Wireless communication method, and device and storage medium

Patent metadata

Field	Value
Publication number	US-2026067971-A1
Application number	US-202519384442-A
Country	US
Kind code	A1
Filing date	Nov 10, 2025
Priority date	Aug 2, 2023
Publication date	Mar 5, 2026
Grant date	—

Abstract

Provided are a wireless communication method, an access point multi-link device (AP MLD) and a non-AP MLD. The method includes: a non-AP MLD receives or transmits a first frame, wherein the first frame is used for the non-AP MLD to transition between a first AP MLD and a second AP MLD, the first AP MLD and the second AP MLD are affiliated with a same third AP MLD or different third AP MLDs, and the third AP MLD is a logical AP MLD.

First claim

1 . A method for wireless communication, comprising:
receiving or transmitting, by a non-access point multi-link device (non-AP MLD), a first frame, wherein the first frame is used for the non-AP MLD to transition between a first AP MLD and a second AP MLD, the first AP MLD and the second AP MLD are affiliated with a same third AP MLD or different third AP MLDs, and the third AP MLD is a logical AP MLD.

2 . The method of claim 1 , wherein the third AP MLD is configured for at least one of the following:
providing connection services between the non-AP MLD or an affiliated AP MLD and a distribution system (DS); maintaining data continuity of the non-AP MLD when performing transition between the first AP MLD and the second AP MLD during roaming; authentication and/or association or reassociation of the non-AP MLD; security association (SA) of the non-AP MLD; distribution of all or part of SA information of the non-AP MLD; synchronization of all or part of states and/or buffer information of upper-upper Medium Access Control (upper-UMAC) of affiliated AP MLDs; managing distribution of authentication information for a link of the non-AP MLD; managing affiliated AP MLD-level association or reassociation between the non-AP MLD and an affiliated AP MLD; selecting, for a target AP MLD among at least one affiliated AP MLD that establishes a multi-link with the non-AP MLD, a MAC corresponding to the target AP MLD for transmission; synchronization of first data among different affiliated AP MLDs, wherein the first data is used to maintain data continuity of communication between the non-AP MLD and the affiliated AP MLD or the DS; or exchange or indication of MLD-level information through a MAC sublayer of the affiliated AP MLD.

3 . The method of claim 1 , wherein the first AP MLD and the second AP MLD belong to a same mobility domain (MD) within a same extended service set (ESS), and the third AP MLD is an MD AP MLD.

4 . The method of claim 1 , wherein the first frame comprises at least one of the following:
a first transition frame for initiating transition of the non-AP MLD from the first AP MLD to the second AP MLD; a second transition frame used for the first AP MLD to synchronize second data to the second AP MLD, wherein the second data is used for maintaining data communication between the non-AP MLD and the first AP MLD or the third AP MLD to maintain continuity of data communication after the non-AP MLD transitions to the second AP MLD; or a third transition frame used for the non-AP MLD to associate or reassociate with the second AP MLD.

5 . The method of claim 4 , wherein the first transition frame comprises at least one of the following:
a transition request frame sent by the non-AP MLD to the second AP MLD for requesting transition from the first AP MLD to the second AP MLD; or a transition response frame sent by the second AP MLD to the non-AP MLD for responding to the transition request frame.

6 . The method of claim 4 , wherein the second data comprises at least one of second information or third information, wherein
the second information is information of block ack agreement context of the first AP MLD; the third information is information of SA context of the first AP MLD.

7 . The method of claim 6 , wherein the second transition frame comprises a block ack agreement context element for indicating information of the block ack agreement context.

8 . The method of claim 7 , wherein the block ack agreement context element comprises a block ack agreement context parameters set list field, and the block ack agreement context parameters set list field comprises at least one block ack agreement context parameter set subfield, and one block ack agreement context parameter set subfield indicates one block ack agreement context parameter set.

9 . The method of claim 8 , wherein the block ack agreement context parameter set subfield indicates at least one of:
a role of the device hosting the corresponding block ack agreement context in the block ack agreement context; a peer device targeted by the corresponding block ack agreement context; a block ack parameter set; or a block ack timeout value.

10 . The method of claim 9 , wherein if the block ack agreement context parameter set subfield indicates that the role of the device hosting the corresponding block ack agreement context in the block ack agreement context is an originator, the block ack agreement context parameter set subfield further indicates at least one of a transmission window starting sequence number or a transmission window size.

11 . The method of claim 9 , wherein the block ack parameter set comprises at least one of the following:
third indication information indicating whether an aggregated MAC service data unit (A-MSDU) is supported; a block ack policy; a traffic identifier (TID); or a buffer size.

12 . An access point multi-link device (AP MLD), comprising: a processor and a memory, wherein
the memory is configured to store a computer program, and the processor is configured to invoke and run the computer program stored in the memory, to cause the AP MLD to transmit or receive a first frame, wherein the first frame is used for a non-AP MLD to transition between a first AP MLD and a second AP MLD, the first AP MLD and the second AP MLD are affiliated with a same third AP MLD or different third AP MLDs, the third AP MLD is a logical AP MLD, and the AP MLD is the first AP MLD or the second AP MLD.

13 . The AP MLD of claim 12 , wherein the third AP MLD is configured for at least one of the following:
providing connection services between the non-AP MLD or an affiliated AP MLD and a distribution system (DS); maintaining data continuity of the non-AP MLD when performing transition between the first AP MLD and the second AP MLD during roaming; authentication and/or association or reassociation of the non-AP MLD; security association (SA) of the non-AP MLD; distribution of all or part of SA information of the non-AP MLD; synchronization of all or part of states and/or buffer information of upper-upper Medium Access Control (upper-UMAC) of affiliated AP MLDs; managing distribution of authentication information for a link of the non-AP MLD; managing affiliated AP MLD-level association or reassociation between the non-AP MLD and an affiliated AP MLD; selecting, for a target AP MLD among at least one affiliated AP MLD that establishes a multi-link with the non-AP MLD, a MAC corresponding to the target AP MLD for transmission; synchronization of first data among different affiliated AP MLDs, wherein the first data is used to maintain data continuity of communication between the non-AP MLD and the affiliated AP MLD or the DS; or exchange or indication of MLD-level information through a MAC sublayer of the affiliated AP MLD.

14 . The AP MLD of claim 12 , wherein the first AP MLD and the second AP MLD belong to a same mobility domain (MD) within a same extended service set (ESS), and the third AP MLD is an MD AP MLD.

15 . The AP MLD of claim 12 , wherein the first frame comprises at least one of the following:
a first transition frame for initiating transition of the non-AP MLD from the first AP MLD to the second AP MLD; a second transition frame used for the first AP MLD to synchronize second data to the second AP MLD, wherein the second data is used for maintaining data communication between the non-AP MLD and the first AP MLD or the third AP MLD to maintain continuity of data communication after the non-AP MLD transitions to the second AP MLD; or a third transition frame used for the n

Assignees

• Guangdong Oppo Mobile Telecommunications Corp Ltd

Inventors

• Lu Liuming
• Luo Chaoming
• Zhang Jun

Classifications

• H04W48/20

  Selecting an access point · CPC title

• H04W12/00

  Security arrangements; Authentication; Protecting privacy or anonymity · CPC title

• H04W76/15 Primary

  Setup of multiple wireless link connections · CPC title

• H04L5/0055

  Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861) · CPC title