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CN-122002602-A - Communication method and device

CN122002602ACN 122002602 ACN122002602 ACN 122002602ACN-122002602-A

Abstract

The present application relates to the field of communications technologies, and in particular, to a communications method and apparatus. The application can be applied to IEEE802.11ax standard, 802.11be standard, 802.11bn standard and the like, and other standards of IEEE802.11 series, such as 802.15 standard, 802.11bf standard or IMMW standard or star flash standard and the like. In the scheme provided by the embodiment of the application, the AP can enable the non-AP STA in the BSS where the AP is located to acquire the non-cooperative BSS of the BSS where the AP is located by combining the non-cooperative BSS indication information in the first frame by sending the first frame. Therefore, when the AP or the non-AP STA receives the inter-BSS PPDU, the AP or the non-AP STA can decide whether to switch to the secondary channel or not, and the non-AP STA and the AP are ensured to work on the same channel. And consequently improves system performance.

Inventors

  • YANG MAO
  • LI BO
  • LI YUNBO
  • GUO YUCHEN

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260508
Application Date
20241108

Claims (20)

  1. 1. A method of communication, the method being applied to a first access point, AP, the method comprising: generating a first frame, wherein the first frame comprises non-cooperative Basic Service Set (BSS) indication information, the non-cooperative BSS indication information is used for indicating a non-cooperative BSS, and the non-cooperative BSS is a BSS where an AP which has no cooperative relation with the first AP is located in a neighbor BSS of the BSS where the first AP is located; and sending the first frame.
  2. 2. The method of claim 1, wherein the step of determining the position of the substrate comprises, The non-cooperative BSS indication information includes information of the non-cooperative BSS, or The non-cooperative BSS indication information includes information of a cooperative BSS, which is a BSS where an AP having a cooperative relationship with the first AP is located in the neighbor BSS, or The non-cooperative BSS indication information includes information of the neighbor BSS and information of the non-cooperative BSS, or The non-cooperative BSS indication information includes information of the neighbor BSS and information of a cooperative BSS.
  3. 3. The method according to claim 1 or 2, characterized in that the method further comprises; and transmitting a fourth frame, wherein the fourth frame comprises information of non-AP STA of a non-access point site in the BSS where the first AP is located.
  4. 4. A method of communication, the method being applied to a non-access point station, non-AP STA, the method comprising: Receiving a first frame, wherein the first frame comprises non-cooperative Basic Service Set (BSS) indication information, the non-cooperative BSS indication information is used for indicating a non-cooperative BSS, the non-cooperative BSS is a BSS where an AP (access point) which has no cooperative relation with a first Access Point (AP) in a neighbor BSS of the BSS where the non-AP STA is located, and the first AP is an AP in the BSS where the non-AP STA is located; And analyzing the first frame.
  5. 5. The method according to claim 4, wherein the method further comprises: Receiving a physical layer protocol data unit PPDU in a primary channel; According to the PPDU, switching to a non-primary channel if a condition is satisfied, the condition including: the PPDU is from the non-cooperative BSS.
  6. 6. The method according to claim 4, wherein the method further comprises: Receiving a PPDU at a primary channel; in the event that the PPDU is not from the uncooperative BSS, it resides in the primary channel.
  7. 7. The method according to any one of claim 4 to 6, wherein, The non-cooperative BSS indication information includes information of the non-cooperative BSS, or The non-cooperative BSS indication information includes information of a cooperative BSS, which is a BSS where an AP having a cooperative relationship with the first AP is located in the neighbor BSS, or The non-cooperative BSS indication information includes information of the neighbor BSS and information of the non-cooperative BSS, or The non-cooperative BSS indication information includes information of the neighbor BSS and information of a cooperative BSS.
  8. 8. The method of any one of claims 1-7, further comprising; and receiving a fourth frame, wherein the fourth frame comprises information of a non-AP STA in the BSS where the first AP is located.
