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Dr. Soufiene Djahel
Manchester Metropolitan University, UK

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Research Keywords & Expertise

0 Network Security
0 Wireless Networking
0 IoT
0 intelligent transportation systems
0 Connected and Autonomous Vehicles

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IoT
intelligent transportation systems

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Short Biography

Soufiene Djahel (SM’16) received the Ph.D. degree in computer science from Lille 1 University of Science and Technology, France, in 2010. He has been a Senior Lecturer with the department of Computing and Mathematics, Manchester Metropolitan University, U.K., since 2015. His main research interests include Security and QoS issues in wireless networks, Intelligent Transportation Systems (ITS), and e-health. He has published more than 60 peer reviewed conference and journal papers in the reputable IEEE Core/Flagship conferences and journals in wireless networks and ITS research domain.

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Journal article
Published: 29 July 2021 in Complex & Intelligent Systems
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Air pollution is a major issue resulting from the excessive use of conventional energy sources in developing countries and worldwide. Particulate Matter less than 2.5 µm in diameter (PM2.5) is the most dangerous air pollutant invading the human respiratory system and causing lung and heart diseases. Therefore, innovative air pollution forecasting methods and systems are required to reduce such risk. To that end, this paper proposes an Internet of Things (IoT) enabled system for monitoring and predicting PM2.5 concentration on both edge devices and the cloud. This system employs a hybrid prediction architecture using several Machine Learning (ML) algorithms hosted by Nonlinear AutoRegression with eXogenous input (NARX). It uses the past 24 h of PM2.5, cumulated wind speed and cumulated rain hours to predict the next hour of PM2.5. This system was tested on a PC to evaluate cloud prediction and a Raspberry P i to evaluate edge devices’ prediction. Such a system is essential, responding quickly to air pollution in remote areas with low bandwidth or no internet connection. The performance of our system was assessed using Root Mean Square Error (RMSE), Normalized Root Mean Square Error (NRMSE), coefficient of determination (R 2), Index of Agreement (IA), and duration in seconds. The obtained results highlighted that NARX/LSTM achieved the highest R 2 and IA and the least RMSE and NRMSE, outperforming other previously proposed deep learning hybrid algorithms. In contrast, NARX/XGBRF achieved the best balance between accuracy and speed on the Raspberry P i .

ACS Style

Ahmed Samy Moursi; Nawal El-Fishawy; Soufiene Djahel; Marwa Ahmed Shouman. An IoT enabled system for enhanced air quality monitoring and prediction on the edge. Complex & Intelligent Systems 2021, 1 -25.

AMA Style

Ahmed Samy Moursi, Nawal El-Fishawy, Soufiene Djahel, Marwa Ahmed Shouman. An IoT enabled system for enhanced air quality monitoring and prediction on the edge. Complex & Intelligent Systems. 2021; ():1-25.

Chicago/Turabian Style

Ahmed Samy Moursi; Nawal El-Fishawy; Soufiene Djahel; Marwa Ahmed Shouman. 2021. "An IoT enabled system for enhanced air quality monitoring and prediction on the edge." Complex & Intelligent Systems , no. : 1-25.

Journal article
Published: 19 July 2021 in Journal of Sensor and Actuator Networks
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Wireless Sensor Networks (WSNs) is a major sensing technology that has revolutionized the way information is collected, processed, and used in many smart cities’ applications that rely on sensing technologies for event detection and monitoring. Despite the multiple benefits that such technology offers, the quick depletion of sensors’ battery power represents a major concern, mainly due to the extensive computational tasks and communication operations performed by individual sensors. Indeed, the cost of replacing batteries can be prohibitively expensive, especially when sensors are deployed in areas where access is difficult, in urbanized cities. To extend sensors’ lifetime, this paper proposes a new variant of LEACH protocol named LEACH enhanced with probabilistic cluster head selection (LEACH-PRO). LEACH-PRO introduces several measures to extend WSNs nodes’ lifetime such as cluster head node selection using a probabilistic function based on maximum residual energy and minimum distance to the sink. The obtained simulation results have proven the supremacy of LEACH-PRO over LEACH and direct transmission protocol in terms of the achieved network lifetime and the generated traffic overhead. Most importantly, LEACH-PRO will significantly extend the sensors’ lifetime, which would make this type of deployment more viable in smart city scenarios.

