A Framework for Routing Misbehavior Recognition in MANETS

Mobile Ad-hoc Networks (MANETs) operate on the basic underlying assumption that all participating nodes fully collaborate in self-organizing functions. However, performing network functions consumes energy and other resources. Therefore, some network nodes may decide against cooperating with others. These nodes are called selfish / misbehaving nodes. Misbehavior of suspicious nodes in MANETs is detected, and the information is propagated throughout the network, so that the misbehaving node will be cut off from the rest of the network. We propose a network-layer acknowledgmentbased scheme, termed the 2ACK scheme, which can be simply added-on to any source routing protocol. The proposed scheme detects misbehaving nodes, and then seeks to alleviate the problem by notifying the routing protocol to avoid them in future routes. Our results show that proposed scheme reasonably improves the packet delivery ratio, with some additional routing overhead. Keywords—MANET, selfish routing, misbehaving