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Performance Analysis of EDCA for IEEE 802.11p/DSRC Based V2V Communication in Discrete Event System

The IEEE 802.11p/DSRC protocol is considered to be a viable technology for inter-vehicle safety communications. In order to support the control algorithms employed by autonomous vehicles, low packet delay is a requirement for Vehicle Ad-Hoc Networks (VANETs). In a VANET, vehicle-to-vehicle (V2V) communications play an important role for ensuring a safe and reliable autonomous driving environment since safety messages are transmitted via V2V communication. The Wireless Access in Vehicular Environment (WAVE) protocol includes the Enhanced Distribution Channel Access (EDCA) mechanism to ensure the Quality of Service (QoS). Therefore, it is necessary to create accurate simulations that guarantee the V2V communications will work as described in the protocols. In this paper, we will present a newly designed VANET simulator based on a Discrete-Event System in MATLAB and a series of simulations of the MAC/PHY layer for the DSRC/WAVE V2V network. The simulation results for the delay are compared with previous papers in order to verify the simulator.