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WO2016187854A1 - Procédé de communication , point d'accès, et station - Google Patents

Procédé de communication , point d'accès, et station Download PDF

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Publication number
WO2016187854A1
WO2016187854A1 PCT/CN2015/079997 CN2015079997W WO2016187854A1 WO 2016187854 A1 WO2016187854 A1 WO 2016187854A1 CN 2015079997 W CN2015079997 W CN 2015079997W WO 2016187854 A1 WO2016187854 A1 WO 2016187854A1
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WIPO (PCT)
Prior art keywords
information
indication
unit
channel
sta
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PCT/CN2015/079997
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English (en)
Chinese (zh)
Inventor
刘乐
庞继勇
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2015/079997 priority Critical patent/WO2016187854A1/fr
Publication of WO2016187854A1 publication Critical patent/WO2016187854A1/fr
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • Embodiments of the present invention relate to the field of communications, and, more particularly, to a communication method, an access point, and a station.
  • Orthogonal Frequency Division Multiple Access OFDM
  • OFDMA Orthogonal Frequency Division Multiple Access
  • OFDMA technology supports multiple nodes to simultaneously send and receive data.
  • an access point AP
  • STA station
  • resource allocation is performed based on a resource block (RB) or an RB group; different channel resources are allocated to different STAs at the same time.
  • RB resource block
  • next-generation WLAN system such as High Efficiency WLAN (HEW)
  • HEW High Efficiency WLAN
  • OFDMA technology after the introduction of OFDMA technology, the uplink data transmission will no longer be single-point to single-point transmission, but multi-point to single-point transmission, and downlink. Data transmission will also become a point-to-multipoint transmission.
  • HEW High Efficiency WLAN
  • the downlink presentation layer protocol data unit (PPDU) for transmitting the resource allocation instruction information in the HEW system includes a legacy signaling field (Legicate Signal Field, L-SIG) and a signaling indication part of the high efficiency packet.
  • L-SIG legacy Signal Field
  • A HE-SIG-A
  • HE-SIG-B High Efficiency Packet Signaling Indicator Part B
  • Legacy-preamble includes traditional short training sequence domain, traditional long training sequence domain and traditional signaling domain
  • HE- SIG-A includes bandwidth (Bandwidth, BW), Guard Interval (GI), and common signaling of HE-SIG-B length and modulation coding
  • HE-SIG-B is used to indicate the user's Information related to resource allocation.
  • the existing scheme is HE-SIG-B (Resource Allocation Information) joint coding detection (Joint Coding/CRC) for each user or user group on multiple channels, in each unit channel
  • the transmission is repeated on (for example, a 20 MHz channel) or transmitted over the full bandwidth of the working bandwidth.
  • the above methods all send HE-SIG-B according to preset rules, and the sending method is not flexible. As a result, no matter which transmission method is selected, or a large overhead is used to ensure robustness, or robustness is sacrificed in order to save overhead, when the channel is interfered, the HE-SIG-B on the channel The reception of information will be affected.
  • the embodiments of the present invention provide a communication method, an access point, and a station, which can flexibly transmit HE-SIG-B, improve robustness, and have low system overhead.
  • a communication method in which an access point AP and a at least one station STA in a wireless local area network WLAN are configured to communicate on a working bandwidth, the method being performed by the AP, including:
  • the AP sends the indication information common to the scheduled users on the primary unit channel used by the working bandwidth, where the indication information is used to indicate a manner of sending the specific n pieces of sub-information of the scheduled users on the working bandwidth, Where n is a positive integer;
  • the AP sends the n sub-information on a unit channel used by the working bandwidth according to the sending manner.
  • the AP sends the indication information that is public to the scheduled user on the primary unit channel that is used by the working bandwidth, including:
  • the AP carries the n sub-information in the second part of the HE-SIG-B, and sends the unit information on the unit channel used by the working bandwidth according to the sending manner.
  • the method further includes:
  • the AP carries the indication information in a first part of the HE-SIG-B and transmits on at least one non-primary unit channel used by the working bandwidth.
  • the AP sends the indication information that is common to the scheduled user on the primary unit channel used by the working bandwidth, including:
  • the AP carries the indication information to the signaling indication part of the high efficiency packet A HE-SIG-A And transmitting repeatedly on each unit channel including the primary unit channel used by the working bandwidth.
  • the sending manner includes: And carrying a location of at least one unit channel corresponding to each of the n pieces of sub-information.
  • the indication information includes a bit identifier
  • the AP uses the working bandwidth according to the sending manner. Transmitting the n sub-informations on the unit channel, including:
  • the indication information includes resource allocation information, where the resource allocation information indicates that the AP is Transmitting, by the STA, at least one unit channel for transmitting data, where the AP sends the n sub-informments on the unit channel used by the working bandwidth according to the sending manner, including:
  • the AP further sends the first sub-information corresponding to the STA on at least one idle unit channel that is used as the working bandwidth but does not send data.
  • the indication information further includes: a unit in which the bandwidth of the scheduled user is greater than or equal to a unit of the resource allocation unit of the unit channel The location of the channel, and the bandwidth of the channel are smaller than the unit channel location where the resource allocation unit of the unit channel is located, and the resource allocation information includes the allocation information of the resource allocation unit whose bandwidth is greater than the unit channel.
  • the at least one unit channel includes the main Unit channel.
  • the sending manner further includes: a repetition manner of each of the n sub-information information.
  • the repeating manner when the at least one unit channel includes at least two consecutive unit channels, the repeating manner includes:
  • the transmission is repeated in accordance with the code.
  • the repeating manner when the at least one unit channel includes at least two non-contiguous unit channels, the repeating manner includes :
  • the coding is repeated.
  • the indication information And including a first indication of the unit channel for indicating that the working bandwidth is not used, so as to indicate that the STA does not perform reception on the unit channel that is not used by the working bandwidth according to the first indication.
  • the working bandwidth All of the unit channels used are continuously distributed or discontinuously distributed over the operating bandwidth.
  • the method further include:
  • a fourth indication indicating at least one time period of the uplink and/or downlink data packet to the STA, where the fourth indication is carried in the HE-SIG-A;
  • a fifth indication indicating at least one of a length of the at least one time period, a long training field HE-LTF length indication of a high efficiency packet, an HE-LTF compression indication, and a multi-channel resource indication
  • the fifth indication is carried in the first part of the HE-SIG-B.
  • the method also includes:
  • the AP jointly encodes each of the n sub-information information
  • the AP instructs the STA to perform a joint cyclic redundancy check CRC or perform an independent CRC on each of the n pieces of sub-information.
  • the method further include:
  • the AP independently encodes each sub-information of the n sub-information
  • the AP instructs the STA to perform an independent CRC on each of the n pieces of sub-information.
  • an access point AP and at least one station STA in a wireless local area network WLAN to which the method is applied are configured to communicate on a working bandwidth, the method being performed by one of the STAs, including:
  • the STA receives, according to the indication information, m pieces of sub-information sent by the AP according to the manner corresponding to the sending manner, where m is a positive integer less than or equal to n.
  • the receiving, by the STA, the indication information of the scheduled user that is sent by the AP, on the primary unit channel that is used by the working bandwidth includes:
  • the STA Receiving, by the STA, the first part of the signaling indication part B HE-SIG-B of the high efficiency packet sent by the AP, on the primary unit channel used by the working bandwidth, where the HE-SIG-B
  • the indication information is included in a part.
  • the method further includes:
  • the STA receives the first portion of the HE-SIG-B on at least one non-primary unit channel used by the working bandwidth.
  • the receiving, by the STA, the indication information of the scheduled user that is sent by the AP, on the primary unit channel that is used by the working bandwidth includes:
  • the STA repeatedly receives a signaling indication part A HE-SIG-A of the high efficiency packet on each unit channel including the primary unit channel used by the working bandwidth, where the HE-SIG-A includes The indication information.
  • the sending manner includes: And carrying a location of at least one unit channel corresponding to each of the n pieces of sub-information.
  • the indication information includes a bit identifier, and the STA according to the indication information, according to the sending manner Receiving, in a corresponding manner, the m sub-messages sent by the AP, including:
  • the STA Receiving, by the STA, the m pieces of sub-information, where the AP and the STA are on the at least one unit channel corresponding to the m sub-information determined by the bit identifier and the mapping relationship between the bit identifier and the transmission channel.
  • the mapping relationship is pre-configured.
  • the indication information includes resource allocation information, and the resource allocation information indicates that the AP is The STA allocates at least one unit channel for transmitting data, and the STA receives the m pieces of sub-information sent by the AP according to the indication information according to the indication information, including:
  • the STA receives the m sub-informations on at least one unit channel allocated by the AP for transmitting data;
  • the STA also receives the m sub-informations on at least one idle unit channel that uses the working bandwidth but does not transmit data.
  • the indication information further includes: a unit where the bandwidth of the scheduled user is greater than or equal to a unit of the resource allocation unit of the unit channel The location of the channel, and the bandwidth of the channel are smaller than the unit channel location where the resource allocation unit of the unit channel is located, and the resource allocation information includes the allocation information of the resource allocation unit whose bandwidth is greater than the unit channel.
  • the at least one unit channel includes the main Unit channel.
  • the sending manner further includes: a repetition manner of each of the n sub-informations.
  • the repeating manner when the at least one unit channel includes at least two consecutive unit channels, the repeating manner includes:
  • the transmission is repeated in accordance with the code.
  • the repeating manner when the at least one unit channel includes at least two non-contiguous unit channels, the repeating manner includes :
  • the transmission is repeated in accordance with the code.
  • the indication information A first indication for indicating a unit channel that is not used by the working bandwidth, the method further comprising:
  • the STA does not perform reception on the unit channel that is not used by the working bandwidth according to the first indication.
  • the working bandwidth All of the unit channels used are continuously distributed or discontinuously distributed over the operating bandwidth.
  • the method further include:
  • a fourth indication that is sent by the AP to indicate at least one time period of the uplink and/or downlink data packet, where the fourth indication is carried in the HE-SIG-A;
  • a fifth indicating, by the AP, a length of the at least one time period, a long training field HE-LTF length indication of a high efficiency packet, an HE-LTF compression indication, and a multi-channel resource indication Instructing that the fifth indication is carried in the first portion of the HE-SIG-B.
  • the method further includes:
  • the STA performs a joint cyclic redundancy check CRC or performs an independent CRC on the received m pieces of sub-information according to the sixth indication.
  • an access point AP belongs to a wireless local area network (WLAN), and the WLAN further includes at least one station STA, where the AP and the at least one STA communicate on a working bandwidth,
  • the AP includes:
  • a first sending module configured to send indication information common to the scheduled users on the primary unit channel used by the working bandwidth, where the indication information is used to indicate a dedicated n sub-information of the scheduled user on the working bandwidth
  • the transmission method where n is a positive integer
  • a second sending module configured to send the n sub-informations on a unit channel used by the working bandwidth according to the sending manner.
