SRS Precoding via Multi-CSI-RS Association
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Solution Overview
Problem
Current communication systems with channel reciprocity feature low transmission performance due to the lack of comprehensive consideration of mutual influence among CSI-RS resources in determining precoding schemes for SRS transmission.
Innovation Solution
A method and apparatus where a network device sends configuration information to indicate a target SRS resource associated with multiple CSI-RS resources, allowing terminals to determine a precoding scheme that considers the mutual influence of these CSI-RS resources, thereby improving transmission performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a terminal determines precoding scheme based on a single CSI-RS resource, then the determination process is simple, but transmission performance is low
Solution Approach 1:
The patent combines multiple CSI-RS resources (K CSI-RS resources where K>1) to determine a single precoding scheme for SRS transmission. The terminal receives configuration information indicating a target SRS resource associated with multiple CSI-RS resources, and determines the precoding scheme by comprehensively considering channel state information from all K CSI-RS resources, thereby improving transmission performance through merged information.
Solution Approach 2:
The patent enables a single precoding scheme to serve multiple CSI-RS resources simultaneously. The determined precoding scheme is used for SRS transmission on the target SRS resource, which is associated with K CSI-RS resources, making the precoding scheme determination process multi-functional and improving overall system efficiency.
2Loss of information
If a target SRS resource is associated with only one CSI-RS resource, then the configuration is simple, but the precoding scheme cannot comprehensively consider mutual influence among multiple CSI-RS resources
Solution Approach 1:
The patent establishes an association between a target SRS resource and multiple CSI-RS resources (K>1). The terminal determines the precoding scheme by comprehensively considering channel state information from all K CSI-RS resources, ensuring complete channel state information is utilized while managing the complexity through standardized configuration information exchange.
Data Source
Figure 1~2A
Figure 2B~2C
Figure 3A~3B
AI summary
This application provides an information receiving method and apparatus, and an information sending method and apparatus. The method includes: sending configuration information, where the configuration information is used to indicate a target sounding reference signal SRS resource, the target SRS resource is associated with K channel state information reference signal CSI-RS resources, K is an integer greater than 1, and the K CSI-RS resources are used to determine a precoding scheme used for an SRS carried on the target SRS resource; and receiving the SRS carried on the target SRS resource. In this application, transmission performance is improved.