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Samira Harrabi

Informations générales

Samira Harrabi
Grade

Maître Assistant

Biographie courte

Biography

Samira Harrabi was born on June 9, 1983, in Tunisia. She pursued her undergraduate studies at Bouhajla College in Bouhajla, Kairouan (South of Tunisia), where she obtained her Bachelor’s degree in Mathematics with Honors in 2003.

After completing her undergraduate degree, she moved to Monastir to continue her higher education in computer engineering. In 2011, she received her Master’s degree in Computer Engineering.

Since September 2011, she has been working in academia, first as a Contractual Assistant and currently as a Maître Assistante (Assistant Professor).

In 2012, she began her doctoral studies in computer science. Her Ph.D. research focuses on routing in Vehicular Ad Hoc Networks (VANETs) based on agent technology. Over the years, her research interests have evolved to encompass the Internet of Vehicles (IoV), intelligent transportation systems, distributed computing, and network optimization.

More recently, she has also been investigating the role of IoV in sustainable development, with particular attention to eco-friendly communication protocols, energy-efficient routing, and smart mobility solutions.

In addition to her research activities, Samira has been actively involved in teaching undergraduate and graduate courses, supervising student projects, and contributing to academic events and conferences. Her broader academic interests include network protocols, multi-agent systems, artificial intelligence, vehicular communications, and sustainable technologies.

Axes de recherche

Artificial Intelligence
Cyber Security
Metaheuristics

Publications

  • 2024
    Samira Harrabi, Ines Ben Jaafar, Oumaima Omrani

    A vehicle-to-infrastructure communication privacy protocolused Blockchain

    LicenseCC BY 4.0, 2024

    Résumé

    Since several decade, the Internet of Things IoT hasattracted enormous interest in the research communityand industry. However, IoT technologies has completelytransformed vehicular ad hoc networks (VANETs) intothe "Internet of Vehicles" IoV. In IoV networks, we needto integrate many different technologies, services andstandards. However, the heterogeneity and large numberof vehicles will increase the need of data security.The IoV security issues are critical because of the vulnerabilitiesthat exist during the transmission of informationthat expose the IoV to attacks. Each attack hasa security procedure. Many protocols and mechanismsexist to combat or avoid this communication securityproblem. One of these protocols is VIPER (a Vehicleto-Infrastructure communication Privacy EnforcementpRotocol). In our work, we try to improve this protocolby using Blockchain technology and certificationauthority.

  • Samira Harrabi, Ines Ben Jaafar, Khaled Ghedira

    Survey on IoV Routing Protocols

    Wireless Personal Communications 128(1), 2023

    Résumé

    Internet of vehicles (IoV) can be considered as a superset of vehicular ad-hoc networks (VANETs). It extends VANET’s structure, applications and scale. Unlike, the traditional intelligent transportation system (ITS), IoV focus more on information interactions between vehicles, roadside units (RSU) and humans. The principal aim is to make people obtain road traffic information easily and in real-time, to ensure the travel convenience, and to increase the travel comfort. The goal behind the Internet of vehicles is essentially to be used in urban traffic environment to ensure network access for passengers and drivers. The environment of the IoV is the combination of different wireless network environment as well as road conditions. Despite its continuing expansion, the IOV contains different radio access technologies that lead to a heterogeneous network, and make it more crucial than the VANET. These drawbacks pose numerous challenges, especially the routing one. In IoV environment, the routing protocol must cope with events such as link failure and to find the best route to propagate the data toward the desired destination. In this paper, we mainly focus on surveying the IoV routing protocols, hence we present and compare unicast, multicast and broadcast protocols.

  • Khaled Ghedira, Ines Ben Jaafar, Samira Harrabi

    DARSV: a dynamic agent routing simulator for VANETs

    International Journal of Simulation and Process Modelling, 2021

    Résumé

    In this paper, a novel dynamic agent routing simulator for vehicular ad-hoc networks (DARSV) is presented. The main purpose of DARSV simulator is to realise a successful large-scale simulation of agent based routing approach in vehicular networks. To conduct this goal, the proposed simulator combines the Java Agent DEvelopment (JADE) which is a powerful multi-agent system (MAS) framework with the dynamic ad hoc routing simulator (DARS) that takes into account the dynamic nature of environment networks. The simulation results are discussed to evaluate the efficiency and the performance of the proposed simulator.

    Ines Ben Jaafar, Samira Harrabi, Khaled Ghedira

    Performance Analysis of Vanets Routing Protocols

    LicenseCC BY 4.0, 2021

    Résumé

    Vehicular Ad Hoc Networks (VANETs) are a particular class of Mobile Ad Hoc Networks (MANETs). The VANETs provide wireless communication among vehicles and vehicle-to-road-side units. Even though the VANETs are a specific type of MANETs, a highly dynamic topology is a main feature that differentiates them from other kinds of ad hoc networks. As a result, designing an efficient routing protocol is considered a challenge.  The performance of vehicle-to-vehicle communication depends on how better the routing protocol takes in consideration the particularities of the VANETs. Swarm Intelligence (SI) is considered as a promising solution to optimize vehicular communication costs. In this paper, we explore the SI approach to deal with the routing problems in the VANETs. We also evaluate and compare two swarming agent-based protocols using numerous QoS parameters, namely the average end-to-end delay and the ratio packet loss which influence the performance of network communication.