  • the first sending module is specifically configured to:
  • the second sending module is specifically configured to:
  • n sub-information is carried in the second part of the HE-SIG-B, and is transmitted on the unit channel used by the working bandwidth according to the sending manner.
  • the AP further includes:
  • a third sending module configured to carry the indication information in the first part of the HE-SIG-B, and send the at least one non-primary unit channel used by the working bandwidth.
  • the first sending module is specifically configured to:
  • the indication information is carried in the signaling indication part A HE-SIG-A of the high efficiency packet, and is repeatedly transmitted on each unit channel including the primary unit channel used by the working bandwidth.
  • the sending manner includes: carrying a location of at least one unit channel corresponding to each of the n pieces of sub-information.
  • the indication information includes a bit identifier
  • the second sending module is specifically configured to:
  • the indication information includes resource allocation information, where the resource allocation information indicates that the AP is Describe at least one unit channel allocated by the STA for transmitting data, where the second sending module is specifically configured to:
  • the first sub-information corresponding to the STA is also sent on at least one idle unit channel that is used as the working bandwidth but does not transmit data.
  • the indication information further includes that the bandwidth of the scheduled user is greater than or equal to the unit of the resource allocation unit of the unit channel.
  • the location of the channel, and the bandwidth of the channel are smaller than the unit channel location where the resource allocation unit of the unit channel is located, and the resource allocation information includes the allocation information of the resource allocation unit whose bandwidth is greater than the unit channel.
  • the at least one unit channel includes the main Unit channel.
  • the sending manner further includes: The repetition of each sub-information in the sub-information.
  • the repeating manner when the at least one unit channel includes at least two consecutive unit channels, the repeating manner includes:
  • the transmission is repeated in accordance with the code.
  • the repeating manner when the at least one unit channel includes at least two non-contiguous unit channels, the repeating manner includes :
  • the coding is repeated.
  • the indication information And including a first indication of the unit channel for indicating that the working bandwidth is not used, so as to indicate that the STA does not perform reception on the unit channel that is not used by the working bandwidth according to the first indication.
  • the working bandwidth All of the unit channels used are continuously distributed or discontinuously distributed over the operating bandwidth.
  • the AP is further include:
  • a fourth sending module configured to send, to the STA, a fourth indication indicating at least one time period of the uplink and/or downlink data packet, where the fourth indication is carried in the HE-SIG-A;
  • a fifth sending module configured to send, to the STA, at least one of a length indicating the length of the at least one time period, a long training field HE-LTF length indication of a high efficiency packet, an HE-LTF compression indication, and a multi-channel resource indication A fifth indication, the fifth indication being carried in the first part of the HE-SIG-B.
  • the AP also includes:
  • a first encoding module configured to jointly encode each of the n sub-information
  • an indication information module configured to instruct the STA to perform a joint cyclic redundancy check CRC or perform an independent CRC on each of the n pieces of sub-information.
  • the second coding module is configured to independently code each sub-information of the n sub-information
  • a second indication module configured to instruct the STA to perform independent CRC on each sub-information of the n sub-information.
  • a STA belongs to a wireless local area network (WLAN), the WLAN includes an access point AP, and at least one station STA including the STA, the AP and the at least one STA are working. Communicating over the bandwidth, the STA includes:
  • a first receiving module configured to receive indication information common to the scheduled users sent by the AP, on the primary unit channel used by the working bandwidth, where the indication information is used to indicate that the AP sends the working bandwidth The manner of transmitting the specific n pieces of sub-information of the scheduled user, where n is a positive integer;
  • the second receiving module is configured to receive, according to the indication information, m pieces of sub-information sent by the AP according to the manner corresponding to the sending manner, where m is a positive integer less than or equal to n.
  • the first receiving module is specifically configured to:
  • the STA further includes:
  • a third receiving module configured to receive the first part of the HE-SIG-B on the at least one non-primary unit channel used by the working bandwidth.
  • the first receiving module is specifically configured to:
  • a signaling indication portion A HE-SIG-A that repeatedly receives the high efficiency packet on each unit channel including the primary unit channel used by the working bandwidth, wherein the indication is included in the HE-SIG-A information.
  • the sending manner includes: And carrying a location of at least one unit channel corresponding to each of the n pieces of sub-information.
  • the indication information includes a bit identifier
  • the second receiving module is specifically configured to:
  • the indication information includes resource allocation information, where the resource allocation information indicates that the AP is Describe at least one unit channel allocated by the STA for transmitting data, where the second receiving module is specifically configured to:
  • the m pieces of sub-information are also received on at least one idle unit channel that is used by the working bandwidth but does not transmit data.
  • the indication information further includes: a unit in which the bandwidth of the scheduled user is greater than or equal to a unit of the resource allocation unit of the unit channel The location of the channel, and the bandwidth of the channel are smaller than the unit channel location where the resource allocation unit of the unit channel is located, and the resource allocation information includes the allocation information of the resource allocation unit whose bandwidth is greater than the unit channel.
  • the at least one unit channel includes the main Unit channel.
  • the sending manner further includes: The repetition of each sub-information in the sub-information.
  • the repeating manner when the at least one unit channel includes at least two consecutive unit channels, the repeating manner includes:
  • the transmission is repeated in accordance with the code.
  • the repeating manner when the at least one unit channel includes at least two non-contiguous unit channels, the repeating manner includes:
  • the transmission is repeated in accordance with the code.
  • the indication information The first indication of the unit channel for indicating that the working bandwidth is not used, the STA further includes:
  • a processing module configured to: not receive, on the unit channel that is not used by the working bandwidth according to the first indication.
  • the working bandwidth All of the unit channels used are continuously distributed or discontinuously distributed over the operating bandwidth.
  • the STA is further include:
  • a fourth receiving module configured to receive, by the AP, a fourth indication indicating at least one time period of the uplink and/or downlink data packet, where the fourth indication is carried in the HE-SIG-A;
  • a fifth receiving module configured to receive, by the AP, at least one of a length of the at least one time period, a long training field HE-LTF length indication of a high efficiency packet, an HE-LTF compression indication, and a multi-channel resource indication A fifth indication of the fifth indication carried in the first part of the HE-SIG-B.
  • the STA is further include:
  • a sixth receiving module configured to receive a sixth indication sent by the AP, where the sixth indication is used to indicate an encoding mode
  • a checking module configured to perform a joint cyclic redundancy check CRC or perform an independent CRC on the received m pieces of information according to the sixth indication.
  • the communication method, the access point, and the station in the embodiment of the present invention transmit the indication information common to the scheduled users on the primary unit channel used by the working bandwidth to indicate that the communication is adjusted.
  • the transmission mode of the user-specific information on the working bandwidth, the AP and the STA respectively transmit and receive according to the foregoing transmission manner can ensure the robustness of the user-specific information, reduce the system signaling overhead, and improve the system efficiency.
  • FIG. 1 is a schematic diagram of a transmission mode of a conventional WLAN system.
  • FIG. 2 is a schematic diagram of a transmission mode of a next generation WLAN system.
  • FIG. 3 is a schematic diagram of a physical layer frame format of a PPDU.
  • FIG. 4 is a schematic diagram of a transmission method of HE-SIG-B.
  • FIG. 5 is a schematic diagram of another HE-SIG-B transmission method.
  • Fig. 6 is a schematic diagram showing still another transmission mode of HE-SIG-B.
  • FIG. 7 is a schematic flowchart of a communication method according to an embodiment of the present invention.
  • FIG. 8A is a schematic diagram of a transmission manner of HE-SIG-B according to an embodiment of the present invention.
  • FIG. 8B is a schematic diagram of a transmission manner of HE-SIG-B according to another embodiment of the present invention.
  • FIG. 8C is a schematic diagram of a transmission manner of HE-SIG-B according to still another embodiment of the present invention.
  • FIG. 9A is a schematic diagram of a transmission manner of HE-SIG-B according to still another embodiment of the present invention.
  • FIG. 9B is a schematic diagram of a transmission manner of HE-SIG-B according to still another embodiment of the present invention.
  • 9C is a schematic diagram of a transmission manner of HE-SIG-B according to still another embodiment of the present invention.
  • FIG. 10A is a schematic diagram of a transmission manner of HE-SIG-B according to still another embodiment of the present invention.
  • FIG. 10B is a schematic diagram of a transmission manner of HE-SIG-B according to still another embodiment of the present invention.
  • FIG. 11 is a schematic flow chart of a communication method according to another embodiment of the present invention.
  • Figure 12 is a schematic block diagram of an access point in accordance with one embodiment of the present invention.
  • Figure 13 is a schematic block diagram of a station in accordance with one embodiment of the present invention.
  • FIG. 14 is a schematic block diagram of an access point in accordance with another embodiment of the present invention.
  • Figure 15 is a schematic block diagram of a station in accordance with another embodiment of the present invention.
  • WLAN has become one of the mainstream mobile broadband access technologies due to its high speed and low cost advantages.
  • the next-generation IEEE 802.11ax standard further adopts OFDMA technology based on the existing OFDM technology.
  • the OFDMA technique divides the air interface time-frequency resources of the air interface into a plurality of orthogonal RBs, and the RBs may be common in the time domain and orthogonal in the frequency domain.
  • OFDMA technology supports multiple nodes to simultaneously send and receive data.
  • the resource allocation is performed based on the RB or the RB group; different channel resources are allocated to different STAs at the same time, so that multiple STAs access the channel efficiently, thereby improving channel utilization.
  • the uplink data transmission is a single point to single point transmission, as shown in Figure 1, that is, at the same time, the same channel (or the same spectrum), only one STA transmits data to the AP; downlink data transmission is also a single point For single-point transmission, that is, at the same time, the same channel (or the same spectrum), the AP only transmits data to one STA.
  • next-generation WLAN such as HEW
  • the uplink data transmission will no longer be a single-point to single-point transmission, but a multi-point to single-point transmission, as shown in Figure 2, that is, at the same time.
  • the same channel (or the same spectrum) there are multiple STAs transmitting data to the AP at the same time; the downlink data transmission is no longer a single-point to single-point transmission, but a single-point to multi-point transmission, that is, at the same time,
  • the AP transmits data to multiple STAs simultaneously. Therefore, designing an efficient method for indicating resource allocation to cope with multi-point to single-point transmission and single-point to multi-point transmission in HEW system is an urgent technical problem to be solved.
  • the PPDU for transmitting the resource allocation instruction information in the 802.11ax system can guarantee the traditional The compatibility of the transmission frame format in the WLAN system, the physical layer frame format of the transmission frame is shown in FIG. 3, and the traditional leading part Legacy-preamble is used for automatic detection of repeated L-SIG, HE-SIG-A and HE-SIG. -B, where Legacy-preamble includes traditional short training sequence domain, traditional long training sequence domain and traditional signaling domain; HE-SIG-A includes common settings of BW, GI, and HE-SIG-B length and modulation coding Signaling; HE-SIG-B is used to indicate related information such as user resource allocation. Legacy-preamble and HE-SIG-A need to be sent repeatedly at 20MHz.
