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ABSTRACT
Mobile Adhoc Networks (MANETs) are characterized by bandwidth constrained links, multiple hops and dynamic topologies. Routing should provide quality of service in the Mobile Adhoc networks is a highly challenging task. In this paper, we discussed the unicast routing in MANETs with enhancements to the Temporally Ordered Routing Algorithm (TORA).Temporally Ordered Routing Algorithm (TORA) is a highly scalable routing protocol for MANETs. TORA is dependent on the services provided by the internet encapsulation protocol to effectively carry out with its three main functions: Route creation, Route maintenance and Route erasing. Route discovery in TORA is done in a cooperative manner with intermediate nodes contributing to the route generation from one node to another. Precision in the route build-up demands that all network nodes portray persistent benevolent behaviour. This is, however, not always possible to achieve and so a number of malicious nodes participate in the route discovery process only to sabotage the network by violating the protocol. This paper will give the novel mechanism for establishing trust in ad-hoc networks that execute the Temporally Ordered Routing Algorithm (TORA) Protocol. The main objective is to limit control message propagation in the highly dynamic mobile computing environment. Each node has to explicitly initiate a query when it needs to send data to a particular destination.
JEL Classification: D85; L14.
Keywords: Mobile Adhoc Networks; Temporally Ordered Routing Algorithm (TORA); MANET.
1.INTRODUCTION
The proliferation of mobile computing and communication devices (e.g., cell phones, laptops, handheld digital devices, personal digital assistants) is driving a revolutionary change in our information society (IIyas, 2003). The studies and developments in wireless networking have primarily been driven by success of the dominant cellular architecture model. Thus, although significant progress has been achieved in the thorough understanding of wireless networking characteristics through the study of cellular systems, many of the developments are still not directly applicable to satisfy the needs of the wireless systems that require network architectures which may not follow the cellular paradigm. Such networks, sometimes referred to as wireless ad-hoc, or peer-to-peer, or multihop networks, consists entirely of wireless and often mobile nodes that may communicate either directly or via multiple hop paths that require the support of intermediate nodes to achieve connectivity. Wireless Adhoc networks which have node mobility...