Satellite Handover Measurement Configuration for Group Mobility
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Solution Overview
Problem
Current cell handover methods in satellite networks are inadequate for group handovers triggered by satellite motion, leading to inefficiencies and reduced success rates in terminal device handovers.
Innovation Solution
A handover method involving multiple measurement configurations for downlink reference signals, tailored for both satellite and terminal device movements, to improve handover efficiency and success rates by distinguishing between different types of handovers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current cell handover methods are used for satellite networks, then the handover process can be performed, but the handover efficiency and success rate deteriorate due to group handover caused by satellite motion
Solution Approach 1:
The patent segments the handover process by introducing two distinct measurement configuration types: first measurement configuration information for group handover (satellite motion) and second measurement configuration information for individual handover (terminal movement). This segmentation allows each handover scenario to be optimized independently, resolving the contradiction between handover success rate and efficiency
Solution Approach 2:
The patent implements dynamic measurement configuration where the terminal device can adaptively select between first and second measurement configuration information based on the handover trigger type. The measurement resources, reference signals, and evaluation criteria are dynamically adjusted according to whether the handover is caused by satellite motion or terminal movement, thereby improving both success rate and efficiency
2Adaptability or versatility
If a single measurement configuration is used for all handover scenarios, then the configuration process is simple, but it cannot adapt to different handover triggers causing measurement interference and reduced accuracy
Solution Approach 1:
The measurement configuration is segmented into distinct types (first and second measurement configuration information) tailored to different handover scenarios. Each configuration type includes specific parameters optimized for its intended use case, enabling adaptability without requiring a complete redesign of the measurement system
Solution Approach 2:
Different measurement configuration parameters are applied locally to different handover scenarios. The first measurement configuration uses parameters optimized for group handover (e.g., specific reference signal resources for satellite tracking), while the second uses parameters optimized for individual handover (e.g., terminal mobility-based measurements). This local optimization achieves high adaptability while maintaining manageable complexity through scenario-specific customization
Data Source
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AI summary
This application provides a handover method and a communication apparatus, to improve efficiency and a success rate of handover. The method includes: A terminal device obtains first measurement configuration information and second measurement configuration information, to measure a first-type downlink reference signal based on first position information and the first measurement configuration information; and/or measure a second-type downlink reference signal based on second position information and the second measurement configuration information, to obtain a measurement result. The terminal device determines, based on the measurement result, whether to perform cell handover.