Terminal Device Specific Handover Parameters for Anomaly Avoidance
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Solution Overview
Problem
Handover failures and anomalies, such as ping-pongs, short stays, and remote cell handover anomalies, occur in communication networks, disrupting service and affecting vehicular applications.
Innovation Solution
The implementation of UE-specific handover parameters, determined by analyzing mobility conditions and detecting handover anomalies, allows for customized handover settings for individual terminal devices, thereby avoiding anomalies and failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If generic handover parameters are used for all terminal devices, then network operation is simple, but handover failures and anomalies occur frequently
Solution Approach 1:
The patent applies local quality by transitioning from uniform handover parameters applied to all terminal devices to device-specific handover parameters tailored to individual mobility conditions. The network determines and configures unique handover parameters for each terminal device based on its specific mobility pattern, thereby improving handover reliability without requiring complete system redesign.
Solution Approach 2:
The patent implements dynamics by making handover parameters adaptive rather than static. The network continuously monitors mobility conditions of terminal devices and dynamically adjusts handover parameters accordingly. This allows the system to respond to changing mobility patterns and avoid handover failures while maintaining manageable complexity through automated adaptation.
2Reliability
If device-specific handover parameters are implemented, then handover reliability improves, but network complexity increases
Solution Approach 1:
The patent applies self-service by enabling the network to automatically determine and configure device-specific handover parameters without requiring complex manual intervention. The system autonomously monitors mobility conditions, identifies appropriate parameters, and configures them for each terminal device, thereby improving service continuity while keeping operational complexity manageable through automation.
Solution Approach 2:
The patent implements feedback mechanisms where the network continuously monitors terminal device mobility conditions and handover performance. Based on this feedback, the system dynamically adjusts handover parameters to optimize reliability. This closed-loop approach ensures service continuity while maintaining manageable complexity through data-driven automatic adjustments.
3Reliability
If handover parameters are adjusted frequently, then handover anomalies are reduced, but signaling overhead increases
Solution Approach 1:
The patent applies partial action by adjusting handover parameters selectively based on detected mobility conditions rather than uniformly for all devices. The network determines whether parameter adjustments are necessary based on specific mobility patterns, thereby reducing handover anomalies while minimizing unnecessary signaling overhead through targeted rather than universal parameter changes.
Data Source
Figure 1A~1B
Figure 1C~2
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AI summary
There is provided a method in a cellular communication network, the method comprising: upon detecting that a terminal device has or is going to have a mobility condition previously determined to be associated with a handover anomaly or failure, determining terminal device specific handover parameters for said terminal device to avoid said handover anomaly or failure; and causing utilizing said terminal device specific handover parameters in one or more handovers associated with the terminal device.