Dynamic Wireless Roaming Threshold Adjustment for Mobile Connectivity

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Providing reliable wireless communications in dynamic environments is challenging due to varying signal strengths of wireless access points and environmental interference, which affects the continuous connectivity of mobile computing devices.

Innovation Solution

A method that dynamically updates wireless communications by determining signal strengths, searching for stronger access points, and adjusting thresholds to optimize roaming and scanning processes, including setting roam and search triggering signal strength thresholds based on current conditions and minimizing unnecessary resource usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the mobile computing device continuously searches for wireless access points with stronger signal strength, then the reliability of wireless communications is improved, but the power consumption and processing resources increase

Engineering Contradiction:

Improvewireless communication reliabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic adjustment of the search triggering signal strength threshold based on current signal conditions. When the current access point provides strong signal strength, the threshold is raised to reduce unnecessary searches. When signal strength deteriorates, the threshold is lowered to trigger searches only when needed. This dynamic adaptation resolves the contradiction by making the system responsive to actual conditions rather than continuously searching.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the parameter of search triggering signal strength threshold dynamically. By adjusting this threshold parameter based on current signal quality and historical performance, the system optimizes the balance between maintaining reliable connectivity and conserving power resources. The threshold is modified based on measured signal strengths and roaming outcomes.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If the mobile computing device performs frequent scanning for wireless access points, then the reliability of wireless communications is improved, but the processing resources and storage requirements increase

Engineering Contradiction:

Improvecontinuous connectivityVSAvoidprocessing resources

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The scanning frequency and triggering mechanism are made dynamic rather than static. The system adjusts scanning behavior based on current signal conditions, movement detection, and threshold comparisons. This eliminates unnecessary scanning operations while maintaining connectivity reliability, thereby reducing processing resource consumption.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system uses its own measured signal strength data to intelligently determine when scanning is necessary. By self-monitoring signal quality and comparing against dynamically adjusted thresholds, the device autonomously decides when to initiate searches, reducing unnecessary processing overhead while maintaining reliable connectivity.

Inventive Principle:

Principle #25Self-service

3Reliability

If the mobile computing device uses a lower search triggering signal strength threshold, then the reliability of wireless communications is improved by finding stronger access points, but unnecessary searches increase power consumption

Engineering Contradiction:

Improveconnection qualityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

Rather than using a fixed low threshold that triggers unnecessary searches, the system dynamically adjusts the search triggering threshold based on current signal conditions. The threshold adapts to maintain connection quality while avoiding excessive searching, resolving the contradiction between reliability and power consumption.

Inventive Principle:

Principle #15Dynamics

4Reliability

If the mobile computing device roams frequently to maintain optimal signal strength, then the reliability of wireless communications is improved, but the stability of current connection and power consumption are worsened

Engineering Contradiction:

Improvesignal strengthVSAvoidconnection stability

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The system applies preliminary anti-action by implementing hysteresis in the roaming decision process. Before triggering a roam, the system verifies that signal conditions have deteriorated sufficiently and that no better access points are available. This prevents premature or unnecessary roaming actions that would destabilize the connection.

Inventive Principle:

Principle #9Preliminary anti-action

Solution Approach 2:

The system uses feedback from signal strength measurements and roaming outcomes to adjust future roaming decisions. By monitoring the results of previous roaming actions and current signal conditions, the system learns optimal roaming behavior that maintains signal strength while avoiding excessive switching that would reduce connection stability.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS8014354B2Dynamically configured wireless communications, for example, in automatic data collection environment

Publication Date: 2011.09.06 INTERMEC IP CORP

AI summary

Dynamic configuration of a wireless environment, for example a wireless automatic data collection environment adjust various thresholds that trigger searching or scanning for new wireless access points (WAPs) and/or roaming. Thresholds may be increased or decreased based on various outcomes.