US-20260128826-A1 - COMMUNICATIONS BETWEEN ACCESS POINTS WITH DIFFERENT CHANNEL CONFIGURATIONS

US20260128826A1US 20260128826 A1US20260128826 A1US 20260128826A1US-20260128826-A1

Abstract

This disclosure provides methods, components, devices and systems for communications between access points with different channel configurations. Some aspects more specifically relate to performing a CAP procedure including coordinating APs with different primary channels. In some examples, a first access point (AP) may transmit, to one or more second APs, a physical protocol data unit (PPDU) including information associated with coordination of resources for a coordinated access point (CAP) procedure. At least a portion of the PPDU may be duplicated and transmitted via respective subchannels of at least a portion of a first bandwidth associated with the first AP based on the PPDU including the information associated with the coordination of resources for the CAP procedure. The first AP may communicate with the one or more second APs based on the information associated with the coordination and included in the PPDU.

Inventors

Abhishek Pramod PATIL
Sai Yiu Duncan Ho
Sameer Vermani
Jialing Li Chen
Sanket Sanjay Kalamkar
Youhan Kim
Naveen Kumar Kakani
Alfred Asterjadhi
Gaurang NAIK
George Cherian
Giovanni Chisci
Sherief HELWA

Assignees

QUALCOMM INCORPORATED

Dates

Publication Date: 20260507
Application Date: 20241104

Claims (20)