ACS Style

Zahid Yousif; Intesab Hussain; Soufiene Djahel; Yassine Hadjadj-Aoul. A Novel Energy-Efficient Clustering Algorithm for More Sustainable Wireless Sensor Networks Enabled Smart Cities Applications. Journal of Sensor and Actuator Networks 2021, 10, 50 .

AMA Style

Zahid Yousif, Intesab Hussain, Soufiene Djahel, Yassine Hadjadj-Aoul. A Novel Energy-Efficient Clustering Algorithm for More Sustainable Wireless Sensor Networks Enabled Smart Cities Applications. Journal of Sensor and Actuator Networks. 2021; 10 (3):50.

Chicago/Turabian Style

Zahid Yousif; Intesab Hussain; Soufiene Djahel; Yassine Hadjadj-Aoul. 2021. "A Novel Energy-Efficient Clustering Algorithm for More Sustainable Wireless Sensor Networks Enabled Smart Cities Applications." Journal of Sensor and Actuator Networks 10, no. 3: 50.

Journal article
Published: 28 October 2020 in Sensors
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Internet of Things (IoT) technology is increasingly pervasive in all aspects of our life and its usage is anticipated to significantly increase in future Smart Cities to support their myriad of revolutionary applications. This paper introduces a new architecture that can support several IoT-enabled smart home use cases, with a specified level of security and privacy preservation. The security threats that may target such an architecture are highlighted along with the cryptographic algorithms that can prevent them. An experimental study is performed to provide more insights about the suitability of several lightweight cryptographic algorithms for use in securing the constrained IoT devices used in the proposed architecture. The obtained results showed that many modern lightweight symmetric cryptography algorithms, as CLEFIA and TRIVIUM, are optimized for hardware implementations and can consume up to 10 times more energy than the legacy techniques when they are implemented in software. Moreover, the experiments results highlight that CLEFIA significantly outperforms TRIVIUM under all of the investigated test cases, and the latter performs 100 times worse than the legacy cryptographic algorithms tested.

ACS Style

Mamun Abu-Tair; Soufiene Djahel; Philip Perry; Bryan Scotney; Unsub Zia; Jorge Martinez Carracedo; Ali Sajjad. Towards Secure and Privacy-Preserving IoT Enabled Smart Home: Architecture and Experimental Study. Sensors 2020, 20, 6131 .

AMA Style

Mamun Abu-Tair, Soufiene Djahel, Philip Perry, Bryan Scotney, Unsub Zia, Jorge Martinez Carracedo, Ali Sajjad. Towards Secure and Privacy-Preserving IoT Enabled Smart Home: Architecture and Experimental Study. Sensors. 2020; 20 (21):6131.

Chicago/Turabian Style

Mamun Abu-Tair; Soufiene Djahel; Philip Perry; Bryan Scotney; Unsub Zia; Jorge Martinez Carracedo; Ali Sajjad. 2020. "Towards Secure and Privacy-Preserving IoT Enabled Smart Home: Architecture and Experimental Study." Sensors 20, no. 21: 6131.

Journal article
Published: 07 May 2020 in IEEE Consumer Electronics Magazine
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The emergence of Body Area Networks (BANs) has paved the way for real-time sensing of human biometrics in addition to remote control of smart wireless medical devices, which in turn are beginning to revolutionize the smart healthcare industry. However, due to their limited power and computational capabilities they are vulnerable to a myriad of security attacks. To secure BAN sensors against these threats processor-intensive cryptographic techniques need to be avoided as they are not suitable in this context. This paper focuses on authentication service for BAN sensors and proposes an original scheme named "RAFV: Rotational Assisted Fuzzy Vaults" to harden the security of any authentication solution using the fuzzy vault construction approach. The evaluation results have shown that RAFV can successfully conceal the secret of the vault even if the locking elements are known to the adversary. Also, RAFV may improve upon communication overhead by enabling a reduction in the size of the vault without compromising its security. It has achieved all of this while remaining competitive with regards to additional computational overhead.

ACS Style

Jack Hodgkiss; Soufiene Djahel. Securing Fuzzy Vault Enabled Authentication in Body Area Networks based Smart Healthcare. IEEE Consumer Electronics Magazine 2020, 1 -1.

