M. GUESMIA Salah

MCB

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Department

Informatics Department

Research Interests

Vehicular Ad hoc Networks (VANETs) Connected and Autonomous Vehicles (CAVs) Intelligent Transportation Systems (ITS)

Contact Info

University of M'Sila, Algeria

Email : salah.guesmia@univ-msila.dz

On the Web:

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Recent Publications

2023-06-24

Contribution à l’amélioration de la communication véhiculaire pour mieux supporter les applications de sûreté routière dans les villes intelligentes

Le développement des villes intelligentes s'appuie principalement sur des technologies omniprésentes et avancées de l'information et de la communication pour contrôler les actifs de la ville, tels que l'énergie, l'eau et les infrastructures de transport, afin d'améliorer la qualité de vie des citoyens. Dans le contexte de la gestion des transports, l'objectif est d'identifier et de soutenir les modes de transport durables et de développer des systèmes de transport intelligents basés sur des informations en temps réel afin d'améliorer la sûreté routière, de gérer efficacement le trafic, réduisant ainsi les émissions de gaz et la consommation d'énergie, et également de fournir des services de confort aux usagers. Le paradigme émergent du système de véhicules connectés et autonomes (connus sous le nom de VANET) promet une amélioration substantielle du contrôle et de l'atténuation de la congestion routière ainsi qu'une sécurité très élevée lors des diverses manœuvres de véhicules telles que le changement de la voie, le dépassement, etc.
Dans ce contexte, cette thèse de doctorat vise à développer des techniques innovantes pour améliorer la fiabilité de la dissémination des messages, diffusés par les véhicules formant un réseau de type VANET, annonçant des situations dangereuses lors d'un événement d'urgence, tels que les accidents et le freinage d'urgence, tout en réduisant les délais de transmission de bout en bout et minimiser les retransmissions inutiles.
Citation

M. GUESMIA Salah, (2023-06-24), "Contribution à l’amélioration de la communication véhiculaire pour mieux supporter les applications de sûreté routière dans les villes intelligentes", [national] Université Mohamed Boudiaf de M'sila

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2023

A new delay-based broadcast suppression mechanism for efficient emergency messages dissemination in CAVs environment

Network congestion is a major issue affecting communications in Connected and Autonomous Vehicles (CAVs) under high vehicle density scenarios. The common idea used by emergency message broadcast protocols to overcome this challenge is to reduce the number of retransmissions. This is achieved by suppressing redundant retransmissions while maintaining broadcast reliability. In this paper, we analyze the problem of inaccurate suppression of redundant retransmissions in delay-based broadcast protocols and propose uHBS (unHurried Broadcast Suppression), a new more efficient broadcast suppression mechanism. uHBS avoids inaccurate decisions to suppress or forward an emergency message by considering the occurrence of duplicate receptions of this message and using an indication about the channel’s busy status. Next, we use the proposed uHBS mechanism as a basis for designing uHBS-DP (uHBS based Dissemination Protocol), a novel delay-based protocol for broadcasting emergency messages in urban vehicular networks. The simulation results show that uHBS-DP, using the proposed broadcast suppression mechanism, significantly improves the efficiency of emergency message broadcasting by ensuring high reliability with low broadcasting overhead, compared to two other variants of uHBS-DP that use conventional suppression mechanisms. Furthermore, the results show a substantial improvement, compared to a well known protocol, in terms of reduced collision ratio (up to 36.57%), lower dissemination delay (up to 19.17%) and reduced broadcast overhead (up to 19.28%).
Citation

M. GUESMIA Salah, (2023), "A new delay-based broadcast suppression mechanism for efficient emergency messages dissemination in CAVs environment", [national] Ad Hoc Networks , ELSEVIER

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2022

A scalable time-division-based emergency messages broadcast scheme for connected and autonomous vehicles in urban environment

Connected and Autonomous Vehicles (CAVs) technology promises to revolutionize the transportation sector by solving many safety and traffic efficiency challenges while significantly enhancing passengers' and drivers' comfort. Most of these applications are built upon multi-hop broadcast of information among vehicles, leading to an increased contention and thus higher collision probability due to the limited bandwidth available for vehicular communications. In this paper, we propose a novel Time-Division-based Broadcast (TDB) scheme to mitigate interferences originating from hidden nodes (i.e., vehicles) to meet the stringent safety applications requirements. Then, we use this broadcast scheme as a basis for designing a new efficient and scalable protocol for emergency messages dissemination in urban vehicular networks (UV-TDB: an Urban, Vehicular and Time-Division-based Broadcast protocol). The simulation experiments show that UV-TDB significantly improves the performance of multi-hop broadcast and outperforms two state of the art protocols in terms of the achieved reduction in broadcast overhead (up to 77.9%), packet collisions ratio (up to 93.5%), interference rate (up to 43.5%) and increase in message reception rate (up to 337.7%). The results highlight also that UV-TDB adapts better to varying levels of vehicle density, making it more scalable.
Citation

M. GUESMIA Salah, (2022), "A scalable time-division-based emergency messages broadcast scheme for connected and autonomous vehicles in urban environment", [national] Vehicular Communications , ELSEVIER

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