WLAN Sensing Trigger Frames for Coordinated Measurement Feedback
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Solution Overview
Problem
Current WLAN sensing technologies lack mechanisms to define a trigger frame for efficient communication between transmitters and receivers, leading to resource wastage and inefficiencies in WLAN sensing measurements.
Innovation Solution
A communication method and apparatus that involve determining and sending a trigger frame containing information about the receiver's sensing measurement events, including identifiers and required radio units, to facilitate timely and interference-reduced feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If WLAN sensing measurements are performed without a defined trigger frame mechanism, then sensing measurements can be conducted, but communication resources are wasted and feedback efficiency is reduced
Solution Approach 1:
The trigger frame is sent in advance to notify receivers about upcoming sensing measurement events and required feedback actions. This preliminary notification allows receivers to prepare and feedback results efficiently within defined time windows, avoiding resource wastage from unsynchronized communications
Solution Approach 2:
The patent implements a structured feedback mechanism where receivers send sensing measurement results back to transmitters in response to trigger frames. The feedback includes specific information elements that enable efficient resource allocation and interference management across the WLAN network
2Reliability
If multiple receivers feedback sensing measurement results simultaneously without coordination, then all receivers can provide data, but interference increases and feedback reliability decreases
Solution Approach 1:
The trigger frame dynamically assigns different feedback time windows to different receivers based on their identifiers and measurement event types. This dynamic time-division multiplexing allows multiple receivers to feedback results without simultaneous transmission, eliminating interference while maintaining high reliability
Solution Approach 2:
The feedback process is segmented into distinct time windows for different receivers and measurement events. Each receiver is assigned a specific feedback opportunity within the trigger frame structure, preventing signal collisions and ensuring reliable reception of feedback data
3Productivity
If trigger frames include detailed information about each receiver's sensing measurement events, then resource allocation is optimized, but frame complexity increases
Solution Approach 1:
The trigger frame uses a universal structure with information elements that can accommodate multiple receiver types and sensing measurement event kinds. The same frame format handles different scenarios (location discovery, proximity detection, presence detection) without requiring separate frame designs, managing complexity while maintaining versatility
Solution Approach 2:
The trigger frame structure allows dynamic parameter configuration based on the specific sensing measurement events and receiver capabilities. Information elements can be selectively included or excluded, and parameters like feedback time windows and radio unit assignments are adjusted according to network conditions and device requirements
Data Source
AI summary
The present disclosure provides communication methods and communication apparatuses. The communication method includes: determining a trigger frame, where the trigger frame includes information indicating a receiver of a wireless local area network (WLAN) sensing measurement feeding back a result of at least one sensing measurement event; and sending the trigger frame.