the midamble periodicity subfield is 5, the number of HE-LTF/EHT-LTF symbols and the midamble periodicity subfield indicates that the number of EHT-LTF symbols is the ninth value; or the value 5 of the number of HE-LTF/EHT-LTF symbols and the midamble periodicity subfield is equal to the reserve value;

if the value of the Doppler frequency subfield is 0 and the value of the number of HE-LTF/EHT-LTF symbols and the midamble periodicity subfield is 6, the number of HE-LTF/EHT-LTF symbols and the midamble periodicity subfield indicates that the number of EHT-LTF symbols is equal to the tenth value; or a value of 6 of the number of HE-LTF/EHT-LTF symbols and the midamble periodicity subfield is equal to the reserve value; and

If the value of the Doppler frequency subfield is 0 and the value of the number of HE-LTF/EHT-LTF symbols and the midamble periodicity subfield is 7, the number of HE-LTF/EHT-LTF symbols and the midamble periodicity subfield indicates that the number of EHT-LTF symbols is the eleventh value; or the value 7 of the number of HE-LTF/EHT-LTF symbols and the midamble periodicity subfield is equal to the reserve value.

The ninth value, the tenth value and the eleventh value are not equal to each other.

Option 1: The ninth value, tenth value, and eleventh value may be chosen from the set {10, 12, 14, 16}. For example, the ninth value is 10, the tenth value is 12, and the eleventh value is 16. Alternatively, the ninth value is 10, the tenth value is 16, and there is no eleventh value.

Option 2: The ninth value is 10, the tenth value is 12, and the eleventh value is an integer greater than or equal to 14.

Based on option 2, the EHT-LTF symbol extension field number shall be added to the trigger frame. Specifically, when the value of the HE-LTF/EHT-LTF symbol count and the midamble periodicity subfield is less than 7, the EHT-LTF symbol count extension field is not used. When the value of the HE-LTF/EHT-LTF symbol extension field number and the midamble periodicity subfield is 7, when the value of the EHT-LTF symbol extension field number is the twelfth value, the EHT-LTF symbol count extension field indicates that the number of EHT-LTF symbols is 14; and when the value of the EHT-LTF symbol extension field number is the thirteenth value, the EHT-LTF symbol count extension field indicates that the number of EHT-LTF symbols is 16.

For example, the twelfth value is 0 and the thirteenth value is 1; or the twelfth value is 1 and the thirteenth value is 1.

If necessary, the EHT-LTF symbol extension field may be carried in the third user information field or may be carried in the 9-bit uplink HE-SIGA2 reserved field in the trigger frame.

It can be understood that the number of HE-LTF/EHT-LTF symbols and the midamble periodicity subfield in the startup frame provided in this application is similar to the number of HE-LTF symbols and the midamble periodicity subfield in the startup frame in the 802.11ax standard.

If the trigger frame provided in this application includes a user information field corresponding to the second station, when the value of the Doppler frequency subfield is 0, the value of the number of HE-LTF/EHT-LTF symbols and the midamble periodicity subfield is less than or equal to 4. If the trigger frame provided in this application includes only a user information field corresponding to the first station and does not include a user information field corresponding to the second station, when the value of the Doppler frequency subfield is 0, the value of the number of HE-LTF/EHT-LTF symbols and the midamble periodicity subfield may take any value from 0 to 7.

S102: AP sends a trigger frame. Accordingly, the station receives the trigger frame.

A trigger frame is used to schedule one or more stations to send a response frame, and the response frame can be a data frame, an administration frame, or a control frame.

S103: The station is parsing the trigger frame.

If the station is the second station, when the trigger frame includes a user information field corresponding to the second station, the second station parses, in a parsing manner defined in the 802.11ax standard, the general information field in the trigger frame and the user information field corresponding to the second station. If the station is the first station, when the trigger frame includes a user information field corresponding to the first station, the first station parses, in a parsing manner defined in the 802.11be standard, the general information field in the trigger frame and the user information field corresponding to the first station.

If the AID in the user information field in the trigger frame matches the AID of the station, the station sends a response frame based on the general information field in the trigger frame and the user information field that matches the AID of the station, where the response frame is sent on the frequency domain resource specified by the resource allocation subfield in the user information field that matches the AID of the station.

Accordingly, the AP receives a response frame sent by one or more stations and responds using an acknowledgment frame. The acknowledgment frame sent to one or more stations may be sent as a downlink OFDMA or may be sent as a non-HT replication transmission. The acknowledgment frame further includes an Ack frame and a Block Ack frame, and the Block Ack frame includes a compressed Block Ack frame and a Multi-STA Block Ack frame. The Ack frame and the Block Ack frame are acknowledgment information of information sent to one station, and the Multi-STA Block Ack is acknowledgment information of information sent to one or more stations.

Based on the method shown in Fig. 8, the trigger frame provided in the present application can be compatible with the trigger frame in the 802.11 standard. Thus, the trigger frame provided in the present application can initiate the first station to perform uplink transmission, and can also initiate the second station to perform uplink transmission.

In the 802.11ax standard, an AP may send a downlink multi-user PPDU, such as OFDMA, full-band MU-MIMO, or a combination of OFDMA and MU-MIMO. The downlink multi-user PPDU may include MAC frames corresponding to a plurality of stations. The MAC frame corresponding to a station includes a TRS control field, and the TRS control field includes a control information field. As shown in Fig. 66, the control information field includes a UL data symbols field, a resource block allocation subfield, an AP TX power field, a UL target RSSI field, an UL MCS, and a reserved bit.

The control information field includes a resource block allocation subfield. To implement the resource block allocation subfield in the control information field, refer to the resource block allocation subfield in the user information field in the 802.11ax standard described above.

The maximum transmission bandwidth supported by the 802.11ax standard is 160 MHz, and the maximum transmission bandwidth supported by the 802.11be standard is 320 MHz. Therefore, when the uplink bandwidth is 320 MHz, the resource block allocation subfield in the control information field in the 802.11ax standard cannot accurately indicate whether the resource block is in the primary 160 MHz channel or the secondary 160 MHz channel. In addition, to ensure compatibility with the 802.11ax standard, no bit can be added to the control information field. Therefore, how to allow the resource block allocation subfield in the control information field to be used to allocate resources in the 320 MHz bandwidth without adding the number of bits to the control information field is a technical problem that needs to be urgently solved in the communication industry.

In order to solve the technical problem, an embodiment of the present application provides a communication method. As shown in Fig. 67, the method includes the following steps.

S201: The AP generates a downlink PPDU. The downlink PPDU includes a multi-user downlink PPDU, including an OFDMA PPDU and a MU-MIMO PPDU.

The downlink PPDU includes a MAC frame corresponding to one or more first stations. The MAC frame corresponding to the first station includes a TRS control field, the TRS control field includes a control information field, the control information field includes a resource block allocation subfield, and the resource block allocation subfield is used to allocate a resource block used by the first station.

In this embodiment of the present application, the resource block allocation subfield includes the following two implementations:

Implementation 1: The resource block allocation subfield occupies eight bits in the control information field. Specifically, the resource block allocation subfield occupies bits B5-B12 in the control information field.

