WO2024087030A1 - 无线通信的方法、接入点设备和站点设备 - Google Patents

无线通信的方法、接入点设备和站点设备 Download PDF

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Publication number
WO2024087030A1
WO2024087030A1 PCT/CN2022/127457 CN2022127457W WO2024087030A1 WO 2024087030 A1 WO2024087030 A1 WO 2024087030A1 CN 2022127457 W CN2022127457 W CN 2022127457W WO 2024087030 A1 WO2024087030 A1 WO 2024087030A1
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Prior art keywords
twt
information
bss
access point
point device
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PCT/CN2022/127457
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English (en)
French (fr)
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朱德
卢刘明
侯蓉晖
罗朝明
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Oppo广东移动通信有限公司
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Priority to PCT/CN2022/127457 priority Critical patent/WO2024087030A1/zh
Publication of WO2024087030A1 publication Critical patent/WO2024087030A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10—Dynamic resource partitioning

Definitions

  • the embodiments of the present application relate to the field of communications, and specifically to a wireless communication method, an access point device, and a station device.
  • TWT target wake-up time
  • the restricted target wake time (R-TWT) is introduced, which can use enhanced media access protection and resource reservation mechanisms to deliver delay-sensitive services.
  • R-TWT restricted target wake time
  • the present application provides a wireless communication method, access point device and site device, which are conducive to reducing interference within an established R-TWT.
  • a method for wireless communication including: a first access point device receives first information sent by a first site device, the first information is used to indicate information of at least one first basic service set BSS, transmission within the at least one first BSS may interfere with transmission during a service period SP of a restricted target wake-up time R-TWT established between the first site device and the first access point device, and the at least one first BSS is an overlapping basic service set OBSS of the BSS where the first access point device and the first site device are located; the first access point device establishes an R-TWT between the first access point device and the first site device based on the first information.
  • a method for wireless communication including: a first site device sends first information to a first access point device, the first information being used to indicate information of at least one first basic service set BSS, transmission within the at least one first BSS may interfere with transmission during a service period SP of a restricted target wake-up time R-TWT established between the first site device and the first access point device, and the at least one first BSS is an overlapping basic service set OBSS of the BSS where the first access point device and the first site device are located.
  • an access point device configured to execute the method in the first aspect or each implementation manner thereof.
  • the access point device includes a functional module for executing the method in the above first aspect or each implementation manner thereof.
  • a site device configured to execute the method in the second aspect or its respective implementation manners.
  • the site equipment includes a functional module for executing the method in the above second aspect or its various implementations.
  • an access point device including a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect or its implementation manners.
  • a site device comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect or its implementation manners.
  • a chip is provided for implementing the method in any one of the first to second aspects or in each of their implementations.
  • the chip includes: a processor, which is used to call and run a computer program from a memory, so that a device equipped with the device executes a method as described in any one of the first to second aspects or their respective implementations.
  • a computer-readable storage medium for storing a computer program, wherein the computer program enables a computer to execute the method of any one of the first to second aspects or any of their implementations.
  • a computer program product comprising computer program instructions, wherein the computer program instructions enable a computer to execute the method in any one of the first to second aspects or any of their implementations.
  • a computer program which, when executed on a computer, enables the computer to execute the method in any one of the first to second aspects or in each of their implementations.
  • the site device can report the interference BSS information (i.e., OBSS information) of the site device to the access point device. Further, the access point device can establish an R-TWT between the site device and the access point device based on the R-TWT established in the interfering BSS, which is beneficial to reducing the interference of the R-TWT established in the interfering BSS on the transmission within the R-TWT between the site device and the access point device.
  • the interference BSS information i.e., OBSS information
  • FIG1 is a schematic diagram of a communication system architecture provided in an embodiment of the present application.
  • FIG2 is a format diagram of a TWT element provided in an embodiment of the present application.
  • FIG. 3 is a format diagram of the Control field in a TWT element provided in an embodiment of the present application.
  • Figure 4 is a schematic diagram of a Broadcast TWT Parameter set field provided in an embodiment of the present application.
  • Figure 5 is a schematic diagram of a Request Type field provided in an embodiment of the present application.
  • Figure 6 is a schematic diagram of a Broadcast TWT Info field provided in an embodiment of the present application.
  • Figure 7 is a schematic diagram of the process of establishing and using an R-TWT provided in an embodiment of the present application.
  • FIG8 is a schematic diagram of an application scenario of an embodiment of the present application.
  • FIG. 9 is a schematic flowchart of a wireless communication method provided in an embodiment of the present application.
  • FIG. 10 is a schematic diagram of the format of an OBSS information list field provided in an embodiment of the present application.
  • FIG. 11 is a schematic diagram of the format of another OBSS information list field provided in an embodiment of the present application.
  • FIG. 12 is a schematic diagram of the format of another OBSS information list field provided in an embodiment of the present application.
  • Figure 13 is a schematic diagram of a method for obtaining OBSS R-TWT information provided in an embodiment of the present application.
  • Figure 14 is a schematic diagram of another method for obtaining OBSS R-TWT information provided in an embodiment of the present application.
  • Figure 15 is a schematic diagram of another method for obtaining OBSS R-TWT information provided in an embodiment of the present application.
  • Figure 16 is a schematic diagram of another method for obtaining OBSS R-TWT information provided in an embodiment of the present application.
  • FIG. 17 is a schematic diagram of establishing R-TWT according to an embodiment of the present application.
  • FIG18 is a schematic diagram of establishing R-TWT according to an embodiment of the present application.
  • FIG19 is a schematic diagram of establishing R-TWT according to an embodiment of the present application.
  • FIG. 20 is a schematic diagram of a silent instance according to an embodiment of the present application.
  • Figure 21 is a schematic diagram of R-TWT grouping revenue according to an embodiment of the present application.
  • FIG. 22 is a schematic block diagram of an access point device provided according to an embodiment of the present application.
  • Figure 23 is a schematic block diagram of a site device provided according to an embodiment of the present application.
  • Figure 24 is a schematic block diagram of a communication device provided according to an embodiment of the present application.
  • Figure 25 is a schematic block diagram of a chip provided according to an embodiment of the present application.
  • Figure 26 is a schematic block diagram of a communication system provided according to an embodiment of the present application.
  • WLAN Wireless Local Area Networks
  • WiFi Wireless Fidelity
  • the communication system 100 may include an access point (AP) 110 and a station (STA) 120 that accesses a network through the access point 110.
  • AP access point
  • STA station
  • AP is also called AP STA, which means that in a sense, AP is also a STA.
  • STA is also called non-AP STA.
  • the communication in the communication system 100 may be communication between an AP and a non-AP STA, communication between a non-AP STA and a non-AP STA, or communication between a STA and a peer STA, wherein a peer STA may refer to a device that communicates with a STA on a peer-to-peer basis, for example, a peer STA may be an AP or a non-AP STA.
  • AP is equivalent to a bridge connecting wired network and wireless network. Its main function is to connect various wireless network clients together and then connect the wireless network to Ethernet.
  • AP devices can be terminal devices with WiFi chips (such as mobile phones) or network devices (such as routers).
  • the role of STA in the communication system is not absolute.
  • the mobile phone when a mobile phone is connected to a router, the mobile phone is a non-AP STA.
  • the mobile phone plays the role of an AP.
  • APs and non-AP STAs can be devices used in Internet of Vehicles, IoT nodes and sensors in the Internet of Things (IoT), smart cameras, smart remote controls, smart water and electricity meters in smart homes, and sensors in smart cities.
  • IoT Internet of Things
  • non-AP STA can support 802.11be.
  • Non-AP STA can also support various current and future 802.11 family wireless local area networks (WLAN) standards such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b and 802.11a.
  • WLAN wireless local area networks
  • the AP may be a device supporting the 802.11be standard.
  • the AP may also be a device supporting various current and future 802.11 family WLAN standards such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b and 802.11a.
  • STA can be a mobile phone (Mobile Phone), tablet computer (Pad), computer, virtual reality (VR) device, augmented reality (AR) device, wireless device in industrial control (industrial control), set-top box, wireless device in self-driving, vehicle-mounted communication equipment, wireless device in remote medical, wireless device in smart grid (smart grid), wireless device in transportation safety (transportation safety), wireless device in smart city (smart city) or wireless device in smart home (smart home), wireless communication chip/ASIC/SOC/etc. that supports WLAN or WiFi technology.
  • the frequency bands supported by WLAN technology may include but are not limited to: low frequency bands (eg, 2.4 GHz, 5 GHz, 6 GHz) and high frequency bands (eg, 60 GHz).
  • low frequency bands eg, 2.4 GHz, 5 GHz, 6 GHz
  • high frequency bands eg, 60 GHz
  • Figure 1 exemplarily shows an AP STA and two non-AP STAs.
  • the communication system 100 may include multiple AP STAs and other numbers of non-AP STAs, which is not limited to the embodiments of the present application.
  • the device with communication function in the network/system in the embodiment of the present application can be called a communication device.
  • the communication device may include an access point 110 and a site 120 with communication function, and the access point 110 and the site 120 may be the specific devices described above, which will not be repeated here; the communication device may also include other devices in the communication system 100, such as other network entities such as a network controller and a gateway, which is not limited in the embodiment of the present application.
  • the "indication" mentioned in the embodiments of the present application can be a direct indication, an indirect indication, or an indication of an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association relationship between A and B.
  • corresponding may indicate a direct or indirect correspondence between two items, or an association relationship between the two items, or a relationship of indication and being indicated, configuration and being configured, etc.
  • pre-defined can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in a device (for example, including access points and stations), and the present application does not limit the specific implementation method.
  • pre-defined can refer to what is defined in the protocol.
  • TWT broadcast target wake-up time
  • TWT is a timed wake-up energy-saving mode proposed in 802.11ax.
  • TWT proposes that STAs only wake up during a predefined service period (SP) to interact with the AP, and continue to sleep after the SP ends.
  • SP service period
  • Broadcast TWT is a TWT energy-saving mode managed by the AP.
  • Broadcast TWT there are interactive actions of joining and leaving a group.
  • the STA needs to apply to the AP to join the group before it can use the Broadcast TWT.
  • the interactive action of adding a group is completed by carrying a TWT element in the management frame interacting with the AP, where the TWT element is used to carry the Broadcast TWT parameter information corresponding to the Broadcast TWT requested to join.
  • the STA completes the group addition, the STA will work according to the most recently received TWT service period (Service Period, SP).
  • Service Period Service Period
  • TWT scheduled STA TWT Scheduled STA
  • AP TWT Scheduling AP
  • TWT SP TWT SP is announced by the AP.
  • the AP will announce the TWT SP that has been established between the AP and its associated STAs in each beacon frame.
  • STA wakes up after TWT SP starts AP will send a broadcast trigger frame to find out which STAs are awake and send data frames to them.
  • STA finishes sending STA goes into sleep mode until the next Broadcast TWTSP arrives.
  • FIG. 2 is a schematic diagram of the format of a TWT element.
  • the TWT element includes the following fields:
  • the Element ID field, the Length field, the Control field, and the TWT Parameter Information field are used to carry TWT parameter information.
  • the number of bytes corresponding to the above fields are: 1, 1, 1, and variable.
  • FIG3 is a schematic format diagram of the Control field in the TWT element.
  • Control field may include the following fields:
  • NDP Neighbor Discovery Protocol
  • NDP Paging Indicator NDP Paging Indicator
  • Responder PM Mode NWT Information Frame Disable field
  • Wake Duration Unit NWT Information Frame Disable field
  • Link ID Bitmap Present field Link ID Present, or Link ID Present
  • the high bit (i.e., B3) of the Negotiation Type field is a Broadcast field, which is used to indicate whether the TWT element is a Broadcast TWT element.
  • the Broadcast field is set to 1, indicating that the TWT element is a Broadcast TWT element.
  • the negotiation Type field value is 2 for broadcast TWT announcements, and the value is 3 for broadcast TWT member management.
  • the TWT Parameter Information field in the TWT element is used to carry Broadcast TWT parameter information.
  • the Wake Duration Unit field represents the minimum time unit for setting the TWT length (Duration).
  • the Wake Duration Unit field is set to 0, indicating that the minimum time unit is 256 microseconds; the Wake Duration Unit field is set to 1, indicating that the minimum time unit is TU.
  • the TWT Parameter Information field in the TWT element may contain one or more broadcast TWT parameter set fields.
  • Figure 4 is an exemplary format diagram of the Broadcast TWT Parameter set field.
  • the Broadcast TWT Parameter set field includes at least one of the following fields:
  • Request type field target wake time field, standard minimum TWT wake duration field, TWT wake interval mantissa field, broadcast TWT information field, restricted TWT traffic information field (Restricted TWT Traffic Info) (optional).
  • the Request Type field includes at least one of the following fields:
  • TWT request (TWT Request) field
  • TWT setup command (TWT Setup Command) field
  • Trigger Trigger
  • last broadcast parameter setting (Last Broadcast Parameter Set) field
  • flow type (Flow Type) field
  • broadcast TWT recommendation (Broadcast TWT Recommendation)
  • TWT wake-up interval index (TWT Wake Interval Exponent)
  • the TWT Request field is set to 1, indicating that the STA sending the frame carrying the TWT element is a TWT scheduled STA; it is set to 0, indicating that the STA sending the frame carrying the TWT element is a TWT scheduling AP.
  • the TWT Setup Command field the type of TWT establishment command used when the STA and the AP negotiate TWT parameters.
  • the TWT Setup Command field value of 0 indicates the Request TWT type, which is only valid when the TWT Request field value is 1, indicating that the TWT scheduled STA requests to join the TWT.
  • the TWT Setup Command field value of 1 indicates the Suggest TWT type, which is only valid when the TWT Request field value is 1.
  • the TWT Setup Command field value of 2 indicates the Demand TWT type, which is only valid when the TWT Request field value is 1.
  • the TWT Setup Command field value of 2 indicates the Accept TWT type, which is only valid when the TWT Request field value is 0, indicating that the TWT scheduling AP accepts the TWT parameters indicated by the TWT Scheduled STA in the TWT element. It can also be used for unsolicited TWT responses.
  • the Trigger field is used to indicate whether a Trigger frame needs to be sent. For example, if it is set to 1, it means that a trigger frame is sent at least once in the TWT SP.
  • the Last Broadcast Parameter Set field is used to indicate whether the Broadcast TWT Parameter set field is the last Broadcast TWT Parameter set field in the TWT Parameter Information field.
  • the Broadcast TWT Recommendation field indicates recommended values for frame types sent by TWT scheduled STAs and scheduling APs during TWT SP.
  • the Broadcast TWT element when the Broadcast TWT Recommendation field in a TWT element is equal to 4, the Broadcast TWT element is an R-TWT element.
  • the TWT parameter information carried in the TWT element is called R-TWT parameter information.
  • the TWT Wake Interval Mantissa field and the TWT Wake Interval Exponent field are used to determine a TWT wake-up interval (TWT Wake Interval), which represents the average time that a TWT scheduled STA passes between consecutive TWT SPs.
  • TWT Wake Interval (TWT Wake Interval Mantissa) * 2 ⁇ (TWT Wake Interval Exponent) microseconds.
  • Target Wake Time field When the TWT element is sent by a TWT scheduled STA and the TWT Setup command field is Suggest TWT or Demand TWT, the meaning of the Target Wake Time field is an unsigned integer corresponding to the time synchronization function (TSF) time (i.e., the start time of the TWT SP) that the STA requests to wake up.
  • TSF time synchronization function
  • the Nominal Minimum TWT Wake Duration field represents the minimum time of the TWT SP required by the TWT scheduled STA in units of the value indicated by the Wake Duration Unit field.
  • the Broadcast TWT Info field includes at least one of the following fields:
  • the Broadcast TWT ID field together with the AP's MAC address, identifies the unique Broadcast TWT.
  • the Broadcast TWT Persistence field is used to indicate the number of TBTTs during which the Broadcast TWT parameter information exists (or is valid).
  • the number of beacon intervals during which the Broadcast TWT parameter information exists is equal to the value of the Broadcast TWT Persistence field plus 1.
  • a value of 255 indicates that the TWT exists for a long time until the TWT is terminated by other means. Other values indicate that the TWT exists for a limited time.
  • each Broadcast TWT is uniquely identified by a ⁇ Broadcast TWT ID, MAC address> tuple, where the Broadcast TWT ID is the value of the Broadcast TWT ID field, and the Broadcast TWT ID is greater than 0, and the MAC address is the MAC address of the TWT scheduling AP.
  • a Broadcast TWT can be established as follows:
  • Method 1 STA actively initiates a Broadcast TWT establishment request to the AP by including a TWT element with the negotiation type field equal to 3 in the Association/Reassociation Request or TWT Setup frame.
  • the Broadcast TWT parameter set field in the TWT element indicates the Broadcast TWT ID corresponding to the Broadcast TWT that the STA requests to join.
  • the AP can initiate an unsolicited TWT response.
  • the AP can include a TWT element with a negotiation type field equal to 3 in an Association/Reassociation Response or a TWT setup frame to allocate a Broadcast TWT to the receiving STA.
  • the receiving STA supports Broadcast TWT. For example, when the STA reports capability information to the AP, the Broadcast TWT Support field in the capability information is set to 1 (indicating that the STA supports Broadcast TWT).
  • a TWT scheduling AP may announce a Broadcast TWT established in a Basic Service Set (BSS) in which the AP is located, namely, a Broadcast TWT schedule.
  • BSS Basic Service Set
  • the Broadcast TWT schedule may be announced in a frame of a TWT element with the negotiation type field set to 2, for example, through a Beacon frame.
  • the TWT scheduling AP may include a High Efficiency (HE) AP that supports Broadcast TWT (e.g., dot11TWTOptionActivated is equal to true), and the TWT scheduled STA may be a non-AP HE STA.
  • the non-AP HE STA may send HE capability information to the AP, where the HE capability information is carried in a HE capability element.
  • the HE capability element includes a Broadcast TWT Support field, and the Broadcast TWT Support field is set to 1 to indicate that the non-AP HE STA supports Broadcast TWT.
  • the non-AP HE STA may receive a frame carrying a Broadcast TWT element sent by the HE AP that is the TWT scheduling AP.
  • R-TWT can use enhanced media access protection and resource reservation mechanisms to deliver delay-sensitive traffic. That is, R-TWT can be considered as a new Broadcast TWT Recommendation defined on the basis of TWT.
  • the Broadcast TWT parameter set carried in the Broadcast TWT parameter set field is the R-TWT parameter set.
  • the Broadcast TWT parameter set field is the R-TWT parameter set field.
  • a TWT element when a TWT element includes only an R-TWT parameter set field, the TWT element is also called an R-TWT element.
  • the AP when an R-TWT is established or modified in the BSS where the AP is located, the AP can announce the R-TWT schedule.
  • a management frame (such as a beacon frame) includes a Broadcast TWT element, which is used to announce the updated R-TWT scheduling information.
  • the establishment of TWT can be achieved by exchanging TWT setup frames (TWT Setup frame) between AP and STA.
  • TWT setup frames TWT Setup frame
  • STA can send a TWT setup request frame to AP to request the establishment of TWT SP
  • AP can reply to STA with a TWT setup response frame to indicate the status of the requested TWT SP, such as whether to agree to the establishment of the TWT SP or reject the establishment of the TWT SP.
  • FIG7 is a schematic diagram of the process of establishing and using an R-TWT.
  • STA1 may send an R-TWT request frame to AP to request the establishment of an R-TWT between AP and STA1, wherein the R-TWT request frame includes the R-TWT parameter set requested by STA1 to establish, and the AP replies with an R-TWT response frame to agree to the establishment of the R-TWT.
  • STA1 is referred to as "R-TWT Scheduled STA" and AP is referred to as "R-TWT Scheduling AP".
  • the R-TWT established between STA1 and the AP and the R-TWT established between STA2 and the AP can be the same, that is, STA1 can join the R-TWT established between STA2 and the AP, which is recorded as R-TWT 1.
  • the R-TWT request frame may include an R-TWT element, and the R-TWT element is used to carry the R-TWT parameter set requested to be established by STA1.
  • the AP sends a Beacon frame at the TBTT time.
  • the Beacon includes an R-TWT element, in which R-TWT 1 is indicated, for example, wherein during the broadcast of R-TWT 1 SP, the AP sends downlink delay-sensitive traffic to the R-TWT scheduled STA.
  • STA 1 and STA 2 receive the Beacon.
  • STA 1 and STA 2 receive downlink data sent by the AP in the subsequent R-TWT 1 SP, such as a downlink multi-user physical layer protocol data unit (DL MU PPDU), and further reply a block confirmation (Block Ack, BA) frame to the AP.
  • DL MU PPDU downlink multi-user physical layer protocol data unit
  • Table 1 is an example of the frame format of the TWT establishment frame.
  • the format of the TWT element refers to the relevant descriptions in Figures 2 to 6.
  • STA channel access within the R-TWT SP needs to follow certain rules.
  • a STA holding a transmission opportunity needs to release the TXOP before the start time of the R-TWT SP announced by the associated AP, or in other words, end the TXOP.
  • the STA is a STA that supports R-TWT (for example, dot11RestrictedTWTOptionImplemented is set to true), such as a non-AP Extreme High Throughput (EHT) STA that supports R-TWT.
  • EHT Extreme High Throughput
  • STAs using the same R-TWT can be considered to belong to one group.
  • STAs that are not in a group need to back off within the R-TWT SP used by other groups.
  • the R-TWT established in a BSS includes R-TWT 1 and R-TWT 2, among which STA1 and STA2 belong to the group corresponding to R-TWT 1, and STA3 and STA4 belong to the group corresponding to R-TWT 2.
  • STA3 and STA4 need to back off in R-TWT 1 SP, that is, no data transmission
  • STA1 and STA2 need to back off in R-TWT 2 SP, that is, no data transmission.
  • the data transmission of devices in other BSSs may also interfere with the data transmission of devices in this BSS in the R-TWT SP.
  • AP1 is associated with STA11 and STA12
  • AP2 is associated with STA21 and STA22.
  • R-TWT an R-TWT is established between AP1 and STA11, denoted as R-TWT 1
  • STA12 needs to actively end the TXOP before the start of R-TWT 1 SP to avoid interfering with STA11's data transmission within the R-TWT 1 SP.
  • the devices in the BSS where AP2 is located can still compete for channels normally. Therefore, the data transmission of the devices in the BSS where AP2 is located during this period may interfere with the delay-sensitive data transmission of STA11. For example, if STA22 holds TXOP and is communicating with AP2 during the R-TWT 1 SP, it will interfere with STA11's data reception.
  • FIG. 9 is a schematic interaction diagram of a wireless communication method 200 according to an embodiment of the present application. As shown in FIG. 9 , the method 200 includes the following contents:
  • the first access point device receives first information sent by the first site device, where the first information is used to indicate information of at least one first BSS, and transmission within at least one first BSS may interfere with transmission during the SP period of the R-TWT established between the first site device and the first access point device.
  • the first access point device may establish an R-TWT between the first access point device and the first site device based on the first information.
  • the R-TWT between the first AP and the first STA established according to the first information and the R-TWT established within the at least one first BSS do not overlap in time.
  • the R-TWT between the first AP and the first STA established according to the first information is recorded as the target R-TWT, and the R-TWT established in at least one first BSS is recorded as the OBSS R-TWT.
  • the target R-TWT and the OBSS R-TWT do not overlap in time may refer to the SP of the target R-TWT and the SP of the OBSS R-TWT do not overlap in time.
  • the other two R-TWTs or more R-TWTs do not overlap in time may be similarly interpreted.
  • the first site device is a non-AP STA (non-AP STA), or a first STA, a first non-AP STA.
  • the first access point device is an AP STA, or a first AP, a first AP STA.
  • access point devices and APs refer to AP STAs
  • station devices and STAs refer to non-AP STAs.
  • the first AP and the first STA may be multi-link devices (MLD).
  • MLD multi-link devices
  • the first information can be used for establishing R-TWT between multi-link devices.
  • the first AP and the first STA may be single-link devices.
  • the first AP and the first STA can be used for establishing R-TWT between single-link devices.
  • the first access point device is an access point device associated with the first station device, that is, the first access point device and the first station device belong to the same BSS.
  • the at least one first BSS may be an Overlapping Basic Service Set (OBSS) of the BSS where the first AP is located. That is, the first BSS and the BSS where the first AP is located overlap.
  • OBSS Overlapping Basic Service Set
  • the first AP and/or the first STA are in an OBSS.
  • the first AP is an OBSS device and/or the first STA is an OBSS device.
  • the OBSS device may refer to a device in an OBSS, which may receive signals in multiple BSSs and may be interfered by signals in other BSSs other than the BSS where the OBSS device is located.
