Performance Analysis of LTE and DSRC: An Intelligent safety application for Vehicular communication

Nagarjuna Karyemsetty,K Raja Kumar

Various wireless communication systems exist, which enable a wide range of applications and use cases in the Vehicular environment. Dedicated short-range communication (DSRC) and 4G-LTE are two widely used candidate schemes for safety applications. It is thus of great necessity to compare these two most viable communication standards and clarify which one can meet the requirements ofmostV2Xscenarioswith respect to road safety, traffic efficiency, and infotainment, each with its own set of functional and performance requirements. In pursuance of assisting drivers to travel safely and comfortably, several of these requirements have to be met simultaneously. A dedicated short-range communication/long-term evolution based vehicular system is developed to support the vehicle-to-vehicle, vehicle-to-RSUand vehicle tovehicle via 4G communication for the safety of vehicles and drivers. The implementation of the heterogeneous vehicle-to-vehicle/vehicle-to-RSU communication module is based on an IEEE 802.11p compliant communication module, integrated with the long-term evolution module. Three Connected Vehicle application scenarios are set as Collision Avoidance, Traffic Text Message Broadcast, and Multimedia File Download, respectively. A detailed performance evaluation study of the standards is given for a variety of parameter settings such as beacon transmission frequency, vehicle density, and vehicle average speed. Both standards are compared in terms of delay, reliability, scalability, and mobility support in the context of various application requirements. Furthermore, through extensive simulation-based study, we validated the effectiveness of both standards to handle different application requirements. Simulation results reveal that IEEE 802.11p based vehicle-to-vehicle communication is suitable for safety time critical application when compared to LTE and unstable in the non-line-of-sight conditions, while the cellular-based performs better in the transmission reliability but has larger latency than IEEE 802.11p. IEEE 802.11p offers acceptable performance for sparse network topologies with limited support and performs well in LOS. LTE out performs in NLOS. Hybrid vehicular network best performs the vehicular application.

Volume 12 | Issue 6

Pages: 1959-1972

DOI: 10.5373/JARDCS/V12I2/S20201401