Point-to-multipoint control channel selection for wireless services
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Solution Overview
Problem
Current point-to-multipoint service communications in wireless systems inefficiently manage control information for cell-specific and non-cell-specific services, leading to wasteful usage of radio resources due to inability to optimize signaling and scheduling according to service characteristics.
Innovation Solution
Selecting a point-to-multipoint control channel based on desired service reception, such as receiving control information on L1/L2 control channels for single-cell services or MBMS control channels for multi-cell services, and utilizing retransmission schemes and L1 combining techniques for efficient service delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single point-to-multipoint control channel is used for both cell-specific and non-cell-specific services, then device complexity is reduced, but radio resource efficiency deteriorates due to inability to optimize signaling for different service types
Solution Approach 1:
The patent segments the control channel into two distinct types: cell-specific point-to-multipoint control channels for cell-specific services and non-cell-specific point-to-multipoint control channels for non-cell-specific services. This segmentation allows each control channel to be optimized for its specific service type, improving radio resource efficiency while maintaining manageable device complexity through structured differentiation.
2Ease of operation
If control information is transmitted using a unified approach for all services, then ease of operation is improved, but productivity deteriorates due to wasteful radio resource usage
Solution Approach 1:
The patent applies local quality by configuring control channels with service-specific properties: cell-specific control channels use cell-specific scheduling and signaling formats optimized for local cell services, while non-cell-specific control channels use unified scheduling and signaling formats optimized for wide-area services. This allows each control channel to operate with locally optimized characteristics, improving overall productivity without sacrificing ease of operation.
3Loss of energy
If separate control channels are provided for cell-specific and non-cell-specific services, then radio resource efficiency is improved through optimized signaling, but device complexity increases
Solution Approach 1:
The patent implements universality by designing a control channel framework where both cell-specific and non-cell-specific control channels share common structural elements, signaling protocols, and management mechanisms. This multi-functionality allows the system to provide differentiated control channels for different service types while maintaining a unified management architecture, thereby improving radio resource efficiency without excessively increasing device complexity.
Data Source
AI summary
Among a plurality of point-to-multipoint control channels provided by a cell, a particular point-to-multipoint control channel is selected according to a preferred way of receiving the point-to-multipoint service. Control information related to the point-to-multipoint service is received through the selected point-to-multipoint control channel, and then the point-to-multipoint service is received according to the control information.