US 2015/0189660 A1Published application

Communications device and method

AssigneeSony Corporation

InventorYuichi Morioka

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Abstract

A mobile communications system communicates data to/from mobile communications devices, and provides a wireless access interface communicating data to/from the mobile communications devices, on a downlink first carrier providing plural communications resource elements across a first frequency range for communicating data, and within a second frequency range within and smaller than the first frequency range. The wireless access interface includes plural time divided sub-frames, each sub-frame including plural communications resource elements of the first frequency range and plural communications resource elements of the second frequency range. By arranging for a narrow band control channel to be within a virtual carrier and to communicate control information to both first full capability communications devices and second reduced capability communications devices, the second reduced capability devices can access the narrow band control channel which is shared with the first full-capability mobile devices, to make use of communications resources available to the communications system.

Claims9

Dependent claims

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 base stations of the mobile communications network via the wireless access interface provided by the base stations, wherein the wireless access interface providing
in a downlink, a first carrier, the first carrier providing a plurality of communications resource elements across a first frequency range for communicating data and providing a plurality of communications resource elements within a second frequency range which is within and smaller than the first frequency range forming a second carrier,
a plurality of time divided sub-frames, each sub-frame including the plurality of communications resource elements of the first frequency range and the plurality of the communications resource elements of the second frequency range, and each sub-frame includes
a first wideband control channel in a part of each sub-frame having a bandwidth corresponding substantially to the first frequency range, and
a second narrow band control channel in a second part of each sub-frame and having a bandwidth which is less than the first wideband control channel and;
and
a receiver unit adapted to operate with a receiver band width corresponding to the second frequency range and is configured to receive control information from the second narrow band control channel to access the plurality of the communications resource elements of the second frequency range of the second carrier.

4 more elements

A method of operating a communications device to transmit data to or receive data from a mobile communications network, the mobile communications network providing a wireless access interface for the communications device, the wireless access interface providing, on a downlink, a first carrier, the first carrier providing a plurality of communications resource elements across a first frequency range for communicating data and providing a plurality of communications resource elements within a second frequency range which is within and smaller than the first frequency range forming a second carrier,

the method comprising:
transmitting data to base stations of the mobile communications network via the wireless access interface provided by the base stations and
receiving data from the base stations of the mobile communications network via the wireless access interface provided by the base stations, wherein the data is received in a receiver band width corresponding to the second frequency range,
the data received from the base stations being provided in a plurality of time divided sub-frames, each sub-frame including the plurality of communications resource elements of the first frequency range and the plurality of the communications resource elements of the second frequency range, and each sub-frame includes
a first wideband control channel in a part of each sub-frame having a bandwidth corresponding substantially to the first frequency range, and
a second narrow band control channel in a second part of each 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,
and the method further comprises:
receiving control information from the second narrow band control channel to access the plurality of the communications resource elements of the second frequency range of the second carrier.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/414,169Filed 29 Aug 2013
Priority: GB 1215581.831 Aug 2012
Published: 2 Jul 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H04W 72/52
Allocation or scheduling criteria for wireless resources: based on load
H04L 5/001
The frequencies being orthogonal, e.g. OFDM or DMT: the frequencies being arranged in component carriers
H04L 5/0053
Arrangements for allocating sub-channels of the transmission path: allocation of signalling, i.e. of overhead other than pilot signals
H04L 5/0064
Allocation criteria: rate requirement of the data, e.g. scalable bandwidth, data priority