Secure connectivity in platoon-based vehicular networks
Qiu Zhexian,，Wang Xiaowei
(College of Information Engineering， Shanghai Maritime University,， Shanghai 201306,， China)
Abstract： Platoon-based driving has been proved to effectively improve road capacity and energy efficiency. On this basis, this paper investigates wireless connectivity of platoon-based vehicular networks with the presence of eavesdroppers. Three types of secure connectivity probability, intra-platoon secure connectivity probability, extro-platoon secure connectivity probability and network secure connectivity probability, are defined and derived to respectively characterize the network constituted by a single platoon, a double platoon and multiple platoons. Simulation results show that system parameters affecting connectivity performance include transmission range, number of eavesdroppers and vehicle density. Particularly, secure connectivity probabilities are maximized by an optimal vehicle density.
Key words : vehicular network；platoon,；physical-layer security,；secure connectivity
0 引言
智能交通系統(tǒng)（Intelligent Transportation System, ITS）是當前交通行業(yè)發(fā)展的重要方向，智能網(wǎng)聯(lián)汽車依靠車對車（Vehicular to Vehicular, V2V）和車對基礎(chǔ)設(shè)施（Vehicular to Infrastructure, V2I）通信進行實時數(shù)據(jù)的傳輸和交換,。然而,，由于網(wǎng)絡(luò)的開放性，聯(lián)網(wǎng)過程中車輛更容易受到網(wǎng)絡(luò)攻擊,，保障車輛網(wǎng)絡(luò)在消息傳輸中的安全性至關(guān)重要,。
