Performance Comparison of Modified AODV-ETX with AODV and AODV-ETX Routing Protocol in an MANET

Abstract

Expected Transmission Count (ETX) is one of the many metrics developed in the ad hoc routing protocol. Most research, studied on modified AODV-ETX by varying the value of MY ROUTE TIMEOUT (MRT) and ACTIVE ROUTE TIMEOUT (ART) values in the RREQ and RREP packet headers. Those studies resulted the optimum value of MRT and ART was 80 seconds. These results has not shown optimal performance of AODV and AODV-ETX. This paper discusses performance comparison of modified AODV-ETX with AODV and AODV-ETX on MANET. The result is that the throughput on the modified AODV-ETX has increases 5.72 %, PDR increases 5.80 %, 4.31 % overhead reduction, 10.19 % increase on end to end delay, and 3.09 % increase on route discovery process.