MBMS Notification Indicator for Power-Efficient Wireless Reception
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Solution Overview
Problem
Current MBMS technologies, particularly in 3GPP Release 6 and 7, fail to meet the increasing demand for mobile TV services due to limitations in service performance and compatibility with new SAE/LTE systems, necessitating an improved notification mechanism for efficient multimedia broadcast/multicast service delivery.
Innovation Solution
A method and device for MBMS reception in a wireless communication system using MBSFN transmission, where a notification indicator is activated in a predefined period, allowing user equipment to wake up only during this period to receive notifications, and subsequently judge if the service is subscribed to, ensuring efficient resource allocation and data reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If user terminal continuously detects notification indicators and receives MCCH messages to judge upcoming services, then service subscription accuracy is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic action by having the user terminal wake up only at predetermined periods (e.g., DRX cycles) to detect notification indicators, rather than continuously monitoring. The terminal receives transport blocks at scheduled intervals, extracts notification indicators, and only fully decodes MCCH messages when necessary, thereby reducing power consumption while maintaining service subscription accuracy through periodic checks.
2Reliability
If user terminal receives all transport blocks including control signaling to judge service subscription, then service selection accuracy is improved, but data reception efficiency deteriorates
Solution Approach 1:
The patent applies the extraction principle by having the user terminal extract and process only the notification indicator from the transport block header, which contains critical service information. The terminal uses this extracted indicator to determine whether to fully decode the MCCH message and receive the complete service data, thereby avoiding unnecessary data reception while maintaining accurate service selection through the extracted notification information.
3Reliability
If base station sends notification indicators in every transport block, then service notification completeness is improved, but network resource utilization deteriorates
Solution Approach 1:
The patent implements partial action by having the base station send notification indicators only at specific predetermined periods rather than in every transport block. The notification indicator is included in transport blocks at key intervals (e.g., at the beginning of DRX cycles), providing sufficient service notification information without excessive transmission. This approach maintains notification completeness for service subscription decisions while improving network resource utilization by avoiding redundant transmissions.
Data Source
AI summary
The present invention provides a method of receiving a multimedia broadcast/multicast service in a user equipment of a wireless communication system based on MBSFN transmission and a method of assisting the user equipment to receive the service in the corresponding base station; wherein the user equipment receives a transport block from the base station in a predefined period; and then judges whether a notification indicator in the transport block is activated, if so, then judges whether a service identification of a multimedia broadcast/multicast service subscribed to by the user equipment is included in a transport block including a control signaling in the transport block, if so, then receives the multimedia broadcast/multicast service. By implementing the present invention, a user terminal in IDLE mode only needs a predefined period such as a DRX period to wake up to receive the notification indicator to judge whether a new service will start without waking up at extra time.