  • HE-SIG-B is variable length, but the length on each channel needs to be aligned before the High Efficiency Short Training Field (HE-STF) of the high efficiency packet.
  • HE-STF High Efficiency Short Training Field
  • the AP needs to send to multiple users, and each user may only be allocated a part of the frequency resource unit (RU) in the OFDMA band.
  • the entire channel includes a plurality of unit channels (or 20 MHz channels), and the RUs may be a group of subcarriers within 20 MHz, or may include some or all of the plurality of 20 MHz channels.
  • HE-SIG-B Resource Allocation Information
  • Joint Coding/CRC Joint Coding/CRC
  • the user can detect its own resource allocation information on the primary channel, and can also use the information received on the non-primary channel to perform Maximum Ratio Combing (MRC) and receive the diversity, thereby improving the receiving performance.
  • MRC Maximum Ratio Combing
  • the 80 MHz bandwidth includes four 20 MHz channels, and the HE-SIG-B information is repeatedly transmitted four times on four unit channels, which is high in robustness but too expensive.
  • HE-SIG-B Resource Allocation Information
  • Joint Coding/CRC Joint Coding/CRC
  • Another possible solution is to use the resource allocation information of each user on the channel or the user group to separately encode and detect (Individual Coding/CRC), and each sub-information included in the HE-SIG-B is transmitted on the respective channel. Users can detect their own resource allocation information on the channel where they allocate resources.
  • the sub-information of HE-SIG-B on each unit channel (20 MHz channel) is taken as an example of HE-SIG-B sub-information a, HE-SIG-B.
  • the sub-information b, the sub-information c of HE-SIG-B and the sub-information d of HE-SIG-B are not repeated.
  • HE-SIG-B Because the sub-information of HE-SIG-B of each channel needs time alignment, HE-SIG-B The overhead is determined by the largest of the four channels of sub-information, while the channel with a smaller sub-information needs to send a long or short useless information to make up the difference. This will cause a waste of resources to some extent, and when a channel is interfered, the reception of the sub-information of HE-SIG-B on the channel will be affected.
  • the above methods all send HE-SIG-B according to preset rules, and the sending method is not flexible. As a result, no matter which transmission method is selected, or a large overhead is used to ensure robustness, or robustness is sacrificed in order to save overhead, when the channel is interfered, the HE-SIG-B on the channel The reception of information will be affected.
  • Figure 7 illustrates a communication method 100 in accordance with one embodiment of the present invention.
  • the method 100 is performed by the AP, including:
  • the AP sends the indication information common to the scheduled user on the primary unit channel used by the working bandwidth, where the indication information is used to indicate a manner of sending the specific n pieces of sub-information of the scheduled user on the working bandwidth, where n is a positive integer;
  • the AP sends the n sub-information on a unit channel used by the working bandwidth according to the sending manner.
  • the foregoing sending manner includes at least: a location of at least one unit channel that carries each of the n pieces of sub-information;
  • the at least one unit channel is a plurality of unit channels.
  • each sub-information may be repeatedly transmitted on the plurality of unit channels by default.
  • the associated communication protocol may dictate the manner in which the transmission is repeated.
  • the foregoing sending manner further includes: a repetition manner of each of the n sub-information. Compared with the above-mentioned default repeated transmission mode, different repetition modes can be further selected according to requirements, which is more flexible.
  • the communication method of the embodiment of the present invention transmits the indication information common to the scheduled users on the primary unit channel used by the working bandwidth to indicate the transmission manner of the dedicated information of the scheduled user on the working bandwidth, and the AP and the STA respectively According to the foregoing transmission mode sending and receiving, the robustness of the user-specific information can be ensured, and the system signaling overhead can be reduced, and the system efficiency can be improved.
  • the embodiment of the present invention separately sends the public information of the scheduled user and the dedicated information of the scheduled user, and includes an indication information in the public information of the scheduled user to indicate that the user is scheduled on the working bandwidth. How to send private information.
  • Separate between users or user groups There are respective information that is not common to other users, and thus the dedicated information of the scheduled user may include a plurality of sub-information, and the embodiment of the present invention assumes n, and n is a positive integer.
  • the AP determines the transmission mode of the dedicated information for transmitting the scheduled user, and transmits n sub-information on the working bandwidth according to the transmission mode. Moreover, the AP notifies the STA of its transmission mode, and the STA performs the reception according to the corresponding manner, so that the AP and the STA can efficiently and reliably transmit the dedicated information of the scheduled user.
  • the S110 sends the indication information common to the scheduled user on the primary unit channel used by the working bandwidth, including: the AP carries the indication information to the signaling of the high efficiency packet.
  • the first part of the indication part B HE-SIG-B is sent on the main unit channel used by the working bandwidth; and the S120 sends the n sub-information on the unit channel used by the working bandwidth according to the transmission mode, including:
  • the AP carries the n sub-information in the second part of the HE-SIG-B, and transmits the unit information on the unit channel used by the working bandwidth according to the transmission mode.
  • the embodiment of the present invention may divide the HE-SIG-B into two parts, and the first part is used for scheduling user common information, and may include related settings of the HE-LTF (for example, a long training field of the high efficiency package (High Efficiency) Long Training Field (HE-LTF) symbol length, number of symbols, etc.), Guard Interval (GI) of the data part, and resource allocation information of the data part (for example, number of resource allocations, allocation of users) Number and resource block allocation method, etc.).
  • the second part is for carrying the dedicated information of the scheduled user, and the dedicated information of the scheduled user may include n sub-information.
  • the public information of the scheduled users in the first part of HE-SIG-B is transmitted on at least the primary unit channel.
  • the second part of the HE-SIG-B is transmitted according to the transmission manner in the indication information, and does not need to be completely repeated, and transmitting the partial information in parallel can reduce the signaling overhead.
  • the method 100 further includes: the AP carrying the indication information in the first part of the HE-SIG-B, and transmitting on the at least one non-primary unit channel used by the working bandwidth.
  • transmission on the primary unit channel and the at least one non-primary unit channel may enhance robustness.
  • the AP may repeatedly send the indication information on the primary unit channel and the at least one non-primary unit channel, which may be repeated according to a unit channel repetition, a symbol repetition, or a modulation and coding scheme at a lower rate than when the transmission is not repeated.
  • the embodiment of the present invention does not limit this.
  • the AP sends the indication information common to the scheduled user on the primary unit channel used by the working bandwidth, including: the signaling indication that the AP carries the indication information to the high efficiency packet.
  • the transmission is repeated on each unit channel including the primary unit channel used by the working bandwidth.
  • the existing HE-SIG-A is repeatedly transmitted on each unit channel used for the working bandwidth.
  • Carrying the indication information in the HE-SIG-A and repeating transmission on each unit channel the robustness can ensure that the scheduling user can receive on each unit channel in the bandwidth, and the HE-SIG-B second part Without repeating completely, transmitting part of the information in parallel can reduce signaling overhead.
  • the repetition manner may be repeated according to unit channel repetition, symbol repetition or a modulation and coding scheme with a lower rate than when transmission is not repeated. This embodiment of the present invention does not limit this.
  • the indication information (for example, a bit) indicating the transmission mode of the second part of the HE-SIG-B in the embodiment of the present invention may be carried in the first part of the HE-SIG-B, or may be in the HE-SIG.
  • -A carry.
  • the HE-SIG-B is designed for scheduling users.
  • the first part of the HE-SIG-B is the public information of the scheduling user, and can carry the data resource allocation information of the scheduled user and the first indication of the HE-SIG-B.
  • the indication information of the two parts of the transmission method is sent together.
  • HE-SIG-A includes public information of all scheduled users and non-scheduled users, including bandwidth, symbol interval, reservation time and other information, HE-SIG-B length and modulation and coding scheme (MCS).
  • MCS modulation and coding scheme
  • the common information of all users in HE-SIG-A is repeated every 20 MHz channel in the specified bandwidth, and the public information of the scheduled users in the first part of HE-SIG-B is sent on at least the main unit channel, part of or All information may be sent repeatedly on other non-primary unit channels, or may not be sent repeatedly.
  • the user public is common to a plurality of users, or a plurality of user groups or user groups are common, which is not limited by the embodiment of the present invention. It should also be understood that all of the unit channels used by the operating bandwidth are continuously or non-continuously distributed over the operating bandwidth.
  • the communication method of the embodiment of the present invention transmits the indication information common to the scheduled users on the primary unit channel used by the working bandwidth to indicate the transmission manner of the dedicated information of the scheduled user on the working bandwidth, and the AP and the STA respectively
  • the dedicated information of the scheduled user can be flexibly transmitted, the robustness of the user-specific information can be ensured, and the system signaling overhead can be reduced, thereby improving system efficiency.
  • the sending manner includes: carrying a location of at least one unit channel corresponding to each of the n pieces of sub-information.
  • the HE-SIG-A is repeatedly transmitted on each 20 MHz channel, and the first part of the HE-SIG-B may also be on the primary unit channel or include multiple channels of the primary unit channel.
  • the multiple unit channels can be agreed by the AP and the STA, It may also be that the STA is notified after the AP determines, and each sub-information in the second part is sent on one or more 20 MHz channels where the resources allocated by the respective users are located, which is consistent with the sending manner in the indication information.
  • the indication information may include at least one unit channel for indicating that the AP transmits each of the n pieces of sub-information.
  • the STA may be sent in a preset manner on the corresponding channel indicated by the indication information.
  • the repeated mode indication sent by the AP may also be received, and the transmission is repeated according to the indication, which is not limited by the embodiment of the present invention.
  • the indication information includes a bit identifier
  • the AP sends the n sub-information on the unit channel used by the working bandwidth according to the sending manner, including:
  • the indication information indicating the transmission mode of the dedicated sub-information of the scheduled user may be transmitted in an explicit manner.
  • the indication information is a bit identification including at least one bit.
  • the mapping relationship between the bit identifier and the sending channel is stored on the AP side and the STA side, that is, the mapping relationship is common between the AP and the STA, and the mapping relationship may be stored in the form of a table, a matrix, or an array. The embodiment does not limit this.
  • the STA determines, according to the bit identifier, and the mapping relationship between the bit identifier and the transmission channel, the AP sends at least one unit channel corresponding to each of the user-specific sub-information information.
  • the indication information includes resource allocation information
  • the resource allocation information indicates that the AP is at least one unit channel allocated by the STA for transmitting data
  • S120 sends the AP according to the sending.
  • the method of transmitting the n sub-information on the unit channel used by the working bandwidth includes: sending, by the AP, the first sub-information corresponding to the STA on the at least one unit channel allocated for sending the data by the AP; The first sub-information corresponding to the STA is sent on at least one idle unit channel that is used as the working bandwidth but does not need to transmit data.