  • the BSS where the first AP is located is the target BSS, and the first AP is located in the overlapping area of the first BSS and the target BSS (that is, the first AP is an OBSS device).
  • the first AP can receive data transmission between the AP in the first BSS and its associated STA, and the data transmission may interfere with the transmission between the first AP and the first STA.
  • the BSS where the first AP is located is the target BSS
  • the first STA is located in the overlapping area of the first BSS and the target BSS (that is, the first STA is an OBSS device).
  • the first STA can receive data transmission between the AP in the first BSS and the STA associated with it, and the data transmission may interfere with the transmission between the first AP and the first STA.
  • the BSS where the first AP is located is the target BSS, and the first STA and the first AP are both located in the overlapping area of the first BSS and the target BSS (that is, the first STA and the first AP are both OBSS devices). Then, the first STA and the first AP can receive data transmission between the AP in the first BSS and the STA associated with it, and the data transmission may interfere with the transmission between the first AP and the first STA.
  • backing off the established R-TWT in the first BSS may help reduce the interference of the transmission in the first BSS with the transmission during the SP period of the R-TWT between the first AP and the first STA.
  • the at least one first BSS can be considered as an interfering BSS or OBSS of the first STA, that is, the first STA is located within the first BSS and the target BSS, and therefore, the transmission within the first BSS may interfere with the transmission between the first STA and the first AP).
  • the at least one first BSS is an interfering BSS corresponding to the R-TWT between the first STA and the first AP, that is, the transmission within the at least one first BSS may interfere with the transmission during the SP period of the R-TWT established between the first STA and the first AP.
  • the first STA may determine the interfering BSS of the first STA by receiving a frame (eg, a beacon frame).
  • a frame eg, a beacon frame
  • the first STA may regard the BSS as an interfering BSS of the first STA.
  • the first STA can measure the signal sent by the AP (such as the preamble code signal). If the received signal strength is greater than the first threshold and the signal does not come from the AP associated with the first STA, it can be determined that the BSS where the AP sending the signal is located is the interfering BSS of the first STA.
  • the received signal strength here can be a received signal strength indication (Received Signal Strength Indication, RSSI).
  • RSSI Received Signal Strength Indication
  • the first information includes at least one of the following:
  • Identification ID information of the at least one first BSS e.g., BSS ID
  • color information of the first BSS e.g., BSS Color
  • the first station device receives strength information of a signal sent by an access point device in the at least one first BSS.
  • the established R-TWT information within the at least one first BSS may include specific R-TWT parameters, such as the TWT parameters illustrated in Figures 4 to 6. As an example, the value of the target wake-up time, the standard minimum TWT wake-up length, the TWT wake-up time interval, etc.
  • the R-TWT parameters are used to determine the time information of the SP of the R-TWT, such as the start time, duration, and period.
  • the established R-TWT information within the at least one first BSS may include identification information corresponding to the R-TWT parameters, such as an R-TWT ID, wherein the R-TWT ID and the AP's MAC address jointly identify a unique R-TWT.
  • the first STA may not need to carry specific R-TWT parameters, which is beneficial to reducing signaling overhead.
  • the reception strength information of the first STA to the signal sent by the AP in the at least one first BSS may refer to the reception strength information of the signal sent by the first STA to the AP in the first BSS, for example, RSSI information.
  • the reception strength of the signal sent by the first STA to the AP in the first BSS may reflect the interference of the signal in the first BSS to the first STA. A large reception strength may be considered to have a large interference to the first STA, and vice versa.
  • combining the established R-TWT in the first BSS with the larger reception strength may help reduce the interference of the transmission in the established R-TWT in the first BSS to the transmission in the R-TWT between the first AP and the first STA.
  • the RSSI may be obtained by measuring the received physical layer preamble code by the first STA.
  • the present application is not limited to the frame used to carry the first information, which can be carried by the frame sent by the STA to the AP, such as but not limited to the association request (Association Request) frame, the reassociation request (Reassociation Request) frame, the authentication request frame, the probe response (Probe Response) frame, the TWT establishment request frame, etc.
  • the first information is carried in a first request frame, and the first request frame is used to request the establishment of an R-TWT between the first site device and the first access point device. That is, the first request frame can be a TWT establishment request frame, or an R-TWT establishment request frame, a TWT establishment frame.
  • the first STA When initiating a request to establish an R-TWT, the first STA indicates the interfering BSS information of the first STA to the first AP. In this way, when the first AP establishes the R-TWT between the two, it is helpful to avoid the established R-TWT in the interfering BSS, and reduce the interference of data transmission in the established R-TWT in the first BSS with the data transmission during the SP period of the R-TWT between the first AP and the first STA.
  • the first request frame may be an association request frame, a reassociation request frame, an authentication request frame, etc., which is not limited in the present application.
  • the first request frame also includes R-TWT parameters requested by the first STA to be established. For example, target wake-up time, standard minimum TWT wake-up length, TWT wake-up time interval, etc.
  • the R-TWT parameters are used to determine the time information of the SP of the R-TWT between the first AP and the first STA, such as the start time, duration, and period.
  • the R-TWT determined according to the R-TWT parameters requested by the first STA and the established R-TWT in the at least one first BSS do not overlap in time, or in other words, do not conflict. That is, the R-TWT parameters requested by the first STA avoid the established R-TWT in the interfering BSS of the first STA.
  • the method 200 further includes:
  • the first access point device sends a first response frame to the first station device, where the first response frame is a response frame to the first request frame.
  • the first response frame is used to indicate approval or rejection of the R-TWT established by the first request frame.
  • the first response frame may carry R-TWT parameters for establishing R-TWT between the first AP and the first STA.
  • the R-TWT parameters carried in the first response frame and the R-TWT parameters carried in the first request frame may be the same or different.
  • the R-TWT determined based on the R-TWT parameters in the first response frame and the established R-TWT within the at least one first BSS do not overlap in time, or in other words, do not conflict.
  • the R-TWT between the first AP and the first STA established by the first AP avoids the R-TWT established in the interfering BSS of the first STA.
  • the R-TWT parameters selected do not conflict with the R-TWT parameters corresponding to the established R-TWT in at least one of the first BSSs.
  • the present application does not limit the manner in which the first information is carried in the frame, such as being carried in an existing element or field in the frame, or a new element or field may be added to carry the first information.
  • the manner in which the first information is carried in the first request frame is described below with reference to specific examples, but the present application is not limited to this, and other alternative methods derived from the examples of the present application all fall within the scope of protection of the present application.
  • the first request frame includes a first TWT element, and the first information is carried in the first TWT element.
  • an existing field eg, a reserved field
  • a newly added field in the TWT element may be used to carry the first information.
  • the first TWT element includes an OBSS Info List field, and the OBSS Info List field is used to carry the first information.
  • the OBSS Info List field is also called Interference BSS Info field.
  • an Interference BSSID Info field is added at the end of the Broadcast TWT Parameter Set field in the first TWT element.
  • the length of the Interference BSSID Info field is variable, and the specific length is determined by the size of the interference BSS information reported by the first STA.
  • the first TWT element also includes an OBSS information list present (OBSS Info List Present) field, or an interference BSS information present (Interference BSS Info Present) field, which is used to indicate whether the first TWT element includes an interference BSS information field.
  • OBSS Info List Present OBSS Info List Present
  • Interference BSS Info Present Interference BSS Info Present
  • the OBSS Info List Present field is 1, it means that the OBSS Info List field exists in the first TWT element; if the OBSS Info List Present field is 0, it means that the OBSS Info List field does not exist in the first TWT element.
  • the first TWT element is also used to carry the R-TWT parameters requested to be established by the first STA.
  • the first TWT element includes a TWT parameter information (TWT Parameter Information) field.
  • TWT Parameter Information TWT Parameter Information
  • the R-TWT parameters requested to be established by the first STA are carried in the TWT parameter information field.
  • the specific format of the TWT parameter information field refers to the formats illustrated in Figures 2 to 6.
  • Case 1 Report the interfering BSS and use the BSSID to identify the interfering BSS.
  • FIG10 is a schematic format diagram of the format of an OBSS information list field provided in an embodiment of the present application, wherein in the example of FIG10 , a BSSID is used to identify an interfering BSS.
  • the OBSS information list is carried in the Broadcast TWT Parameter Set field of the first TWT element.
  • the OBSS information list field includes a BSSID size (BSSID Sise) field and/or at least one BSSID field.
  • the BSSID size field is used to indicate the number of BSSID fields included in the OBSS information list field, that is, the number of interfering BSSs.
  • the BSSID field is used to indicate the ID information of the first BSS, that is, the BSSID.
  • the length of the BSSID field may be 6 bytes. Then at least one BSSID field may occupy 6*n bytes, where n is the number of interfering BSSs.
  • the length of the BSSID Size field can be 1 byte, or other length, which is determined by the maximum number of interfering BSSs that can be reported.
  • the OBSS information list field exists.
  • the first TWT element may be carried in a TWT establishment request frame.
  • the OBSS information list field indicates the BSS information to which the first STA may be subjected through one or more BSSIDs.
  • the first TWT element can be carried in a beacon frame.
  • the OBSS information list field indicates the interfering BSS information that the device using the R-TWT may be subject to through one or more BSSIDs.
  • the Broadcast TWT Parameter Set field also includes an OBSS information list present (OBSS Info List Present) field, used to indicate whether the Broadcast TWT Parameter Set includes an OBSS information list field.
  • OBSS Info List Present OBSS information list present
  • the OBSS Info List Present field is 1, it means that the OBSS Info List field exists in the Broadcast TWT Parameter Set. If the OBSS Info List Present field is 0, it means that the OBSS Info List field does not exist in the Broadcast TWT Parameter Set.
  • the OBSS Info List Present field is included in the Broadcast TWT Info field in the Broadcast TWT Parameter Set field.
  • Case 2 Report the interfering BSS and use BSS Color to identify the interfering BSS.
  • Figure 11 is a schematic format diagram of the format of another OBSS information list (OBSS Info List) field provided in an embodiment of the present application, wherein, in the example of Figure 11, BSS Color is used to identify the interfering BSS.
  • OBSS Info List another OBSS information list
  • the OBSS information list (OBSS Info List) field includes a BSS color size (BSS Color Sise) field and/or at least one BSS color (BSS Color) field, the BSS color size field is used to indicate the number of BSS color fields included in the OBSS information list field, and the BSS color field is used to indicate the color information of the first BSS.
  • BSS Color Sise BSS Color Sise
  • BSS Color BSS color
  • the BSS color size field is used to indicate the number of BSS color fields included in the OBSS information list field
  • the BSS color field is used to indicate the color information of the first BSS.
  • the length of the BSS color field can be 6 bits or 1 byte, for example, using the high or low 6 bits in 1 byte to indicate the BSS Color.
  • the length of the BSS Color Size field can be 1 byte, or other length, depending on the maximum number of interfering BSSs that can be reported.
  • the OBSS information list field exists.
  • the first TWT element can be carried in the TWT establishment request frame.
  • the OBSS information list field indicates the BSS information that the first STA may be interfered with through one or more BSS Colors.
  • the first TWT element can be carried in the beacon frame.
  • the OBSS information list field indicates the interference BSS information that the device using the R-TWT may be subject to through one or more BSS Colors.
  • the Broadcast TWT Parameter Set field also includes an OBSS information list present (OBSS Info List Present) field, used to indicate whether the Broadcast TWT Parameter Set includes an OBSS information list field.
  • OBSS Info List Present OBSS information list present
  • the OBSS Info List Present field is 1, it means that the OBSS Info List field exists in the Broadcast TWT Parameter Set. If the OBSS Info List Present field is 0, it means that the OBSS Info List field does not exist in the Broadcast TWT Parameter Set.
  • the OBSS Info List Present field is included in the Broadcast TWT Info field in the Broadcast TWT Parameter Set field.
  • Case 3 Report the interfering BSS and the RSSI information corresponding to the interfering BSS.
  • Figure 12 is a schematic format diagram of the format of another OBSS information list (OBSS Info List) field provided in an embodiment of the present application, wherein, in the example of Figure 12, BSSID or BSS Color is used to identify the interfering BSS, and the RSSI information corresponding to the interfering BSS is reported to the first AP.
  • OBSS Info List another OBSS information list
  • the OBSS information list (OBSS Info List) field includes an OBSS information size (OBSS Info Sise) field/or at least one OBSS information (OBSS Info) field, wherein the OBSS information size field is used to indicate the number of OBSS information fields included in the OBSS information list, that is, the number of interfering BSSs, and the OBSS information field is used to indicate the ID information or color information of the at least one first BSS, and the receiving strength information of the first STA to the signal sent by the AP in the at least one first BSS, such as RSSI.
  • OBSS information size field is used to indicate the number of OBSS information fields included in the OBSS information list, that is, the number of interfering BSSs
  • the OBSS information field is used to indicate the ID information or color information of the at least one first BSS, and the receiving strength information of the first STA to the signal sent by the AP in the at least one first BSS, such as RSSI.
  • the BSS information (BSS Info) field includes a BSSID/BSS Color field and an RSSI field (optional).
  • the BSSID/BSS Color field is used to indicate the interfering BSS of the first STA
  • the RSSI field is used to indicate the RSSI of the signal sent by the first STA to the AP in the interfering BSS indicated by the BSSID/BSS Color field.
  • the value range of RSSI information is 0 to 255.
  • the OBSS information (BSS Info) field also includes a control field, which is used to indicate control information of other fields in the OBSS information field.
  • control field may include at least one of the following fields:
  • the OBSS Info Type or Interference BSS Information Type field is used to indicate the BSSID/BSS Color field is used to indicate the BSSID or BSS Color;
  • the RSSI Present field is used to indicate whether the OBSS information field includes the RSSI field.
  • the OBSS Info Type field can be 1 bit or 2 bits, which is determined by the type of OBSS identifier that can be indicated.
  • the OBSS Info Type field has a value of 0, indicating that the BSSID/BSS Color field is used to indicate the BSSID, and if the value is 1, it indicates that the BSSID/BSS Color field is used to indicate the BSS Color.
  • the RSSI Present field can be 1 bit.
  • a value of 1 in this 1 bit indicates that the BSS information field includes the RSSI field, otherwise, the RSSI field is not included.
  • the value of the RSSI Present field is 1, and in the R-TWT broadcast phase, the value of the RSSI Present field is 0.
  • the BSSID/BSS Color field is used to indicate the BSSID
  • the length may be 6 bytes
  • the BSSID/BSS Color field is used to indicate the BSS Color.
  • the length may be 6 bits or 1 byte, wherein the high or low 6 bits of the 1 byte are used to indicate the BSS Color, and the other 2 bits are reserved.
  • the RSSI indicated by the RSSI field may be determined according to the received signal strength of the Beacon frame sent by the first STA to the first AP.
  • the OBSS Info List field exists.
  • the OBSS Info List field indicates the interfering BSS that the first STA may be subject to and the reception strength information of the first STA for the signal within the interfering BSS through one or more BSSIDs or BSS Colors.
  • the OBSS Info List field indicates the interfering BSS information that the device using the R-TWT may be subject to through one or more BSSIDs or BSS Colors.
  • the Broadcast TWT Parameter Set field also includes an OBSS list presence (OBSS Info List Present) field, used to indicate whether the Broadcast TWT Parameter Set includes an OBSS Info List field.
  • OBSS list presence OBSS Info List Present
  • the OBSS Info List Present field is 1, it means that the OBSS Info List field exists in the Broadcast TWT Parameter Set. If the OBSS Info List Present field is 0, it means that the OBSS Info List field does not exist in the Broadcast TWT Parameter Set.
  • the OBSS Info List Present field is included in the Broadcast TWT Info field in the Broadcast TWT Parameter Set field.
  • Case 4 Report the interfering BSS and the established R-TWT information within the interfering BSS.
  • the R-TWT information established within the at least one first BSS and the identification information or color information of the at least one first BSS can be carried in the same element, such as the aforementioned first TWT element, or can be carried in different elements.
  • the first TWT element may include at least one R-TWT parameter information field, each R-TWT parameter information field corresponds to an interfering BSS, and the R-TWT parameter information field is used to indicate the R-TWT information established in the corresponding interfering BSS.
  • the first request frame further includes at least one OBSS R-TWT element for carrying the established R-TWT information in the at least one first BSS.
  • the at least one OBSS R-TWT element corresponds to at least one interfering BSS of the first STA, and each OBSS R-TWT element is used to carry the established R-TWT information in the corresponding interfering BSS.
  • Table 2 is an example of a frame format for establishing a TWT frame according to an embodiment of the present application.
  • Order 5 information content can be added to the TWT establishment request frame, so that the first STA can report the interfering BSS and the established R-TWT information in the interfering BSS to the first AP through the TWT establishment request frame.
  • the information content of Order 4 in the TWT establishment frame may be the R-TWT parameters requested by the first STA and the corresponding interfering BSS
  • the information content of Order 5 may be the R-TWT information established in the interfering BSS.
  • the format of the OBSS R-TWT element can refer to the format of the TWT element in Figures 4 to 6, and for the sake of brevity, it will not be repeated here.
  • the OBSS R-TWT element may also be referred to as a TWT element. Since the R-TWT element is used to carry the R-TWT information established within the OBSS, it is called the OBSS R-TWT element for the convenience of distinction and description, but it should not constitute any limitation to the present application.
  • the first STA may also report RSSI information corresponding to the interfering BSS to the first AP.
  • RSSI information corresponding to the interfering BSS
  • the method 200 further includes:
  • the first access point device obtains the R-TWT information established in the at least one first BSS according to the first information.
  • the established R-TWT information within at least one first BSS is obtained from an AP or a first STA within the at least one first BSS.
  • the first AP when the first information includes ID information or color information of at least one first BSS, but does not include R-TWT information established in at least one first BSS, the first AP obtains the R-TWT information established in the at least one first BSS from the pre-stored information based on the ID information or color information of the at least one first BSS.
  • the pre-stored information includes BSSID or color information of one or more BSSs, and R-TWT information established in the one or more BSSs.
  • the first AP when receiving the first information sent by the first STA, can determine the interfering BSS of the first STA based on the BSSID information or BSS color information carried in the first information, and then search the pre-stored information for the R-TWT information established in the interfering BSS. Furthermore, when establishing the R-TWT between the first AP and the first STA, the R-TWT established in the interfering BSS can be avoided, thereby reducing the interference of the transmission in the interfering BSS with the transmission during the SP period of the R-TWT established between the first AP and the first STA.
  • the pre-stored information may be acquired from a STA associated with the first AP and/or an AP adjacent to the first AP.
  • the R-TWT information established in the interfering BSS is recorded as OBSS R-TWT information.
  • the following specific embodiments illustrate the method of obtaining the pre-stored information.
  • Method 1 The pre-stored information is obtained from the neighboring AP.
  • the pre-stored information is acquired during the R-TWT broadcast phase.
  • the BSS where the neighboring AP is located and the BSS where the first AP is located are OBSSs.
  • the first AP can receive frames sent by the neighboring AP, and the neighboring AP can broadcast the R-TWT information established in the BSS where it is located. Then the first AP can obtain the R-TWT information established in the BSS where the neighboring AP is located by receiving the frames sent by the neighboring AP. Then the first AP can store the BSSID or color information of the BSS where the neighboring AP is located, and the R-TWT information established by the neighboring AP and its associated STA. Since the AP can receive frames sent by the neighboring AP, the transmission between the neighboring AP and its associated STA will interfere with the transmission between the first AP and its associated STA. Therefore, the first AP can store the above information.
  • the neighboring AP may include an AP in the first BSS, and the first AP may obtain the R-TWT information established in the first BSS by receiving frames sent by the AP in the first BSS.
  • the first AP may receive a beacon frame sent by a neighboring AP (eg, a second AP), wherein the Beacon frame includes R-TWT information established in the BSS where the second AP is located.
  • a neighboring AP eg, a second AP
  • the beacon frame may also include interference BSS information (i.e., OBSS information) corresponding to the R-TWT established in the BSS where the second AP is located.
  • the transmission in the interfering BSS may interfere with the transmission in the R-TWT established in the BSS where the second AP is located.
  • the interfering BSS information may, for example, be the BSSID or BSS Color corresponding to the interfering BSS.
  • the interference BSS information corresponding to the R-TWT established in the BSS where the second AP is located can be obtained by the second AP from its associated STA.
  • the associated STA of the second AP can report the interference BSS information (i.e., OBSS information) of the associated STA to the second AP.
  • the specific reporting method refers to the relevant implementation of the first STA reporting the interference BSS information (i.e., OBSS information) to the first AP.
  • the second AP can consider the OBSS reported by the associated STA as the interference BSS corresponding to the R-TWT established between the second AP and the associated STA.
  • the beacon frame may include a second TWT element, where the second TWT element is used to carry the R-TWT information established between the second AP and the STA associated with the second AP.
  • the second TWT element is also used to carry information of at least one second BSS, such as the BSSID or color information of the at least one second BSS, wherein the at least one second BSS is an interfering BSS corresponding to the R-TWT established in the BSS where the second AP is located. That is, the transmission within the at least one second BSS may interfere with the transmission during the SP period of the R-TWT established between the second AP and the STA associated with the second AP.
  • the format of the second TWT element may refer to the format of the first TWT element in the aforementioned embodiment.
  • the format of the second TWT element may refer to the format of the first TWT element in the aforementioned embodiment.
  • AP1 and AP2 can receive frames sent by each other, where R-TWT has been established between AP2 and STA21 and STA22.
  • AP2 can broadcast the R-TWT information established between AP2 and STA21, and between AP2 and STA22 through Beacon frames.
  • AP1 can determine the R-TWT information established between AP2 and STA21, and between AP2 and STA22 by parsing the TWT element in the Beacon frame sent by AP2.
  • Mode 2 The pre-stored information is obtained from the STA associated with the first AP.
  • the associated STA of the first AP can receive frames sent by APs in other BSSs.
  • APs in other BSSs can broadcast the R-TWT information established in their BSSs.
  • the first STA can obtain the R-TWT information established in other BSSs by receiving frames sent by APs in other BSSs.
  • the OBSS of the BSS where the first STA is located includes the at least one first BSS, and the STA can receive the established R-TWT information in the BSS where the STA is located broadcasted by the AP in the at least one first BSS.
  • the first STA can receive a beacon frame sent by the AP in the first BSS, and obtain the established R-TWT information in the first BSS from the beacon frame.
  • the pre-stored information is obtained by the first AP from an associated STA of the first AP based on a request.
  • the associated STA of the first AP may report the established R-TWT information in the OBSS acquired by the first AP to the first AP based on the request of the first AP.
  • the first AP may request the first STA to report the established R-TWT information in the OBSS. Further, the first STA may report to the first AP the established R-TWT information in at least one first BSS acquired by it.
  • the method 200 further includes:
  • the first AP sends a second request frame to the first STA, where the second request frame is used to request the first STA to report the R-TWT information established in the BSS (i.e., OBSS) where other APs are located and obtained by the first STA;
  • BSS i.e., OBSS
  • the first AP receives a second response frame sent by the first STA, and the second response frame reports the R-TWT information established in the BSS (ie, OBSS) where other APs are located and obtained by the first STA.
  • BSS ie, OBSS
  • the R-TWT information established in other BSSs reported by the first STA may be obtained by the first STA from the AP in other BSSs during the R-TWT broadcast phase.
  • the first STA obtains it by receiving beacon frames sent by APs in other BSSs.
  • the beacon frame may also include interfering BSS information corresponding to the R-TWT established in other BSSs.
  • the above information is carried in the TWT element in the beacon frame. Therefore, when the first STA receives a beacon frame sent by a non-associated AP and the beacon frame includes a TWT element, the first STA can store the information in the TWT element.
  • the second response frame also includes interference BSS information corresponding to the R-TWT established in other BSSs.
  • the other BSS includes a BSS where a third AP is located, and the second response frame includes a third TWT element, and the third TWT element is used to carry the R-TWT information established between the third AP and the STA associated with the third AP.
  • the third TWT element is also used to carry information of at least one third BSS, wherein transmission within at least one third BSS may interfere with transmission during the SP period of the R-TWT between the third AP and the STA associated with the third AP.
  • the at least one third BSS is an interference BSS of the STA associated with the third AP.
  • the interference BSS information and the R-TWT between the third AP and the STA associated with the third AP correspond to each other.
  • the R-TWT established between the third AP and different STAs can correspond to corresponding interference BSS information.
  • the interference BSS information corresponding to the R-TWT established between the third AP and different STAs (or each group of AP and STA) can be the same, or different.
  • the first STA can receive frames sent by other APs, the transmission between other APs and their associated STAs may interfere with the transmission between the first STA and the first AP. Therefore, the first AP can store the BSSID or color information of the BSS where the other APs are located, as well as the R-TWT information established between the other APs and their associated STAs obtained by the associated STA.
