BM-SC Multiplexing MBMS Services in MBSFN Networks
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Solution Overview
Problem
Existing methods for multiplexing MBMS services in MBSFN networks lack centralized management of resource allocation, leading to inefficiencies in synchronization and radio resource utilization.
Innovation Solution
A method and system where the BM-SC determines which MBMS services to multiplex, estimates bandwidth requirements, prioritizes and reorders packet data based on QoS, and informs base stations to allocate and transmit radio resources effectively, ensuring synchronized transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If MBMS services are multiplexed in MBSFN without centralized management, then service delivery is enabled, but synchronization efficiency and radio resource utilization deteriorate
Solution Approach 1:
The BM-SC acts as an intermediary entity that centralizes the management of MBMS service multiplexing. It receives service information from multiple sources, determines multiplexing configurations, calculates bandwidth requirements, and coordinates with MCE and eNBs to ensure synchronized transmission. This intermediary role resolves the contradiction by providing centralized control (improving synchronization efficiency) while managing the complexity of resource allocation through a dedicated entity.
Solution Approach 2:
The BM-SC performs preliminary actions by pre-determining which MBMS services should be multiplexed together and pre-calculating their bandwidth requirements before actual transmission. This advance planning allows for optimized resource allocation and ensures synchronization is established beforehand, improving transmission efficiency while managing complexity through proactive rather than reactive control.
2Productivity
If bandwidth is allocated without prioritization, then all services can be transmitted, but radio resource utilization deteriorates when actual bandwidth exceeds requirements
Solution Approach 1:
The BM-SC dynamically changes the prioritization parameters of MBMS services based on actual bandwidth conditions. When total bandwidth requirements exceed available resources, the system adjusts transmission parameters by prioritizing certain services over others, modifying QoS parameters, and reordering packet transmission sequences. This allows efficient utilization of limited radio resources while ensuring critical services maintain adequate bandwidth.
Solution Approach 2:
The system implements partial prioritization where not all services receive equal treatment. When bandwidth is constrained, only the most critical services receive full bandwidth allocation, while less critical services receive reduced or deferred transmission. This partial action approach optimizes radio resource utilization by focusing resources on high-priority services rather than attempting to maintain equal service levels across all MBMS transmissions.
Data Source
AI summary
A method for multiplexing multiple MBMS services in an MBSFN is provided according to the present invention, comprising: at the beginning of a session, determining, by a BNA-SC, MBMS services to be multiplexed together; estimating, by the BM-SC, bandwidth requirement needed for multiplexing the MBMS services together and informing an MCE of the bandwidth requirement so as to assign radio resources by the MCE; receiving, by the BM-SC, packet data for the MBMS services to be multiplexed together, from a server; prioritizing, by the BM-SC, the MBMS services to be multiplexed together if the actual bandwidth that is occupied by the packet data for the MBMS services to be multiplexed together exceeds the bandwidth requirement; reordering, by the BM-SC, the packet data for the MBMS services to be multiplexed together according to the result of prioritization, and informing respective base stations in the MBSFN area of the result of reordering; and multiplexing, by respective base stations, the packet data for the MBMS services to be multiplexed together on radio resources assigned by the MCE and transmitting the multiplexed packet data according to the result of reordering informed by the BM-SC.