CSI-RS Reference Ordering for Accurate Channel State Information
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Solution Overview
Problem
Existing communication systems fail to accurately obtain channel state information (CSI) due to inconsistent CSI-RS configurations and undefined transmitting orders, leading to incorrect CSI feedback.
Innovation Solution
A method for a terminal to determine a first reference CSI-RS based on preset rules or network higher-layer signaling, and to establish a transmitting order for multiple CSI-RSs using configuration parameters, ensuring accurate CSI calculation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple CSI-RSs are configured for the terminal to measure, then the terminal can obtain CSI information for multiple time-domain units, but the CSI feedback becomes incorrect due to inconsistent configurations and undefined transmitting orders
Solution Approach 1:
The patent applies preliminary action by having the terminal determine a transmitting order for multiple CSI-RSs before performing measurements. The terminal identifies a first reference CSI-RS and establishes a predetermined transmitting order based on configuration information or default rules, ensuring that both terminal and network-side device process CSI-RSs in the same sequence. This preliminary ordering resolves the inconsistency problem and enables accurate CSI feedback.
2Productivity
If the terminal measures multiple CSI-RSs without a defined transmitting order, then CSI information for multiple time-domain units can be obtained, but the feedback becomes incorrect due to configuration inconsistencies
Solution Approach 1:
The patent implements feedback mechanisms where the terminal feeds back CSI information to the network-side device. By establishing a predetermined transmitting order and using configuration information from higher-layer signaling, the system ensures that the feedback process is reliable and consistent, resolving the issue of incorrect feedback due to undefined processing orders.
3Ease of operation
If no reference CSI-RS is determined, then the terminal can process all CSI-RSs, but accurate CSI calculation cannot be performed due to power parameter requirements
Solution Approach 1:
The patent extracts and identifies a first reference CSI-RS from the multiple CSI-RSs. This reference signal serves as the basis for obtaining power parameters, which are then used for calculating channel state information. By separating the reference function from the measurement function, the system achieves both ease of operation and measurement precision.
Data Source
AI summary
This application relates to the field of communication technologies, and discloses a method for obtaining channel state information, a terminal, and a network-side device. The method for obtaining channel state information in embodiments of this application includes: obtaining, by a terminal, a first parameter configured by a network-side device for each of K channel state information reference signals CSI-RSs, where K is an integer greater than 1; in a case that first parameters of the K CSI-RSs are not completely the same, determining, by the terminal, a first reference CSI-RS from the K CSI-RSs according to a preset rule or an indication of network higher-layer signaling; and obtaining, by the terminal, channel state information based on a power parameter associated with the first reference CSI-RS, where the power parameter is used for obtaining power information needed for calculating the channel state information.