MBMS Interest Indication Control via SIB Verification
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Solution Overview
Problem
Existing wireless communication systems face issues with faulty operations and radio resource wastage when user equipment (UE) transmits multimedia broadcast and multicast service (MBMS) interest indication messages to eNodeBs that do not support MBMS, leading to incorrect UE and eNodeB operations.
Innovation Solution
A method where the UE transmits an MBMS interest indication message only after obtaining a predetermined system information block (SIB) from the base station, which includes information related to MBMS continuity, allowing controlled and efficient MBMS interest indication messaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE transmits an MBMS interest indication message to an eNodeB not supporting MBMS, then the UE can indicate its interest in MBMS service, but faulty operations occur in the eNodeB and radio resources are wasted
Solution Approach 1:
The UE performs preliminary verification by checking whether the eNodeB supports MBMS service before transmitting the MBMS interest indication message. This preliminary action prevents the harmful effect of transmitting messages to incompatible eNodeBs, thereby avoiding faulty operations and radio resource wastage while maintaining MBMS operation reliability
2Ease of operation
If the UE transmits MBMS interest indication messages without verification, then the UE can freely indicate MBMS interest, but radio resources are wasted due to unnecessary transmissions
Solution Approach 1:
The system implements feedback mechanism where the UE verifies eNodeB MBMS support status before transmitting interest indication messages. This feedback-based verification ensures that MBMS interest indication messages are only transmitted when appropriate, preventing radio resource wastage while maintaining operational freedom
3Device complexity
If the existing wireless communication system only transmits MBMS interest indication messages without additional verification mechanisms, then the system maintains simplicity, but faulty operations occur when eNodeBs do not support MBMS
Solution Approach 1:
A preliminary verification step is added to the existing simple system structure, where the UE checks eNodeB MBMS support capability before transmitting MBMS interest indication messages. This minimal addition maintains system simplicity while significantly improving eNodeB operation reliability by preventing incompatible transmissions
Data Source
AI summary
A method for receiving a multimedia broadcast multicast service (MBMS) by a user equipment (UE) in a wireless communication system; the UE therefore; a method for transmitting an MBMS by a base station (BS) in a wireless communication system; and the BS therefore are discussed. The method for receiving an MBMS by a UE according to one embodiment includes transmitting one or more system information blocks (SIBs); receiving a first MBMS interest indication message indicating whether MBMS reception is prioritized above unicast reception, when a predetermined SIB related to MBMS service continuity is included in the one or more SIBs; and receiving a second MBMS interest indication message according to a change of priority between the MBMS reception and the unicast reception.