  • the indication information indicating the transmission manner of the dedicated sub-information of the scheduled user may be transmitted in an implicit manner.
  • the resource allocation information in the user common information of the first part of the HE-SIG-B may implicitly indicate at least one unit channel transmitting the dedicated sub-information of the scheduled user.
  • the second part of the HE-SIG-B indicated by the resource allocation information may be sent in the following manner: on the 4 channels of the working bandwidth of 80 MHz, the channel 1 does not repeatedly transmit the sub-information of the second part a
  • the sub-information a corresponds to the user allocation information on the channel 1;
  • the channel 2 does not repeatedly transmit the sub-information b of the second part, the sub-information b corresponds to the user allocation information on the channel 2;
  • the channel 2 and the channel 4 repeatedly transmit the second part
  • Sub-information c, sub-information c corresponds to user allocation information on channel 3 and channel 4 (see, for example, FIG. 8A, FIG. 8B, or FIG. 8C).
  • the sub-information c is repeatedly transmitted, and the repetition mode can be repeatedly transmitted every 20 MHz channel in frequency (see FIG. 8A), and can be repeatedly transmitted in time according to symbols (see FIG. 8B), or can be repeatedly transmitted in accordance with the code (see FIG. 8C).
  • the sub-information c of the second part of HE-SIG-B is a repeating portion, which is halved compared to the rate of non-repeating sub-information.
  • the modulation coding mode is halved, and the coding rate may be unchanged, the modulation order is reduced by 1, or the modulation order may be unchanged, and the coding rate is reduced.
  • the sub-information a and the sub-information b of the second part of HE-SIG-B of channel 1 and channel 2 are not repeated, and are transmitted by Modulation and Coding Scheme (MCS) 1, and channel 3 and channel 4 are two.
  • MCS Modulation and Coding Scheme
  • the sub-information c of the second part of HE-SIG-B transmitted on the 20 MHz channel is transmitted by MCS0.
  • the repetitive manner is specifically adopted by the AP and the STA, and may be notified by the AP. The embodiment of the present invention does not limit this.
  • the sending manner further includes: a repetition manner of each of the n pieces of sub-information.
  • This repetition mode can be transmitted by one or more bits in the indication information.
  • At least one unit channel corresponding to each sub-information may be a main channel, or a main channel and at least one non-primary channel (also referred to as a sub-channel), or a channel corresponding to a user of resource allocation in the sub-information, etc. This is not limited.
  • the repeating manner includes:
  • the transmission is repeated in accordance with the code.
  • the repeating manner includes:
  • the transmission is repeated in accordance with the code.
  • the indication information occupies a plurality of unit channels, for example, occupying a plurality of 20 MHz continuous channels
  • the indication information is repeatedly transmitted on the corresponding plurality of 20 MHz continuous channels.
  • the repetition mode may be repeated every 20 MHz channel in frequency, may be repeated in time according to symbols, or may be repeatedly transmitted in accordance with the code. If the plurality of unit channels occupied are not continuous channels, the repetition mode may be repeated every 20 MHz channel in frequency, or may be repeatedly transmitted according to symbols.
  • the transmission is repeated in accordance with the code, and is transmitted in a modulation and coding scheme with a lower rate than when the transmission is not repeated. The above two cases are respectively described in the specific embodiments below.
  • the indication information includes a first indication of a unit channel for indicating that the working bandwidth is not used, so as to indicate that the STA is not used in the working bandwidth according to the first indication. No reception is performed on the channel.
  • the channel is arbitrarily selected in the operating bandwidth
  • a case where the channel is arbitrarily selected within 80 MHz such as a discontinuous 20+20 or 20+40 or 40+20 or a continuous 60 MHz channel or the like.
  • the information using the channel or the non-use channel may be notified to the STA through the first part of the HE-SIG-B or the HE-SIG-A.
  • the STA In order for the STA to receive according to the indication information of the first part of the HE-SIG-B or according to the indication information in the HE-SIG-A, the unit channel is not used on the working bandwidth.
  • the AP and the STA may not use or temporarily not use the channel when communicating.
  • the information of the non-use channel may be transmitted in the indication information of the first part of the HE-SIG-B, or may be transmitted in the indication information of the HE-SIG-A.
  • the AP does not transmit the second part of the HE-SIG-B and the data on the unit channel, and not transmits the second part of the HE-SIG-B and the data notification STA, the STA according to the HE-SIG-B A part of the indication information or the information in the HE-SIG-A is not received on the unit channel where the working bandwidth is not used.
  • the method 100 further includes:
  • the AP jointly encodes each sub-information of the n sub-information
  • the AP instructs the STA to perform a joint cyclic redundancy check CRC or an independent CRC for each sub-information of the n sub-information.
  • the method 100 further includes:
  • the AP independently encodes each sub-information of the n sub-information
  • the AP instructs the STA to perform independent CRC for each sub-information of the n sub-informations.
  • the coding mode and the Cyclic Redundancy Check (CRC) detection mode of the second part of the HE-SIG-B can be determined by the AP side, and the coding mode and the detection mode can be written in the configuration specification spec.
  • the STA may be notified to the STA by the AP.
  • the STA is notified to the STA through the first part of the HE-SIG-A or the HE-SIG-B, which is not limited by the embodiment of the present invention. specifically,
  • HE-SIG-B when transmitting multi-user information on a specified single or multiple unit channels, there may be different coding modes and CRC detection methods. It can be joint coding, joint CRC detection, strong coding length and strong error correction capability, but the error decoding information of different users is strongly related to each other. As long as one user information is wrong, other users' information cannot be detected by CRC; it can also be joint coding. Independent CRC detection, long coding length and strong error correction capability, but the correlation of error decoding information of different users is weakened, users can only judge their own CRC detection, other users' CRC detection results will not affect each other; The user's information is independently coded, independent CRC detection, and the code length is short and the error correction capability is weak. The error decoding information of different users does not affect each other.
  • the indication information may be carried in the first part of the HE-SIG-B, or may be carried in the HE-SIG-A.
  • the example is described by taking the transmission in the first part of HE-SIG-B as an example.
  • the operating bandwidth is 80 MHz and the unit channel is 20 MHz.
  • a resource block of 242 subcarriers in channel 1 of the 80 MHz working bandwidth is allocated to the user, and a resource block of less than 242 subcarriers in channel 2 is allocated to the user, and channel 3 and channel 4 are 2x242 subcarriers. Assign a set of resource blocks to users.
  • the second part of the HE-SIG-B may be sent in the following manner: on the four channels of the working bandwidth of 80 MHz, the channel 1 does not repeatedly transmit the sub-information a of the second part, and the sub-information a corresponds to the user allocation information on the channel 1.
  • the channel 2 does not repeatedly transmit the second part of the sub-information b, the sub-information b corresponds to the user allocation information on the channel 2; the channel 3 and the channel 4 repeatedly transmit the second part of the sub-information c, the sub-information c corresponds to the channel 3 and the channel User assignment information on 4.
  • the sub-information c is repeatedly transmitted, and the repetition mode may be repeatedly transmitted every 20 MHz channel in frequency (as shown in FIG.
  • the sub-information c of the second part of -B is a repeating portion, which is halved compared to the rate of non-repeating sub-information (Fig. 8C). That is, the sub-information a and the sub-information b of the second part of HE-SIG-B of channel 1 and channel 2 are not Repeat, transmitted with Modulation and Coding Scheme (MCS1), and sub-information c of the second part of HE-SIG-B transmitted on two 20 MHz channels of channel 3 and channel 4 is transmitted by MCS0.
  • MCS1 Modulation and Coding Scheme
  • the repetition of the second part of HE-SIG-B is indicated in the indication of the first part of HE-SIG-B.
  • the indication information may be a bit identifier.
  • Both the AP side and the STA side are configured with a mapping relationship between the bit identifier and the sending mode. Taking the mapping relationship as a table, Table 1 lists various repetition modes of the second part of HE-SIG-B in the case of 80 MHz bandwidth continuous channel bonding, and requires 3 bit indication in the first part of HE-SIG-B.
  • the second part of HE-SIG-B uses which row in the table corresponds to the transmission method.
  • the transmission schemes in FIGS. 8A, 8B, and 8C correspond to the fourth row (Index 4) of Table 1.
  • the number of bits indicating the second part of the transmission mode in the first part of the HE-SIG-B may be a fixed number of bits, or the corresponding number of bits may be selected according to the bandwidth.
  • the embodiment of the present invention may indicate the sending of the second part of the HE-SIG-B in an implied manner by using an indication of the resource allocation information in the user common information in the first part of the HE-SIG-B. the way.
  • the indication of the resource allocation information may be various.
  • a resource block of 26 subcarriers is represented by 1
  • a resource block of 56 subcarriers is represented by 11
  • a resource block of 108 subcarriers is represented by 111
  • 242 subcarriers are represented by 1111.
  • the resource block, 11111 represents a resource block of 2x242 subcarriers, and 0 represents the adjacent resource block size change, then 1111011011010111011111 can indicate the resource allocation mode on different channels within 80 MHz, and the previous 11110 is 242 sub-channels.
  • the resource blocks of the carrier are allocated to the user, and the subsequent 110110101110 is allocated to the user in resource 2 with less than 20 MHz, and 11111 is channel 3 and channel 4 is allocated to the user with 2x242 resource blocks.
  • the resource allocation information in the first part of the HE-SIG-B it can be known that the channel 1 is allocated to the user by using resource blocks of 1x242 subcarriers, and the channel 2 is allocated to the user by using resource blocks of less than 242 subcarriers, indicating that the channel 1 and Channel 2 is independently allocated in each 20 MHz, then the second part of HE-SIG-B corresponding to the second part of HE-SIG-B is channel 1 and the second part of channel 2 is non-repetitive independent transmission; and channel 3 and channel 4 are 2x242 Assigned to the user, the second part of HE-SIG-B corresponding to channel 3 and channel 4 is repeated transmission.
  • An indication may be sent in the indication information to indicate the repetition mode.
  • the method may not be used to repeat the transmission in a repeated manner (the AP and the STA are known).
  • the corresponding scheme of Table 1 only considers the 80 MHz continuous channel binding.
  • the indication method in the embodiment of the present invention can also be extended to indicate the case of arbitrarily selecting a channel within 80 MHz. For example, non-continuous 20+20 or 20+40 or 40+20 or continuous 60MHz channels, etc.
  • the indication information shown in Table 2 can be used to inform the user which channels in the second part of HE-SIG-B are not transmitting information (the symbol "x" indicates that the channel is not used) and which channels are transmitting duplicate information.
  • 4 bits are required to indicate which row (Index) in Table 2 is used.
  • HE-SIG-B does not transmit on unused channels, only the transmission used, the first part of HE-SIG-B information is repeatedly transmitted at every 20 MHz used, and the second part of HE-SIG-B Send duplicate or non-repeating information as specified in the first section.
