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WO2025160760A1 - Procédé de commande de canal, dispositif de communication et système de communication - Google Patents

Procédé de commande de canal, dispositif de communication et système de communication

Info

Publication number
WO2025160760A1
WO2025160760A1 PCT/CN2024/074762 CN2024074762W WO2025160760A1 WO 2025160760 A1 WO2025160760 A1 WO 2025160760A1 CN 2024074762 W CN2024074762 W CN 2024074762W WO 2025160760 A1 WO2025160760 A1 WO 2025160760A1
Authority
WO
WIPO (PCT)
Prior art keywords
channel
random backoff
primary
secondary channels
control method
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/074762
Other languages
English (en)
Chinese (zh)
Inventor
董贤东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Xiaomi Mobile Software Co Ltd
Original Assignee
Beijing Xiaomi Mobile Software Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Xiaomi Mobile Software Co Ltd filed Critical Beijing Xiaomi Mobile Software Co Ltd
Priority to PCT/CN2024/074762 priority Critical patent/WO2025160760A1/fr
Publication of WO2025160760A1 publication Critical patent/WO2025160760A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a channel control method, communication equipment, and communication system.
  • UHR ultra-high reliability
  • SNR signal-to-noise ratio
  • the embodiments of the present disclosure provide a channel control method, a communication device, and a communication system to further improve the mechanism of WLAN devices in primary and secondary channels.
  • an embodiment of the present disclosure provides a channel control method, the method comprising:
  • the first device senses that the primary channel is busy and senses a channel state of the secondary channel; wherein the channel state includes idle or busy;
  • a processing operation of the random backoff window of the primary channel and/or other secondary channels is determined.
  • an embodiment of the present disclosure further provides a communication device, wherein the communication device is a first device, and the communication device includes:
  • a sensing module configured for the first device to sense that the primary channel is busy and sense the channel status of the secondary channel; wherein the channel status includes idle or busy;
  • the determining module is configured to determine a processing operation for the random backoff window of the primary channel and/or other secondary channels according to the channel status of the secondary channel.
  • an embodiment of the present disclosure further provides a communication device, wherein the communication device is a first device, including:
  • processors one or more processors
  • the communication device is used to execute the channel control method described in the embodiment of the present disclosure.
  • An embodiment of the present disclosure further provides a communication system, including a communication device; wherein the communication device is configured to implement the channel control method described in the embodiment of the present disclosure.
  • the embodiment of the present disclosure further provides a storage medium storing instructions.
  • the instructions When the instructions are executed on a communication device, the communication device executes the channel control method as described in the embodiment of the present disclosure.
  • the processing operation of the random backoff window of the main channel and/or other secondary channels is determined according to the channel status of the secondary channel; the processing operation, for example, maintains the count of the random backoff exposure, or generates a new random backoff number; according to the channel status of the secondary channel, the processing operation of the random backoff window of the main channel and/or other secondary channels is clarified, and the communication mechanism of the WLAN device in the primary and secondary channels is improved to meet the transmission requirements of UHR.
  • FIG1 is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure
  • FIG2 is a flow chart of a channel control method according to an embodiment of the present disclosure.
  • FIG3 is one of the exemplary schematic diagrams provided by an embodiment of the present disclosure.
  • FIG4 is a second exemplary schematic diagram provided by an embodiment of the present disclosure.
  • FIG5 is a second flow chart of the channel control method provided in an embodiment of the present disclosure.
  • FIG6 is a third flow chart of the channel control method provided in an embodiment of the present disclosure.
  • FIG7 is a fourth flow chart of the channel control method provided in an embodiment of the present disclosure.
  • FIG8 is a fifth flow chart of the channel control method provided in an embodiment of the present disclosure.
  • FIG9 is a schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure.
  • FIG10 is a schematic diagram of the structure of a chip proposed in an embodiment of the present disclosure.
  • the embodiments of the present disclosure provide a channel control method, a communication device, and a communication system.
  • an embodiment of the present disclosure provides a channel control method, the method comprising:
  • the first device senses that the primary channel is busy and senses a channel state of the secondary channel; wherein the channel state includes idle or busy;
  • a processing operation of the random backoff window of the primary channel and/or other secondary channels is determined.
