Apparatus, method and non-transitory computer readable medium storing program, for wireless communication

A method performed by a wireless terminal, the method comprising:

• receiving a discovery signal of device-to-device (D2D) direct discovery transmitted from a first wireless terminal;
• estimating a transmission power estimated value of the discovery signal in accordance with a message type of the discovery signal;
• and
• determining an inter-terminal path loss between the first wireless terminal and the own terminal by using the transmission power estimated value and the received power value of the discovery signal.

A non-transitory computer readable medium storing a program for controlling an operation of a wireless terminal, the program causing a computer to:

• receive a discovery signal of device-to-device (D2D) direct discovery transmitted from a first wireless terminal;
• estimate a transmission power estimated value of the discovery signal in accordance with a message type of the discovery signal;
• and
• determine an inter-terminal path loss between the first wireless terminal and the own terminal by using the transmission power estimated value and the received power value of the discovery signal.

A non-transitory computer readable medium storing a program for controlling an operation of a wireless terminal, the program causing a computer to:

• transmit a discovery request signal of device-to-device (D2D) direct discovery to a first wireless terminal;
• receive a discovery response signal of the device-to-device (D2D) direct discovery transmitted from the first wireless terminal;
• and
• determine an inter-terminal path loss based on a received power difference value between the received power value of the discovery response signal and a target received power value used for transmission power control of the discovery response signal.