Trajectory-Based Handover Cell Selection With Privacy Protection
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Solution Overview
Problem
Existing communication systems face challenges in precisely configuring target candidate cells during handover while ensuring user privacy and security, leading to inefficiencies and potential handover failures due to inaccurate trajectory predictions and resource wastage.
Innovation Solution
A communication method where a first communication device transmits implicitly encoded trajectory information to a second communication device, allowing for precise configuration of target candidate cells without revealing precise location data, using AI models and statistical analysis to enhance prediction accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the source network device configures target candidate cells based on explicit location information, then the configuration precision is improved, but user privacy and security are compromised
Solution Approach 1:
The patent introduces trajectory information as an intermediary that indirectly indicates location without revealing precise position data. The terminal device reports trajectory information (e.g., historical location paths, movement patterns) to the network device, which then uses this intermediate data to predict future location and configure target candidate cells. This mediator approach allows the network to achieve accurate handover configuration while the user's precise location remains protected, as the trajectory data can be processed without exposing real-time exact position.
2Reliability
If the source network device uses traditional handover configuration methods, then the process is simple, but handover success rate decreases due to inaccurate predictions
Solution Approach 1:
The patent applies preliminary action by having the terminal device pre-report trajectory information to the network device before handover is needed. The network device uses this advance information to predict future location and pre-configure target candidate cells. This preliminary preparation ensures that when handover becomes necessary, the network device already has accurate prediction data ready, improving handover success rate without adding complexity during the critical handover moment itself.
3Measurement precision
If precise location information is transmitted for handover configuration, then target candidate cell determination accuracy is improved, but resource wastage increases due to security measures
Solution Approach 1:
The patent extracts only the necessary information elements for handover configuration from complete location data. Instead of transmitting or processing full precise location information, the system extracts and uses only trajectory-related features (movement patterns, historical paths, velocity vectors) that are sufficient for predicting future position and determining target candidate cells. This extraction approach maintains determination accuracy while reducing the computational and communication resources needed, as only essential trajectory characteristics are processed rather than complete location datasets.
Data Source
AI summary
Disclosed is a communication method and apparatus. A first communication device transmits first information to a second communication device. The first information implicitly indicates first trajectory information of the first communication device within a first time period, and the first trajectory information is configured to determine at least one target candidate cell.