earticle

영어

The VCM (Vessel Communication Manager) proposed in this paper consists of ARP (Azimuth based Routing Protocol) and NATF (Network Attack Traceback Facility). The ARP can transmit accident information from a source to a headquarter rapidly and accurately by using Azimuths. It designs the Ac-RREQ message that appends an azimuth, a cumulation S/N, and a standby packet count field to the exiting RREQ message and the Ac-RREP message that appends an azimuth and a cumulation S/N field to the existing RREP message. It adjusts the transmission scope of the Ac-RREQ message with azimuths and decides the optimal path by judging the priority of Ac- RREP with the standby packet count and the cumulation S/N. Therefore, its simulation shows that the transmission time of the Ac -RREQ message is reduced more largely than the existing RREQ by using azimuths. In collision, as it transmits data through optimal paths, not only unexpected accidents are prevented with an urgent action, but also the life of nodes is prolonged due to the energy- saving of nodes. And, the NATF can trace back network attacks happening inter-vessel by recording the routes of routers with marking and logging function and can reduce a traceback overhead because of not marking all the packets.