5G SRS Puncturing Units for Efficient Comb Pattern Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The 5G wireless communication standard requires enhanced spectral efficiency, reduced latency, and improved signaling efficiency, which existing technologies have not adequately addressed, particularly in handling radio resource control channels and sounding reference signals.
Innovation Solution
The implementation of puncturing units for sounding reference signal (SRS) comb patterns with cyclic shifting to optimize SRS transmission, allowing for more efficient use of frequency resources and reduced latency in 5G networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional SRS transmission methods are used, then coverage is provided, but spectral efficiency is insufficient for 5G requirements
Solution Approach 1:
The SRS transmission is segmented into multiple comb patterns (comb-2, comb-4, comb-8) with different cyclic shifts. Each comb pattern divides the frequency resources into separate groups, allowing the system to select appropriate segments based on channel conditions and spectral efficiency requirements, thereby improving overall spectral efficiency while maintaining coverage through diverse pattern selection
Solution Approach 2:
The system dynamically selects and applies different comb patterns and cyclic shifts based on real-time channel conditions and traffic requirements. This dynamic adaptation allows the SRS transmission to optimize spectral efficiency for current conditions while ensuring coverage is maintained through appropriate pattern selection, resolving the contradiction between efficiency and reliability
2Productivity
If existing radio resource control handling is used, then basic communication is maintained, but signaling efficiency is insufficient
Solution Approach 1:
The system pre-configures multiple comb patterns and cyclic shift values in advance through RRC signaling. This preliminary action allows the network to prepare efficient SRS transmission parameters before actual data transmission, improving signaling efficiency by avoiding real-time complex calculations while maintaining manageable RRC configuration complexity through standardized parameter sets
3Loss of time
If conventional SRS transmission is used, then basic functionality is provided, but latency is not reduced for 5G requirements
Solution Approach 1:
The system employs periodic SRS transmission with different comb patterns and cyclic shifts across multiple time instances. This periodic action with pattern variation allows the network to quickly acquire channel state information at multiple time points, reducing latency for channel estimation and scheduling decisions while maintaining operational simplicity through regular periodic transmission intervals
Solution Approach 2:
The system changes parameters such as comb size and cyclic shift values across different SRS transmissions to optimize performance. By varying these parameters periodically, the system reduces latency in adapting to changing channel conditions while keeping the transmission mechanism simple through standardized parameter adjustment rules defined in the RRC configuration
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) receives a sounding reference signal (SRS) resource configuration, the SRS resource configuration indicating at least a comb pattern for at least one SRS resource allocated to the UE and a puncturing unit for the comb pattern, wherein the comb pattern is divided into one or more puncturing units, wherein each puncturing unit comprises one or more time units of the comb pattern, and wherein each of the one or more time units comprises two or more symbols, and refrains from transmitting all SRS transmissions of the at least one SRS resource within a first puncturing unit of the one or more puncturing units based on a determination that one or more SRS transmissions of the at least one SRS resource within the first puncturing unit are to be dropped.