WLAN Beacon Signal Object Sensing via Channel Segmentation

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Solution Overview

Problem

There is a lack of specific specifications for performing object sensing in wireless local area networks (WLANs), which hinders effective object detection and estimation in these environments.

Innovation Solution

A communication apparatus and method that receive a beacon signal through a first channel, generate a sensing signal based on extended information from the beacon signal, and transmit this sensing signal through a second channel, enabling object sensing by configuring the information for sensing in the beacon signal and using separate channels for reception and transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If object sensing is performed in WLAN without specific specifications, then sensing functionality can be added, but measurement precision and reliability of object detection are insufficient

Engineering Contradiction:

Improvesensing functionalityVSAvoidobject detection accuracy

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent changes the parameters of the sensing signal by deriving it from the beacon signal's extended area information, specifically using the same bandwidth and temporal characteristics. This parameter alignment ensures that the sensing signal maintains compatibility with WLAN infrastructure while achieving reliable object detection precision.

Inventive Principle:

Principle #35Parameter changes

2Device complexity

If beacon signal and sensing signal use the same channel, then device complexity is reduced, but interference between communication and sensing degrades measurement precision

Engineering Contradiction:

Improvechannel configurationVSAvoidobject sensing accuracy

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The patent segments the channel usage by assigning the beacon signal to a first channel and the sensing signal to a second channel. This segmentation separates communication functions from sensing functions, eliminating mutual interference while maintaining manageable device complexity through structured channel allocation.

Inventive Principle:

Principle #1Segmentation

3Productivity

If sensing signal is generated without extended area information from beacon, then processing speed increases, but loss of information reduces sensing reliability

Engineering Contradiction:

Improvesignal generation speedVSAvoidsensing signal quality

Core Design Contradiction:

ProductivityVSLoss of information

Solution Approach 1:

The patent applies preliminary action by incorporating the extended area information from the beacon signal into the sensing signal generation process. This pre-processing step ensures that all necessary information is embedded in the sensing signal before transmission, eliminating the need for additional information exchange and maintaining high sensing reliability without delaying the process.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20220377792A1Communication device and communication method

Publication Date: 2022.11.24 PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA

AI summary

This communication device has: a reception unit that receives a beacon signal through a first channel; a control unit that generates a sensing signal on the basis of information included in an extended area of the beacon signal; and a transmission unit that transmits the sensing signal through a second channel.