WLAN Sensing AP Proxy for One-to-Many STA Coordination

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Solution Overview

Problem

Current WLAN sensing technologies face issues of wasted spectrum resources and increased time delay due to STAs serving as sensing initiators, which cannot perform one-to-many communication and result in inefficient resource utilization and higher latency.

Innovation Solution

The proposed solution involves a WLAN sensing method and apparatus where an AP acts as a proxy for the initiator, receiving a sensing session establishment initiation message frame and establishing WLAN sensing measurements with multiple STAs, thereby enabling one-to-many communication and optimizing resource utilization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If STAs serve as sensing initiators, then sensing measurement can be established, but spectrum resources are wasted and time delay increases

Engineering Contradiction:

Improvesensing measurement capabilityVSAvoidspectrum resource waste

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The AP serves as an intermediary between the initiator STA and responder STAs. The initiator STA sends sensing measurement requests to the AP, which then coordinates with multiple responder STAs to perform sensing measurements. This mediator approach allows one-to-many communication while reducing spectrum resource waste compared to direct STA-to-STA communication.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If STAs serve as sensing initiators, then sensing measurement can be established, but time delay increases

Engineering Contradiction:

Improvesensing measurement capabilityVSAvoidtime delay

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The AP acts as a centralized coordinator that receives sensing requests from initiators and manages communications with multiple responders simultaneously. This centralized mediation reduces the number of direct communication rounds required between STAs, thereby decreasing overall time delay for establishing sensing measurements.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The AP pre-establishes sensing measurement configurations and maintains ready-state connections with multiple responder STAs. When a sensing request arrives, the AP can quickly activate pre-configured measurement parameters and coordinate pre-synchronized responders, reducing the time required to establish sensing measurements compared to ad-hoc STA-to-STA setup.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If STAs serve as sensing initiators, then one-to-one communication is established, but resource utilization efficiency decreases

Engineering Contradiction:

Improvesensing measurement capabilityVSAvoidresource utilization efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The AP provides universal sensing coordination services to multiple initiator and responder STAs simultaneously. A single AP can handle sensing requests from multiple initiators and coordinate measurements with multiple responders, enabling one-to-many communication patterns. This multi-functionality significantly improves resource utilization efficiency compared to one-to-one STA-to-STA sensing establishment.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250031079A1WLAN sensing method and apparatus, electronic device, and storage medium

Publication Date: 2025.01.23 BEIJING XIAOMI MOBILE SOFTWARE CO LTD

AI summary

A Wireless Local Area Network (WLAN) sensing method is applied to an access point (AP) and includes: receiving a sensing session establishment initiating message frame sent by an initiator device; and in response to the sensing session establishment initiating message frame, establishing WLAN sensing measurement with a first station (STA).