  • Samira Harrabi, Ines Ben Jaafar, Khaled ghedira

    A Swarm Intelligence-based Routing Protocol for Vehicular Networks

    International Journal of Vehicle Information and Communication Systems (IJVICS), 2018

    Résumé

    Vehicular Ad hoc Networks (VANETs) are a particular case of Mobile Ad hoc Networks (MANETs). They are applied to exchange information among vehicles and between vehicles and a nearby fixed infrastructure. Unlike the MANETs, the VANETs have highly mobile nodes that cause a dynamic topology, a disconnected network, etc. Consequently, these features pose numerous challenges. One of them is routing. In a vehicular environment, the routing protocol needs to cope with events like link failure and to find an effective path to propagate the information toward the desired destination. In this context, we assume in this paper that the vehicles are intelligent and have a knowledge base about their communication environment. Our aim is to carry out the routing of the data based on swarm intelligence. The optimum route is explored using the Particle Swarm Optimisation (PSO). The proposed approach is called the Optimised Agent-based AODV Protocol for VANET (OptA2PV).

  • Samira Harrabi, Ines Ben Jaafar, khaled ghedira

    Message Dissemination in Vehicular Networks on the Basis of Agent Technology

    An International Journal of Wireless Personal Communications, 2017

    Résumé

    Vehicular Ad hoc Network (VANET) is a sub-family of Mobile Ad hoc Network (MANET). The principal goal of VANET is to provide communications between nearby nodes or between nodes and fixed infrastructure. Despite that VANET is considered as a subclass of MANET, it has for particularity the high mobility of vehicles producing the frequent changes of network topology that involve changing of road and varying node density of vehicles existing in this road. That‘s why, the most proposed clustering algorithms for MANET are unsuitable for VANET. Various searches have been recently published deal with clustering for VANETs, but most of them are focused on minimizing network overhead value, number of created clusters and had not considered the vehicles interests which defined as any related data used to differentiate vehicle from another. In this paper, we propose a novel clustering algorithm based on agent technology to improve routing in VANET.

    Samira Harrabi, Ines Ben Jaafar, Khaled Ghedira

    Reliability and Quality of Service of an Optimized Protocol for Routing in VANETs

    In CTRQ 2017: The tenth international conference on communication theory, reliability, and quality of service., 2017

    Résumé

    Vehicular Ad hoc NETworks (VANETs) are a special kind of Mobile Ad hoc NETworks (MANETs), which can provide scalable solutions for applications such as traffic safety, internet access, etc. To properly achieve this goal, these applications need an efficient routing protocol. Yet, contrary to the routing protocols designed for the MANETs, the routing protocols for the VANETs must take into account the highly dynamic topology caused by the fast mobility of the vehicles. Hence, improving the MANET routing protocol or designing a new one specific for the VANETs are the usual approaches to efficiently perform the routing protocol in a vehicular environment. In this context, we previously enhanced the Destination-Sequenced Distance-Vector Routing protocol (DSDV) based on the Particle Swarm Optimization (PSO) and the Multi-Agent System (MAS). This motivation for the PSO and MAS comes from the behaviors seen in very complicated problems, in particular routing. The main goal of this paper is to carry out a performance evaluation of the enhanced version in comparison to a well-known routing protocol which is the Intelligent Based Clustering Algorithm in VANET (IBCAV). The simulation results show that integrating both the MAS and the PSO is able to guarantee a certain level of quality of service in terms of loss packet, throughput and overhead.

  • Samira Harrabi, Ines ben Jaafar, Khaled ghedira

    Routing Challenges and Solutions in Vehicular Ad hoc Networks

    Sensors and Transducer journal, 2016

    Résumé

    Vehicular Ad-hoc Networks (VANETs) are known as a special type of Mobile Ad-hoc Networks (MANETs) specialized in vehicular communications. These networks are based on smart vehicles and basestations, which share data by means of wireless communications. To route these information, a routing protocol is required. Since the VANETs have a particular network features as rapidly changeable topology, designing an efficient routing scheme is a very hard task. In this paper, we mainly focus on surveying new routing protocols dedicated to VANETs. We present unicast, multicast and broadcast protocols. The experimental results are discussed to evaluate the performance of the presented methods.

