MBMS Handover via Service Reception Info
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Solution Overview
Problem
Current mobile communication systems experience MBMS service interruptions during handovers due to the selection of cells that do not support MBMS services, as they primarily choose cells based on signal quality without considering MBMS service availability.
Innovation Solution
A method and apparatus that acquire MBMS service reception information to select a target cell supporting MBMS services for seamless handovers, ensuring continuous MBMS service by using MBMS service reception information, MBSFN area information, MBMS session information, and UE measurement reports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the source base station selects a target cell based on signal quality from measurement reports, then the handover decision is simple and fast, but the MBMS service continuity cannot be guaranteed
Solution Approach 1:
The source base station pre-acquires MBMS service reception information from the target cell before making the handover decision. This preliminary action ensures that when handover is executed, the target cell is already confirmed to support MBMS service, thus guaranteeing service continuity without adding significant decision time
Solution Approach 2:
The patent introduces an intermediary mechanism where the source base station obtains MBMS service reception information from the target cell through inter-base station communication. This intermediary information exchange allows the source base station to make informed handover decisions that maintain MBMS service continuity
2Reliability
If the source base station checks MBMS service reception information from the target cell before handover, then the MBMS service continuity is guaranteed, but the handover process complexity increases
Solution Approach 1:
The patent extracts the MBMS service reception information checking step as a separate, independent operation that the source base station performs before handover. This extracted function is implemented through dedicated information acquisition from the target cell, simplifying the overall handover logic by separating the service compatibility check from the signal quality evaluation
Solution Approach 2:
The source base station performs the MBMS service reception information acquisition itself through its own capabilities to communicate with the target cell. This self-service approach eliminates the need for additional network entities or complex multi-step verification processes, reducing overall system complexity
3Loss of time
If the source base station hands over the device to a cell with better signal quality without checking MBMS support, then the handover is fast and simple, but the MBMS service is interrupted
Solution Approach 1:
The source base station performs preliminary acquisition of MBMS service reception information from the target cell before executing the handover. This preliminary check ensures that the target cell supports MBMS service, preventing service interruption while maintaining fast handover execution
Solution Approach 2:
The patent changes the handover selection criteria by incorporating MBMS service reception information as an additional parameter alongside signal quality. This parameter change transforms the handover decision from a single-criterion (signal quality) to a multi-criterion decision, ensuring both speed and service continuity
Data Source
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AI summary
Disclosed in the present invention are a method and apparatus for handing over device, and belongs to the field of mobile communication. The method comprises: obtaining the Multimedia Broadcast Multicast Service (MBMS) service reception information of the device; according to the MBMS service reception information, selecting a target cell supporting the MBMS service for the device; handing over the device to the target cell. The apparatus comprises: an acquiring module, for obtaining the MBMS service reception information of the device; a selection module, for selecting a target cell supporting the MBMS service for the device according to the MBMS service reception information; a handing over module, for handing over the device to the target cell. By the implementation of the technical solution that selecting a target cell supporting the MBMS service for the device according to the MBMS service reception information, and switching the device to the target cell, the present invention guarantees the continuity of the MBMS service during the handover process of the device.