Sounding Reference Signal Transmission Control via Channel Access Procedure
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently performing wireless signal transmission and reception processes, particularly in multiple access systems where resources such as bandwidth and transmission power need to be shared among multiple users.
Innovation Solution
A method and apparatus for controlling uplink transmission in a wireless communication system, specifically involving the reception of sounding reference signal (SRS) configuration information, performing a clear access procedure (CAP) for SRS transmission based on this information, and determining whether to perform SRS transmission in a specific symbol or drop it based on a reference value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SRS transmission is performed in all configured symbols, then channel sounding coverage is maximized, but resource waste occurs when channel is busy
Solution Approach 1:
The patent applies dynamics by making the SRS transmission configuration adaptive rather than static. The network dynamically configures multiple SRS symbol positions and quantities based on channel conditions, allowing the system to flexibly adjust between maximizing coverage and minimizing resource waste depending on the channel state. This is achieved through receiving first SRS configuration information indicating multiple SRS symbol positions and quantities, then selectively transmitting based on CAP results at different symbols.
2Measurement precision
If SRS transmission is performed in multiple symbols, then channel information accuracy is improved, but transmission overhead increases
Solution Approach 1:
The patent applies local quality by making different parts of the SRS transmission have different characteristics based on local channel conditions. Instead of uniformly transmitting SRS in all symbols, the system transmits SRS with specific quantities at specific symbol positions where channel conditions warrant measurement, thereby achieving accurate channel information where needed while reducing overhead elsewhere. The network configures different SRS quantities at different symbol positions based on local channel quality requirements.
3Reliability
If CAP is performed for each symbol, then transmission reliability is improved, but processing complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the SRS transmission process into independent symbol-level units, each with its own CAP procedure. Instead of performing a single complex CAP for the entire SRS transmission, the system performs simpler, independent CAP checks at each configured symbol position. This segmentation allows the UE to make discrete transmission decisions at each symbol based on current channel conditions, improving reliability through multiple checkpoints while reducing overall processing complexity by breaking down the problem into manageable segments.
Data Source
AI summary
The present invention relates to a wireless communication system, and specifically, to a method and a device for the method, the method comprising: a step for receiving SRS configuration information; a step for performing a CAP for SRS transmission for each symbol, starting from the first symbol among a plurality of symbols, on the basis of the SRS configuration information; and a step for performing an SRS transmission process on the basis of a successful CAP in the Mth symbol among the plurality of symbols, wherein the SRS transmission is performed on the Mth symbol among the plurality of symbols on the basis of M being equal to or less than a reference value, and the SRS transmission is canceled even in all of the symbols after the Mth symbol among the plurality of symbols on the basis of M being greater than the reference value.