On Probability of Link Availability in Original and Modified AODV, FSR and OLSR Using 802.11 and 802.11p

TL;DR

This paper introduces a framework for assessing link availability in MANETs and VANETs, evaluating routing protocols AODV, FSR, and OLSR under various conditions, with AODV showing superior performance.

Contribution

It presents a novel link availability framework and compares modified routing protocols in MANETs and VANETs using extensive simulations.

Findings

AODV outperforms FSR and OLSR in key metrics.

Modified parameters improve protocol efficiency.

Performance varies with network scale and mobility.

Abstract

Mobile Ad-hoc NETworks (MANETs) comprise on wireless mobile nodes that are communicating with each other without any infrastructure. Vehicular Ad-hoc NETwork (VANET) is a special type of MANETs in which vehicles with high mobility need to communicate with each other. In this paper, we present a novel framework for link availability of paths for static as well as dynamic networks. Moreover, we evaluate our frame work for routing protocols performance with different number of nodes in MANETs and in VANETs. We select three routing protocols namely Ad-hoc On-demand Distance Vector (AODV), Fish-eye State Routing (FSR) and Optimized Link State Routing (OLSR). Furthermore, we have also modified default parameters of selected protocols to check their efficiencies. Performance of these protocols is analyzed using three performance metrics; Packet Delivery Ratio (PDR), Normalized Routing Overhead (NRO) and End-to-End Delay (E2ED) against varying scalabilities of nodes. We perform these simulations with NS-2 using TwoRayGround propagation model. The SUMO simulator is used to generate a random mobility pattern for VANETs. From the extensive simulations, we observe that AODV outperforms among all three protocols.