In a possible embodiment, all or part of the frequency domain resource indicated in the resource block allocation subfield is located in a 160 MHz channel for transmitting the MAC frame that carries the resource allocation subfield in the TRS control field. If the frequency domain resource for transmitting the MAC frame that carries the resource allocation subfield in the TRS control field exceeds 160 MHz, the part of the frequency domain resource indicated in the resource allocation subfield is located in an 80 MHz channel or the part of the frequency domain resource indicated in the resource allocation subfield is located in a 160 MHz channel. It should be noted that the 8-bit resource allocation subfield can indicate any frequency domain resource that is in the 320 MHz bandwidth and is partially in the 80 MHz bandwidth. In other words, if a MAC frame is transmitted on a first 160 MHz channel, all or part of the frequency domain resource specified in the resource block allocation subfield carried in the MAC frame is located in the first 160 MHz channel. If a MAC frame is transmitted on a second 160 MHz channel, all or part of the frequency domain resource specified in the resource block allocation subfield carried in the MAC frame is located in the second 160 MHz channel.

In another possible embodiment, all or part of the frequency domain resource specified in the resource block allocation subfield is located in an 80 MHz channel for transmitting the MAC frame that carries the resource allocation subfield in the TRS control field. If the frequency domain resource for transmitting the MAC frame that carries the resource allocation subfield in the TRS control field exceeds 80 MHz, the part of the frequency domain resource specified in the resource allocation subfield is located in the 80 MHz channel.

Based on implementation 1, for a specific implementation of the resource block allocation subfield, please refer to the above related descriptions of the resource block allocation subfield in the fourth user information field.

Implementation 2: The resource block allocation subfield occupies nine bits in the control information field. Specifically, the resource block allocation subfield occupies bits B5-B12 and bit B25 or another bit such as bit B39 in the control information field.

The resource block allocation subfield may be divided into two parts. The first part of the resource block allocation subfield includes eight bits. The second part of the resource block allocation subfield includes one bit. For example, the first part of the resource block allocation subfield may occupy bits B5-B12 in the control information field, and the second part of the resource block allocation subfield may occupy bit B25 or another bit in the control information field. This embodiment of the present application is not limited to this.

In a possible embodiment, the first part of the resource block allocation subfield is used to allocate the frequency domain resource. The second part of the resource block allocation subfield indicates whether the allocated frequency domain resource is located in the first 160 MHz bandwidth or in the second 160 MHz bandwidth. If a part of the allocated frequency domain resource is at 160 MHz, in other words, the range of the frequency domain resource is larger than 160 MHz, then three methods are possible. Method 1: The part of the allocated frequency domain resource is located in the first 160 MHz bandwidth by default. Method 2: The part of the allocated frequency domain resource is located in the second 160 MHz bandwidth. Method 3: No restrictions are imposed, and the part of the allocated frequency domain resource is located in the first 160 MHz bandwidth or the second 160 MHz bandwidth.

For example, when the value of the second part of the resource block allocation subfield is 0, a part or all of the frequency domain resource indicated by the first part of the resource block allocation subfield is located in the first 160 MHz channel; and when the value of the second part of the resource block allocation subfield is 1, a part or all of the frequency domain resource indicated by the first part of the resource block allocation subfield is located in the second 160 MHz channel.

Based on implementation 2, for the specific implementation of the first part of the resource block allocation subfield, refer to the above related descriptions of the resource block allocation subfield in the user information field corresponding to the first station.

If necessary, the downlink PPDU may further include a MAC frame corresponding to one or more second stations.

S202: The AP sends a downlink PPDU. Accordingly, the station receives the downlink PPDU.

S203: The station sends a response frame based on the TRS field in the MAC frame in the received PPDU.

The response frame can be a data frame, an administration frame, or a control frame. For example, a control frame is an acknowledgement frame.

In addition, an example is used in which the station is the second station. When the downlink PPDU carries a MAC frame corresponding to the second station, the second station parses, in the order specified in the 802.11ax standard, the MAC frame corresponding to the second station and transmitted in the downlink PPDU. In this way, the second station can determine, based on the resource block allocation subfield carried in the MAC frame corresponding to the second station, the frequency domain resource allocated to the second station. In this case, an example is used in which the station is the first station. When the downlink PPDU carries a MAC frame corresponding to the first station, the first station parses, in the order specified in the 802.11be standard, the MAC frame corresponding to the second station and transmitted in the downlink PPDU. In this way, the first station can determine, based on the resource block allocation subfield carried in the MAC frame corresponding to the first station, the frequency domain resource allocated to the first station. After the station determines the frequency domain resource allocated to the station, the station can send an uplink sub-PPDU for the allocated frequency domain resource. In this way, the AP can receive a multi-user uplink PPDU including a plurality of uplink sub-PPDUs.

Based on the method shown in Fig. 67, on the one hand, the number of bits occupied by the control information field provided in the present application coincides with the number of bits occupied by the control information field in the 802.11ax standard, thereby ensuring compatibility with the 802.11ax standard. On the other hand, the resource block allocation subfield in the control information field provided in the present application makes it possible to implement resource block allocation in a bandwidth of 320 MHz.

In this embodiment of the present application, if a part of the frequency domain resource is located in a frequency segment of X MHz, this indicates that the range of the frequency domain resource is larger than the frequency segment of X MHz, where X = 20, 40, 80, 160, etc.

The solutions provided in the embodiments of the present application are mainly described above from the point of view of a communication device. It can be understood that in order to implement the above-mentioned functions, the communication device includes corresponding hardware structures and/or software modules for performing the functions. It should be understood by a person skilled in the art that, in combination with the modules and steps of the algorithm of the examples described in the embodiments disclosed in this specification, the present application can be implemented using hardware or a combination of hardware and computer software. Whether the function is performed by hardware or by hardware controlled by computer software depends on specific applications and design limitations of the technical solutions. A person skilled in the art can use different methods for implementing the described functions for each specific application, but it should not be considered that the implementation goes beyond the scope of the present application.

In the embodiments of the present application, the device can be divided into functional modules based on the above example methods. For example, each functional module can be obtained by dividing based on each corresponding function, or two or more functions can be combined into one functional module. The integrated module can be implemented as hardware or can be implemented as a functional module of software. In the embodiments of the present application, the division into modules is an example and is simply a logical division of functions. In the actual implementation, another division method may be used. Below, an example is used for description in which each functional module is obtained by dividing based on each corresponding function.

As shown in Fig. 68, an embodiment of the present application provides a communication device. The communication device includes a processing module 101 and a communication module 102.

When the communication device is used as an AP, the processing unit 101 is configured to perform step S101 in Fig. 8 or step S201 in Fig. 67. The communication unit 102 is configured to perform step S102 in Fig. 8 or step S202 in Fig. 67.

When the communication device is used as a station, the processing unit 101 is configured to perform step S103 in Fig. 8 or step S203 in Fig. 67. The communication unit 102 is configured to perform step S102 in Fig. 8 or step S202 in Fig. 67.

Fig. 69 shows a block diagram of a possible form of a communication device product according to an embodiment of the present application.

