Device to-device D2D communication method and D2D communication device

A device-to-device (D2D) communication device, comprising a processor and a non-transitory processor-readable medium having processor-executable instructions stored thereon, the processor-executable instructions including a plurality of units, the units including:

• a determining unit, configured to a) determine a second time slot for transmitting D2D data according to a first time slot for transmitting D2D signaling to a D2D receiver and a synchronous transmission relationship between the D2D signaling and the D2D data, wherein 3 the second time slot is after the first time slot, and b) determine a third time slot for transmitting uplink control information in cellular communication according to the second time slot, wherein the uplink control information is used for indicating an uplink radio resource in the second slot of a cellular UE, and the third time slot is before the second time slot;
• a demodulating unit, configured to demodulate the uplink control information in the third time slot to acquire the uplink radio resource in the second time slot of the cellular user equipment (UE);
• and a processing unit, configured to multiplex the uplink radio resource in the second time slot of the cellular UE to perform D2D communication with the D2D receiver;
• wherein the processing unit is configured to a) select a first cellular UE, from a plurality of cellular UEs, causing minimal interference to the D2D transmitter, and b) multiplex the uplink radio resource in the second time slot of the first cellular UE.