The present invention provides a method and apparatus for use in non-adaptive retransmission. The method comprises: configuring an uplink UL demodulation reference signal DM-RS for retransmission in response to a retransmission request. In one embodiment, the demodulation reference signal DM-RS is configured to be the same as a demodulation reference signal for an initial transmission. In another embodiment, the demodulation reference signal DM-RS is configured with respect to the number of layer(s) for retransmission according to predetermined rules for the initial transmission.