Wireless Conditional Handover Configuration Management for Failure Recovery
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Solution Overview
Problem
Existing wireless communication systems face challenges in managing conditional handover (CHO) configurations, leading to inefficient resource usage, increased latency, and service interruptions due to failed handover attempts.
Innovation Solution
Implementing techniques for conditional handover deconfiguration and failure handling, where user equipment (UE) autonomously measures and deconfigures CHO configurations based on measurement criteria and timers, and initiates handovers to alternative target base stations until successful, with failure handling mechanisms to reduce latency and resource consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple CHO configurations are provided to UE for multiple target base stations, then handover readiness and network resource allocation are improved, but configuration management complexity and resource overhead increase
Solution Approach 1:
The patent segments the CHO configuration management into distinct operational phases: configuration reception, condition evaluation, autonomous deconfiguration based on measurement criteria, and failure handling. This segmentation allows the UE to manage multiple target base station configurations systematically without overwhelming complexity, processing each configuration independently through defined stages.
Solution Approach 2:
The patent implements self-service by enabling the UE to autonomously evaluate measurement criteria and deconfigure CHO configurations without requiring continuous network control. The UE independently monitors conditions, makes decisions about configuration validity, and manages handover attempts, reducing the network's management burden while maintaining reliable handover readiness.
2Reliability
If CHO configurations include detailed failure handling information and timers, then handover reliability is improved, but configuration size and processing overhead increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring CHO configurations with embedded failure handling information and timers before handover events occur. These pre-established parameters enable the UE to quickly identify and respond to failures without requiring extensive real-time analysis, reducing processing overhead while maintaining high reliability through proactive failure preparation.
Solution Approach 2:
The patent utilizes parameter changes by dynamically adjusting timer values and failure handling parameters based on network conditions and measurement results. The UE modifies configuration parameters adaptively during operation, allowing detailed failure handling information to be applied only when needed, thereby reducing overall configuration size while maintaining reliability where required.
3Reliability
If UE performs frequent measurement evaluations and handover attempts, then service continuity is improved, but latency and resource consumption increase
Solution Approach 1:
The patent implements feedback mechanisms where the UE continuously monitors measurement criteria and reports to the network, enabling informed decisions about configuration validity and handover timing. This feedback loop allows the system to optimize between frequent measurements for service continuity and timely handover execution, reducing unnecessary latency through intelligent feedback-driven actions.
Solution Approach 2:
The patent applies dynamics by making measurement evaluation frequency and handover attempt timing adaptive rather than fixed. The system dynamically adjusts monitoring intensity based on current network conditions, signal quality, and configuration status, performing frequent measurements only when necessary to maintain service continuity while avoiding unnecessary latency through relaxed monitoring during stable conditions.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described for management of conditional handover (CHO) configurations. A source base station may configure a user equipment (UE) with one or more CHO configurations for multiple target base stations. The CHO configurations may provide, for each target base station, one or more associated conditions that may trigger the UE to initiate a handover to the particular target base station, or to deconfigure a CHO configuration, such as based on a measurement threshold of one or more target base station measurements, one or more source base station measurements, or combinations thereof. The CHO configurations may also include failure handling information for initiating one or more subsequent handovers responsive to a failure of an initial handover attempt.