In a possible form of the product, the communication device in this embodiment of the present application may be a communication device, and the communication device includes a processor 201 and a transceiver 202. If necessary, the communication device further includes a data carrier 203.

When the communication device is used as an AP, the processor 201 is configured to perform step S101 in Fig. 8 or step S201 in Fig. 67. The transceiver 202 is configured to perform step S102 in Fig. 8 or step S202 in Fig. 67.

When the communication device is used as an STA, the processor 201 is configured to perform step S103 in Fig. 8 or step S203 in Fig. 67. The transceiver 202 is configured to perform step S102 in Fig. 8 or step S202 in Fig. 67.

In another possible form of the product, the communication device described in this embodiment of the present application may alternatively be implemented by a general-purpose processor or a special-purpose processor, which is commonly referred to as a chip. The chip includes a processing circuit 201 and a transceiver output 202. If necessary, the chip may include a data carrier 203.

In another possible product form, the communication device described in this embodiment of the present application may alternatively be implemented using the following circuit or component: one or more field programmable gate arrays (FPGA), programmable logic devices (PLD), controllers, state machines, gate logic, discrete hardware components, any other appropriate circuits, or any combination of circuits that can perform the functions described in the present application.

It should be understood that computer instructions may be stored on a computer-readable storage medium or may be transmitted from a computer-readable storage medium to another computer-readable storage medium. For example, computer instructions may be transmitted from a website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic cable, or digital subscriber line) or wirelessly (e.g., infrared waves, radio waves, or microwaves). A computer-readable storage medium may be any usable storage medium accessible to a computer, or a data storage device such as a server or data center that incorporates one or more usable storage media. The storage medium used may be a magnetic medium (e.g., a floppy disk, hard disk, or magnetic tape), an optical medium, a semiconductor medium (e.g., a solid-state drive), etc.

The above descriptions of the embodiments allow a person skilled in the art to understand that, for the purpose of convenient and concise description, the division into the above functional modules is used as an example for illustration. In a real application, the above functions can be distributed among different functional modules and implemented based on requirements, that is, the internal structure of the device is divided into different functional modules to implement all or some of the functions described above.

It should be understood that in several embodiments presented in this application, the disclosed devices and methods can be implemented in other ways. For example, the described embodiment of the device is simply an example. For example, the division into modules or blocks is simply a logical division of functions and in the actual implementation can be a different division. For example, a plurality of blocks or components can be combined or integrated into another device, or some functions can be ignored or not implemented. In addition, the shown or discussed mutual connections or direct connections or communication connections can be implemented through some interfaces. Indirect connections or communication connections between devices or blocks can be implemented in electronic, mechanical or other forms.

Blocks described as separate parts may or may not be physically separate, and parts depicted as blocks may be one or more physical blocks, may be located in one place, or may be distributed in different places. Some or all of the blocks may be selected based on actual requirements to achieve the objectives of the solutions of the embodiments.

In addition, the functional blocks in the embodiments of the present application may be integrated into one processor block, each block may physically exist separately, or two or more blocks may be integrated into one block. The integrated block may be implemented as hardware or may be implemented as a functional block of software.

When the integrated module is implemented as a functional block of software and sold or used as an independent product, the integrated module can be stored on a machine-readable data carrier. Based on this understanding, the technical solutions in the embodiments of the present application, essentially or partially, complementary to the traditional technology, or all or some of the technical solutions can be implemented as a software product. The software product is stored on a data carrier and includes several instructions that instruct a device (which can be a single-chip microcomputer, a microcircuit, etc.) or a processor to perform all or some of the steps of the methods described in the embodiments of the present application.

The above descriptions are merely specific implementations of the present application, but are not intended to limit the protection scope of the present application. Any change or replacement within the technical field disclosed in the present application shall fall within the protection scope of the present application. Therefore, the protection scope of the present application shall correspond to the protection scope of the claims.

Claims (234)

