Method and apparatus for transmitting/receiving a reference signal in a wireless communication system

摘要

A method and apparatus for transmitting/receiving reference signals in Long Term Evolution (LTE) and LTE-Advanced (LTE-A) systems includes determining whether a dedicated reference signal is detected in a current subframe; estimating, if a dedicated reference signal is detected in the current subframe, a data channel using the dedicated reference signal to receive data; and estimating, if no dedicated reference signal is detected in the current subframe, a data channel using a common reference signal detected in the current subframe to receive data. The transmission scheme uses a DeModulation Reference Signal (DM-RS) for channel response estimation. To secure backward compatibility of the LTE-A system, a Common Reference Signal is transmitted in normal subframes.

主权项

1. A method for receiving data, the method comprising:
receiving transmission mode information and Multicast Broadcast Single Frequency Network (MBSFN) subframe information through higher layer signaling; identifying that the transmission mode information indicates a predetermined transmission mode; and receiving data associated with at least one User Equipment (UE)-specific reference signal in an MBSFN subframe and receiving data associated with at least one cell-specific reference signal in a non-MBSFN subframe based on the predetermined transmission mode, wherein the predetermined transmission mode supports transmission based on up to 8 UE-specific reference signals.