COMMUNICATIONS DEVICE AND METHOD

摘要

A mobile communications system transmitting/receiving data to/from communications devices includes one or more base stations, each including a transmitter and receiver. The transmitter and receiver provide a wireless access interface communicating data to/from the communications devices. The wireless access interface provides plural communications resource elements across a first frequency range and within a second frequency range within and smaller than the first frequency range. The wireless access interface includes plural time divided sub-frames, at least one of the sub-frames including a first wideband control channel in a first part of each sub-frame communicating first signalling information, and a second narrow band control channel in a second part of each sub-frame. The base stations transmit a sleep indication signal to one or more of the communications devices, to realize a power saving to the communications devices which are not to receive the second signalling information for one or more sub-frames.

主权项

1. 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 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.