An Enhanced OLSR Routing Protocol based on Node Link Expiration Time and Residual Energy in Ocean FANETS

Abstract

Due to complex and varied environment in the sea and high mobility of nodes, establishing a communication connection between UAVs is a difficult point. In addition, these existing routing protocols designed for mobile ad hoc networks (MANETs) or vehicle ad hoc networks (VANETs) could not play a good role in communication in Flying ad hoc Networks (FANETs). In this paper, we put forward a new form of the Optimized Link-State Routing (OLSR) protocol: it can suit rapid dynamic topology changes and prevent the interruption of communication. The key idea is to make full use of Global Positioning System (GPS) information to calculate node link expiration time and take into account residual energy. The improved multi metric ETX (Expected Transmission Count) simulation in OLSR is carried out in the NS-3 simulator. So, this paper reports the experimental results of routing protocols carried by small flying robots in marine scenes, and these numerical results show that the new protocol is significantly superior to the traditional OLSR in terms of packet transmission rate, End-to-End delay and routing overheads, providing reliable communication in the ocean FANETs.