Inter-vehicle communication device

摘要

A leading vehicle group 1 transmits divided data 71 and 72 obtained by dividing vehicle information 7. Data transfer vehicle groups 2 and 3 transfer the divided data 71 and 72 to a data composite vehicle group 4 and to following vehicle groups 5 and 6. The data composite vehicle group 4 transfers composite data 73 obtained by XORing the divided data 71 and 72 to the following vehicle groups 5 and 6. The following vehicle group 5 XORs the divided data 71 received from the data transfer vehicle group 2 with the composite data 73 received from the data composite vehicle group 4 to restore the unreceived divided data 72.

主权项

1. An inter-vehicle communication device comprising:
a communicator to exchange data between its own vehicle and other vehicles between which inter-vehicle communication is established; a vehicle information acquirer to obtain vehicle information about its own vehicle; a divided data generator to create a plurality of divided data by dividing the vehicle information the vehicle information acquirer obtains; an XOR circuit to create composite data by XORing a plurality of divided data obtained from other vehicles via the communicator, or to restore remaining divided data by XORing a part of the divided data with the composite data obtained from other vehicles via the communicator; and a controller to switch a communication control method in accordance with a vehicle group, to which its own vehicle belongs, in an inter-vehicle communication network including a leading vehicle group, a data transfer vehicle group capable of inter-vehicle communication with the leading vehicle group, a data composite vehicle group capable of inter-vehicle communication with the data transfer vehicle group, and a following vehicle group capable of inter-vehicle communication with the data transfer vehicle group and the data composite vehicle group, wherein the controller: causes, when its own vehicle belongs to the leading vehicle group, the vehicle information acquirer to obtain the vehicle information, the divided data generator to create a plurality of divided data, and the communicator to transmit the divided data to the data transfer vehicle group; causes, when its own vehicle belongs to the data transfer vehicle group, the communicator to receive the plurality of divided data to restore the vehicle information, and causes the communicator to transmit a part of the divided data to the data composite vehicle group and to the following vehicle group; causes, when its own vehicle belongs to the data composite vehicle group, the communicator to receive all the divided data the data transfer vehicle group transmits to restore the vehicle information, causes the XOR circuit to create the composite data, and causes the communicator to transmit the composite data to the following vehicle group; and causes, when its own vehicle belongs to the following vehicle group, the communicator to receive the part of the divided data the data transfer vehicle group transmits and the composite data the data composite vehicle group transmits, causes the XOR circuit to restore the remaining divided data, and restores the vehicle information from the part of the divided data and the remaining divided data.