METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM

摘要

The present invention relates to a method and an apparatus for transmitting and receiving a reference signal in a wireless communication system. In the method, in order to dynamically switch an uplink (UL) Demodulation-Reference Signal (DM-RS) according to the communication environment, such as CoMP and MU-MIMO, a parameter set for generation of a reference signal sequence is configured to include a Virtual Cell Identifier (VCID) parameter configured by information of a total of 9 bits and a cyclic shift hopping initial value parameter cinitCSH, which is 9-bit information representing one integer value among 510 integer values. Therefore, it may be possible to achieve dynamic transmission or reception of a reference signal and channel estimation through the dynamic transmission or reception of the reference signal even when the communication environment dynamically changes as in a Cooperative Multiple Point transmission and reception (CoMP) scenario.

主权项

1. A method of transmitting a reference signal by a User Equipment (UE), the method comprising:
receiving an initial value and a cell identifier; determining a base sequence of a reference signal sequence based on the received cell identifier; determining a cyclic shift value of the reference signal sequence based on an initial value of a pseudo random sequence determined using the received initial value; and transmitting the reference signal based on the determined cyclic shift value of the reference signal sequence and the determined base sequence of the reference signal sequence.