Method and apparatus for allocating resources for D2D communication

A method for allocating resources for a device-to-device (D2D) communication to a device at a base station (BS), the method comprising:

• broadcasting resource allocation information comprising information about a first resource and first power control information for the D2D communication the first resource for the D2D communication being part of a cellular communication resource;
• receiving, from the device, a resource request;
• when the resource request is received from the device, recognizing a channel quality of a downlink signal measured by the device is larger than a predetermined threshold;
• and
• transmitting, to the device, a response comprising a second resource and second power control information, wherein the second resource is a dedicated resource allocated for the D2D communication of the device.

A device configured to conduct a device-to-device (D2D) communication, the device comprising:

• a transceiver configured to receive, from a base station (BS), resource allocation information comprising information about a first resource and first power control information for the D2D communication, the first resource being a part of a cellular communication resource;
• and
• a controller configured to:
• measure a channel quality of a downlink signal received from the BS,
• if the measured channel quality is smaller than a predetermined threshold, control the transceiver to conduct the D2D communication using the resource allocation information, and
• if the measured channel quality is larger than the predetermined threshold, control the transceiver to:
• transmit, to the BS, a resource request for the D2D communication,
• receive, from the BS, a response in response to the resource request, and
• transmit data for the D2D communication using a second resource and second power control information indicated by the response.