Method for processing CSI-RS in wireless communication system

摘要

A method for transmitting a Channel State Information-Reference Signal (CSI-RS) in an Orthogonal Frequency Division Multiple Access (OFDMA) system, the method comprising of determining a CSI-RS pattern type based on a Physical Resource Block (PRB) index of a subframe, assigning, when the subframe is supposed to carry the CSI-RS, CSI-RSs of first to Nth antenna ports to first to Nth Orthogonal Frequency Division Multiplexing (OFDM) symbols of a PRB based on the CSI-RS pattern type, and transmitting the subframe including the PRB in which CSI-RSs of the first to Nth antennas a mapped, wherein the first to Nth CSI-RS pattern types map CSI-RSs of the first to Nth antenna ports to the first to Nth OFDM symbols of the PRB in an alternate manner.

主权项

1. A method for mobile communication by a terminal, the method comprising:
receiving first information and second information from a base station, the first information being related to a first Channel State Information Reference Signal (CSI-RS) and the second information being related to a second CSI-RS; receiving third information indicating a muting position of a resource element within a resource block, a muting subframe interval, and a subframe offset: determining a subframe in which at least one of the first CSI-RS and the second CSI-RS is transmitted based on the first information and the second information; measuring a downlink channel state using at least one of the first CSI- RS and the second CSI-RS in the determined subframe; and transmitting the measured downlink channel state to the base station.