Wireless Path Selection via Direct and Indirect Quality Comparison

Solution Overview

Problem

Existing wireless communication systems fail to appropriately select between direct and indirect communication paths due to inconsistencies in communication quality, often choosing indirect paths when the base station's transmission power is higher, leading to lower communication quality compared to direct paths when the first and second wireless communication apparatuses have lower transmission power.

Innovation Solution

A wireless communication apparatus with a path selecting part that uses communication quality measurement request signals to acquire and compare the quality of direct and indirect communication paths, selecting the path with higher throughput based on pre-stored quality-throughput tables for direct and indirect communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If indirect communication via access point is used, then connection to wired LAN and Internet is enabled, but throughput decreases compared to direct communication

Engineering Contradiction:

Improveconnection capabilityVSAvoidthroughput

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The system dynamically switches between direct and indirect communication modes based on real-time communication quality measurements. The wireless communication apparatus evaluates whether direct communication or indirect communication via access point provides better communication quality and selects accordingly, making the communication path dynamic rather than fixed.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the communication mode parameter based on measured communication qualities. By comparing communication quality parameters of direct and indirect paths, the system determines which mode to use, effectively changing the communication parameter to optimize performance.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If direct communication is used, then throughput increases, but connection to wired LAN and Internet is not enabled

Engineering Contradiction:

ImprovethroughputVSAvoidconnection capability

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The system dynamically switches between direct and indirect communication modes based on real-time communication quality measurements. The wireless communication apparatus evaluates whether direct communication or indirect communication via access point provides better communication quality and selects accordingly, making the communication path dynamic rather than fixed.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the communication mode parameter based on measured communication qualities. By comparing communication quality parameters of direct and indirect paths, the system determines which mode to use, effectively changing the communication parameter to optimize performance.

Inventive Principle:

Principle #35Parameter changes

3Measurement precision

If communication quality measurement is performed for both paths, then accurate path selection is enabled, but measurement overhead increases

Engineering Contradiction:

Improvepath selection accuracyVSAvoidmeasurement overhead

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The access point apparatus performs communication quality measurement for the indirect communication path using its own resources, eliminating the need for the wireless communication apparatus to perform separate measurements. This self-service approach reduces overall measurement overhead while maintaining measurement precision.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The access point apparatus acts as an intermediary that performs communication quality measurements on behalf of the wireless communication apparatus. By having the access point measure the indirect path quality, the system avoids redundant measurements and reduces total measurement overhead.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS9055516B2Wireless communication apparatus selecting one of direct communication path and indirect communication path via access point apparatus

Publication Date: 2015.06.09 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

AI summary

A first wireless communication apparatus acquires communication qualities of a first communication path, a second communication path and a direct communication path, respectively, adopts as a communication quality of an indirect communication path a lower communication qualities selected from the communication qualities of the first and second communication paths, and selects a communication path having a higher one of a communication performance corresponding to the direct communication path and a communication performance corresponding to the indirect communication path.