Channel contention-based communication method and apparatus

The proposed channel contention-based communication method using MU-RTS frames and ignoring NAVs enables simultaneous multi-user transmissions in WLANs, addressing inefficiencies in existing systems and enhancing communication efficiency.

JP7881055B2Active Publication Date: 2026-06-26HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
HUAWEI TECH CO LTD
Filing Date
2023-07-31
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

The existing channel contention mechanisms in wireless local area networks (WLANs) result in low system efficiency due to inefficient channel access and collision handling, particularly in scenarios involving multiple stations sharing a transmission opportunity (TXOP).

Method used

Implementing a channel contention-based communication method that utilizes multi-user request to send (MU-RTS) frames to allocate transmission periods and ignore network allocation vectors (NAV) configured by access points, allowing stations to perform point-to-point (P2P) transmissions within these periods, thereby enabling simultaneous multi-user transmissions and spatial reuse.

Benefits of technology

This approach enhances system efficiency by allowing multiple stations to perform simultaneous transmissions, effectively utilizing resources and reducing interference, thus improving overall communication performance.

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Abstract

A channel contention-based communication method and apparatus are provided for use in wireless local area network systems supporting IEEE 802.11ax next-generation Wi-Fi protocols such as 802.11be, Wi-Fi 7, or EHT, or 802.11 series protocols such as the next-generation standard of 802.11be, Wi-Fi 8, and UHR, and can further be used in UWB-based wireless personal area network systems and sensing systems. The method includes: an AP transmits an MU-RTS frame; a STA receives the MU-RTS frame and performs UL transmission or P2P transmission within a first period based on the MU-RTS frame; the MU-RTS frame may include at least two user information fields or may not include a user information field; one user information field may correspond to one or more stations; and an embodiment of the present application can ensure multi-user concurrency as much as possible, thereby improving system efficiency.
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