Base station and wireless device used in wireless communication system

A base station that controls communication in which a time division duplex frame including at least one uplink subframe and at least one downlink subframe is transmitted in a wireless communication system, the base station comprising:

• a receiver that receives a request for performing D2D (device-to-device) communication from a wireless device;
• a signaling processor that generates position information to indicate a position at which a blank subframe to be used for the D2D communication is allocated in the time division duplex frame according to the request;
• and
• a transmitter that transmits the position information to the wireless device, the wireless device determining a schedule for the D2D communication based on the position information, wherein
• the blank subframe is configured to include a symbol for control signal and a plurality of blank symbols in which no signal is transmitted from the base station.

A wireless communication system comprising:

• a wireless device;
• and
• a base station that controls communication in which a time division duplex frame including at least one uplink subframe and at least one downlink subframe is transmitted in the wireless communication system, wherein
• the wireless device transmits a request for performing D2D (device-to-device) communication to the base station,
• the base station generates position information to indicate a position at which a blank subframe is allocated in the time division duplex frame and transmits the position information to the wireless device,
• the wireless device determines a schedule for D2D communication based on the position information and reports the schedule to a corresponding wireless device, and
• the blank subframe is configured to include a symbol for control signal and a plurality of blank symbols in which no signal is transmitted from the base station.

A wireless communication method performed by a wireless device used in a wireless communication system that includes a base station for controlling communication in which a time division duplex frame including at least one uplink subframe and at least one downlink subframe is transmitted, the wireless communication method comprising:

• transmitting a request for performing D2D (device-to-device) communication to the base station;
• receiving position information to indicate a position at which a blank subframe is allocated in the time division duplex frame from the base station;
• determining a schedule for D2D communication based on the position information;
• and
• reporting the schedule to a corresponding wireless device, wherein
• the blank subframe is configured to include a symbol for control signal and a plurality of blank symbols in which no signal is transmitted from the base station.

A wireless communication method performed by a base station that controls communication in which a time division duplex frame including at least one uplink subframe and at least one downlink subframe is transmitted in a wireless communication system, the wireless communication method comprising:

• receiving a request for performing D2D (device-to-device) communication from a wireless device;
• generating position information to indicate a position at which a blank subframe to be used for the D2D communication is allocated in the time division duplex frame according to the request;
• and
• transmitting the position information to the wireless device, the wireless device determining a schedule for the D2D communication based on the position information, wherein
• the blank subframe is configured to include a symbol for control signal and a plurality of blank symbols in which no signal is transmitted from the base station.