Reliable Data Delivery in MANET Using POR

Abstract

In Mobile Ad hoc Networks, since nodes move arbitrarily the network topology
changes frequently and unpredictably. This paper address the problem of reliable data
delivery in MANET, especially in a challenged environment with high mobility remains an
issue. To deal with such issue, a novel position based opportunistic routing protocol (POR)
is proposed to efficiently maintain uninterrupted communication. When a node sends or
forwards a packet, the neighbor nodes that have overheard the transmission will serve as
forwarding candidates, and forwards the packet if it is not relayed by the specific best
forwarder. In this way, as long as one of the candidates succeeds in receiving and
forwarding the packet, the data transmission will not be interrupted. To handle the
communication voids, a virtual destination based void handling scheme is further proposed
to enhance the robustness of POR. Simulations are done in NS2 to confirm the effectiveness
and efficiency of POR in high mobility networks