Secure Position based Opportunistic Routing for Mobile Ad Hoc Networks
Aju Jacob · 2013
Mobile Ad Hoc Networks (MANETs), which provide data networking without infrastructure, represent one kind of wireless networks. A MANET is a self-organizing and adaptive wireless network formed by the dynamic gathering of mobile nodes. Due to the mobility of mobile nodes, the topology of a MANET frequently changes and thus results in the disability of originally on-the-fly data transmission routes. The dynamic properties of MANETs are therefore challenging to protocol design. This paper proposes a Position Based Opportunistic Routing Protocol (POR) and Void Handling Based on Virtual Destination (VHVD) which solves the problem of delivering data packets for highly dynamic mobile ad hoc networks in a timely and reliable way. A security scheme is proposed to minimize the number of black holes or malicious nodes or selfish nodes in the path to destination, thus the number of data packet dropping can be minimized. This protocol takes advantage of the stateless property of geographic routing and the broadcast nature of wireless medium. When a data packet is sent out from the source node, some of the neighbor nodes will be the forwarding candidates, and it will forward the packet if it is not forwarded by the best forwarder in a particular period of time. By utilizing such in-the-air backup, communication is maintained without being interrupted.