A communications device (2700, 104) for communicating data, the communications device comprising a receiver for receiving signals representing downlink data from a network element (2710, 101) of a wireless telecommunications system via a wireless access interface having a logical baseband frame structure, a transmitter for transmitting signals representing uplink data to the network element via the wireless access interface, the logical baseband frame structure being formed from one or more minimum frequency units and one or more time units to form one or more orthogonal frequency division multiplexing, OFDM,-based resource blocks for allocation by the network element to the communications device, and a controller for controlling the transmitter and the receiver to transmit and to receive signals representing the data to and from the network element using the wireless access interface, wherein the controller is configured in combination with the transmitter and the receiver to receive an indication of two or more unoccupied GSM channels which are available within a host frequency band, and to transmit or to receive the signals representing the data to or from the network element using two or more OFDM-based resource blocks of the logical baseband frame structure formed within the host frequency band, characterised in that the two or more OFDM-based resource blocks of the logical baseband frame structure are formed from a combination in time and frequency of resources of the two or more unoccupied GSM channels within the host frequency band, the logical baseband frame structure extends over a predetermined number of OFDM symbols, and the resources of the two or more unoccupied GSM channels within the host frequency band are non-contiguous in frequency and separated in time. a receiver for receiving signals representing downlink data from a network element (2710, 101) of a wireless telecommunications system via a wireless access interface having a logical baseband frame structure, a transmitter for transmitting signals representing uplink data to the network element via the wireless access interface, the logical baseband frame structure being formed from one or more minimum frequency units and one or more time units to form one or more orthogonal frequency division multiplexing, OFDM,-based resource blocks for allocation by the network element to the communications device, and a controller for controlling the transmitter and the receiver to transmit and to receive signals representing the data to and from the network element using the wireless access interface, wherein the controller is configured in combination with the transmitter and the receiver to receive an indication of two or more unoccupied GSM channels which are available within a host frequency band, and to transmit or to receive the signals representing the data to or from the network element using two or more OFDM-based resource blocks of the logical baseband frame structure formed within the host frequency band, characterised in that the two or more OFDM-based resource blocks of the logical baseband frame structure are formed from a combination in time and frequency of resources of the two or more unoccupied GSM channels within the host frequency band, the logical baseband frame structure extends over a predetermined number of OFDM symbols, and the resources of the two or more unoccupied GSM channels within the host frequency band are non-contiguous in frequency and separated in time.