INTER-VEHICLE COMMUNICATION SYSTEM AND INTER-VEHICLE COMMUNICATION DEVICE

摘要

An inter-vehicle communication device that is connected to a wide-area communication terminal determines a dedicated short-range communication resource assignment by using a wide-area communication resource assignment that is assigned to the wide-area communication terminal. Since a plurality of terminals are not assigned to the same resource block in the wide-area communication resource assignment, the dedicated short-range communication resource assignment determined by using the wide-area wireless communication resource assignment can also prevent a plurality of terminals from being assigned to the same time slot. The wide-area communication resource assignment is essentially necessary for the communication between a base station communication device and the terminals. Since the wide-area communication resource assignment which is necessary is used to determine the dedicated short-range communication resource assignment, a limit to the amount of downlink data can be reduced.

主权项

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 and communicably connected to wide-area communication terminals in the mobile station communication devices, wherein the base station communication device comprises a wide-area resource transmitting means for assigning 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 assigned wide-area communication resources to the communication area; the wide-area communication terminal comprises notification means for notifying the inter-vehicle communication device which is communicably 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 unit comprises assignment acquiring means for acquiring the wide-area communication resource from the wide-area communication terminal, transmission timing deciding means for deciding a transmission timing based on the acquired wide-area communication resource, and data transmitting means for transmitting data based on the decided transmission timing.