Wireless Sensing Session Retention for Flexible Measurement Re-Setup
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Solution Overview
Problem
Conventional wireless sensing technologies lack a mechanism for terminating sensing measurement setups between access points (APs) and unassociated stations (U-STAs) while retaining the sensing session, leading to inefficiencies and overheads.
Innovation Solution
Implement a method where an AP sends a sensing measurement setup termination frame to a U-STA, including indication information to initiate a new setup within the retained session, and manage timers (T2 and T3) to ensure flexible and efficient sensing measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a sensing measurement setup termination mechanism is implemented between AP and U-STA, then sensing session retention and flexible re-setup capability are improved, but device complexity and protocol overhead increase
Solution Approach 1:
The patent segments the sensing procedure into distinct phases (sensing session setup, sensing measurement setup, sensing measurement instance, sensing measurement setup termination, and sensing session termination). By introducing a specific termination phase that separates session management from measurement management, the protocol enables flexible re-setup capability while maintaining clear procedural boundaries, thus improving adaptability without excessive complexity
Solution Approach 2:
The patent implements preliminary actions by requiring the AP to send a sensing measurement setup termination frame before allowing re-setup, and by establishing timer mechanisms (T2 and T3) in advance. These preliminary actions ensure that session retention is properly managed before new measurements begin, preventing conflicts while enabling flexible re-initialization
2Productivity
If timer management mechanisms (T2 and T3) are implemented, then sensing measurement efficiency is improved, but device complexity increases
Solution Approach 1:
The patent implements feedback mechanisms through timer T2 and T3 that continuously monitor sensing session status and measurement setup states. These timers provide feedback to both AP and U-STA about session validity and measurement readiness, enabling efficient automatic re-setup when conditions are met without requiring constant manual intervention, thus improving productivity
Solution Approach 2:
The timer management mechanism enables self-service operation where the AP and U-STA automatically manage their own sensing session states through local timer expiration events. When T2 or T3 expires, devices automatically initiate appropriate actions (re-setup or termination) without requiring external control, reducing operational complexity while maintaining high efficiency
Data Source
AI summary
Embodiments of this application relate to a wireless sensing method and an apparatus, and are applied to a sensing system, for example, an 802.11bf protocol or a next-generation sensing protocol of the 802.11bf protocol. The method includes: An AP sends a sensing measurement setup termination frame, to terminate a sensing MS but retain a sensing session. The sensing measurement setup termination frame includes indication information, to notify a U-STA to send a sensing measurement setup query frame before first time. The AP receives the sensing measurement setup query frame. According to this method, the AP can initiate a new sensing measurement setup with the U-STA in a condition of retaining the sensing session, to facilitate subsequent sensing measurement. This application is further applied to a UWB-based WPAN system or the like, and may be further applied to a WLAN system of an 802.11 series protocol.