  • the second request frame is a beacon request (Beacon Request) frame
  • the second response frame is a beacon response (Beacon Response) frame.
  • AP1 is associated with STA11 and STA12
  • AP2 is associated with STA21 and STA22.
  • STA21, STA22 and AP2 have established R-TWT
  • AP2 can broadcast the R-TWT information established between AP2 and STA21, as well as between AP2 and STA22 through Beacon frames.
  • STA11 can receive the Beacon frame of AP2, thereby knowing the R-TWT information established in the BSS where AP2 is located.
  • AP1 sends a Beacon Request to STA11, requesting STA11 to reply with a Beacon Response, which includes the R-TWT information carried in the Beacon frame sent by AP2. Therefore, AP1 can learn the R-TWT information established between AP2 and STA21 and STA22 through Beacon Response.
  • Method 3 The pre-stored information is obtained through sharing.
  • APs can be grouped, and APs in the same group can share the R-TWT information established in their BSS with other APs, that is, an AP in the same group can obtain the R-TWT information established in the BSS where other APs in the same group are located.
  • the grouping of APs that share R-TWT information is called a multi-AP group.
  • APs in the multi-AP group can be connected by wired or wireless means to achieve sharing of R-TWT information.
  • each AP obtains the R-TWT information established in the BSS where other APs are located through the central AP.
  • each AP can directly obtain the R-TWT information established in the BSS where other APs are located.
  • the APs in the multi-AP group may also share the interfering BSS information corresponding to the established R-TWT, that is, which BSSs may interfere with the established R-TWT.
  • AP1 and AP2 belong to a multi-AP group
  • AP2 establishes R-TWT with STA21 and STA22 and shares the R-TWT information with AP1
  • AP2 can also share the interference BSS information of the established R-TWT with AP1, so that AP1 can determine whether the R-TWT established between AP2 and its associated STA may be interfered with by AP1 based on the interference BSS information.
  • the interference BSS information of the R-TWT established between AP2 and STA21 includes the ID information or color information of the BSS where AP1 is located, while the interference BSS information of the R-TWT established between AP2 and STA22 does not include the ID information or color information of the BSS where AP1 is located.
  • the R-TWT information established in at least one first BSS is acquired during the R-TWT establishment phase.
  • the first STA when requesting to establish an R-TWT, the first STA indicates the interfering BSS of the first STA and the R-TWT information established in the interfering BSS to the first AP.
  • the R-TWT information established in at least one first BSS is carried in the first information, and the first information is sent through a first request frame.
  • the carrying method of the R-TWT information established in at least one first BSS in the first request frame refers to the relevant description in Case 4, and for the sake of brevity, it is not repeated here.
  • AP1 is associated with STA1
  • AP2 is associated with STA2
  • AP3 is associated with STA3.
  • the dotted line represents the coverage of each AP, or the BSS range.
  • the BSS where AP2 and AP3 are located is the interfering BSS of STA1. Assume that AP2 has established R-TWT with STA2, and AP3 has established R-TWT with STA3.
  • the TWT establishment request frame contains a first TWT element and at least one OBSS R-TWT element, wherein the first TWT element is used to indicate the R-TWT information requested to be established and the interfering BSS information, and the at least one OBSS R-TWT element is used to carry the R-TWT information established in at least one interfering BSS.
  • the R-TWT information established in the interfering BSS carried in the OBSS R-TWT element can be obtained by receiving the Beacon frames broadcast by AP2 and AP3.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • FIG 17 is a schematic diagram of an application scenario of an embodiment of the present application.
  • STA11 and STA12 are associated with AP1, and STA21 is associated with AP2.
  • the dotted line in Figure 17 represents the coverage range of the AP.
  • STA11 is in the OBSS and may be interfered by AP2.
  • the TWT element included in the Beacon frame by AP1 can notify the R-TWT information established between AP1 and STA12.
  • the TWT element included in the Beacon frame by AP2 can notify the R-TWT information established between AP2 and STA21.
  • STA11 Since STA11 is in the OBSS, STA11 will receive the Beacon frame sent by AP1 and the Beacon frame sent by AP2.
  • the Beacon frame sent by AP1 contains the information of the R-TWT established by AP1 and STA12.
  • STA11 determines the interference BSS corresponding to the R-TWT established by AP1 and STA12, which does not include the BSS where AP2 is located. Since STA11 is in the OBSS, it may be interfered by AP2. Therefore, STA11 determines that it cannot join the R-TWT established between AP1 and STA12.
  • STA11 can learn the interference BSS corresponding to the R-TWT established by AP2 and STA21 by parsing the TWT element in the Beacon frame sent by AP2. Further, STA11 sends a TWT establishment request to the associated AP1, and the TWT establishment request is used to request the establishment of an R-TWT between STA11 and AP1.
  • the R-TWT parameters requested by the TWT establishment request need to avoid the R-TWT SP between AP2 and STA21 (that is, STA11 needs to use parameters different from those of the R-TWT established between AP2 and STA21 to avoid time conflicts between the R-TWT SP between STA11 and AP1 and the R-TWT SP between AP2 and STA21).
  • the interfering BSS indicated by the Interference BSSID Info field in the TWT element included in the TWT establishment request is the BSS where AP2 is located.
  • the Interference BSSID Info Present field is set to 1, indicating that the TWT element carries the Interference BSSID Info field.
  • AP1 replies with an R-TWT response frame to STA11, indicating that it agrees to STA11's establishment request.
  • the TWT information broadcast by AP1 in the Beacon frame includes the R-TWT information established between AP1 and STA11.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • FIG 18 is a schematic diagram of an application scenario of an embodiment of the present application.
  • STA11, STA12 and STA13 are associated with AP1, and STA21 is associated with AP2. It is assumed that STA12 has established R-TWT with AP1, and STA11 has established R-TWT with AP1 according to the process described in Example 1.
  • the TWT element included in the Beacon frame by AP1 can notify the R-TWT information established between AP1 and STA11 and STA12.
  • the R-TWT element included in the Beacon frame by AP2 can notify the R-TWT information established between AP2 and STA21.
  • the dotted line in Figure 18 represents the coverage of the AP or the service of the BSS.
  • STA13 is located in the OBSS and may therefore be interfered with by AP2.
  • STA13 Since STA13 is in the OBSS, STA13 will receive the Beacon frame sent by AP1 and the Beacon frame sent by AP2.
  • the Beacon frame sent by AP1 contains the information of the R-TWT established by AP1, STA11 and STA12.
  • STA13 determines the interference BSS corresponding to the R-TWT established by AP1 and STA11, which includes the BSS where AP2 is located. Since STA13 is in the OBSS, it may also be interfered by AP2, that is, the interference BSS of STA11 and STA13 is the same.
  • STA13 determines that it can join the R-TWT established between AP1 and STA11.
  • STA13 can determine the interference BSS of STA21 by parsing the Interference BSSID Info field of the Broadcast R-TWT Parameter Set field in the TWT element in the Beacon frame sent by AP2.
  • STA13 sends a TWT establishment request to the associated AP1, and the TWT establishment request is used to request the establishment of R-TWT between STA13 and AP1. Since the interfering BSSs of STA11 and STA12 are the same, STA13 can use the R-TWT information established between AP1 and STA11 to initiate the establishment request of R-TWT. That is, the R-TWT parameters carried by STA13 in the TWT establishment request can be the same as the R-TWT parameters carried in the TWT establishment request sent by STA11.
  • the interfering BSS indicated by the Interference BSSID Info field in the TWT element included in the TWT establishment request sent by STA13 is the BSS where AP2 is located.
  • the Interference BSSID Info Present field is set to 1, indicating that the TWT element carries the Interference BSSID Info field.
  • AP1 replies with an R-TWT response frame to STA13, indicating that it agrees to STA13's establishment request.
  • the TWT information broadcast by AP1 in the Beacon frame includes the R-TWT information established between AP1 and STA13.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • FIG19 is a schematic diagram of an application scenario of an embodiment of the present application.
  • STA11, STA12, and STA13 are associated with AP1
  • STA21 and STA22 are associated with AP2.
  • STA12 has established R-TWT with AP1
  • STA11 has established R-TWT with AP1 through the process described in Example 1
  • STA13 has established R-TWT with AP1 through the process described in Example 2
  • STA21 has established R-TWT with AP2.
  • the dotted line in FIG19 indicates the coverage of the AP or the service of the BSS.
  • STA22 may be interfered with by AP1, that is, the interfering BSS of STA22 includes the BSS where AP1 is located.
  • STA22 can obtain the R-TWT information established in its BSS and the corresponding interference BSS information by parsing the beacon frames of AP1 and AP2.
  • the interference BSS of STA21 does not include the BSS where AP1 is located, and the interference BSS of STA22 includes the BSS where AP1 is located. Therefore, STA22 can determine that it cannot join the R-TWT that STA21 and AP2 have established.
  • STA22 sends a TWT establishment request to the associated AP2, and the TWT establishment request is used to request the establishment of R-TWT between STA22 and AP2.
  • the interfering BSS indicated by the Interference BSSID Info field in the TWT element included in the TWT establishment request sent by STA22 is the BSS where AP1 is located.
  • the Interference BSSID Info Present field is set to 1, indicating that the TWT element carries the Interference BSSID Info field.
  • AP2 replies with an R-TWT response frame to STA22, indicating that it agrees to STA22's establishment request.
  • the TWT information broadcast by AP2 in the Beacon frame includes the R-TWT information established between AP2 and STA22.
  • the first AP may be silent according to interference sources or the environment in which it is located.
  • the first AP may follow at least one of the following silence rules:
  • the first AP remains silent during the SP period of the R-TWT indicated by the established R-TWT information in the first BSS set, wherein the BSSs in the first BSS set and the BSS where the first AP is located are OBSSs;
  • the first AP remains silent within the R-TWT SP indicated by the first R-TWT information, wherein the interfering BSS corresponding to the first R-TWT information includes the BSS where the first AP is located.
  • the first BSS set is a BSS where the AP from which the first AP receives a beacon frame is located, wherein the beacon frame includes established R-TWT information within the BSS.
  • the R-TWT determined according to the R-TWT information obtained according to the aforementioned method 1 is recorded as the first type R-TWT
  • the R-TWT determined according to the R-TWT information obtained according to the aforementioned method 2 or method 3 is recorded as the second type R-TWT.
  • the first AP During the SP of the first type of R-TWT, the first AP remains silent. If the first AP holds a TXOP, the first AP needs to end the TXOP before the SP of the first type of R-TWT starts.
  • the interfering BSS corresponding to the second type of R-TWT includes the BSS where the first AP is located, the first AP remains silent during the SP of the second type of R-TWT. If the first AP holds a TXOP, the first AP needs to end the TXOP before the SP of the second type of R-TWT begins.
  • the first AP can receive frames sent by a neighboring AP, that is, the neighboring AP can also receive frames sent by the first AP.
  • the transmission between the first AP and its associated STA will interfere with the transmission between the neighboring AP and its associated STA.
  • the first AP can remain silent during the SP period of the R-TWT established in the BSS where the neighboring AP is located.
  • the first AP may not be able to receive frames from adjacent APs.
  • the first AP can obtain the R-TWT information and corresponding interference BSS information established in one or more BSSs through the aforementioned method 2. If the interference BSS corresponding to a certain R-TWT includes the BSS where the first AP is located, the first AP can remain silent during the SP period of the R-TWT.
  • the first AP obtains the R-TWT information of other APs and the corresponding interfering BSS information through a multi-AP group. If the interfering BSS corresponding to a certain R-TWT includes the BSS where the first AP is located, the first AP can remain silent during the SP period of the R-TWT.
  • the first STA may be silent according to the interference source or the environment.
  • the first STA may follow the following silence rules:
  • the first STA remains silent during the SP period of the R-TWT indicated by the established R-TWT information within the second BSS set, where the second BSS set is the BSS where the access point device where the first site device receives the beacon frame is located.
  • the first STA can receive the beacon frame sent by the AP in the BSS in the second BSS set, it means that the first STA is located in the OBSS. Therefore, the transmission between the first STA and the first AP will interfere with the transmission in the BSS in the second BSS set. Therefore, the first STA needs to remain silent during the SP period of the R-TWT indicated by the established R-TWT information in the second BSS set.
  • AP1 is associated with STA11 and STA12
  • AP2 is associated with STA21 and STA22
  • AP1 establishes R-TWT with STA11 and STA12 respectively
  • AP2 establishes R-TWT with STA21 and STA22 respectively.
  • the interference BSS of STA11 includes the BSS where AP2 is located
  • the interference BSS of STA21 includes the BSS where AP1 is located
  • the interference BSS of STA12 does not include the BSS where AP2 is located
  • the interference BSS of STA22 does not include the BSS where AP1 is located.
  • STA11 needs to remain silent during the SP of the R-TWT between AP2 and STA21, during the SP of the R-TWT between AP2 and STA22, and during the SP of the R-TWT between AP1 and STA12.
  • STA12 needs to remain silent during the SP period of the R-TWT between AP1 and STA11.
  • STA21 needs to remain silent during the SP of the R-TWT between AP1 and STA11, the SP of the R-TWT between AP1 and STA12, and the SP of the R-TWT between AP2 and STA22.
  • STA22 needs to remain silent during the SP period of R-TWT between AP2 and STA21.
  • AP1 needs to remain silent during the SP period of R-TWT between AP2 and STA21.
  • AP2 needs to remain silent during the SP period of the R-TWT between AP1 and STA11.
  • AP1 is located in the OBSS, and during the SP of the R-TWT established between AP2 and its associated STA, AP1 needs to remain silent. Also, AP2 is located in the OBSS, and during the SP of the R-TWT established between AP1 and its associated STA, AP2 needs to remain silent.
  • AP1 can learn from the Beacon Response frame sent by STA11 that the R-TWT established between AP2 and STA21 may be interfered by AP1 (i.e., the interfering BSS information includes the ID information or color information of the BSS where AP1 is located), while the R-TWT established between AP2 and STA22 will not be interfered by AP1 (i.e., the interfering BSS information does not include the ID information or color information of the BSS where AP1 is located). Therefore, during the SP period of the R-TWT established between AP2 and STA21, AP1 needs to remain silent.
  • AP1 can learn through sharing that the R-TWT established between AP2 and STA21 may be interfered by AP1, while the R-TWT established between AP2 and STA22 will not be interfered by AP1. Therefore, during the SP period of the R-TWT established between AP2 and STA21, AP1 needs to remain silent.
  • the first AP can establish an R-TWT between the first AP and its associated STA based on the environment in which the STA is located (for example, the interference it is subjected to, such as interference BSS information). For example, for STAs with the same interference BSS, the first AP can establish the same R-TWT, that is, use the same R-TWT parameters. For STAs with different interference BSSs, the first AP can establish different R-TWTs, that is, use different R-TWT parameters. Therefore, an embodiment of the present application can group R-TWTs according to interference sources, each group of R-TWTs corresponds to a corresponding interference BSS, and different groups of R-TWTs correspond to different interference BSSs.
  • the first request frame includes the interference BSS information corresponding to the first STA, which is used to request the first AP to establish an R-TWT for the interference BSS information.
  • the first AP can establish different R-TWTs for different interference BSSs, and can establish the same R-TWT for the same interference BSS. If there are multiple STAs with the same interference BSS, the multiple STAs can use the same R-TWT. In this way, there is no need to establish a different R-TWT for each STA, which causes other STAs to need to back off during the SP period of the R-TWT, resulting in the problem that data cannot be transmitted in time, thereby improving the packet yield of R-TWT.
  • the first AP can establish R-TWT according to the interference source, and further the first AP and the first STA can back off according to the interference source without backing off during each R-TWT SP period, which is beneficial to improving the grouping benefit of R-TWT.
  • AP1 is associated with STA11, STA12, STA13, and STA14, and AP2 is associated with STA21.
  • STA11 will not be interfered by other BSSs
  • STA12 will be interfered by the BSS where AP3 is located
  • STA13 will be interfered by the BSS where AP2 is located
  • STA14 will be interfered by the BSS where AP2 and AP3 are located
  • STA21 will be interfered by the BSS where AP3 is located.
  • AP1 needs to establish different R-TWTs for STA11, STA12, STA13, and STA14.
  • AP2 establishes R-TWT for STA21, and it does not conflict with the R-TWT SP between AP1 and STA13, and AP1 and STA14 in time, but it can overlap with the R-TWT SP between AP1 and STA11, and AP1 and STA12.
  • AP2 When grouping silence by interference source, AP2 needs to remain silent only when delay-sensitive traffic is transmitted during the SP period of R-TWT between AP1 and STA13, and AP1 and STA14, and the total silence duration is 2t.
  • delay-sensitive traffic is transmitted during the SP period of R-TWT between AP1 and STA11, and AP1 and STA12, because STA11 and STA12 are not located in the BSS where AP2 is located, AP2 can still compete for the channel normally, and the total silence duration of AP2 is 2t.
  • AP3 only needs to remain silent when transmitting delay-sensitive traffic during the R-TWT SP between AP1 and STA12, and between AP1 and STA14, so the total silence duration of AP3 is 2t.
  • the R-TWT grouping method and the silent method according to the interference source based on the embodiments of the present application are beneficial to reducing the silent time of the device, thereby ensuring the timely transmission of delay-sensitive services.
  • the site device can report the interfering BSS information (i.e., OBSS information) of the site device to the access point device.
  • the access point device can establish an R-TWT between the site device and the access point device based on the R-TWT established in the interfering BSS, which is conducive to reducing the interference of the R-TWT established in the interfering BSS to the transmission within the R-TWT between the site device and the access point device.
  • the R-TWT established by the access point device and the site device avoids the R-TWT established in the interfering BSS.
  • the established R-TWT information within the interfering BSS may be sent to the access point device by the station device when requesting to establish the R-TWT.
  • the R-TWT information established in the interfering BSS may be obtained by the access point device from the adjacent access point device.
  • the adjacent access point device may broadcast the R-TWT information established in the BSS where it is located, and the access point device may receive and retain the information.
  • the site device requests to establish R-TWT
  • the ID information or color information of the interfering BSS may be provided to the access point device, and the access point device obtains the R-TWT information established in the interfering BSS from the stored information.
  • the R-TWT information established in the interfering BSS may be obtained by the access point device from the associated site device.
  • an adjacent access point device may broadcast the R-TWT information established in its BSS, and the associated site device may receive and maintain the information.
  • the site device may report the information to the access point device, and the access point device may save the information.
  • the ID information or color information of the interfering BSS may be provided to the access point device, and the access point device obtains the R-TWT information established in the interfering BSS from the saved information.
  • the established R-TWT information in the interfering BSS may be obtained by sharing among multiple AP groups.
  • the access point device and the station device may perform silence according to the surrounding environment or the interfering BSS.
  • the STA remains silent during the R-TWT SP period indicated in the TWT element contained in all received Beacon frames.
  • the AP remains silent during the R-TWT SP period indicated in the TWT element contained in the Beacon frame received from the neighboring AP.
  • an AP obtains a Beacon frame sent by an adjacent AP through Beacon Request and Response. If the BSSID field of the TWT element in the Beacon frame contains the BSSID of the BSS where the AP is located (or the BSS Color field includes the color information of the BSS where the AP is located), the AP remains silent during the R-TWT SP indicated by the TWT element.
  • an AP shares the established R-TWT information and its corresponding interference BSS information in the BSS where other APs are located by joining a multi-AP group. If the interfering BSS containing the R-TWT information includes the BSS where the AP is located, the AP remains silent during the R-TWT SP period indicated by the R-TWT information.
  • FIG22 shows a schematic block diagram of an access point device 400 according to an embodiment of the present application.
  • the access point device 400 includes:
  • the communication unit 410 is configured to receive first information sent by a first site device, where the first information is used to indicate information of at least one first basic service set BSS, where transmission within the at least one first BSS may interfere with transmission during a service period SP of a restricted target wake-up time R-TWT established between the first site device and the access point device, and the at least one first BSS is an overlapping basic service set OBSS of the BSS where the access point device and the first site device are located;
  • the processing unit 420 is used to establish an R-TWT between the access point device and the first site device according to the first information.
  • the first information includes at least one of the following:
  • the first station device receives strength information of a signal sent by an access point device in the at least one first BSS.
  • the first information is carried in a first request frame, and the first request frame is used to request the establishment of an R-TWT between the first site device and the access point device.
  • the first request frame includes a first target wake-up time TWT element, and the first information is carried in the first TWT element.
  • the first TWT element includes an OBSS information list field, and the OBSS information field is used to indicate the at least one first BSS.
  • the OBSS information list field includes a BSSID size field and/or at least one BSSID field, the BSSID size field is used to indicate the number of BSSID fields included in the OBSS information field, and the BSSID field is used to indicate the ID information of the first BSS.
  • the OBSS information list field includes a BSS color size field and/or at least one BSS color field
  • the BSS color size field is used to indicate the number of BSS color fields included in the OBSS information field
  • the BSS color field is used to indicate the color information of the first BSS.
  • the first TWT element includes an OBSS information list field, and the OBSS list field is used to indicate reception strength information of the at least one first BSS and the first station device to a signal sent by an access point device in the at least one first BSS.
  • the OBSS information list field includes an OBSS information size field and/or at least one OBSS information field, wherein the OBSS information size field is used to indicate the number of OBSS information fields included in the OBSS information field, and the OBSS information field is used to indicate the ID information or color information of the at least one first BSS, and the reception strength information of the first site device to the signal sent by the access point device within the at least one first BSS.
  • the first request frame further includes an OBSS information list existence field, which is used to indicate whether the first request frame includes an OBSS information list field.
  • the first request frame includes a broadcast TWT information field
  • the broadcast TWT information field includes the OBSS information list existence field.
  • the first request frame also includes at least one OBSS R-TWT element for carrying the established R-TWT information within the at least one first BSS, wherein each OBSS R-TWT element is used to carry the established R-TWT information within a first BSS.
  • the first request frame also includes R-TWT information requested by the first site device, wherein the R-TWT requested by the first site device and the R-TWT within the at least one first BSS do not overlap in time.
  • processing unit 420 is further configured to:
  • the established R-TWT information within the at least one first BSS is obtained.
  • the R-TWT information established in the at least one first BSS is acquired by the access point device from an access point device in the at least one first BSS.
  • the R-TWT information established in the at least one first BSS is acquired by the access point device from a beacon frame sent by an access point device in the at least one first BSS.
  • the at least one first BSS includes a BSS where a second access point device is located, and a beacon frame sent by the second access point device includes R-TWT information established between the second access point device and a site device associated with the second access point device.
  • the beacon frame includes a second TWT element, where the second TWT element is used to carry R-TWT information established between the second access point device and a site device associated with the second access point device.
  • the second TWT element is also used to carry information of at least one second BSS, wherein transmission within the at least one second BSS may interfere with transmission during the SP period of the R-TWT established between the second access point device and the site device associated with the second access point device, and the at least one second BSS is the OBSS of the BSS where the second access point device is located.
  • the R-TWT information established in the at least one first BSS is acquired by the access point device from a site device associated with the access point device.
  • the communication unit 410 is further configured to:
  • a second response frame sent by a site device associated with the access point device is received, and the second response frame reports the R-TWT information in the OBSS of the BSS where the site device is located, which is obtained by the site device.
  • the second request frame is a beacon request frame and the second response frame is a beacon response frame.
  • the OBSS of the BSS where the site device is located includes the BSS where a third access point device is located, and the second response frame includes a third TWT element, and the third TWT element is used to carry the R-TWT information established between the third access point device and the site device associated with the third access point device.
  • the third TWT element is also used to carry information of at least one third BSS, wherein transmission within the at least one third BSS may interfere with transmission during the SP period of the R-TWT established between the third access point device and the site device associated with the third access point device.
  • the access point device in the at least one first BSS and the access point device belong to the same group, wherein the access point devices in the same group share the established R-TWT information in the BSS where the access point device is located.
  • the communication unit 410 is further configured to:
  • a first response frame is sent to the first site device, where the first response frame is a response frame to the first request frame, and the first response frame includes target R-TWT information, wherein the R-TWT determined according to the target R-TWT information and the R-TWT within the at least one first BSS do not overlap in time.
  • the communication unit 410 is further configured to:
  • the first BSS set is a BSS where the access point device receiving the beacon frame is located, wherein the beacon frame includes established R-TWT information within the BSS.
  • the communication unit 410 is further configured to:
  • the first R-TWT information is R-TWT information established in a fourth BSS
  • the OBSS of the fourth BSS includes the BSS where the access point device is located.
  • the R-TWT information established between the access point device and the first site device is the same as the R-TWT information established between the access point device and the second site device.
  • the processing unit 420 is further used to parse the beacon frame, obtain the BSSID information of the neighboring AP and the established R-TWT information carried in the TWT element in the beacon frame.
  • the beacon frame may be received by the access point device 400 from a neighboring access point device.
