Relay STA Detection Control for WLAN Coverage Extension
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Solution Overview
Problem
Existing wireless LAN systems face challenges in efficiently detecting non-AP STAs for reliable relay operations, particularly in next-generation standards like IEEE 802.11be and IEEE 802.11bn, which require enhanced throughput and reliability, and extending coverage to IoT devices and outdoor environments.
Innovation Solution
A method involving a detection request frame transmitted from an Access Point (AP) STA to a relay STA, with the relay STA performing a detection procedure based on Physical Protocol Data Units (PPDUs) and reporting detection results to the AP, enabling accurate detection and control of non-AP STAs and link quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If relay operations are performed to extend coverage, then coverage range is improved, but detection of non-AP STAs becomes more difficult
Solution Approach 1:
The patent introduces an AP STA as an intermediary that assists the relay STA in detecting non-AP STAs. The AP STA transmits detection request frames to the relay STA, which then uses these requests to efficiently detect non-AP STAs in its coverage area. This intermediary approach allows the relay STA to extend coverage while maintaining effective detection capabilities through coordinated assistance from the AP.
2Productivity
If detection request frames are transmitted from AP to relay STA, then detection efficiency is improved, but communication overhead increases
Solution Approach 1:
The patent implements preliminary action by having the AP STA transmit detection request frames to the relay STA before the relay STA performs detection. This pre-provisioning of detection requests enables the relay STA to efficiently detect non-AP STAs without having to initiate complex detection procedures independently, thereby improving detection efficiency while managing communication overhead through centralized request management.
Data Source
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AI summary
For example, a technical feature of the present disclosure may be related to a method performed in a wireless local area network (WLAN) system. For example, a method of the present disclosure may comprise a step of transmitting a detection request frame by an access point (AP) station (STA) to a relay STA. The detection request frame comprises control information for a non-AP STA detection procedure performed by the relay STA, and the non-AP STA detection procedure may be performed on the basis of a physical protocol data unit (PPDU) transmitted from at least one non-AP STA to the AP STA. In addition, in the method of the present disclosure, the AP STA may receive, from the relay STA, report information of the non-AP STA detection procedure performed by the relay STA. In this case, the report information may comprise information on at least one non-AP obtained by the relay STA.