MBMS Control Channel Configuration for Wireless Terminal Battery Optimization
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Solution Overview
Problem
Current wireless communication systems, particularly in UMTS, face challenges in efficiently configuring and managing point-to-multipoint control channels for MBMS services, leading to suboptimal battery consumption and delayed data access due to inefficient transmission and reception of control information.
Innovation Solution
The method involves generating and transmitting configuration information, including a modification period, repetition period, SFN-MCCH-Offset, and number of transmission time intervals, from a radio network controller to mobile terminals to optimize the reading of MBMS control channels, allowing for discontinuous reception and reducing unnecessary data retrieval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the mobile terminal continuously monitors and reads the MBMS control channel to ensure timely access to service information, then the data access timeliness is improved, but the battery consumption increases
Solution Approach 1:
The patent implements discontinuous reception by configuring the mobile terminal to read the MBMS control channel only at specific periodic intervals defined by transmission time intervals (TTIs). Instead of continuous monitoring, the terminal reads the control channel at scheduled times (e.g., every 10ms, 20ms, or 40ms based on configuration), which significantly reduces battery consumption while still ensuring timely access to MBMS service information when it is actually transmitted.
2Reliability
If the mobile terminal reads the control channel at every opportunity to ensure no data is missed, then the reliability of data reception is improved, but the unnecessary data retrieval increases energy waste
Solution Approach 1:
The network side (radio network controller) performs preliminary configuration by providing the mobile terminal with specific reading timing parameters including transmission time interval configurations and offset values. This preliminary action allows the terminal to pre-calculate exactly when to read the control channel based on scheduled transmission times, ensuring reliable reception of actual data while avoiding unnecessary readings during periods when no data is transmitted.
3Loss of time
If the control information transmission uses frequent updates to ensure information freshness, then the information timeliness is improved, but the system complexity increases
Solution Approach 1:
The patent introduces dynamic and configurable transmission time interval parameters that can be adapted to different MBMS service requirements. The system allows flexible configuration of reading periods (e.g., 10ms, 20ms, 40ms) and offset values, enabling the network to optimize the balance between information freshness and resource consumption based on actual service needs. This dynamic configuration capability allows the system to adjust to different scenarios without increasing inherent complexity.
Data Source
AI summary
The present invention relates to a method for transmitting and receiving information for configuring a point-to-multipoint control channel in a wireless communication system. A network generates configuration information for configuring a point-to-multipoint control channel (MCCH) and transmits the configuration information to a mobile terminal. The configuration information comprises at least one of a modification period, a repetition period, a SFN-MCCH-Offset comprising an offset between a transmission of a first frame of a modification period and a system frame number (SFN) of a cell in which the configuration information is transmitted, and a number of transmission time intervals (TTIs) the mobile terminal will read at each beginning of a repetition period.