CSI reporting method and device, storage medium and user terminal

Abstract

Disclosed are a CSI reporting method and device, a storage medium and a user terminal. The method comprises: determining CSI information to be reported to N transmission points, the CSI information comprising N CRI parameter values, N RI parameter values, PMI parameter values of the N transmission points and CQI parameter values of the N transmission points; if the bit number of the CSI information is greater than a preset bearing bit number, sequentially discarding a part of parameter values in the CSI information according to a preset discarding sequence; and reporting the remaining part inthe CSI information to the N transmission points, wherein the N CRI parameter values are in one-to-one correspondence with the N transmission points, the N RI parameter values are in one-to-one correspondence with the N transmission points, the PMI parameter values of the N transmission points are in one-to-one correspondence with the N transmission points, and the CQI parameter values of the N transmission points are in one-to-one correspondence with the N transmission points. According to the scheme, the invention can better adapt to Multi-TRP scenes in 5G NR R16.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a CSI reporting method and device, a storage medium, and a user terminal. Background technique [0002] In the 5G New Radio (NR) technology R15 standard, the user terminal (User Equipment, UE) reports channel state information (Channel state information, CSI) to the network side (such as the base station) to inform the current channel conditions, so that The network side changes the transmission strategy to optimize scheduling. [0003] Specifically, a Type 1 (Type I) CSI reporting manner or a Type 2 (Type II) CSI reporting manner may be selected. Wherein, the parameters reported by Type I CSI may include Channel State Information-Reference Signal Resource Indicator (CRI), Rank Indicator (Rank Indicator, RI), Precoding Matrix Indicator (Pre-coding matrix indicator, PMI) and channel quality information (Channel Quality Information, CQI); the parameters repor...

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Problems solved by technology

[0005] However, the above discarding rules are only applicable to the case of a single transmission point (Transfer Point, TRP). UCI) contains the CSI feedback information of N TRPs, and the UE needs to report the CSI information to multiple TRPs

[0006] However, in the prior art, there is no setting of discarding rules for CSI information for the scenario of joint reporting of CSI information in Multi-TRP, resulting in the existing discarding rules not being able to adapt to the scenario of Multi-TRP in 5G NR R16

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