Reputation management for efficient message transmission in vehicular AD HOC networks

In vehicular ad hoc networks (VANETs), individual vehicles cart share information, and resources in support of useful applications such as real-time traffic navigation., emergency vehicle warning systems, and car accident ’notification. A key factor in VANET application success is good behavior on the part of each network node that in, every node (vehicle) must share information, and resources. In this paper we describe a reputation, management system for detecting poorly behaving nodes in order to isolate them from properly performing nodes. Since our proposed system is fully distributed (i.e., lacks a centralized control node), it is more scalable and suitable for VANETs. In our proposed system, nodes monitor packets that are forwarded to their neighboring nodes, and use gathered information to calculate reputation values for each neighbor. These values are used to identify and select forwarding nodes, and to notify neighbors about the presence of nodes with low reputation, values. Re nulls from experiments indicate that our proposed system is capable of achieving a packet delivery ratio that is 10% higher than that produced by the T-GPSR protocol, with low communication overhead.