  • the beacon frame may be received by the first station device from a neighboring access point device, and reported to the access point device 400 through the interaction of a beacon request frame and a beacon response frame.
  • the access point device 400 further includes a storage unit configured to store at least one of the following information:
  • the first type of R-TWT information is the first type of R-TWT information
  • Interference BSS information corresponding to the first type of R-TWT information
  • the second type of R-TWT information is the second type of R-TWT information
  • the second type of R-TWT information corresponds to the interference BSS information.
  • transmissions within the first type of R-TWT may be interfered with by transmissions of the access point device, and transmissions within the second type of R-TWT may interfere with transmissions of the access point device.
  • At least one of the first type of R-TWT information, the corresponding BSSID or color information, and the corresponding interference BSS information is acquired by the access point device from a beacon frame sent by a neighboring access point device.
  • At least one of the second type of R-TWT information, the corresponding BSSID or color information, and the corresponding interference BSS information is obtained by the access point device from the associated site device, and the associated site device obtains at least one of the second type of R-TWT information, the corresponding BSSID or color information, and the corresponding interference BSS information from an adjacent access point device.
  • the communication unit may be a communication interface or a transceiver, or an input/output interface of a communication chip or a system on chip.
  • the processing unit may be one or more processors.
  • the access point device 400 may correspond to the first access point device in the method embodiment of the present application, and the above and other operations and/or functions of each unit in the access point device 400 are respectively for implementing the corresponding processes of the first access point device in the method 200 shown in Figures 9 to 21, which will not be repeated here for the sake of brevity.
  • FIG23 is a schematic block diagram of a site device according to an embodiment of the present application.
  • the site device 500 of FIG23 includes:
  • the communication unit 510 is used to send first information to the first access point device, where the first information is used to indicate information of at least one first basic service set BSS, and the transmission within the at least one first BSS may interfere with the transmission during the service period SP of the restricted target wake-up time R-TWT established between the site device and the first access point device.
  • the at least one first BSS is an overlapping basic service set OBSS of the BSS where the first access point device and the site device are located.
  • the first information includes at least one of the following:
  • the station device receives strength information of a signal sent by an access point device in the at least one first BSS.
  • the first information is carried in a first request frame, and the first request frame is used to request to establish an R-TWT between the site device and the first access point device.
  • the first request frame includes a first target wake-up time TWT element, and the first information is carried in the first TWT element.
  • the first TWT element includes an OBSS information list field, and the OBSS information field is used to indicate the at least one first BSS.
  • the OBSS information list field includes a BSSID size field and/or at least one BSSID field, the BSSID size field is used to indicate the number of BSSID fields included in the OBSS information field, and the BSSID field is used to indicate the ID information of the first BSS.
  • the OBSS information list field includes a BSS color size field and/or at least one BSS color field
  • the BSS color size field is used to indicate the number of BSS color fields included in the OBSS information field
  • the BSS color field is used to indicate the color information of the first BSS.
  • the first TWT element includes an OBSS information list field, and the OBSS list field is used to indicate the reception strength information of the at least one first BSS and the station device to the signal sent by the access point device in the at least one first BSS.
  • the OBSS information list field includes an OBSS information size field and/or at least one OBSS information field, wherein the OBSS information size field is used to indicate the number of OBSS information fields included in the OBSS information field, and the OBSS information field is used to indicate the ID information or color information of the at least one first BSS, and the reception strength information of the signal sent by the site device to the access point device within the at least one first BSS.
  • the first request frame further includes an OBSS information list existence field, which is used to indicate whether the first request frame includes an OBSS information list field.
  • the first request frame includes a broadcast TWT information field
  • the broadcast TWT information field includes the OBSS information list existence field.
  • the first request frame also includes at least one OBSS R-TWT element for carrying the established R-TWT information within the at least one first BSS, wherein each OBSS R-TWT element is used to carry the established R-TWT information within a first BSS.
  • the first request frame also includes R-TWT information requested by the site device, wherein the R-TWT requested by the site device and the R-TWT within the at least one first BSS do not overlap in time.
  • the communication unit 510 is further configured to:
  • the R-TWT information established in the at least one first BSS is acquired by the station device from an access point device in the at least one first BSS.
  • the R-TWT information established in the at least one first BSS is acquired by the station device from a beacon frame sent by an access point device in the at least one first BSS.
  • the at least one first BSS includes a BSS where a third access point device is located, and the beacon frame sent by the third access point device includes R-TWT information established between the third access point device and a site device associated with the third access point device.
  • the beacon frame includes a third TWT element, and the third TWT element is used to carry R-TWT information established between the third access point device and a site device associated with the third access point device.
  • the third TWT element is also used to carry information of at least one third BSS, wherein transmission within the at least one third BSS may interfere with transmission during the SP period of the R-TWT established between the third access point device and the site device associated with the third access point device.
  • the second information is sent via a beacon response frame.
  • the communication unit 510 is further configured to:
  • the communication unit 510 is further configured to:
  • the SP period of the R-TWT indicated by the established R-TWT information within the second BSS set remains silent, wherein the second BSS set is the BSS where the access point device from which the site device receives the beacon frame is located.
  • the site device 500 further includes:
  • a processing unit is used to parse the received beacon frame to obtain the BSSID information of the sender of the beacon frame, and the R-TWT information established in the BSS identified by the BSSID information.
  • the site device 500 further includes:
  • a storage unit is used to store the BSSID information of the non-associated access point device and the established R-TWT information in the beacon frame, i.e., the OBSS R-TWT information, when a beacon frame sent by the non-associated access point device is received.
  • the processing unit is further configured to:
  • the stored OBSS R-TWT information determine the time parameters of the R-TWT between the requested site device and the first access point device, such as the start time, duration, period, etc. Avoid conflicts with the SP of the OBSS R-TWT.
  • the communication unit 510 is further configured to:
  • the station device During the SP of the OBSS R-TWT and other R-TWTs in the BSS where the station device is located except the R-TWT established by the station device and the first access point device, remain silent. If the station device holds a TXOP, the station device needs to end the TXOP before the SP of the R-TWT starts.
  • the communication unit may be a communication interface or a transceiver, or an input/output interface of a communication chip or a system on chip.
  • the processing unit may be one or more processors.
  • the site device 500 may correspond to the first site device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the site device 500 are respectively for implementing the corresponding processes of the first site device in the method 200 shown in Figures 9 to 21. For the sake of brevity, they will not be repeated here.
  • Fig. 24 is a schematic structural diagram of a communication device 600 provided in an embodiment of the present application.
  • the communication device 600 shown in Fig. 24 includes a processor 610, and the processor 610 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the communication device 600 may further include a memory 620.
  • the processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present application.
  • the memory 620 may be a separate device independent of the processor 610 , or may be integrated into the processor 610 .
  • the communication device 600 may further include a transceiver 630 , and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices.
  • the transceiver 630 may include a transmitter and a receiver.
  • the transceiver 630 may further include an antenna, and the number of the antennas may be one or more.
  • the communication device 600 may specifically be a first access point device in an embodiment of the present application, and the communication device 600 may implement corresponding processes implemented by the first access point device in various methods in the embodiments of the present application, which will not be described in detail for the sake of brevity.
  • the communication device 600 may specifically be the first site device of the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the first site device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.
  • Fig. 25 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • the chip 700 shown in Fig. 25 includes a processor 710, and the processor 710 can call and run a computer program from a memory to implement the method according to the embodiment of the present application.
  • the chip 700 may further include a memory 720.
  • the processor 710 may call and run a computer program from the memory 720 to implement the method in the embodiment of the present application.
  • the memory 720 may be a separate device independent of the processor 710 , or may be integrated into the processor 710 .
  • the chip 700 may further include an input interface 730.
  • the processor 710 may control the input interface 730 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.
  • the chip 700 may further include an output interface 740.
  • the processor 710 may control the output interface 740 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.
  • the chip may be applied to the first access point device in the embodiment of the present application, and the chip may implement the corresponding processes implemented by the first access point device in each method in the embodiment of the present application, which will not be described in detail for the sake of brevity.
  • the chip can be applied to the first site device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the first site device in each method of the embodiment of the present application, which will not be described here for the sake of brevity.
  • the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.
  • FIG26 is a schematic block diagram of a communication system 900 provided in an embodiment of the present application.
  • the communication system 900 includes an access point device 910 and a station device 920 .
  • the access point device 910 may be used to implement the corresponding functions implemented by the first access point device in the above method
  • the site device 920 may be used to implement the corresponding functions implemented by the first site device in the above method. For the sake of brevity, they are not described here.
  • the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities.
  • each step of the above method embodiment can be completed by the hardware integrated logic circuit in the processor or the instruction in the form of software.
  • the above processor can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • the methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general processor can be a microprocessor or the processor can also be any conventional processor, etc.
  • the steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor can be combined to perform.
  • the software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiment of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories.
  • the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory.
  • the volatile memory can be a random access memory (RAM), which is used as an external cache.
  • RAM Direct Rambus RAM
  • SRAM Static RAM
  • DRAM Dynamic RAM
