CN-122028184-A - Cooperative communication method and device

Abstract

The application provides a multi-access point MAP cooperation method and device, which are applied to the field of wireless communication. The embodiment of the application provides a simple and effective sharing mechanism, the shared AP candidate informs the shared AP of transmission resources (such as TXOP resources) which can be returned in the future, and the shared AP can select the shared AP candidate with the most returned transmission resources or the most optimal transmission resources as the shared AP to share the transmission resources. The shared AP is used as a measurement index of shared transmission resources according to the income of the shared AP, so that the complexity of information acquired by the shared AP and the complexity of a decision algorithm are reduced, and the efficiency of multi-AP cooperation is improved. The application supports IEEE protocols such as IEEE 802.11be/Wi-Fi 7/EHT protocol, IEEE 802.11bn/UHR/Wi-Fi 8 protocol, IEEE INTEGRATED MMWAVE/integrated millimeter wave/IMMW protocol, IEEE 802.15/UWB protocol, or IEEE 802.11bf/sensing protocol, and the application can also support star flash/SPARK LINK/nearlink standard protocol.

Inventors

• LI YANCHUN
• WANG XIANG

Assignees

• 华为技术有限公司

Dates

Publication Date

20260512

Application Date

20241110

Claims (20)

1. 1. A method for cooperation of multiple access points, MAPs, applied to a first AP, the method comprising: generating a status report frame, wherein the status report frame comprises first information, and the first information is used for indicating a first TXOP resource, and the first TXOP resource is returned to a second AP by the first AP; The status report frame is transmitted to a second AP (shared AP).
2. 2. The method of claim 1, wherein the first information comprises at least one of: returning time length information, returning resource size information and first TXOP resource information; The return duration information is used for indicating the duration of the first TXOP resources returned by the first AP; the returned resource size information is used to indicate a size of the first TXOP resource returned by the first AP; the first TXOP resource information is used to indicate parameters of the first TXOP resources returned by the first AP.
3. 3. The method of claim 2, wherein the first TXOP resource information comprises at least one of: Duration information, bandwidth information, channel number information, and link number information; The duration information is used for indicating the duration of the first TXOP resource; The bandwidth information is used for indicating the bandwidth size of the first TXOP resource; the channel number information is used to indicate a channel of the first TXOP resource; The link number information is used to indicate a link of the first TXOP resource.
4. 4. The method according to any one of claims 1-4, further comprising: And receiving an inquiry frame from the second AP, wherein the inquiry frame is used for indicating the first AP to feed back the status report frame.
5. 5. The method of claim 4, wherein the query frame includes shared AP candidate information, The shared AP candidate information is used to indicate one or more shared AP candidates; The one or more shared AP candidates include the first AP.
6. 6. The method of claim 4 or 5, wherein the query frame includes second information, The second information is used to indicate a second TXOP resource, which is a TXOP resource shared by the second AP.
7. 7. The method of claim 6, wherein the second information comprises at least one of: Shared duration information, shared resource size information, and second TXOP resource information; The shared duration information is used for indicating the duration of the second TXOP resources shared by the second AP; the shared resource size information is used to indicate a size of the second TXOP resources shared by the second AP; the second TXOP resource information is used to indicate parameters of the second TXOP resources shared by the second AP.
8. 8. The method according to any one of claims 4-7, wherein the query frame comprises third information, The third information is used for indicating one or more third TXOP resources, each of the one or more third TXOP resources corresponds to one of the shared AP candidates, and each of the third TXOP resources is a TXOP resource shared by the second AP to the corresponding shared AP candidate.
9. 9. The method of claim 8, wherein the third information comprises one or more third sub-information, The third sub-information includes at least one of: Candidate shared duration information, candidate shared resource size information, and third TXOP resource information; the candidate sharing duration information is used for indicating the duration of the third TXOP resource shared by the second AP to the corresponding shared AP candidate; the candidate shared resource size information is used to indicate the size of the third TXOP resources shared by the second AP to the corresponding shared AP candidate; the third TXOP resource information is used to indicate parameters of the third TXOP resources that the second AP shares to the corresponding shared AP candidate.
10. 10. The method according to any one of claims 4-9, further comprising: and determining whether to send a status report frame according to the inquiry frame.
11. 11. The method according to any one of claims 1-10, further comprising: And receiving a sharing start frame from the second AP, wherein the sharing start frame is used for indicating the second AP to share the residual TXOP resources to the first AP.
12. 12. The method of claim 11, wherein the method further comprises: and sending a sharing response frame to the second AP according to the sharing starting frame, wherein the sharing response frame is used for indicating the first AP to use the TXOP resource shared by the second AP.
13. 13. The method of claim 12, wherein the shared response frame includes fourth information, The fourth information is used to indicate a duration that the first AP uses the TXOP resources shared by the second AP.
14. 14. The method according to any one of claims 11-13, further comprising: and sending a sharing termination frame to the second AP, wherein the sharing termination frame is used for indicating the first AP to terminate using the TXOP resources shared by the second AP.
15. 15. A method for cooperation of multiple access points, MAPs, applied to a second AP, the method comprising: Receiving one or more status report frames, each status report frame including first information for indicating a first TXOP resource that is returned by a shared AP candidate to the second AP; and determining a shared AP according to the one or more status report frames, wherein the shared AP is an object of the second AP sharing the TXOP resource.
16. 16. The method of claim 15, wherein the first information comprises at least one of: returning time length information, returning resource size information and first TXOP resource information; the return duration information is used for indicating the duration of the first TXOP resources returned by the shared AP candidate; The refund resource size information is used to indicate a size of the first TXOP resources refunded by the shared AP candidate; The first TXOP resource information is used to indicate parameters of the first TXOP resources returned by the shared AP candidate.
17. 17. The method of claim 15 or 16, wherein the first TXOP resource information comprises at least one of: Duration information, bandwidth information, channel number information, and link number information; The duration information is used for indicating the duration of the first TXOP resource; The bandwidth information is used for indicating the bandwidth size of the first TXOP resource; the channel number information is used to indicate a channel of the first TXOP resource; The link number information is used to indicate a link of the first TXOP resource.
18. 18. The method according to any one of claims 15-17, wherein said determining, from said one or more status report frames, to be shared by said shared AP comprises: And selecting a shared AP candidate corresponding to the optimal resource as the shared AP according to the first information.
19. 19. The method according to any one of claims 15-18, further comprising: and sending an inquiry frame to one or more shared AP candidates, wherein the inquiry frame is used for indicating the corresponding shared AP candidate to feed back the status report frame.
20. 20. The method of claim 19, wherein the query frame includes shared AP candidate information, The shared AP candidate information is used to indicate the one or more shared AP candidates.

