Patent ID: 11877275
Assignee: LG ELECTRONICS INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for a user equipment (UE) to receive a reference signal from a base station in a wireless communication system, the method comprising:
receiving, from the base station, one or more synchronization signals;
receiving, from the base station, system information;
receiving, from the base station, at least one reference signal for downlink measurement;
transmitting, to the base station, feedback information for the downlink measurement;
receiving, from the base station, configuration information,
wherein the configuration information includes first mapping information related to a mapping relationship between a plurality of demodulation reference signal (DM-RS) mapping patterns, to which dedicated (DM-RSs) are mapped on a resource, and a plurality of transmission beams through which the dedicated DM-RSs are transmitted,
wherein the configuration information further includes third mapping information related to a mapping relationship between the plurality of DM-RS mapping patterns and a plurality of transmission periodicities of a channel state information reference signal (CSI-RS);
receiving, from the base station, CSI-RSs with a specific transmission periodicity from among the plurality of transmission periodicities;
receiving, from the base station, downlink control information (DCI) including first transmission beam information related to a first transmission beam among the plurality of transmission beams;
identifying a first DM-RS mapping pattern mapped to the first transmission beam and the specific transmission periodicity based on the first mapping information and the third mapping information;
estimating a channel based on a first dedicated DM-RS related to a demodulation of downlink data, wherein the first dedicated DM-RS is received through the first transmission beam using the first DM-RS mapping pattern; and
receiving, from the base station, the downlink data via the estimated channel through the first transmission beam,
wherein a different DM-RS mapping pattern among the plurality of DM-RS mapping patterns corresponds to a different transmission beam among the plurality of transmission beams.