AMA Style

Jack Hodgkiss, Soufiene Djahel. Securing Fuzzy Vault Enabled Authentication in Body Area Networks based Smart Healthcare. IEEE Consumer Electronics Magazine. 2020; (99):1-1.

Chicago/Turabian Style

Jack Hodgkiss; Soufiene Djahel. 2020. "Securing Fuzzy Vault Enabled Authentication in Body Area Networks based Smart Healthcare." IEEE Consumer Electronics Magazine , no. 99: 1-1.

Journal article
Published: 10 March 2020 in IEEE Intelligent Transportation Systems Magazine
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ACS Style

Soufiene Djahel; Nafaa Jabeur; Farid Nait-Abdesselam; Thomas Wolstencroft. A WAVE Based and Collaboration Driven Framework for Reduced Traffic Congestion in Smart Cities. IEEE Intelligent Transportation Systems Magazine 2020, 1 .

AMA Style

Soufiene Djahel, Nafaa Jabeur, Farid Nait-Abdesselam, Thomas Wolstencroft. A WAVE Based and Collaboration Driven Framework for Reduced Traffic Congestion in Smart Cities. IEEE Intelligent Transportation Systems Magazine. 2020; (99):1.

Chicago/Turabian Style

Soufiene Djahel; Nafaa Jabeur; Farid Nait-Abdesselam; Thomas Wolstencroft. 2020. "A WAVE Based and Collaboration Driven Framework for Reduced Traffic Congestion in Smart Cities." IEEE Intelligent Transportation Systems Magazine , no. 99: 1.

Journal article
Published: 21 February 2020 in Information
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Traffic lights have been used for decades to control and manage traffic flows crossing road intersections to increase traffic efficiency and road safety. However, relying on fixed time cycles may not be ideal in dealing with the increasing congestion level in cities. Therefore, we propose a new Adaptive Traffic Light Control System (ATLCS) to assist traffic management authorities in efficiently dealing with traffic congestion in cities. The main idea of our ATLCS consists in synchronizing a number of traffic lights controlling consecutive junctions by creating a delay between the times at which each of them switches to green in a given direction. Such a delay is dynamically updated based on the number of vehicles waiting at each junction, thereby allowing vehicles leaving the city centre to travel a long distance without stopping (i.e., minimizing the number of occurrences of the ‘stop and go’ phenomenon), which in turn reduces their travel time as well. The performance evaluation of our ATLCS has shown that the average travel time of vehicles traveling in the synchronized direction has been significantly reduced (by up to 39%) compared to non-synchronized fixed time Traffic Light Control Systems. Moreover, the overall achieved improvement across the simulated road network was 17%.

ACS Style

Dex R. Aleko; Soufiene Djahel. An Efficient Adaptive Traffic Light Control System for Urban Road Traffic Congestion Reduction in Smart Cities. Information 2020, 11, 119 .

AMA Style

Dex R. Aleko, Soufiene Djahel. An Efficient Adaptive Traffic Light Control System for Urban Road Traffic Congestion Reduction in Smart Cities. Information. 2020; 11 (2):119.

Chicago/Turabian Style

Dex R. Aleko; Soufiene Djahel. 2020. "An Efficient Adaptive Traffic Light Control System for Urban Road Traffic Congestion Reduction in Smart Cities." Information 11, no. 2: 119.

Proceedings article
Published: 01 April 2018 in 2018 Wireless Days (WD)
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According to recent forecasts, constant population growth and urbanization will bring an additional load of 2.9 billion vehicles to road networks by 2050. This will certainly lead to increased air pollution concerns, highly congested roads putting more strain on an already deteriorated infrastructure, and may increase the risk of accidents on the roads as well. Therefore, to face these issues we need not only to promote the usage of smarter and greener means of transportation but also to design advanced solutions that leverage the capabilities of these means along with modern cities' road infrastructure to maximize its utility. To this end, we propose an original Cognitive Radio inspired algorithm, named CRITIC, that aims to mimic the principle of Cognitive Radio technology used in wireless networks on road networks. The key idea behind CRITIC is to temporarily grant regular vehicles access to priority (e.g., bus or carpool) lanes whenever they are underutilized in order to reduce road traffic congestion. The performance evaluation results of CRITIC using grid and random road network topologies with varying traffic load have proven its effectiveness.

