UPLINK PILOT REFERENCE SIGNALS

摘要

There is provided mechanisms for assigning uplink pilot reference signals. A method is performed by a wireless device. The method comprises receiving an uplink grant and a downlink assignment for the wireless device, the uplink grant being associated with initially assigned uplink pilot reference signals. The method comprises determining at least one reciprocity pilot reference signal from the initially assigned uplink pilot reference signals, the uplink grant, and the downlink assignment. The method comprises transmitting the at least one reciprocity pilot reference signal in the uplink grant. There is provided mechanisms for detecting such uplink pilot reference signals.