Ntt Docomo, Inc.

Riichi Kudou

Tatsunori Obara

Shinpei Yasukawa

In order to prevent wireless resources from becoming scarce in a Sidelink V2X communication, a UE () that carries out the Sidelink V2X communication causes: a free resource search unit () to search for free resources within a first resource range; a transmission processing unit () to transmit a first transmission packet by using the free resources within the first resource range; a transmission inhibition timer unit () to set transmission inhibition time which is time for inhibiting start of a second resource range after the transmission of the first transmission packet within the first resource range; and the free resource search unit () to search for free resources within the second resource range after the expiration of the transmission inhibition time.

Wireless communication apparatus and wireless communication method

A server device for determining, on the basis of a communication cost in a communication area in which at least one terminal is communicatable and the position of the at least one terminal, a first terminal to which uplink data is to be transmitted in a first communication area, in which the communication cost is less than a threshold, transmitting to the first terminal an indication for uplink data transmission in the first communication area, and receiving uplink data from the first terminal.

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Tokyo, Japan

Riichi Kudou