Device and method for communication using a common identifier

A method of communicating data using a communications device via a mobile radio network, the method comprising:

• transmitting, by circuitry of the communications device, data to or receiving data from the mobile radio network via a wireless access interface of the mobile radio network using the established communications session, the wireless access interface including a random access communications channel (RACH) for uplink transmission of burst signals and a packet data communications channel;
• storing, by the circuitry, information which identifies the communications device to the mobile radio network, the information including a same common identifier as that provided to each of an associated group of communications devices, the common identifier used to establish a communications session for transmitting data to or receiving data from any device of the group of associated communications devices;
• determining, by the circuitry, whether another communications device of the associated group of communications devices transmits a random access burst in the RACH;
• entering a listening state, when the other communications device of the associated group of communications devices transmits the random access burst, to detect data transmitted to the other communications device of the associated group of communications devices via the packet data communications channel;
• and
• waiting, by the circuitry, a predetermined period of time in which no data is transmitted via the packet data communications channel before transmitting another random access burst on the RACH.