Type-2 Configured Grant L1 Updates for Reliable PUSCH Uplink
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Solution Overview
Problem
Current NR design limits the ability to modify or adjust Type-2 CG parameters such as repetition, beam/spatial relationship, and other L1 parameters once activated, hindering high reliability enhancements in scenarios like survival time.
Innovation Solution
Modifying L1 parameters for Type-2 CG resources using dynamic signaling, such as DCI, to adjust parameters like repetition, TCI state, priority indicator, and open-loop power control, allowing dynamic updates without RRC reconfiguration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dynamic adaptation of L1 parameters is implemented for configured grant resources, then resource allocation efficiency and latency are improved, but system complexity and processing overhead increase
Solution Approach 1:
The patent implements dynamic adaptation of L1 parameters (such as time resource allocation, frequency resources, and modulation schemes) based on real-time channel conditions and traffic requirements. The system transitions from static pre-configured parameters to dynamic parameter adjustment, allowing the gNodeB to modify L1 parameters on-the-fly to optimize resource allocation efficiency and reduce latency while managing the increased complexity through automated control mechanisms.
2Adaptability or versatility
If L1 parameters are modified for configured grant resources, then adaptability to changing conditions is improved, but signaling overhead and processing time increase
Solution Approach 1:
The patent employs preliminary configuration of L1 parameters through higher layer signaling (RRC signaling) before actual data transmission occurs. The gNodeB pre-configures a set of permissible L1 parameter values and adjustment rules, allowing the system to quickly adapt to changing conditions by selecting from pre-established options rather than configuring parameters from scratch, thus reducing real-time processing time while maintaining adaptability.
Solution Approach 2:
The system dynamically modifies L1 parameters such as time resource allocation, frequency resources, and modulation schemes based on real-time channel conditions and traffic requirements. The gNodeB can adjust these parameters on-the-fly to optimize resource allocation efficiency and reduce latency while managing the increased complexity through automated control mechanisms.
3Quantity of substance
If configured grant resources are used with dynamic L1 parameters, then spectral efficiency is improved, but compatibility with existing systems deteriorates
Solution Approach 1:
The patent designs the L1 parameter modification mechanism to be universally applicable across different configured grant configurations and network conditions. The gNodeB can dynamically adjust parameters while maintaining compatibility with existing UE capabilities and network configurations, allowing the system to achieve improved spectral efficiency without sacrificing backward compatibility through a unified parameter adjustment framework that works across diverse deployment scenarios.
Data Source
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AI summary
Apparatuses, methods, and systems are disclosed for modifying L1 parameters for CG resource. One apparatus (800) includes a processor (805) and a transceiver (825) that receives (1005) an RRC configuration for a UL Type-2 CG resource and further receives (1010) a first DCI to activate the UL Type-2 CG resource. Via the transceiver (825), the processor (805) performs (1015) a first PUSCH transmission on the activated UL Type-2 CG resource according to parameters configured by the RRC configuration and/or the first DCI. Via the transceiver (825), the processor (805) receives (1020) a second DCI that updates a L1 parameter for the activated UL Type-2 CG resource and performs (1025) a second PUSCH transmission on the activated UL Type-2 CG resources according to the L1 parameter updated by the second DCI.