METHOD AND DEVICE FOR REPORTING CHANNEL STATE INFORMATION IN WIRELESS COMMUNICATION SYSTEM

摘要

The present invention relates to a wireless communication system and, more specifically, to a method and device for reporting channel state information (CSI). The method by which a terminal in a wireless communication system reports CSI, according to one embodiment of the present invention, can comprise the steps of: receiving a reference signal from a base station; and reporting, to the base station, the CSI generated by using the reference signal. The CSI can include at least one first domain precoding matrix indicator (PMI) indicating a first precoding matrix for a first domain of a two-dimensional antenna structure and at least one second domain PMI indicating a second precoding matrix for a second domain of the two-dimensional antenna structure. A reporting period of the at least one first domain PMI can be shorter than a reporting period of the at least one second domain PMI.

主权项

1. A method for reporting channel state information (CSI) by a user equipment (UE) in a wireless communication system, the method comprising:
receiving a reference signal from a base station (BS); and reporting the CSI generated using the reference signal to the BS, wherein the CSI comprises: one or more first domain precoding matrix indicators (PMIs) indicating a first precoding matrix for a first domain of a 2D antenna structure; and one or more second domain PMIs indicating a second precoding matrix for a second domain of the 2D antenna structure, and wherein the one or more first domain PMIs have a reporting cycle shorter than a reporting cycle of the one or more second domain PMIs.