Mobile communications system, methods, controller, relay node and communications terminal

A mobile communications system comprising

• a base station, the base station including a transmitter and a receiver, the transmitter being configured to transmit signals via a wireless access interface to a plurality of relay nodes and to one or more communications terminals, and the receiver being configured to receive signals via the wireless access interface from the plurality of relay nodes and from the one or more communications terminals, and
• a controller operatively coupled to the base station and configured
• to control a first relay node of the plurality relay nodes to transmit signals representing the data to one of the communications terminals received from the base station or to receive signals representing the data from the communications terminal for transmission to the base station, wherein,
• upon first predetermined conditions being met, to control a second relay node of the plurality of relay nodes to transmit signals representing the data to the communications terminal received from the base station or to receive signals representing the data from the communications terminal for transmission to the base station, and
• to control the communications terminal to transmit a first signal representing at least a first part of the data to the first relay node for transmission to the base station, and to transmit a second signal representing at least a second part of the data to the second relay node for transmission to the base station.