Enhanced Client Discovery for Targeted WLAN Link Sensing

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Solution Overview

Problem

Existing wireless local area network (WLAN) technologies face challenges in efficiently discovering and obtaining information about potential links between non-access-point stations (non-AP STAs) due to limited knowledge of these links by the sensing initiator, leading to unnecessary overhead in sensing measurements.

Innovation Solution

A communication apparatus and method that enables non-AP STAs to request and receive information about potential links from access points (APs) through enhanced client discovery procedures, including frame exchanges and authorization validation, allowing for targeted sensing measurements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If all possible links are measured and reported in the SBP reporting phase, then complete sensing information is obtained, but significant overhead is generated in the Wi-Fi link used for reporting

Engineering Contradiction:

Improvesensing information completenessVSAvoidWi-Fi link overhead

Core Design Contradiction:

Loss of informationVSLoss of energy

Solution Approach 1:

The patent performs client discovery and identifies potential links before the SBP reporting phase. By preliminarily determining which links are worth measuring, the system avoids the need to report on all possible links, thus reducing overhead while maintaining sensing information completeness.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Instead of measuring and reporting all possible links (excessive action), the patent selectively measures and reports only on potential links identified through client discovery (partial action). This partial approach suffices for the sensing application while significantly reducing reporting overhead.

Inventive Principle:

Principle #16Partial or excessive action

2Ease of operation

If the SBP initiator has limited knowledge of potential links, then the system operates with simpler assumptions, but the initiator cannot make proper requests for SBP procedure

Engineering Contradiction:

ImproveSBP request accuracyVSAvoidknowledge of potential links

Core Design Contradiction:

Ease of operationVSLoss of information

Solution Approach 1:

The patent introduces an intermediary client discovery procedure between the SBP initiator and the link measurement phase. This intermediary step provides the initiator with necessary knowledge about potential links through AP-assisted discovery, enabling accurate SBP requests without requiring the initiator to have prior knowledge.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The client discovery procedure is performed preliminarily before the SBP procedure. This preliminary action equips the SBP initiator with knowledge of potential links, enabling it to make informed and accurate SBP procedure requests.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20250275003A1Communication apparatus and communication method for enhanced client discovery

Publication Date: 2025.08.28 PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA

AI summary

The present disclosure provides a communication apparatus and a communication method for enhanced client discovery, the communication apparatus comprising: circuitry, which, in operation, is configured to generates a first frame; a transmitter, which, in operation, transmits the first frame to a second communication apparatus to request for information of a third communication apparatus.