Closed-Loop SRS Power Control with Separate PUSCH Adjustment States
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing power control for sounding reference signals (SRS) and physical uplink shared channel (PUSCH) signals, leading to suboptimal performance in wireless networks.
Innovation Solution
Implementing closed loop power control mechanisms that allow for independent or differentiated power control adjustment states for SRS and PUSCH based on radio resource control (RRC) configurations, enabling more precise power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single shared power control adjustment state is used for both SRS and PUSCH, then device complexity is reduced, but power control precision and signal quality optimization are compromised
Solution Approach 1:
The patent divides the single shared power control adjustment state into separate dedicated states: a first power control adjustment state for SRS and a second power control adjustment state for PUSCH. This segmentation allows independent optimization of power control parameters for each signal type, resolving the contradiction by sacrificing minimal complexity increase to gain significant precision improvement in power control adjustment.
2Measurement precision
If differentiated power control adjustment states are implemented for SRS and PUSCH, then power control precision and signal quality are improved, but device complexity increases
Solution Approach 1:
The patent implements separate power control adjustment states for SRS and PUSCH, allowing independent control and optimization of power parameters for each signal type. This segmentation enables precise power control tailored to the specific requirements of each signal, justifying the moderate increase in device complexity through significant performance benefits.
Solution Approach 2:
The patent applies different power control adjustment states with distinct parameters (such as different path loss reference values and adjustment coefficients) specifically optimized for each signal type. This local quality approach ensures that each signal receives customized power control parameters that maximize its performance characteristics.
3Reliability
If path loss reference values are optimized for each signal type, then signal quality and power control effectiveness are improved, but configuration complexity increases
Solution Approach 1:
The patent assigns different path loss reference values specifically optimized for each signal type (SRS and PUSCH). These dedicated reference values enable accurate power control tailored to the propagation characteristics and requirements of each signal, improving reliability while managing configuration complexity through structured organization.
Solution Approach 2:
The patent modifies power control parameters including path loss reference values, adjustment coefficients, and target power levels for each signal type. These parameter changes enable optimized power control performance for SRS and PUSCH, balancing improved signal quality with manageable configuration complexity through systematic parameter management.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration for closed loop power control. The UE may transmit a sounding reference signal (SRS) using a value of an SRS power control adjustment state that is the same or different from a value of a physical uplink shared channel power control adjustment state based at least in part on the configuration comprising a closed loop indication or being a radio resource control configuration. Numerous other aspects are described.