IRAT Transition Tracking for 4G LTE and 5G NR Handover Optimization
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Solution Overview
Problem
Excessive inter-radio access technology (IRAT) transitions in wireless devices result in poor user experience and increased network capacity requirements due to intensive resource usage, particularly in scenarios involving 4G LTE and 5G NR handovers, leading to network inefficiencies and higher operational costs.
Innovation Solution
A system and method for tracking IRAT transitions, analyzing these transitions across various variables, and generating recommendations for optimization to minimize unnecessary transitions by adjusting network settings and configurations based on identified hotspots and device models.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If IRAT handovers are implemented to enable wireless devices to access services across different RATs, then service availability and adaptability are improved, but network resource consumption and transition interruption increase
Solution Approach 1:
The system implements feedback mechanisms by monitoring IRAT transition patterns, device behaviors, and network conditions. It collects data on transition frequency, device types, locations, and timing, then uses this feedback to automatically adjust handover parameters and optimize transition policies, reducing unnecessary transitions while maintaining service availability
Solution Approach 2:
The system dynamically changes network parameters such as handover thresholds, timing advance values, and frequency offsets based on observed transition patterns. By adjusting these parameters in response to measured conditions, the system optimizes IRAT transitions to reduce resource consumption while preserving adaptability
2Adaptability or versatility
If IRAT handovers are performed to access services like voice on 4G LTE from 5G SA, then service coverage is improved, but call flow complexity and transition interruption increase
Solution Approach 1:
The system performs preliminary actions by pre-configuring handover parameters and service routing information before IRAT transitions occur. It prepares call flow procedures and network path configurations in advance, reducing the complexity and interruption time during actual service transitions between 5G SA and 4G LTE
3Reliability
If continuous IRAT handovers occur in ping-pong scenarios, then wireless devices maintain connectivity across RAT boundaries, but network capacity requirements and operational costs increase
Solution Approach 1:
The system implements feedback mechanisms by monitoring IRAT transition patterns, device behaviors, and network conditions. It collects data on transition frequency, device types, locations, and timing, then uses this feedback to automatically adjust handover parameters and optimize transition policies, reducing unnecessary transitions while maintaining service availability
Solution Approach 2:
The system enables self-service by allowing the network to automatically detect ping-pong scenarios and self-correct through automated parameter adjustments. The system identifies problematic transition patterns and autonomously modifies handover thresholds and timing parameters without requiring manual intervention, thereby maintaining connectivity while improving network capacity efficiency
Data Source
AI summary
Systems, methods and devices are provided for improving network performance by performing optimizations to minimize inter-radio access technology (IRAT) transitions. A method includes tracking the IRAT transitions in conjunction with correlating variables, identifying excessive IRAT transitions meeting a threshold and performing an optimization based on the identification and the correlating variables.