Performance Analysis of Broadcasting Methods in Geocast Region for Vehicular Ad Hoc Networks

In this paper, performance analysis of different broadcasting methods i.e. flooding or blind broadcast and probabilistic broadcasting inside the geocast region has been done. Our objective is to provide a comparative analysis between flooding and probabilistic methods with varying number of nodes in Vehicular Ad hoc Networks. Simulations have been conducted using the NS-2 simulator. For result analysis, we have used awk programming and Matlab. Different values of probability for probabilistic broadcast method have been considered to investigate an appropriate value that may give best results. The results show that probabilistic broadcasting method achieves maximum packet delivery ratio is 83.5 % when number of node is 196. In, sparsely populated network the packet delivery ratio for all cases is low. The minimum value of PDR obtained for sparsely populated network is 14.95%. From the result, it has also been observed that for better delivery ratio, message broadcasting should be done with minimum value of p for both the sparse and dense network.