Abstract:
A wireless telecommunications system supports a virtual carrier operation mode in which downlink communications are made by a base station while a terminal device can receive at least some communications from the base station within a restricted subset of transmission resources, and supports terminal devices in a radio resource control connected mode and radio resource control idle mode. When there is to be a change in system information the base station transmits to the terminal device an indication that updated system information is to be broadcast by the base station, the indication received by the terminal device while in the connected mode. Before seeking to acquire the updated system information, the terminal device transitions from the connected mode to the idle mode, and then seeks to acquire updated system information. The base station restricts transmission of user-plane data to the terminal device until the terminal device re-enters the connected mode.
Abstract:
A method of operating network infrastructure equipment in a wireless telecommunications system configured to support communications between the network infrastructure equipment and terminal devices using a primary component carrier operating on radio resources within a first frequency band and a secondary component carrier operating on radio resources within a second frequency band. The method includes: transmitting a request message to plural terminal devices to request that at least some of plural terminal devices make measurements of radio channel conditions for radio resources within the second frequency band in accordance with a measurement configuration associated with the request message; receiving measurement reports from at least some of plural terminal devices indicating their respective measurements of radio channel conditions; and establishing an operating characteristic for the secondary component carrier based on the measurement reports.
Abstract:
A communications device is configured to receive data from a wireless access interface transmitted by a mobile communications network. The wireless access interface provides a plurality of communications resource elements within a system bandwidth providing a host frequency range of a host carrier and reserved communications resources for preferable allocation to reduced capability devices, the reserved communications resources forming a virtual carrier. In each of a plurality of time divided units, the wireless access interface provides a shared channel of communications resources and a control channel formed within the communications resources of the system bandwidth of the host frequency range for communicating resource allocation messages to communications devices. The resource allocation messages allocate the communications resources of the shared channel to the communication devices within the system bandwidth and allocate the reserved communications resources to the reduced capability devices. The reserved communications resources include one or more communications resources which are not allocated for transmitting data to the reduced capability devices. A reduced capability device receives a resource allocation message from the control channel, allocating resources within the reserved communications resources of the virtual carrier for receiving data, determines the communications resources of the reserved communications resources which will contain signals representing the data from the communications resources allocated within the reserved communications resources by the received resource allocation message and excluding any of the one or more communications resources which are not allocated for transmitting data and receives the data from the determined communications resources of the reserved communications resources of the virtual carrier.
Abstract:
A terminal device in a wireless telecommunication system which transmits a master information block and a first and a second system information block the first and second system information block comprising first and second scheduling information relating to the timing of at least one additional block of system information. The terminal device configured to receive the master information block of system information that comprises a marker instructing the terminal device to ignore the first scheduling information and process only the second scheduling information.
Abstract:
A wireless telecommunications system in which downlink communications are made using a radio interface that spans a system frequency bandwidth (host carrier) and supports at least some communications from a base station to least some terminal devices within a plurality of restricted frequency bands (virtual carriers) which are narrower than and within the system frequency bandwidth. A terminal device conveys an indication of its identity, e.g. an IMSI, to the base station during an initial connection procedure as the terminal device seeks to access the radio interface. The terminal device and the base station both determine a selected restricted frequency band from among the plurality of restricted frequency bands based on the identity of the terminal device in the same way. Thus the terminal device and the base station select the same restricted frequency band and can accordingly configure their respective transceivers to allow for downlink communications between them within the selected restricted frequency band.
Abstract:
A terminal device for use with a wireless telecommunications system comprising a base station and a plurality of relay nodes, the terminal device comprising: a transmitter; a receiver; and a controller operable to: select a first relay node from the plurality of relay nodes and control the transmitter and receiver to exchange signals with the base station via the first relay node; measure a signal characteristic associated with the first relay node and compare the measured signal characteristic with a predetermined threshold value; if the measured signal characteristic is greater than the predetermined threshold value, control the transmitter and receiver to continue to exchange signals with the base station via the first relay node; and if the measured signal characteristic is less than the predetermined threshold value, perform a procedure for allowing selection of a second relay node from the plurality of relay nodes via which the transmitter and receiver may exchange signals with the base station.
Abstract:
A method of transmitting/receiving data between a communications device and a mobile communications network including a wireless access interface providing communications resources within a system bandwidth and in time divided units allocated to communications devices of first and second types having different capabilities. The method generates, at the communications device, a random access message, by selecting a sequence from a predetermined set of sequences, which have been allocated to the communications devices of the second type and transmitting the random access message from the communications device to the wireless communications network, and in response to the random access message, receives a random access response at the communications device transmitted according to the capability of the communications device of second type, the random access message being recognized as from a communications device of second type from the selected one of the predetermined sequences allocated to the communications devices of second type.
Abstract:
A communications device and method of communicating using a communications device is disclosed for performing device-to-device communications. The communications device is configured to determine in accordance with predetermined conditions whether the communications device is within a coverage area of a mobile communications network, and if the communications device is determined to be within the coverage area of the mobile communications network, to transmit or to receive signals via the wireless access interface to one or more other communications devices in accordance with device to device communications using communications resources of the wireless access interface allocated according to a first mode in which the mobile communications network performs resource allocation.
Abstract:
A terminal device for use in a wireless telecommunications system comprises a transceiver to perform wireless communication with a base station and to obtain system information defining communication parameters from system information data received from that base station; system information storage; and a controller to detect whether the system information storage already holds at least some of the system information applicable to a newly communicating base station and to control the transceiver to obtain any portions of the system information not already held by the terminal device, in which: the system information comprises a plurality of system information blocks; and the controller is configured to detect parts of a system information block stored by the system information storage which are applicable to the newly communicating base station and to obtain other parts of that system information block as a partial system information block from the newly communicating base station.
Abstract:
A mobile telecommunications system anchor base station for a mobile telecommunications system is described. The mobile telecommunications system has at least one anchor cell and at least one slave cell which is associated with the anchor cell. The anchor base station has a circuitry which is configured to transmit system information based on beam information.