1. A communication method in which the method comprises: generating a trigger frame, wherein the trigger frame comprises a general information field and a fourth user information field, the general information field comprises an EHT/HE indicator field, the EHT/HE indicator field indicates whether the first station transmits an HE PPDU or an EHT PPDU in one or more frequency segments in the uplink bandwidth, the fourth user information field comprises an association identifier (AID) subfield and a resource block allocation subfield, the AID subfield indicates an association identifier of one first station, and the resource block allocation subfield is used to allocate a frequency domain resource for the one first station; and sending a trigger frame. 2. The method according to claim 1, wherein the EHT/HE pointer field occupies one bit. 3. The method according to claim 1 or 2, wherein the EHT/HE indicator field specifically indicates that the first station transmits an HE PPDU or an EHT PPDU in the 160 MHz primary frequency segment. 4. The method of claim 3, wherein a secondary frequency segment of 160 MHz is used to transmit the EHT PPDU. 5. The method of claim 1, wherein the resource block allocation subfield comprises a BS bit and the BS bit and the EHT/HE indicator field are used together to determine whether one first station transmits an HE PPDU or an EHT PPDU. 6. The method of claim 5, wherein the BS bit and the EHT/HE indicator field are used together to determine whether one first station is transmitting an HE PPDU or an EHT PPDU, comprising: If the BS bit value is 0, the EHT/HE indicator field is used to determine whether the first station is transmitting an HE PPDU or an EHT PPDU. 7. The method of claim 5, wherein the BS bit and the EHT/HE indicator field are used together to determine whether one first station is transmitting either an HE PPDU or an EHT PPDU, comprising: If the BS bit value is 1, the first station transmits an EHT PPDU. 8. The method according to any one of paragraphs 5-7, in which the BS bit occupies bit B39 in the fourth user information field. 9. The method according to any one of paragraphs 1-8, wherein the method further comprises: receiving an uplink MAC frame from one first station, wherein the uplink MAC frame is transmitted on a frequency domain resource allocated by the resource block allocation subfield in the fourth user information subfield; and sending an acknowledgement frame to the first station. 10. The method according to any one of paragraphs 1-9, in which the trigger frame further comprises a third user information field and the third user information field carries general information about the first station. 11. The method according to claim 10, wherein the value of the AID subfield in the third user information field is the first specified value. 12. The method according to claim 10 or 11, wherein the number of bits occupied by the third user information field coincides with the number of bits occupied by the user information field corresponding to the second station in the 802.11ax standard, and the second station does not support the 802.11 standard after the 802.11ax standard, but supports the 802.11ax standard and an earlier standard. 13. The method according to any one of paragraphs 10-12, in which the third user information field comprises one or more of the following: a first subfield, wherein the first subfield indicates an uplink bandwidth in combination with the uplink bandwidth subfield in the general information field of the trigger frame; and fourth subfield, where the fourth subfield specifies a spatial reuse parameter that supports transmission in a 320 MHz bandwidth. 14. The method according to claim 13, wherein the first subfield occupies two bits. 15. The method according to any one of claims 1-14, wherein the fourth user information field comprises a spatial stream allocation subfield, and the spatial stream allocation subfield comprises a spatial stream initial sequence number field and a spatial stream field number; the spatial stream initial sequence number field occupies four bits and indicates the initial sequence number of the spatial stream used by the station; and the spatial stream field number occupies two bits and indicates the number of spatial streams used by the station. 16. The method according to any one of paragraphs. 1-15, in which the number of bits occupied by the general information field of the trigger frame coincides with the number of bits occupied by the general information field of the trigger frame in the 802.11ax standard. 17. The method according to any one of paragraphs. 1-16, in which the first station supports the 802.11 standard after the 802.11ax standard. 18. A communication method in which the method comprises: receiving a trigger frame, wherein the trigger frame comprises a general information field and a fourth user information field, the general information field comprises an EHT/HE indicator field, the EHT/HE indicator field indicates whether the first station transmits an HE PPDU or an EHT PPDU in one or more frequency slots in the uplink bandwidth, the fourth user information field comprises an association identifier (AID) subfield and a resource block allocation subfield, the AID subfield indicates an association identifier of one first station, and the resource block allocation subfield is used to allocate a frequency domain resource for one first station; and sending PPDUs on the uplink in accordance with the trigger frame. 19. The method of claim 18, wherein sending the uplink PPDU in accordance with the trigger frame comprises: determining an uplink PPDU type based on the EHT/HE indicator field, wherein the uplink PPDU type comprises an HE PPDU or an EHT PPDU; and sending PPDUs on the uplink. 20. The method according to claim 18 or 19, wherein the EHT/HE pointer field occupies one bit. 21. The method of any one of claims 18-20, wherein the EHT/HE indicator field specifically indicates whether the first station is transmitting an HE PPDU or an EHT PPDU in the 160 MHz primary frequency segment. 22. The method of claim 21, wherein a secondary frequency segment of 160 MHz is used to transmit the EHT PPDU. 23. The method of claim 19, wherein the resource block allocation subfield comprises a BS bit; and uplink PPDU type determination based on the EHT/HE pointer field and the BS bit. 24. The method according to claim 23, wherein, if the value of the BS bit is 0, the EHT/HE pointer field specifies the uplink PPDU type based on the EHT/HE pointer field, where the uplink PPDU type contains the HE PPDU or the EHT PPDU. 25. The method according to claim 23, wherein, If the BS bit value is 1, the uplink PPDU type is EHT PPDU. 26. The method according to any one of paragraphs 23-25, in which the BS bit occupies bit B39 in the fourth user information field. 27. The method according to any one of paragraphs 18-26, in which the trigger frame further comprises a third user information field and the third user information field carries general information about the first station. 28. The method according to claim 27, wherein the value of the AID subfield in the third user information field is the first specified value. 29. The method according to claim 27 or 28, wherein the number of bits occupied by the third user information field coincides with the number of bits occupied by the user information field corresponding to the second station in the 802.11ax standard, and the second station does not support the 802.11 standard after the 802.11ax standard, but supports the 802.11ax standard and an earlier standard. 30. The method according to any one of paragraphs 27-29, in which the third user information field comprises one or more of the following: a first subfield, wherein the first subfield indicates an uplink bandwidth in combination with the uplink bandwidth subfield in the general information field of the trigger frame; and fourth subfield, where the fourth subfield specifies a spatial reuse parameter that supports transmission in a 320 MHz bandwidth. 31. The method of claim 30, wherein the first subfield occupies two bits. 32. The method according to any one of paragraphs. 18-31, in which the fourth user information field comprises a spatial stream allocation subfield and the spatial stream allocation subfield comprises a spatial stream initial sequence number field and a spatial stream field number; the spatial stream initial sequence number field occupies four bits and indicates the initial sequence number of the spatial stream used by the station; and the spatial stream field number occupies two bits and indicates the number of spatial streams used by the station. 33. The method according to any one of paragraphs 18-32, in which the number of bits occupied by the general information field of the trigger frame coincides with the number of bits occupied by the general information field of the trigger frame in the 802.11ax standard. 34. The method according to any one of paragraphs 18-33, in which the first station supports the 802.11 standard after the 802.11ax standard. 35. A communication method in which the method comprises: generating a trigger frame, wherein the trigger frame comprises a fourth user information field, the fourth user information field comprises an association identifier (AID) subfield and a BS bit, the AID subfield indicating an association identifier of the first station and the BS bit indicating a frequency segment in which a frequency domain resource allocated to the first station is located; and sending a trigger frame. 