    Samira Harrabi, Ines Ben Jaafar, Khaled Ghedira

    VANETs Networking Protocols : An Analytical study

    The Tenth International Conference on Sensor Technologies and Applications ( SENSORCOMM 2016), 2016

    Résumé

    Vehicular Ad hoc NETworks (VANETs) are considered as a class of Mobile Ad hoc NETworks (MANETs). The VANETs are a set of vehicles that are capable of exchanging data dynamically and without needing any pre-existing and fixed network infrastructure. Each node sends and receives messages in its communication area. Thus, message routing is done through a routing protocol. Despite the fact that the VANETs are a subgroup of the MANETs, they possess exceptional network behaviors like high mobility and dynamic topology, which make the MANETs routing protocols unsuitable for the VANETs. This paper summarizes the different protocols used for routing in the VANETs that focuses on a vehicle-to-vehicle communication. Utilizing an OMNET++ simulator, the experimental results are discussed to compare the presented routing protocol categories.

    Samira Harrabi, Ines ben jaafar, Khaled ghedira

    Novel Optimized Routing Scheme for VANETs »

    The 7th International Conference on Emerging Ubiquitous Systems and Pervasive Networks (Elsevier, EUSPN-2016), 2016

    Résumé

    The Vehicular ad -hoc networks (VANETs) are a specific type of Mobile ad-hoc networks (MANETs). However, the main problem related to it is the potential high speed of moving vehicles. This special property causes frequent changing in network topology and instability of communication routes. Consequently, some of the challenges that researchers focus on are routing protocols for VANETs. They have proved that the existing MANET proactive routing protocols are the most used for vehicular communication. Yet, they are not as adequate as they are for VANETs. The main problem with these protocols in dynamic environment is their route instability. This paper combines multi-agent system approach and PSO algorithm to solve the above mentioned problems. We carried out a set of simulations tests to evaluate the performance of our scheme. The simulation part shows promising results regarding the adoption of the proposed scheme.

    Samira Harrabi, nes Ben jaafar, Khaled Ghedira

    An Enhanced AODV Routing Protocol for Vehicular Adhoc Networks

    International conference on Big Data and Advanced Wireless technologies (ACM,BDAW 2016) ,, 2016

    Résumé

    The key difference of Vehicular Ad- hoc Network (VANET) and Mobile Ad-hoc Network (MANET) is the exceptional mobility pattern and quick variability variable of network topology. The existing MANET routing protocols are inadequate for the VANET. One good manner of data sending in vehicular environment is to enhance the MANET routing protocols and make them appropriate for the VANET. Ad-hoc On-demand Distance Vector (AODV) is one of the most important MANET reactive protocols. Nevertheless, once we have to deal with a VANET, its performance is poor. In this paper, we propose an enhancing the AODV routing protocol based on agent technology to improve the Quality of Service (QoS) in VANET. The experimental results show that our approach outperforms the AODV protocol in terms of routing overhead, dropped packets rate and transfer packets delay.

  • Samira Harrabi, Walid Chainbi, Khaled Ghedira

    A multi-agent proactive routing protocol for Vehicular Ad-Hoc Networks

    Proc.of The 2014 International Symposium on Networks, Computers and Communications (IEEE ISNCC 2014),, 2014

    Résumé

    Vehicular ad hoc network is one of the most promising applications of MANET. However, they have special properties such as high mobility, network portioning and constrained topology which require smaller latency and higher reliability. These vehicles that move along the same road are able to communicate either directly to the destination or by using the intermediate node, such as router. Therefore, designing an efficient routing protocol for all VANETs scenarios is very hard. A lot of researches about routing in VANETs are considering DSDV routing protocol as the most suitable protocol for mobility environment. But DSDV generates a large volume of control packets and takes up a large part of available bandwidth. In this paper, we propose an improving DSDV routing protocol based on multi-agent system approach to solve the performance problems mentioned above. Experimental results show promising results regarding the adoption of the proposed approach.
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  • Samira Harrabi, Walid Chainbi, Khaled Ghedira

    A Multi-agent Approach for Routing on Vehicular Ad-Hoc Networks,

    The 4th International Conference on Ambient Systems, Networks and Technologies, 2013

    Résumé

    Vehicular Ad-Hoc Network is a special form of mobile ad -hoc networks (MANETs) which is a vehicle to vehicle and vehicle roadside wireless communication network. VANET is a new standard that integrates Wi-Fi, Bluetooth and other mobile connectivity protocols. The essential requirement of VANET is that it should be able to communicate in any environment irrespective of traffic densities and vehicle locations. Vehicular communications are made in fluctuating environment and should work both in urban and rural areas. Considering the large number of nodes participating in these networks and their high mobility, debates still exist about the feasibility of routing protocols. Analyzes of traditional routing protocols for MANETs demonstrated that their performance is poor in VANETs. The main problem with these protocols in VANETs environments is their route instability. Consequently, many packets are dropped and the overhead due to route repairs or failure notifications increases significantly, leading to low delivery ratios and high transmission delays. This paper introduces a multi-agent system approach to solve the problems mentioned above and improve Vehicular ad-hoc network routing.