A Grudger Based AIS Approach to Coerce Selfish Node Cooperation in MANET

Mobile Ad hoc Networks (MANET) utilize multi-hop communications to forward packets across the network consuming power, processing, and memory resources. In an ideal MANET the nodes are unselfish and forward packets on demand. The real-time, ad hoc and open characteristics of MANET make it susceptible to selfish and malicious nodes affecting performance. In a MANET, some of the nodes may decide to selfishly cooperate or to not cooperate, with other nodes. The selfish nodes re- duce the overall effectiveness of network communications, decrease packet delivery rates and increase packet delivery time. This paper investigates an approach to harness selfish node energy and transmission capacity to share network load. This paper utilizes a Grudger Artificial Immune Systems based trust model to study the impact of selfish nodes in the network. The proposed algorithm demonstrates an increase in the packet delivery ratio