  • SDRAM Synchronous DRAM
  • DDR SDRAM Double Data Rate SDRAM
  • ESDRAM Enhanced SDRAM
  • SLDRAM Synchlink DRAM
  • DR RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiment of the present application is intended to include but not limited to these and any other suitable types of memory.
  • An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.
  • the computer-readable storage medium may be applied to the first access point device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the first access point device in the various methods in the embodiments of the present application, which will not be described in detail here for the sake of brevity.
  • the computer-readable storage medium may be applied to the first site device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the first site device in the various methods of the embodiments of the present application, which will not be described in detail here for the sake of brevity.
  • An embodiment of the present application also provides a computer program product, including computer program instructions.
  • the computer program product may be applied to the first access point device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the first access point device in the various methods in the embodiments of the present application, which will not be described in detail here for the sake of brevity.
  • the computer program product may be applied to the first site device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the first site device in the various methods of the embodiments of the present application, which will not be described in detail here for the sake of brevity.
  • the embodiment of the present application also provides a computer program.
  • the computer program may be applied to the first access point device in the embodiment of the present application.
  • the computer program runs on a computer, the computer executes the corresponding processes implemented by the first access point device in the various methods in the embodiment of the present application. For the sake of brevity, they are not described here.
  • the computer program may be applied to the first site device in the embodiment of the present application.
  • the computer program runs on a computer, the computer executes the corresponding processes implemented by the first site device in the various methods of the embodiment of the present application. For the sake of brevity, they are not described here.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.
  • Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application 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 are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art.
  • the computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, and other media that can store program codes.

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Abstract

一种无线通信的方法、接入点设备和站点设备，该方法包括：第一接入点设备接收第一站点设备发送的第一信息，所述第一信息用于指示至少一个第一基本服务集BSS的信息，所述至少一个第一BSS内的传输可能对所述第一站点设备和所述第一接入点设备之间建立的受限的目标唤醒时间R-TWT的服务周期SP期间的传输产生干扰，所述至少一个第一BSS是所述第一接入点设备和所述第一站点设备所在BSS的重叠基本服务集OBSS；所述第一接入点设备根据所述第一信息，建立所述第一接入点设备和所述第一站点设备之间的R-TWT。

Description

无线通信的方法、接入点设备和站点设备 技术领域
本申请实施例涉及通信领域，具体涉及一种无线通信的方法、接入点设备和站点设备。
背景技术
在802.11ax中，提出一种定时唤醒节能模式，即目标唤醒时间(Target Wake Time，TWT)。为了减少站点(STATION，STA)之间的竞争和使用节能模式的STA需要唤醒的时间量，TWT提出了STA只在预定义的服务周期(Service Period，SP)期间醒来与接入点(Access Point，AP)进行帧交互，在SP结束后，继续休眠。
为了满足低时延和高清视频流等应用场景的数据传输需求，引入了受限的目标唤醒时间(Restricted Target Wake Time，R-TWT)，它能够使用增强的媒介访问保护和资源预定机制来交付时延敏感业务。但是，如果R-TWT SP内的数据传输存在干扰，则可能导致时延敏感业务无法按时交付。因此，如何进行R-TWT建立以降低R-TWT SP内的干扰是一项亟需解决的问题。
发明内容
本申请提供了一种无线通信的方法、接入点设备和站点设备，有利于降低建立的R-TWT内的干扰。
第一方面，提供了一种无线通信的方法，包括：第一接入点设备接收第一站点设备发送的第一信息，所述第一信息用于指示至少一个第一基本服务集BSS的信息，所述至少一个第一BSS内的传输可能对所述第一站点设备和所述第一接入点设备之间建立的受限的目标唤醒时间R-TWT的服务周期SP期间的传输产生干扰，所述至少一个第一BSS是所述第一接入点设备和所述第一站点设备所在BSS的重叠基本服务集OBSS；所述第一接入点设备根据所述第一信息，建立所述第一接入点设备和所述第一站点设备之间的R-TWT。
第二方面，提供了一种无线通信的方法，包括：第一站点设备向第一接入点设备发送第一信息，所述第一信息用于指示至少一个第一基本服务集BSS的信息，所述至少一个第一BSS内的传输可能对所述第一站点设备和所述第一接入点设备之间建立的受限的目标唤醒时间R-TWT的服务周期SP期间的传输产生干扰，所述至少一个第一BSS是所述第一接入点设备和所述第一站点设备所在BSS的重叠基本服务集OBSS。
第三方面，提供了一种接入点设备，用于执行上述第一方面或其各实现方式中的方法。
具体地，该接入点设备包括用于执行上述第一方面或其各实现方式中的方法的功能模块。
第四方面，提供了一种站点设备，用于执行上述第二方面或其各实现方式中的方法。
具体地，该站点设备包括用于执行上述第二方面或其各实现方式中的方法的功能模块。
第五方面，提供了一种接入点设备，包括处理器和存储器。该存储器用于存储计算机程序，该处理器用于调用并运行该存储器中存储的计算机程序，执行上述第一方面或其各实现方式中的方法。
第六方面，提供了一种站点设备，包括处理器和存储器。该存储器用于存储计算机程序，该处理器用于调用并运行该存储器中存储的计算机程序，执行上述第二方面或其各实现方式中的方法。
第七方面，提供了一种芯片，用于实现上述第一方面至第二方面中的任一方面或其各实现方式中的方法。
具体地，该芯片包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有该装置的设备执行如上述第一方面至第二方面中的任一方面或其各实现方式中的方法。
第八方面，提供了一种计算机可读存储介质，用于存储计算机程序，该计算机程序使得计算机执行上述第一方面至第二方面中的任一方面或其各实现方式中的方法。
第九方面，提供了一种计算机程序产品，包括计算机程序指令，所述计算机程序指令使得计算机执行上述第一方面至第二方面中的任一方面或其各实现方式中的方法。
第十方面，提供了一种计算机程序，当其在计算机上运行时，使得计算机执行上述第一方面至第二方面中的任一方面或其各实现方式中的方法。
通过上述技术方案，站点设备可以向接入点设备上报该站点设备的干扰BSS信息(即OBSS信息)，进一步地，接入点设备可以根据该干扰BSS内已建立的R-TWT建立站点设备和接入点设备之间的R-TWT，有利于降低干扰BSS内已建立的R-TWT对站点设备和接入点设备之间的R-TWT内的传输的干扰。
附图说明
图1是本申请实施例提供的一种通信系统架构的示意性图。
图2是本申请实施例提供的一种TWT元素的格式示意图。
图3是本申请实施例提供的一种TWT元素中的Control字段的格式示意图。
图4是本申请实施例提供的一种Broadcast TWT Parameter set字段的式示意图。
图5是本申请实施例提供的一种Request Type字段的式示意图。
图6是本申请实施例提供的一种Broadcast TWT Info字段的式示意图。
图7是本申请实施例提供的一种一种R-TWT的建立和使用过程的示意性图。
图8是本申请实施例的一种应用场景的示意图。
图9是本申请实施例提供的一种无线通信的方法的示意性流程图。
图10是本申请实施例提供的一种OBSS信息列表字段的格式示意图。
图11是本申请实施例提供的另一种OBSS信息列表字段的格式示意图。
图12是本申请实施例提供的又一种OBSS信息列表字段的格式示意图。
图13是本申请实施例提供的一种OBSS R-TWT信息的获取方式的示意图。
图14是本申请实施例提供的另一种OBSS R-TWT信息的获取方式的示意图。
图15是本申请实施例提供的又一种OBSS R-TWT信息的获取方式的示意图。
图16是本申请实施例提供的又一种OBSS R-TWT信息的获取方式的示意图。
图17是根据本申请实施例的进行R-TWT的建立的示意性图。
图18是根据本申请实施例的进行R-TWT的建立的示意性图。
图19是根据本申请实施例的进行R-TWT的建立的示意性图。
图20是根据本申请实施例的静默实例的示意性图。
图21是根据本申请实施例的R-TWT分组收益的示意性图。
图22是根据本申请实施例提供的一种接入点设备的示意性框图。
图23是根据本申请实施例提供的站点设备的示意性框图。
图24是根据本申请实施例提供的一种通信设备的示意性框图。
图25是根据本申请实施例提供的一种芯片的示意性框图。
图26是根据本申请实施例提供的一种通信系统的示意性框图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。针对本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请实施例的技术方案可以应用于各种通信系统，例如：无线局域网(Wireless Local Area Networks，WLAN)、无线保真(Wireless Fidelity，WiFi)或其他通信系统等。
示例性的，本申请实施例应用的通信系统100如图1所示。该通信系统100可以包括接入点(Access Point，AP)110，以及通过接入点110接入网络的站点(STATION，STA)120。
在一些场景中，AP或称AP STA，即在某种意义上来说，AP也是一种STA。
在一些场景中，STA或称非AP STA(non-AP STA)。
通信系统100中的通信可以是AP与non-AP STA之间的通信，也可以是non-AP STA与non-AP STA之间的通信，或者STA和peer STA之间的通信，其中，peer STA可以指与STA对等通信的设备，例如，peer STA可能为AP，也可能为non-AP STA。
AP相当于一个连接有线网和无线网的桥梁，主要作用是将各个无线网络客户端连接到一起，然后将无线网络接入以太网。AP设备可以是带有WiFi芯片的终端设备(如手机)或者网络设备(如路由器)。
应理解，STA在通信系统中的角色不是绝对的，例如，在一些场景中，手机连接路由的时候，手机是non-AP STA，手机作为其他手机的热点的情况下，手机充当了AP的角色。
AP和non-AP STA可以是应用于车联网中的设备，物联网(Internet Of Things，IoT)中的物联网节点、传感器等，智慧家居中的智能摄像头，智能遥控器，智能水表电表等，以及智慧城市中的传感器等。
在一些实施例中，non-AP STA可以支持802.11be制式。non-AP STA也可以支持802.11ax、802.11ac、802.11n、802.11g、802.11b及802.11a等多种当前以及未来的802.11家族的无线局域网(wireless local area networks，WLAN)制式。
在一些实施例中，AP可以为支持802.11be制式的设备。AP也可以为支持802.11ax、802.11ac、 802.11n、802.11g、802.11b及802.11a等多种当前以及未来的802.11家族的WLAN制式的设备。
在本申请实施例中，STA可以是支持WLAN或WiFi技术的手机(Mobile Phone)、平板电脑(Pad)、电脑、虚拟现实(Virtual Reality，VR)设备、增强现实(Augmented Reality，AR)设备、工业控制(industrial control)中的无线设备、机顶盒、无人驾驶(self driving)中的无线设备、车载通信设备、远程医疗(remote medical)中的无线设备、智能电网(smart grid)中的无线设备、运输安全(transportation safety)中的无线设备、智慧城市(smart city)中的无线设备或智慧家庭(smart home)中的无线设备、无线通信芯片/ASIC/SOC/等。
WLAN技术可支持频段可以包括但不限于：低频段(例如2.4GHz、5GHz、6GHz)、高频段(例如60GHz)。
图1示例性地示出了一个AP STA和两个non-AP STA，可选地，该通信系统100可以包括多个AP STA以及包括其它数量的non-AP STA，本申请实施例对此不做限定。
应理解，本申请实施例中网络/系统中具有通信功能的设备可称为通信设备。以图1示出的通信系统100为例，通信设备可包括具有通信功能的接入点110和站点120，接入点110和站点120可以为上文所述的具体设备，此处不再赘述；通信设备还可包括通信系统100中的其他设备，例如网络控制器、网关等其他网络实体，本申请实施例中对此不做限定。
应理解，本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
应理解，在本申请的实施例中提到的“指示”可以是直接指示，也可以是间接指示，还可以是表示具有关联关系。举例说明，A指示B，可以表示A直接指示B，例如B可以通过A获取；也可以表示A间接指示B，例如A指示C，B可以通过C获取；还可以表示A和B之间具有关联关系。
在本申请实施例的描述中，术语“对应”可表示两者之间具有直接对应或间接对应的关系，也可以表示两者之间具有关联关系，也可以是指示与被指示、配置与被配置等关系。
本申请实施例中，"预定义"可以通过在设备(例如，包括接入点和站点)中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现，本申请对于其具体的实现方式不做限定。比如预定义可以是指协议中定义的。
为便于理解本申请实施例的技术方案，以下对本申请相关的广播(Broadcast)目标唤醒时间(Target Wake Time，TWT)进行说明。
TWT是在802.11ax中提出的一种定时唤醒节能模式。为了减少STA之间的竞争和使用节能模式的STA需要唤醒的时间量，TWT提出了STA只在预定义的服务周期(Service Period，SP)期间醒来与AP进行帧交互，在SP结束后，继续休眠。
Broadcast TWT是一种由AP负责管理的TWT节能模式。在Broadcast TWT中，存在加入组和离开组的交互动作，STA需要向AP申请加组才可以使用该Broadcast TWT，加组的交互动作是通过在和AP交互的管理帧中携带TWT元素(element)完成的，其中，该TWT元素用于携带请求加入的Broadcast TWT对应的Broadcast TWT参数信息。当STA完成加组后，STA会按照最近接收到的TWT服务周期(Service Period，SP)进行工作，这一类型的STA被叫做“TWT调度的STA(TWT Scheduled STA)”，AP被称为“TWT调度AP(TWT Scheduling AP)”。在该机制中，TWT SP是由AP宣告，通常AP会在每一个信标(Beacon)帧中宣告该AP与其关联的STA之间已经建立的TWT SP。STA在TWT SP开始后苏醒，AP会发送广播的触发(Trigger)帧，发现哪些STA正在处于苏醒状态，并向这些STA发送数据帧。当AP发送完成后，STA进入休眠状态，直到下一次Broadcast TWTSP的时间到达。
以下结合图2至图6，对TWT元素的格式进行说明。
图2是一种TWT元素的格式示意图。
如图2所示，该TWT元素包括以下字段：
元素ID(Element ID)字段、长度(Length)字段、控制(Control)字段、TWT参数信息(TWT Parameter Information)字段，用于承载TWT参数信息。示例性地，上述字段对应的字节数分别为：1、1、1、可变(Variable)。
图3是TWT元素中的Control字段的示意性格式图。
如图3所示，Control字段可以包括如下字段：
邻居发现协议(Neighbor Discovery Protocol，NDP)寻呼记录(NDP Paging Indicator)字段、应答器PM模式(Responder PM Mode)字段、协商类型(Negotiation Type)字段、TWT信息帧禁用(TWT  Information Frame Disable)字段、唤醒持续时间单位(Wake Duration Unit)字段、链路标识位图存在字段(Link ID Bitmap Present，或称Link ID Present)字段、保留(Reserved)字段。
在一些实施例中，Negotiation Type字段的高位(即B3)为广播(Broadcast)字段，用于指示该TWT元素是否为Broadcast TWT元素。例如，Broadcast字段设置为1，表示该TWT元素是Broadcast TWT元素。Negotiation Type字段取值为2用于广播TWT通告，取值为3用于广播TWT成员管理。
在一些实施例中，在控制字段中的Broadcast字段取值为1(即该TWT元素为Broadcast TWT元素)时，TWT元素中的TWT Parameter Information字段用于携带Broadcast TWT参数信息。
在一些实施例中，Wake Duration Unit字段表示设置TWT长度(Duration)的最小时间单位。
作为示例，该Wake Duration Unit字段设置为0，表示最小时间单位为256微秒；Wake Duration Unit字段设置为1，表示最小时间单位为TU。
在一些实施例中，TWT元素中的TWT Parameter Information字段可以包含一个或多个广播TWT参数集(Broadcast TWT parameter set)字段。
图4是一种Broadcast TWT Parameter set字段的示例性格式图。
如图4所示，该Broadcast TWT Parameter set字段包括如下至少一个字段：
请求类型(Request Type)字段、目标唤醒时间(Target Wake Time)字段、标准最小TWT唤醒长度(Nominal Minimum TWT Wake Duration)字段、TWT唤醒时间间隔尾数(TWT Wake Interval Mantissa)字段、广播TWT信息(Broadcast TWT Info)字段，受限的TWT流信息(Restricted TWT Traffic Info)(可选)。
进一步地，如图5所示，请求类型(Request Type)字段包括如下至少一个字段：
TWT请求(TWT Request)字段、TWT建立命令(TWT Setup Command)字段、触发(Trigger)字段、最后一个广播参数设置(Last Broadcast Parameter Set)字段、流类型(Flow Type)字段、广播TWT建议(Broadcast TWT Recommendation)、TWT唤醒时间间隔指数(TWT Wake Interval Exponent)、预留位。
在一些实施例中，TWT Request字段设置为1，表示发送携带该TWT element的帧的STA为TWT scheduled STA，设置为0，表示发送携带该TWT element的帧的STA为TWT scheduling AP。
在一些实施例中，TWT Setup Command字段：用于STA与AP在协商TWT参数时的TWT建立命令的类型。例如，TWT Setup Command字段取值为0表示请求TWT(Request TWT)类型，只在TWT Request字段值为1时有效，表示TWT scheduled STA请求加入TWT。TWT Setup Command字段取值为1表示建议TWT(Suggest TWT)类型，只在TWT Request字段值为1时有效。TWT Setup Command字段取值为2表示需求TWT(Demand TWT)类型，只在TWT Request字段值为1时有效。TWT Setup Command字段取值为2表示接受TWT(Accept TWT)类型，只在TWT Request字段值为0时有效，表示TWT scheduling AP接受由TWT Scheduled STA在TWT元素中指示的TWT参数。也可用于未经请求的TWT响应。
在一些实施例中，Trigger字段用于指示是否需要发送Trigger帧。例如，设置为1，表示在TWT SP中至少发送一次触发帧。
在一些实施例中，Last Broadcast Parameter Set字段用于指示该Broadcast TWT Parameter set字段是否为该TWT Parameter Information字段中的最后一个Broadcast TWT Parameter set字段。
在一些实施例中，Broadcast TWT Recommendation字段指示在TWT SP期间由TWT scheduled STA和scheduling AP发送的帧类型的推荐值。
在一些实施例中，当TWT element中的Broadcast TWT Recommendation字段等于4时，该Broadcast TWTelement为R-TWT element。此情况下，TWT element中携带的TWT参数信息或称R-TWT参数信息。
在一些实施例中，TWT Wake Interval Mantissa字段和TWT Wake Interval Exponent字段，用于确定TWT唤醒间隔(TWT Wake Interval)，该TWT唤醒间隔表示TWT scheduled STA在连续的TWT SP之间经过的平均时间。例如，TWT Wake Interval＝(TWT Wake Interval Mantissa)*2^(TWT Wake Interval Exponent)微秒。
在一些实施例中，Target Wake Time字段：当该TWT element由TWT scheduled STA发送且TWT Setup command字段为Suggest TWT或Demand TWT时，该Target Wake Time字段的含义是一个无符号整数，对应于STA请求唤醒的时间同步功能(Time Synchronization function，TSF)时间(即TWT  SP的开始时间)。当该TWT element由TWT scheduled STA发送且TWT Setup command字段为Request TWT时，该Target Wake Time字段的取值为0。
在一些实施例中，Nominal Minimum TWT Wake Duration字段表示以Wake Duration Unit字段所指示的值为单位来表示TWT scheduled STA需要的TWT SP的最小时间。
进一步地，如图6所示，Broadcast TWT Info字段包括如下至少一个字段：
Broadcast TWT标识(Broadcast TWT ID)字段，与AP的MAC地址共同标识唯一的Broadcast TWT。
Broadcast TWT持续性(Broadcast TWT Persistance)字段，用于指示该Broadcast TWT参数信息存在(或者说，有效)的TBTT的数量。其中，Broadcast TWT参数信息存在期间的信标间隔的数量等于Broadcast TWT Persistence字段的取值加1，该字段取值为255表示该TWT长期存在，直到该TWT被其他手段终止，该字段取值为其他值则表示该TWT在有限的时间内存在。
在一些实施例中，每个Broadcast TWT由<Broadcast TWT ID，MAC地址>元组唯一标识，其中，Broadcast TWT ID是Broadcast TWT ID字段的值，并且Broadcast TWT ID大于0，MAC地址是TWT scheduling AP的MAC地址。
在一些实施例中，Broadcast TWT可以采用如下方式建立：
方式1：STA通过在关联请求/重关联请求(Association/Reassociation Request)或TWT建立帧(TWT Setup frame)中包含协商类型字段等于3的TWT元素，主动向AP发起Broadcast TWT的建立请求。在TWT元素中的Broadcast TWT parameter set字段中指示STA请求加入的Broadcast TWT对应的Broadcast TWT ID。
方式2：AP可以发起未经请求的TWT响应。例如AP可以在关联响应/重关联响应(Association/Reassociation Response)或TWT setup frame中包括协商类型字段等于3的TWT元素，给接收方STA分配Broadcast TWT。其中，该接收方STA支持Broadcast TWT。例如，STA向AP上报能力信息时，该能力信息中的Broadcast TWT支持(Broadcast TWT Support)字段设置为1(表示STA支持Broadcast TWT)。
在一些实施例中，TWT scheduling AP可以通告该AP所在的基本服务集(Basic Service Set，BSS)内已建立的Broadcast TWT，即Broadcast TWT调度表。例如，该Broadcast TWT调度表可以携带在协商类型字段设置为2的TWT元素的帧中通告，例如，通过Beacon帧通告。
在一些实施例中，TWT scheduling AP可以包括支持Broadcast TWT(例如dot11TWTOptionActivated等于true)的高效率(High Efficiency，HE)AP，TWT scheduled STA可以是non-AP HE STA。该non-AP HE STA可以向AP发送HE能力信息，其中，该HE能力信息携带在HE能力元素中。该HE能力元素中包括Broadcast TWT Support字段，该Broadcast TWT Support字段设置为1表示该non-AP HE STA支持Broadcast TWT，则该non-AP HE STA可以接收作为TWT scheduling AP的HE AP发送的携带Broadcast TWT元素的帧。
在一些场景中，随着低时延和高清视频流应用场景数量的增加，数据传输对网络时延和网络容量提出了更高的要求，比如实时视频流、虚拟现实(Virtual Reality，VR)、增强现实(Augmented Reality，AR)等应用场景，在一个周期内生成大量数据，并且需要在较短的时间内发送出去。而发送设备在短时间内可能无法竞争到信道的使用权，需要一种可预见性的稳定服务时间完成时延敏感数据的传输。故引入了一种类型的TWT，即R-TWT，它能够使用增强的媒介访问保护和资源预定机制来交付时延敏感流量。即，R-TWT可以认为是在TWT的基础上定义的一种新的Broadcast TWT Recommendation。
在一些实施例中，当Broadcast TWT Recommendation字段等于4时，Broadcast TWT parameter set字段中所承载的Broadcast TWT参数集为R-TWT参数集。此情况下，该Broadcast TWT parameter set字段为R-TWT参数集字段。
在一些实施例中，当TWT元素仅包括R-TWT参数集字段时，该TWT元素或称R-TWT元素。
在一些实施例中，当AP所在的BSS内建立了或修改了R-TWT时，AP可以进行R-TWT调度表的宣告。例如，在管理帧(比如信标帧)包含Broadcast TWT元素，该Broadcast TWT元素用于宣告更新的R-TWT的调度信息。
