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Application Reliability Analysis of Density-Aware Congestion Control in VANETs

Vehicle to vehicle wireless communication is regarded as a key component for improving safety on the road. There has been increasing interest in addressing the scalability issue with a large literature that has been proposed to mitigate packet congestion problem. LIMERIC is a well-known congestion control protocol which was adopted by the current ETSI standardization bodies to be applied in the future deployment of VANETs. In this study, the objective is to evaluate the application reliability of using the density information in this problem. In this paper, we compare LIMERIC to LIMERIC-D to provide an answer to the question whether density estimation can improve the performance of the congestion control strategies regarding application reliability. The simulation results shows the effectiveness of the use of the density information to improve the performance of congestion control protocols in VANETs.