WLAN Sensing Resource Allocation for Multi-STA Accuracy
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Solution Overview
Problem
Current WLAN sensing technologies face limitations in accuracy and resolution when performing sensing between multiple STAs and an AP, particularly in efficiently utilizing multiple channels or resources across various frequency bands.
Innovation Solution
A method is proposed where the AP allocates sensing units, which are resource units performing sensing operations, to multiple STAs, enabling resource-efficient WLAN sensing across multiple channels or resources, and supporting signal transmission and reception for enhanced accuracy and resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If WLAN sensing is performed using single channel or limited resources, then device complexity is reduced, but measurement precision and sensing accuracy deteriorate
Solution Approach 1:
The patent segments the available frequency resources into multiple sensing units (subchannels or resource units) that can be independently allocated to different STAs. This segmentation allows the system to perform parallel sensing operations across multiple frequency resources, thereby improving measurement precision without requiring each individual STA to process the entire frequency spectrum, thus managing device complexity through structured division of resources.
Solution Approach 2:
The patent introduces a multi-dimensional resource allocation framework by combining frequency domain segmentation (multiple subchannels) with time domain scheduling (different sensing opportunities for different STAs). This multi-dimensional approach enables the system to achieve high sensing accuracy through aggregated measurements from multiple dimensions while distributing the computational complexity across different time-frequency resources rather than concentrating it in a single dimension.
2Measurement precision
If multiple channels or resources are used for WLAN sensing, then sensing accuracy and resolution are improved, but resource efficiency and system overhead worsen
Solution Approach 1:
The patent applies local quality by allocating different sensing units (subchannels or resource units) to different STAs based on their specific sensing requirements, capabilities, and channel conditions. Each STA receives a tailored allocation of frequency resources optimized for its local sensing needs, rather than uniformly distributing all resources to all STAs. This approach improves sensing resolution for each STA while optimizing overall resource efficiency by avoiding redundant allocations.
Solution Approach 2:
The patent implements partial action by allocating only the necessary portion of frequency resources to each STA based on its specific sensing requirements, rather than providing all available resources to every STA. The AP controls the allocation to ensure that the total resource usage remains within efficient limits while still providing sufficient resources to achieve the required sensing resolution for each participating STA.
3Productivity
If resource allocation for multi-STA sensing is implemented, then sensing performance is improved, but control signaling overhead and system complexity increase
Solution Approach 1:
The patent implements universality by designing a flexible resource allocation framework where the same sensing units (subchannels or resource units) can be dynamically allocated to different STAs for different sensing operations. The AP uses universal resource allocation signaling that can accommodate multiple STAs and various sensing scenarios without requiring separate dedicated signaling mechanisms for each case. This multi-functional approach improves sensing throughput while minimizing signaling overhead by reusing the same signaling structures across different allocation scenarios.
Data Source
AI summary
The present specification proposes various technical characteristics that may be applied to a Wireless Local Area Network (WLAN) sensing. For example, the present specification proposes a procedure for WLAN sensing using multiple channels or multiple resources. The same or different channels and/or resources may be allocated to at least one wireless device performing the WLAN sensing. The at least one wireless device may perform measurement and signal transmission/reception processes that are included in the WLAN sensing by using the channel(s) and/or resource(s).