SCPTM Transmission Control via UE Interest Query
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Solution Overview
Problem
Current single-cell point-to-multipoint (SCPTM) wireless communication systems face inefficiencies in radio resource management, as they continue data transmission even when no user equipment (UE) is interested, leading to reduced radio efficiency.
Innovation Solution
The method involves an eNB querying the number of interested UEs for SCPTM services and dynamically controlling data transmission based on this information, allowing for the turning on or off of data transmission and feedback mechanisms, thereby improving radio efficiency by only maintaining transmission when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the MBMS session continues data transmission until session stop, then the service availability is maintained, but the radio efficiency is reduced because transmission continues even when no UE is interested
Solution Approach 1:
The eNB performs a query procedure to obtain information about the number of UEs interested in the SCPTM service. This feedback mechanism allows the eNB to adjust data transmission based on actual UE interest, stopping transmission when no UEs are interested while maintaining service availability when UEs are present.
Solution Approach 2:
The system dynamically controls data transmission by transitioning between active and inactive states based on UE interest. The eNB can turn on data transmission when interested UEs are detected and turn it off when no UEs are interested, making the transmission behavior adaptive rather than static.
2Loss of energy
If the eNB performs query procedure to obtain UE information, then the radio efficiency is improved, but the device complexity increases due to additional signaling
Solution Approach 1:
The query procedure is integrated into the existing MBMS session management framework. The same signaling mechanisms used for service announcement, session start, and session stop are also utilized for the query procedure, allowing the system to perform multiple functions (service management and UE interest detection) using a unified signaling approach.
3Loss of energy
If the eNB turns off data transmission when no UE is interested, then the radio efficiency is improved, but the service responsiveness decreases due to additional query procedures
Solution Approach 1:
The eNB performs the query procedure at the session start and can perform additional queries at appropriate intervals. This preliminary action of checking UE interest before initiating continuous transmission avoids unnecessary transmission activation, while the timing of queries is optimized to minimize impact on service responsiveness.
Data Source
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AI summary
A method of single-cell point-to-multipoint (SCPTM) transmission for a network in a wireless communication system is disclosed. The method comprises performing a query procedure to obtain information associated with a number of mobile device interesting or receiving at least a SCPTM service, and determining to turn on/off data transmission for the at least a SCPTM service, turn on/off feedback procedure for the at least a SCPTM service according to the obtained information, or to provide the obtained information to a group communication service application server (GCS AS).