SRS Power Control Configuration for 5G Wireless Devices
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Solution Overview
Problem
The existing power control framework for Sounding Reference Signals (SRS) in 5G NR systems faces ambiguities when SRS resources are shared among multiple SRS resource sets, leading to complex and potentially inconsistent power control mechanisms.
Innovation Solution
The solution involves configuring network nodes and wireless devices to manage SRS power control by associating power control with individual SRS resources rather than SRS resource sets, prohibiting shared SRS resources between sets, and applying conditions or priority rules to ensure unambiguous power control, such as transmitting at a single power level if values match or using the highest power value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If SRS resources are shared among multiple SRS resource sets, then resource utilization efficiency is improved, but power control ambiguity increases
Solution Approach 1:
The patent segments the power control configuration by associating it with individual SRS resources rather than SRS resource sets. This allows each SRS resource to have its own power control parameters (p0, alpha, pathlossReferenceRS), enabling unambiguous power control even when resources are shared across multiple sets. The segmentation resolves the contradiction by maintaining resource sharing benefits while eliminating power control ambiguity through resource-level configuration.
2Device complexity
If power control is configured at SRS resource set level, then configuration complexity is reduced, but power control precision deteriorates
Solution Approach 1:
The patent introduces a new dimension of configuration by implementing power control parameters at the SRS resource level rather than the SRS resource set level. This dimensional shift from set-level to resource-level configuration enables precise power control for each individual resource while maintaining manageable overall system complexity through standardized parameter structures.
3Adaptability or versatility
If multiple power control values are allowed for shared SRS resources, then adaptability to different scenarios is improved, but system reliability deteriorates due to ambiguity
Solution Approach 1:
The patent applies local quality by assigning specific power control parameters to each individual SRS resource based on its local requirements. Each SRS resource can have customized p0, alpha, and pathlossReferenceRS values tailored to its specific scenario needs, while the overall system maintains reliability through this localized, unambiguous configuration approach rather than allowing multiple conflicting power control values for shared resources.
Data Source
AI summary
Methods and apparatuses are disclosed for restricting SRS power control configurations. In one embodiment, a method implemented in a wireless device, WD, is provided. The method includes obtaining at least a first sounding reference signal, SRS, resource set configuration for a first SRS resource set, the first SRS resource set configuration corresponding to a first SRS transmission power value; obtaining at least a second SRS resource set configuration for a second SRS resource set, the second SRS resource set configuration corresponding to a second SRS transmission power value; and determining a power level to transmit an SRS on at least one SRS resource associated with at least one of the first SRS resource set and the second SRS resource set.