在一些实施例中，TWT的建立可以通过AP和STA之间交互TWT建立帧(TWT Setup frame)实现。例如，STA可以向AP发送TWT建立请求帧请求TWT SP的建立，AP可以向STA回复TWT建立响应帧指示请求的TWT SP的状态，例如同意该TWT SP的建立还是拒绝TWT SP的建立。
图7是一种R-TWT的建立和使用过程的示意性图。在图7的示例中，STA1和AP之间未建立R-TWT，则STA1可以向AP发送R-TWT请求帧，用于请求建立AP和STA1之间的R-TWT，其中， 该R-TWT请求帧中包括STA1请求建立的R-TWT参数集，AP回复R-TWT响应帧同意该R-TWT的建立。在R-TWT建立中，STA1被称为“R-TWT调度的STA(R-TWT Scheduled STA)”，AP被称为“R-TWT调度AP(R-TWT Scheduling AP)”。
在该示例中，STA1和AP之间建立的R-TWT和STA2和AP之间建立的R-TWT可以相同，即STA1可以加入STA2和AP之间已建立的R-TWT，记为R-TWT 1。
在一些实施例中，R-TWT请求帧中可以包括R-TWT元素，该R-TWT元素中用于携带STA1请求建立的R-TWT参数集。
进一步地，AP在TBTT时刻发送Beacon帧。该Beacon中包括R-TWT元素，在该R-TWT元素中指示R-TWT 1，例如，其中，在广播R-TWT 1 SP期间，AP向R-TWT scheduled STA发送下行时延敏感流量。STA 1和STA 2接收Beacon。STA 1和STA 2在随后的R-TWT 1 SP内接收AP发送的下行数据，例如下行多用户物理层协议数据单元(Downlink Multi-User Physical layer protocol data unit，DL MU PPDU)，进一步向AP回复块确认(Block Ack，BA)帧。
表1是TWT建立帧的帧格式示例。
表1
Figure PCTCN2022127457-appb-000001
其中，该TWT元素的格式参考图2至图6中的相关说明。
在一些实施例中，在R-TWT SP内STA进行信道接入需要遵循一定的规则。
例如，持有传输机会(transmission opportunity，TXOP)的STA，需要在关联的AP所通告的R-TWT SP的开始时间之前释放该TXOP，或者说，结束该TXOP。其中，该STA为支持R-TWT(例如dot11RestrictedTWTOptionImplemented设置为true)的STA，例如支持R-TWT的non-AP极高吞吐量(Extreme High Throughput，EHT)STA。
使用相同的R-TWT的STA可以认为属于一个分组，在一个BSS内，不在一个分组内的STA需要在其他分组所使用的R-TWT SP内进行退避。
例如，一个BSS内建立的R-TWT包括R-TWT 1和R-TWT 2，其中，STA1和STA2属于R-TWT 1对应的分组，STA3和STA4属于R-TWT 2对应的分组，则在R-TWT 1 SP内STA3和STA4需要进行退避，即不进行数据传输，在R-TWT 2 SP内STA1和STA2需要进行退避，即不进行数据传输。
但是在实际应用中，其他BSS内的设备的数据传输也可能对本BSS内的设备在R-TWT SP的数据传输产生干扰。
如图8所示，AP1与STA11和STA12关联，AP2与STA21和STA22关联。假设AP1与STA11之间建立了R-TWT，记为R-TWT 1，则在R-TWT 1 SP期间，若STA12持有TXOP使用权，则STA12需要在R-TWT 1 SP开始之前主动结束该TXOP，以避免对STA11在R-TWT 1 SP内的数据传输造成干扰。
但是，在R-TWT 1 SP期间，AP2所在BSS内的设备仍能正常竞争信道，因此，AP2所在BSS内的设备在此期间的数据传输可能会对STA11的时延敏感数据传输造成干扰。例如若在R-TWT 1 SP期间，STA22持有TXOP，正在与AP2进行通信，则会对STA11的数据接收造成干扰。
并且，由于AP2和AP1不能获知对方的BSS内建立的R-TWT，可能存在STA22和与AP2建立的R-TWT与AP1和STA11之间建立的R-TWT在时间上产生重叠的问题，进而导致两个BSS内的数据传输互相干扰。
因此，如何进行R-TWT建立以降低对R-TWT内的数据传输的干扰是一项亟需解决的问题。
为便于理解本申请实施例的技术方案，以下通过具体实施例详述本申请的技术方案。以下相关技术作为可选方案与本申请实施例的技术方案可以进行任意结合，其均属于本申请实施例的保护范围。本申请实施例包括以下内容中的至少部分内容。
图9是根据本申请实施例的无线通信的方法200的示意性交互图，如图9所示，该方法200包括如下内容：
S210，第一接入点设备接收第一站点设备发送的第一信息，所述第一信息用于指示至少一个第一BSS的信息，至少一个第一BSS内传输可能对第一站点设备和所述第一接入点设备之间建立的R-TWT的SP期间的传输产生干扰。
在一些实施例中，第一接入点设备可以根据第一信息，建立第一接入点设备和第一站点设备之间的R-TWT。
在一些实施例中，根据第一信息建立的第一AP和第一STA之间的R-TWT和所述至少一个第一BSS内已建立的R-TWT在时间上不重叠。
在本申请实施例中，为便于区分和描述，将根据第一信息建立的第一AP和第一STA之间的R-TWT记为目标R-TWT，将至少一个第一BSS内已建立的R-TWT记为OBSS R-TWT。
在一些实施例中，目标R-TWT和OBSS R-TWT在时间上不重叠可以指目标R-TWT的SP和OBSS R-TWT的SP在时间上不重叠。类似地，其他两个R-TWT或更多个R-TWT在时间上不重叠可以作类似解释。
在一些实施例中，第一站点设备是非AP STA(non-AP STA)，或称第一STA，第一non-AP STA。
在一些实施例中，第一接入点设备是AP STA，或称第一AP，第一AP STA。
在本申请实施例中，除非特别说明，接入点设备、AP均指AP STA，站点设备、STA均指non-AP STA。
在一些实施例中，第一AP和第一STA可以是多链路设备(Multi-Link Device，MLD)。
即，第一信息可以用于多链路设备之间的R-TWT的建立。
在另一些实施例中，第一AP和第一STA可以是单链路设备。
即，第一AP和第一STA可以用于单链路设备之间的R-TWT的建立。
在一些实施例中，第一接入点设备是第一站点设备关联的接入点设备。即第一接入点设备和第一站点设备属于同一BSS。
在一些实施例中，所述至少一个第一BSS可以是所述第一AP所在BSS的重叠的基本服务集(Overlapping Basic Service Set，OBSS)。即，第一BSS和第一AP所在BSS存在重叠。
在一些实施例中，第一AP和/或第一STA处于OBSS内。换言之，第一AP是OBSS设备和/或第一STA是OBSS设备。其中，OBSS设备可以指处于OBSS内的设备，该OBSS设备可以接收到多个BSS内的信号，因此，可能受到该OBSS设备所在BSS之外的其他BSS内的信号的干扰。
在一些场景中，第一AP所在的BSS为目标BSS，第一AP位于第一BSS和目标BSS重叠的区域内(即第一AP是OBSS设备)，则第一AP可以接收到第一BSS内的AP与其关联的STA之间的数据传输，该数据传输会对第一AP和第一STA之间的传输产生干扰，因此，在建立第一AP和第一STA之间的R-TWT时，结合第一BSS内的已建立的R-TWT信息，例如，对第一BSS内的已建立的R-TWT进行退避，有利于降低第一BSS内的传输对该第一AP和第一STA之间的R-TWT的SP期间的传输的干扰。
在另一些场景中，第一AP所在的BSS为目标BSS，第一STA位于第一BSS和目标BSS重叠的区域内(即第一STA是OBSS设备)，则第一STA可以接收到第一BSS内的AP与其关联的STA之间的数据传输，该数据传输会对第一AP和第一STA之间的传输产生干扰，因此，在建立第一AP和第一STA之间的R-TWT时，结合第一BSS内的已建立的R-TWT信息，例如，对第一BSS内的已建立的R-TWT进行退避，有利于降低第一BSS内的传输对该第一AP和第一STA之间的R-TWT的SP期间的传输的干扰。
在又一些场景中，第一AP所在的BSS为目标BSS，第一STA和第一AP均位于第一BSS和目标BSS重叠的区域内(即第一STA和第一AP均是OBSS设备)，则第一STA和第一AP可以接收到第一BSS内的AP与其关联的STA之间的数据传输，该数据传输会对第一AP和第一STA之间的传输产生干扰，因此，在建立第一AP和第一STA之间的R-TWT时，结合第一BSS内的已建立的R-TWT信息，例如，对第一BSS内的已建立的R-TWT进行退避，有利于降低第一BSS内的传输对该第一AP和第一STA之间的R-TWT的SP期间的传输的干扰。
在一些实施例中，所述至少一个第一BSS可以认为是第一STA的干扰BSS或OBSS，即，第一STA位于第一BSS和目标BSS内，因此，所述第一BSS内的传输可能对第一STA和第一AP之间的传输带来干扰)。或者，也可以理解为所述至少一个第一BSS是第一STA和第一AP之间的R-TWT对应的干扰BSS，即，所述至少一个第一BSS内的传输可能对第一STA和第一AP之间建立的R-TWT的SP期间的传输产生干扰。
在一些实施例中，第一STA可以通过接收帧(例如信标帧)确定第一STA的干扰BSS。
例如，若第一STA接收到其他BSS(即非第一STA所在BSS)内的AP发送的帧，则第一STA可以认为该BSS为第一STA的干扰BSS。
又例如，第一STA可以对AP发送的信号(例如前导码信号)进行测量，若信号的接收强度大于第一阈值，并且该信号不是来自第一STA的关联AP，则可以确定发送该信号的AP所在的BSS为第 一STA的干扰BSS。
可选地，这里的信号的接收强度可以是接收的信号强度指示(Received Signal Strength Indication，RSSI)。
在一些实施例中，所述第一信息包括以下中的至少一项：
所述至少一个第一BSS的标识ID信息(例如BSSID)或所述第一BSS的颜色信息(例如，BSS Color)；
所述至少一个第一BSS内的已建立的R-TWT信息；
所述第一站点设备对所述至少一个第一BSS内的接入点设备所发送信号的接收强度信息。
应理解，以上仅以采用BSSID或BSS Color标识BSS为例进行说明，在其他实施例中，也可以采用能够唯一标识BSS的其他信息来标识该BSS，本申请并不限于此。
在一些实施例中，所述至少一个第一BSS内的已建立的R-TWT信息可以包括具体的R-TWT参数，例如图4至图6中所示例的TWT参数。作为示例，目标唤醒时间的取值，标准最小TWT唤醒长度、TWT唤醒时间间隔等。该R-TWT参数用于确定R-TWT的SP的时间信息，例如开始时间，时长和周期。
在另一些实施例中，所述至少一个第一BSS内的已建立的R-TWT信息可以包括R-TWT参数对应的标识信息，例如R-TWT ID，其中，该R-TWT ID和AP的MAC地址共同标识唯一的R-TWT。此情况下，第一STA可以不必携带具体的R-TWT参数有利于降低信令开销。
在一些实施例中，所述第一STA对所述至少一个第一BSS内的AP所发送信号的接收强度信息可以指第一STA对第一BSS内的AP所发送信号的接收强度信息，例如，RSSI信息。该第一STA对第一BSS内的AP所发送信号的接收强度可以反映该第一BSS内的信号对于该第一STA的干扰情况，接收强度大可以认为对第一STA的干扰较大，反之干扰较小。在建立第一AP和第一STA之间的R-TWT时，结合接收强度较大的第一BSS内的已建立的R-TWT，有利于降低该第一BSS内的已建立的R-TWT内的传输对该第一AP和第一STA之间的R-TWT内的传输的干扰。
在一些实施例中，RSSI可以是第一STA对接收到的物理层前导码进行测量得到的。
应理解，本申请并不限定用于承载所述第一信息的帧，其可以通过STA向AP发送的帧承载，例如包括但不限于关联请求(Association Request)帧，重关联请求(Reassociation Request)帧，认证请求帧，探测响应(Probe Response)帧，TWT建立请求帧等。
在一些实施例中，所述第一信息携带在第一请求帧中，所述第一请求帧用于请求建立所述第一站点设备和所述第一接入点设备之间的R-TWT。即，第一请求帧可以是TWT建立请求帧，或称R-TWT建立请求帧，TWT建立帧。
第一STA在发起R-TWT的建立请求时，向第一AP指示该第一STA的干扰BSS信息，这样，第一AP在建立二者之间的R-TWT时，有利于规避该干扰BSS内的已建立的R-TWT，降低第一BSS内的已建立的R-TWT内的数据传输对该第一AP和第一STA之间的R-TWT的SP期间的数据传输的干扰。
在另一些实施例中，第一请求帧可以是关联请求帧，重关联请求帧，认证请求帧等，本申请对此不作限定。
在一些实施例中，所述第一请求帧还包括所述第一STA请求建立的R-TWT参数。例如，目标唤醒时间，标准最小TWT唤醒长度、TWT唤醒时间间隔等。该R-TWT参数用于确定第一AP和第一STA之间的R-TWT的SP的时间信息，例如开始时间，时长和周期。
在一些实施例中，根据第一STA请求建立的R-TWT参数确定的R-TWT和所述至少一个第一BSS内的已建立R-TWT在时间上不重叠，或者说，不冲突。即，第一STA请求的R-TWT参数避开了第一STA的干扰BSS内的已建立的R-TWT。
在本申请一些实施例中，所述方法200还包括：
所述第一接入点设备向所述第一站点设备发送第一响应帧，所述第一响应帧是所述第一请求帧的响应帧。
可选地，所述第一响应帧用于指示同意或拒绝所述第一请求帧请求建立的R-TWT。
可选地，第一响应帧可以携带R-TWT参数，用于建立第一AP和第一STA之间的R-TWT。
可选地，第一响应帧中携带的R-TWT参数和第一请求帧中携带的R-TWT参数可以相同，或者也可以不同。
在一些实施例中，根据第一响应帧中的R-TWT参数确定的R-TWT和所述至少一个第一BSS内的已建立R-TWT在时间上不重叠，或者说，不冲突。
即，第一AP建立的第一AP和第一STA之间的R-TWT避开了第一STA的干扰BSS内的已建 立的R-TWT。换言之，第一AP在与第一STA建立R-TWT时，所选用的R-TWT参数不与至少一个第一BSS内的已建立R-TWT对应的R-TWT参数冲突。
应理解，本申请并不限定第一信息在帧中的承载方式，例如承载在帧中的已有元素或字段中，或者，也可以新增元素或字段用于承载该第一信息，以下结合具体示例说明第一信息在第一请求帧中的承载方式，但本申请并不限于此，根据本申请的示例所得出的其他替换方式均落入本申请的保护范围。
在一些实施例中，所述第一请求帧包括第一TWT元素，所述第一信息携带在所述第一TWT元素中。可选地，可以利用TWT元素中的已有字段(例如预留字段)或新增字段用于承载该第一信息。
在一些实施例中，所述第一TWT元素包括OBSS信息列表(OBSS Info List)字段，所述OBSS信息列表字段用于承载所述第一信息。该OBSS信息列表字段或称干扰BSS信息(Interference BSS Info)字段。
例如，在第一TWT元素中的广播TWT参数集(Broadcast TWT Parameter Set)字段的末尾添加Interference BSSID Info字段，该Interference BSSID Info字段的长度可变，具体长度由第一STA上报的干扰BSS信息的大小决定。
在一些实施例中，所述第一TWT元素还包括OBSS信息列表存在(OBSS Info List Present)字段，或称干扰BSS信息存在(Interference BSS Info Present)字段，用于指示所述第一TWT元素中是否包括干扰BSS信息字段。
示例性地，若OBSS Info List Present字段为1，表示第一TWT元素中存在OBSS Info List字段，若OBSS Info List Present字段为0，表示第一TWT元素中不存在OBSS Info List字段。
在一些实施例中，第一TWT元素还用于承载所述第一STA请求建立的R-TWT参数，例如，第一TWT元素包括TWT参数信息(TWT Parameter Information)字段，第一STA请求建立的R-TWT参数携带在该TWT参数信息字段中，该TWT参数信息字段的具体格式参考图2至6中所示例的格式。
结合图10至图12说明，第一TWT元素中的OBSS信息列表(OBSS Info List)字段的具体设计。
情况1：上报干扰BSS，并且采用BSSID标识干扰BSS。
图10是本申请实施例提供的一种OBSS信息列表字段的格式的示意性格式图，其中，在图10的示例中，采用BSSID标识干扰BSS。其中，该OBSS信息列表携带在第一TWT元素的Broadcast TWT Parameter Set字段。
如图10所示，所述OBSS信息列表字段包括BSSID大小(BSSID Sise)字段和/或至少一个BSSID字段，所述BSSID大小字段用于指示所述OBSS信息列表字段包括的BSSID字段的个数，即干扰BSS的个数，所述BSSID字段用于指示所述第一BSS的ID信息，即BSSID。
可选地，BSSID字段的长度可以是6个字节。则至少一个BSSID字段可以占6*n个字节，其中，n是干扰BSS的个数。
可选地，BSSID Size字段的长度可以是1个字节，或者，其他长度，具体由最多可上报的干扰BSS的个数决定。
在一些实施例中，当Broadcast TWT Parameter Set字段中Request Type字段中Broadcast TWT Recommendation字段的取值为4(即该TWT是R-TWT)时，OBSS信息列表字段存在。
在一些实施例中，在R-TWT建立阶段，该第一TWT元素可以携带在TWT建立请求帧中，此时，该OBSS信息列表字段通过一个或多个BSSID指示第一STA可能受到的干扰BSS信息。
在一些实施例中，在R-TWT广播阶段，该第一TWT元素可以携带在信标帧中，此时，OBSS信息列表字段通过一个或多个BSSID指示使用该R-TWT的设备可能会受到的干扰BSS信息。
可选地，所述Broadcast TWT Parameter Set字段还包括OBSS信息列表存在(OBSS Info List Present)字段，用于指示所述Broadcast TWT Parameter Set中是否包括OBSS信息列表字段。
示例性地，若OBSS Info List Present字段为1，表示Broadcast TWT Parameter Set中存在OBSS Info List字段，若OBSS Info List Present字段为0，表示Broadcast TWT Parameter Set中不存在OBSS Info List字段。
可选地，如图10所示，该OBSS Info List Present字段包括在Broadcast TWT Parameter Set字段中的Broadcast TWT Info字段中。
情况2：上报干扰BSS，并且采用BSS Color标识干扰BSS。
图11是本申请实施例提供的另一种OBSS信息列表(OBSS Info List)字段的格式的示意性格式图，其中，在图11的示例中，采用BSS Color标识干扰BSS。
如图11所示，所述OBSS信息列表(OBSS Info List)字段包括BSS颜色大小(BSS Color Sise)字段和/或至少一个BSS颜色(BSS Color)字段，所述BSS颜色大小字段用于指示所述OBSS信息列 表字段包括的BSS颜色字段的个数，所述BSS颜色字段用于指示所述第一BSS的颜色信息。
可选地，BSS颜色字段的长度可以是6比特或1个字节，例如，使用1个字节中的高位或低位6比特指示BSS Color。
可选地，BSS Color Size字段的长度可以是1个字节，或者，其他长度，具体由最多可上报的干扰BSS的个数决定。
在一些实施例中，当Broadcast TWT Parameter Set字段中Request Type字段中Broadcast TWT Recommendation字段的取值为4(即该TWT是R-TWT)时，OBSS信息列表字段存在。
在一些实施例中，在R-TWT建立阶段，该第一TWT元素可以携带在TWT建立请求帧中，此时，该OBSS信息列表字段通过一个或多个BSS Color指示第一STA可能受到的干扰BSS信息。
在一些实施例中，在R-TWT广播阶段，该第一TWT元素可以携带在信标帧中，此时，OBSS信息列表字段通过一个或多个BSS Color指示使用该R-TWT的设备可能会受到的干扰BSS信息。
可选地，所述Broadcast TWT Parameter Set字段还包括OBSS信息列表存在(OBSS Info List Present)字段，用于指示所述Broadcast TWT Parameter Set中是否包括OBSS信息列表字段。
示例性地，若OBSS Info List Present字段为1，表示Broadcast TWT Parameter Set中存在OBSS Info List字段，若OBSS Info List Present字段为0，表示Broadcast TWT Parameter Set中不存在OBSS Info List字段。
可选地，如图11所示，该OBSS Info List Present字段包括在Broadcast TWT Parameter Set字段中的Broadcast TWT Info字段中。
情况3：上报干扰BSS以及干扰BSS对应的RSSI信息。
图12是本申请实施例提供的又一种OBSS信息列表(OBSS Info List)字段的格式的示意性格式图，其中，在图12的示例中，采用BSSID或BSS Color标识干扰BSS，并且向第一AP上报干扰BSS对应的RSSI信息。
如图12所示，所述OBSS信息列表(OBSS Info List)字段包括OBSS信息大小(OBSS Info Sise)字段/或至少一个OBSS信息(OBSS Info)字段，其中，所述OBSS信息大小字段用于指示所述OBSS信息列表包括的OBSS信息字段的个数，即干扰BSS的个数，所述OBSS信息字段用于指示所述至少一个第一BSS的ID信息或颜色信息，以及所述第一STA对所述至少一个第一BSS内的AP所发送信号的接收强度信息，例如RSSI。
在一些实施例中，如图12所示，BSS信息(BSS Info)字段包括BSSID/BSS Color字段和RSSI字段(可选)。其中，该BSSID/BSS Color字段用于指示第一STA的干扰BSS，RSSI字段用于指示第一STA对该BSSID/BSS Color字段所指示的干扰BSS内的AP所发送信号的RSSI。
可选地，RSSI信息的取值范围是0到255。
可选地，该OBSS信息(BSS Info)字段还包括控制(Control)字段，用于指示OBSS信息字段中的其他字段的控制信息。
例如，该控制字段可以包括如下至少一个字段：
OBSS信息类型(OBSS Info Type)或称干扰BSS信息类型字段，用于指示BSSID/BSS Color字段用于指示BSSID还是BSS Color；
RSSI存在(RSSI Present)字段，用于指示OBSS信息字段是否包括RSSI字段。
可选地，OBSS Info Type字段可以为1比特或2比特，具体由可指示的OBSS标识的种类决定。示例性的，该OBSS Info Type字段取值为0，表示BSSID/BSS Color字段用于指示BSSID，若取值为1，表示BSSID/BSS Color字段用于指示BSS Color。
可选地，RSSI Present字段可以是1比特，例如，该1比特取值为1表示BSS信息字段中包括RSSI字段，否则，不包括RSSI字段。
可选地，在R-TWT建立阶段，该RSSI Present字段的取值为1，在R-TWT广播阶段，该RSSI Present字段的取值为0。
可选地，在OBSS Info Type字段指示的类型是BSSID时，BSSID/BSS Color字段用于指示BSSID，长度可以为6个字节；在OBSS Info Type字段指示的类型是BSS Color时，BSSID/BSS Color字段用于指示BSS Color，此情况下，长度可以为6比特或1个字节，其中，该1个字节的高位或低位6比特用于指示BSS Color，其他2比特作为预留比特。
可选地，RSSI字段指示的RSSI可以根据第一STA对第一AP发送的Beacon帧的接收信号强度确定。
在一些实施例中，当Broadcast TWT Parameter Set字段中Request Type字段中Broadcast TWT Recommendation字段的取值为4(即该TWT是R-TWT)时，OBSS Info List字段存在。
在一些实施例中，在R-TWT建立阶段，OBSS Info List字段通过一个或多个BSSID或BSS Color指示第一STA可能受到的干扰BSS以及第一STA对干扰BSS内的信号的接收强度信息。
在一些实施例中，在R-TWT广播阶段，OBSS Info List字段通过一个或多个BSSID或BSS Color指示使用该R-TWT的设备可能会受到的干扰BSS信息。
可选地，所述Broadcast TWT Parameter Set字段还包括OBSS列表存在(OBSS Info List Present)字段，用于指示所述Broadcast TWT Parameter Set中是否包括OBSS Info List字段。
示例性地，若OBSS Info List Present字段为1，表示Broadcast TWT Parameter Set中存在OBSS Info List字段，若OBSS Info List Present字段为0，表示Broadcast TWT Parameter Set中不存在OBSS Info List字段。
可选地，如图12所示，该OBSS Info List Present字段包括在Broadcast TWT Parameter Set字段中的Broadcast TWT Info字段中。
情况4：上报干扰BSS以及干扰BSS内的已建立的R-TWT信息。
在该情况4中，第一STA上报干扰BSS的具体方式参考情况1和情况2中的具体实现，这里不再赘述。
在一些实施例中，所述至少一个第一BSS内已建立的R-TWT信息和所述至少一个第一BSS的标识信息或颜色信息可以承载在同一个元素中，例如前述第一TWT元素中，也可以承载在不同的元素中。
在一些实施例中，第一TWT元素中可以包括至少一个R-TWT参数信息字段，每个R-TWT参数信息字段字段对应一个干扰BSS，该R-TWT参数信息字段字段字段用于指示对应的干扰BSS内已建立的R-TWT信息。
在另一些实施例中，所述第一请求帧还包括至少一个OBSS R-TWT元素，用于承载所述至少一个第一BSS内的已建立的R-TWT信息。其中，该至少一个OBSS R-TWT元素和第一STA的至少一个干扰BSS一一对应，每个OBSS R-TWT元素用于承载对应的干扰BSS内已建立的R-TWT信息。
表2是根据本申请实施例的一种TWT建立帧的帧格式示例。
表1
Figure PCTCN2022127457-appb-000002
在一些实现方式中，可以在TWT建立请求帧中增加Order 5的信息内容，这样，第一STA可以通过该TWT建立请求帧将干扰BSS以及干扰BSS内的已建立的R-TWT信息上报给第一AP。
也就是说，TWT建立帧中的Order 4的信息内容可以是第一STA请求的R-TWT参数以及对应的干扰BSS，Order 5的信息内容可以是干扰BSS内已建立的R-TWT信息。
在一些实施例中，OBSS R-TWT元素的格式可以参考4至图6中的TWT元素的格式，为了简洁，这里不再赘述。
应理解，在本申请实施例中，OBSS R-TWT元素也可以称为TWT元素，R-TWT元素，由于其用于承载OBSS内已建立的R-TWT信息，为便于区分和说明，故称OBSS R-TWT元素，但不应对本申请构成任何限定。
可选地，在情况4中，第一STA中还可以向第一AP上报干扰BSS对应的RSSI信息，具体上报方式参考情况3中的相关说明，为了简洁，这里不再赘述。
在本申请一些实施例中，所述方法200还包括：
第一接入点设备根据第一信息，获取所述至少一个第一BSS内已建立的R-TWT信息。
在一些实施例中，至少一个第一BSS内已建立的R-TWT信息是从所述至少一个第一BSS内的AP或第一STA获取的。
在一些实施例中，在第一信息包括至少一个第一BSS的ID信息或颜色信息，但不包括至少一个第一BSS内已建立的R-TWT信息的情况下，第一AP根据所述至少一个第一BSS的ID信息或颜色信息在预存信息中获取所述至少一个第一BSS内已建立的R-TWT信息。其中，该预存信息包括一个或多个BSS的BSSID或颜色信息，以及该一个或多个BSS内已建立的R-TWT信息。
例如，在接收到第一STA发送的第一信息时，第一AP可以根据第一信息中携带的BSSID信息或BSS颜色信息确定第一STA的干扰BSS，然后在预存信息中查找该干扰BSS内已建立的R-TWT信息。进一步地，在建立第一AP和第一STA之间的R-TWT时可以规避干扰BSS内已建立的R-TWT，从而能够降低干扰BSS内的传输对第一AP和第一STA之间建立的R-TWT的SP期间的传输的干扰。
在一些实施例中，所述预存信息可以是从第一AP的关联STA和/或第一AP的相邻AP获取的。
为便于区分和说明，将干扰BSS内已建立的R-TWT信息记为OBSS R-TWT信息。
以下具体实施例，说明所述预存信息的获取方式。
方式1：预存信息是从相邻AP获取的。
可选地，预存信息是在R-TWT广播阶段获取的。
可选地，该相邻AP所在的BSS和第一AP所在的BSS是OBSS。
在该方式1中，第一AP可以接收到相邻AP发送的帧，相邻AP可以广播其所在BSS内已建立的R-TWT信息，则第一AP可以通过接收相邻AP发送的帧获取相邻AP所在BSS内已建立的R-TWT信息。则第一AP可以存储该相邻AP所在的BSS的BSSID或颜色信息，以及该相邻AP与其关联的STA已建立的R-TWT信息。由于AP可以接收到相邻AP发送的帧，则该相邻AP与其关联的STA之间的传输会对该第一AP与其关联的STA之间的传输产生干扰，因此，第一AP可以存储上述信息。
可选地，该相邻AP可以包括第一BSS内的AP，则第一AP可以通过接收第一BSS内的AP发送的帧获取第一BSS内已建立的R-TWT信息。
在一些实施例中，第一AP可以接收相邻AP(例如第二AP)发送的信标(Beacon)帧，该Beacon帧中包括第二AP所在BSS内已建立的R-TWT信息。
可选地，所述信标帧还可以包括第二AP所在BSS内已建立的R-TWT对应的干扰BSS信息(即OBSS信息)，该干扰BSS内的传输会对该第二AP所在BSS内已建立的R-TWT内的传输产生干扰，该干扰BSS信息例如可以是干扰BSS对应的BSSID或BSS Color。
可选地，该第二AP所在BSS内已建立的R-TWT对应的干扰BSS信息可以是第二AP从其关联的STA获取的。例如，第二AP的关联STA在请求建立R-TWT时可以将该关联STA的干扰BSS信息(即OBSS信息)上报给第二AP，具体上报方式参考第一STA向第一AP上报干扰BSS信息(即OBSS信息)的相关实现，为了简洁，这里不再赘述。则第二AP可以认为该关联STA上报的OBSS为该第二AP和该关联STA之间建立的R-TWT对应的干扰BSS。
在一些实施例中，信标帧中可以包括第二TWT元素，所述第二TWT元素用于承载第二AP与第二AP关联的STA之间已建立的R-TWT信息。
可选地，所述第二TWT元素还用于承载至少一个第二BSS的信息，例如所述至少一个第二BSS的BSSID或颜色信息，其中，所述至少一个第二BSS是所述第二AP所在BSS内已建立的R-TWT对应的干扰BSS。即，所述至少一个第二BSS内的传输可能对所述第二AP与所述第二AP关联的STA之间建立的R-TWT的SP期间的传输产生干扰。