36. The method according to claim 35, wherein the BS bit occupies bit B39 in the fourth user information field. 37. The method according to claim 35 or 36, wherein, if the value of the BS bit is 0, this indicates that part or all of the frequency domain resource allocated to the first station is in the 160 MHz primary frequency segment; or, If the BS bit value is 1, it indicates that part or all of the frequency domain resource allocated to the first station is in the 160 MHz secondary frequency segment. 38. The method according to claim 37, wherein the resource block allocation subfield of the fourth user information field contains the B0 bit; and, If the value of the BS bit is 0 and the value of the B0 bit in the resource block allocation subfield is 0, this indicates that part or all of the frequency domain resource allocated to the first station is in the 80 MHz primary frequency segment. 39. The method according to claim 37 or 38, wherein the resource block allocation subfield of the fourth user information field contains the B0 bit; and, If the value of the BS bit is 0 and the value of the B0 bit in the resource block allocation subfield is 1, this indicates that part or all of the frequency domain resource allocated to the first station is in the 80 MHz secondary frequency segment. 40. The method according to any one of paragraphs 37-39, in which the resource block allocation subfield of the fourth user information field contains the B0 bit; and, If the value of the BS bit is 1 and the value of the B0 bit in the resource block allocation subfield is 0, this indicates that part or all of the frequency domain resource allocated to the first station is in the 80 MHz frequency segment with the lowest frequency in the 160 MHz secondary frequency segment. 41. The method according to any one of paragraphs 37-40, in which the resource block allocation subfield of the fourth user information field contains the B0 bit; and, If the value of the BS bit is 1 and the value of the B0 bit in the resource block allocation subfield is 1, this indicates that part or all of the frequency domain resource allocated to the first station is in the 80 MHz frequency segment with the highest frequency in the 160 MHz secondary frequency segment. 42. The method according to any one of paragraphs 35-41, in which the resource block allocation subfield of the fourth user information field additionally contains bits B1-B7. 43. The method according to claim 42, in which two values of bits B1-B7 in the resource block allocation subfield correspond to the combination of 996+484 resource blocks. 44. The method according to claim 42, in which The four values of bits B1-B7 in the resource block allocation subfield correspond to the combination of 996+484+242 resource blocks. 45. The method according to claim 42, in which two values of bits B1-B7 in the resource block allocation subfield correspond to the combination of 3x996+484 resource blocks. 46. The method according to claim 42, in which The four values of bits B1-B7 in the resource block allocation subfield correspond to the combination of 2x996+484 resource blocks. 47. The method according to claim 42, wherein the 12 values of bits B1-B7 in the resource block allocation subfield correspond to a combination of 52+26 resource blocks. 48. The method according to claim 42, in which The eight values of bits B1-B7 in the resource block allocation subfield correspond to the combination of 106+26 resource blocks. 49. The method according to any one of paragraphs 35-48, in which the trigger frame further comprises a general information field, wherein the general information field further comprises an EHT/HE indicator field and the EHT/HE indicator field indicates whether the first station transmits an HE PPDU or an EHT PPDU in one or more frequency segments of the uplink bandwidth. 50. The method of claim 49, wherein the EHT/HE pointer field occupies one bit. 51. The method of claim 49 or 50, wherein the EHT/HE indicator field specifically indicates whether the first station is transmitting an HE PPDU or an EHT PPDU in the 160 MHz base frequency segment. 52. The method of claim 51, wherein the 160 MHz secondary frequency segment is used to transmit EHT PPDUs. 53. A communication method in which the method comprises: receiving a trigger frame, wherein the trigger frame comprises a fourth user information field, the fourth user information field comprises an association identifier (AID) subfield and a BS bit, the AID subfield indicating an association identifier of the first station and the BS bit indicating a frequency segment in which a frequency domain resource allocated to the first station is located; and sending PPDUs on the uplink in accordance with the trigger frame. 54. The method according to claim 53, wherein the BS bit occupies bit B39 in the fourth user information field. 55. The method according to item 53 or 54, in which if the value of the BS bit is 0, this indicates that part or all of the frequency domain resource allocated to the first station is in the 160 MHz primary frequency segment; or, If the BS bit value is 1, it indicates that part or all of the frequency domain resource allocated to the first station is in the 160 MHz secondary frequency segment. 56. The method according to claim 55, wherein the resource block allocation subfield of the fourth user information field comprises a B0 bit; and, If the value of the BS bit is 0 and the value of the B0 bit in the resource block allocation subfield is 0, this indicates that part or all of the frequency domain resource allocated to the first station is in the 80 MHz primary frequency segment. 57. The method according to claim 55 or 56, wherein the resource block allocation subfield of the fourth user information field contains the B0 bit; and, If the value of the BS bit is 0 and the value of the B0 bit in the resource block allocation subfield is 1, this indicates that part or all of the frequency domain resource allocated to the first station is in the 80 MHz secondary frequency segment. 58. The method according to any one of paragraphs 55-57, in which the resource block allocation subfield of the fourth user information field contains the B0 bit; and, If the value of the BS bit is 1 and the value of the B0 bit in the resource block allocation subfield is 0, this indicates that part or all of the frequency domain resource allocated to the first station is in the 80 MHz frequency segment with a lower frequency in the 160 MHz secondary frequency segment. 59. The method according to any one of paragraphs 56-58, in which the resource block allocation subfield of the fourth user information field contains the B0 bit; and, If the value of the BS bit is 1 and the value of the B0 bit in the resource block allocation subfield is 1, this indicates that part or all of the frequency domain resource allocated to the first station is in the 80 MHz frequency segment with a higher frequency in the 160 MHz secondary frequency segment. 60. The method according to any one of paragraphs 53-59, in which the resource block allocation subfield additionally comprises bits B1-B7. 61. The method according to claim 60, in which two values of bits B1-B7 in the resource block allocation subfield correspond to the combination of 996+484 resource blocks. 62. The method according to claim 60, in which The four values of bits B1-B7 in the resource block allocation subfield correspond to the combination of 996+484+242 resource blocks. 63. The method according to claim 60, in which two values of bits B1-B7 in the resource block allocation subfield correspond to the combination of 3x996+484 resource blocks. 64. The method according to claim 60, wherein The four values of bits B1-B7 in the resource block allocation subfield correspond to the combination of 2x996+484 resource blocks. 65. The method according to claim 60, in which The 12 values of bits B1-B7 in the resource block allocation subfield correspond to the combination of 52+26 resource blocks. 66. The method according to claim 60, in which The eight values of bits B1-B7 in the resource block allocation subfield correspond to the combination of 106+26 resource blocks. 67. The method according to any one of paragraphs 53-66, in which the trigger frame further comprises a general information field, wherein the general information field further comprises an EHT/HE indicator field and the EHT/HE indicator field indicates whether the first station transmits an HE PPDU or an EHT PPDU in one or more frequency segments of the uplink bandwidth. 68. The method of claim 67, wherein the EHT/HE pointer field occupies one bit. 69. The method of claim 67 or 68, wherein the EHT/HE indicator field specifically indicates that the first station transmits an HE PPDU or an EHT PPDU on the base frequency of 160 MHz. 70. The method of claim 69, wherein the 160 MHz secondary band is used to transmit EHT PPDUs. 