GRGPS - Geographic Routing based on Greedy Perimeter Stateless Position for Multi- Hop Mobile Ad-hoc Networks
D. ArockiaNancy, P. Anbumani · 2013
In Ad-hoc networks, we make the forwarding decisions based on the geographical position of the nodes. Each and every node knows its exact position of its one hop neighbour in order to forward packets. Driven by this issue, Geographic routing has been introduced in mobile ad hoc networks and proved to provide drastic performance improvement over strictly routing by address-centric schemes. While geographic routing has been shown to be correct and efficient when location information is intended target, its performance accordingly to location errors is not well understood. In Geographic routing, Greedy Perimeter Stateless Position routing forwarding is used to select next hop forwarder with the largest positive progress towards the destination. We identify two main problems, named LOOP and LLNK, which are caused by mobility-induced location errors. In this paper, we study the effect of inaccurate location information caused by node mobility under a rich set of scenarios and mobility models. According by ns-2 simulations, we perform two mobility prediction schemes neighbour location prediction (NLP) and destination location prediction (DLP) to mitigate these problems.