Flexible SRS Resource Configurations for Frequency Hopping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face inefficiencies and rigid constraints in SRS resource utilization, limiting flexibility and effectiveness in SRS transmission configurations.
Innovation Solution
Enhanced SRS resource configurations are implemented, allowing for flexible parameters such as non-uniform grouping, partial frequency overlapping, and dynamic configurations, enabling SRS transmissions beyond traditional limitations, including support for up to 14 symbols and varied comb and cyclic shift values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional SRS resource configurations are used, then system simplicity is maintained, but SRS flexibility and resource utilization efficiency are limited
Solution Approach 1:
The patent introduces dynamic SRS configuration where parameters such as comb values, cyclic shifts, and frequency hopping patterns can be adjusted based on channel conditions and network requirements. The configuration is no longer fixed but can be dynamically modified through signaling mechanisms, allowing the system to adapt to varying operational conditions while maintaining manageable complexity through structured parameter sets.
Solution Approach 2:
The patent enables flexible modification of multiple SRS parameters including comb values (supporting values greater than 2), cyclic shift values, frequency hopping parameters, and repetition factors. These parameter changes allow the same SRS framework to accommodate diverse transmission scenarios without requiring fundamental system redesign, thereby improving flexibility while controlling complexity through standardized parameter definitions.
2Productivity
If traditional SRS configurations with limited symbols are used, then implementation simplicity is maintained, but SRS resource utilization efficiency is reduced
Solution Approach 1:
The patent extends SRS transmissions from traditional limited symbol durations to support up to 14 symbols by introducing additional time dimensionality. This extension is achieved through structured parameter sets that define multi-symbol configurations, allowing more comprehensive channel sounding opportunities while improving resource utilization efficiency through better time-domain exploitation.
Solution Approach 2:
The patent enables preliminary configuration of extended SRS parameters including future comb values, cyclic shifts, and frequency hopping patterns through advance signaling. This allows the UE to prepare and execute optimized SRS transmissions based on pre-configured parameters, improving resource utilization efficiency by ensuring optimal parameter selection before actual transmission occurs.
3Adaptability or versatility
If uniform SRS configurations are used across all resources, then system simplicity is maintained, but adaptability to different channel conditions is limited
Solution Approach 1:
The patent enables different SRS configurations to be applied to different SRS resources based on local channel conditions and specific transmission requirements. Each SRS resource can have customized comb values, cyclic shifts, and frequency hopping patterns tailored to its specific characteristics, allowing optimized performance for each local condition while managing complexity through structured parameter organization.
Solution Approach 2:
The patent segments the SRS configuration into distinct parameter sets that can be independently optimized and applied to different resource groups. By dividing the configuration management into modular parameter categories (comb values, cyclic shifts, frequency hopping, repetition), the system can selectively apply different configurations to different segments of SRS resources based on channel conditions, improving adaptability while controlling overall complexity.
4Measurement precision
If frequency hopping is disabled, then transmission simplicity is maintained, but frequency diversity and channel sounding accuracy are limited
Solution Approach 1:
The patent introduces flexible frequency hopping parameters that can be configured based on channel conditions and measurement requirements. The frequency hopping pattern can be dynamically adjusted through parameter changes in comb values and hopping indices, enabling enhanced channel sounding accuracy and frequency diversity without requiring complex hardware modifications, thereby improving measurement precision while managing configuration complexity.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. In some examples, a UE may receive an indication of a set of sounding reference signal (SRS) parameters corresponding to a set of SRS resources for transmitting SRSs, where the set of SRS resources may refer to frequency, or time, or both. In some examples, the SRS parameters may include, among other examples, a frequency allocation, a frequency overlap parameter, a number of allocated symbols, a comb value, a cyclic shift, a comb offset, a frequency hopping parameter, a repetition parameter, a symbol grouping parameter, or any combination thereof. The UE may determine an SRS configuration for the one or more SRSs based on the set of SRS parameters and transmit the one or more SRSs based on the configuration. In some examples, the SRS configuration includes a configuration for SRS frequency hopping, or SRS repetition, or both.