  • Table 2 can also eliminate the repetition/non-repetition on the used channel.
  • the information can be reduced to 3 bits indicating the use or non-use channel number in Table 3.
  • the indication bits of the used or non-used channels may also be placed in whole or in part in the HE-SIG-A, since the first part of the HE-SIG-B is similar to the HE-SIG-A, and can be repeatedly transmitted on the used channel, the user is arbitrary This information is available on one channel.
  • the AP may inform the STA of the channel it uses or the non-used channel through the first part of the HE-SIG-A or HE-SIG-B.
  • the 3 bits are used to indicate the bandwidth selection 20, 40, 80, 160 or 80 MHz in the 60, 20+20, 20+40, 40+20 modes, and in the first part of the HE-SIG-B.
  • only one bit is used to indicate whether there are two consecutive unused channels in the 80 MHz, and the two cases of 20+20 MHz can be further distinguished.
  • the AP may also notify the STA by using the non-used channel.
  • the specific content and the notification manner of the notification are not limited in the embodiment of the present invention.
  • the AP does not send the preamble and data on the unused channel, but transmits the preamble and data on the used channel, and the first part of the HE-SIG-A and HE-SIG-B in the preamble indicates that the user is using the common signaling.
  • the transmission is repeated every 20 MHz on the channel, and the second part of the HE-SIG-B indicates that the user-specific signaling is transmitted in accordance with the indication information of the first part of the HE-SIG-B.
  • the STA determines the non-use channel according to the information used by the AP notification or the information of the non-use channel, and does not use the non-use channel. Receive.
  • the scheme of the embodiment of the present invention is different from the channel selection in the 80+80 MHz channel mode in 802.11ac. Whether the 80+80 MHz channel is used is determined according to whether the node has multiple radio frequency transmitting and receiving units, and if the node has two radio frequencies, Supports 80+80MHz; this method is also different from the continuous channel bonding in the 80MHz channel in 802.11ac. By default, the preamble and data are transmitted on all 20MHz channels.
  • the corresponding resource block type is single, and the number of allocated users is multi-user multiple-input multiple-output technology (Multi-User Multiple-Input Multiple-Output) , MU-MIMO) spatial multiplexing user number limitation, corresponding to less indication information required in the second part of HE-SIG-B; and corresponding to resource allocation by resource blocks of less than 242 subcarriers in one 20 MHz channel
  • OFDMA and MU-MIMO can support a larger number of users in common 20 MHz, corresponding to more indication information in the second part of HE-SIG-B.
  • the portion of the resource allocation information of the second part of the HE-SIG-B is repeatedly transmitted using the idle channel resource of the second part of the HE-SIG-B on the basis of independently indicating the resource allocation information of each channel.
  • the repetition mode can be repeated on the 20 MHz channel that is idle on the frequency; the modulation coding rate can also be repeatedly transmitted; if the idle channel is adjacent to the repeated channel, the symbol can be repeated in time.
  • the indication information for repeatedly transmitting the related resource allocation information may be indicated in the first part or may be transmitted in the HE-SIG-A before the HE-SIG-B.
  • the block is allocated to the user, and the resource blocks of channel 3 and channel 4 in groups of 2x242 subcarriers are allocated to one user.
  • the transmission pattern of the second part of the HE-SIG-B of the embodiment of the present invention is that the second part of the HE-SIG-B on the channel 1 indicates the resource allocation information of the user on the corresponding channel 1 (HE-SIG-B Sub-information a); the second part of HE-SIG-B on channel 2 indicates resource allocation information of the user on the corresponding channel 2 (sub-information b of HE-SIG-B); HE-SIG-B on channel 4
  • the second part indicates resource allocation information (sub-information c of HE-SIG-B) corresponding to users on channel 3 and channel 4.
  • Channel 3 is an idle channel for repeatedly transmitting sub-information b of the second portion of HE-SIG-B of channel 2.
  • the repetition mode may be repeated every 20 MHz channel in frequency (as shown in FIG. 9A), or may be repeated in time (as shown in FIG. 9B), and may be coded repeatedly (as shown in FIG. 9C), for example, the second part of HE-SIG-B is repeated.
  • the rate of the part is reduced compared to the non-repeating part half.
  • the second partial information of HE-SIG-B of channel 1 and channel 4 is not repeated, and is transmitted by MCS1, and the second of HE-SIG-B transmitted on two 20 MHz channels of channel 2 and channel 3 Part of the information is transmitted using MCS0.
  • the repetition of the second part of HE-SIG-B is indicated in the indication of the first part of HE-SIG-B.
  • the indication information may be a bit identifier.
  • Both the AP side and the STA side are configured with a mapping relationship between the bit identifier and the sending mode. Taking the mapping relationship as a table, Table 4 lists various repetition modes of the second part of HE-SIG-B in the case of 80 MHz bandwidth continuous channel bonding, and requires 3 bit indication in the first part of HE-SIG-B.
  • the second part of HE-SIG-B uses which row in the table corresponds to the transmission method.
  • the transmission method in FIGS. 9A, 9B, and 9C corresponds to the third line (Index3) of Table 4.
  • the number of bits indicating the second part of the transmission mode in the first part of the HE-SIG-B may be a fixed number of bits, or the corresponding number of bits may be selected according to the bandwidth.
  • the corresponding embodiment of Table 4 differs from the embodiment corresponding to Table 1 in that the corresponding embodiment of Table 4 allows a more flexible repeating manner, including the manner of repeated transmission on a discontinuous channel, as in Table 1 at HE-SIG- The first part of B requires a 3-bit indication.
  • the embodiment of the present invention may indicate the sending manner of the second part of the HE-SIG-B in an implied manner by using an indication of the resource allocation information in the user common information in the first part of the HE-SIG-B.
  • the indication of the resource allocation information may be various.
  • a resource block of 26 subcarriers is represented by 1
  • a resource block of 56 subcarriers is represented by 11
  • a resource block of 108 subcarriers is represented by 111
  • 242 subcarriers are represented by 1111.
  • Resource block 11111 represents a resource block of 2x242 subcarriers, with 0 representing the adjacent resource block size change, then 1111011011010111011111 can indicate the resource allocation mode on different channels in 80MHz.
  • the resource block of 242 subcarriers is allocated to the user in channel 1.
  • the subsequent 110110101110 is allocated to the user in resource 2 with less than 20MHz.
  • 11111 is that channel 3 and channel 4 are allocated to the user with 2x242 resource blocks.
  • channel 1 is allocated to the user by using resource blocks of 1x242 subcarriers
  • channel 2 is allocated to the user by resource blocks of less than 242 subcarriers
  • channel 3 and Channel 4 is assigned to the user at 2x242.
  • the second part of HE-SIG-B may be transmitted by channel 3 only in channel 3 and channel 4, while the idle channel 4 indicates the largest resource allocation information in other channels.
  • the number of users on channel 2 is the largest and the resource allocation information is the largest, and the second part of HE-SIG-B of channel 2 is repeatedly transmitted on channel 4.
  • the repetition pattern may be repeated every 20 MHz channel in frequency (as in FIG.
  • the second portion of the HE-SIG-B is halved at a rate compared to the non-repeating portion.
  • the information of the second part of HE-SIG-B of channel 1 and channel 3 is not repeated, and is transmitted by MCS1, and the part of HE-SIG-B transmitted on two 20 MHz channels of channel 2 and channel 4 The two parts of information are transmitted using MCS0.
  • the corresponding scheme of Table 4 only considers the case of 80 MHz continuous channel bonding.
  • the indication method in the embodiment of the present invention can also be extended to indicate the case of arbitrarily selecting a channel within 80 MHz. For example, non-continuous 20+20 or 20+40 or 40+20 or continuous 60MHz channels, etc.
  • the indication information shown in Table 5 can be used to inform the user which channels in the second part of HE-SIG-B are not transmitting information (the symbol "x" indicates that the channel is not used) and which channels are transmitting duplicate information.
  • 5 bits are required to indicate which row (Index) in Table 5 is used.
  • HE-SIG-B does not transmit on unused channels, only the transmission used, the first part of HE-SIG-B information is repeatedly transmitted at every 20 MHz used, and the second part of HE-SIG-B Send duplicate or non-repeating information as specified in the first section.
  • Table 5 can also eliminate the repeated/non-repeating manner on the used channel. And the overhead can be reduced to 3 bits to indicate the use/non-use channel number in Table 3.
  • the indication bits of the used/non-used channel may also be placed in whole or in part in the HE-SIG-A, since the first part of the HE-SIG-B is similar to the HE-SIG-A, and is repeatedly transmitted on the used channel, the user is This information is available on any channel.
  • the HE-SIG-A uses 3 bits to indicate the bandwidth selection in 20, 40, 80, 160 or 80 MHz within 60, 20+20, 20+40, 40+20 modes, and in the first part of HE-SIG-B.
  • the main 20MHz channel which channel is not used, combined with the indication information in the HE-SIG-A, only one bit is used to indicate whether there are two consecutive unused channels in the 80 MHz, and the two cases of 20+20 MHz can be further distinguished.
  • the communication method of the embodiment of the present invention repeatedly transmits the first part of the HE-SIG-B for transmitting the public information of the user on each unit channel used by the working bandwidth, and indicates the HE-SIG on the working bandwidth in the first part.
  • the access point transmits the sub-information of the second part of the HE-SIG-B on at least one unit channel used by the working bandwidth according to the above-mentioned transmission mode, and can flexibly transmit the HE-SIG-B
  • the user-specific information in the user improves the robustness of the transmitted information and the system overhead is small.
  • the embodiment of the present invention may also adopt a method of combining the repetition manner of the second part of HE-SIG-B in multiple unit channels and the resource allocation information of the data.
  • channel 1 is the primary channel and the other channels 2, 3, and 4 are the non-primary channels (secondary channels).
  • DC tone central subcarrier
  • RU resource block
  • Channel 1 and channel 2 can be combined into one 2x242 resource block, or can be allocated to 26/52/108/242 different resource block combinations within 20 MHz respectively; similarly, channel 3 and channel 4 can be combined into one 2x242.
  • the resource blocks can also be allocated to 26/52/108/242 different resource block combinations within 20 MHz respectively; however, due to the resource block size limitation, resource blocks of channel 2, channel 3 and intermediate 1x26 subcarriers cannot be combined. Similarly, there is no combination of three channels, only channel 1-4 is allowed along with the intermediate 1x26 resource block, and a resource block constituting one 994 is allocated to Multi-User Multiple-Input Multiple-Output (MU). -MIMO) use.
  • MU Multi-User Multiple-Input Multiple-Output
  • the above resource allocation combination may indicate any combination of Table 7 by 4 bits, the sequence number 1-7 is a resource allocation indicating Contiguous Channel Bonding within 80 MHz, and the sequence number 8-13 is a non-contiguous channel indicating 80 MHz. Resource allocation for Non-contiguous Channel Bonding, sequence number 14-15 is a resource allocation indicating continuous channel bonding within 40 MHz, and sequence number 16 indicates resource allocation within 20 MHz.
