Communication Apparatus Spatial Reuse Management

Solution Overview

Problem

In wireless communication systems, concurrent connections using the same frequency and different BSS colors often result in signal collisions, particularly when devices operate in both infrastructure and Wi-Fi Direct modes, leading to inefficient use of wireless media.

Innovation Solution

A communication apparatus that determines whether spatial reuse communication is usable in one network and disables this function in another network to prevent signal collisions, using determination and decision mechanisms to manage BSS colors and transmission parameters in IEEE802.11ax networks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If spatial reuse communication is enabled in both wireless networks, then wireless media efficiency is improved, but signal collision occurs between concurrent connections

Engineering Contradiction:

Improvewireless media efficiencyVSAvoidsignal collision

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent applies local quality by differentiating the spatial reuse setting between two wireless networks. The first wireless network (infrastructure mode) enables spatial reuse for efficient media usage, while the second wireless network (Wi-Fi Direct mode) disables spatial reuse to prevent signal collision. This localized differentiation allows each network to operate with optimal parameters for its specific communication scenario.

Inventive Principle:

Principle #3Local quality

2Adaptability or versatility

If concurrent connection is established with same frequency and different BSS colors, then connectivity flexibility is improved, but signal collision probability increases

Engineering Contradiction:

Improveconcurrent connection capabilityVSAvoidsignal collision

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies local quality by differentiating the spatial reuse setting between two wireless networks. The first wireless network (infrastructure mode) enables spatial reuse for efficient media usage, while the second wireless network (Wi-Fi Direct mode) disables spatial reuse to prevent signal collision. This localized differentiation allows each network to operate with optimal parameters for its specific communication scenario.

Inventive Principle:

Principle #3Local quality

3Reliability

If spatial reuse function is disabled in one network, then signal collision is reduced, but wireless media efficiency decreases

Engineering Contradiction:

Improvesignal collision reductionVSAvoidwireless media efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent applies local quality by differentiating the spatial reuse setting between two wireless networks. The first wireless network (infrastructure mode) enables spatial reuse for efficient media usage, while the second wireless network (Wi-Fi Direct mode) disables spatial reuse to prevent signal collision. This localized differentiation allows each network to operate with optimal parameters for its specific communication scenario.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12058670B2Communication apparatus and control method therefor

Publication Date: 2024.08.06 CANON KK

AI summary

A communication apparatus operable in both a base station mode and a terminal mode, determines whether spatial reuse communication is usable in a first wireless network to be connected in the terminal mode; and decides, based on determination that the spatial reuse communication is usable in the first wireless network, to disable a function concerning the spatial reuse communication in a second wireless network established in the base station mode.