Location-Based Handover Parameter Tuning for High-Speed 5G Mobility
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Solution Overview
Problem
Conventional 5G networks face issues with unstable wireless communication quality due to inaccurate prediction of mobile terminal locations, leading to repeated handover failures and unsuitability for production networks, especially in environments requiring high-speed movement.
Innovation Solution
A method of adjusting handover-related parameters such as signal strength and handover offset based on location information, using a terminal management server to collect and predict movement paths, and an infrastructure management server to optimize handover settings for base stations, thereby improving communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed handover parameters are used for general users, then handover can be performed in conventional 5G networks, but handover stability deteriorates and repeated handover failures occur at specific points
Solution Approach 1:
The patent applies dynamics by transitioning from fixed handover parameters to dynamic parameters that change based on terminal location. The network device determines handover parameters adaptively according to the terminal's current location and movement trajectory, allowing the system to adjust to different spatial conditions rather than using uniform fixed values throughout the coverage area.
Solution Approach 2:
The patent implements local quality by assigning different handover parameters to different geographic locations. Instead of using a single fixed parameter set for the entire cell, the system tailors handover parameters (such as threshold values and offset values) to specific location characteristics, ensuring optimal handover performance for each local area along the terminal's movement path.
2Reliability
If handover is performed using fixed values comparing signal strength, then handover can be executed in conventional networks, but communication quality deteriorates due to crowded connections at specific points
Solution Approach 1:
The patent applies preliminary action by predicting the terminal's future movement trajectory and pre-determining handover parameters along the predicted path. The network device calculates the movement trajectory based on current location and historical data, then proactively configures appropriate handover parameters for upcoming locations before the terminal actually arrives there, preventing connection crowding issues in advance.
Solution Approach 2:
The system uses feedback by continuously monitoring the terminal's actual movement against predicted trajectories and adjusting handover parameters accordingly. The network device receives location information from the terminal, updates the movement trajectory prediction, and refines handover parameter selection based on this feedback loop, improving communication quality adaptively.
3Reliability
If fixed handover method is used, then handover can be performed for general users, but handover performance deteriorates for production networks requiring high-speed movement
Solution Approach 1:
The patent applies dynamics by adjusting handover parameters based on the terminal's movement speed characteristics. For production networks with high-speed moving terminals, the system determines location information more frequently and adjusts handover thresholds dynamically to accommodate faster movement, ensuring reliable handover performance regardless of speed variations.
Solution Approach 2:
The patent implements parameter changes by modifying handover-related parameters (such as signal strength thresholds, offset values, and timing parameters) according to the terminal's movement characteristics. For high-speed terminals in production networks, the system adjusts these parameters to account for faster signal changes and shorter dwell times in each cell, maintaining handover performance across different speed regimes.
Data Source
AI summary
A method of adjusting handover-related parameters includes: collecting, by a terminal management server, current location information from two or more mobile terminals and generating predicted movement path information for the two or more mobile terminals; determining, by an infrastructure management server, a predicted number of mobile terminals connected to each of two or more base stations which correspond to the predicted movement path information for each of the two or more mobile terminals; and adjusting, by the infrastructure management server, a handover-related parameter for a base station, among the two or more base stations, based on the number of mobile terminals actually connected to the base station of the two or more base stations and the predicted number of mobile terminals.