1720 hits

The objective of this study is to propose a practical solution to help improve the performance of the routing discovery process in Mobile Ad-hoc Networks (MANETs). The study involved the development of two new routing protocols, namely Less-Flooding Ad-hoc On-demand Distance Vector (LF-AODV) and Route Stability Aware (RSA) protocols, with the aim of reducing the number of transmitted route request (RREQ) packets and link failures during the route discovery cycle. Accordingly, a series of simulations carried out with the NS-2 simulator to examine the performance of such new protocols for 100 mobile nodes in an area measuring 600 meters x 600 meters. The performance criteria were based on routing overhead (the total number of packets transmitted by a source node during the route discovery process), average end-to-end delay (the average time taken by a packet to arrive at a destination node from a source node), and network lifetime (time taken until all nodes in a network die .....

1515 hits

Ad hoc on-demand distance vector (AODV) is one of the commonly used reactive routing protocols in mobile ad hoc network (MANET) as it can achieve relatively better communication performance. However, AODV can lead to heavy routing overhead and additional delay due to the flooding broadcast of route request (RREQ) packets during the route discovery cycle. Additionally, the multiple route reply (RREP) packets in response to a single RREQ can also contribute to overhead and additional delay. Thus, a new algorithm called Less Flooding-AODV (LF-AODV) was proposed to reduce the broadcasted RREQ and the transmitted RREP during the route discovery cycle by decreasing the number of nodes involved in the route establishment phase. A simulation test was carried out to compare the difference in performance between LF-AODV and AODV algorithms. The simulation test revealed that the steps of the route discovery process in LF-AODV were significantly reduced, thus improving its performance in terms of .....

5 hits