  • the first device senses that the main channel is busy and senses the channel status of the secondary channel; after the first device senses the channel status of the secondary channel, the first device determines the processing operation of the random backoff window of the main channel and/or other secondary channels according to the channel status of the secondary channel; the processing operation is, for example, maintaining the count of the random backoff exposure, or generating a new random backoff number; according to the channel status of the secondary channel, the processing operation of the random backoff window of the main channel and/or other secondary channels is clarified, and the communication mechanism of the WLAN device on the main and secondary channels is improved to meet the transmission requirements of the UHR.
  • the first device senses that the primary channel is busy, including:
  • the first device senses that the main channel is busy, performs a random backoff operation, and generates a random backoff number and NAV timer for the main channel.
  • the first device senses that the primary channel is busy and performs a random backoff operation in a timely manner.
  • sensing the channel state of the secondary channel includes:
  • the secondary channels include at least two, and the secondary channels are sensed sequentially or simultaneously.
  • the order of sensing in the secondary channels is defined to improve the processing operation of the random backoff window of the primary channel and/or other secondary channels.
  • sequentially sensing the secondary channels includes:
  • the NAV timer under the secondary channel is 0, and the random backoff number counting is completed, and the channel status of the secondary channel is sensed again.
  • determining, based on the channel state of the secondary channel, a processing operation for a random backoff window of the primary channel and/or other secondary channels includes:
  • a random backoff number is generated for the Nth secondary channel; and before transmitting data, the random backoff number is counted in the primary channel, the N-1th secondary channel, and the Nth secondary channel at the same time; and according to the duration setting of the NAV timer in each channel, the count is performed and a new random backoff number is generated.
  • the Nth secondary channel is idle, data is transmitted on the Nth secondary channel, the random backoff numbers in the first N-1 secondary channels are released, and the NAV timers of the first N-1 secondary channels are set to 0; and the random backoff number in the primary channel is maintained, and the NAV timer count of the primary channel is maintained.
  • the processing operation of determining the random backoff window for the primary channel and/or other secondary channels is implemented according to the channel status of the secondary channel.
  • the simultaneously sensing the secondary channels includes:
  • Sensing is performed simultaneously in each of the secondary channels, and a random backoff number is generated and counted for each of the secondary channels.
  • determining, based on the channel state of the secondary channel, a processing operation for a random backoff window of the primary channel and/or other secondary channels includes:
  • the NAV timers of the primary channel and other secondary channels are set to 0, and/or the random backoff counts of the primary channel and other secondary channels are maintained;
  • the processing operation of determining the random backoff window for the primary channel and/or other secondary channels is implemented according to the channel status of the secondary channel.
  • the EDCA access parameter of the secondary channel is the same as the EDCA access parameter of the primary channel.
  • an embodiment of the present disclosure further provides a communication device, which is a first device, and includes at least one of a determination module and a sending module; wherein the communication device is used to execute an optional implementation method of the first aspect.
  • an embodiment of the present disclosure further provides a B device, comprising: a first receiving module; wherein the above-mentioned B device is used to execute the optional implementation method of the second aspect.
  • an embodiment of the present disclosure further provides a communication device, wherein the communication device is a first device, including:
  • processors one or more processors
  • the communication device is used to execute the optional implementation of the first aspect.
  • an embodiment of the present disclosure further provides a B device, including:
  • processors one or more processors
  • the B device is used to execute the optional implementation of the second aspect.
  • an embodiment of the present disclosure further provides a communication system, comprising a communication device; wherein the communication device is configured to perform the optional implementation method described in the first aspect, and the B device is configured to perform the optional implementation method described in the second aspect.
  • an embodiment of the present disclosure further provides a storage medium, which stores instructions.
  • the instructions When the instructions are executed on a communication device, the communication device executes the optional implementation method described in the first aspect.
  • an embodiment of the present disclosure proposes a program product.
  • the program product is executed by a communication device
  • the communication device executes the method described in the optional implementation manner of the first aspect.
  • an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation manner of the first aspect.
  • an embodiment of the present disclosure provides a chip or a chip system, which includes a processing circuit configured to execute the method described in the optional implementation of the first aspect.
  • the embodiments of the present disclosure provide a channel control method, a communication device, and a communication system.