71. A communication method in which the method comprises: receiving a trigger frame, wherein the trigger frame comprises a user information field, wherein the user information field comprises an AID subfield, a first bit and a second bit, the AID subfield indicating an association identifier of the station and the first bit and the second bit together indicating an absolute location of a frequency segment in the uplink bandwidth, wherein a frequency domain resource allocated to the station is located in the frequency segment; and determining the absolute location of a frequency segment in the uplink bandwidth based on the first bit and the second bit. 72. The method of claim 71, wherein, when the uplink bandwidth is a 320 MHz bandwidth, if the primary 80 MHz frequency segment is the 80 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth, the secondary 80 MHz frequency segment is the 80 MHz frequency segment with the secondary lowest frequency in the 320 MHz bandwidth, and the secondary 160 MHz frequency segment is the 160 MHz frequency segment with the highest frequency in the 320 MHz bandwidth, determining the absolute location of the target 80 MHz frequency segment in the 320 MHz bandwidth based on the first bit and the second bit comprises: if the value of the first bit is 0 and the value of the second bit is 0, determining that the frequency segment is an 80 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth; if the value of the first bit is 0 and the value of the second bit is 1, determining that the frequency segment is an 80 MHz frequency segment with a secondary lowest frequency in the 320 MHz bandwidth; if the value of the first bit is 1 and the value of the second bit is 0, determining that the frequency segment is an 80 MHz frequency segment with a secondary highest frequency in the 320 MHz bandwidth; or, if the value of the first bit is 1 and the value of the second bit is 1, determining that the frequency segment is an 80 MHz frequency segment with the highest frequency in the 320 MHz bandwidth. 73. The method of claim 71, wherein, when the uplink bandwidth is a 320 MHz bandwidth, if the 80 MHz primary frequency segment is an 80 MHz frequency segment and the secondary lowest frequency is in the 320 MHz bandwidth, the 80 MHz secondary frequency segment is an 80 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth and the 160 MHz secondary frequency segment is a 160 MHz frequency segment with the highest frequency in the 320 MHz bandwidth, determining the absolute location of the target 80 MHz frequency segment in the 320 MHz bandwidth based on the first bit and the second bit comprises: if the value of the first bit is 0 and the value of the second bit is 0, determining that the frequency segment is an 80 MHz frequency segment with a secondary lowest frequency in the 320 MHz bandwidth; if the value of the first bit is 0 and the value of the second bit is 1, determining that the frequency segment is an 80 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth; if the value of the first bit is 1 and the value of the second bit is 0, determining that the frequency segment is an 80 MHz frequency segment with a secondary highest frequency in the 320 MHz bandwidth; or, if the value of the first bit is 1 and the value of the second bit is 1, determining that the frequency segment is an 80 MHz frequency segment with the highest frequency in the 320 MHz bandwidth. 74. The method of claim 71, wherein, when the uplink bandwidth is a 320 MHz bandwidth, if the 80 MHz primary frequency segment is an 80 MHz frequency segment and the secondary highest frequency is in the 320 MHz bandwidth, the 80 MHz secondary frequency segment is an 80 MHz frequency segment with the highest frequency in the 320 MHz bandwidth and the 160 MHz secondary frequency segment is a 160 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth, determining the absolute location of the target 80 MHz frequency segment in the 320 MHz bandwidth based on the first bit and the second bit comprises: if the value of the first bit is 0 and the value of the second bit is 0, determining that the frequency segment is an 80 MHz frequency segment with a secondary highest frequency in the 320 MHz bandwidth; if the value of the first bit is 0 and the value of the second bit is 1, determining that the frequency segment is an 80 MHz frequency segment with the highest frequency in the 320 MHz bandwidth; if the value of the first bit is 1 and the value of the second bit is 0, determining that the frequency segment is an 80 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth; or, if the value of the first bit is 1 and the value of the second bit is 1, determining that the frequency segment is an 80 MHz frequency segment with a secondary lowest frequency in the bandwidth of 320 MHz. 75. The method of claim 71, wherein, when the uplink bandwidth is a 320 MHz bandwidth, if the 80 MHz primary frequency segment is the 80 MHz frequency segment with the highest frequency in the 320 MHz bandwidth, the 80 MHz secondary frequency segment is the 80 MHz frequency segment with the secondary highest frequency in the 320 MHz bandwidth, and the 160 MHz secondary frequency segment is the 160 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth, determining the absolute location of the target 80 MHz frequency segment in the 320 MHz bandwidth based on the first bit and the second bit comprises: if the value of the first bit is 0 and the value of the second bit is 0, determining that the frequency segment is an 80 MHz frequency segment with the highest frequency in the 320 MHz bandwidth; if the value of the first bit is 0 and the value of the second bit is 1, determining that the frequency segment is an 80 MHz frequency segment with a secondary highest frequency in the 320 MHz bandwidth; if the value of the first bit is 1 and the value of the second bit is 0, determining that the frequency segment is an 80 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth; or, if the value of the first bit is 1 and the value of the second bit is 1, determining that the frequency segment is an 80 MHz frequency segment with a secondary lowest frequency in the bandwidth of 320 MHz. 76. The method of claim 71, wherein determining the absolute location of the frequency segment in the uplink bandwidth based on the first bit and the second bit comprises: determining a value of an absolute frequency indicator parameter based on the first bit and the second bit, wherein the absolute frequency indicator parameter comprises two bits and the absolute frequency indicator parameter indicates an absolute location of the frequency segment in the uplink bandwidth. 77. The method according to claim 76, wherein, if the value of one bit in the absolute frequency indicator parameter is 0 and the value of the other bit is 0, it indicates that the frequency segment is an 80 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth; if the value of one bit in the absolute frequency indicator parameter is 0 and the value of the other bit is 1, this indicates that the frequency segment is an 80 MHz frequency segment with a secondary lowest frequency in the 320 MHz bandwidth; if the value of one bit in the absolute frequency indicator parameter is 1 and the value of the other bit is 0, this indicates that the frequency segment is an 80 MHz frequency segment with a secondary highest frequency in the 320 MHz bandwidth; or, If the value of one bit in the absolute frequency indicator parameter is 1 and the value of the other bit is 1, this indicates that the frequency segment is an 80 MHz frequency segment with the highest frequency in the 320 MHz bandwidth. 78. The method of claim 77, wherein, when the uplink bandwidth is a 320 MHz bandwidth, if the 80 MHz primary frequency segment is the 80 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth, the 80 MHz secondary frequency segment is the 80 MHz frequency segment with the secondary lowest frequency in the 320 MHz bandwidth, and the 160 MHz secondary frequency segment is the 160 MHz frequency segment with the highest frequency in the 320 MHz bandwidth, the station determining the absolute frequency indicator parameter value based on the first bit and the second bit comprises: if the value of the first bit is 0 and the value of the second bit is 0, determining that the value of one bit in the absolute frequency pointer parameter is 0 and the value of the other bit is 0; if the value of the first bit is 0 and the value of the second bit is 1, determining that the value of one bit in the absolute frequency pointer parameter is 0 and the value of the other bit is 1; if the value of the first bit is 1 and the value of the second bit is 0, determining that the value of one bit in the absolute frequency pointer parameter is 1 and the value of the other bit is 0; or, if the value of the first bit is 1 and the value of the second bit is 1, determining that the value of one bit in the absolute frequency pointer parameter is 1 and the value of the other bit is 1. 79. The method of claim 77, wherein when the uplink bandwidth is a 320 MHz bandwidth, if the 80 MHz primary frequency segment is an 80 MHz frequency segment and the secondary lowest frequency is in the 320 MHz bandwidth, the 80 MHz secondary frequency segment is an 80 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth and the 160 MHz secondary frequency segment is a 160 MHz frequency segment with the highest frequency in the 320 MHz bandwidth, the station determining the absolute frequency indicator parameter value based on the first bit and the second bit comprises: if the value of the first bit is 0 and the value of the second bit is 0, determining that the value of one bit in the absolute frequency pointer parameter is 0 and the value of the other bit is 1; if the value of the first bit is 0 and the value of the second bit is 1, determining that the value of one bit in the absolute frequency pointer parameter is 0 and the value of the other bit is 0; if the value of the first bit is 1 and the value of the second bit is 1, determining that the value of one bit in the absolute frequency pointer parameter is 1 and the value of the other bit is 0; or, if the value of the first bit is 1 and the value of the second bit is 1, determining that the value of one bit in the absolute frequency pointer parameter is 1 and the value of the other bit is 1. 