在一些实施例中，第二TWT元素的格式可以参考前述实施例中第一TWT元素的格式，具体实现参考前述实施例的相关描述，为了简洁，这里不再赘述。
结合图13举例说明，AP1和AP2相互能接收到对方发送的帧，其中，AP2与STA21、STA22之间已经建立了R-TWT，AP2可以通过Beacon帧广播AP2与STA21，以及AP2和STA22之间已经建立的R-TWT信息。AP1通过解析AP2发送的Beacon帧中的TWT元素可以确定AP2与STA21，以及AP2和STA22之间建立的R-TWT信息。
方式2：预存信息是从第一AP的关联STA获取的。
可选地，第一AP的关联STA位于OBSS内，则第一AP的关联STA可以接收到其他BSS内的AP发送的帧，其他BSS内的AP可以广播其所在BSS内已建立的R-TWT信息，则第一STA可以通过接收其他BSS内的AP发送的帧获取其他BSS内已建立的R-TWT信息。
在一些实施例中，第一STA所在BSS的OBSS包括所述至少一个第一BSS，STA可以接收到所述至少一个第一BSS内的AP广播的其所在BSS内的已建立的R-TWT信息。例如，第一STA可以接收第一BSS内的AP发送的信标帧，从该信标帧获取该第一BSS内已建立的R-TWT信息。
在一些实施例中，所述预存信息是第一AP基于请求从第一AP的关联STA获取的。
也就是说，第一AP的关联STA可以基于第一AP的请求向第一AP上报其获取的OBSS内的已建立的R-TWT信息。
例如，第一AP可以请求第一STA上报OBSS内的已建立的R-TWT信息，进一步地，第一STA可以向第一AP上报其获取的至少一个第一BSS内已建立的R-TWT信息。
在一些实施例中，所述方法200还包括：
第一AP向第一STA发送第二请求帧，所述第二请求帧用于请求第一STA上报所述第一STA获取的其他AP所在的BSS(即OBSS)内已建立的R-TWT信息；
第一AP接收第一STA发送的第二响应帧，所述第二响应帧上报所述第一STA获取的其他AP所在的BSS(即OBSS)内已建立的R-TWT信息。
在一些实施例中，第一STA上报的其他BSS内已建立的R-TWT信息可以是第一STA在R-TWT广播阶段从其他BSS内的AP获取的。例如，第一STA通过接收其他BSS内的AP发送的信标帧获取的。可选地，该信标帧中还可以包括其他BSS内已建立的R-TWT对应的干扰BSS信息。可选地，上述信息承载在信标帧中的TWT元素中。因此，在第一STA接收到非关联AP发送的信标帧，并且信标帧中包括TWT元素时，第一STA可以存储该TWT元素中的信息。
在一些实施例中，第二响应帧还包括其他BSS内已建立的R-TWT对应的干扰BSS信息。
在一些实施例中，其他BSS包括第三AP所在的BSS，所述第二响应帧包括第三TWT元素，所述第三TWT元素用于承载所述第三AP与所述第三AP关联的STA之间已建立的R-TWT信息。
可选地，所述第三TWT元素还用于承载至少一个第三BSS的信息，其中，至少一个第三BSS内的传输可能对第三AP与第三AP关联的STA之间的R-TWT的SP期间的传输产生干扰。
即，所述至少一个第三BSS是第三AP关联的STA的干扰BSS。
可选地，在第二响应帧中，干扰BSS信息和第三AP与第三AP关联的STA之间的R-TWT是相对应的。例如，第三AP和不同的STA之间建立的R-TWT都可以对应相应的干扰BSS信息。可选地，第三AP和不同的STA之间建立的R-TWT(或者说，每组AP和STA)对应的干扰BSS信息可以相同，或者，也可以不同。
因此，由于第一STA可以接收到其他AP发送的帧，则其他AP与其关联STA之间的传输可能对该第一STA与第一AP之间的传输产生干扰，因此，第一AP可以存储其他AP所在BSS的BSSID或颜色信息，以及该关联STA获取的其他AP与其关联的STA已建立的R-TWT信息。
在一些实施例中，所述第二请求帧为信标请求(Beacon Request)帧，所述第二响应帧为信标响应(Beacon Response)帧。
结合图14举例说明，AP1与STA11、STA12关联，AP2与STA21、STA22关联。假设STA21、STA22与AP2已经建立R-TWT，AP2可以通过Beacon帧广播AP2与STA21，以及AP2和STA22之间已经建立的R-TWT信息，STA11可以接收到AP2的Beacon帧，从而获知AP2所在BSS内已建立的R-TWT信息。AP1向STA11发送Beacon Request，请求STA11回复Beacon Response，该Beacon Response中包括AP2发送的Beacon帧中携带的R-TWT信息，因此AP1可以通过Beacon Response获知AP2与STA21、STA22之间建立的R-TWT信息。
方式3：预存信息是通过共享方式获取的。
在该方式3中，可以将AP进行分组，同一个组中的AP可以将其所在BSS内已建立的R-TWT信息共享给其他AP，即同一个组的一个AP可以获知同一个组中的其他AP所在BSS内已建立的R-TWT信息。
可选地，共享R-TWT信息的AP的分组或称多AP组。多AP组内的AP可以通过有线或无线的方式连接，从而实现R-TWT信息的共享。
可选地，多AP组中可以存在中心AP或者，也可以不存在中心AP。例如，在存在中心AP的情况下，每个AP通过中心AP获取其他AP所在BSS内已建立的R-TWT信息。在不存在中心AP的情况下，每个AP可以直接获取其他AP所在BSS内已建立的R-TWT信息。
可选地，多AP组内的AP之间也可以共享已建立的R-TWT对应的干扰BSS信息，即哪些BSS会对已建立的R-TWT产生干扰。
例如，如图15所示，AP1和AP2属于一个多AP组，AP2与STA21、STA22建立了R-TWT并将该R-TWT信息共享给AP1，该AP2还可以将已经建立的R-TWT的干扰BSS信息共享给AP1，从而AP1可以根据该干扰BSS信息确定AP2与其关联STA之间建立的R-TWT是否可能受到AP1的干扰。例如，在图15的示例中，AP2与STA21之间建立的R-TWT的干扰BSS信息包含AP1所在BSS的ID信息或颜色信息，而AP2与STA22之间建立的R-TWT的干扰BSS信息不包含AP1所在BSS的ID信息或颜色信息。
在本申请另一些实施例中，所述至少一个第一BSS内已建立的R-TWT信息是在R-TWT建立阶段获取的。
即，第一STA在请求建立R-TWT时，向第一AP指示第一STA的干扰BSS以及干扰BSS内已建立的R-TWT信息。
在一些实施例中，所述至少一个第一BSS内已建立的R-TWT信息携带在第一信息中，第一信息 通过第一请求帧发送。至少一个第一BSS内已建立的R-TWT信息在第一请求帧中的承载方式参考情况4中的相关说明，为了简洁，这里不再赘述。
如图16所示，AP1与STA1关联，AP2与STA2关联，AP3与STA3关联，虚线表示每个AP的覆盖范围，或者说，BSS范围。由图16可见，AP2和AP3所在的BSS为STA1的干扰BSS。假设AP2与STA2，AP3与STA3已经建立了R-TWT。
STA1想与AP1建立R-TWT，则STA1向AP1发送TWT建立请求帧请求建立R-TWT。该TWT建立请求帧中包含第一TWT元素以及至少一个OBSS R-TWT元素，其中，第一TWT元素用于指示请求建立的R-TWT信息以及干扰BSS信息，所述至少一个OBSS R-TWT元素用于承载至少一个干扰BSS内已建立的R-TWT信息。其中，OBSS R-TWT元素中承载的干扰BSS内已建立的R-TWT信息可通过接收AP2和AP3广播的Beacon帧获取。
以下结合具体实施例，说明根据本申请实施例的R-TWT的建立方式。
实施例1：
图17是本申请实施例的一种应用场景的示意图，在图17示例的应用场景中，STA11和STA12与AP1关联，STA21与AP2关联，图17中虚线表示AP的覆盖范围，STA11处在OBSS内，可能会受到AP2的干扰。假定STA12已经与AP1建立R-TWT，则AP1在Beacon帧中包含的TWT元素可以通告AP1与STA12之间建立的R-TWT信息。假定STA21已经与AP2建立了R-TWT，则AP2在Beacon帧中包含的TWT元素可以通告AP2与STA21之间建立的R-TWT信息。
由于STA11处于OBSS内，则STA11会接收到AP1发送的Beacon帧以及AP2发送的Beacon帧，其中，AP1发送的Beacon帧中包含AP1与STA12建立的R-TWT的信息，通过解析该Beacon中的TWT元素中的Broadcast R-TWT Parameter Set字段的Interference BSSID Info字段，STA11确定AP1与STA12建立的R-TWT对应的干扰BSS，该干扰BSS不包括AP2所在的BSS。由于STA11处于OBSS中，可能会受到来自AP2的干扰。因此，STA11确定其不能加入AP1与STA12之间建立的R-TWT。STA11解析AP2发送的Beacon帧中的TWT元素可以获知AP2与STA21建立的R-TWT对应的干扰BSS。进一步地，STA11向关联的AP1发送TWT建立请求，TWT建立请求用于请求建立STA11和AP1之间的R-TWT。
在该示例中，该TWT建立请求所请求的R-TWT参数需要避开AP2与STA21之间的R-TWT SP(即STA11需要选用与AP2与STA21之间建立的R-TWT不同的参数，避免STA11和AP1之间的R-TWT SP和AP2与STA21之间的R-TWT SP在时间上有冲突)。
在该示例中，TWT建立请求包括的TWT元素中的Interference BSSID Info字段指示的干扰BSS为AP2所在的BSS。并将Interference BSSID Info Present字段置为1，表示该TWT元素承载Interference BSSID Info字段。
进一步地，AP1向STA11回复R-TWT响应帧，表示同意STA11的建立请求。
在一些实施例中，如果AP1成功与STA11建立R-TWT，则AP1在Beacon帧中广播的TWT信息中包含AP1与STA11建立的R-TWT信息。
实施例2：
图18是本申请实施例的一种应用场景的示意图，在图18示例的应用场景中，STA11，STA12和STA13与AP1关联，STA21与AP2关联，假定STA12已经与AP1建立R-TWT，STA11已经实施例1描述的过程与AP1建立了R-TWT。则AP1在Beacon帧中包含的TWT元素可以通告AP1与STA11，STA12之间建立的R-TWT信息。假定STA21已经与AP2建立R-TWT，则AP2在Beacon帧中包含的R-TWT元素可以通告AP2与STA21之间建立的R-TWT信息。图18中的虚线表示AP的覆盖范围或BSS的服务，STA13位于OBSS内，因此可能会受到AP2的干扰。
由于STA13处于OBSS内，则STA13会接收到AP1发送的Beacon帧以及AP2发送的Beacon帧，其中，AP1发送的Beacon帧中包含AP1与STA11和STA12建立的R-TWT的信息，通过解析该Beacon中的TWT元素中的Broadcast R-TWT Parameter Set字段的Interference BSSID Info字段，STA13确定AP1与STA11建立的R-TWT对应的干扰BSS，该干扰BSS包括AP2所在的BSS。由于STA13处于OBSS中，也可能会受到来自AP2的干扰，即STA11和STA13的干扰BSS相同。因此，STA13确定其可以加入AP1与STA11之间建立的R-TWT。STA13解析AP2发送的Beacon帧中中的TWT元素中的Broadcast R-TWT Parameter Set字段的Interference BSSID Info字段可以确定STA21的干扰BSS。
进一步地，STA13向关联的AP1发送TWT建立请求，TWT建立请求用于请求建立STA13和AP1之间的R-TWT。由于STA11和STA12的干扰BSS相同，因此，STA13可以使用AP1与STA11之间建立的R-TWT信息来发起R-TWT的建立请求。即STA13在TWT建立请求中携带的R-TWT参 数可以与STA11发送的TWT建立请求中携带的R-TWT参数相同。
在该示例中，STA13发送的TWT建立请求包括的TWT元素中的Interference BSSID Info字段指示的干扰BSS为AP2所在的BSS。并将Interference BSSID Info Present字段置为1，表示该TWT元素承载Interference BSSID Info字段。
进一步地，AP1向STA13回复R-TWT响应帧，表示同意STA13的建立请求。
在一些实施例中，如果AP1成功与STA13建立R-TWT，则AP1在Beacon帧中广播的TWT信息中包含AP1与STA13建立的R-TWT信息。
实施例3：
图19是本申请实施例的一种应用场景的示意图，在图19示例的应用场景中，STA11、STA12和STA13与AP1关联，STA21、STA22与AP2关联，假定STA12已经与AP1建立R-TWT，STA11已经通过实施例1中描述的过程与AP1建立了R-TWT，STA13已经通过实施例2中描述的过程与AP1建立了R-TWT，STA21已经与AP2建立了R-TWT。图19中虚线表示AP的覆盖范围或BSS的服务，STA22可能会受到AP1的干扰，即STA22的干扰BSS包括AP1所在的BSS。
与前述实施例2类似，STA22可以通过解析AP1和AP2的信标帧获知其所在BSS内已建立的R-TWT信息以及对应的干扰BSS信息。在图19的示例中，STA21的干扰BSS不包括AP1所在的BSS，STA22的干扰BSS包括AP1所在的BSS，因此，STA22可以确定其不能加入STA21和AP2已经建立的R-TWT。
进一步地，STA22向关联的AP2发送TWT建立请求，TWT建立请求用于请求建立STA22和AP2之间的R-TWT。
在该示例中，STA22发送的TWT建立请求包括的TWT元素中的Interference BSSID Info字段指示的干扰BSS为AP1所在的BSS。并将Interference BSSID Info Present字段置为1，表示该TWT元素承载Interference BSSID Info字段。
进一步地，AP2向STA22回复R-TWT响应帧，表示同意STA22的建立请求。
在一些实施例中，如果AP2成功与STA22建立R-TWT，则AP2在Beacon帧中广播的TWT信息中包含AP2与STA22建立的R-TWT信息。
在一些实施例中，第一AP可以根据干扰源或所处环境进行静默。
在一些实施例中，第一AP可以遵循如下静默规则中的至少之一：
第一AP在第一BSS集合内的已建立的R-TWT信息指示的R-TWT的SP期间保持静默，其中，所述第一BSS集合内的BSS和所述第一AP所在的BSS为OBSS；
第一AP在第一R-TWT信息指示的R-TWT SP内保持静默，其中，所述第一R-TWT信息对应的干扰BSS包括所述第一AP所在的BSS。
在一些实施例中，所述第一BSS集合是所述第一AP接收到信标帧的AP所在的BSS，其中，所述信标帧中包括所述BSS内的已建立的R-TWT信息。
在一些实施例中，对根据前述方式1获得的R-TWT信息确定的R-TWT记为第一类R-TWT，根据前述方式2或方式3获得的R-TWT信息确定的R-TWT记为第二类R-TWT。
则在第一类R-TWT的SP期间，第一AP保持静默，若第一AP持有TXOP，则第一AP需要在第一类R-TWT的SP开始之前结束该TXOP。
若第二类R-TWT对应的干扰BSS包括第一AP所在的BSS，则第一AP在第二类R-TWT的SP期间保持静默。若第一AP持有TXOP，则第一AP需要在第二类R-TWT的SP开始之前结束该TXOP。
在一些场景中，第一AP可以接收到相邻AP发送的帧，也就是说，相邻AP也可以接收到第一AP发送的帧，则第一AP与其关联的STA之间的传输对相邻AP与其关联STA之间的传输会产生干扰，此情况下，第一AP可以在相邻AP所在BSS内已建立的R-TWT的SP期间保持静默。
在另一些场景中，第一AP可以不能接收到相邻AP的帧，此情况下，第一AP可以通过前述方式2获取一个或多个BSS内已经建立的R-TWT信息以及对应的干扰BSS信息，若某个R-TWT对应的干扰BSS包括第一AP所在BSS，则第一AP可以该R-TWT的SP期间保持静默。
在又一些场景中，第一AP通过多AP组方式获取其他AP的R-TWT信息以及对应的干扰BSS信息。若某个R-TWT对应的干扰BSS包括第一AP所在BSS，则第一AP可以该R-TWT的SP期间保持静默。
在一些实施例中，第一STA可以根据干扰源或所处环境进行静默。
在一些实施例中，第一STA可以遵循如下静默规则：
在第一STA和第一AP建立的R-TWT的SP期间之外，第一STA在第二BSS集合内的已建立的 R-TWT信息指示的R-TWT的SP期间均保持静默，其中，所述第二BSS集合是所述第一站点设备接收到信标帧的接入点设备所在的BSS。
可以理解，在第一STA能够接收到第二BSS集合中的BSS内的AP发送的信标帧，则表示该第一STA位于OBSS内，因此，第一STA与第一AP之间的传输会对第二BSS集合中的BSS内的传输产生干扰，因此，第一STA需要在第二BSS集合内的已建立的R-TWT信息指示的R-TWT的SP期间均保持静默。
结合图20中的具体示例，说明根据本申请实施例的AP和STA的静默方式。
在图20的示例中，AP1与STA11、STA12关联，AP2与STA21、STA22关联。AP1与STA11、STA12分别建立R-TWT，AP2与STA21、STA22分别建立R-TWT。
其中，STA11的干扰BSS包括AP2所在的BSS，STA21的干扰BSS包括AP1所在的BSS，STA12的干扰BSS不包括AP2所在的BSS，STA22的干扰BSS不包括AP1所在的BSS。
则STA11需要在AP2与STA21的R-TWT SP内，AP2与STA22的R-TWT的SP期间，以及AP1与STA12的R-TWT的SP期间保持静默。
STA12需要在AP1与STA11的R-TWT的SP期间保持静默。
STA21需要在AP1与STA11的R-TWT SP内、AP1与STA12的R-TWT SP内以及AP2与STA22的R-TWT的SP期间保持静默。
STA22需要在AP2与STA21的R-TWT的SP期间保持静默。
AP1需要在AP2与STA21的R-TWT的SP期间保持静默。
AP2需要在AP1与STA11的R-TWT的SP期间保持静默。
在图13的示例，AP1位于OBSS内，则在AP2与其关联STA建立的R-TWT的SP期间，AP1需要保持静默。并且，AP2位于OBSS内，则在AP1与其关联STA建立的R-TWT的SP期间，AP2需要保持静默。
在图14的示例中，AP1通过STA11发送的Beacon Response帧可得知AP2与STA21建立的R-TWT可能会受到AP1的干扰(即干扰BSS信息中包括AP1所在BSS的ID信息或颜色信息)，而AP2与STA22建立的R-TWT不会受到AP1的干扰(即干扰BSS信息中不包括AP1所在BSS的ID信息或颜色信息)。因此，在AP2与STA21建立的R-TWT的SP期间，AP1需要保持静默。
在图15的示例中，AP1可以通过共享方式获知AP2与STA21建立的R-TWT可能会受到AP1的干扰，而AP2与STA22建立的R-TWT不会受到AP1的干扰。因此，在AP2与STA21建立的R-TWT的SP期间，AP1需要保持静默。
在本申请一些实施例中，第一AP可以根据STA所处的环境(例如，受到的干扰，例如干扰BSS信息)建立第一AP与其关联STA之间的R-TWT。例如，对于干扰BSS相同的STA，第一AP可以建立相同的R-TWT，即采用相同的R-TWT参数。对于干扰BSS不同的STA，第一AP可以建立不同的R-TWT，即采用不同的R-TWT参数。因此，本申请实施例可以根据干扰源对R-TWT进行分组，每组R-TWT对应相应的干扰BSS，不同组的R-TWT对应不同的干扰BSS。
在一些实施例中，第一请求帧中包括第一STA对应的干扰BSS信息，用于请求第一AP建立针对该干扰BSS信息的R-TWT。例如，第一AP针对不同的干扰BSS可以建立不同的R-TWT，针对相同的干扰BSS可以建立相同的R-TWT。若有多个STA的干扰BSS相同，则该多个STA可以使用相同的R-TWT，这样，不必为每个STA均建立不同的R-TWT，导致其他STA需要在该R-TWT的SP期间进行退避，从而导致数据不能及时传输的问题，提升R-TWT的分组收益。
也就是说，在本申请实施例中，第一AP可以根据干扰源进行R-TWT的建立，进一步第一AP和第一STA可以根据干扰源进行退避，而不需要在每个R-TWT SP期间都进行退避，有利于提升R-TWT的分组收益。
如图21所示，AP1与STA11、STA12、STA13和STA14关联，AP2与STA21关联。STA11不会受到其它BSS的干扰，STA12会受到AP3所在BSS的干扰，STA13会受到AP2所在BSS的干扰，STA14会受到AP2和AP3所在BSS的干扰，STA21会受到AP3所在BSS的干扰。
由于干扰环境的不同，AP1需要为STA11，STA12，STA13，STA14分别建立不同的R-TWT。AP2为STA21建立R-TWT，且在时间上不与AP1与STA13，AP1与STA14之间的R-TWT SP有冲突，但是可以与AP1与STA11，AP1与STA12之间的R-TWT SP有重叠。
假设AP1，AP2，AP3和对应的关联STA之间的R-TWT SP的持续时间相同，均为t，该t可以是每个STA完成延迟敏感流量传输需要花费的时间。
则在不按干扰源进行分组静默的情况下，若AP1与STA11，STA12，STA13，STA14之间分别只建立一个R-TWT，则完成延迟敏感流量的传输需要花费的总时间为4t。为了不影响AP1与STA11， STA12，STA13，STA14之间的延迟敏感流量的传输，在上述R-TWT的SP期间，AP2和AP3需保持静默，各自的静默时间均为4t。
在按干扰源进行分组静默时，只有在AP1与STA13，AP1与STA14的R-TWT的SP期间传输延迟敏感流量时，AP2才需要保持静默，总时长为2t，而在AP1与STA11，AP1与STA12的R-TWT SP期间传输延迟敏感流量时，因为STA11，STA12没有位于AP2所在的BSS内，AP2仍能正常竞争信道，则AP2总静默时长为2t。
同理，AP3只需要在AP1与STA12，AP1与STA14的R-TWT SP期间传输延迟敏感流量时，保持静默，则AP3总静默时长为2t。
因此，基于本申请实施例的根据干扰源的R-TWT分组方式和静默方式，有利于降低设备的静默时间，从而保证时延敏感业务的及时传输。
综上，在本申请实施例中，站点设备可以向接入点设备上报该站点设备的干扰BSS信息(即OBSS信息)，进一步地，接入点设备可以根据该干扰BSS内已建立的R-TWT建立站点设备和接入点设备之间的R-TWT，有利于降低干扰BSS内已建立的R-TWT对站点设备和接入点设备之间的R-TWT内的传输的干扰。例如，接入点设备和站点设备建立的R-TWT避开了干扰BSS内已建立的R-TWT。
在一些实现方式中，干扰BSS内已建立的R-TWT信息可以是站点设备在请求建立R-TWT时发送给接入点设备的。
在另一些实现方式中，干扰BSS内已建立的R-TWT信息可以是接入点设备从相邻接入点设备获取的。例如，相邻接入点设备可以广播其所在BSS内已建立的R-TWT信息，接入点设备可以接收并保持该信息，在站点设备请求建立R-TWT时可以向接入点设备干扰BSS的ID信息或颜色信息，接入点设备从保存的信息中获取干扰BSS内已建立的R-TWT信息。
在又一些实现方式中，干扰BSS内已建立的R-TWT信息可以是接入点设备从关联的站点设备获取的。例如，相邻接入点设备可以广播其所在BSS内已建立的R-TWT信息，关联的站点设备可以接收并保持该信息，在接入点设备请求该信息时，站点设备可以向接入点设备上报该信息，接入点设备可以保存该信息。进一步地，在站点设备请求建立R-TWT时可以向接入点设备干扰BSS的ID信息或颜色信息，接入点设备从保存的信息中获取干扰BSS内已建立的R-TWT信息。
在再一些实现方式中，干扰BSS内已建立的R-TWT信息可以是通过多AP组共享的方式获取的。
进一步地，接入点设备和站点设备可以根据所处环境或干扰BSS执行静默。
例如，除STA与AP建立的R-TWT外，STA在接收到的所有Beacon帧中包含的TWT元素中指示的R-TWT SP期间均保持静默。
例如，AP在接收到的相邻AP的Beacon帧中包含的TWT元素中指示的R-TWT SP期间均保持静默。
例如，AP通过Beacon Request和Response获得相邻AP发送的Beacon帧。若该Beacon帧中TWT元素的BSSID字段包含该AP所在BSS的BSSID(或者，BSS Color字段包括该AP所在BSS的颜色信息)，则AP在该TWT元素所指示的R-TWT SP期间保持静默。
例如，AP通过加入多AP组共享获得的其它AP所在BSS内已建立的R-TWT信息及其对应的干扰BSS信息，若其中存在R-TWT信息的干扰BSS包含该AP所在的BSS，则该AP在R-TWT信息指示的R-TWT SP期间保持静默。
上文结合图9至图21，详细描述了本申请的方法实施例，下文结合图21至图26，详细描述本申请的装置实施例，应理解，装置实施例与方法实施例相互对应，类似的描述可以参照方法实施例。
图22示出了根据本申请实施例的接入点设备400的示意性框图。如图22所示，该接入点设备400包括：
通信单元410，用于接收第一站点设备发送的第一信息，所述第一信息用于指示至少一个第一基本服务集BSS的信息，所述至少一个第一BSS内的传输可能对所述第一站点设备和所述接入点设备之间建立的受限的目标唤醒时间R-TWT的服务周期SP期间的传输产生干扰，所述至少一个第一BSS是所述接入点设备和所述第一站点设备所在BSS的重叠基本服务集OBSS；
处理单元420，用于根据所述第一信息，建立所述接入点设备和所述第一站点设备之间的R-TWT。
在一些实施例中，所述第一信息包括以下中的至少一项：
所述至少一个第一BSS的标识ID信息或所述至少一个第一BSS的颜色信息；
所述至少一个第一BSS内的已建立的R-TWT信息；
所述第一站点设备对所述至少一个第一BSS内的接入点设备所发送信号的接收强度信息。
在一些实施例中，所述第一信息携带在第一请求帧中，所述第一请求帧用于请求建立所述第一站点设备和所述接入点设备之间的R-TWT。
在一些实施例中，所述第一请求帧包括第一目标唤醒时间TWT元素，所述第一信息携带在所述第一TWT元素中。
在一些实施例中，所述第一TWT元素包括OBSS信息列表字段，所述OBSS信息字段用于指示所述至少一个第一BSS。
在一些实施例中，所述OBSS信息列表字段包括BSSID大小字段和/或至少一个BSSID字段，所述BSSID大小字段用于指示所述OBSS信息字段包括的BSSID字段的个数，所述BSSID字段用于指示所述第一BSS的ID信息。
在一些实施例中，所述OBSS信息列表字段包括BSS颜色大小字段和/或至少一个BSS颜色字段，所述BSS颜色大小字段用于指示所述OBSS信息字段包括的BSS颜色字段的个数，所述BSS颜色字段用于指示所述第一BSS的颜色信息。
在一些实施例中，所述第一TWT元素包括OBSS信息列表字段，所述OBSS列表字段用于指示所述至少一个第一BSS以及所述第一站点设备对所述至少一个第一BSS内的接入点设备所发送信号的接收强度信息。
在一些实施例中，所述OBSS信息列表字段包括OBSS信息大小字段和/或至少一个OBSS信息字段，其中，所述OBSS信息大小字段用于指示所述OBSS信息字段包括的OBSS信息字段的个数，所述OBSS信息字段用于指示所述至少一个第一BSS的ID信息或颜色信息，以及所述第一站点设备对所述至少一个第一BSS内的接入点设备所发送信号的接收强度信息。
在一些实施例中，所述第一请求帧还包括OBSS信息列表存在字段，用于指示所述第一请求帧中是否包括OBSS信息列表字段。
在一些实施例中，所述第一请求帧包括广播TWT信息字段，所述广播TWT信息字段包括所述OBSS信息列表存在字段。
在一些实施例中，所述第一请求帧还包括至少一个OBSS R-TWT元素，用于承载所述至少一个第一BSS内的已建立的R-TWT信息，其中，每个OBSS R-TWT元素用于承载一个第一BSS内的已建立的R-TWT信息。
在一些实施例中，所述第一请求帧还包括所述第一站点设备请求的R-TWT信息，其中，所述第一站点设备请求的R-TWT和所述至少一个第一BSS内的R-TWT在时间上不重叠。
在一些实施例中，所述处理单元420还用于：
根据所述第一信息，获取所述至少一个第一BSS内的已建立的R-TWT信息。
在一些实施例中，所述至少一个第一BSS内已建立的R-TWT信息是所述接入点设备从所述至少一个第一BSS内的接入点设备获取的。
在一些实施例中，所述至少一个第一BSS内已建立的R-TWT信息是所述接入点设备从所述至少一个第一BSS内的接入点设备发送的信标帧获取的。
在一些实施例中，所述至少一个第一BSS包括第二接入点设备所在的BSS，所述第二接入点设备发送的信标帧包括所述第二接入点设备与所述第二接入点设备关联的站点设备之间已建立的R-TWT信息。
在一些实施例中，所述信标帧包括第二TWT元素，所述第二TWT元素用于承载所述第二接入点设备与所述第二接入点设备关联的站点设备之间已建立的R-TWT信息。
在一些实施例中，所述第二TWT元素还用于承载至少一个第二BSS的信息，其中，所述至少一个第二BSS内的传输可能对所述第二接入点设备与所述第二接入点设备关联的站点设备之间已建立的R-TWT的SP期间的传输产生干扰，所述至少一个第二BSS是所述第二接入点设备所在BSS的OBSS。
在一些实施例中，所述至少一个第一BSS内已建立的R-TWT信息是所述接入点设备从所述接入点设备关联的站点设备获取的。
在一些实施例中，所述通信单元410还用于：
向所述接入点设备关联的站点设备发送第二请求帧，所述第二请求帧用于请求所述站点设备上报所述站点设备获取的所述站点设备所在BSS的OBSS内的R-TWT信息；
接收所述接入点设备关联的站点设备发送的第二响应帧，所述第二响应帧上报所述站点设备获取的所述站点设备所在BSS的OBSS内的R-TWT信息。
在一些实施例中，所述第二请求帧为信标请求帧，所述第二响应帧为信标响应帧。
在一些实施例中，所述站点设备所在BSS的OBSS包括第三接入点设备所在的BSS，所述第二响应帧包括第三TWT元素，所述第三TWT元素用于承载所述第三接入点设备与所述第三接入点设备关联的站点设备之间已建立的R-TWT信息。
在一些实施例中，所述第三TWT元素还用于承载至少一个第三BSS的信息，其中，所述至少一个第三BSS内的传输可能对所述第三接入点设备与所述第三接入点设备关联的站点设备之间已建立的R-TWT的SP期间的传输产生干扰。
在一些实施例中，所述至少一个第一BSS内的接入点设备和所述接入点设备属于同一组，其中，同一组内的接入点设备之间共享接入点设备所在BSS内的已建立的R-TWT信息。
在一些实施例中，所述通信单元410还用于：
向所述第一站点设备发送第一响应帧，所述第一响应帧是所述第一请求帧的响应帧，所述第一响应帧包括目标R-TWT信息，其中，根据所述目标R-TWT信息确定的R-TWT和所述至少一个第一BSS内的R-TWT在时间上不重叠。
在一些实施例中，所述通信单元410还用于：
在第一BSS集合内的已建立的R-TWT信息指示的R-TWT的SP期间保持静默，其中，所述第一BSS集合内的BSS和所述接入点设备所在的BSS为OBSS。
在一些实施例中，所述第一BSS集合是所述接入点设备接收到信标帧的接入点设备所在的BSS，其中，所述信标帧中包括所述BSS内的已建立的R-TWT信息。
在一些实施例中，所述通信单元410还用于：
在第一R-TWT信息指示的R-TWT的SP期间保持静默，其中，所述第一R-TWT信息是第四BSS内已建立的R-TWT信息，所述第四BSS的OBSS包括所述接入点设备所在的BSS。
在一些实施例中，若第二站点设备和所述第一站点设备向所述接入点设备上报的OBSS信息相同，则所述接入点设备和所述第一站点设备之间建立的R-TWT信息和所述接入点设备和所述第二站点设备之间建立的R-TWT信息相同。