  • the terms channel control method, signal transmission method, wireless frame transmission method, etc. can be used interchangeably, and the terms information processing system, communication system, etc. can be used interchangeably.
  • each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined.
  • a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged.
  • the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.
  • plurality refers to two or more.
  • the terms "at least one,””one or more,””a plurality of,””multiple,” etc. may be used interchangeably.
  • descriptions such as “at least one of A and B,” “A and/or B,” “A in one case, B in another case,” or “in response to one case A, in response to another case B” may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.
  • a or B and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.
  • prefixes such as “first” and “second” in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects.
  • the description object please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes.
  • the description object is a "field”
  • the ordinal number before the "field” in the "first field” and the "second field” does not limit the position or order between the "fields”.
  • “First” and “second” do not limit whether the "fields” they modify are in the same message, nor do they limit the order of the "first field” and the "second field”.
  • the description object is a "level”
  • the ordinal number before the "level” in the “first level” and the “second level” does not limit the priority between the "levels”.
  • the number of description objects is not limited by the ordinal number and can be one or more. Taking “first device” as an example, the number of "devices" can be one or more.
  • the objects modified by different prefixes can be the same or different.
  • the description object is "device”
  • the "first device” and the “second device” can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information”, then the "first information” and the “second information” can be the same information or different information, and their contents can be the same or different.
  • “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.
  • terms such as “in response to", “in response to determining", “in the case of", “at the time of", “when!, “if", “if", etc. can be used interchangeably.
  • terms such as “greater than”, “greater than or equal to”, “not less than”, “more than”, “more than or equal to”, “not less than”, “higher than”, “higher than or equal to”, “not less than”, and “above” can be replaced with each other, and terms such as “less than”, “less than or equal to”, “not greater than”, “less than”, “less than or equal to”, “not more than”, “lower than”, “lower than or equal to”, “not higher than”, and “below” can be replaced with each other.
  • devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as “equipment”, “device”, “circuit”, “network element”, “node”, “function”, “unit”, “section”, “system”, “network”, “chip”, “chip system”, “entity”, “subject”, etc.
  • obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.
  • data, information, etc. may be obtained with the user's consent.
  • each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.
  • FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.
  • a communication system 100 includes communication devices, which may be station devices (STA) 101 and access point devices (AP) 102.
  • STA station devices
  • AP access point devices
  • the following examples will use the communication device as the first device.
  • the site device 101 includes, for example, a wireless communication chip, a wireless sensor, or a wireless communication terminal that supports WiFi communication.
  • the wireless communication terminal is, for example, at least one of a mobile phone, a wearable device, an Internet of Things device that supports WiFi communication, a car with WiFi communication, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, and a wireless terminal device in smart home, but is not limited thereto.
  • VR virtual reality
  • AR augmented reality
  • the station device 101 may be a terminal device or network device equipped with a wireless fidelity (WiFi) chip.
  • the station device 101 may support multiple WLAN standards, such as 802.11ax, 802.11be, 802.11ac, 802.11n, 802.11g, 802.11b, 802.11a, 802.11bf, and 802.11bn, as well as the next generation 802.11 protocol, but is not limited thereto.
  • the access point device 102 can be an access point for a mobile terminal to enter a wired network.
  • the AP is equivalent to a bridge connecting a wired network and a wireless network. Its main function is to connect various wireless network clients together and then connect the wireless network to the Ethernet.
  • the AP can be a terminal device or a network device with a wireless fidelity chip.
  • the AP can support multiple WLAN standards such as 802.11ax, 802.11be, 802.11ac, 802.11n, 802.11g, 802.11b and 802.11a, 802.11bf, 802.11bn, and support the next generation 802.11 protocol, but is not limited to this.
  • the AP and STA may be devices supporting multiple connections, for example, they may be represented as a multi-connection access point device (Access Point Multi-Link Device, AP MLD) and a multi-connection site device (Non-Access Point Multi-Link Device, Non-AP MLD), respectively;
  • AP MLD may represent an access point supporting multi-connection communication functions, and non-AP MLD may represent a site supporting multi-connection communication functions.
  • the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure.
  • Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.
  • the following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or a portion thereof, but are not limited thereto.
