A communications device for transmitting data to or receiving data from a mobile communications network, the mobile communications network providing a wireless access interface for the communications device, the communications device comprising: a transmitter unit adapted to transmit data to the mobile communications network via the wireless access interface provided by one or more network elements of the mobile communications network, and a receiver unit adapted to receive data from the mobile communications network via the wireless access interface provided by the one or more network elements of the mobile communications network, the wireless access interface providing a plurality of communications resource elements across a first frequency range, wherein the wireless access interface includes a plurality of time divided sub-frames, and at least one of the sub-frames includes a first wideband control channel in a part of the sub-frame for communicating first signalling information to the communications device, and the at least one of the sub-frames includes a second narrow band control channel in a second part of the sub-frame and having a bandwidth which is less than the first wideband control channel and a duration of the second narrow band control channel within the sub-frame is greater than a duration of the first wideband control channel within the sub-frame, the second narrow band control channel being configured for communicating second signalling information to the communications device, and the receiver unit is configured to receive a sleep indication signal, the sleep indication signal indicating to the communications device that the communications device does not need to receive the second signalling information from the second narrow band control channel, and in response to receiving the sleep indication signal, to stop receiving the second signalling information from the second narrow band control channel. a transmitter unit adapted to transmit data to the mobile communications network via the wireless access interface provided by one or more network elements of the mobile communications network, and a receiver unit adapted to receive data from the mobile communications network via the wireless access interface provided by the one or more network elements of the mobile communications network, the wireless access interface providing a plurality of communications resource elements across a first frequency range, wherein the wireless access interface includes a plurality of time divided sub-frames, and at least one of the sub-frames includes a first wideband control channel in a part of the sub-frame for communicating first signalling information to the communications device, and the at least one of the sub-frames includes a second narrow band control channel in a second part of the sub-frame and having a bandwidth which is less than the first wideband control channel and a duration of the second narrow band control channel within the sub-frame is greater than a duration of the first wideband control channel within the sub-frame, the second narrow band control channel being configured for communicating second signalling information to the communications device, and the receiver unit is configured to receive a sleep indication signal, the sleep indication signal indicating to the communications device that the communications device does not need to receive the second signalling information from the second narrow band control channel, and in response to receiving the sleep indication signal, to stop receiving the second signalling information from the second narrow band control channel.