Communications system for transmitting and receiving data

A communications system comprising infrastructure equipment arranged to provide a wireless interface to a communications device, the communications device comprising a controller and a transceiver configured to transmit and/or receive signals representing the data to and/or from the infrastructure equipment over the wireless interface, and the transceiver under control of the controller is configured

• to transmit a request for services message to the infrastructure equipment, and
• to receive a response message to the request for services message transmitted from the infrastructure equipment, wherein the request for services message includes a delay period and the infrastructure equipment, in response to receiving the request for services message, processes the request to form the response message and stores the response message for transmission to the communications device, the response message being stored until the expiry of the delay period or transmission of the response message, and the controller is configured after transmission of the request for services to configure the transceiver to enter a reduced power state in which the amount of power consumed by the transceiver is reduced and to exit the reduced power state to receive the response message.