1 . A first access point, comprising: a processing system that includes processor circuitry and memory circuitry that stores code, the processing system configured to cause the first access point to: transmit, to one or more second access points, a physical protocol data unit (PPDU) comprising information associated with coordination of resources for a coordinated access point procedure, wherein at least a portion of the PPDU is duplicated and transmitted via respective subchannels of at least a portion of a first bandwidth associated with the first access point based at least in part on the PPDU comprising the information associated with the coordination of resources for the coordinated access point procedure; and communicate with the one or more second access points based at least in part on the information associated with the coordination and included in the PPDU.
2 . The first access point of claim 1 , wherein, to transmit the PPDU, the processing system is configured to cause the first access point to: transmit duplicate versions of an entirety of the PPDU via the respective subchannels of at least the portion of the first bandwidth associated with the first access point based at least in part on the PPDU being a control frame associated with the coordination of the resources for the coordinated access point procedure.
3 . The first access point of claim 2 , wherein the control frame comprises an initial control frame associated with the coordination of the resources and wherein to transmit the PPDU, the processing system is configured to cause the first access point to: transmit the PPDU via the respective subchannels of an entirety of the first bandwidth associated with the first access point based at least in part on the PPDU being the initial control frame and being addressed to one or more stations serviced by the first access point.
4 . The first access point of claim 2 , wherein, to transmit the PPDU, the processing system is configured to cause the first access point to: transmit the PPDU via the respective subchannels of the portion of the first bandwidth that overlaps with a second bandwidth of a second access point of the one or more second access points based at least in part on the PPDU being addressed to the second access point.
5 . The first access point of claim 2 , wherein, to transmit the PPDU, the processing system is configured to cause the first access point to: transmit the PPDU that comprises one or more resource unit allocations for one or more receiving devices, wherein the one or more resource unit allocations are configured with reference to a primary channel of the first access point.
6 . The first access point of claim 2 , wherein the control frame comprises a resource allocation frame associated with the coordination of the resources and wherein to transmit the PPDU, the processing system is configured to cause the first access point to: transmit the PPDU via the respective subchannels of the portion of the first bandwidth that overlaps with a second bandwidth of a second access point of the one or more second access points or via the respective subchannels of the portion that is less than an overlapping portion between the first bandwidth and the second bandwidth based at least in part on the control frame comprising the resource allocation frame.
7 . The first access point of claim 2 , wherein the processing system is further configured to cause the first access point to: receive, from a second access point of the one or more second access points, a resource allocation frame including first information associated with the coordination of the resources, and wherein to transmit the PPDU, the processing system is further configured to cause the first access point to: transmit, based at least in part on receiving the resource allocation frame, the PPDU as a response to the resource allocation frame and via the respective subchannels of the portion occupying a second bandwidth allocated via the resource allocation frame or the portion of the second bandwidth allocated via the resource allocation frame that is available for use by the first access point, the response comprising the information that is second information associated with the coordination of the resources.
8 . The first access point of claim 2 , wherein the control frame comprises a resource return frame, and wherein to transmit the PPDU, the processing system is configured to cause the first access point to: transmit the PPDU via the respective subchannels of the portion of bandwidth used during a transmission opportunity and returned via the resource return frame.
9 . The first access point of claim 2 , wherein, to transmit the PPDU, the processing system is configured to cause the first access point to: transmit the PPDU that comprises a duration field and one or more address fields that are indicative of whether one or more receiving devices are to configure an intra-basic service set network allocation vector (NAV) associated with a value of the duration field for the coordinated access point procedure.
10 . The first access point of claim 1 , wherein, to transmit the PPDU, the processing system is configured to cause the first access point to: transmit duplicate versions of the portion of the PPDU via the respective subchannels of at least the portion of the first bandwidth associated with the first access point based at least in part on the PPDU being a management frame associated with the coordination of the resources for the coordinated access point procedure; and transmit a header of the PPDU via an entirety of the first bandwidth associated with the first access point based at least in part on the PPDU being the management frame associated with the coordination of the resources for the coordinated access point procedure.
11 . The first access point of claim 10 , wherein the duplicate versions of the portion comprise duplicate versions of a preamble of the PPDU.
12 . The first access point of claim 11 , wherein the duplicate versions of the preamble comprise an uplink/downlink bit that is set to a value of one to indicate that the PPDU is addressed to the one or more second access points.
13 . The first access point of claim 11 , wherein the duplicate versions of the preamble comprise a basic service set color field that comprises a comprises a value of zero that indicates that the PPDU is transmitted by the first access point that is unassociated with a receiving device, a value that indicates a coordinated access point procedure type of the coordinated access point procedure, or a value indicative of a plurality of coordinated access point procedure types.
14 . The first access point of claim 11 , wherein the duplicate versions of the preamble comprise an indication of a type of the PPDU, an indication compression mode for the PPDU, or both.
15 . The first access point of claim 11 , wherein the duplicate versions of the preamble comprise an indication of a station identifier with a value of a first identifier of the first access point assigned by a second access point of the one or more second access points, or a first value indicative of a coordinated access point procedure type of the coordinated access point procedure, or a second value indicative of a plurality of coordinated access point procedure types.
16 . The first access point of claim 10 , wherein the header of the PPDU transmitted via the entirety of the first bandwidth comprises a frame type identifier or frame subtype identifier indicative of a coordination access procedure access frame, a first field indicative of a first address of the first access point, a second field indicative of a second address of a second access point of the one or more second access points, or a combination thereof.
17 . The first access point of claim 1 , wherein the processing system is further configured to cause the first access point to: receive, from a second access point of the one or more second access points, a first PPDU within the portion of the first bandwidth that overlaps with a second bandwidth of the second access point, wherein transmitting the PPDU as a second PPDU comprises: transmit the second PPDU comprising feedback associated with the first PPDU via the portion of the first bandwidth.
18 . The first access point of claim 1 , wherein the processing system is further configured to cause the first access point to: receive, from a second access point of the one or more second access points, a first PPDU that includes an allocation of a resource for transmission of feedback associated with the first PPDU, wherein to transmit the PPDU as a second PPDU, the processing system is further configured to cause the first access point to: transmit the second PPDU comprising the feedback associated with the first PPDU via the allocated resource.
19 . A method for wireless communication at a first access point, comprising: transmitting, to one or more second access points, a physical protocol data unit (PPDU) comprising information associated with coordination of resources for a coordinated access point procedure, wherein at least a portion of the PPDU is duplicated and transmitted via respective subchannels of at least a portion of a first bandwidth associated with the first access point based at least in part on the PPDU comprising the information associated with the coordination of resources for the coordinated access point procedure; and communicating with the one or more second access points based at least in part on the information associated with the coordination and included in the PPDU.
20 . A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by one or more processors to: transmit, to one or more second access points, a physical protocol data unit (PPDU) comprising information associated with coordination of resources for a coordinated access point procedure, wherein at least a portion of the PPDU is duplicated and transmitted via respective subchannels of at least a portion of a first bandwidth associated with a first access point based at least in part on the PPDU comprising the information associated with the coordination of resources for the coordinated access point procedure; and communicate with the one or more second access points based at least in part on the information associated with the coordination and included in the PPDU.