  • the second part of HE-SIG-B can refer to the resource allocation mode of the data part to select the corresponding transmission mode. If the data part is allocated to one or more users according to the resource block larger than 20MHz, then the second part of HE-SIG-B Select multiple 20MHz letters in their correspondence On-channel transmission; if the data portion is allocated to one or more users in resource blocks less than 20 MHz, then the second portion of HE-SIG-B is selected to transmit on its corresponding 20 MHz channel.
  • the resource block larger than 20 MHz corresponding to Index 1 of 994 the corresponding user allocation resource is transmitted within 80 MHz corresponding to the second part of HE-SIG-B; and the resource block of 2x242 of index 2 is larger than 20 MHz, and the corresponding user allocation The resource is transmitted within 40 MHz corresponding to the second part of HE-SIG-B.
  • the resource block of less than 20 MHz corresponding to the unit channel within 20 MHz for example, the resource block includes 26, 52, 106 or 242 subcarriers, and the small resource block is limited to the unit channel and does not cross.
  • the corresponding user allocation resources are combined and indicated within 20 MHz corresponding to the second part of HE-SIG-B.
  • the specific resource allocation information in the corresponding 20 MHz channel that is, the indication information is sent on the channel, does not need to be indicated on other channels.
  • the beginning part of the second part of the HE-SIG-B transmitted on the channel first indicates how the resource blocks in the channel are combined, and then transmits the user ID, and the HE that the user who has allocated the resource on the channel transmits on the channel.
  • the second part of -SIG-B can find the corresponding ID, modulation and coding scheme (MCS, LDPC/BCC), multi-antenna transmit diversity (STBC), beamforming (beamforming) and other information.
  • the second part of HE-SIG-B which can also be transmitted on the channel, transmits the ID of the user, the allocated resource block position and size, and other modulation and coding schemes, multi-antenna transmit diversity, beamforming, in units of users. And other information.
  • the second part of the HE-SIG-B includes the user-specific information, and the embodiment of the present invention does not limit the specific transmission form.
  • the specific resource allocation information is within the corresponding multiple 20 MHz channels. If the resource block larger than 20 MHz is unique, for example, limited to a multiple of the largest resource block in the unit channel (for example, 242x2), then in the second part of the HE-SIG-B, it is not necessary to indicate the resource block combination, and the user ID is directly indicated, that is, corresponding to The second part of the HE-SIG-B transmitted by the user who allocates resources on the channel on the channel can find the respective ID or User Group ID (Group ID), modulation and coding scheme, multi-antenna transmit diversity, beamforming and other information.
  • Group ID User Group ID
  • the intermediate 1x26 resource block which cannot be used alone, can be used in conjunction with channel 2 on its left, or channel 1 and channel 2; or in combination with channel 3 or channel 3 on the right and channel 4.
  • channel 1 and channel 2 in Index 2 constitute 2x242
  • resource blocks larger than 20 MHz corresponding to users who allocate 2x242 (resource blocks larger than 20 MHz) in channel 1 and channel 2
  • the resource allocation information is in channel 1 and channel 2 corresponding to the second part of HE-SIG-B.
  • the resource allocation information is in the HE-SIG-B.
  • the second part corresponds to the channel 2 indication.
  • channel 1 is the main channel within 80 MHz, the default transmission data and the second part of HE-SIG-B, while the other channels are non-primary channels, and the AP can select not on certain channels according to the channel measurement.
  • the transmission is as shown in Index 7-16 of Table 7, where Index 14-15 is the case of 40 MHz continuous channel bonding, and Index 16 is the case where only the primary channel is selected at 20 MHz.
  • the indication information further includes that the bandwidth of the scheduled user is greater than or equal to the location of the unit channel where the resource allocation unit of the unit channel is located, and the resource allocation unit whose bandwidth is smaller than the unit channel.
  • the AP is scheduled to be sent by the first part of HE-SIG-A or HE-SIG-B.
  • the public indication information of the user may include a unit channel location indicating that the bandwidth of the scheduled user is greater than or equal to a resource allocation unit (RU ⁇ 20 MHz) of the unit channel, and a resource allocation unit having a bandwidth smaller than the unit channel (RU ⁇ 20 MHz) The location of the unit channel.
  • the resource allocation information includes allocation information of the resource allocation unit whose bandwidth is larger than the unit channel. That is, large resource allocation information compression is transmitted in the public indication information, and small resource allocation information is left in the proprietary information of the scheduled user.
  • the method 100 further includes:
  • the AP sends a fourth indication to the STA indicating at least one time period of the uplink and/or downlink data packet, where the fourth indication is carried in the HE-SIG-A;
  • the AP sends a fifth indication to the STA indicating at least one of a length of the at least one time period, an HE-LTF length indication, an HE-LTF compression indication, and a multi-channel resource indication, the fifth indication being carried in the HE-SIG -B in the first part.
  • an OFDMA multi-user data packet it can be segmented in time, and multiple user common frequency resources can be scheduled in each time period, as shown in Table 8 below.
  • the corresponding indication signaling needs to indicate information of each time period in the first part and the second part of the HE-SIG-B, respectively.
  • the users scheduled in each time period can be different.
  • HE-STF and HE-LTF are sent at the beginning of each time period to help different users automatically. Power gain control and channel estimation.
  • the time period indication signaling may be included in the HE-SIG-A, for example, the 2-bit time period indication signaling is included in Table 9.
  • the multi-channel resource allocation indication of one or more time periods in the first part of the HE-SIG-B can be known. If there is only one time period, the first part of HE-SIG-B occupies one symbol, as shown in Table 10, which includes a 4-bit multi-channel resource allocation indication of the time period, as shown in Table 10, which may additionally include The length indication of the HE-LTF and the compression bit indication and the like in the time period.
  • the first part of HE-SIG-B occupies two symbols, as shown in Table 11, including common information for each time period, such as 4-bit multi-channel resource indication for each time period and each The length indication of the HE-LTF of the time period and the compression bit indication and the like.
  • the content of the first part of HE-SIG-B is independent of HE-SIG-A and HE-SIG-B part 2, separately coded and verified.
  • the multi-channel resource indication for each time period in the first part of the HE-SIG-B the related information of at least one user included in each time period is also separately transmitted in the second part of the subsequent HE-SIG-B.
  • FIG. 11 shows a schematic flow chart of a communication method 200 in accordance with an embodiment of the present invention.
  • the access point AP in the wireless local area network WLAN to which the method 200 is applied and the at least one station STA communicate on the working bandwidth.
  • the method 200 is performed by the STA, and includes:
  • the STA receives the indication information common to the scheduled users sent by the AP on the primary unit channel used by the working bandwidth, where the indication information is used to indicate that the AP sends the dedicated n sub-subjects of the scheduled users on the working bandwidth.
  • the STA receives, according to the indication information, m pieces of sub-information sent by the AP according to the manner corresponding to the sending manner, where m is a positive integer less than or equal to n.
  • the STA receives the indication information common to the scheduled users on the primary unit channel used by the working bandwidth, so as to indicate the manner in which the dedicated information of the scheduled user is transmitted on the working bandwidth, the AP and the STA.
  • Sending and receiving according to the foregoing sending manners respectively can ensure the robustness of the user-specific information, reduce system signaling overhead, and improve system efficiency.
  • the STA receives, on the primary unit channel that is used by the working bandwidth, the indication information of the scheduled user that is sent by the AP, including:
  • the STA Receiving, by the STA, the first part of the signaling indication part B HE-SIG-B of the high efficiency packet sent by the AP on the primary unit channel used by the working bandwidth, where the first part of the HE-SIG-B includes the Instructions.
  • the method 200 further includes:
  • the STA receives the first portion of the HE-SIG-B on at least one non-primary unit channel used by the working bandwidth.
  • the STA receives, on the primary unit channel that is used by the working bandwidth, the indication information of the scheduled user that is sent by the AP, including:
  • the STA repeatedly receives the signaling indication portion A HE-SIG-A of the high efficiency packet on each unit channel including the primary unit channel used by the working bandwidth, wherein the indication information is included in the HE-SIG-A.
  • the sending manner includes: carrying a location of at least one unit channel corresponding to each of the n sub-informations.
  • the indication information includes a bit identifier
  • the STA receives, according to the indication information, the m pieces of sub-information sent by the AP, in a manner corresponding to the sending manner, including:
  • the STA receives the m sub-information on the at least one unit channel corresponding to the m sub-information determined by the bit identifier and the mapping relationship between the bit identifier and the transmission channel, where the mapping relationship is pre-configured on the AP and the STA. .
  • the indication information includes resource allocation information, where the AP indicates that the AP is at least one unit channel allocated by the STA for sending data, and the STA according to the indication information Receiving, in the manner corresponding to the sending manner, the m pieces of sub-information sent by the AP, including:
  • the STA receives the m sub-informations on at least one unit channel allocated by the AP for transmitting data;
  • the STA also receives the m sub-informations on at least one idle unit channel that uses bandwidth but does not transmit data.
  • the indication information further includes that the bandwidth of the scheduled user is greater than or equal to the location of the unit channel where the resource allocation unit of the unit channel is located, and the unit channel location where the bandwidth allocation unit is smaller than the resource allocation unit of the unit channel.
  • the resource allocation information includes allocation information of the resource allocation unit whose bandwidth is larger than the unit channel.
  • the at least one unit channel includes the primary unit channel.
  • the sending manner further includes: a repetition manner of each of the n sub-information.
  • the repeating manner includes:
  • the transmission is repeated in accordance with the code.
  • the repeating manner includes:
  • the transmission is repeated in accordance with the code.
  • the indication information includes a first indication of a unit channel for indicating that the working bandwidth is not used, and the method further includes:
  • the STA does not perform reception on the unit channel that is not used by the working bandwidth according to the first indication.
  • all unit channels used by the working bandwidth are continuously distributed or discontinuously distributed over the working bandwidth.
  • the method 200 further includes:
  • a fifth indication that is sent by the AP, indicating a length of the at least one time period, a long training field HE-LTF length indication of a high efficiency packet, an HE-LTF compression indication, and a multi-channel resource indication, where The fifth indication is carried in the first part of the HE-SIG-B.
  • the method 200 further includes:
  • the STA performs a joint cyclic redundancy check CRC or performs an independent CRC on the received m pieces of information according to the sixth indication.
  • the STA receives the indication information common to the scheduled users on the primary unit channel used by the working bandwidth, so as to indicate the manner in which the dedicated information of the scheduled user is transmitted on the working bandwidth, the AP and the STA.
  • Sending and receiving according to the foregoing sending manners respectively can ensure the robustness of the user-specific information, reduce system signaling overhead, and improve system efficiency.
