Dissemination of safety messages in IEEE 802.11p/WAVE vehicular network: Analytical study and protocol enhancements

Ghandour, Ali; Felice, Marco Di; Artail, Hassan; Bononi, Luciano

doi:10.1016/j.pmcj.2013.03.003

Cited by 49 publications

(29 citation statements)

References 26 publications

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“…Since vital communication in VANETs is a broadcasting mode, several works on the theoretical performance of VANETs have employed high priority-based broadcast for safety applications [14][15][16][17]. While the analytical model of a VANET for service applications was introduced in [18][19], the model in [5] is based on a Markov chain model.…”

Section: Related Workmentioning

confidence: 99%

A Comprehensive Performance Analysis of IEEE 802.11p based MAC for Vehicular Communications Under Non-saturated Conditions

et al. 2017

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Abstract. Reliable and efficient data broadcasting is essential in vehicular networks to provide safety-critical and commercial service messages on the road. There is still no comprehensive analysis of IEEE 802.11p based MAC that portrays the presence of buffer memory in vehicular networks. Besides, most of the analytical works do not fulfill some of the IEEE 802.11p specifications, such as short retry limit and back-off timer freezing. This paper proposes a 1-D and 2-D Markov model to analyze mathematically IEEE 802.11p based MAC for safety and non-safety messages respectively. The work presented in this paper takes into account the traffic arrival along with the first-order buffer memory and freezing of the back-off timer as well, to utilize the channel efficiently and provide higher accuracy in estimation of channel access, yielding more precise results of the system throughput for non-safety messages and lower delay for safety messages. Furthermore, back-off stages with a short retry limit were applied for non-safety messages in order to meet the IEEE 802.11p specifications, guaranteeing that no packet is served indefinitely, avoiding the overestimation of system throughput. A simulation was carried out to validate the analytical results of our model.

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Section: Related Workmentioning

confidence: 99%

A Comprehensive Performance Analysis of IEEE 802.11p based MAC for Vehicular Communications Under Non-saturated Conditions

et al. 2017

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“…Also in a vehicular context, a lot of effort has been dedicated to the design of back-off mechanisms that would optimize the delivery of messages, especially DENMs, over a certain geographical area ( [24], [25]). In this form of multi-hop broadcast, the objective is to set the smallest back-off time to the best forwarding nodes, in order to minimize the information propagation delay.…”

Section: Contention Window In Ieee 80211mentioning

confidence: 99%

Reverse back-off mechanism for safety vehicular ad hoc networks

Stanica¹,

Chaput²,

Beylot³

2014

Ad Hoc Networks

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Vehicular ad hoc networks can play an important role in enhancing transportation efficiency and improving road safety. Therefore, direct vehicle-tovehicle communications are considered as one of the main building blocks of a future Intelligent Transportation System. The success and availability of IEEE 802.11 radios made this technology the most probable choice for the medium access control layer in vehicular networks. However, IEEE 802.11 was originally designed in a wireless local area network context and it is not optimised for a dynamic, ad hoc vehicular scenario. In this paper, we investigate the compatibility of the IEEE 802.11 medium access control protocol with the requirements of safety vehicular applications. As the protocols in this family are well-known for their scalability problems, we are especially interested in high density scenarios, quite frequent on today's roads. Using an analytical framework, we study the performance of the back-off mechanism and the role of the contention window on the control channel of a vehicular network. Based on these findings, we propose a reverse back-off mechanism, specifically designed with road safety applications in mind. Extensive simulations are carried out to prove the efficiency of the proposed enhancement Preprint submitted to Ad Hoc Networks November 27, 2013 scheme and to better understand the characteristics of vehicular communications.

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“…The specific characteristics of VANETs favor the development of attractive and challenging services and applications, including road safety (Ghandour et al, 2014), traffic flow management (Sanchez-Medina et al, 2010), road status monitoring , environmental protection (Noor et al, 2012), and mobile infotainment (Salvo et al, 2012). In this work we focus on traffic safety and efficient warning message dissemination, where the main goal is to reduce the latency and to increase the accuracy of the information received by nearby vehicles when a dangerous situation occurs (Zhou et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

RTAD: A real-time adaptive dissemination system for VANETs

Sanguesa

Fogue

Garrido

et al. 2015

Computer Communications

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Efficient message dissemination is of utmost importance to propel the development of useful services and applications in Vehicular ad hoc Networks (VANETs).In this paper, we propose a novel adaptive system that allows each vehicle to automatically adopt the optimal dissemination scheme in order to fit the warning message delivery policy to each specific situation. Our mechanism uses as input parameters the vehicular density and the topological characteristics of the environment where the vehicles are located, in order to decide which dissemination scheme to use. We compare our proposal with respect to two static dissemination schemes (eMDR and NJL), and three adaptive dissemination systems (UV-CAST, FDPD, and DV-CAST). Simulation results demonstrate that our approach significantly improves upon these solutions, being able to support more efficient warning message dissemination in all situations ranging from low densities with complex maps, to high densities in simple scenarios. In particular, RTAD improves existing approaches in terms of percentage of vehicles informed, while significantly reducing the number of messages sent, thus mitigating broadcast storms.

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Dissemination of safety messages in IEEE 802.11p/WAVE vehicular network: Analytical study and protocol enhancements

Cited by 49 publications

References 26 publications

A Comprehensive Performance Analysis of IEEE 802.11p based MAC for Vehicular Communications Under Non-saturated Conditions

A Comprehensive Performance Analysis of IEEE 802.11p based MAC for Vehicular Communications Under Non-saturated Conditions

Reverse back-off mechanism for safety vehicular ad hoc networks

RTAD: A real-time adaptive dissemination system for VANETs

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