Unified transmission sequence for coordinated beamforming and coordinated spatial reuse

A unified frame transmission sequence for coordinated beamforming and spatial reuse simplifies frame exchange across multiple access points, addressing complexity and interference issues in wireless networks, thereby improving network performance and efficiency.

WO2026151556A1 Publication Date: 2026-07-16QUALCOMM INC
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Patent Information

Application Number
PCT/US2025/059062
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2025-02-04
Filing Date
2025-12-10
Publication Date
2026-07-16

AI Technical Summary

Technical Problem

Existing wireless communication networks face challenges in efficiently coordinating beamforming and spatial reuse across multiple access points, leading to increased complexity and interference, particularly when supporting different coordinated AP schemes.

Method used

Implementing a unified frame transmission sequence that coordinates downlink physical layer protocol data unit (PPDU) transmissions among multiple access points, using invite frames to initiate joint frame transmission sequences for coordinated beamforming (CoBF) and coordinated spatial reuse (CSR) operations, simplifying the frame exchange process and reducing the need for multiple distinct sequences.

Benefits of technology

The unified frame transmission sequence reduces hardware complexity and improves network performance by enabling efficient coordination between access points, enhancing spectral efficiency and capacity.

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Abstract

This disclosure provides methods, devices, and systems for a unified frame transmission sequence for coordinated beamforming and coordinated spatial reuse. Some aspects more specifically relate to a first access point (AP) that transmits an invite frame within a shared transmission opportunity of the first AP. The invite frame may indicate initiation of a frame transmission sequence associated with a coordinated AP scheme of a plurality of coordinated AP schemes. The first AP and the second AP may communicate one or more frames within the shared transmission opportunity in accordance with the frame transmission sequence. The one or more frames may include information that coordinates downlink physical layer protocol data unit (PPDU) transmissions between the first AP and one or more second APs. In response to communicating the one or more frames, the first AP, a second AP, or both may transmit a coordinated downlink PPDU transmission.
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