MBMS Control Channel Scheduling via SFN Combining
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Solution Overview
Problem
Current MBMS systems lack robustness due to the inability to combine service specific and service scheduling information, leading to low efficiency and increased management complexity, especially in single-frequency network (SFN) environments where control and data channels are not multiplexed.
Innovation Solution
A scheduling method and device that configures service specific and service scheduling information separately to form an MBMS control channel (MCCH) control message, applying a single-frequency network combining scheme, which includes SFN level, SFN area level, and SFN area intersection level combinations, to improve system robustness and resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If service specific information and service scheduling information are transmitted separately without combining, then the transmission flexibility is maintained, but the system robustness deteriorates
Solution Approach 1:
The patent combines service specific information and service scheduling information into a single MCCH control message structure. This merging allows both types of information to be transmitted together through the same control channel, improving system robustness by ensuring reliable delivery of critical MBMS control information while reducing the complexity of managing separate transmission paths.
2Productivity
If control channels and data channels are transmitted separately, then the channel management is simplified, but the resource allocation efficiency deteriorates
Solution Approach 1:
The patent multiplexes the MCCH control channel with data channels by incorporating control information into the data transmission flow. This allows control and data channels to share the same resource allocation scheme and multi-cell coordination mechanism, improving resource allocation efficiency while maintaining manageable complexity through unified channel handling.
3Reliability
If SFN combining scheme is applied to all MBMS information, then the system robustness is improved, but the resource overhead increases
Solution Approach 1:
The patent applies the SFN combining scheme selectively only to the MCCH control message containing service specific and scheduling information, rather than to all MBMS transmissions. This localized application ensures robust control channel delivery where it is most critical, while avoiding unnecessary resource overhead in data transmission portions that do not require the same level of redundancy.
Data Source
AI summary
A scheduling method for multimedia broadcast/multicast service (MBMS) is provided according to the present invention, comprising steps of: configuring service specific information and service scheduling information separately from MBMS service data to form an MCCH control message of an MBMS control channel; and transmitting the MCCH control message and the MBMS service data to a receiving end, wherein the service specific information and the service scheduling information are applied with a single-frequency network combining scheme.