Abstract
Road capacity, traffic safety, and energy efficiency can be extremely improved by forming platoons with a small intra-vehicle spacing. Automated controllers obtain vehicle speed, acceleration, and position through vehicular ad hoc networks (VANETs), which allows the performance of platoon communication to make a significant impact on the stability of the platoon. To the best of our knowledge, there is not much research relating to packet delay and packet dropping rate of platoon communication based on the IEEE 802.11p broadcasting. In this paper, we introduce platoon structure model, vehicle control model, and communication model for a single platoon scenario. By utilizing Markov process and M/G/1/K queuing theory, we put forward an analytical model to assess the property of intra-vehicle communication. The analytical model is validated by simulations and the influence of communication parameters on intra-vehicle communication performance are discussed. In addition, the experimental results demonstrate that the IEEE 802.11p-based intra-vehicle communication guarantee the stability of platoon.
Highlights
With the support of cooperative adaptive cruise control (CACC) for automated driving and the assist of vehicle ad-hoc network (VANETs) for intra-vehicle communication, a series of succeeding vehicles form a platoon [1,2]
Intra-vehicle communication is important for a platoon to maintain stability, which is due to the need for frequent and reliable exchange of information between vehicles in a platoon
The control channel is responsible for transmitting safety information, while service channels are used for non-safety applications
Summary
With the support of cooperative adaptive cruise control (CACC) for automated driving and the assist of vehicle ad-hoc network (VANETs) for intra-vehicle communication, a series of succeeding vehicles form a platoon [1,2]. Bernoullian random losses and analyzed the impact of the packet error rate on the failure rate of the maneuver, proved that packet loss mainly affect the maneuver from a coordinating point of view [20] These approaches are not perfect, because the time-varying delay and packet loss rate are caused by rapid changes in network topology, the condition of communication channels, and the mobility of vehicles in platoon. Our work concentrates on the performance analysis of the IEEE 802.11p broadcast which is used to convey control messages on the CCH for intra-vehicle communication under a VANETs environment. The manuscript is organized as follows: Section 2 overviews the related research on performance analysis of vehicle communication in VANETs. In Section 3, the concept of platoon including platoon structure model, vehicle control model and communication model are introduced.
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