A survey oj various approaches to detect selfishness in wireless ad-hoc networks

Ad hoc is a Latin word which describes solutions for this or specific purpose. In the world of computer network, an ad hoc network refers to a network connection which established for a single session and does not require wireless base station; they are on-the-fly networks. Energy, security and selfishness have been amongst the most popular issues for researchers in recent years. Selfish node is stated as a node that conserves its battery power and other resources and do not forward packets to other node but uses the service provided by other nodes. Due to dynamic nature of ad hoc networks, it is difficult to find out whether the node intentionally or unintentionally behaves as a selfish node. Such selfish nodes tend to save their energy in terms of CPU power, battery and bandwidth while they are assigned the work of forwarding the data to other nodes. In this Paper, we have carried out survey of various existing approaches to detect and prevent selfishness different kinds of ad hoc networks and describe the future scope regarding to that method. The literature survey depict that the existing schemes can be further modified to devise more reliable solutions to mitigate such selfish nodes.