MBMS Control Information Consolidation on Single Component Carrier
Solution Overview
Problem
In multimedia broadcast multicast service (MBMS) for terminal devices supporting carrier aggregation, the load increases due to the need for each component carrier to transmit and acquire control information, leading to inefficiencies.
Innovation Solution
An apparatus and method that includes an acquisition unit to acquire specific information on a first component carrier to specify a physical multicast channel (PMCH) across multiple component carriers, reducing the load by transmitting MCCH scheduling information or MBSFN area configuration information on a single component carrier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control information for MBMS is transmitted on each component carrier, then the terminal device can acquire MBMS control information for each carrier, but the load on the terminal device increases due to acquiring control information from multiple carriers
Solution Approach 1:
The patent merges the control information transmission for multiple component carriers into a single component carrier. Specifically, the base station transmits MBMS control information (MCCH scheduling information or MBSFN area configuration information) on one designated component carrier that applies to multiple component carriers, allowing the terminal device to acquire all necessary control information from a single carrier rather than multiple carriers.
Solution Approach 2:
The patent makes a single component carrier serve multiple functions by having it transmit control information that governs multiple other component carriers. The designated component carrier becomes universal in its role, providing MBMS control information that is applicable across multiple carriers, thereby reducing the need for separate control information transmissions on each carrier.
2Adaptability or versatility
If control information is transmitted on each component carrier, then each carrier can independently support MBMS, but power consumption increases due to continuous monitoring of multiple carriers
Solution Approach 1:
The patent combines the control information monitoring requirement for multiple component carriers into a single monitoring task. The terminal device only needs to monitor one designated component carrier for MBMS control information, while the same control information applies to multiple component carriers, thereby significantly reducing power consumption associated with continuous monitoring.
Solution Approach 2:
The patent extracts the essential control information function from multiple component carriers and consolidates it into a single designated component carrier. By taking out the control information transmission function from each individual carrier and centralizing it on one carrier, the system reduces the monitoring burden and power consumption while maintaining the ability to support MBMS on multiple carriers.
Data Source
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AI summary
[Object] To make it possible to reduce the load related to MBMS for the terminal device supporting carrier aggregation. [Solution] There is provided an apparatus including an acquisition unit configured to acquire specific information used to specify a physical multicast channel (PMCH) of two or more component carriers including a first component carrier, and a control unit configured to control transmission of the specific information on the first component carrier.