Apparatus and method for transmitting and receiving channel state information reference symbol in relay network system

摘要

An apparatus and method for transmitting/receiving a Channel State Information-Reference Symbol (CSI-RS) in a relay network system are provided. The method for transmitting a CSI-RS in a relay network system includes selecting a subframe to transmit a CSI-RS, from DownLink (DL) subframes, transmitting, to a receive end, identifying information indicating that a CSI-RS is transmitted at the selected subframe, and transmitting a CSI-RS at the selected subframe.

主权项

1. A method for transmitting a Channel State Information-Reference Symbol (CSI-RS) in a transmit end, the method comprising:
selecting a subframe to transmit a CSI-RS, from DownLink (DL) subframes; transmitting, to a receive end, identifying information indicating that a CSI-RS is transmitted at the selected subframe; and transmitting a CSI-RS at the selected subframe, wherein, when the transmit end comprises a Relay Node (RN), the selecting of the subframe to transmit the CSI-RS comprises:
identifying by the RN, a subframe at which the RN receives a CSI-RS from an enhanced Node B (eNB);identifying, by the RN, subframes other than the subframe receiving the CSI-RS of the eNB, from DL subframes for a relay User Equipment (UE); andselecting, by the RN, a subframe at which the eNB transmits a CSI-RS to a macro UE from among the identified subframes.