Wireless Channel Selection Using Precomputed Interference Reference Values

Solution Overview

Problem

In wireless networks, selecting an idle channel with better communication quality is time-consuming due to interference from overlapping channels, as conventional methods require detecting interference levels across multiple channels.

Innovation Solution

A method that compares the frequency bands of in-use and idle channels to determine reference values, allowing for the selection of an idle channel with minimal interference using a mathematical algorithm, such as weighted calculations based on the proximity of idle channels to in-use channels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional interference detection method is used to select idle channel, then communication quality can be evaluated, but channel selection time is excessive

Engineering Contradiction:

Improvecommunication qualityVSAvoidchannel selection time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent pre-calculates and stores reference values for all possible channel combinations before actual channel selection. When an idle channel needs to be selected, the system simply retrieves the pre-computed reference value corresponding to the detected in-use channels, avoiding time-consuming real-time interference detection while maintaining accurate communication quality evaluation

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent pre-calculates and stores reference values for all possible channel combinations before actual channel selection. When an idle channel needs to be selected, the system simply retrieves the pre-computed reference value corresponding to the detected in-use channels, avoiding time-consuming real-time interference detection while maintaining accurate communication quality evaluation

Inventive Principle:

Principle #10Preliminary action

2Reliability

If idle channel selection is delayed to ensure quality, then communication quality improves, but system productivity decreases

Engineering Contradiction:

Improvecommunication qualityVSAvoidsystem startup speed

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent pre-calculates and stores reference values for all possible channel combinations before actual channel selection. When an idle channel needs to be selected, the system simply retrieves the pre-computed reference value corresponding to the detected in-use channels, avoiding time-consuming real-time interference detection while maintaining accurate communication quality evaluation

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS7406062B2Method for selecting a channel in a wireless network

Publication Date: 2008.07.29 REALTEK SEMICON CORP

AI summary

A method for selecting one channel from a plurality of channels in a wireless network system is disclosed. The channels include at least one in-use channel, a first idle channel, and a second idle channel. The method includes comparing the frequency band of the in-use channel with the frequency band of the first idle channel and the second idle channel to determine a first reference value for the first idle channel and a second reference value for the second idle channel, and comparing the first reference value with the second reference value to select one from the first idle channel and the second idle channel.