Method for transmitting dedicated reference signal, and method for receiving dedicated reference signal

摘要

Provided are a method of transmitting a dedicated reference signal (DRS), a method of receiving a DRS, and a feedback method of a terminal. The method of transmitting a DRS includes determining a DRS transmitting resource for at least one terminal which is a target of transmission, and transmitting the DRS using the determined transmission resource and notifying the terminal of information about layer used by the terminal. The method of receiving a DRS includes determining a DRS receiving resource, receiving information about layer used by a terminal from a serving cell base station, and receiving the DRS for the terminal using the determined reception resource and the information about layer. Accordingly, a terminal can find the position and sequence of its DRS. In particular, in the case of multi-user multiple input multiple output (MU-MIMO) or joint scheduling, it is possible to prevent or remove signal interference using the DRS of another terminal.

主权项

1. A method for a base station to transmit a reference signal to a terminal, the method comprising:
transmitting, from the base station, a virtual terminal-specific information to the terminal; generating a sequence for the reference signal for the terminal by using a physical cell identity (PCI) of a serving cell of the terminal and the virtual terminal-specific information; and transmitting, from the base station, the reference signal using the sequence to the terminal, wherein the virtual terminal-specific information is transmitted to the terminal by using downlink control information (DCI), wherein the reference signal is a dedicated reference signal for the terminal.