Methods, communications device and infrastructure equipment

A communications device for receiving user plane data from a wireless communications network when the communications device is not in an active radio resource connected mode, the communications device comprising transceiver circuitry and controller circuitry configured in combination:

• to receive one of paging signalling and a random access procedure message from the wireless communications network, wherein the one of the paging signalling and the random access procedure message includes a first indication that the wireless communications network has user plane data for transmission to the communications device while the communications device is not in the active radio resource connected mode,
• to determine from the one of the paging signalling and the random access procedure message a set of radio resources on which the user plane data is to be transmitted by the wireless communications network to the communications device, wherein the user plane data is to be received by the communications device from the wireless communications network as part of a random access procedure,
• to receive from the wireless communications network a second indication that the communications device should transmit an application layer response to the wireless communications network providing indication that the communications device successfully received the user plane data using the determined set of radio resources, and
• to transmit to the wireless communications network a third indication of whether or not the communications device successfully received the user plane data using the determined set of radio resources,
• wherein the second indication that the communications device should transmit the application layer response is received in one of:
• the paging signalling,
• a random access response message received from the wireless communications network, the random access response message being a second message of the random access procedure, and
• a downlink message received from the wireless communications network using the determined set of radio resources while the communications device is not in the active radio resource connected mode, the user plane data being received as part of the downlink message.

An infrastructure equipment forming part of a wireless communications network for transmitting user plane data to a communications device when the communications device is not in an active radio resource connected mode, the infrastructure equipment comprising transceiver circuitry and controller circuitry configured in combination:

• to transmit one of paging signalling and a random access procedure message to the communications device, wherein the one of the paging signalling and the random access procedure message includes a first indication that the wireless communications network has user plane data for transmission to the communications device while the communications device is not in the active radio resource connected mode and indication of a set of radio resources on which the user plane data is to be transmitted by the wireless communications network to the communications device, wherein the user plane data is to be received by the communications device from the wireless communications network as part of a random access procedure,
• to transmit the user plane data to the communications device using the determined set of radio resources while the communications device is not in the active radio resource connected mode,
• to transmit to the communications device a second indication that the communications device should transmit an application layer response to the infrastructure equipment providing indication that the communications device successfully received the user plane data using the set of radio resources, and
• to receive from the communications device a third indication of whether or not the communications device successfully received the user plane data using the determined set of radio resources,
• wherein the second indication that the communications device should transmit the application layer response is received in one of:
• the paging signalling,
• a random access response message received from the wireless communications network, the random access response message being a second message of the random access procedure, and
• a downlink message received from the wireless communications network using the determined set of radio resources while the communications device is not in the active radio resource connected mode, the user plane data being received as part of the downlink message.