Study of Techniques used for Detection of Selfish Nodes in Mobile Ad hoc Networks
Keywords:
Mobile Ad hoc network(MANET), Dynamic source routing, Selfish nodes in MANET, Watchdog, PathraterAbstract
A MANET(Mobile Ad hoc network) consists of mobile
nodes connected through wireless links. MANETs are selfconfiguring networks without having fixed infrastructure. Each
node has to rely on other nodes to forward its data packets.
Mobile ad hoc networks can function properly only if
participating nodes collaborate in routing and forwarding. Since
most of the nodes are constrained by battery power and
computing resource, few nodes may refrain to cooperate and do
not forward packets destined for other nodes. This leads to
degradation of the network performance. Selfish nodes do not
consume any energy such as battery power, CPU power and
bandwidth for retransmitting the data packets of other nodes
and they reserve them for themselves. In this paper we gi ve an
overview of Credit based techniques and reputation based
schemes used for detection of selfish nodes.