  9. 9. A method of communication, the method being applied to a master access point, AP, the method comprising: Generating a second frame, wherein the second frame comprises multi-MAP cooperative transmission indication information, and the MAP cooperative transmission indication information is used for indicating whether the main AP performs MAP cooperative transmission in the residual transmission opportunity (TXOP) duration; And sending the second frame.
  10. 10. The method of claim 9, wherein the second frame further comprises information of cooperative APs involved in the cooperative transmission of the MAP.
  11. 11. The method of claim 9, wherein the MAP cooperative transmission indication information is used to indicate that the master AP will perform MAP cooperative transmission for the remaining TXOP duration, comprising: the MAP cooperative transmission indication information includes information of cooperative APs participating in MAP cooperative transmission.
  12. 12. A communication method, wherein the method is applied to a slave AP, or a non-AP STA in a BSS where the slave AP is located, the method comprising: Receiving a second frame in a main channel, wherein the second frame comprises multi-MAP cooperative transmission indication information, the MAP cooperative transmission indication information is used for indicating whether a main AP can perform MAP cooperative transmission in the residual transmission opportunity (TXOP) duration, and the main AP has a cooperative relationship with the auxiliary AP; And analyzing the second frame.
  13. 13. The method of claim 12, wherein the second frame further comprises information of cooperative APs involved in the cooperative transmission of the MAP.
  14. 14. The method of claim 12, wherein the MAP cooperative transmission indication information is used to indicate that the master AP will perform MAP cooperative transmission for the remaining TXOP duration, comprising: the MAP cooperative transmission indication information includes information of cooperative APs participating in MAP cooperative transmission.
  15. 15. The method according to any one of claims 12-14, further comprising: according to the second frame, switching to a non-primary channel if a condition is satisfied, the condition including: the MAP cooperative transmission indication information indicates that the main AP does not perform MAP cooperative transmission in the remaining TXOP duration, or The MAP cooperative transmission indication information indicates that the master AP can perform MAP cooperative transmission in the remaining TXOP duration, and the slave AP is not included in the cooperative APs participating in the MAP cooperative transmission, or And the information of the cooperative AP participating in the MAP cooperative transmission is not included in the information of the cooperative AP included in the MAP cooperative transmission indication information.
  16. 16. The method according to any one of claims 12-14, further comprising: The MAP cooperative transmission indication information indicates that the master AP can perform MAP cooperative transmission in the remaining TXOP duration, and the slave AP resides in the master channel, or The MAP cooperative transmission indication information indicates that the master AP can perform MAP cooperative transmission in the remaining TXOP duration, and the cooperative AP participating in the MAP cooperative transmission comprises the slave AP, the slave AP resides in the master channel, or And if the information of the cooperative AP participating in the MAP cooperative transmission included in the MAP cooperative transmission instruction information includes the information of the slave AP, the slave AP resides in the master channel.
  17. 17. A communication method, wherein the method is applied to a slave AP, or a non-AP STA in a BSS where the slave AP is located, the method comprising: receiving a physical layer protocol data unit PPDU on a primary channel; According to the PPDU, switching to a non-primary channel if a condition is satisfied, the condition including: The PPDU is from a primary AP; the slave AP does not participate in MAP cooperative transmission in the transmission time of the PPDU.
  18. 18. The method of claim 17, wherein the method further comprises: Switching back to the main channel at or before the transmission end time of the PPDU.
  19. 19. The method of claim 17 or 18, wherein the conditions further comprise a transmission time period of the PPDU being greater than a transmission time period threshold.
  20. 20. The method of any of claims 17-19, wherein the slave AP not participating in a MAP cooperative transmission for a transmission time of the PPDU comprises: The PPDU does not include a cooperative control frame, or The PPDU includes the cooperation control frame which does not schedule the slave AP to participate in MAP cooperation transmission, or The PPDU includes the cooperative control frame that schedules the slave AP to participate in a MAP cooperative transmission.

