Wireless Terminal Base Station SPS Control Channel Identification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing Semi-Persistent Scheduling (SPS) in LTE-based mobile communication systems can only configure one periodicity, limiting the control of multiple communication services.
Innovation Solution
A wireless terminal and base station configuration that uses identification information in a control channel to manage the activation and release of multiple periodic communication services, allowing for the distinction and control of multiple SPS services using fields like the HARQ process number or SPS Index.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If Semi-Persistent Scheduling (SPS) is used to reduce signaling overhead, then the number of PDCCH transmissions is reduced, but only one periodicity can be configured limiting control of multiple communication services
Solution Approach 1:
The patent segments the single SPS configuration into multiple independent SPS configurations, each identified by a unique SPS Index. This allows the system to maintain multiple periodic communication services simultaneously while keeping signaling overhead low, as each service can be independently activated and managed through dedicated SPS configurations rather than requiring continuous PDCCH transmissions for each service
2Adaptability or versatility
If dynamic scheduling is used to control multiple communication services, then adaptability is improved, but signaling overhead increases due to continuous PDCCH transmissions
Solution Approach 1:
The patent implements periodic action by establishing multiple Semi-Persistent Scheduling configurations with different periodicities for different communication services. Each service operates on its own periodic schedule defined by SPS periodicity parameters, allowing the system to maintain multiple services with reduced signaling overhead compared to continuous dynamic scheduling. The periodic nature of SPS eliminates the need for continuous PDCCH transmissions while supporting multiple services
3Adaptability or versatility
If multiple SPS services are configured with different periodicities, then communication flexibility is enhanced, but the system complexity increases
Solution Approach 1:
The patent introduces an SPS Index as an intermediary parameter to manage multiple SPS services. Each SPS configuration is uniquely identified by an SPS Index value, which serves as a mediator between the multiple periodic communication services and the control mechanism. This intermediary approach allows the system to handle multiple services with different periodicities in a structured manner, reducing the perceived complexity by providing a clear identification and management mechanism for each service
Data Source
AI summary
A communicating unit of a base station performs a plurality of periodic communication services with a wireless terminal. A communication control unit of the base station includes, in a control channel, identification information for distinguishing the periodic communication services one from the other to thereby allow the wireless terminal to control at least one of activation and release of each of the periodic communication services. A communicating unit of the wireless terminal performs the plurality of periodic communication services with the base station. A communication control unit of the wireless terminal controls at least one of the activation and the release of each of the periodic communication services using the identification information included in the control channel transmitted from the base station.