CSI-RS Parameter Configuration for Accurate Channel State Information
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Solution Overview
Problem
Existing methods for obtaining channel state information (CSI) using multiple CSI-RSs are inefficient when parameters and transmitting orders are not specified, leading to inconsistent performance and accuracy issues.
Innovation Solution
Implementing a method for determining and specifying the parameters and transmitting orders of CSI-RSs, using preset rules and higher-layer signaling to ensure accuracy in CSI information and CSI-RSs are determined and transmitted in a consistent manner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple CSI-RSs are configured with different parameters and no transmitting order is specified, then the terminal can measure CSI-RSs to obtain CSI information, but the CSI acquisition becomes inefficient and inaccurate due to parameter inconsistencies and undefined measurement sequence
Solution Approach 1:
The patent applies parameter changes by establishing a standardized set of parameters for CSI-RS configuration, including power parameters, time-domain parameters, and frequency-domain parameters. By changing from unstandardized parameter configurations to standardized parameters with defined relationships, the system achieves consistent and accurate CSI measurement across different CSI-RS configurations.
Solution Approach 2:
The patent implements preliminary action by pre-defining the transmitting order of multiple CSI-RSs before the actual measurement process. The network-side device determines and signals the transmitting order in advance, allowing the terminal to follow a predetermined sequence for measuring CSI-RSs, thereby avoiding confusion during measurement and ensuring accurate CSI information acquisition.
2Productivity
If no transmitting order is specified for multiple CSI-RSs, then the terminal can measure CSI-RSs flexibly, but the CSI acquisition efficiency decreases due to inconsistent measurement sequences
Solution Approach 1:
The patent applies preliminary action by pre-determining and signaling the transmitting order of CSI-RSs before measurement. The network-side device calculates and indicates the transmitting order based on configuration information, ensuring that all terminals follow the same measurement sequence. This preliminary arrangement guarantees measurement consistency and improves CSI acquisition efficiency by eliminating uncertainties during the measurement process.
Solution Approach 2:
The patent implements feedback mechanisms where the network-side device provides configuration information and transmitting order indications to the terminal. The terminal measures CSI-RSs according to the indicated order and feeds back CSI information. This feedback loop ensures that the measurement process is both efficient and reliable, as the terminal follows a standardized sequence confirmed by network configuration.
3Adaptability or versatility
If multiple parameters are configured for CSI-RSs without standardized relationships, then the system can accommodate various scenarios, but the terminal cannot accurately determine which parameters to use for CSI calculation
Solution Approach 1:
The patent applies parameter changes by establishing standardized relationships between different parameters of CSI-RSs. Specifically, it defines relationships between power parameters, time-domain parameters, and frequency-domain parameters. These standardized relationships allow the terminal to accurately determine which parameters to use for CSI calculation while maintaining the ability to accommodate various configuration scenarios through the standardized framework.
Data Source
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AI summary
This application pertains 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.