Multi-Modal Service Handover Coordination via Base Station Mediator
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Solution Overview
Problem
Existing methods for cell handover in multi-modal services face challenges in achieving synchronous transmission across different cells, leading to reduced service performance due to independent handover processes by individual terminals.
Innovation Solution
A method for multi-modal service-based cell handover, where a first base station transmits messages to a second base station and terminals, including device and service identifier information, to coordinate handover preparation and execution, ensuring all terminals involved in a multi-modal service can synchronously hand over to the same target cell.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If independent handover is performed by each terminal, then handover flexibility is improved, but synchronous transmission between terminals is deteriorated
Solution Approach 1:
The base station acts as an intermediary that coordinates handover for multiple terminals. It sends a first message to the target base station containing identifiers of multiple terminals and service information, then sends a third message to all terminals indicating the target cell, ensuring synchronized handover while maintaining flexibility
Solution Approach 2:
The patent merges the handover control of multiple terminals into a single coordinated process. The base station combines terminal identifiers and service information into one handover request message, and subsequently sends unified handover commands to all terminals, achieving both flexibility and synchrony
2Ease of operation
If multiple terminals hand over to different cells, then individual terminal performance is improved, but service performance is deteriorated
Solution Approach 1:
The base station serves as a mediator that receives handover requests from the target base station and distributes coordinated handover commands to multiple terminals. This ensures terminals hand over to the same target cell, maintaining service performance while allowing individual terminal optimization
Solution Approach 2:
The system implements feedback mechanisms where the target base station sends handover confirmation messages back to the source base station, which then coordinates the actual handover execution. This feedback loop ensures all terminals are synchronized to the same target cell, preserving service performance
Data Source
AI summary
The disclosure provides a method for multi-modal service-based cell handover and related devices. A first base station transmits a first message to a second base station. The first message includes device identifier information of multiple terminals and service identifier information of a first multi-modal service. The multiple terminals are terminals in a source cell of the first base station that carry data of the first multi-modal service. The first message is used for the first base station to request the second base station to perform handover preparation. The first base station receives a second message from the second base station. The second message indicates that the second base station completes the handover preparation. The first base station transmits a third message to the multiple terminals. The third message indicates a target cell for handover.