Multi-ap coordinated transmission schemes in wireless communications

EP4758880A1Pending Publication Date: 2026-06-17MEDIATEK INC
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
MEDIATEK INC
Filing Date
2025-07-09
Publication Date
2026-06-17

AI Technical Summary

Technical Problem

There is a need for a unified medium access control (MAC) protocol structure to facilitate multi-AP coordinated transmission schemes in wireless communications, such as coordinated beamforming (CBF) and coordinated spatial reuse (CSR), as existing technologies lack a defined mechanism for a sharing AP to initiate these transmissions.

Method used

A method involving a first AP performing a coordinated TXOP frame exchange with a second AP, including coordinated multi-AP transmission, where the first AP polls or invites the second AP to participate in coordinated frame exchanges, and both APs exchange information on candidate STAs and resource allocation, followed by synchronization to align transmission parameters.

Benefits of technology

This approach allows efficient coordination between multiple APs, enabling synchronized data transmission and resource utilization, thereby enhancing network performance and reducing timing errors in multi-AP environments.

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Abstract

Techniques pertaining to multi-access point (multi-AP) coordinated transmission schemes in wireless communications are described. An apparatus, as a first AP performs a coordinated transmission opportunity (TXOP) frame exchange with a second AP. The apparatus then performs a coordinated multi-AP transmission with the second AP following the coordinated TXOP frame exchange. The coordinated multi-AP transmission involves transmitting a coordinated beamformed (CBF) or coordinated spatial-reuse (CSR) physical-protocol data unit (PPDU) in synchronization with a transmission of another CBF or CSR PPDU by the second AP.
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