Patent ID: 8830902

Claim:
A wireless communication method, comprising: carrying, by an evolved Node B, eNB, a Common Reference Signal, CRS, or a Demodulation Reference Signal, DMRS, over a carrier over which a data signal and/or a control signal is transmitted to a Relay Node, RN, after the end of a guard interval TRG and before the start of a guard interval RTG, wherein the TRG is a guard interval for the RN to transform from transmitting a signal to receiving a signal over a backhaul link, and the RTG is a guard interval for the RN to transform from receiving a signal to transmitting a signal over the backhaul link;and demodulating, by the RN, the signal transmitted from the eNB according to the CRS or the DMRS, wherein the TRG occupies the 2.sup.nd, 3.sup.rd and 4.sup.th OFDM symbols arranged sequentially in a temporal order in a Physical Recource Block, PRB, pair; and the RTG occupies the 14.sup.th OFDM symbol arranged sequentially in the temporal order in the PRB pair.