Patent ID: 11876658
Assignee: LG ELECTRONICS INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for performing communication, the method performed by a base station and comprising:
transmitting information related to cell-specific reference signal (CRS) of a long term evolution (LTE) cell to a User Equipment (UE),
wherein the base station supports new radio (NR) access technology,
wherein the information related to the CRS of the LTE cell includes information related to a CRS antenna port for the CRS of the LTE cell and information related to a v-shift value for the CRS of the LTE cell, and
wherein the information related to the CRS of the LTE cell is used by the UE to determine resource elements (REs) used for the CRS of the LTE cell; and
transmitting downlink data, which is related to the NR, to the UE,
wherein the downlink data is not mapped in the REs that are used for the CRS of the LTE cell, and
wherein the downlink data is rate-matched in one or more REs except for the REs used for the CRS of the LTE cell, based on that a subcarrier spacing for the downlink data, which is related to the NR, is 15 kHz.