Performance Analysis for City, Highway, and Rural Area in Vehicle-to-Vehicle Network

摘要

In the Vehicular ad hoc networks, safety applications are capable of sending and processing messages in real time is the most notable difference between safety and non-safety application. This message is also known as packet where information is transmitted at regular interval. To tell the neighbors about the vehicle profile the packet are generated and broadcasted consecutively. The information about the vehicle such as speed, acceleration, coordination, and the next coordination, etc. is contained in packets. The Vehicular ad hoc networks are vigorously changing the packet needs to be sent regularly. Because of safety-related issues, this is needed which can only be solved by the real-time information. However, due to increasing the packet and some environmental factors, if the channel becomes overloaded, there will be an increase in the packet collision probability and communication get a breakdown by destroying packet or information. Hence, the probability of successfully received the packets and the environmental condition is an important parameter for a Vehicular ad hoc networks based system. Because the Vehicular ad-hoc network propagation is strongly affected due to varying nature of the environment. The radio propagation path loss models use mean additional attenuation sophisticated fading model and do not consider the obstacle caused due to obstacles of vehicles in Line of Sight of transmitting and receiving vehicles/devices. This affects the attenuation signal at receiving vehicles. Therefore, we present an obstacle based radio propagation model that considers the effect caused by the presence of obstructing vehicles in Line of Sight. The experiment is conducted to evaluate the model under different environmental conditions (City, Highway, and Rural) by varying vehicle density to study the effect of throughput operation and packet collision considering environmental factor for multi-channel DSRC based Vehicle-to-Vehicle communication in IEEE 802.11p considering distributed slotted Medium Access Control protocol. The performance of the model was evaluated in terms of throughput, collision, and packet delivery ratio. City environment achieves a 15.04% average packet delivery ratio performance improvement over the other two environment considering varied vehicles. The overall result shows that the proposed obstacle based throughput model is efficient considering varied density.