Base Station Handover Prediction Using Vehicle Motion Status
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Solution Overview
Problem
Current base station handover methods in intelligent transportation systems (ITS) based on signal strength are inadequate for vehicles, which require higher service continuity and lower transmission delay due to their high speed, leading to potential service disruptions during handovers.
Innovation Solution
A method and device that predict the duration of base station handover based on a mobile device's motion status, including direction, speed, and acceleration, allowing for a seamless transition when the device enters the signal coverage area of the next base station, ensuring timely and efficient handover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If base station handover is determined based on signal strength only, then the handover decision is simple, but the handover timeliness and reliability deteriorate for high-speed vehicles
Solution Approach 1:
The system performs preliminary actions by obtaining vehicle motion status (speed, direction, acceleration) and predicting future position and signal strength trends before handover is actually needed. This allows the handover to be initiated at the optimal time, ensuring reliable connection switching for high-speed vehicles without waiting for signal strength to deteriorate critically.
Solution Approach 2:
The handover decision mechanism transitions from a static signal-strength-threshold approach to a dynamic prediction-based approach that adapts to vehicle motion status. The system dynamically adjusts handover timing based on real-time motion parameters, enabling reliable handover for high-speed vehicles while maintaining simplicity for low-speed scenarios.
2Reliability
If base station handover is initiated earlier to ensure service continuity, then service continuity is improved, but transmission delay increases
Solution Approach 1:
The system performs preliminary prediction of signal strength trends and vehicle position based on motion status, allowing handover preparation to start in advance but only when prediction indicates optimal timing. This avoids premature handover initiation while ensuring service continuity, thereby minimizing unnecessary transmission delays.
Solution Approach 2:
The system continuously monitors vehicle motion status and signal strength predictions, using this feedback to dynamically adjust handover timing. This feedback mechanism ensures handover is initiated at the precise moment when it benefits service continuity without introducing unnecessary delay, optimizing the trade-off between reliability and time loss.
3Loss of time
If handover is delayed until signal strength drops below threshold, then transmission delay is minimized, but service continuity deteriorates for high-speed vehicles
Solution Approach 1:
By obtaining vehicle motion status and predicting future position and signal strength, the system performs preliminary assessment to determine the optimal handover moment. This allows handover to be initiated before signal strength critically drops for high-speed vehicles, ensuring service continuity without excessive delay.
Solution Approach 2:
The system changes the decision parameters from static signal strength threshold alone to a combination of motion status parameters (speed, direction, acceleration) and predicted signal strength. This parameter change enables differentiated handover timing that maintains service continuity for high-speed vehicles while minimizing handover delay.
Data Source
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AI summary
The present invention discloses a base station switching method and device based on a motion status of a mobile device. The method includes: obtaining a current location and a motion status of a mobile device; predicting, based on the current location and the motion status of the mobile device, duration from a current moment to a moment when a base station that serves the mobile device completes switching from a first base station to a second base station, where the first base station is a base station that currently serves the mobile device, and the second base station is a next base station that serves the mobile device; and after the mobile device maintains a first communication connection to the first base station and establishes a second communication connection to the second base station, initiating the switching from the first base station to the second base station when a specified threshold arrives after a particular period of time of the duration elapses. According to the base station switching method and device based on a motion status of a mobile device provided in embodiments of the present invention, base station switching can be initiated at a more proper time, and can be quickly and seamlessly completed, so as to meet requirements of security assurance and efficiency improvement.