在一些实施例中，所述处理单元420还用于解析信标帧，获取相邻AP的BSSID信息以及信标帧中中的TWT元素中携带的已建立的R-TWT信息。
可选地，所述信标帧可以是接入点设备400从相邻接入点设备接收到的。
可选地，所述信标帧可以是第一站点设备从相邻相邻接入点设备接收到的，并通过信标请求帧和信标响应帧的交互上报给接入点设备400的。
在一些实施例中，所述接入点设备400还包括存储单元，用于存储以下信息中的至少一种：
第一类R-TWT信息；
第一类R-TWT信息对应的BSSID或颜色信息；
第一类R-TWT信息对应的干扰BSS信息；
第二类R-TWT信息；
第二类R-TWT信息对应的BSSID或颜色信息；
第二类R-TWT信息对应的干扰BSS信息。
在一些实施例中，第一类R-TWT内的传输可能受到接入点设备的传输的干扰，第二类R-TWT内的传输可能会干扰接入点设备的传输。
在一些实施例中，第一类R-TWT信息、对应的BSSID或颜色信息和对应的干扰BSS信息中的至少一项是接入点设备从相邻接入点设备发送的信标帧获取的。
在一些实施例中，第二类R-TWT信息、对应的BSSID或颜色信息和对应的干扰BSS信息中的至少一项是接入点设备从关联的站点设备获取的，关联的站点设备从相邻接入点设备获取第二类R-TWT信息、对应的BSSID或颜色信息和对应的干扰BSS信息中的至少一项。
可选地，在一些实施例中，上述通信单元可以是通信接口或收发器，或者是通信芯片或者片上系统的输入输出接口。上述处理单元可以是一个或多个处理器。
应理解，根据本申请实施例的接入点设备400可对应于本申请方法实施例中的第一接入点设备，并且接入点设备400中的各个单元的上述和其它操作和/或功能分别为了实现图9至图21所示方法200中第一接入点设备的相应流程，为了简洁，在此不再赘述。
图23是根据本申请实施例的站点设备的示意性框图。图23的站点设备500包括：
通信单元510，用于向第一接入点设备发送第一信息，所述第一信息用于指示至少一个第一基本服务集BSS的信息，所述至少一个第一BSS内的传输可能对所述站点设备和所述第一接入点设备之间建立的受限的目标唤醒时间R-TWT的服务周期SP期间的传输产生干扰，所述至少一个第一BSS是所述第一接入点设备和所述站点设备所在BSS的重叠基本服务集OBSS。
在一些实施例中，所述第一信息包括以下中的至少一项：
所述至少一个第一BSS的标识ID信息或所述至少一个第一BSS的颜色信息；
所述至少一个第一BSS内的已建立的R-TWT信息；
所述站点设备对所述至少一个第一BSS内的接入点设备所发送信号的接收强度信息。
在一些实施例中，所述第一信息携带在第一请求帧中，所述第一请求帧用于请求建立所述站点设备和所述第一接入点设备之间的R-TWT。
在一些实施例中，所述第一请求帧包括第一目标唤醒时间TWT元素，所述第一信息携带在所述第一TWT元素中。
在一些实施例中，所述第一TWT元素包括OBSS信息列表字段，所述OBSS信息字段用于指示所述至少一个第一BSS。
在一些实施例中，所述OBSS信息列表字段包括BSSID大小字段和/或至少一个BSSID字段，所述BSSID大小字段用于指示所述OBSS信息字段包括的BSSID字段的个数，所述BSSID字段用于指示所述第一BSS的ID信息。
在一些实施例中，所述OBSS信息列表字段包括BSS颜色大小字段和/或至少一个BSS颜色字段，所述BSS颜色大小字段用于指示所述OBSS信息字段包括的BSS颜色字段的个数，所述BSS颜色字段用于指示所述第一BSS的颜色信息。
在一些实施例中，所述第一TWT元素包括OBSS信息列表字段，所述OBSS列表字段用于指示所述至少一个第一BSS以及所述站点设备对所述至少一个第一BSS内的接入点设备所发送信号的接收强度信息。
在一些实施例中，所述OBSS信息列表字段包括OBSS信息大小字段和/或至少一个OBSS信息字段，其中，所述OBSS信息大小字段用于指示所述OBSS信息字段包括的OBSS信息字段的个数，所述OBSS信息字段用于指示所述至少一个第一BSS的ID信息或颜色信息，以及所述站点设备对所述至少一个第一BSS内的接入点设备所发送信号的接收强度信息。
在一些实施例中，所述第一请求帧还包括OBSS信息列表存在字段，用于指示所述第一请求帧中是否包括OBSS信息列表字段。
在一些实施例中，所述第一请求帧包括广播TWT信息字段，所述广播TWT信息字段包括所述OBSS信息列表存在字段。
在一些实施例中，所述第一请求帧还包括至少一个OBSS R-TWT元素，用于承载所述至少一个第一BSS内的已建立的R-TWT信息，其中，每个OBSS R-TWT元素用于承载一个第一BSS内的已建立的R-TWT信息。
在一些实施例中，所述第一请求帧还包括所述站点设备请求的R-TWT信息，其中，所述站点设备请求的R-TWT和所述至少一个第一BSS内的R-TWT在时间上不重叠。
在一些实施例中，所述通信单元510还用于：
向所述第一接入点设备发送第二信息，所述第二信息包括所述至少一个第一BSS内已建立的R-TWT信息。
在一些实施例中，所述至少一个第一BSS内已建立的R-TWT信息是所述站点设备从所述至少一个第一BSS内的接入点设备获取的。
在一些实施例中，所述至少一个第一BSS内已建立的R-TWT信息是所述站点设备从所述至少一个第一BSS内的接入点设备发送的信标帧获取的。
在一些实施例中，所述至少一个第一BSS包括第三接入点设备所在的BSS，所述第三接入点设备发送的信标帧包括所述第三接入点设备与所述第三接入点设备关联的站点设备之间已建立的R-TWT信息。
在一些实施例中，所述信标帧包括第三TWT元素，所述第三TWT元素用于承载所述第三接入点设备与所述第三接入点设备关联的站点设备之间已建立的R-TWT信息。
在一些实施例中，所述第三TWT元素还用于承载至少一个第三BSS的信息，其中，所述至少一个第三BSS内的传输可能对所述第三接入点设备与所述第三接入点设备关联的站点设备之间已建立的R-TWT的SP期间的传输产生干扰。
在一些实施例中，所述第二信息通过信标响应帧发送。
在一些实施例中，所述通信单元510还用于：
接收所述第一接入点设备发送的第一响应帧，所述第一响应帧是所述第一请求帧的响应帧，所述第一响应帧包括目标R-TWT信息，其中，根据所述目标R-TWT信息确定的R-TWT和所述至少一个第一BSS内的R-TWT在时间上不重叠。
在一些实施例中，所述通信单元510还用于：
除所述站点设备和所述第一接入点设备之间建立的R-TWT的SP期间之外，在第二BSS集合内的已建立的R-TWT信息指示的R-TWT的SP期间均保持静默，其中，所述第二BSS集合是所述站 点设备接收到信标帧的接入点设备所在的BSS。
在一些实施例中，所述站点设备500还包括：
处理单元，用于解析接收到的信标帧获取所述信标帧的发送方的BSSID信息，以及所述BSSID信息标识的BSS内已建立的R-TWT信息。
在一些实施例中，所述站点设备500还包括：
存储单元，用于在接收到非关联的接入点设备发送的信标帧的情况下，存储所述非关联的接入点设备的BSSID信息以及信标帧中的已建立的R-TWT信息，即OBSS R-TWT信息。
在一些实施例中，所述处理单元还用于：
在根据存储的OBSS R-TWT信息，确定请求建立的站点设备和第一接入点设备之间的R-TWT的时间参数，例如开始时间，持续时间，周期等。避免与OBSS R-TWT的SP产生冲突。
在一些实施例中，所述通信单元510还用于：
在OBSS R-TWT以及所述站点设备所在BSS内的除所述站点设备和第一接入点设备建立的R-TWT之外的其他R-TWT的SP期间，保持沉默。若所述站点设备持有TXOP，则站点设备需要在R-TWT的SP开始之前结束TXOP。
可选地，在一些实施例中，上述通信单元可以是通信接口或收发器，或者是通信芯片或者片上系统的输入输出接口。上述处理单元可以是一个或多个处理器。
应理解，根据本申请实施例的站点设备500可对应于本申请方法实施例中的第一站点设备，并且站点设备500中的各个单元的上述和其它操作和/或功能分别为了实现图9至图21所示方法200中第一站点设备的相应流程，为了简洁，在此不再赘述。
图24是本申请实施例提供的一种通信设备600示意性结构图。图24所示的通信设备600包括处理器610，处理器610可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图6所示，通信设备600还可以包括存储器620。其中，处理器610可以从存储器620中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器620可以是独立于处理器610的一个单独的器件，也可以集成在处理器610中。
可选地，如图6所示，通信设备600还可以包括收发器630，处理器610可以控制该收发器630与其他设备进行通信，具体地，可以向其他设备发送信息或数据，或接收其他设备发送的信息或数据。
其中，收发器630可以包括发射机和接收机。收发器630还可以进一步包括天线，天线的数量可以为一个或多个。
可选地，该通信设备600具体可为本申请实施例的第一接入点设备，并且该通信设备600可以实现本申请实施例的各个方法中由第一接入点设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该通信设备600具体可为本申请实施例的第一站点设备，并且该通信设备600可以实现本申请实施例的各个方法中由第一站点设备实现的相应流程，为了简洁，在此不再赘述。
图25是本申请实施例的芯片的示意性结构图。图25所示的芯片700包括处理器710，处理器710可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图7所示，芯片700还可以包括存储器720。其中，处理器710可以从存储器720中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器720可以是独立于处理器710的一个单独的器件，也可以集成在处理器710中。
可选地，该芯片700还可以包括输入接口730。其中，处理器710可以控制该输入接口730与其他设备或芯片进行通信，具体地，可以获取其他设备或芯片发送的信息或数据。
可选地，该芯片700还可以包括输出接口740。其中，处理器710可以控制该输出接口740与其他设备或芯片进行通信，具体地，可以向其他设备或芯片输出信息或数据。
可选地，该芯片可应用于本申请实施例中的第一接入点设备，并且该芯片可以实现本申请实施例的各个方法中由第一接入点设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该芯片可应用于本申请实施例中的第一站点设备，并且该芯片可以实现本申请实施例的各个方法中由第一站点设备实现的相应流程，为了简洁，在此不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
图26是本申请实施例提供的一种通信系统900的示意性框图。如图26所示，该通信系统900包括接入点设备910和站点设备920。
其中，该接入点设备910可以用于实现上述方法中由第一接入点设备实现的相应的功能，以及该站点设备920可以用于实现上述方法中由第一站点设备实现的相应的功能为了简洁，在此不再赘述。
应理解，本申请实施例的处理器可能是一种集成电路芯片，具有信号的处理能力。在实现过程中， 上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解，上述存储器为示例性但不是限制性说明，例如，本申请实施例中的存储器还可以是静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synch link DRAM，SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)等等。也就是说，本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例还提供了一种计算机可读存储介质，用于存储计算机程序。
可选的，该计算机可读存储介质可应用于本申请实施例中的第一接入点设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由第一接入点设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机可读存储介质可应用于本申请实施例中的第一站点设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由第一站点设备实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机程序产品，包括计算机程序指令。
可选的，该计算机程序产品可应用于本申请实施例中的第一接入点设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由第一接入点设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机程序产品可应用于本申请实施例中的第一站点设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由第一站点设备实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机程序。
可选的，该计算机程序可应用于本申请实施例中的第一接入点设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由第一接入点设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机程序可应用于本申请实施例中的第一站点设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由第一站点设备实现的相应流程，为了简洁，在此不再赘述。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。

Claims (60)

  1. 一种无线通信的方法，其特征在于，包括：
    第一接入点设备接收第一站点设备发送的第一信息，所述第一信息用于指示至少一个第一基本服务集BSS的信息，所述至少一个第一BSS内的传输可能对所述第一站点设备和所述第一接入点设备之间建立的受限的目标唤醒时间R-TWT的服务周期SP期间的传输产生干扰，所述至少一个第一BSS是所述第一接入点设备和所述第一站点设备所在BSS的重叠基本服务集OBSS；
    所述第一接入点设备根据所述第一信息，建立所述第一接入点设备和所述第一站点设备之间的R-TWT。
  2. 根据权利要求1所述的方法，其特征在于，所述第一信息包括以下中的至少一项：
    所述至少一个第一BSS的标识ID信息或所述至少一个第一BSS的颜色信息；
    所述至少一个第一BSS内的已建立的R-TWT信息；
    所述第一站点设备对所述至少一个第一BSS内的接入点设备所发送信号的接收强度信息。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第一信息携带在第一请求帧中，所述第一请求帧用于请求建立所述第一站点设备和所述第一接入点设备之间的R-TWT。
  4. 根据权利要求3所述的方法，其特征在于，所述第一请求帧包括第一目标唤醒时间TWT元素，所述第一信息携带在所述第一TWT元素中。
  5. 根据权利要求4所述的方法，其特征在于，所述第一TWT元素包括OBSS信息列表字段，所述OBSS信息字段用于指示所述至少一个第一BSS。
  6. 根据权利要求5所述的方法，其特征在于，所述OBSS信息列表字段包括BSSID大小字段和/或至少一个BSSID字段，所述BSSID大小字段用于指示所述OBSS信息字段包括的BSSID字段的个数，所述BSSID字段用于指示所述第一BSS的ID信息。
  7. 根据权利要求5所述的方法，其特征在于，所述OBSS信息列表字段包括BSS颜色大小字段和/或至少一个BSS颜色字段，所述BSS颜色大小字段用于指示所述OBSS信息字段包括的BSS颜色字段的个数，所述BSS颜色字段用于指示所述第一BSS的颜色信息。
  8. 根据权利要求4所述的方法，其特征在于，所述第一TWT元素包括OBSS信息列表字段，所述OBSS列表字段用于指示所述至少一个第一BSS以及所述第一站点设备对所述至少一个第一BSS内的接入点设备所发送信号的接收强度信息。
  9. 根据权利要求8所述的方法，其特征在于，所述OBSS信息列表字段包括OBSS信息大小字段和/或至少一个OBSS信息字段，其中，所述OBSS信息大小字段用于指示所述OBSS信息字段包括的OBSS信息字段的个数，所述OBSS信息字段用于指示所述至少一个第一BSS的ID信息或颜色信息，以及所述第一站点设备对所述至少一个第一BSS内的接入点设备所发送信号的接收强度信息。
  10. 根据权利要求3-9中任一项所述的方法，其特征在于，所述第一请求帧还包括OBSS信息列表存在字段，用于指示所述第一请求帧中是否包括OBSS信息列表字段。
  11. 根据权利要求10所述的方法，其特征在于，所述第一请求帧包括广播TWT信息字段，所述广播TWT信息字段包括所述OBSS信息列表存在字段。
  12. 根据权利要求3-11中任一项所述的方法，其特征在于，所述第一请求帧还包括至少一个OBSS R-TWT元素，用于承载所述至少一个第一BSS内的已建立的R-TWT信息，其中，每个OBSS R-TWT元素用于承载一个第一BSS内的已建立的R-TWT信息。
  13. 根据权利要求3-12中任一项所述的方法，其特征在于，所述第一请求帧还包括所述第一站点设备请求的R-TWT信息，其中，所述第一站点设备请求的R-TWT和所述至少一个第一BSS内的R-TWT在时间上不重叠。
  14. 根据权利要求1-13中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一接入点设备根据所述第一信息，获取所述至少一个第一BSS内的已建立的R-TWT信息。
  15. 根据权利要求14所述的方法，其特征在于，所述至少一个第一BSS内已建立的R-TWT信息是所述第一接入点设备从所述至少一个第一BSS内的接入点设备获取的。
  16. 根据权利要求15所述的方法，其特征在于，所述至少一个第一BSS内已建立的R-TWT信息是所述第一接入点设备从所述至少一个第一BSS内的接入点设备发送的信标帧获取的。
  17. 根据权利要求16所述的方法，其特征在于，所述至少一个第一BSS包括第二接入点设备所在的BSS，所述第二接入点设备发送的信标帧包括所述第二接入点设备与所述第二接入点设备关联的站点设备之间已建立的R-TWT信息。
  18. 根据权利要求17所述的方法，其特征在于，所述信标帧包括第二TWT元素，所述第二TWT元素用于承载所述第二接入点设备与所述第二接入点设备关联的站点设备之间已建立的R-TWT信 息。
  19. 根据权利要求18所述的方法，其特征在于，所述第二TWT元素还用于承载至少一个第二BSS的信息，其中，所述至少一个第二BSS内的传输可能对所述第二接入点设备与所述第二接入点设备关联的站点设备之间已建立的R-TWT的SP期间的传输产生干扰，所述至少一个第二BSS是所述第二接入点设备所在BSS的OBSS。
  20. 根据权利要求14所述的方法，其特征在于，所述至少一个第一BSS内已建立的R-TWT信息是所述第一接入点设备从所述第一接入点设备关联的站点设备获取的。
  21. 根据权利要求20所述的方法，其特征在于，所述方法还包括：
    所述第一接入点设备向所述第一接入点设备关联的站点设备发送第二请求帧，所述第二请求帧用于请求所述站点设备上报所述站点设备获取的所述站点设备所在BSS的OBSS内的R-TWT信息；
    所述第一接入点设备接收所述第一接入点设备关联的站点设备发送的第二响应帧，所述第二响应帧上报所述站点设备获取的所述站点设备所在BSS的OBSS内的R-TWT信息。
  22. 根据权利要求21所述的方法，其特征在于，所述第二请求帧为信标请求帧，所述第二响应帧为信标响应帧。
  23. 根据权利要求21或22所述的方法，其特征在于，所述站点设备所在BSS的OBSS包括第三接入点设备所在的BSS，所述第二响应帧包括第三TWT元素，所述第三TWT元素用于承载所述第三接入点设备与所述第三接入点设备关联的站点设备之间已建立的R-TWT信息。
  24. 根据权利要求23所述的方法，其特征在于，所述第三TWT元素还用于承载至少一个第三BSS的信息，其中，所述至少一个第三BSS内的传输可能对所述第三接入点设备与所述第三接入点设备关联的站点设备之间已建立的R-TWT的SP期间的传输产生干扰。
  25. 根据权利要求14所述的方法，其特征在于，所述至少一个第一BSS内的接入点设备和所述第一接入点设备属于同一组，其中，同一组内的接入点设备之间共享接入点设备所在BSS内的已建立的R-TWT信息。
  26. 根据权利要求3-25中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一接入点设备向所述第一站点设备发送第一响应帧，所述第一响应帧是所述第一请求帧的响应帧，所述第一响应帧包括目标R-TWT信息，其中，根据所述目标R-TWT信息确定的R-TWT和所述至少一个第一BSS内的R-TWT在时间上不重叠。
  27. 根据权利要求1-26中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一接入点设备在第一BSS集合内的已建立的R-TWT信息指示的R-TWT的SP期间保持静默，其中，所述第一BSS集合内的BSS和所述第一接入点设备所在的BSS为OBSS。
  28. 根据权利要求27所述的方法，其特征在于，所述第一BSS集合是所述第一接入点设备接收到信标帧的接入点设备所在的BSS，其中，所述信标帧中包括所述BSS内的已建立的R-TWT信息。
  29. 根据权利要求1-28中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一接入点设备在第一R-TWT信息指示的R-TWT的SP期间保持静默，其中，所述第一R-TWT信息是第四BSS内已建立的R-TWT信息，所述第四BSS的OBSS包括所述第一接入点设备所在的BSS。
  30. 根据权利要求1-29中任一项所述的方法，其特征在于，若第二站点设备和所述第一站点设备向所述第一接入点设备上报的OBSS信息相同，则所述第一接入点设备和所述第一站点设备之间建立的R-TWT信息和所述第一接入点设备和所述第二站点设备之间建立的R-TWT信息相同。
  31. 一种无线通信的方法，其特征在于，包括：
    第一站点设备向第一接入点设备发送第一信息，所述第一信息用于指示至少一个第一基本服务集BSS的信息，所述至少一个第一BSS内的传输可能对所述第一站点设备和所述第一接入点设备之间建立的受限的目标唤醒时间R-TWT的服务周期SP期间的传输产生干扰，所述至少一个第一BSS是所述第一接入点设备和所述第一站点设备所在BSS的重叠基本服务集OBSS。
  32. 根据权利要求31所述的方法，其特征在于，所述第一信息包括以下中的至少一项：
    所述至少一个第一BSS的标识ID信息或所述至少一个第一BSS的颜色信息；
    所述至少一个第一BSS内的已建立的R-TWT信息；
    所述第一站点设备对所述至少一个第一BSS内的接入点设备所发送信号的接收强度信息。
  33. 根据权利要求31或32所述的方法，其特征在于，所述第一信息携带在第一请求帧中，所述第一请求帧用于请求建立所述第一站点设备和所述第一接入点设备之间的R-TWT。
  34. 根据权利要求33所述的方法，其特征在于，所述第一请求帧包括第一目标唤醒时间TWT元素，所述第一信息携带在所述第一TWT元素中。
  35. 根据权利要求34所述的方法，其特征在于，所述第一TWT元素包括OBSS信息列表字段，所述OBSS信息字段用于指示所述至少一个第一BSS。
  36. 根据权利要求35所述的方法，其特征在于，所述OBSS信息列表字段包括BSSID大小字段和/或至少一个BSSID字段，所述BSSID大小字段用于指示所述OBSS信息字段包括的BSSID字段的个数，所述BSSID字段用于指示所述第一BSS的ID信息。
  37. 根据权利要求35所述的方法，其特征在于，所述OBSS信息列表字段包括BSS颜色大小字段和/或至少一个BSS颜色字段，所述BSS颜色大小字段用于指示所述OBSS信息字段包括的BSS颜色字段的个数，所述BSS颜色字段用于指示所述第一BSS的颜色信息。
  38. 根据权利要求34所述的方法，其特征在于，所述第一TWT元素包括OBSS信息列表字段，所述OBSS列表字段用于指示所述至少一个第一BSS以及所述第一站点设备对所述至少一个第一BSS内的接入点设备所发送信号的接收强度信息。
  39. 根据权利要求38所述的方法，其特征在于，所述OBSS信息列表字段包括OBSS信息大小字段和/或至少一个OBSS信息字段，其中，所述OBSS信息大小字段用于指示所述OBSS信息字段包括的OBSS信息字段的个数，所述OBSS信息字段用于指示所述至少一个第一BSS的ID信息或颜色信息，以及所述第一站点设备对所述至少一个第一BSS内的接入点设备所发送信号的接收强度信息。
  40. 根据权利要求33-39中任一项所述的方法，其特征在于，所述第一请求帧还包括OBSS信息列表存在字段，用于指示所述第一请求帧中是否包括OBSS信息列表字段。
  41. 根据权利要求40所述的方法，其特征在于，所述第一请求帧包括广播TWT信息字段，所述广播TWT信息字段包括所述OBSS信息列表存在字段。
  42. 根据权利要求33-41中任一项所述的方法，其特征在于，所述第一请求帧还包括至少一个OBSS R-TWT元素，用于承载所述至少一个第一BSS内的已建立的R-TWT信息，其中，每个OBSS R-TWT元素用于承载一个第一BSS内的已建立的R-TWT信息。
  43. 根据权利要求32-42中任一项所述的方法，其特征在于，所述第一请求帧还包括所述第一站点设备请求的R-TWT信息，其中，所述第一站点设备请求的R-TWT和所述至少一个第一BSS内的R-TWT在时间上不重叠。
  44. 根据权利要求31-43中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一站点设备向所述第一接入点设备发送第二信息，所述第二信息包括所述至少一个第一BSS内已建立的R-TWT信息。
  45. 根据权利要求44所述的方法，其特征在于，所述至少一个第一BSS内已建立的R-TWT信息是所述第一站点设备从所述至少一个第一BSS内的接入点设备获取的。
  46. 根据权利要求45所述的方法，其特征在于，所述至少一个第一BSS内已建立的R-TWT信息是所述第一站点设备从所述至少一个第一BSS内的接入点设备发送的信标帧获取的。
  47. 根据权利要求46所述的方法，其特征在于，所述至少一个第一BSS包括第三接入点设备所在的BSS，所述第三接入点设备发送的信标帧包括所述第三接入点设备与所述第三接入点设备关联的站点设备之间已建立的R-TWT信息。
  48. 根据权利要求47所述的方法，其特征在于，所述信标帧包括第三TWT元素，所述第三TWT元素用于承载所述第三接入点设备与所述第三接入点设备关联的站点设备之间已建立的R-TWT信息。
  49. 根据权利要求48所述的方法，其特征在于，所述第三TWT元素还用于承载至少一个第三BSS的信息，其中，所述至少一个第三BSS内的传输可能对所述第三接入点设备与所述第三接入点设备关联的站点设备之间已建立的R-TWT的SP期间的传输产生干扰。
  50. 根据权利要求44-49中任一项所述的方法，其特征在于，所述第二信息通过信标响应帧发送。
  51. 根据权利要求33-50中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一站点设备接收所述第一接入点设备发送的第一响应帧，所述第一响应帧是所述第一请求帧的响应帧，所述第一响应帧包括目标R-TWT信息，其中，根据所述目标R-TWT信息确定的R-TWT和所述至少一个第一BSS内的R-TWT在时间上不重叠。
  52. 根据权利要求31-51中任一项所述的方法，其特征在于，所述方法还包括：
    除所述第一站点设备和所述第一接入点设备之间建立的R-TWT的SP期间之外，所述第一站点设备在第二BSS集合内的已建立的R-TWT信息指示的R-TWT的SP期间均保持静默，其中，所述第二BSS集合是所述第一站点设备接收到信标帧的接入点设备所在的BSS。
  53. 一种接入点设备，其特征在于，包括：
    通信单元，用于用于接收第一站点设备发送的第一信息，所述第一信息用于指示至少一个第一基本服务集BSS的信息，所述至少一个第一BSS内的传输可能对所述第一站点设备和所述接入点设备之间建立的受限的目标唤醒时间R-TWT的服务周期SP期间的传输产生干扰，所述至少一个第一BSS是所述接入点设备和所述第一站点设备所在BSS的重叠基本服务集OBSS；
    处理单元，用于根据所述第一信息，建立所述接入点设备和所述第一站点设备之间的R-TWT。
  54. 一种站点设备，其特征在于，包括：
    通信单元，用于向第一接入点设备发送第一信息，所述第一信息用于指示至少一个第一基本服务集BSS的信息，所述至少一个第一BSS内的传输可能对所述站点设备和所述第一接入点设备之间建立的受限的目标唤醒时间R-TWT的服务周期SP期间的传输产生干扰，所述至少一个第一BSS是所述第一接入点设备和所述站点设备所在BSS的重叠基本服务集OBSS。
  55. 一种接入点设备，其特征在于，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求1至30中任一项所述的方法。
  56. 一种站点设备，其特征在于，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求31至52中任一项所述的方法。
  57. 一种芯片，其特征在于，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行如权利要求1至30中任一项所述的方法，或如权利要求31至52中任一项所述的方法。
  58. 一种计算机可读存储介质，其特征在于，用于存储计算机程序，所述计算机程序使得计算机执行如权利要求1至30中任一项所述的方法，或如权利要求31至52中任一项所述的方法。
  59. 一种计算机程序产品，其特征在于，包括计算机程序指令，该计算机程序指令使得计算机执行如权利要求1至30中任一项所述的方法，或如权利要求31至52中任一项所述的方法。
  60. 一种计算机程序，其特征在于，所述计算机程序使得计算机执行如权利要求1至30中任一项所述的方法，或如权利要求31至52中任一项所述的方法。
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CN105978653A (zh) * 2016-04-28 2016-09-28 西安电子科技大学 在交叠基本服务集下的干扰消除方法
CN108093478A (zh) * 2016-11-22 2018-05-29 华为技术有限公司 通信方法、装置和系统
CN111315029A (zh) * 2018-12-12 2020-06-19 华为技术有限公司 信息传输的方法和通信装置
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CN105978653A (zh) * 2016-04-28 2016-09-28 西安电子科技大学 在交叠基本服务集下的干扰消除方法
CN108093478A (zh) * 2016-11-22 2018-05-29 华为技术有限公司 通信方法、装置和系统
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