Communication system, communications device, infrastructure equipment and method of allocating resources for performing device-to-device(D2D) communication

A communications device for device-to-device (D2D) communications, the communications device configured to perform D2D communications via a wireless access interface with one or more other communications devices of a group of communications devices, at least one of the group of communications devices serves as a controlling entity, the communications device comprising:

• a transmitter configured to transmit D2D data to one of more of the communications devices of the group;
• a receiver configured to receive D2D data from one of more of the communications devices of the group;
• and
• a controller configured in combination with the transmitter and the receiver to
• transmit D2D data in resources of the wireless access interface allocated by the controlling entity to one or more of the communications devices of the group operating within the coverage area and under control of the controlling entity;
• detect signals in the wireless access interface causing interference in the resources of the wireless access interface used to transmit D2D data;
• and,
• in response to detecting the signals causing the interference,
• on a condition that an infrastructure equipment caused the interference transmit to the infrastructure equipment an indication of the resources of the wireless access interface used to transmit the D2D data in a random access channel (RACH) message, and
• on a condition that an interfering entity caused the interference, transmit to the controlling entity the indication of the resources of the wireless access interface used to transmit the D2D data so the controlling entity takes action to compensate for the interference, wherein the interfering entity is a neighboring D2D group.

A method for performing device-to-device D2D communications between a plurality of communications devices via a wireless access interface, at least one of the plurality of communications devices serves as a controlling entity, the method comprising:

• transmitting, by one of the plurality of communications devices in resources of the wireless access interface allocated by the controlling entity, D2D data to one or more of the communications devices operating within the coverage area and under control of the controlling entity;
• detecting, at one of the communications devices, signals in the wireless access interface causing interference in the resources of the wireless access interface used to transmit the D2D data;
• in response to the detected signals causing the interference,
• on a condition that an infrastructure equipment caused the interference, transmitting to the infrastructure equipment an indication of the resources of the wireless access interface used to transmit the D2D data in a random access channel (RACH) message, and
• on a condition that an interfering entity caused the interference, transmitting to the controlling entity the indication of the resources of the wireless access interface used to transmit the D2D data so the controlling entity takes action to compensate for the interference, wherein the interfering entity is a neighboring D2D group.

A communications device for performing device-to-device (D2D) communications via a wireless access interface with one or more other communications devices of a group of communications devices, at least one of the group of communications devices serves as a controlling entity, communications device comprising:

• circuitry comprising a processor and configured to
• transmit D2D data to another communications device in a first set of communication resources of the wireless access interface allocated by the controlling entity, wherein the another communications device operates within the coverage area and under control of the controlling entity;
• detect signals transmitted in the first set of communication that cause interference with the first set of communication resources of the wireless access interface used to transmit the D2D data;
• and
• in response to detecting the signals causing the interference,
• on a condition that an infrastructure equipment caused the interference, transmit to the infrastructure equipment an indication of the resources of the wireless access interface used to transmit the D2D data in a random access channel (RACH) message, and
• on a condition that an interfering entity caused the interference transmit to the controlling entity the indication of the resources of the wireless access interface used to transmit the D2D data so the controlling entity takes action to compensate for the interference, wherein the interfering entity is a neighboring D2D group.