Multi-Panel SRS Transmission for Wireless Systems
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently transmitting and receiving sounding reference signals (SRS) due to limitations in handling increased data traffic, user demand for higher data rates, and the need for advanced technologies like dual connectivity and massive MIMO, which require improved methods for downlink channel state information acquisition.
Innovation Solution
A method for a multi-panel UE to transmit SRS by configuring SRS resource sets for each panel based on UE capability information, allowing simultaneous transmission across multiple panels, with configuration information provided through UE capability reporting and SRS resource management, minimizing inter-beam interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If SRS resource sets for multiple panels are configured to enable simultaneous transmission, then the downlink channel state information acquisition capability is improved, but the device complexity increases due to multi-panel configuration management
Solution Approach 1:
The patent divides the SRS transmission system into multiple independent panels, where each panel has its own SRS resource set configuration. This segmentation allows the UE to manage complex multi-panel operations by treating each panel as a separate entity with dedicated resources, thereby improving channel state information acquisition while maintaining manageable complexity through modular configuration.
2Productivity
If SRS transmission is performed simultaneously across multiple panels, then the transmission efficiency is improved, but inter-beam interference increases
Solution Approach 1:
The patent applies local quality by configuring different SRS resource parameters (such as time-frequency resources, spatial relations, and transmission comb values) for different panels. This allows each panel to transmit SRS with optimized local characteristics that minimize interference with other panels while maintaining high transmission efficiency. The base station can then interpret these panel-specific configurations to accurately measure channel state information without interference contamination.
3Adaptability or versatility
If UE capability information regarding panel configuration is reported, then the adaptability of the system is improved, but the signaling overhead increases
Solution Approach 1:
The patent implements partial action by reporting UE capability information selectively - only the essential panel-related capabilities are reported (such as the number of panels, panel-specific SRS transmission capability, and panel switching capability). This partial reporting approach provides sufficient adaptability for the network to configure multi-panel operations while avoiding excessive signaling overhead by omitting redundant capability details that are not necessary for SRS transmission management.
Data Source
AI summary
A method for transmitting, by a terminal, a sounding reference signal (SRS) in a wireless communication system, according to one embodiment of the present specification, comprises the steps of: transmitting UE capability information related to a sounding reference signal (SRS) for downlink channel state information acquisition (DL CSI acquisition); receiving configuration information related to transmission of the SRS; and transmitting the SRS.