An interference suppression method for future wireless relay networks is proposed. It utilizes multi-antenna relay node (RN) to suppress the interference from the user equipment (UE) (e.g. macrocell UE (mUE)) that does not belong to the RN. The proposed scheme is based on aligning the interference into the null space of the receive weight matrix. The proposed method does not require RN to decode the symbols sent from the relay UE (rUE). In addition, the channel state information (CSI) of the channel between the mUE and the relay is not needed at the relay. Simulation results show that the proposed method achieves good performance.