MBMS Handover Selection Using Neighbor Cell Configuration Data
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Solution Overview
Problem
Current device handover methods in MBMS services often result in service interruptions due to the selection of cells that do not support MBMS, leading to disruptions in multimedia broadcast and multicast services when user equipment moves between MBSFN areas.
Innovation Solution
A method and apparatus for device handover that involves obtaining MBMS service configuration information of neighboring cells and selecting a target cell based on this information and the user equipment's service reception data to ensure seamless handover to a cell that supports MBMS, thereby preventing service interruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the source base station selects a target cell based solely on measurement report signal quality, then the handover decision is simple and fast, but the MBMS service may be interrupted because the selected cell may not support MBMS
Solution Approach 1:
The source base station performs preliminary action by obtaining MBMS service configuration information of neighbor cells before executing handover. This allows the system to pre-verify which cells support MBMS service, ensuring that when handover occurs, the target cell can actually provide the required service, thus preventing service interruption while maintaining efficient handover execution
Solution Approach 2:
The system implements feedback mechanism where the source base station uses the obtained MBMS service configuration information of neighbor cells to adjust the handover decision. This feedback loop ensures that only cells capable of supporting MBMS are selected as target cells, resolving the contradiction between fast handover decision and service continuity
2Reliability
If the source base station obtains MBMS service configuration information of neighbor cells before handover, then MBMS service continuity is ensured, but the handover procedure becomes more complex
Solution Approach 1:
The source base station performs the information gathering action in advance during the handover preparation phase, rather than during the execution phase. This timing optimization allows the complexity of obtaining and processing MBMS configuration information to be contained within the preparation phase, minimizing its impact on the overall handover procedure complexity
Solution Approach 2:
The patent introduces an intermediary information structure (MBMS service configuration information) that mediates between the handover decision process and the service continuity requirement. This intermediary data structure organizes the complexity in a manageable way, allowing the source base station to make informed handover decisions without overwhelming system complexity
Data Source
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AI summary
Disclosed in the present invention are a method and an apparatus for device handover, which belongs to the mobile communication field. The method comprises the following steps: obtaining a Multimedia Broadcast Multicast Service (MBMS) service configuration information of neighbor cells; selecting a target cell for a user equipment according to the MBMS service configuration information of the neighbor cells and the MBMS service reception information of the user equipment; handing over the user equipment to the target cell. The apparatus comprises: an acquiring module, for obtaining the Multimedia Broadcast Multicast Service (MBMS) service configuration information of the neighbor cells; a selecting module, for selecting a target cell for a user equipment according to the MBMS service configuration information of the neighbor cells and the MBMS service reception information of the user equipment; a handover module, for handing over the user equipment to the target cell. With the implementation of the technical solution that the MBMS service configuration information of the neighbor cells is obtained, the target cell for the user equipment is selected according to the MBMS service configuration information and the MBMS service reception information of the user equipment, and the user equipment is handed over to the target cell, the present invention enables the user equipment to switch to an appropriate target cell.