A terminal device comprises a transmitter, a receiver and a controller. The transmitter is configured to transmit a first radio signal to infrastructure equipment of a wireless telecommunications system, the first radio signal being repeatedly transmitted a predetermined number of times during each of a plurality of consecutive time periods, each of the consecutive time periods being separated by a separation time period. The receiver is configured to receive, from the infrastructure equipment during one of the separation time periods, a second radio signal that comprises an indicator indicating that transmission of the first radio signal should continue or that transmission of the first radio signal should be terminated and the second radio signal having a measurable characteristic on the basis of which the terminal device reduces an offset of a reference radio frequency of the terminal device relative to a transmission radio frequency of the infrastructure equipment.