| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a communication apparatus, system, and method, which transfers a packet according to a road line form without using road-line form information while suppressing unnecessary packet transfer. <P>SOLUTION: A communication apparatus 100 includes: a position information acquisition unit 110 that obtains information on the current position thereof and the traveling direction of a vehicle unit 200; a receiving unit 120 that receives a packet containing transfer information indicating the position of the sender and the position of a destination from a sender; a communication control unit 130 that suppresses packet transfer in the case where the current position is not contained in a region from the position of the sender to the position of the destination; an information processing unit 140 that extracts, as a corrected position, a position specified by the traveling direction out of positions separated from the current position by a residual distance between the position of the destination and the current position in the case where the current position is located in the region; and a transmitting unit 150 that transmits a packet containing the transfer information in which the position of the destination is changed to the corrected position and the position of the sender is changed to the current position. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