Description

Communication method and device Technical Field The present application relates to the field of communications technologies, and in particular, to a communications method and apparatus. Background Increasing throughput is a continuing technical goal of cellular networks and wireless local area networks (wireless local area network, WLAN) to evolve. The standards for WLAN systems are discussed mainly in the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard group, where throughput rates have been continuously improved in the previous standards of 802.11a/b/g/n/ac/ax/be, etc. Currently, the next generation WLAN standard IEEE 802.11bn, ultra high reliability (ultra high reliability, UHR) is under study. There is currently a carrier sense multiple access/collision avoidance (CARRIER SENSE multiple ACCESS WITH collision avoidance, CSMA/CA) mechanism. The interference problem caused by the simultaneous use of channels by a plurality of stations can be solved through a CSMA/CA mechanism. At the same time, the standard also supports stations that can transmit on non-primary channels, such as non-primary channel access (NPCA). The standard also supports multiple access point (multipleaccesspoint, MAP) collaboration. However, when the NPCA mechanism and the MAP cooperative mechanism exist at the same time, there may be a case where the station cannot operate effectively, affecting the system performance. Disclosure of Invention The embodiment of the application provides a communication method and a communication device, which can improve the system performance and the communication efficiency. In a first aspect, an embodiment of the present application provides a communication method, where the method is applied to a first AP, where the first AP includes a WLAN device (including a Wi-Fi device or a device involved in a star-flash alliance, etc.), or a chip, a functional module, a processing system, a communication component, or the like that may be disposed in the WLAN device. The method comprises the following steps: Generating a first frame, wherein the first frame comprises non-cooperative Basic Service Set (BSS) indication information, the non-cooperative BSS indication information is used for indicating a non-cooperative BSS, the non-cooperative BSS is a BSS where an AP which has no cooperative relation with a first AP is located in a neighbor BSS of the BSS where the first AP is located, and transmitting the first frame. If the BSS where the first AP is located is the first BSS, the non-cooperative BSS is a BSS where an AP having no cooperative relationship with the first AP is located in a neighboring BSS of the first BSS. That is, the AP in the non-cooperative BSS has no cooperative relationship with the first AP. A cooperative BSS is a BSS in which an AP in cooperative relationship with a first AP is located in a neighboring BSS of the first BSS. That is, the APs in the cooperative BSS have a cooperative relationship with the first AP. Both the non-cooperative BSS and the cooperative BSS belong to neighbor BSSs of the first BSS. That is, the AP in the non-cooperative BSS and the AP in the cooperative BSS are neighbor APs of the first AP. The first AP includes, but is not limited to, a master AP or a slave AP according to the second aspect to the fifth aspect. In the embodiment of the application, the first frame indicates the non-cooperative BSS, so that a non-access point station (non-access point station, non-AP STA) receiving the first frame can distinguish whether the PPDU is from the non-cooperative BSS, and based on the result, whether to switch to the non-primary channel is determined. Therefore, the first AP and the non-AP STA work in the same channel, the system performance is improved, and the communication efficiency is improved. In one possible implementation, the non-cooperative BSS indication information includes information of a non-cooperative BSS, or the non-cooperative BSS indication information includes information of a cooperative BSS, the cooperative BSS being a BSS where an AP in a neighbor BSS has a cooperative relationship with the first AP is located, or the non-cooperative BSS indication information includes information of a neighbor BSS and information of a non-cooperative BSS, or the non-cooperative BSS indication information includes information of a neighbor BSS and information of a cooperative BSS. In the embodiment of the present application, the BSS information includes at least one of BSS identifier (BSSID) or BSS color (BSS color) of the BSS. Optionally, a Medium Access Control (MAC) address of an AP within the BSS is the BSSID of the BSS. The information about BSSs herein applies to information of non-cooperative BSSs, information of cooperative BSSs, or information of neighbor BSSs. Neighbor BSSs include both non-cooperative BSSs and cooperative BSSs. In one possible implementation, the method further includes transmitting a fourth frame including in