Dynamic SFN Area Configuration for MBMS Resource Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current MBMS service configurations in wireless communication networks, such as those using static SFN areas, lack flexibility and efficiency in resource allocation, leading to resource wastage and increased system complexity due to inadequate user location awareness and mobility tracking, especially when handling mixed cell environments with both MBMS and unicast services.
Innovation Solution
Implement a dynamic SFN area configuration method based on real-time user location tracking, channel condition reports, and interference levels, allowing for adaptive expansion and contraction of SFN areas, and prioritization of MBMS services to optimize resource allocation and reduce signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If static O&M configured SFN is used, then SFN area coverage is ensured, but resource waste increases and flexibility is reduced
Solution Approach 1:
The patent implements dynamic SFN area configuration where the SFN area is adjusted based on real-time user distribution and service requirements. Instead of using a fixed static configuration, the system dynamically expands or contracts the SFN area to match actual user locations, ensuring coverage where needed while avoiding resource waste in areas without users.
Solution Approach 2:
The system changes the SFN area parameters dynamically based on user distribution statistics and service requirements. The SFN area configuration is modified by changing key parameters such as the set of synchronized cells and transmission resources, allowing the system to adapt to varying user locations and service demands without wasting resources.
2Area of stationary object
If static O&M configured SFN is used, then coverage area is maintained, but system flexibility deteriorates
Solution Approach 1:
The patent makes the SFN area configuration dynamic by continuously monitoring user distribution and adjusting the SFN area accordingly. The system can expand coverage to new areas when users are detected and contract when areas become unused, providing both comprehensive coverage and high flexibility to adapt to changing service requirements.
Solution Approach 2:
The system uses feedback from user distribution statistics and service requirements to continuously adjust the SFN area configuration. By monitoring user locations and service demands, the system receives feedback that drives dynamic reconfiguration of the SFN area, ensuring both adequate coverage and flexibility.
3Reliability
If SFN area is over-dimensioned, then cell edge performance is compensated, but resource allocation efficiency decreases
Solution Approach 1:
The patent applies local quality by providing enhanced SFN coverage specifically in areas where users are located, rather than uniformly over-dimensioning the entire SFN area. The system identifies user locations and configures SFN resources locally in those specific areas, ensuring cell edge performance where needed while maintaining high resource allocation efficiency by avoiding waste in user-free areas.
4Productivity
If dynamic SFN configuration is implemented, then resource utilization improves, but system complexity increases
Solution Approach 1:
The patent implements self-service by enabling the SFN configuration system to automatically adjust itself based on user distribution statistics and service requirements. The system autonomously performs SFN area expansion, contraction, and resource allocation without requiring manual intervention, thereby improving resource utilization while managing complexity through automation rather than manual processes.
Data Source
AI summary
A method and apparatus of resource management for multimedia broadcast multicast services (MBMS) are disclosed. A wireless transmit/receive unit (WTRU) sends a measurement report and an MBMS reception performance report to a network. Single frequency network (SFN) area change may be made based on cell reselection information, WTRU macro-diversity MBMS reception performance, neighbor cell signal strength reported by a WTRU, interference level measured by the WTRU, a number of WTRUs in a cell, service priority, WTRU class, WTRU mobility trend, WTRU location to a cell center, WTRU MBMS reception interference level, etc. The MBMS service on/off decision and/or point-to-point (PTP) to point-to-multipoint (PTM) switching may be made based on a channel condition of a WTRU. The channel condition may be determined based on whether the WTRU is in in-sync or out-of-sync in MBMS reception, consecutive negative acknowledgements (NAKs) within a certain time window, measured pathloss from a reference channel, etc.