MBMS Bearer Announcement via Existing Bearer
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Solution Overview
Problem
Current MBMS bearer activation and service announcement processes in group communications systems are time-consuming and inefficient, especially in dynamic environments, leading to suboptimal use of MBMS capacity.
Innovation Solution
A method and control node that activate a new MBMS bearer and announce its identity and complementary service announcement information on an already announced MBMS bearer, allowing for efficient and real-time service announcements without requiring client nodes to switch to active mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional service announcement procedure is used, then client nodes can receive complete service information, but the process is time-consuming and inefficient
Solution Approach 1:
The service announcement is segmented into two parts: mandatory information (MBMS bearer identity, IP address, ports, protocols, codecs) and optional information (service area, scheduling, error correction). By segmenting the announcement, the system can deliver essential service information quickly without requiring all optional parameters, thus reducing the time needed for service announcement while maintaining reliable information delivery.
Solution Approach 2:
The control node performs preliminary action by pre-configuring client nodes with mandatory service information parameters before actual service activation. This allows client nodes to be prepared in advance with essential information, enabling faster service deployment and reducing the overall time required for service announcement procedures.
2Reliability
If MBMS bearer activation and service announcement are performed before group call, then proper service setup is ensured, but MBMS capacity cannot be efficiently used due to time consumption
Solution Approach 1:
The system introduces dynamic service activation where MBMS bearers can be activated and announced on-demand rather than being pre-configured for all possible scenarios. The control node dynamically activates bearers and pushes service announcement information only when needed, allowing the system to adapt to changing group communication requirements in real-time, thus improving MBMS capacity utilization while ensuring complete service setup.
Solution Approach 2:
The system changes the parameters of service activation by allowing flexible, on-demand bearer activation with dynamic parameter assignment. Instead of fixed pre-configured parameters, the control node assigns parameters dynamically based on actual service needs, enabling efficient MBMS capacity utilization while maintaining complete service setup through parameter flexibility.
3Loss of information
If client nodes monitor broadcast bearer continuously, then service information can be received, but radio access network nodes bear heavy burden
Solution Approach 1:
The control node performs self-service by autonomously pushing service announcement information to client nodes without requiring continuous client node initiation or monitoring. The control node actively manages the service announcement process, transmitting mandatory information parameters to client nodes on-demand, thereby reducing the burden on radio access network nodes while ensuring service information reception.
Solution Approach 2:
The control node acts as an intermediary between the MBMS system and client nodes, centralizing the service announcement function. Instead of client nodes continuously monitoring broadcast bearers and imposing burden on radio access network nodes, the control node mediates by pushing service information selectively to interested client nodes, thus reducing network burden while maintaining information delivery.
Data Source
AI summary
There is provided mechanisms for multimedia broadcast multicast service (MBMS) bearer handling in a group communications system. A method is performed by a control node. The method comprises obtaining a need for a new MBMS bearer to be activated. The method comprises activating the new MBMS bearer. The method comprises announcing MBMS bearer identity and complementary service announcement information of the new MBMS bearer on an already announced MBMS bearer, thereby announcing the new MBMS bearer.