  • the entities shown in FIG1 are illustrative only.
  • the communication system may include all or part of the entities shown in FIG1 , or may include other entities outside of FIG1 .
  • the number and form of the entities are arbitrary, and the entities may be physical or virtual.
  • the connection relationships between the entities are illustrative only.
  • the entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.
  • a basic service set (BSS) is a fundamental component of a WLAN.
  • a BSS network consists of station devices with some association within a specific coverage area.
  • IBSS independent basic service set
  • Another more common scenario is that in a BSS network, there is only one central station dedicated to managing the BSS, called an access point device, and all other STAs in the network are associated with it.
  • Other stations in the BSS network that are not central stations are called terminals, also called non-AP STAs.
  • STAs Terminals and non-AP STAs are collectively referred to as STAs.
  • STAs When describing STAs, there is no need to distinguish between APs and non-AP STAs. In the same BSS network, due to distance, transmission power, etc., a STA cannot detect other STAs that are farther away from it, and the two are each other's hidden nodes.
  • FIG2 is a schematic diagram of a channel control method according to an embodiment of the present disclosure. As shown in FIG2 , the method includes:
  • step 201 the first device senses that the primary channel is busy and senses the channel status of the secondary channel; wherein the channel status includes idle or busy.
  • channels are typically divided into primary channels and secondary channels (also known as auxiliary channels or non-primary channels).
  • a secondary channel can contain one or more sub-channels. For example, if the basic bandwidth unit is 20 MHz, when the channel bandwidth is 20 MHz, there is only one primary channel with a bandwidth of 20 MHz. When the channel bandwidth is greater than 20 MHz, one channel with a bandwidth of 20 MHz is the primary channel, and the remaining 20 MHz channels are secondary channels.
  • the primary 20 MHz channel is the common channel of operation for stations that are members of the basic service set (BSS). Stations in the BSS can compete for channel resources on the primary 20 MHz channel.
  • BSS basic service set
  • the primary channel is, for example, the primary 20 MHz channel in FIG3 ; wherein the secondary channel may include one or more sub-channels, for example, the 20 MHz secondary channel and the 40 MHz secondary channel in FIG3 .
  • OBSS interference OBSS busy state
  • PPDUs physical layer protocol data units
  • the primary channel is in the OBSS busy state.
  • communication can be switched to a secondary channel to improve communication system throughput and maximize channel resource utilization. For example, communication can be switched to a 20 MHz secondary channel during time period T1, or to a 40 MHz secondary channel during time period T2.
  • the AP and STA can send PPDUs to each other.
  • the primary and secondary channels can be aggregated for communication to improve the system throughput; as an example, as shown in Figure 4, during the transmission of each frame, the primary channel and at least one secondary channel can be aggregated for transmission.
  • the first device when the first device senses (or listens) that the primary channel is busy, it senses the channel state of the secondary channel; wherein the channel state includes idle or busy, and subsequently determines the processing operation of the random backoff window of the primary channel and/or other secondary channels based on the idle or busy state of the secondary channel.
  • Step 202 Determine a processing operation for the random backoff window of the primary channel and/or other secondary channels according to the channel status of the secondary channel.
  • the communication device will check whether each channel is idle before transmitting data. If the channel is busy, the communication device will delay access and use the random backoff algorithm to avoid conflicts. Waiting until the channel is idle again, thus incurring access delay, is known as the random backoff process.
  • the WLAN device may randomly select a value (referred to as a random number) within the contention window (CW), i.e., [0, CW].
  • DIFS distributed inter-frame space
  • the processing operation of the random backoff window of the main channel and/or other secondary channels is determined according to the channel status of the secondary channel; the processing operation, for example, maintains the count of the random backoff exposure, or generates a new random backoff number; according to the channel status of the secondary channel, the processing operation of the random backoff window of the main channel and/or other secondary channels is clarified, and the communication mechanism of the WLAN device in the primary and secondary channels is improved to meet the transmission requirements of UHR.
  • the first device senses that the primary channel is busy, including:
  • the first device senses that the main channel is busy, performs a random backoff operation, and generates a random number for the main channel and a network allocation vector timer (NAV timer).
  • NAV timer network allocation vector timer
  • the first device senses that the primary channel is busy, performs a random backoff operation on the primary channel, and generates a random number for the primary channel.