  • FIG. 12 shows an access point AP 300 in accordance with an embodiment of the present invention.
  • the AP 300 belongs to a wireless local area network WLAN, and the WLAN further includes at least one station STA, the AP 300 and the at least one The STAs communicate on the working bandwidth.
  • the AP 300 includes:
  • the first sending module 310 is configured to send indication information common to the scheduled users on the primary unit channel used by the working bandwidth, where the indication information is used to indicate sending of the dedicated n sub-information of the scheduled user on the working bandwidth. Way, where n is a positive integer;
  • the second sending module 320 is configured to send the n sub-informations on the unit channel used by the working bandwidth according to the sending manner.
  • the AP in the embodiment of the present invention transmits the indication information common to the scheduled users on the primary unit channel used by the working bandwidth to indicate the manner in which the dedicated information of the scheduled user is transmitted on the working bandwidth, and the AP and the STA respectively follow the
  • the above transmission mode transmission and reception can ensure the robustness of the user-specific information, reduce system signaling overhead, and improve system efficiency.
  • the first sending module 310 is specifically configured to:
  • the second sending module 320 is specifically configured to:
  • n sub-information is carried in the second part of the HE-SIG-B, and is transmitted on the unit channel used by the working bandwidth according to the transmission mode.
  • the AP 300 further includes:
  • a third sending module configured to carry the indication information in the first part of the HE-SIG-B, and send the at least one non-primary unit channel used by the working bandwidth.
  • the first sending module 310 is specifically configured to:
  • the indication information is carried in the signaling indication part A HE-SIG-A of the high efficiency packet, and is repeatedly transmitted on each unit channel including the primary unit channel used by the working bandwidth.
  • the sending manner includes: carrying a location of at least one unit channel corresponding to each of the n sub-informations.
  • the indication information includes a bit identifier
  • the second sending module 320 is specifically configured to:
  • the indication information includes resource allocation information, where the resource allocation information indicates at least one unit channel that is allocated by the AP for the STA to send data
  • the second sending module 320 is specifically configured to:
  • the first sub-information corresponding to the STA is also transmitted on at least one idle unit channel that is used as the working bandwidth but does not transmit data.
  • the indication information further includes that the bandwidth of the scheduled user is greater than or equal to the location of the unit channel where the resource allocation unit of the unit channel is located, and the unit channel location where the bandwidth allocation unit is smaller than the resource allocation unit of the unit channel.
  • the resource allocation information includes allocation information of the resource allocation unit whose bandwidth is larger than the unit channel.
  • the at least one unit channel includes the primary unit channel.
  • the sending manner further includes: a repetition manner of each of the n sub-information.
  • the repeating manner includes:
  • the transmission is repeated in accordance with the code.
  • the repeating manner includes:
  • the coding is repeated.
  • the indication information includes a first indication of a unit channel indicating that the working bandwidth is not used, so as to indicate that the STA is in the non-used unit channel of the working bandwidth according to the first indication. Do not receive.
  • all unit channels used by the working bandwidth are continuously distributed or discontinuously distributed over the working bandwidth.
  • the AP 300 further includes:
  • a fourth sending module configured to send, to the STA, a fourth indication indicating at least one time period of the uplink and/or downlink data packet, where the fourth indication is carried in the HE-SIG-A;
  • a fifth sending module configured to send, to the STA, a long training field HE-LTF length indication indicating a length of the at least one time period, a high efficiency packet, an HE-LTF compression indication, and a multi-channel resource indicator A fifth indication of at least one of the indications carried in the first portion of the HE-SIG-B.
  • the AP 300 further includes:
  • a first encoding module configured to jointly encode each of the n sub-information
  • the first indication module is configured to instruct the STA to perform a joint cyclic redundancy check CRC or perform an independent CRC for each sub-information of the n sub-information.
  • the AP 300 further includes:
  • a second encoding module configured to independently code each sub-information of the n sub-information
  • the second indication module is configured to instruct the STA to perform independent CRC on each sub-information of the n sub-information.
  • an AP 300 in accordance with an embodiment of the present invention may correspond to performing respective subjects in a method in accordance with an embodiment of the present invention, and that the above and other operations and/or functions of the various modules in the AP 300 are respectively implemented in order to implement FIG. The corresponding processes of the respective methods in FIG. 11 are not repeated here for brevity.
  • the AP in the embodiment of the present invention transmits the indication information common to the scheduled users on the primary unit channel used by the working bandwidth to indicate the manner in which the dedicated information of the scheduled user is transmitted on the working bandwidth, and the AP and the STA respectively follow the
  • the above transmission mode transmission and reception can ensure the robustness of the user-specific information, reduce system signaling overhead, and improve system efficiency.
  • FIG. 13 shows a site STA 400 in accordance with an embodiment of the present invention.
  • the STA 400 belongs to a wireless local area network WLAN, the WLAN includes an access point AP, and at least one station STA including the STA 400, the AP and the at least one STA communicate on a working bandwidth, as shown in FIG. 13, the STA 400 include:
  • the first receiving module 410 is configured to receive indication information common to the scheduled users sent by the AP on the primary unit channel used by the working bandwidth, where the indication information is used to indicate that the AP sends the scheduled user on the working bandwidth. a method for transmitting a dedicated n sub-information, where n is a positive integer;
  • the second receiving module 420 is configured to receive, according to the indication information, m pieces of sub-information sent by the AP according to the manner corresponding to the sending manner, where m is a positive integer less than or equal to n.
  • the STA of the embodiment of the present invention receives the indication information common to the scheduled users on the primary unit channel used by the working bandwidth to indicate the manner in which the dedicated information of the scheduled user is transmitted on the working bandwidth, and the AP and the STA respectively follow the
  • the above transmission mode transmission and reception can ensure the robustness of the user-specific information, reduce system signaling overhead, and improve system efficiency.
  • the first receiving module 410 is specifically configured to:
  • the STA 400 further includes:
  • a third receiving module configured to receive the first part of the HE-SIG-B on the at least one non-primary unit channel used by the working bandwidth.
  • the first receiving module 410 is specifically configured to:
  • the signaling indication portion A HE-SIG-A that repeatedly receives the high efficiency packet on each unit channel including the primary unit channel used by the working bandwidth, wherein the indication information is included in the HE-SIG-A.
  • the sending manner includes: carrying a location of at least one unit channel corresponding to each of the n sub-informations.
  • the indication information includes a bit identifier
  • the second receiving module 420 is specifically configured to:
  • the at least one unit channel corresponding to the m sub-information determined by the bit identifier and the mapping relationship between the bit identifier and the transmission channel is received, and the mapping information is pre-configured on the AP and the STA.
  • the indication information includes resource allocation information, where the resource allocation information indicates that the AP is at least one unit channel allocated by the STA for sending data, and the second receiving module 420 is specifically used. to:
  • the m sub-informations are also received on at least one idle unit channel that uses the working bandwidth but does not transmit data.
  • the indication information further includes that the bandwidth of the scheduled user is greater than or equal to the location of the unit channel where the resource allocation unit of the unit channel is located, and the unit channel location where the bandwidth allocation unit is smaller than the resource allocation unit of the unit channel.
  • the resource allocation information includes allocation information of the resource allocation unit whose bandwidth is larger than the unit channel.
  • the at least one unit channel includes the primary unit channel.
  • the sending manner further includes: a repetition manner of each of the n sub-information.
  • the repeating manner includes:
  • the transmission is repeated in accordance with the code.
  • the repeating manner includes:
  • the transmission is repeated in accordance with the code.
  • the indication information includes a first indication of a unit channel that is used to indicate that the working bandwidth is not used, and the STA 400 further includes:
  • a processing module configured to: according to the first indication, not receiving on the unit channel that is not used by the working bandwidth.
  • all unit channels used by the working bandwidth are continuously distributed or discontinuously distributed over the working bandwidth.
  • the STA 400 further includes:
  • a fourth receiving module configured to receive, by the AP, a fourth indication indicating at least one time period of the uplink and/or downlink data packet, where the fourth indication is carried in the HE-SIG-A;
  • a fifth receiving module configured to receive, by the AP, at least one of a length indicating the at least one time period, a long training field HE-LTF length indication of a high efficiency packet, an HE-LTF compression indication, and a multi-channel resource indication A fifth indication, the fifth indication is carried in the first part of the HE-SIG-B.
  • the STA 400 further includes:
  • a sixth receiving module configured to receive a sixth indication sent by the AP, where the sixth indication is used to indicate an encoding mode
  • the checking module is configured to perform a joint cyclic redundancy check CRC or perform an independent CRC on the received m pieces of information according to the sixth indication.
  • STA 400 in accordance with an embodiment of the present invention may correspond to performing respective subjects in a method in accordance with an embodiment of the present invention, and that the above and other operations and/or functions of the various modules in STA 400 are respectively implemented in order to implement FIG. The corresponding processes of the respective methods in FIG. 11 are not repeated here for brevity.
  • the STA of the embodiment of the present invention receives on the primary unit channel used in the working bandwidth.
  • the indication information common to the scheduled user is used to indicate the manner in which the dedicated information of the scheduled user is transmitted on the working bandwidth.
  • the AP and the STA respectively send and receive according to the foregoing sending manner, which can ensure the robustness of the user-specific information. Reduce system signaling overhead and improve system efficiency.
  • an embodiment of the present invention further provides an AP 500, which belongs to a wireless local area network (WLAN), and the WLAN further includes at least one station STA, and the AP 500 and the at least one STA communicate on a working bandwidth.
  • the AP 500 includes a processor 501, a memory 502, a bus system 503, and a transceiver 504.
  • the processor 501, the memory 502, and the transceiver 504 are connected by a bus system 503, where the memory 502 is used to store instructions, and the processor 501 is configured to execute the instructions stored in the memory 502 to control the transceiver 504 to send a signal.
  • the transceiver 504 is configured to: send, on the primary unit channel used by the working bandwidth, indication information that is common to the scheduled user, where the indication information is used to indicate a manner of sending the specific n pieces of sub-information of the scheduled user on the working bandwidth.
  • n is a positive integer
  • the n pieces of sub-information are transmitted on a unit channel used by the working bandwidth.
  • the AP in the embodiment of the present invention transmits the indication information common to the scheduled users on the primary unit channel used by the working bandwidth to indicate the manner in which the dedicated information of the scheduled user is transmitted on the working bandwidth, and the AP and the STA respectively follow the
  • the above transmission mode transmission and reception can ensure the robustness of the user-specific information, reduce system signaling overhead, and improve system efficiency.
  • the processor 501 may be a central processing unit ("CPU"), and the processor 501 may also be other general-purpose processors, digital signal processors (DSPs). , an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, and the like.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory 502 can include read only memory and random access memory and provides instructions and data to the processor 501.
  • a portion of the memory 502 can also include a non-volatile random access memory.