Description

TECHNICAL FIELD This disclosure relates generally to wireless communication and, more specifically, to communications between access points with different channel configurations. DESCRIPTION OF THE RELATED TECHNOLOGY Wireless communication networks may include various types of wireless communication devices including network entities (such as wireless access points (AP) or base stations (BS)), client devices (such as wireless stations (STAs) or user equipment (UEs)), and other wireless nodes. These wireless communication devices may communicate with one another via a variety of technologies and wireless communication protocols, including wireless local area network (WLAN) or Wi-Fi-based protocols or cellular (such as 4G, 5G, or 6G)-based protocols. The wireless communication networks may be capable of supporting communication with multiple users by sharing the available system resources (such as time, frequency, and spatial resources). To enable features or provide improved performance, the wireless communication devices may employ technologies such as orthogonal frequency divisional multiple access (OFDMA), multi-user Multiple-Input Multiple-Output (MU-MIMO), spatial multiplexing, and beamforming. For greater inter-operability, the wireless communication networks may support backwards compatibility (such as supporting legacy wireless communication devices) as well as forward compatibility (such as supporting communication with wireless communication devices compatible with next-generation wireless communication standards). SUMMARY The systems, methods, and devices of this disclosure each have several innovative aspects, no single one of which is solely responsible for the desirable attributes disclosed herein. One innovative aspect of the subject matter described in this disclosure can be implemented in a method for wireless communications by a first access point (AP). The method may include transmitting, to one or more second APs, a physical protocol data unit (PPDU) including information associated with coordination of resources for a coordinated AP (CAP) procedure, where at least a portion of the PPDU is duplicated and transmitted via respective subchannels of at least a portion of a first bandwidth associated with the first AP based on the PPDU including the information associated with the coordination of resources for the CAP procedure and communicating with the one or more second APs based on the information associated with the coordination and included in the PPDU. A first AP is described. The first AP may include a processing system that includes processor circuitry and memory circuitry that stores code. The processing system may be configured to cause the first AP to transmit, to one or more second APs, a PPDU including information associated with coordination of resources for a CAP procedure, where at least a portion of the PPDU is duplicated and transmitted via respective subchannels of at least a portion of a first bandwidth associated with the first AP based on the PPDU including the information associated with the coordination of resources for the CAP procedure and communicate with the one or more second APs based on the information associated with the coordination and included in the PPDU. Another first AP is described. The first AP may include means for transmitting, to one or more second APs, a PPDU including information associated with coordination of resources for a CAP procedure, where at least a portion of the PPDU is duplicated and transmitted via respective subchannels of at least a portion of a first bandwidth associated with the first AP based on the PPDU including the information associated with the coordination of resources for the CAP procedure and means for communicating with the one or more second APs based on the information associated with the coordination and included in the PPDU. A non-transitory computer-readable medium storing code is described. The code may include instructions executable by one or more processors to transmit, to one or more second APs, a PPDU including information associated with coordination of resources for a CAP procedure, where at least a portion of the PPDU is duplicated and transmitted via respective subchannels of at least a portion of a first bandwidth associated with the first AP based on the PPDU including the information associated with the coordination of resources for the CAP procedure and communicate with the one or more second APs based on the information associated with the coordination and included in the PPDU. In some examples of the method, first APs, and non-transitory computer-readable medium described herein, transmitting the PPDU may include operations, features, means, or instructions for transmitting duplicate versions of an entirety of the PPDU via the respective subchannels of at least the portion of the first bandwidth associated with the first AP based on the PPDU being a control frame associated with the coordination of th