A method of communicating control information performed by a communication device in a mobile telecommunication system in which each of a plurality of communication devices are allocated plural orthogonal frequency-division multiplexing (OFDM) resource allocations, the method including receiving, in a control channel, from a base station and over an E-UTRA air interface, control information identifying a frequency resource allocation in a shared data channel, and receiving, in the identified frequency resource allocation in the shared data channel, from a base station and over an E-UTRA air interface, control information identifying a further frequency resource allocation.