  • the memory 502 can also store information of the device type.
  • the bus system 503 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 503 in the figure.
  • each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 501 or an instruction in a form of software.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as hardware processor execution, or use hardware and software module groups in the processor.
  • the execution is completed.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 502, and the processor 501 reads the information in the memory 502 and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the transceiver 504 sends the indication information common to the scheduled user on the primary unit channel used by the working bandwidth, including:
  • the transceiver 504 sends the n sub-information on the unit channel used by the working bandwidth according to the sending manner, including:
  • n sub-information is carried in the second part of the HE-SIG-B, and is transmitted on the unit channel used by the working bandwidth according to the transmission mode.
  • the transceiver 504 is further configured to:
  • the indication information is carried in the first part of the HE-SIG-B and transmitted on at least one non-primary unit channel used by the working bandwidth.
  • the transceiver 504 sends the indication information common to the scheduled user on the primary unit channel used by the working bandwidth, including:
  • the indication information is carried in the signaling indication part A HE-SIG-A of the high efficiency packet, and is repeatedly transmitted on each unit channel including the primary unit channel used by the working bandwidth.
  • the sending manner includes: carrying a location of at least one unit channel corresponding to each of the n sub-informments
  • the indication information includes a bit identifier
  • the transceiver 504 sends the n sub-information on the unit channel used by the working bandwidth according to the sending manner, including:
  • the indication information includes resource allocation information, where the resource allocation information indicates that the AP is at least one unit channel allocated by the STA for transmitting data, and the transceiver 504 follows the sending manner. Transmitting the n sub-informations on the unit channel used by the working bandwidth, including:
  • the first sub-information corresponding to the STA is also transmitted on at least one idle unit channel that is used as the working bandwidth but does not transmit data.
  • the indication information further includes that the bandwidth of the scheduled user is greater than or equal to the location of the unit channel where the resource allocation unit of the unit channel is located, and the unit channel location where the bandwidth allocation unit is smaller than the resource allocation unit of the unit channel.
  • the resource allocation information includes allocation information of the resource allocation unit whose bandwidth is larger than the unit channel.
  • the at least one unit channel includes the primary unit channel.
  • the sending manner further includes: a repetition manner of each of the n sub-information.
  • the repeating manner includes:
  • the transmission is repeated in accordance with the code.
  • the repeating manner includes:
  • the coding is repeated.
  • the indication information includes a first indication of a unit channel indicating that the working bandwidth is not used, so as to indicate that the STA is in the non-used unit channel of the working bandwidth according to the first indication. Do not receive.
  • all unit channels used by the working bandwidth are continuously distributed or discontinuously distributed over the working bandwidth.
  • the transceiver 504 is further configured to:
  • a fourth indication indicating at least one time period of the uplink and/or downlink data packet, where the fourth indication is carried in the HE-SIG-A;
  • a fifth indication indicating at least one of a length of the at least one time period, a long training field HE-LTF length indication of a high efficiency packet, an HE-LTF compression indication, and a multi-channel resource indication, the fifth indication It is carried in the first part of HE-SIG-B.
  • the processor 501 is configured to:
  • the transceiver 504 is further configured to: instruct the STA to perform a joint cyclic redundancy check CRC or perform an independent CRC for each sub-information of the n pieces of sub-information.
  • the processor 501 is configured to:
  • Each sub-information of the n sub-information is independently encoded
  • the transceiver 504 is further configured to: instruct the STA to perform independent CRC on each sub-information of the n sub-informations.
  • the AP 500 may correspond to the AP 300 in the embodiment of the present invention, and may correspond to the corresponding body in the method according to the embodiment of the present invention, and the above and other of each module in the AP 500
  • the operations and/or functions are respectively implemented in order to implement the corresponding processes of the respective methods in FIG. 1 to FIG. 11 , and are not described herein for brevity.
  • the AP in the embodiment of the present invention transmits the indication information common to the scheduled users on the primary unit channel used by the working bandwidth to indicate the manner in which the dedicated information of the scheduled user is transmitted on the working bandwidth, and the AP and the STA respectively follow the
  • the above transmission mode transmission and reception can ensure the robustness of the user-specific information, reduce system signaling overhead, and improve system efficiency.
  • the embodiment of the present invention further provides a STA 600, which belongs to a wireless local area network WLAN, where the WLAN includes an access point AP, and at least one station STA including the STA 600, the AP and the at least One STA communicates over the working bandwidth, and the STA 600 includes a processor 601, a memory 602, a bus system 603, and a transceiver 604.
  • the processor 601, the memory 602, and the transceiver 604 are connected by a bus system 603, where the memory 602 is used to store instructions, and the processor 601 is configured to execute the instructions stored in the memory 602 to control the transceiver 604 to send a signal.
  • the transceiver 604 is configured to receive indication information common to the scheduled users sent by the AP on the primary unit channel used by the working bandwidth, where the indication information is used to indicate that the AP sends the dedicated user of the scheduled user on the working bandwidth. How to send n sub-information, where n is a positive integer;
  • the m pieces of sub-information transmitted by the AP are received in a manner corresponding to the transmission mode, where m is a positive integer less than or equal to n.
  • the STA of the embodiment of the present invention receives the indication information common to the scheduled users on the primary unit channel used by the working bandwidth to indicate the manner in which the dedicated information of the scheduled user is transmitted on the working bandwidth, and the AP and the STA respectively follow the
  • the above transmission mode transmission and reception can ensure the robustness of the user-specific information, reduce system signaling overhead, and improve system efficiency.
  • the processor 601 may be a central processing unit (“CPU"), and the processor 601 may also be other general-purpose processors, digital signal processors (DSPs). , an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, and the like.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory 602 can include read only memory and random access memory and provides instructions and data to the processor 601. A portion of the memory 602 may also include a non-volatile random access memory. For example, the memory 602 can also store information of the device type.
  • the bus system 603 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 603 in the figure.
  • each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 601 or an instruction in a form of software.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 602, and the processor 601 reads the information in the memory 602 and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the transceiver 604 receives, according to the primary unit channel used by the working bandwidth, the indication information that is sent by the AP, and includes:
  • the transceiver 604 is further configured to:
  • the first portion of the HE-SIG-B is received on at least one non-primary unit channel used by the working bandwidth.
  • the transceiver 604 receives, according to the primary unit channel used by the working bandwidth, the indication information that is sent by the AP, and includes:
  • the signaling indication portion A HE-SIG-A that repeatedly receives the high efficiency packet on each unit channel including the primary unit channel used by the working bandwidth, wherein the indication information is included in the HE-SIG-A.
  • the sending manner includes: carrying a location of at least one unit channel corresponding to each of the n sub-informations. .
  • the indication information includes a bit identifier
  • the transceiver 604 receives, according to the indication information, the m pieces of sub-information sent by the AP, in a manner corresponding to the sending manner, including:
  • the at least one unit channel corresponding to the m sub-information determined by the bit identifier and the mapping relationship between the bit identifier and the transmission channel is received, and the mapping information is pre-configured on the AP and the STA.
  • the indication information includes resource allocation information, where the resource allocation information indicates that the AP is at least one unit channel allocated by the STA for transmitting data, and the transceiver 604 is configured according to the indication information.
  • Receiving m pieces of sub-information sent by the AP according to the manner corresponding to the sending manner including:
  • the STA receives the m sub-informations on at least one unit channel allocated by the AP for transmitting data;
  • the STA also receives the m sub-informations on at least one idle unit channel that uses bandwidth but does not transmit data.
  • the indication information further includes that the bandwidth of the scheduled user is greater than or equal to the location of the unit channel where the resource allocation unit of the unit channel is located, and the unit channel location where the bandwidth allocation unit is smaller than the resource allocation unit of the unit channel.
  • the resource allocation information includes allocation information of the resource allocation unit whose bandwidth is larger than the unit channel.
  • the at least one unit channel includes the primary unit channel.
  • the sending manner further includes: a repetition manner of each of the n sub-information. .
  • the repeating manner includes:
  • the transmission is repeated in accordance with the code.
  • the repeating manner includes:
  • the coding is repeated.
  • the indication information includes a first indication of a unit channel indicating that the working bandwidth is not used, and the processor 601 is configured to:
  • all unit channels used by the working bandwidth are continuously distributed or discontinuously distributed over the working bandwidth.
  • the transceiver 604 is further configured to:
  • a fourth indication indicating at least one time period of the uplink and/or downlink data packet, where the fourth indication is carried in the HE-SIG-A;
  • a fifth indication indicating at least one of a length of the at least one time period, a long training field HE-LTF length indication of a high efficiency packet, an HE-LTF compression indication, and a multi-channel resource indication
  • the fifth The indication is carried in the first part of the HE-SIG-B.
  • the transceiver 604 is further configured to:
  • the processor 601 is also used to:
  • the received cyclic redundancy check CRC or the independent CRC is performed on the received m pieces of sub-information.
  • STA 600 may correspond to STA 400 in an embodiment of the present invention, and may correspond to the above-described and other operations of respective modules in STA 600 in performing the method according to an embodiment of the present invention.
  • the functions and/or functions are respectively implemented in order to implement the corresponding processes of the respective methods in FIG. 1 to FIG. 11 , and are not described herein again for brevity.
  • the STA of the embodiment of the present invention receives the indication information common to the scheduled users on the primary unit channel used by the working bandwidth to indicate the manner in which the dedicated information of the scheduled user is transmitted on the working bandwidth, and the AP and the STA respectively follow the
  • the above transmission mode transmission and reception can ensure the robustness of the user-specific information, reduce system signaling overhead, and improve system efficiency.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de communication, un point d'accès (AP), et une station (STA). Le procédé comprend les étapes consistant à : transmettre, par un Point d'Accès (AP), sur une voie élémentaire principale utilisée par une bande passante opérationnelle, des informations d'indication publiques à des utilisateurs programmés, les informations d'indication étant configurées pour indiquer un mode de transmission de n sous-informations privées des utilisateurs programmés sur la bande passante opérationnelle, n étant un nombre entier positif ; et transmettre, par l'AP, selon le mode de transmission, les n sous-informations sur la voie élémentaire utilisée par la bande passante opérationnelle. En transmettant les informations d'indication publiques aux utilisateurs programmés sur la voie élémentaire principale utilisée par une bande passante opérationnelle pour indiquer le mode de transmission des informations privées des utilisateurs programmés sur la bande passante opérationnelle, et en transmettant et en recevant, par l'AP et la STA respectivement, les informations privées des utilisateurs programmés selon le mode de transmission, le procédé de communication, l'AP et la STA décrits dans les modes de réalisation de la présente invention peuvent garantir la robustesse des informations privées des utilisateurs tout en réduisant le surdébit de signalisation du système et en augmentant l'efficacité du système.
PCT/CN2015/079997 2015-05-27 2015-05-27 Procédé de communication , point d'accès, et station Ceased WO2016187854A1 (fr)

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