ACS Style

Soufiene Djahel; Adam Jones; Yassine Hadjadj-Aoul; Ashfaq Khokhar. CRITIC: A cognitive radio inspired road traffic congestion reduction solution. 2018 Wireless Days (WD) 2018, 151 -157.

AMA Style

Soufiene Djahel, Adam Jones, Yassine Hadjadj-Aoul, Ashfaq Khokhar. CRITIC: A cognitive radio inspired road traffic congestion reduction solution. 2018 Wireless Days (WD). 2018; ():151-157.

Chicago/Turabian Style

Soufiene Djahel; Adam Jones; Yassine Hadjadj-Aoul; Ashfaq Khokhar. 2018. "CRITIC: A cognitive radio inspired road traffic congestion reduction solution." 2018 Wireless Days (WD) , no. : 151-157.

Journal article
Published: 25 January 2018 in IEEE Transactions on Systems, Man, and Cybernetics: Systems
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Periodic beacon messages are one of the building blocks that enable the operation of vehicular ad hoc networks (VANETs) applications. In vehicular networks environments, congestion and awareness control mechanisms are key for a reliable and efficient functioning of vehicular applications. In order to control the channel load, a reliable mechanism allowing real-time measurements of parameters like the local density of vehicles is a must. These measurements can then serve as an input to perform a fast adaptation of the transmit parameters. In this paper, considerable efforts have been directed in the recent years toward designing flexible yet robust protocols solving this problem; yet, very few have considered a proactive adaptation of the transmit parameters as a preventive measure from channel load peaks. To this end, we take the opportunity to introduce prediction and adaptation algorithm (P&A-A), a new congestion control protocol that performs a joint adaptation of the transmit rate and power, relying on an altruistic short-term prediction algorithm that estimates the vehicular density around a given vehicle within the next short while. Additionally, P&A-A adapts the transmit parameters in a way that guarantees the strict beaconing requirements and satisfies the level of awareness required for the operation of most critical VANET applications. The results of the simulations performed in a realistic scenario justify our theoretical considerations and confirm the efficiency and the effectiveness of our protocol by showing significant improvements in terms of network performance (up to 8% and 14% improvement in collision rate; and up to 10% and 20% increase in busy ratio compared to our previous scheme and the ETSI schemes, respectively) as well as the achieved level of awareness (higher coverage with higher transmission rate and power in dense scenarios, and up to 8% and 55% improvement in density perception accuracy compared to our previous scheme and the ETSI schemes, respectively).

ACS Style

Sofiane Zemouri; Soufiene Djahel; John Murphy. An Altruistic Prediction-Based Congestion Control for Strict Beaconing Requirements in Urban VANETs. IEEE Transactions on Systems, Man, and Cybernetics: Systems 2018, 49, 2582 -2597.

AMA Style

Sofiane Zemouri, Soufiene Djahel, John Murphy. An Altruistic Prediction-Based Congestion Control for Strict Beaconing Requirements in Urban VANETs. IEEE Transactions on Systems, Man, and Cybernetics: Systems. 2018; 49 (12):2582-2597.

Chicago/Turabian Style

Sofiane Zemouri; Soufiene Djahel; John Murphy. 2018. "An Altruistic Prediction-Based Congestion Control for Strict Beaconing Requirements in Urban VANETs." IEEE Transactions on Systems, Man, and Cybernetics: Systems 49, no. 12: 2582-2597.

Journal article
Published: 16 January 2018 in IEEE Systems Journal
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Dynamic backpressure is a highly desirable family of routing protocols known for their attractive mathematical properties. However, these protocols suffer from a high end-to-end delay making them inefficient for real-time traffic with strict end-to-end delay requirements. In this paper, we address this issue by proposing a new adjustable and fully distributed backpressure-based scheme with low queue management complexity, named Lifetime-Aware Backpressure (LTA-BP). The novelty in the proposed scheme consists in introducing the urgency level as a new metric for service differentiation among the competing traffic flows in the network. Our scheme not just significantly improves the quality of service provided for real-time traffic with stringent end-to-end delay constraints, but interestingly protects also the flows with softer delay requirements from being totally starved. The proposed scheme has been evaluated and compared against other state-of-the-art routing protocol, using computer simulation, and the obtained results show its superiority in terms of the achieved end-to-end delay and throughput.