80. The method of claim 77, wherein, when the uplink bandwidth is a 320 MHz bandwidth, if the 80 MHz primary frequency segment is an 80 MHz frequency segment and the secondary highest frequency is in the 320 MHz bandwidth, the 80 MHz secondary frequency segment is an 80 MHz frequency segment with the highest frequency in the 320 MHz bandwidth and the 160 MHz secondary frequency segment is a 160 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth, the station determining the absolute frequency indicator parameter value based on the first bit and the second bit comprises: if the value of the first bit is 0 and the value of the second bit is 0, determining that the value of one bit in the absolute frequency pointer parameter is 1 and the value of the other bit is 0; if the value of the first bit is 0 and the value of the second bit is 1, determining that the value of one bit in the absolute frequency pointer parameter is 1 and the value of the other bit is 1; if the value of the first bit is 1 and the value of the second bit is 0, determining that the value of one bit in the absolute frequency pointer parameter is 0 and the value of the other bit is 0; or, if the value of the first bit is 1 and the value of the second bit is 1, determining that the value of one bit in the absolute frequency pointer parameter is 0 and the value of the other bit is 1. 81. The method of claim 77, wherein, when the uplink bandwidth is a 320 MHz bandwidth, if the 80 MHz primary frequency segment is the 80 MHz frequency segment with the highest frequency in the 320 MHz bandwidth, the 80 MHz secondary frequency segment is the 80 MHz frequency segment with the secondary highest frequency in the 320 MHz bandwidth, and the 160 MHz secondary frequency segment is the 160 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth, the station determining the absolute frequency indicator parameter value based on the first bit and the second bit comprises: if the value of the first bit is 0 and the value of the second bit is 0, determining that the value of one bit in the absolute frequency pointer parameter is 1 and the value of the other bit is 1; if the value of the first bit is 0 and the value of the second bit is 1, determining that the value of one bit in the absolute frequency pointer parameter is 1 and the value of the other bit is 0; if the value of the first bit is 1 and the value of the second bit is 0, determining that the value of one bit in the absolute frequency pointer parameter is 0 and the value of the other bit is 0; or, if the value of the first bit is 1 and the value of the second bit is 1, determining that the value of one bit in the absolute frequency pointer parameter is 0 and the value of the other bit is 1. 82. A communication method in which the method comprises: generating a trigger frame, wherein the trigger frame comprises a user information field, wherein the user information field comprises an AID subfield, a first bit and a second bit, the AID subfield indicating an association identifier of the station and the first bit and the second bit together indicating an absolute location of a frequency segment in the uplink bandwidth, wherein a frequency domain resource allocated to the station is located in the frequency segment; and sending a trigger frame. 83. The method of claim 82, wherein, when the uplink bandwidth is a 320 MHz bandwidth, if the 80 MHz primary frequency segment is the 80 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth, the 80 MHz secondary frequency segment is the 80 MHz frequency segment with the secondary lowest frequency in the 320 MHz bandwidth, and the 160 MHz secondary frequency segment is the 160 MHz frequency segment with the highest frequency in the 320 MHz bandwidth, that the first bit and the second bit together indicate the absolute location of the frequency segment in the uplink bandwidth comprises: if the value of the first bit is 0 and the value of the second bit is 0, the frequency segment is the 80 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth; if the value of the first bit is 0 and the value of the second bit is 1, the frequency segment is an 80 MHz frequency segment with a secondary lowest frequency in the 320 MHz bandwidth; if the value of the first bit is 1 and the value of the second bit is 0, the frequency segment is an 80 MHz frequency segment with a secondary highest frequency in the 320 MHz bandwidth; or, If the value of the first bit is 1 and the value of the second bit is 1, the frequency segment is the 80 MHz frequency segment with the highest frequency in the 320 MHz bandwidth. 84. The method of claim 82, wherein, when the uplink bandwidth is a 320 MHz bandwidth, if the 80 MHz primary frequency segment is an 80 MHz frequency segment and the secondary lowest frequency is in the 320 MHz bandwidth, the 80 MHz secondary frequency segment is an 80 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth and the 160 MHz secondary frequency segment is a 160 MHz frequency segment with the highest frequency in the 320 MHz bandwidth, that the first bit and the second bit together indicate an absolute location of the frequency segment in the uplink bandwidth, comprises: if the value of the first bit is 0 and the value of the second bit is 0, the frequency segment is an 80 MHz frequency segment with a secondary lowest frequency in the 320 MHz bandwidth; if the value of the first bit is 0 and the value of the second bit is 1, the frequency segment is the 80 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth; if the value of the first bit is 1 and the value of the second bit is 0, the frequency segment is an 80 MHz frequency segment with a secondary highest frequency in the 320 MHz bandwidth; or, If the value of the first bit is 1 and the value of the second bit is 1, the frequency segment is the 80 MHz frequency segment with the highest frequency in the 320 MHz bandwidth. 85. The method of claim 82, wherein, when the uplink bandwidth is a 320 MHz bandwidth, if the 80 MHz primary frequency segment is an 80 MHz frequency segment and the secondary highest frequency is in the 320 MHz bandwidth, the 80 MHz secondary frequency segment is an 80 MHz frequency segment with the highest frequency in the 320 MHz bandwidth and the 160 MHz secondary frequency segment is a 160 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth, that the first bit and the second bit together indicate an absolute location of the frequency segment in the uplink bandwidth, comprises: if the value of the first bit is 0 and the value of the second bit is 0, the frequency segment is an 80 MHz frequency segment with a secondary highest frequency in the 320 MHz bandwidth; if the value of the first bit is 0 and the value of the second bit is 1, the frequency segment is the 80 MHz frequency segment with the highest frequency in the 320 MHz bandwidth; if the value of the first bit is 1 and the value of the second bit is 0, the frequency segment is the 80 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth; or, if the value of the first bit is 1 and the value of the second bit is 1, the frequency segment is an 80 MHz frequency segment with a secondary lowest frequency in the 320 MHz bandwidth. 86. The method of claim 82, wherein, when the uplink bandwidth is a 320 MHz bandwidth, if the 80 MHz primary frequency segment is the 80 MHz frequency segment with the highest frequency in the 320 MHz bandwidth, the 80 MHz secondary frequency segment is the 80 MHz frequency segment with the secondary highest frequency in the 320 MHz bandwidth, and the 160 MHz secondary frequency segment is the 160 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth, that the first bit and the second bit together indicate an absolute location of the frequency segment in the uplink bandwidth comprises: if the value of the first bit is 0 and the value of the second bit is 0, the frequency segment is the 80 MHz frequency segment with the highest frequency in the 320 MHz bandwidth; if the value of the first bit is 0 and the value of the second bit is 1, the frequency segment is an 80 MHz frequency segment with a secondary highest frequency in the 320 MHz bandwidth; if the value of the first bit is 1 and the value of the second bit is 0, the frequency segment is the 80 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth; or, if the value of the first bit is 1 and the value of the second bit is 1, the frequency segment is an 80 MHz frequency segment with a secondary lowest frequency in the 320 MHz bandwidth. 87. The method of claim 82, wherein the first bit and the second bit together indicate an absolute location of a frequency segment in the uplink bandwidth, comprising: the first bit and the second bit are used to jointly define a value of an absolute frequency indicator parameter, wherein the absolute frequency indicator parameter comprises two bits and the absolute frequency indicator parameter indicates an absolute location of a frequency segment in the uplink bandwidth. 