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Volume & Issue no: Volume 3, Issue 9, September 2014

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Title:
Detecting and Managing Selfish Nodes over MANET
Author Name:
Prof. Shobha Lolge, Neha Baheti
Abstract:
ABSTRACT In wireless ad hoc networks, all nodes altogether cooperate to provide network services to users. Due to the limited bandwidth or communication range, data packets are forwarded through multiple medium of nodes before they reach the destinations. If a node always serves as a medium to transmit the packets, it may soon finish up its own energy and other resources constraints. Therefore, some nodes behave using a selfish approach; they try to avoid forwarding the data packets. Such type of selfish behavior would often probably cause the network to break down. Selfish nodes are commonly occurred within ad hoc networks since they are managed by different resources. The performance of ad-hoc network gets degraded due to presence of selfish node which causes huge packet loss, decreased throughput, minimize data accessibility, increased query delay, high communication cost, low delivery ratio etc. In a mobile ad hoc network, the mobility behavior and resource constraints of mobile nodes may often lead to network partitioning or performance degradation. Many data replication techniques have been proposed to minimize performance degradation. Most of the nodes assume that all mobile nodes collaborate fully in terms of sharing their memory space. But in reality, however, some nodes may selfishly decide only partially to cooperate, or not at all, with other nodes. These selfish nodes could then decrease the overall data accessibility in the network. Here, we examine the impact of selfish nodes in a mobile ad hoc network from the view of replica allocation. We term this as selfish replica allocation. In particular, we have used a selfish node detection algorithm that considers partial selfishness and novel replica allocation techniques to properly cope with selfish replica allocation. The carried out simulations demonstrate the proposed approach outperforms traditional cooperative replica allocation techniques in terms of communication cost according to hop count, throughput, and packet delay and selfishness alarm. Keywords: MANET, Node Selfishness, Replica allocation, Network efficacy
Cite this article:
Prof. Shobha Lolge, Neha Baheti , " Detecting and Managing Selfish Nodes over MANET" , International Journal of Application or Innovation in Engineering & Management (IJAIEM) , Volume 3, Issue 9, September 2014 , pp. 031-035 , ISSN 2319 - 4847.
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