Análise do efeito dos parâmetros do ambiente em protocolos de roteamento para redes veiculares.

Abstract

Increasing the usability of a vehicle network depends on several factors to meet the requirements of data transfer and package delivery. In this context, networks may differ in node velocity, geographical positioning and environmental variations. The choice of each parameter in the simulation is fundamental in obtaining more accurate and realistic data to the simulated environment. The objective of this work is to analyze the effect of the environment parameters on routing protocols in vehicular communication. Initially, a systematic survey was made to emphasize the main parameters used in the literature over the last eleven years in conferences and periodicals. Based on the data collected in the initial study, software and simulation parameters were defined to compare the performance of the OLSR (Optimized Link State Routing) and GPSR (Greedy Perimeter Stateless Routing) routing protocols. From the data collection, it was observed that the packet delivery rate metric provided the best results in the scenario and the OLSR protocol was superior to the GPSR in most scenarios. However, the OLSR protocol presented the largest delay values compared to the GPSR protocol. The OLSR protocol obtained the highest values of overhead because they tend to generate a high load of routing messages, and the nodes continuously send messages, even when they do not participate in the communication.