ACS Style

Abdelbaset Kabou; Nadia Nouali-Taboudjemat; Soufiene Djahel; Said Yahiaoui; Omar Nouali. Lifetime-Aware Backpressure—A New Delay-Enhanced Backpressure-Based Routing Protocol. IEEE Systems Journal 2018, 13, 42 -52.

AMA Style

Abdelbaset Kabou, Nadia Nouali-Taboudjemat, Soufiene Djahel, Said Yahiaoui, Omar Nouali. Lifetime-Aware Backpressure—A New Delay-Enhanced Backpressure-Based Routing Protocol. IEEE Systems Journal. 2018; 13 (1):42-52.

Chicago/Turabian Style

Abdelbaset Kabou; Nadia Nouali-Taboudjemat; Soufiene Djahel; Said Yahiaoui; Omar Nouali. 2018. "Lifetime-Aware Backpressure—A New Delay-Enhanced Backpressure-Based Routing Protocol." IEEE Systems Journal 13, no. 1: 42-52.

Conference paper
Published: 01 December 2015 in 2015 IEEE Vehicular Networking Conference (VNC)
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Unexpected road traffic congestion caused by en-route events, such as car crashes, road works, unplanned parades etc., is a real challenge in today's urban road networks as it considerably increases the drivers' travel time and decreases travel time reliability. To face this challenge, this paper extends our previous work named Next Road Rerouting (NRR) by designing a novel vehicle rerouting strategy that can adapt itself to the sudden change of urban road traffic conditions. This is achieved through a smart calibration of the algorithmic and operational parameters of NRR without any intervention from traffic managers. Specifically, a coefficient of variation based method is used to assign weight values to three factors in the routing cost function of NRR, and the k-means algorithm is applied periodically to choose the number of NRR enabled agents needed. This adaptive-NRR (a-NRR) strategy is supported by vehicular ad-hoc networks (VANETs) technology as this latter can provide rich traffic information at much higher update frequency and much larger coverage than induction loops used in the previously proposed static NRR. Simulation results show that in the city center area of TAPASCologne scenario, compared to the existing vehicle navigation system (VNS) and static NRR, our adaptive-NRR can achieve considerable gain in terms of trip time reduction and travel time reliability improvement.

ACS Style

Shen Wang; Soufiene Djahel; Jennifer McManis. An adaptive and VANETs-based Next Road Re-routing system for unexpected urban traffic congestion avoidance. 2015 IEEE Vehicular Networking Conference (VNC) 2015, 196 -203.

AMA Style

Shen Wang, Soufiene Djahel, Jennifer McManis. An adaptive and VANETs-based Next Road Re-routing system for unexpected urban traffic congestion avoidance. 2015 IEEE Vehicular Networking Conference (VNC). 2015; ():196-203.

Chicago/Turabian Style

Shen Wang; Soufiene Djahel; Jennifer McManis. 2015. "An adaptive and VANETs-based Next Road Re-routing system for unexpected urban traffic congestion avoidance." 2015 IEEE Vehicular Networking Conference (VNC) , no. : 196-203.

Conference paper
Published: 01 December 2013 in 2013 IEEE Vehicular Networking Conference
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Ensuring fast and reliable dissemination of safety messages is a prerequisite for the establishment of safety applications in Vehicular Ad Hoc Networks (VANETs). However, fulfilling this requirement is a challenging task due to the specific characteristics of VANETs and the increasing density of vehicles in urban areas. Moreover, VANETs may carry a large amount of data to moving vehicles, leading to an excessive load on the network, which might significantly decrease the performance of the applications. The existing solutions address this problem by either reducing the beacons transmission rate or controlling the vehicles' transmission power. We argue that such a network could control its load and improve the transmission reliability by improving the forwarding mechanism. To this end, we propose the Road-Casting Protocol, a distributed dissemination protocol for safety messages in urban areas, which is based on a cooperative forwarding mechanism that reduces the number of unnecessary retransmissions and shortens the end-to-end delay. We have evaluated the efficiency of our protocol using realistic simulations, based on an accurate propagation loss model for urban communications in VANETs, and the obtained results are very promising.

ACS Style

Sofiane Zemouri; Soufiene Djahel; John Murphy. Short paper: Road-Casting: A new distributed dissemination protocol for safety messages in urban areas. 2013 IEEE Vehicular Networking Conference 2013, 234 -237.

