Connectivity Analysis of Vehicular Ad Hoc Networks from a Physical Layer Perspective

Neelakantan, P.; Babu, A. V.

doi:10.1007/s11277-012-0795-z

Cited by 15 publications

(10 citation statements)

References 34 publications

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“…Different from the conventional graph-theoretic approach, [114] investigated network connectivity under a physical layerbased QoS constraint, i.e. the average BER meeting a target requirement.…”

Section: ) Intra-platoon Communicationsmentioning

confidence: 99%

A Survey on Platoon-Based Vehicular Cyber-Physical Systems

Jia

Wang

et al. 2016

IEEE Commun. Surv. Tutorials

640

273

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Abstract-Vehicles on the road with some common interests can cooperatively form a platoon-based driving pattern, in which a vehicle follows another one and maintains a small and nearly constant distance to the preceding vehicle. It has been proved that, compared to driving individually, such a platoon-based driving pattern can significantly improve the road capacity and energy efficiency. Moreover, with the emerging vehicular adhoc network (VANET), the performance of platoon in terms of road capacity, safety and energy efficiency, etc., can be further improved. On the other hand, the physical dynamics of vehicles inside the platoon can also affect the performance of VANET. Such a complex system can be considered as a platoon-based vehicular cyber-physical system (VCPS), which has attracted significant attention recently. In this paper, we present a comprehensive survey on platoon-based VCPS. We first review the related work of platoon-based VCPS. We then introduce two elementary techniques involved in platoon-based VCPS: the vehicular networking architecture and standards, and traffic dynamics, respectively. We further discuss the fundamental issues in platoon-based VCPS, including vehicle platooning/clustering, cooperative adaptive cruise control (CACC), platoon-based vehicular communications, etc., and all of which are characterized by the tight coupled relationship between traffic dynamics and VANET behaviors. Since system verification is critical to VCPS development, we also give an overview of VCPS simulation tools. Finally, we share our view on some open issues that may lead to new research directions.Index Terms-Platoon, Cyber-physical system (CPS), Vehicular ad-hoc network (VANET), Platoon-based vehicular communications, Cooperative adaptive cruise control (CACC), Simulator.

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Section: ) Intra-platoon Communicationsmentioning

confidence: 99%

A Survey on Platoon-Based Vehicular Cyber-Physical Systems

Jia

Wang

et al. 2016

IEEE Commun. Surv. Tutorials

640

273

View full text Add to dashboard Cite

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“…Moreover, if the variance of the speed distribution is increased, then, in case of normally distributed speeds with fixed average value, the connectivity is improved in the free-flow traffic state. Different from conventional graphtheoretic approach, network connectivity is investigated in terms of a physical layer-based QoS constraint in (Neelakantan and Babu, 2012), i.e., the average route bit error rate (BER) meeting a target requirement. Lifetime of individual links in a VANET is investigated in (Yan and Olariu, 2011), analytical results…”

Section: Vanet Connectivitymentioning

confidence: 99%

“…For example, VANET connectivity has been extensively investigated in different highway scenarios (Yousefi et al, 2008;Sou and Tonguz, 2011;Wu, 2009;Neelakantan and Babu, 2012;Ng et al, 2011), among which some important probability distributions have been obtained. Optimization of the IEEE 802.11p MAC mechanism is another hot topic which has been discussed in terms of both contention-free based and contention-based approaches (Katrin and Elisabeth, 2009;Almalag et al, 2012;Han and Dianati, 2012;Song et al, 2011;Park et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

On the network connectivity of platoon-based vehicular cyber-physical systems

Jia

Wang

2014

Transportation Research Part C: Emerging Technologies

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In the past few years, vehicular ad-hoc network (VANET) has attracted significant attention and many fundamental issues have been investigated, such as network connectivity, medium access control (MAC) mechanism, routing protocol, quality of service (QoS), etc. Nevertheless, most related work has been based on simplified assumptions on the underlying vehicle traffic dynamics, which has a tight interaction with VANET in practice. In this paper, we try to investigate VANET performance from the vehicular cyber-physical system (VCPS) perspective. Specifically, we consider VANET connectivity of platoonbased VCPSs where all vehicles drive in platoon-based patterns, which facilitate better traffic performance as well as information services. We first propose a novel architecture for platoon-based VCPSs, then we derive the vehicle distribution under platoon-based driving patterns on a highway. Based on the results, we further investigate inter-platoon connectivity in a bi-directional highway scenario and evaluate the expected time of safety message delivery among platoons, taking into account the effects of system parameters, such as traffic flow, velocity, platoon size and transmission range. Extensive simulations are conducted which validate the accuracy of our analysis. This study will be helpful to understand the behavior of VCPSs, and will be helpful to improve vehicle platoon design and deployment.

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“…The frequent topology change is the prime cause of high path disconnection rate in VANETs. The frequent loss of connectivity increases packet loss during forwarding [30]. Therefore, we do need an effective path disconnection detection technique which can be utilized to reduce packet loss in geocast routing.…”

Section: • Path Disconnection Detectionmentioning

confidence: 99%

Geocast routing: Recent advances and future challenges in vehicular adhoc networks

Kaiwartya

Kumar

2014

2014 International Conference on Signal Processing and Integrated Networks (SPIN)

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Recently, geocast routing (GR) has been extensively investigated for reliable and efficient dissemination of information due to increasing number of intelligent transport system (ITS) applications favoring geocasting. In this paper, a qualitative survey of recent protocols of GR and some precise future research issues have been provided. A functional and qualitative description of each considered protocols have been presented. All the considered protocols have been comparatively characterized. This comparative study leads us towards some future research challenges in GR.

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Connectivity Analysis of Vehicular Ad Hoc Networks from a Physical Layer Perspective

Cited by 15 publications

References 34 publications

A Survey on Platoon-Based Vehicular Cyber-Physical Systems

A Survey on Platoon-Based Vehicular Cyber-Physical Systems

On the network connectivity of platoon-based vehicular cyber-physical systems

Geocast routing: Recent advances and future challenges in vehicular adhoc networks

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