Terminal device, infrastructure equipment, wireless telecommunications system and methods

An infrastructure equipment for use with a wireless telecommunications system, the infrastructure equipment comprising a transceiver and a controller, wherein:

• the controller is configured:
• to control the transceiver to attempt to receive a first signal from a terminal device of the wireless telecommunications system or to transmit a first signal to the terminal device during one or more of a plurality of predetermined time periods, the controller being configured to control the transceiver to attempt to receive or to transmit a first signal during the one or more of the plurality of predetermined time periods in response to transmitting one or more second signals to the terminal device indicating, respectively, that the one or more of the plurality of predetermined time periods should be used for the attempted reception or transmission of a first signal;
• and
• to control the transceiver to receive a third signal from the terminal device or to transmit a third signal to the terminal device, the third signal comprising information on the basis of which it is determinable whether or a not a predetermined condition associated with a characteristic associated with the one or more second signals has been met, the predetermined condition having been met indicating a discrepancy in the number of second signals transmitted by the transceiver and the number of second signals received by the terminal device.

A method of operating a terminal device for use with a wireless telecommunications system, the terminal device, the method comprising:

• attempting to receive a first signal from infrastructure equipment of the wireless telecommunications system or to transmit a first signal to the infrastructure equipment during one or more of a plurality of predetermined time periods, wherein the attempting to receive or to transmit a first signal during the one or more of the plurality of predetermined time periods is carried out in response to determining that one or more second signals indicating, respectively, that the one or more of the plurality of predetermined time periods should be used for the attempted reception or transmission of a first signal have been received by the terminal device;
• determining a characteristic associated with the one or more second signals;
• and
• receiving a third signal from the infrastructure equipment or transmitting a third signal to the infrastructure equipment, the third signal comprising information on the basis of which it is determinable whether or not a predetermined condition associated with the characteristic associated with the one or more second signals has been met, the predetermined condition having been met indicating a discrepancy in the number of second signals transmitted by the infrastructure equipment and the number of second signals received by the terminal device.