Effect of Buildings in VANETs Communication: Performance of OLSR Protocol for Video Streaming Application

In recent years, Vehicular Ad-hoc Networks (VANETs) have emerged as a unique type of MANETs. VANETs are an important component of the Intelligent Transportation Systems (ITS). They can be utilized to guarantee road safety, avoid potential accidents and create new forms of inter-vehicle communications. In this paper, we investigate the performance of OLSR protocol for video streaming application. The simulations are conducted in urban environment in two scenarios with and without buildings. We consider 802.11p standard and send multiple video streaming flows over UDP. We use throughput, delay and jitter as evaluation metrics. Based on simulation results, we found that OLSR can create links when buildings are not considered, but when buildings are considered some islands are created in the network and there are a lot of disconnections.