Patent ID: 9451488
Filing Date: 2016-09-20
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A method for reporting channel state information (CSI) by a user equipment (UE) in a wireless communication system, the method comprising: receiving information on a CSI-reference signal (CSI-RS) related parameter that includes a scrambling seed value (X receiving a CSI-RS on the basis of the CSI-RS related parameter; and reporting, to a base station (BS), CSI feedback information generated on the basis of the CSI-RS, wherein the CSI-RS related parameter is applied to one or more CSI-RS ports included in a single CSI-RS configuration, wherein the CSI-RS related parameter includes a plurality of ratio parameters indicating a first ratio of CSI-RS energy per resource element (EPRE) to physical downlink shared channel (PDSCH) EPRE per CSI-RS port, the first ratio being different from a second ratio of a cell-specific RS (CRS) EPRE to PDSCH EPRE, wherein the CSI feedback information is generated by compensating different power boosting levels of the CSI-RS ports based on the plurality of ratio parameters, and wherein an initial value (c