Abstract:
A communications device transmitting/receiving signals to/from a mobile communications network includes one or more network elements providing a wireless access interface for the communications device. The wireless access interface includes plural communications resource elements across a host frequency range of a host carrier, and a first section of the communications resources within a first frequency range for preferable allocation to reduced capability devices forming a first reduced bandwidth carrier and a second section of the communications resources within a second frequency range for preferable allocation to the reduced capability devices forming a second reduced bandwidth carrier. Each of the first and second frequency ranges is within the host frequency range. The communications device is configured with a reduced capability to receive the signals only within a frequency bandwidth less than the host frequency range and equal to at least one of the first frequency range or the second frequency range.
Abstract:
A method of allocating radio resources for uplink transmissions in a wireless telecommunications system, the method including: a first terminal device communicating a request for an allocation of radio resources to a base station; the base station determining there is an association between the first terminal device and a second terminal device based on their having similar predicted traffic profiles for uplink data; and the base station establishing a radio resource allocation for the second terminal device based on the resources requested by the first terminal device, and consequently transmitting radio resource allocation messages to allocate radio resources to the first and the second terminal devices for respective uplink transmissions based on the request for an allocation of radio resources received from the first terminal device.
Abstract:
A method of communicating data to mobile terminals from an OFDM wireless communications network including a wireless access interface for communicating the data using a plurality of OFDM sub-carriers includes providing a first control channel having a bandwidth corresponding to a first frequency band at a first temporal position within a sub-frame, and transmitting resource allocation messages in the first control channel allocating communications resources of a first group of OFDM sub-carriers to communications terminals of a first type and allocating communications resources of a second group of OFDM sub-carriers to communications terminals of a second type. The method provides a second control channel within the second frequency band within the second group of OFDM sub-carriers in a second temporal position within a sub-frame, and transmits control information which is specific to the terminals of the second type operating to receive the data via the second group of OFDM sub-carriers.
Abstract:
A method receiving data at a communications terminal from an OFDM wireless communications network including a wireless access interface communicating the data using plural OFDM sub-carriers includes: receiving from a first control channel having a bandwidth corresponding to a first frequency band providing first plural OFDM sub-carriers a resource allocation message allocating communications resources of a second group of OFDM sub-carriers; and receiving from a second control channel within the second frequency band within the second group of OFDM sub-carriers control information specific to the communications terminal operating to receive the data via the second group of OFDM sub-carriers. The communications terminal receives resource allocation messages from the first control channel to allocate resources within the second frequency band forming a virtual carrier and to receive control information specific to the communications terminal, which receives data from the second frequency band of the virtual carrier via a second control channel.
Abstract:
An infrastructure equipment forming part of a mobile communications network includes a transmitter configured to transmit signals to communications devices via a wireless access interface, a receiver configured to receive signals transmitted from the communications devices via the wireless access interface, and a controller. The controller controls the transmitter and receiver across a first frequency bandwidth divided in time into plural frames, to form one of plural cells of the mobile communications network, each cell allocated a cell identifier by the mobile communications network. The controller and transmitter transmit in one or more of the frames a synchronization sequence providing an indication of one of the cell identifiers. A relative temporal location of the synchronization sequence within the frame provides the communications devices with an indication of the cell identifier which can be combined with detecting the synchronization sequence to improve estimate of the cell identifier for the cell.
Abstract:
A mobile communications network includes one or more network elements providing a wireless access interface for communications devices. The wireless access interface provides plural communications resource elements across a host frequency bandwidth, and includes, within the host frequency bandwidth, first communications resource elements within a first frequency bandwidth for allocation preferably to reduced capability devices to receive signals representing the data transmitted by the transmitter unit within the first bandwidth forming a first virtual carrier, the reduced capability devices each having a receiver bandwidth which is greater than or equal to the first frequency bandwidth but less than the host frequency bandwidth. Communications devices of different capabilities can be allocated communications resources within different frequency ranges according to their capability, which can relieve congestion on a centre frequency of communications resources in which communications devices with a minimum bandwidth capability must receive communications resources for receiving down link signals.
Abstract:
A method of allocating radio resources for uplink transmissions in a wireless telecommunications system, including: a first terminal device communicating a request for an allocation of radio resources to a base station; the base station determining whether there is an association between the first terminal device and a second terminal device based on their having similar predicted traffic profiles for uplink data; and the base station establishing a radio resource allocation for the second terminal device based on the resources requested by the first terminal device, and consequently transmitting radio resource allocation messages to allocate radio resources to the first and the second terminal devices for respective uplink transmissions based on the request for an allocation of radio resources received from the first terminal device.
Abstract:
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.
Abstract:
A mobile communications system transmitting data to and/or receiving data from communications devices includes one or more base stations, each including a transmitter and a receiver configured to provide a wireless access interface for 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 part of each sub-frame for communicating first signalling information to one or more of the communications devices, and a second narrow band control channel in a second part of each sub-frame. The base stations are configured to transmit a sleep indication signal to one or more of the communication devices, to realize a power saving.