A method of reducing interference in a mobile communications network, wherein the mobile network comprises one or more infrastructure units and one or more terminals, the infrastructure units being operable to send and/or receive wireless signals with the one or more terminals. The method comprises estimating an interference level in the mobile communication network. In the event that the interference level is detected as being above a satisfactory threshold: an infrastructure unit of the one or more infrastructure units is selected, which is currently operating as one of a base station or an uplink and downlink relay node configured to relay uplink and downlink transmissions and the infrastructure unit is configured to operate as an uplink relay node such that it does not send downlink signals. In the event that the interference level is detected as being below a satisfactory threshold, an infrastructure unit currently operating as an uplink relay node such that it does not send downlink signals is selected
