WLAN Sensing Setup Frames for Multi-Band Sounding Coordination
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Solution Overview
Problem
Existing WLAN sensing technologies face challenges in managing communication and coordination across multiple frequency bands, particularly in scenarios requiring low-latency transmission and location discovery in dense environments, with a need for improved media access control mechanisms and efficient sounding methods.
Innovation Solution
A WLAN sensing measurement method and apparatus that includes determining and sending a sensing measurement setup request frame with first indication information to specify the sounding type and processing order, utilizing trigger frame sounding (TF Sounding) and/or null data packet announcement sounding (NDPA Sounding) to manage sensing measurement instances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple frequency bands are aggregated and coordinated for WLAN communication, then transmission rate and throughput are improved, but device complexity and media access control mechanism complexity increase
Solution Approach 1:
The patent segments the sensing measurement process into distinct phases (setup phase with indication information, sounding phase with trigger frames, reporting phase) and separates different frequency band operations. By dividing the complex multi-band sensing into manageable segments with clear boundaries, the system achieves high transmission rates while reducing MAC mechanism complexity through structured organization.
Solution Approach 2:
The patent implements dynamic frequency band selection and aggregation where devices can adaptively choose which frequency bands to use for sensing measurements based on current network conditions. The MAC mechanism dynamically adjusts sensing parameters, trigger frame timing, and resource allocation across frequency bands, enabling high throughput while maintaining manageable complexity through flexibility.
2Loss of time
If low-latency transmission is supported in multi-band aggregation, then real-time performance is improved, but coordination complexity and processing overhead increase
Solution Approach 1:
The patent uses preliminary action by including sounding type indication information in advance during the setup phase. The access point pre-configures sensing parameters, trigger frame structures, and resource allocations before actual sensing measurements begin. This preliminary configuration reduces real-time coordination complexity and enables low-latency transmission by eliminating setup delays during active sensing operations.
3Measurement precision
If WLAN sensing technology is implemented for location discovery in dense environments, then positioning accuracy is improved, but signal interference and measurement difficulty increase
Solution Approach 1:
The patent transitions from single-frequency-band sensing to multi-dimensional sensing across multiple frequency bands. By adding the frequency band dimension to sensing measurements, the system can perform location discovery in dense environments where single-band sensing fails due to interference. Different frequency bands provide complementary spatial and spectral information, improving positioning accuracy while the structured multi-band framework manages measurement complexity.
Data Source
AI summary
A WLAN sensing measurement method is applied to a sensing initiator. The method includes: determining a sensing measurement setup request frame; wherein the sensing measurement setup request frame includes first indication information, the first indication information includes at least one of a sounding type or a processing order of a sensing measurement instance, and the sounding type includes at least one of a trigger frame sounding (TF Sounding) or a null data packet announcement sounding (NDPA Sounding); and sending the sensing measurement setup request frame during a sensing measurement setup procedure.