Performance Evaluation for LTE-V based Vehicle-to-Vehicle Platooning Communication

Abstract

With the raising demand for autonomous driving, vehicle-to-vehicle communications becomes a key technology enabler for the future intelligent transportation system. Based on our current knowledge field, there is limited network simulator that can support end-to-end performance evaluation for LTE-V based vehicle-to-vehicle platooning systems. To address this problem, we start with an integrated platform that combines traffic generator and network simulator together, and build the V2V transmission capability according to LTE-V specification. On top of that, we simulate the end-to-end throughput and delay profiles in different layers to compare different configurations of platooning systems. Through numerical experiments, we show that the LTE-V system is unable to support the highest degree of automation under shadowing effects in the vehicle platooning scenarios, which requires ultra-reliable low-latency communication enhancement in 5G networks. Meanwhile, the throughput and delay performance for vehicle platooning changes dramatically in PDCP layers, where we believe further improvements are necessary.Index Terms-LTE-V, platooning, NS-3, SUMO A. Summary of Platooning and LTE-VVehicle platooning, by allowing vehicles to travel together, is shown to maximize highway throughput, reduce the traffic drug, and improve driving safety and comfort levels of automated driving simultaneously [16]. In order to support vehicle platooning capability, on board unit (OBU) with direct V2V communication ability to interchange important parameters in automated longitudinal control systems will be compulsory. In addition, as vehicle platooning systems often operate at a relatively high speed and the inter-vehicle distances need to keep small for traffic efficiency, a high reliable and low latency communication protocol is therefore required.Due to the similarity between device-to-device (D2D) and V2V communication, the sidelink mode 1 and mode 2, previously supporting D2D communication, have been upgraded to mode 3 and mode 4 for V2V communication in LTE R14, where mode 3 focuses on network supported vehicular communication and mode 4 targets to provide V2V direct transmission capability. With vehicle platooning scenario, we mainly consider the V2V communication in this paper and summarize the main features of the sidelink mode 4 in the following.

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