Patent ID: 9407420
Filing Date: 2016-08-02
CPC Classification: H04L,H04W

Claim Text:
1. An inter-vehicle communication system comprising: a base station communication device providing a communication area and being capable of performing wide area communication with wide-area communication terminals which are present in the communication area, the wide-area communication terminals being installed in a plurality of mobile station communication devices respectively communicably connected to wide-area communication terminals in the mobile station communication devices; and a plurality of inter-vehicle communication devices being installed in the mobile station communication devices respectively, the inter-vehicle communication devices performing short-range communication with each other using short-range communication resources different from wide-area communication resources of the wide-area communication, wherein: the base station communication device comprises a wide-area resource transmitting means for assigning the wide-area communication resources to a plurality of the wide-area communication terminals which are present in the communication area of the base station communication device and transmitting the wide-area communication resource assignment to the communication area; a wide-area communication terminal comprises notification means for notifying the inter-vehicle communication device which is communicable connected to the wide-area communication terminal, of the wide-area communication resource assignment received from the base station communication device; and the inter-vehicle communication device comprises assignment acquiring means for acquiring the wide-area communication resource assignment from the wide-area communication terminal, transmission timing deciding means for deciding a short-range communication resource assignment based on the acquired wide-area communication resource assignment, and data transmitting means for transmitting data based on a transmission timing defined by the short-range communication resource assignment, using the short-range communication, wherein the inter-vehicle communication device includes a determination storage unit that stores assignment information for determining a portion of the wide-area communication resource assignment to be referred to when deciding the short-range communication resource assignment, the transmission timing deciding means refers to the portion of the wide-area communication resource assignment acquired from the assignment acquiring means which is determined based on the assignment information and decides the short-range communication resource assignment, the wide-area communication terminal, when the wide-area communication terminal is in the connected state with the inter-vehicle communication device, sequentially or periodically transmits inter-vehicle communication connection information indicative of being in the connected state with the inter-vehicle communication device to the base station communication device, the base station communication device includes a base station storage unit that stores the same assignment information as that is stored in the determination storage unit of the inter-vehicle communication device, and a wide-area resource transmission control unit is configured to, when the inter-vehicle communication connection information is transmitted from the wide-area communication terminal, refer to the assignment information stored in the base station storage unit and sequentially or periodically determines the wide-area communication resource assignment having the wide-area communication terminal that has transmitted the inter-vehicle communication connection information assigned to the portion of the wide-area communication resource assignment which is determined based on the assignment information.