The NS-3 simulator implementation of ETX metric within AODV protocol

Wireless ad hoc networks (WANETs) are one of the most used networks in everyday life. In order to provide users with fast throughput and small delay, many protocols and routing metrics for WANETs are proposed in last decades. The use of computer simulation is a common practice to test performance of the proposed protocols in various network scenarios and to evaluate their significance and practical value. One of the most recent but very frequently used discrete-event network simulator is Network Simulator 3 (NS-3). This paper aims to contribute to the development of NS-3 simulator by proposing an implementation of the most used metric in WANET protocols, the Expected Transmission Count (ETX) within Ad-hoc on demand distance vector (AODV) protocol. The source code of this implementation is publicly available.