IP Library › Granted Patent US 12,323,865
Granted Patent B2
US 12,323,865 · App. 18/317,092 · Granted Jun 3, 2025

Method of indicating changes by an access point

Inventors: Ming Gan (Shenzhen, CN); Bo Gong (Shenzhen, CN); Yuxin Lu (Shenzhen, CN); Jian Yu (Shenzhen, CN); Yunbo Li (Shenzhen, CN); Mengshi Hu (Shenzhen, CN)
Assignee: Huawei Technologies Co., Ltd
H04W36/0069H04W36/0072H04W76/15H04W88/10H04W84/12
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Quick Facts
Patent No.
US 12,323,865
App. No.
18/317,092
Granted
Jun 3, 2025
Kind
B2
Abstract

In a communication method, a first access point (AP) in a first AP multi-link device generates a management frame that includes a capability information field. The capability information field includes first indication information indicating whether a second AP, which is also in the first AP multi-link device, has performed a channel switch. The first AP then sends the management frame to a first station (STA).

Claims (51)

1. A communication method performed by a first access point (AP), comprising:

generating a management frame comprising first critical update flag signaling and a critical parameter update value of a second AP of a plurality of second APs; and

sending the management frame to a first station (STA):

wherein the critical parameter update value of the second AP is incremented by 1 in response to determining that a critical basic service set (BSS) parameter event of the second AP has occurred;

wherein the first critical update flag signaling is set to a first value based on:

at least one of the plurality of second APs being removed from a first AP multi-link device,

at least one of the plurality of second APs being newly added to the first AP multi-link device,

a change in a disable/enable state of one or more second APs in the first AP multi-link device, or

the critical parameter update value of the second AP having changed;

wherein the first AP and the second AP are both in the first AP multi-link device;

wherein the management frame further comprises second critical update flag signaling and a critical parameter update value of a third AP of a plurality of third APs;

wherein the critical parameter update value of the third AP is incremented by 1 in response to determining that a critical BSS parameter event of the third AP has occurred;

wherein the second critical update flag signaling is set to a first value based on:

information about at least one of the plurality of third APs in a second AP multi-link device having changed,

the critical parameter update value of the third AP having changed, or

a critical parameter update value of a non-transmitted AP in the second AP multi-link device having changed;

wherein the third AP is not a non-transmitted AP;

wherein the third AP or the non-transmitted AP in the second AP multi-link device and the first AP belong to a same multiple basic service set identifier (BSSID) set.

2. The method according to claim 1 , wherein the first value to which the first critical update flag signaling is set is maintained up to a next delivery traffic indication map (DTIM) beacon frame.

3. The method according to claim 1 , wherein the information about the at least one of the plurality of third APs in the second AP multi-link device having changed corresponds to:

the at least one of the plurality of third APs having been removed from the second AP multi-link device;

the at least one of the plurality of third APs having been newly added to the second AP multi-link device;

a change in a disable/enable state of one or more third APs in the second AP multi-link device; or

a change in an operating link of one or more third APs in the second AP multi-link device.

4. The method according to claim 1 , wherein the first value to which the second critical update flag signaling is set is maintained up to a next delivery traffic indication map (DTIM) beacon frame.

5. A first access point (AP), comprising:

a memory storing executable instructions; a processor configured to execute the executable instructions to perform operations comprising:

generating a management frame comprising first critical update flag signaling and a critical parameter update value of a second AP of a plurality of second APs; and

sending the management frame to a first station (STA):

wherein the critical parameter update value of the second AP is incremented by 1 in response to determining that a critical basic service set (BSS) parameter event of the second AP has occurred;

wherein the first critical update flag signaling is set to a first value based on:

at least one of the plurality of second APs being removed from a first AP multi-link device,

at least one of the plurality of second APs being newly added to the first AP multi-link device,

a change in a disable/enable state of one or more second APs in the first AP multi-link device, or

the critical parameter update value of the second AP having changed;

wherein the first AP and the second AP are both in the first AP multi-link device;

wherein the management frame further comprises second critical update flag signaling and a critical parameter update value of a third AP of a plurality of third APs;

wherein the critical parameter update value of the third AP is incremented by 1 in response to determining that a critical BSS parameter event of the third AP has occurred;

wherein the second critical update flag signaling is set to a first value based on:

information about at least one of the plurality of third APs in a second AP multi-link device having changed,

the critical parameter update value of the third AP having changed, or

a critical parameter update value of a non-transmitted AP in the second AP multi-link device having changed;

wherein the third AP is not a non-transmitted AP;

wherein the third AP or the non-transmitted AP in the second AP multi-link device and the first AP belong to a same multiple basic service set identifier (BSSID) set.

6. The first AP according to claim 5 , wherein the first value to which the first critical update flag signaling is set is maintained up to a next delivery traffic indication map (DTIM) beacon frame.

7. The first AP according to claim 5 , wherein the information about the at least one of the plurality of third APs in the second AP multi-link device having changed corresponds to:

the at least one of the plurality of third APs having been removed from the second AP multi-link device;

the at least one of the plurality of third APs having been newly added to the second AP multi-link device;

a change in a disable/enable state of one or more third APs in the second AP multi-link device; or

a change in an operating link of one or more third APs in the second AP multi-link device.

8. The method according to claim 5 , wherein the first value to which the second critical update flag signaling is set is maintained up to a next delivery traffic indication map (DTIM) beacon frame.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 25, 2025
From: GAN, MING; GONG, BO; LU, YUXIN; YU, JIAN; LI, YUNBO; HU, MENGSHI
To: HUAWEI TECHNOLOGIES CO., LTD.
Reel/Frame 070325/0458 →
Priority Claims (2)
CN 202110581012.8 · May 26, 2021 · national
CN 202110821657.4 · Jul 20, 2021 · national
Continuity (2)
Continuation PCTCN2022095195 · May 26, 2022
Related Publication 20230284107A1 · Sep 7, 2023
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Cited By (1)
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