NR MBS Session Handling Through Radio Bearer Release
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Solution Overview
Problem
Existing technologies have not adequately addressed efficient reception of Multimedia Broadcast Multicast Service (MBS) in New Radio (NR) cellular mobile communication systems, lacking detailed operations for MBS transmission specific to NR core networks.
Innovation Solution
A terminal apparatus and method that includes a receiver to process RRC messages for MBS configuration, releasing radio bearers upon session stop and notifying higher layers of MBS session information, enabling efficient MBS reception using NR.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If detailed operations for MBS reception specific to NR core networks are not established, then MBS services can be transmitted in NR networks, but efficient reception of MBS services cannot be achieved
Solution Approach 1:
The patent applies preliminary action by having the network side pre-configure MBS reception parameters and radio bearer settings before MBS service transmission. The terminal apparatus receives and stores MBS configuration information including radio bearer identities, QoS parameters, and session management settings in advance, enabling efficient MBS reception without complex real-time processing decisions.
2Productivity
If radio bearers are not released upon MBS session stop, then resource allocation remains simple, but resources are wasted and reception efficiency decreases
Solution Approach 1:
The patent implements discarding and recovering by automatically releasing radio bearers when MBS sessions stop. The terminal apparatus monitors MBS session status and releases associated radio bearers and configuration resources when sessions terminate, ensuring efficient resource utilization and preventing resource waste while maintaining simple operational procedures.
3Productivity
If MBS session information is not notified to higher layers, then processing is simpler, but service management and optimization cannot be achieved
Solution Approach 1:
The patent applies feedback by notifying higher layers of the protocol stack about MBS session information including session establishment, modification, and termination events. This feedback mechanism enables higher layers to perform service management, QoS optimization, and coordination with network entities while maintaining clear information flow and manageable processing complexity through structured notification procedures.
Data Source
AI summary
Provided is a terminal apparatus for communicating with a base station apparatus. The terminal apparatus includes a receiver configured to receive an RRC message including configuration information of a multicast broadcast service (MBS) from the base station apparatus, and a processing unit. The configuration information of the MBS includes MBS session information. The MBS session information includes PDU session information. The processing unit releases a radio bearer for the MBS used for reception of the MBS session, based on stop of the reception of the MBS session by the terminal apparatus, and performs processing of notifying a higher layer of a part or all of the MBS session information.