Conditional Handover Cell Prioritization for Service Continuity
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Solution Overview
Problem
Current wireless communication systems face challenges in ensuring seamless service continuity and efficient handover processes, particularly in scenarios where user equipment (UE) needs to switch to cells that do not support specific features, leading to degraded throughput and user experience.
Innovation Solution
The implementation of a method where user equipment (UE) receives configuration information for conditional handover (CHO), identifies cells associated with desired features, prioritizes monitoring of these cells, and initiates a handover to an identified cell based on monitoring results, thereby ensuring service continuity and reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE switches to cells that do not support specific features to maintain service continuity, then service continuity is improved, but throughput and user experience are degraded
Solution Approach 1:
The UE pre-identifies and stores information about cells that support required features before handover is needed. When handover is triggered, the UE immediately checks the pre-identified cell list to find a suitable target cell that maintains both service continuity and feature support, eliminating the need to switch to feature-less cells.
Solution Approach 2:
The system implements feedback mechanisms where the UE reports feature requirements and cell measurements to the network. The network uses this feedback to provide handover commands that direct the UE to cells supporting required features, ensuring both service continuity and maintained throughput through informed handover decisions.
2Measurement precision
If the UE monitors all configured cells equally during conditional handover, then handover decision accuracy is improved, but processing time and complexity increase
Solution Approach 1:
The UE applies different monitoring priorities to different cells based on their feature support characteristics. Cells identified as supporting required features are monitored with higher priority and more frequent measurements, while other cells receive reduced monitoring. This localized quality approach maintains accurate handover decisions for feature-capable cells without the time cost of equally monitoring all cells.
Solution Approach 2:
The set of configured cells is segmented into two groups: cells supporting required features and cells not supporting required features. The UE focuses monitoring efforts on the first group, performing detailed measurements only on these cells. This segmentation reduces the overall monitoring burden and processing time while maintaining handover accuracy for suitable target cells.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive configuration information identifying a set of cells configured for conditional handover (CHO). The UE may identify one or more features associated with a cell. The UE may monitor one or more cells of the set of cells, wherein the one or more cells are associated with the one or more features, and wherein the one or more cells are prioritized over cells not associated with the one or more features in the cell search. The UE may initiate a handover to an identified cell based at least in part on the cell search. Numerous other aspects are described.