Cell Reselection Controller for Delay-Sensitive Data
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Solution Overview
Problem
Current wireless communication systems experience significant delays and data packet loss during cell reselection, particularly in delay-sensitive applications like real-time video streaming, due to independent mobile station decisions that lead to network overhead and performance degradation.
Innovation Solution
A cell reselection controller in the mobile station that assesses the impact of cell reselection on delay-sensitive data applications, using parameters like data transfer rates, historical delays, and buffer states to selectively inhibit cell reselection and prevent data packet loss, ensuring continuous data flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cell reselection is performed based on signal strength alone, then mobile station can maintain connection quality, but delay-sensitive applications suffer from packet loss and service interruption
Solution Approach 1:
The patent dynamically adjusts cell reselection behavior based on application requirements. The mobile station determines whether delay-sensitive applications are running and modifies reselection parameters accordingly, transitioning from static signal-strength-based reselection to dynamic application-aware reselection that balances connection quality with application performance
Solution Approach 2:
The patent changes reselection parameters such as threshold offsets and hysteresis values based on application type. When delay-sensitive applications are detected, the system modifies reselection thresholds to prevent unnecessary reselections, thereby reducing packet loss and service interruption while maintaining adequate connection quality
2Reliability
If cell reselection is performed frequently to maintain signal quality, then connection reliability improves, but network overhead and processing complexity increase
Solution Approach 1:
The mobile station autonomously determines whether delay-sensitive applications are running and self-adjusts reselection parameters without requiring complex network control. The device uses local application state information to make intelligent reselection decisions, reducing network overhead and simplifying overall system complexity while maintaining connection reliability
3Productivity
If cell reselection is inhibited to prevent packet loss, then application continuity is maintained, but signal quality degradation occurs
Solution Approach 1:
The patent applies different reselection strategies to different applications based on their delay sensitivity characteristics. Delay-sensitive applications receive protected reselection handling with modified thresholds, while non-sensitive applications use standard reselection procedures, allowing the system to optimize for application continuity where needed without compromising overall signal quality management
Data Source
AI summary
A mobile station for receiving delay-sensitive data from a wireless communications network is provided with a data buffer and cell reselection controller. The data buffer receives data from the network and stores the data for communication to a delay-sensitive data application. The cell reselection controller selectively inhibits cell reselection in order to meet requirements of the delay-sensitive data application. By intelligently controlling cell reselection, delay sensitive data may be received in a more reliable fashion, thereby increasing performance of the data application.