CSI reporting method and terminal equipment

Abstract

The invention discloses a CSI reporting method and a terminal device. The method comprises the steps that the terminal device receives M CSI reporting configurations issued by a base station, configurations of first CSI-RS resources associated with each CSI reporting configuration, and first signaling; For a first CSI-RS resource associated with any CSI reporting configuration, the terminal devicedetermines a second CSI-RS resource corresponding to the CSI reporting configuration according to the first signaling; The terminal device configures a corresponding first CSI-according to each CSI report, determines the priority order of the M CSI reporting configurations by using the RS resources and the second CSI-RS resources; The terminal device sends a CSI report to the base station according to the priority order; The method is used for solving the problem that a CSI report reported by current terminal equipment is incomplete, downlink resource scheduling of the UE is limited by a basestation, and the utilization rate of downlink resources is reduced.

Description

technical field [0001] The present application relates to the field of information technology, and in particular to a method for reporting CSI and a terminal device. Background technique [0002] Wireless channel conditions are usually constantly changing, for example, UE moves from an area with good channel conditions to an area with poor channel conditions; or UE moves on a street with tall buildings on both sides, then the street along the direction of signal propagation The signal will increase, while on the street perpendicular to the direction of propagation the signal will decrease. In order to better adapt to changes in the wireless channel, the base station sends a channel state information reference signal (channel state information-RS, CSI-RS) to the UE, and each CSI-RS will be carried on a specific time-frequency resource, that is, CSI-RS RS resource (CSI-RS resource). The UE can report the channel state to the base station through channel state information (Ch...

AI Technical Summary

Problems solved by technology

[0005] In addition, because there may be insufficient CSI resources, currently the UE will no longer report the CSI report corresponding to the low-priority CSI reporting configuration according to the size of the CSI resource and the existing priority rules, but some of the high-priority CSI reported The CSI report corresponding to the reporting configuration may be incomplete due to the hole punching problem. Because the CSI report corresponding to the high-priority CSI reporting configuration obtained by the base station is incomplete, through these incomplete CSI reports, the base station will The UE's downlink resource scheduling will be limited, reducing the utilization of downlink resources

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