  • the random number is used to perform the random backoff process on the primary channel.
  • a NAV timer for the primary channel at the MAC layer is generated.
  • a device can maintain one or more NAV timers, where the NAV timer is set using the duration value in the MAC header of the frame. The NAV timer value decreases over time.
  • a non-zero NAV indicates that the primary channel is busy.
  • a zero NAV indicates that the primary channel is idle.
  • the enhanced distributed channel access (EDCA) access parameters of the secondary channel are the same as the EDCA access parameters of the primary channel.
  • the EDCA access parameters in these secondary channels are the same and may be consistent with the EDCA access parameters in the primary channel.
  • the EDCA in the primary channel is the EDCA parameter carried in the beacon frame broadcast by the AP the last time the STA receives it.
  • sensing the channel state of the secondary channel includes:
  • the secondary channels include at least two, and the secondary channels are sensed sequentially or simultaneously.
  • Sequential sensing means performing sensing in each sub-channel in a time-sharing manner; simultaneous sensing means performing sensing in multiple sub-channels at the same time, and the random backoff numbers generated in each sub-channel are independent of each other.
  • the process of sequential perception includes:
  • the secondary channel sequence numbers may be pre-negotiated between the site device and the access point device, or may be sorted from large to small according to the channel bandwidth, which is not limited in the embodiment of the present disclosure.
  • time-sharing perception is performed on each of the secondary channels in turn according to the preset secondary channel sequence number; and, in any secondary channel, the remaining time value of the NAV timer is 0 and the random backoff number counting is completed, and the channel status of the secondary channel is perceived again.
  • FIG5 shows a second schematic diagram of the channel control method provided by an embodiment of the present disclosure.
  • the method comprises:
  • Step 501 The first device senses that the primary channel is busy and senses the channel status of the secondary channel; wherein the channel status includes idle or busy.
  • step 502 if the Nth secondary channel is busy, a random backoff number is generated for the Nth secondary channel; and before transmitting data, the random backoff number is counted in the primary channel, the N-1th secondary channel, and the Nth secondary channel at the same time; and according to the duration setting of the NAV timer in each channel, the count is performed and a new random backoff number is generated.
  • N is a positive integer.
  • a random backoff is performed on that secondary channel, and a random number (i.e., a random backoff number) is generated.
  • the random backoff number is counted simultaneously on the primary channel, the N-1th secondary channel, and the Nth secondary channel. The backoff number is counted based on the NAV timer setting for each channel, along with the generated random number.
  • Step 503 If the Nth secondary channel is idle, data is transmitted on the Nth secondary channel, the random backoff numbers in the first N-1 secondary channels are released, and the NAV timers of the first N-1 secondary channels are set to 0; and the random backoff numbers in the primary channel are maintained, and the NAV timer count of the primary channel is maintained.
  • the Nth secondary channel sensed in sequence if the channel is sensed to be idle under this secondary channel, data transmission is performed on this secondary channel; the random numbers in the first N-1 secondary channels are released, and the NAV timers of the first N-1 secondary channels are set to 0; at the same time, the random numbers in the main channel are maintained, and the main channel NAV timer keeps counting.
  • the simultaneous sensing process includes:
  • Sensing is performed simultaneously in each of the secondary channels, and a random backoff number is generated and counted for each of the secondary channels.
  • the sensing is performed simultaneously in multiple sub-channels, and the random backoff numbers generated in each sub-channel are independent of each other.
  • FIG6 shows a third schematic diagram of the channel control method provided by an embodiment of the present disclosure.
  • the method comprises:
  • Step 601 The first device senses that the primary channel is busy and senses the channel status of the secondary channel; wherein the channel status includes idle or busy.
  • Step 602 If the first channel is idle, data is transmitted on the first channel, the NAV timer of the main channel and other secondary channels is set to 0, and/or the random backoff number count of the main channel and other secondary channels is maintained.
  • the NAV timer of the main channel and other sub-channels is set to 0, and/or the random backoff number count of the main channel and other sub-channels is maintained.
  • Step 603 If each of the secondary channels is busy, continue sensing on the channel with the smallest random backoff number and/or the NAV timer count is 0.
