Device-to-device content providing method

A device-to-device (D2D) content providing method at a device, the method comprising:

• creating, at the device, a neighboring device list by discovering one or more neighboring devices connectible to the device, wherein the device includes a first interface for supporting D2D communication and a second interface for supporting access to a communication network, and wherein the second interface includes at least one communication module;
• transmitting, at the device, to a communication control server, a D2D communication request including the neighboring device list, information about a type of the at least one communication module of the second interface of the device, and information about a specific content, wherein the D2D communication request is electrical signals to request the communication control server to select at least one content-providing device from among the one or more neighboring devices indicated in the neighboring device list;
• receiving, at the device, from the communication control server, information about the selected at least one content-providing device, wherein from among the one or more neighboring devices indicated in the neighboring device list, the communication control server selects the at least one content-providing device having a same content as the specific content requested by the device, based on the information about the specific content, and further having a same type of at least one communication module as the type of the at least one communication module of the second interface of the device, based on the information about the type of the at least one communication module of the second interface of the device;
• requesting, at the device, the selected at least one content-providing device to provide the specific content;
• and
• receiving, at the device, the specific content from the selected at least one content-providing device,
• wherein the method includes, when the one or more neighboring devices to be connectible to the device are not discovered in the neighboring device list of the one or more neighboring devices:
• transmitting the D2D communication request including only the information about an available type of at least one communication interface module of each of the one or more neighboring devices to the communication control server;
• receiving, from the communication control server, the information about at least one available device to provide the specific content selected based on the information about the type of at least one communication interface module;
• requesting the at least one available device for providing the specific content in response to the information about the at least one available device;
• and
• receiving the specific content from the at least one available device.