Uplink SRS Power Control with Shared TCI State Configuration
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Solution Overview
Problem
The transmission power control method for uplink signals in future radio communication systems, such as NR, is unclear, leading to potential reductions in communication quality and throughput.
Innovation Solution
A terminal that includes a receiving section to receive configuration related to a Transmission Configuration Indication (TCI) state and a first sounding reference signal (SRS) transmission power parameter, with a control section performing transmission power control based on the indicated parameter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a TCI state is applied to multiple types of signals including SRS, then the configuration flexibility and adaptability are improved, but the transmission power control clarity deteriorates
Solution Approach 1:
The patent segments the power control parameter configuration by signal type. Specifically, it introduces a first power control parameter for PUCCH and a second power control parameter for SRS, even when both signals share the same TCI state. This segmentation ensures that each signal type has its own dedicated power control parameters, maintaining clarity in power control methods while preserving the flexibility of TCI state sharing across multiple signal types.
2Adaptability or versatility
If TCI state configuration is extended to multiple signal types, then the system versatility is improved, but the power control parameter management complexity increases
Solution Approach 1:
The patent applies local quality by assigning different power control parameter characteristics to different signal types. For PUCCH, it uses a first power control parameter set, while for SRS, it uses a second power control parameter set. This localized differentiation in parameter management simplifies the overall complexity by providing clear, signal-specific rules rather than requiring complex universal management mechanisms.
Data Source
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AI summary
A terminal according to one aspect of the present disclosure includes a receiving section that receives a configuration related to a Transmission Configuration Indication (TCI) state applicable to a plurality of signals and a first sounding reference signal (SRS) transmission power parameter associated with the TCI state indicated with absolute power, and a control section that performs transmission power control for an SRS, based on the first SRS transmission power parameter. According to one aspect of the present disclosure, power for a UL signal can be appropriately controlled.