Synchronization Scheduling Method for MBSFN Networks
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Solution Overview
Problem
The Multicast Broadcast Single Frequency Network (MBSFN) is disrupted and its condition is destroyed due to different scheduling transmission time intervals acquired by multiple lower layer network elements, leading to interference and inconsistent service delivery in MBMS services.
Innovation Solution
A synchronous scheduling method where an appointed network element determines the scheduling transmission time interval based on the length of the synchronization sequence and Time Division Multiplexing period, and communicates this interval to all lower layer network elements, ensuring they perform scheduling processing uniformly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If each lower layer network element independently determines scheduling transmission time interval, then each network element can optimize its own scheduling, but the MBSFN condition is disrupted and interference occurs due to inconsistent scheduling among network elements
Solution Approach 1:
An appointed network element is designated as an intermediary to determine and distribute the scheduling transmission time interval to all lower layer network elements. This mediator approach ensures that all network elements use consistent scheduling parameters, maintaining MBSFN condition integrity while still allowing for optimized scheduling through the coordinated determination process.
2Reliability
If an appointed network element centrally determines the scheduling transmission time interval, then consistency and MBSFN condition are maintained, but the system complexity increases due to coordination requirements
Solution Approach 1:
The appointed network element that centrally determines the scheduling transmission time interval also autonomously transmits this interval to other lower layer network elements. This self-service approach reduces system coordination complexity by eliminating the need for separate coordination mechanisms, as the appointed element independently manages both determination and distribution of scheduling parameters.
Data Source
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AI summary
A synchronous scheduling method is provided. The method comprises: an appointed network element determining scheduling transmission time interval of a service according to length of a synchronization sequence and time division multiplexing period of the service, and sends the determined scheduling transmission time interval to multiple lower layer network elements (S302); the multiple lower layer network elements execute the scheduling processing on the data packets of the service according to the scheduling transmission time interval (S304). Applying the present invention could avoid resulting in disturbance to the MBSFN network and destruction to the MBSFN condition.