Devices and methods for reliable BSS transition in a wireless network

Enhanced UPR frames in IEEE 802.11 WLAN networks enable efficient and reliable BSS transitions by providing channel information to non-AP stations, addressing inefficiencies and power consumption in existing scanning methods.

WO2025214611A1 Publication Date: 2025-10-16HUAWEI TECH CO LTD +1
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Patent Information

Application Number
PCT/EP2024/060009
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-04-12
Publication Date
2025-10-16

AI Technical Summary

Technical Problem

In IEEE 802.11 WLAN networks, the process of BSS transition (handover or roaming) is inefficient and power-consuming due to the need for non-AP stations to scan for candidate APs, leading to congestion and instability, especially in densely deployed networks with coverage discontinuities.

Method used

Implementing Enhanced Unsolicited Probe Response (UPR) frames by APs to provide channel information to non-AP stations, allowing them to associate directly with suitable candidate APs without scanning, thereby reducing power consumption and network congestion.

Benefits of technology

Enhances the reliability and efficiency of BSS transitions by minimizing scanning time and energy consumption, maintaining network stability, and reducing frame transmission errors.

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Abstract

An access point, AP, (110) is disclosed for communication with one or more non-AP stations (110a-c) associated with the AP (110) via a first channel (118) in a Wi-Fi network (100). The AP (110) is configured to transmit one or more Enhanced Unsolicited Probe Response, Enhanced UPR, frames (140a-n) to one or more further non-AP stations (120a-c) associated with a further AP (120) via a second channel (128), wherein the further AP (120) communicates with the one or more further non-AP stations (120a-c) associated with the further AP (120) via the second channel (128) and wherein each Enhanced UPR frame (140a-n) comprises an indication of the first channel (118).
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