| 摘要 |
Disclosed is a credibility detection-based security routing protocol in a vehicular ad hoc network. The protocol first enables vehicle nodes having a consistent movement trend to work on the same service channel according to a multi-channel selection monitoring mechanism, and realizes data monitoring and transmission tasks on the same service channel; the vehicle nodes acquire a routing packet forwarding behaviour of a neighbouring node by means of the monitoring of the channel so as to establish direct credibility of the neighbouring node; and at the same time, a received hello message packet periodically sent by the neighbouring node is detected, and recommended credibility is obtained by means of a node credibility list carried in the packet, so that the credibility list of the neighbouring node can be calculated and maintained, so as to assist the node to perform a routing decision. The routing protocol of the present invention can maintain a relatively stable communication link in a vehicular environment having strong topological change, and has a relatively high delivery rate and a relatively low transmission delay; and at the same time, by means of credibility detection, the behaviour of a node maliciously discarding a routing packet can be effectively avoided. |
