SRS Configuration Adaptation for Beamforming
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently configuring and managing SRS resources for user equipment (UE) in new radio access technologies, particularly in terms of beamforming capability and resource multiplexing, which affects communication reliability and latency.
Innovation Solution
A method for a user equipment (UE) to receive SRS configuration information from a base station, including the number of SRS resources, symbol positions, and multiplexing schemes, based on UE capability information, allowing adaptive SRS configuration for improved beam management and channel estimation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple SRS resources are configured for simultaneous transmission to enhance UL beam management, then beamforming capability is improved, but device complexity increases due to resource multiplexing management
Solution Approach 1:
The patent changes the parameter of SRS resource configuration by introducing a codebook-based approach where the UE reports its beamforming capability parameters (number of antenna ports, panels, TXRUs) to the gNB. The gNB then configures SRS resources based on these parameters, allowing adaptive adjustment of resource multiplexing schemes (TDM, FDM, or combined) to match UE capability while managing complexity through standardized parameter sets.
2Adaptability or versatility
If SRS configuration information is extensively detailed to cover all transmission parameters, then adaptability is improved, but information overhead increases
Solution Approach 1:
The patent applies preliminary action by having the UE report its beamforming capability parameters (antenna ports, panels, TXRUs) in advance through UE capability information. This pre-reporting allows the gNB to pre-determine the appropriate SRS resource configuration and multiplexing scheme, reducing the need for extensive back-and-forth signaling and minimizing overhead while maintaining adaptability.
Solution Approach 2:
The patent creates a universal SRS configuration framework where a single set of capability parameters from the UE can determine multiple aspects of SRS configuration (number of resources, multiplexing scheme, symbol allocation). This multi-functional approach allows one piece of capability information to drive various configuration decisions, reducing redundant signaling.
3Measurement precision
If SRS transmission uses more symbols per slot to increase beam sweeping coverage, then measurement precision is improved, but transmission time increases
Solution Approach 1:
The patent introduces dynamic adaptability in SRS configuration by allowing the gNB to adjust the number of SRS symbols and multiplexing schemes based on reported UE capability and current network conditions. The system can dynamically switch between TDM and FDM approaches, and adjust the number of symbols per slot, to achieve necessary beam management precision while minimizing time consumption based on real-time requirements.
Data Source
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AI summary
A method for receiving SRS configuration information by a terminal may comprise the steps of: receiving, from a base station, the SRS configuration information including information on the number of simultaneously transmissible SRS resources configured for the terminal; and performing SRS transmission on the basis of the SRS configuration information.