Description

Cooperative communication method and device Technical Field The present application relates to the field of wireless technologies, and in particular, to a cooperative communication method and apparatus. Background With the rapid development of wireless lan WLAN (wireless local area network), access AP (access point) devices become more and more dense, so that there is serious interference between multiple APs. Therefore, the next generation Wi-Fi technology considers that a plurality of APs cooperate, the shared AP can share the transmission resources acquired by itself to other APs, the AP can be called as a shared AP, and the shared AP can quickly acquire additional transmission resources and transmit data with low time delay, so that the use efficiency of the transmission resources is improved. In a multi-access point, MAP, cooperation scenario, there is typically one shared AP and multiple shared AP candidates, the shared AP needs to determine whether to share a transmission resource according to information provided by the shared AP candidates, and which shared AP candidate the transmission resource should share. What information should be provided by the shared AP candidates so that the shared AP can make decisions fairly and quickly is a current challenge. Disclosure of Invention The embodiment of the application provides a multi-access point (MAP) cooperation method and device, which can reduce the complexity and the cost of selecting a shared AP (SHARED ACCESS point) by a shared access point (SHARING ACCESS point) and improve MAP cooperation efficiency. In a first aspect, an embodiment of the present application provides a MAP collaboration method, where the method may be applied to a shared AP, or a chip or a functional module in the shared AP, etc. The shared AP may also be referred to as a first AP. The method comprises the following steps: Generating a status report frame, wherein the status report frame comprises first information, the first information is used for indicating a first TXOP (transmit opportunity) resource, the first TXOP resource is returned to a second AP by the first AP, and the status report frame is sent to the second AP. The second AP may also be referred to as a shared AP. In the embodiment of the present application, the first AP indicates a future sharable TXOP resource, that is, a first TXOP resource, which may also be referred to as a returned TXOP resource, to the second AP, so as to obtain a currently shared TXOP resource of the second AP, where the shared TXOP resource may also be referred to as a second TXOP resource. A simple and effective method for selecting the shared AP is provided for the second AP, namely the shared AP, and MAP cooperation overhead is reduced. In one possible implementation manner, the first information includes at least one of return duration information, return resource size information and first TXOP resource information, wherein the return duration information is used for indicating a duration of the first TXOP resource returned by the first AP, the return resource size information is used for indicating a size of the first TXOP resource returned by the first AP, and the first TXOP resource information is used for indicating a parameter of the first TXOP resource returned by the first AP. In the embodiment of the application, the first AP can indicate the time length of the TXOP resource returned in the future, the size of the returned TXOP resource, or the parameters of the returned TXOP resource to the second AP, provide a simple and effective index for the second AP, select the shared AP, and provide the communication efficiency of MAP cooperation. In one possible implementation, the first TXOP resource information includes at least one of duration information, bandwidth information, channel number information, and link number information, wherein the duration information is used to indicate a duration of the first TXOP resource, the bandwidth information is used to indicate a bandwidth size of the first TXOP resource, the channel number information is used to indicate a channel of the first TXOP resource, and the link number information is used to indicate a link of the first TXOP resource. In the embodiment of the application, the first AP can indicate the specific parameters of the TXOP resources returned in the future to the second AP, thereby providing a simple and effective basis for the second AP to select the shared AP and improving the MAP cooperation efficiency. In one possible implementation, the method further includes receiving an inquiry frame from the second AP, the inquiry frame being used to instruct the first AP to feed back the status report frame. In the embodiment of the application, the first AP can timely feed back the status report frame according to the received query frame, thereby acquiring the TXOP resource shared by the second AP and improving the MAP cooperation efficiency. In one possible implementation,