  • the processing operation of the random backoff window of the main channel and/or other secondary channels is determined according to the channel status of the secondary channel; the processing operation, for example, maintains the count of the random backoff exposure, or generates a new random backoff number; according to the channel status of the secondary channel, the processing operation of the random backoff window of the main channel and/or other secondary channels is clarified, and the communication mechanism of the WLAN device in the primary and secondary channels is improved to meet the transmission requirements of UHR.
  • the processing operation of the random backoff window of the main channel and/or other secondary channels is determined according to the channel status of the secondary channel; the processing operation, for example, maintains the count of the random backoff exposure, or generates a new random backoff number; according to the channel status of the secondary channel, the processing operation of the random backoff window of the main channel and/or other secondary channels is clarified, and the communication mechanism of the WLAN device in the primary and secondary channels is improved to meet the transmission requirements of UHR.
  • the names of information, etc. are not limited to the names described in the embodiments, and terms such as “information”, “message”, “signal”, “signaling”, “report”, “configuration”, “indication”, “instruction”, “command”, “channel”, “parameter”, “domain”, “field”, “symbol”, “codepoint”, “bit”, “data”, “program”, and “chip” can be used interchangeably.
  • terms such as “moment”, “time point”, “time”, and “time position” can be replaced with each other, and terms such as “duration”, “period”, “time window”, “window”, and “time” can be replaced with each other.
  • wireless access scheme and waveform can be used interchangeably.
  • terms such as “certain”, “preset”, “preset”, “setting”, “indicated”, “a certain”, “any”, and “first” can be interchangeable.
  • “Specific A”, “preset A”, “preset A”, “setting A”, “indicated A”, “a certain A”, “any A”, and “first A” can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.
  • the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values (for example, comparison with a predetermined value), but is not limited thereto.
  • “not expecting to receive” may be interpreted as not receiving on time domain resources and/or frequency domain resources. After receiving data, no subsequent processing is performed on the data; "not expected to send” can be interpreted as not sending, or it can be interpreted as sending but not expecting the recipient to respond to the content sent.
  • step 201 can be implemented as an independent embodiment
  • step 202 can be implemented as an independent embodiment
  • step 501 can be implemented as an independent embodiment
  • step 502 can be implemented as an independent embodiment
  • step 503 can be implemented as an independent embodiment
  • step 601 can be implemented as an independent embodiment
  • step 602 can be implemented as an independent embodiment
  • step 603 can be implemented as an independent embodiment
  • the combination of step 501 and step 502 can be implemented as an independent embodiment
  • the combination of step 501 and step 503 can be implemented as an independent embodiment
  • the combination of step 201 and step 202 can be implemented as an independent embodiment
  • the combination of step 601 and step 602 can be implemented as an independent embodiment
  • the combination of step 601 and step 603 can be implemented as an independent embodiment.
  • FIG7 is a fourth flow chart of a channel control method according to an embodiment of the present disclosure.
  • the above method includes:
  • Step 701 The first device senses that the primary channel is busy and senses the channel status of the secondary channel; wherein the channel status includes idle or busy;
  • Step 702 Determine a processing operation for the random backoff window of the primary channel and/or other secondary channels according to the channel status of the secondary channel.
  • the first device senses that the primary channel is busy, including:
  • the first device senses that the main channel is busy, performs a random backoff operation, and generates a random backoff number and NAV timer for the main channel.
  • sensing the channel state of the secondary channel includes:
  • the secondary channels include at least two, and the secondary channels are sensed sequentially or simultaneously.
  • the sequentially sensing the secondary channels includes:
  • the NAV timer under the secondary channel is 0, and the random backoff number counting is completed, and the channel status of the secondary channel is sensed again.
  • determining, based on the channel state of the secondary channel, a processing operation for a random backoff window of the primary channel and/or other secondary channels includes:
  • a random backoff number is generated for the Nth secondary channel; and before transmitting data, the random backoff number is counted in the primary channel, the N-1th secondary channel, and the Nth secondary channel at the same time; and according to the duration setting of the NAV timer in each channel, the count is performed and a new random backoff number is generated.
  • the Nth secondary channel is idle, data is transmitted on the Nth secondary channel, the random backoff numbers in the first N-1 secondary channels are released, and the NAV timers of the first N-1 secondary channels are set to 0; and the random backoff number in the primary channel is maintained, and the NAV timer count of the primary channel is maintained.
