Dynamic Handoff Thresholds for Wireless Systems
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in handoff processes due to reliance on fixed round trip delay thresholds, leading to increased handoff messaging and potential traffic congestion, as these thresholds do not account for varying signal strengths and past handoff metrics.
Innovation Solution
A method where wireless communication systems determine and transfer a second round trip delay threshold based on processed metrics from past handoffs, allowing wireless communication devices to modify their handoff thresholds dynamically, thereby optimizing handoff communications and reducing unnecessary transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed round trip delay thresholds are used to initiate handoff messaging, then handoff messaging is triggered consistently, but handoff messaging increases and traffic congestion occurs
Solution Approach 1:
The patent applies dynamics by transitioning from fixed thresholds to dynamic thresholds that adapt based on past handoff metrics. The system continuously monitors round trip delay metrics from previous handoffs and adjusts the threshold accordingly, allowing the handoff messaging trigger to be flexible and adaptive rather than rigid and static.
Solution Approach 2:
The patent implements feedback by using past handoff metrics (round trip delay measurements from previous handoffs) to modify the current handoff threshold. This closed-loop approach where historical performance data influences future threshold settings enables the system to learn from past behavior and adjust messaging triggers to reduce unnecessary handoff communications.
2Ease of operation
If fixed round trip delay thresholds are used, then handoff messaging is triggered uniformly, but unnecessary handoffs occur due to not considering signal strength variations
Solution Approach 1:
The system dynamically adjusts handoff thresholds based on actual network conditions and past handoff performance. Instead of using a uniform fixed threshold, the system adapts the threshold values according to observed round trip delay metrics, signal strength variations, and historical handoff patterns, making the handoff process more responsive to changing network conditions.
Solution Approach 2:
The patent changes the parameter of handoff threshold values based on processed handoff metrics. The system modifies threshold parameters dynamically by analyzing past handoff data, adjusting round trip delay thresholds and other relevant parameters to better suit current network conditions, thereby reducing unnecessary handoffs while maintaining operational simplicity.
3Productivity
If dynamic threshold modification is implemented, then handoff efficiency improves, but system complexity increases
Solution Approach 1:
The system performs self-service by automatically monitoring, analyzing, and adjusting handoff thresholds based on its own past performance data. The wireless communication device collects round trip delay metrics from previous handoffs and uses this self-generated data to modify future thresholds, eliminating the need for external manual configuration or complex centralized control systems.
Solution Approach 2:
The patent uses feedback mechanisms where the system monitors its own handoff performance and uses this information to automatically adjust thresholds. This self-feedback loop allows the system to improve handoff efficiency autonomously without requiring complex external management systems or manual intervention, thereby limiting the increase in overall system complexity.
Data Source
AI summary
What is disclosed is a method of operating a wireless communication system. The method includes determining a first round trip delay threshold to initiate handoff messaging, and determining round trip delay metrics for a plurality of handoffs in a wireless access sector. The method also includes processing the first round trip delay threshold and the round trip delay metrics for the wireless access sector to determine a second round trip delay threshold and wirelessly transferring the second round trip delay threshold to a wireless communication device in the wireless access sector, where the wireless communication device uses the second round trip delay threshold to initiate handoff messaging in the wireless access sector.