88. The method according to claim 87, wherein, if the value of one bit in the absolute frequency indicator parameter is 0 and the value of the other bit is 0, it indicates that the frequency segment is an 80 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth; if the value of one bit in the absolute frequency indicator parameter is 0 and the value of the other bit is 1, this indicates that the frequency segment is an 80 MHz frequency segment with a secondary lowest frequency in the 320 MHz bandwidth; if the value of one bit in the absolute frequency indicator parameter is 1 and the value of the other bit is 0, this indicates that the frequency segment is an 80 MHz frequency segment with a secondary highest frequency in the 320 MHz bandwidth; or, If the value of one bit in the absolute frequency indicator parameter is 1 and the value of the other bit is 1, this indicates that the frequency segment is an 80 MHz frequency segment with the highest frequency in the 320 MHz bandwidth. 89. The method of claim 88, wherein, when the uplink bandwidth is a 320 MHz bandwidth, if the 80 MHz primary frequency segment is the 80 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth, the 80 MHz secondary frequency segment is the 80 MHz frequency segment with the secondary lowest frequency in the 320 MHz bandwidth, and the 160 MHz secondary frequency segment is the 160 MHz frequency segment with the highest frequency in the 320 MHz bandwidth, that the first bit and the second bit are used to jointly determine the value of the absolute frequency indicator parameter comprises: if the value of the first bit is 0 and the value of the second bit is 0, the value of one bit in the absolute frequency pointer parameter is 0 and the value of the other bit is 0; if the value of the first bit is 0 and the value of the second bit is 1, the value of one bit in the absolute frequency pointer parameter is 0 and the value of the other bit is 1; if the value of the first bit is 1 and the value of the second bit is 0, the value of one bit in the absolute frequency pointer parameter is 1 and the value of the other bit is 0; or, if the value of the first bit is 1 and the value of the second bit is 1, the value of one bit in the absolute frequency pointer parameter is 1 and the value of the other bit is 1. 90. The method of claim 88, wherein, when the uplink bandwidth is a 320 MHz bandwidth, if the 80 MHz primary frequency segment is an 80 MHz frequency segment and the secondary lowest frequency is in the 320 MHz bandwidth, the 80 MHz secondary frequency segment is an 80 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth and the 160 MHz secondary frequency segment is a 160 MHz frequency segment with the highest frequency in the 320 MHz bandwidth, that the first and second bits are used to jointly determine the value of the absolute frequency indicator parameter comprises: if the value of the first bit is 0 and the value of the second bit is 0, the value of one bit in the absolute frequency pointer parameter is 0 and the value of the other bit is 1; if the value of the first bit is 0 and the value of the second bit is 1, the value of one bit in the absolute frequency pointer parameter is 0 and the value of the other bit is 0; if the value of the first bit is 1 and the value of the second bit is 0, the value of one bit in the absolute frequency pointer parameter is 1 and the value of the other bit is 0; or, if the value of the first bit is 1 and the value of the second bit is 1, the value of one bit in the absolute frequency pointer parameter is 1 and the value of the other bit is 1. 91. The method of claim 88, wherein, when the uplink bandwidth is a 320 MHz bandwidth, if the 80 MHz primary frequency segment is an 80 MHz frequency segment and the secondary highest frequency is in the 320 MHz bandwidth, the 80 MHz secondary frequency segment is an 80 MHz frequency segment with the highest frequency in the 320 MHz bandwidth and the 160 MHz secondary frequency segment is a 160 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth, that the first and second bits are used to jointly determine the value of the absolute frequency indicator parameter comprises: if the value of the first bit is 0 and the value of the second bit is 0, the value of one bit in the absolute frequency pointer parameter is 1 and the value of the other bit is 0; if the value of the first bit is 0 and the value of the second bit is 1, the value of one bit in the absolute frequency pointer parameter is 1 and the value of the other bit is 1; if the value of the first bit is 1 and the value of the second bit is 0, the value of one bit in the absolute frequency pointer parameter is 0 and the value of the other bit is 0; or, if the value of the first bit is 1 and the value of the second bit is 1, the value of one bit in the absolute frequency pointer parameter is 0 and the value of the other bit is 1. 92. The method of claim 88, wherein, when the uplink bandwidth is a 320 MHz bandwidth, if the 80 MHz primary frequency segment is the 80 MHz frequency segment with the highest frequency in the 320 MHz bandwidth, the 80 MHz secondary frequency segment is the 80 MHz frequency segment with the secondary highest frequency in the 320 MHz bandwidth, and the 160 MHz secondary frequency segment is the 160 MHz frequency segment with the lowest frequency in the 320 MHz bandwidth, that the first bit and the second bit are used to jointly determine the value of the absolute frequency indicator parameter comprises: if the value of the first bit is 0 and the value of the second bit is 0, the value of one bit in the absolute frequency pointer parameter is 1 and the value of the other bit is 1; if the value of the first bit is 0 and the value of the second bit is 1, the value of one bit in the absolute frequency pointer parameter is 1 and the value of the other bit is 0; if the value of the first bit is 1 and the value of the second bit is 0, the value of one bit in the absolute frequency pointer parameter is 0 and the value of the other bit is 0; or, if the value of the first bit is 1 and the value of the second bit is 1, the value of one bit in the absolute frequency pointer parameter is 0 and the value of the other bit is 1. 93. A communication method in which the method comprises: generating, by the access point, a downlink PPDU, wherein the downlink PPDU comprises a multi-user downlink PPDU, the multi-user downlink PPDU comprises an OFDMA PPDU or a MU-MIMO PPDU, the downlink PPDU comprises a MAC frame corresponding to one or more first stations, the MAC frame corresponding to the first station comprises a TRS control field, the TRS control field comprises a control information field, the control information field comprises a resource block allocation subfield, and the resource block allocation subfield is used to allocate a resource block used by the first station; and sending, via the AP, downlink PPDUs. 94. The method according to claim 93, wherein the resource block allocation subfield occupies eight bits in the control information field. 95. The method of claim 94, wherein all or part of the frequency domain resource specified in the resource block allocation subfield is located on a 160 MHz channel for transmitting a MAC frame that carries the resource allocation field in the TRS control field. 96. The method of claim 93, wherein the resource block allocation subfield occupies nine bits in the control information field. 97. The method according to claim 96, wherein the resource block allocation subfield occupies from bit B5 to bit B12 and bit B25 in the control information field. 98. The method of claim 93, wherein the control information field further comprises a UL data symbol field, a resource block allocation subfield, an AP uplink TX power field, a UL target RSSI field, and a UL MCS field. 99. A communication method in which the method comprises: receiving a downlink PPDU, wherein the downlink PPDU comprises a downlink multi-user PPDU, the downlink multi-user PPDU comprises an OFDMA PPDU or a MU-MIMO PPDU, the downlink PPDU comprises a MAC frame corresponding to one or more first stations, the MAC frame corresponding to the first station comprises a TRS control field, the TRS control field comprises a control information field, the control information field comprises a resource block allocation subfield, and the resource block allocation subfield is used to allocate a resource block used by the first station; and downlink PPDU parsing. 100. The method according to claim 99, wherein the resource block allocation subfield occupies eight bits in the control information field. 101. The method of claim 100, wherein all or part of the frequency domain resource specified in the resource block allocation subfield is located on a 160 MHz channel for transmitting a MAC frame that carries the resource allocation field in the TRS control field. 102. The method according to claim 99, wherein the resource block allocation subfield occupies nine bits in the control information field. 103. The method according to claim 102, wherein the resource block allocation subfield occupies from bit B5 to bit B12 and bit B25 in the control information field. 104. The method of claim 99, wherein the control information field further comprises a UL data symbol field, a resource block allocation subfield, an AP uplink TX power field, a UL target RSSI field, and a UL MCS field. 105. The method according to any one of paragraphs 71-92, wherein the first bit occupies bit B39 in the user information field. 106. The method according to any one of paragraphs 71-92, in which the second bit occupies bit B0 in the resource block allocation subfield of the user information field. 107. A communication device capable of implementing the method according to any one of paragraphs 1-106. 108. A machine-readable data recording medium on which a program is recorded, wherein the program, when executed, enables a computer to perform the method according to any one of paragraphs 1-106.