  • the simultaneously sensing the secondary channels includes:
  • Sensing is performed simultaneously in each of the secondary channels, and a random backoff number is generated and counted for each of the secondary channels.
  • determining, based on the channel state of the secondary channel, a processing operation for a random backoff window of the primary channel and/or other secondary channels includes:
  • the NAV timers of the primary channel and other secondary channels are set to 0, and/or the random backoff counts of the primary channel and other secondary channels are maintained;
  • the EDCA access parameter of the secondary channel is the same as the EDCA access parameter of the primary channel.
  • step 701 may be implemented as an independent embodiment
  • step 702 may be implemented as an independent embodiment
  • the combination of step 701 and step 702 may be implemented as an independent embodiment, but is not limited thereto.
  • the embodiments of the present disclosure further provide an apparatus for implementing any of the above methods.
  • an apparatus comprising units or modules for implementing each step performed by a terminal in any of the above methods.
  • another apparatus comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.
  • a network device e.g., an access network device, a core network function node, a core network device, etc.
  • the division of the various units or modules in the above device is only a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated.
  • the units or modules in the device can be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and instructions are stored in the memory.
  • the processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device.
  • CPU central processing unit
  • microprocessor a microprocessor
  • the units or modules in the device may be implemented in the form of hardware circuits, and the functions of some or all of the units or modules may be implemented by designing the hardware circuits.
  • the above-mentioned hardware circuits may be understood as one or more processors.
  • the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), and the functions of some or all of the above-mentioned units or modules may be implemented by designing the logical relationship between the components in the circuit.
  • ASIC application-specific integrated circuit
  • the above-mentioned hardware circuit may be implemented by a programmable logic device (PLD).
  • PLD programmable logic device
  • FPGA field programmable gate array
  • it may include a large number of logic gate circuits, and the connection relationship between the logic gate circuits may be configured through a configuration file, thereby implementing the functions of some or all of the above-mentioned units or modules. All units or modules of the above-mentioned devices may be implemented entirely by the processor calling software, or entirely by hardware circuits, or partially by the processor calling software, and the remaining part by hardware circuits.
  • the processor is a circuit with signal processing capabilities.
  • the processor may be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP).
  • the processor may implement certain functions through the logical relationship of a hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable.
  • the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA.
  • ASIC application-specific integrated circuit
  • PLD programmable logic device
  • the process of the processor loading a configuration document to implement the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules.
  • it can also be a hardware circuit designed for artificial intelligence, which can be understood as ASIC, such as the Neural Network Processing Unit (NPU), the Tensor Processing Unit (TPU), the Deep Learning Processing Unit (DPU), etc.
  • FIG8 is a schematic diagram of the structure of a communication device according to an embodiment of the present disclosure.
  • the communication device 800 may include at least one of a sensing module 801 and a determining module 802 .
  • the above-mentioned perception module 801 is used by the first device to perceive that the main channel is busy and perceive the channel status of the secondary channel; wherein the channel status includes idle or busy; the sending module 802 is used to determine the processing operation of the random backoff window of the main channel and/or other secondary channels based on the channel status of the secondary channel.
  • the determining module 801 is configured to execute at least one of the communication steps (e.g., step 201, step 501, step 601, step 701, but not limited thereto) performed by the first device in any of the above methods, which are not described in detail here.
  • the sending module 802 is configured to execute at least one of (e.g., step 202, step 502, step 503, step 602, step 603, step 702, but not limited thereto), which are not described in detail here.
  • Figure 9 is a schematic diagram of the structure of a terminal 900 (e.g., user equipment) proposed in an embodiment of the present disclosure.
  • Terminal 900 can be a chip, chip system, or processor that supports a network device implementing any of the above methods, or a chip, chip system, or processor that supports a terminal implementing any of the above methods.
  • Terminal 900 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.
  • terminal 900 includes one or more processors 901.
  • Processor 901 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data
  • the central processing unit can be used to control communication devices (such as base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data.
  • Terminal 900 is used to perform any of the above methods.
  • the terminal 900 further includes one or more memories 902 for storing instructions.
