Method and apparatus for configuring a transmission mode for a backhaul link transmission

摘要

Provided is a method for configuring a transmission mode for a backhaul link transmission in a radio communication system including a relay station. The method comprises: a step in which a base station transmits, to the relay station, a relay-physical downlink control channel (R-PDCCH) containing backhaul control information; and a step in which the base station transmits, to the relay station, a relay-physical downlink shared channel (R-PDSCH) containing backhaul data, wherein the R-PDCCH is transmitted in one transmission mode selected from a plurality of predetermined transmission modes, and a reference signal transmitted through the R-PDCCH for the demodulation of the R-PDCCH is determined in accordance with said selected transmission mode.

主权项

1. A method of demodulating a signal, performed by a relay node, the method comprising:
receiving control information through a relay-physical downlink control channel (R-PDCCH) from an evolved-NodeB (eNB); receiving a data through a relay-physical downlink shared channel (R-PDSCH) from the eNB; and demodulating the control information and the data, wherein when a number of transmission layers of the R-PDSCH is 2 or more than 2, reference signals among a plurality of reference signals transmitted by a specific one of a plurality of antenna ports are used for a demodulation of the control information.