# US 2025/0159624 A1 · Synchronization in access point (ap) coordination

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- Number: US 2025/0159624 A1
- Document ID: US20250159624A1
- Status: Published application
- Kind: A1
- Application number: 19/025,633
- Filed: 2025-01-16
- Published: 2025-05-15
- Earliest claimed: 2018-10-26
- Assignees: QUALCOMM Incorporated
- Applicants: QUALCOMM Incorporated
- Inventors: Abhishek Pramod PATIL; George CHERIAN; Alfred ASTERJADHI
- Web page: https://patentgrep.com/patent/US20250159624A1

## CPC

- H04W 56/001: {Synchronization between nodes}
- H04B 7/024: Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
- H04B 7/10: Polarisation diversity; Directional diversity
- H04W 56/002: {Mutual synchronization}
- H04W 84/12: WLAN [Wireless Local Area Networks]
- H04W 84/18: Self-organising networks, e.g. ad-hoc networks or sensor networks
- H04W 88/08: Access point devices
- H04W 92/20: between access points
- Y02D 30/70: in wireless communication networks
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04B: TRANSMISSION
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

Certain aspects of the present disclosure provide an apparatus for wireless communication. The apparatus generally includes a processing system configured to generate a message comprising coordination information, wherein the apparatus is associated with a first AP, the message to be used for coordinated communications by the first AP and a second AP, wherein the first AP and the second AP are associated with different basic service sets (BSSs), and an interface configured to output the message for transmission during a networking coordination window of a networking cluster.

## Claims

### Claim 1

An apparatus for wireless communication, comprising:
one or more memories; and
one or more processors, coupled to the one or more memories, configured to:
generate a message comprising coordination information, wherein the apparatus comprises a first access point (AP), wherein the coordination information is associated with the first AP and one or more other APs comprising at least a second AP, and wherein the first AP and the second AP are associated with different basic service sets (BSSs); and
transmit the message.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein the message is transmitted to the one or more other APs.

### Claim 3 (depends on 1)

The apparatus of claim 1, wherein the coordination information comprises service period (SP) information to be used for coordinated communications by the first AP and the second AP.

### Claim 4 (depends on 1)

The apparatus of claim 1, wherein the coordination information comprises target wakeup time (TWT) information comprising one or more service periods (SPs).

### Claim 5 (depends on 1)

The apparatus of claim 1, wherein the coordination information comprises a broadcast target wakeup time (B-TWT) service period (SP).

### Claim 6 (depends on 1)

The apparatus of claim 1, wherein the coordination information indicates coordinated beamforming (CoBF) between the first AP and the second AP.

### Claim 7 (depends on 6)

The apparatus of claim 6, wherein the CoBF between the first AP and the second AP enables the first AP and the second AP to coordinate transmissions between their respective BSSs.

### Claim 8 (depends on 6)

The apparatus of claim 6, wherein:
the first AP is configured to serve a first station (STA);
the second AP is configured to serve a second STA;
the first AP is configured to transmit a null signal to the second STA while serving the first STA in accordance with the CoBF between the first AP and the second AP; and
the second AP is configured to transmit a null signal to the first STA while serving the second STA in accordance with the CoBF between the first AP and the second AP.

### Claim 9 (depends on 1)

The apparatus of claim 1, wherein the coordination information indicates spatial reuse (SR) information for coordination of communications by the first AP and the second AP.

### Claim 10 (depends on 1)

The apparatus of claim 1, wherein the first AP and the second AP are within communication range of each other.

### Claim 11 (depends on 1)

The apparatus of claim 1, wherein the first AP and the second AP are not within communication range of each other.

### Claim 12 (depends on 1)

The apparatus of claim 1, wherein at least one of the first AP or the second AP identifies another AP based on an association identifier (AID) value assigned to the another AP.

### Claim 13

A method for wireless communication performed by an apparatus, comprising:
generating a message comprising coordination information, wherein the apparatus comprises a first access point (AP), wherein the coordination information is associated with the first AP and one or more other APs comprising at least a second AP, and wherein the first AP and the second AP are associated with different basic service sets (BSSs); and
transmitting the message.

### Claim 14 (depends on 13)

The method of claim 13, wherein the message is transmitted to the one or more other APs.

### Claim 15 (depends on 13)

The method of claim 13, wherein the coordination information comprises service period (SP) information to be used for coordinated communications by the first AP and the second AP.

### Claim 16 (depends on 13)

The method of claim 13, wherein the coordination information comprises target wakeup time (TWT) information comprising one or more service periods (SPs).

### Claim 17 (depends on 13)

The method of claim 13, wherein the coordination information comprises a broadcast target wakeup time (B-TWT) service period (SP).

### Claim 18 (depends on 13)

The method of claim 13, wherein the coordination information indicates coordinated beamforming (CoBF) between the first AP and the second AP.

### Claim 19 (depends on 18)

The method of claim 18, wherein the CoBF between the first AP and the second AP enables the first AP and the second AP to coordinate transmissions between their respective BSSs.

### Claim 20 (depends on 18)

The method of claim 18, wherein:
the first AP is configured to serve a first station (STA);
the second AP is configured to serve a second STA;
the first AP is configured to transmit a null signal to the second STA while serving the first STA in accordance with the CoBF between the first AP and the second AP; and
the second AP is configured to transmit a null signal to the first STA while serving the second STA in accordance with the CoBF between the first AP and the second AP.