  • the memories 902 may be located outside the terminal 900.
  • the terminal 900 further includes one or more transceivers 904.
  • the transceiver 904 executes the communication steps such as sending and/or receiving in the above method, and the processor 901 executes at least one of the other steps (for example, step 201, step 202, step 501, step 502, step 503, step 601, step 602, step 603, step 701, step 702, but not limited to these).
  • a transceiver may include a receiver and/or a transmitter.
  • the receiver and transmitter may be separate or integrated.
  • transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.
  • terminal 900 may include one or more interface circuits 903.
  • interface circuit 903 is connected to memory 902.
  • Interface circuit 903 may be configured to receive signals from memory 902 or other devices, and may be configured to send signals to memory 902 or other devices.
  • interface circuit 903 may read instructions stored in memory 902 and send the instructions to processor 901.
  • the terminal 900 described in the above embodiment may be a communication device such as a user device, but the scope of the terminal 900 described in the present disclosure is not limited thereto, and the structure of the terminal 900 may not be limited by FIG. 9 .
  • the communication device may be an independent device or may be part of a larger device.
  • the communication device may be: (1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.
  • FIG10 is a schematic diagram of the structure of a chip 1000 according to an embodiment of the present disclosure. If the terminal 900 is a chip or a chip system, reference may be made to the schematic diagram of the structure of the chip 1000 shown in FIG10 , but the present disclosure is not limited thereto.
  • the chip 1000 includes one or more processors 1001 , and the chip 1000 is configured to execute any of the above methods.
  • chip 1000 further includes one or more 1003.
  • interface circuit 1003 is connected to memory 1002.
  • Interface circuit 1003 can be used to receive signals from memory 1002 or other devices, and interface circuit 1003 can be used to send signals to memory 1002 or other devices.
  • interface circuit 1003 can read instructions stored in memory 1002 and send the instructions to processor 1001.
  • the interface circuit 1003 performs at least one of the communication steps such as sending and/or receiving in the above method, and the processor 1001 performs at least one of the other steps (for example, step 201, step 202, step 501, step 502, step 503, step 601, step 602, step 603, step 701, step 702, but not limited to this).
  • interface circuit interface circuit
  • transceiver pin transceiver
  • the chip 1000 further includes one or more memories 1002 for storing instructions. Alternatively, all or part of the memory 1002 may be external to the chip 1000.
  • the present disclosure also provides a storage medium having instructions stored thereon.
  • the terminal 900 executes any of the above methods.
  • the storage medium is an electronic storage medium.
  • the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices.
  • the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a transient storage medium.
  • the present disclosure also provides a program product, which, when executed by the terminal 900, enables the terminal 900 to perform any of the above methods.
  • the program product is a computer program product.
  • the present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

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

Abstract

Les modes de réalisation de la présente divulgation concernent un procédé de communication de canal, un dispositif de communication et un système de communication. Le procédé de commande de canal comprend les étapes suivantes : lorsqu'il est détecté qu'un canal primaire est occupé, un premier dispositif détecte un état de canal d'un canal secondaire, l'état de canal comprenant un état inactif ou un état occupé ; et sur la base de l'état de canal du canal secondaire, déterminer une opération de traitement sur une fenêtre d'attente aléatoire du canal primaire et/ou d'autres canaux secondaires. Un premier dispositif détecte un état de canal d'un canal secondaire, puis détermine une opération de traitement sur une fenêtre d'attente aléatoire d'un canal primaire et/ou d'autres canaux secondaires sur la base de l'état de canal du canal secondaire, l'opération de traitement étant, par exemple, le maintien du comptage de la fenêtre d'attente aléatoire, ou la génération d'un nouveau nombre d'attente aléatoire ; et sur la base de l'état de canal du canal secondaire, l'opération de traitement sur la fenêtre d'attente aléatoire du canal primaire et/ou d'autres canaux secondaires est rendue claire, et le mécanisme de communication d'un dispositif WLAN dans le canal primaire et le canal secondaire est amélioré, de façon à satisfaire aux exigences de transmission UHR.
PCT/CN2024/074762 2024-01-30 2024-01-30 Procédé de commande de canal, dispositif de communication et système de communication Pending WO2025160760A1 (fr)

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