5G Handover MBS Service Continuity via MRB to DRB Conversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
During handover in 5G wireless communication systems, there is a challenge in converting Multicast and Broadcast Services (MBS) from a Multicast Radio Bearer (MRB) to a Data Radio Bearer (DRB) when transferring from an MBS supporting node to a non-supporting node, leading to inefficiency and potential data loss.
Innovation Solution
The method involves receiving information about the MBS support capabilities of target access network nodes and reconfiguring the user equipment (UE) to use a DRB when handover occurs to a node that does not support MBS over MRB, ensuring seamless service continuity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If handover is performed from MBS supporting node to non-supporting node using MRB, then service continuity is maintained, but data loss occurs and handover efficiency deteriorates
Solution Approach 1:
The source base station performs preliminary actions by determining whether the target base station supports MBS over MRB before executing handover. Based on this determination, the source base station proactively converts the MRB to a DRB in advance, ensuring that the UE is properly configured to receive MBS services via unicast from the target node, thereby preventing data loss during the handover process
Solution Approach 2:
The invention changes the delivery mode parameter from multicast (MRB) to unicast (DRB) based on the target base station's MBS support capability. This parameter transformation allows the MBS service to be seamlessly delivered across nodes with different MBS support characteristics, resolving the data loss issue during handover
2Reliability
If handover is performed from MBS supporting node to non-supporting node using MRB, then service continuity is maintained, but handover efficiency deteriorates
Solution Approach 1:
The source base station performs preliminary determination of the target node's MBS support capability and proactively converts MRB to DRB before handover execution. This preliminary action streamlines the handover process by avoiding complex post-handover reconfiguration, thereby improving handover efficiency while maintaining service continuity
Solution Approach 2:
The invention dynamically adjusts the delivery mode (MRB to DRB conversion) based on real-time assessment of the target base station's MBS support capability. This dynamic adaptation enables the system to optimize handover procedures for each specific scenario, improving overall handover efficiency while ensuring reliable service continuity
Data Source
AI summary
A communication system(1) is disclosed in which a first access network node (base station) receives information indicating whether a second access network node supports Multicast and Broadcast Services (MBS). Interaction such as handover between the first access network node and the second access network node is controlled based on the information.A communication system(1) is disclosed in which a first access network node (base station) receives information indicating whether a second access network node supports Multicast and Broadcast Services (MBS). Interaction such as handover between the first access network node and the second access network node is controlled based on the information.