1. Assistant Professor, Computer Science and Engineering, M. Kumarasamy College of Engineering, Karur, India
2. Principal, Er.Perumal Manimekalai College of Engineering, Hosur, India
Abstract: Nodes cooperate to provide connectivity and operate without centralized administration in a Mobile Ad Hoc Network (MANET). Routing is crucial for any network as nodes transmit traffic in multihop fashion since communicating nodes might be out of range. Consequently, each node in the network not only works for itself, but must also be cooperative with other nodes. The presence of selfish nodes degrades the security and quality of service (QoS) due to its non-cooperative nature. Secure and reliable communications in MANETs due to the presences of selfish/malicious nodes, unpredictable wireless media, and host mobility is widely researched. In this paper, the concept of trust is incorporated in the routing protocol to enhance the security and QoS of the network. Managing trust in a MANET is challenging when cooperation is critical to achieving system goals. Ad hoc On Demand Distance Vector (AODV) routing protocol is enhanced with the addition of trust metrics in this study. Simulations demonstrate the effectiveness of the enhanced AODV to perform satisfactorily even in the presence of selfish nodes.
[P. Saravanan, S. Chitra. Novel Security Mechanism to Improve QOS in MANET. Life Sci J 2013;10(7s):505-509]. (ISSN: 1097-8135). http://www.lifesciencesite.com. 78
Keywords: Mobile Ad hoc Networks (MANETs), Ad hoc On Demand Distance Vector (AODV), Selfish Nodes, Trust.