Reliable Link-Based Routing Protocol for Highly Dynamic Mobile Adhoc Networks

Traditional topology-based MANET routing protocols use stateful routing which increases the processing, communication and memory overheads. The high mobility of nodes in MANETs makes it difficult to maintain a deterministic route. To overcome this, stateless geographic routing protocols which ensure reliable data delivery have been proposed. It is found that link instability can be a major factor for unreliable data delivery. Driven by this issue, Link and Position based Opportunistic Routing (L-POR) protocol which chooses a forwarder based on the reception power of a node has been proposed. A back-up scheme is also proposed to handle communication holes. Simulation results show that the proposed protocol achieves excellent performance even under high node mobility. KeywordsMobile Adhoc Networks, reliability, opportunistic routing, mobility, link stability.