Device to device communication method and apparatus
A device to device (D2D) communication apparatus and method are provided. The D2D communication apparatus includes a transceiver configured to receive resource configuration information indicating D2D resources configured in a serving cell from a base station (BS) of the serving cell, and a controller configured to determine locations of resources for transmission or reception of signals for D2D communication based on the resource configuration information. The resource configuration information includes information about length of common D2D resources configured in a plurality of cells and additional D2D resources configured in the serving cell and information about length of common and additional D2D resources of a cell that configures maximum-sized additional D2D resources among the serving cell and neighboring cells.
1. A method of a user equipment (UE) for device to device (D2D) communication, the method comprising:
receiving, resource configuration information from a base station, the resource configuration information comprising first information indicating D2D transmission resources for D2D discovery and second information indicating D2D reception resources for D2D discovery;
transmitting a D2D discovery signal on the D2D transmission resources indicated in the first information; and
monitoring the D2D transmission resources indicated by the first information and the D2D reception resources indicated by the second information to receive at least one D2D discovery signal transmitted by another UE on a same frequency as a serving cell, and
wherein the D2D transmission resources indicated by the first information are commonly used by UEs in the serving cell, and
wherein the D2D transmission resources are used by the UE in an idle state for transmitting the D2D discovery signal.
2. The method of claim 1 , wherein the D2D transmission resources indicated by the first information are commonly used by at least one neighbor cell.
3. The method of claim 1 , wherein the D2D transmission resources are separately configured for a transmission of a D2D discovery message and a transmission of a D2D communication packet.
4. The method of claim 1 , wherein the D2D reception resources are separately configured for a reception of a D2D discovery message and a reception of a D2D communication packet.
5. A method of a base station for supporting a device to device (D2D) communication method, the method comprising:
generating resource configuration information comprising first information indicating D2D transmission resources for D2D discovery and second information indicating D2D reception resources for D2D discovery; and
transmitting the resource configuration information to at least one user equipment (UE) in a serving cell,
wherein the D2D transmission resources are used for transmitting a D2D discovery signal by the at least one UE in the serving cell, and the D2D reception resources are used for receiving at least one D2D discovery signal transmitted by another UE on a same frequency as the serving cell,
wherein the D2D transmission resources indicated by the first information are commonly used by UEs in the serving cell, and
wherein the D2D transmission resources are used by the UE in an idle state for transmitting the D2D discovery signal.
6. The method of claim 5 , wherein the D2D transmission resources indicated by the first information are commonly used by at least one neighbor cell.
7. The method of claim 5 , wherein the D2D transmission resources are separately configured for a transmission of a D2D discovery message and a transmission of a D2D communication packet.
8. The method of claim 5 , wherein the D2D reception resources are separately configured for a reception of a D2D discovery message and a reception of a D2D communication packet.
9. An apparatus of a user equipment (UE) for device to device (D2D) communication, the apparatus comprising:
a transceiver configured to:
receive resource configuration information from a base station, the resource configuration information comprising first information indicating D2D transmission resources for D2D discovery and second information indicating D2D reception resources for D2D discovery, and
transmit a D2D discovery signal on the D2D transmission resources indicated in the first information; and
a controller configured to monitor the D2D transmission resources indicated by the first information and the D2D reception resources indicated by the second information to receive at least one D2D discovery signal transmitted by another D2D UE on a same frequency as a serving cell,
wherein the D2D transmission resources indicated by the first information are commonly used by UEs in the serving cell, and
wherein the D2D transmission resources are used by the UE in an idle state for transmitting the D2D discovery signal.
10. The apparatus of claim 9 , wherein the D2D transmission resources indicated by the first information are commonly used by at least one neighbor cell.
11. The apparatus of claim 9 , wherein the D2D transmission resources are separately configured for a transmission of a D2D discovery message and a transmission of a D2D communication packet.
12. The apparatus of claim 9 , wherein the D2D reception resources are separately configured for a reception of a D2D discovery message and a reception of a D2D communication packet.
13. An apparatus of a base station for supporting device to device (D2D) communication, the apparatus comprising:
a controller configured to generate resource configuration information comprising first information indicating D2D transmission resources for D2D discovery and second information indicating D2D reception resources for D2D discovery; and
a transceiver configured to transmit the resource configuration information to at least one user equipment (UE) in a serving cell,
wherein the D2D transmission resources are used for transmitting a D2D discovery signal by the at least one UE in the serving cell, and the D2D reception resources are used for receiving at least one D2D discovery signal transmitted by another UE on a same frequency as the serving cell,
wherein the D2D transmission resources indicated by the first information are commonly used by UEs in the serving cell, and
wherein the D2D transmission resources are used by the UE in an idle state for transmitting the D2D discovery signal.
14. The apparatus of claim 13 , wherein the D2D transmission resources indicated by the first information are commonly used by at least one neighbor cell.
15. The apparatus of claim 13 , wherein the D2D transmission resources are separately configured for a transmission of a D2D discovery message and a transmission of a D2D communication packet.
16. The apparatus of claim 13 , wherein the D2D reception resources are separately configured for a reception of a D2D discovery message and a reception of a D2D communication packet.