AMA Style

Sofiane Zemouri, Soufiene Djahel, John Murphy. Short paper: Road-Casting: A new distributed dissemination protocol for safety messages in urban areas. 2013 IEEE Vehicular Networking Conference. 2013; ():234-237.

Chicago/Turabian Style

Sofiane Zemouri; Soufiene Djahel; John Murphy. 2013. "Short paper: Road-Casting: A new distributed dissemination protocol for safety messages in urban areas." 2013 IEEE Vehicular Networking Conference , no. : 234-237.

Conference paper
Published: 01 October 2013 in Global Information Infrastructure Symposium - GIIS 2013
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Due to the severe impact of road traffic congestion on both economy and environment, several vehicles routing algorithms have been proposed to optimize travelers itinerary based on real-time traffic feeds or historical data. However, their evaluation methodologies are not as compelling as their key design idea because none of them had been tested under both real transportation map and real traffic data. In this paper, we conduct a deep performance analysis and comparison of four typical vehicles routing algorithms under various scalability levels (i.e. trip length and traffic load) based on realistic transportation simulation. The ultimate goal of this work is to suggest the most suitable routing algorithm to use in different transportation scenarios, so that it can provide a valuable reference for both traffic managers and researchers when they deploy or optimize a large scale centralized Traffic Management System (TMS). The obtained simulation results reveal that dynamic A* is the best routing algorithm if the TMS has sufficient memory or storage capacities, otherwise static A* is also a great alternative.

ACS Style

Shen Wang; Soufiene Djahel; Jennifer McManis; Cormac McKenna; Liam Murphy. Comprehensive performance analysis and comparison of vehicles routing algorithms in smart cities. Global Information Infrastructure Symposium - GIIS 2013 2013, 1 -8.

AMA Style

Shen Wang, Soufiene Djahel, Jennifer McManis, Cormac McKenna, Liam Murphy. Comprehensive performance analysis and comparison of vehicles routing algorithms in smart cities. Global Information Infrastructure Symposium - GIIS 2013. 2013; ():1-8.

Chicago/Turabian Style

Shen Wang; Soufiene Djahel; Jennifer McManis; Cormac McKenna; Liam Murphy. 2013. "Comprehensive performance analysis and comparison of vehicles routing algorithms in smart cities." Global Information Infrastructure Symposium - GIIS 2013 , no. : 1-8.

Conference paper
Published: 01 April 2013 in 6th Joint IFIP Wireless and Mobile Networking Conference (WMNC)
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The main wireless technology used for events sensing and data collection is wireless sensor devices. These sensors are mounted on vehicles or in the roadside to send data collected periodically or upon incident detection. In this latter case, ensuring low transmission delay from the detector sensor to WSNs gateway is a real challenge. Indeed, faster notification of the Traffic Management System (TMS) leads to more efficient reaction to the emergency situation. Thus, cars collision and human lives loss as well as road traffic jam will be mitigated. In this paper, we investigate the Medium Access Control (MAC) layer in WSNs to improve the real time data collection scheme. To this end, we propose an enhanced backoff selection scheme for IEEE 802.15.4 protocol to ensure fast transmission of the detected events on the road towards the TMS. The main feature of our scheme is its ability to assign a shorter waiting time for messages carrying critical information without changing the basic principle of the backoff mechanism. The obtained simulation results under various scenarios have proven the effectiveness of our scheme in terms of transmission delay reduction.

ACS Style

Horiya Imane Brahmi; Soufiene Djahel; John Murphy. Improving emergency messages transmission delay in road monitoring based WSNs. 6th Joint IFIP Wireless and Mobile Networking Conference (WMNC) 2013, 1 -8.

AMA Style

Horiya Imane Brahmi, Soufiene Djahel, John Murphy. Improving emergency messages transmission delay in road monitoring based WSNs. 6th Joint IFIP Wireless and Mobile Networking Conference (WMNC). 2013; ():1-8.

Chicago/Turabian Style

Horiya Imane Brahmi; Soufiene Djahel; John Murphy. 2013. "Improving emergency messages transmission delay in road monitoring based WSNs." 6th Joint IFIP Wireless and Mobile Networking Conference (WMNC) , no. : 1-8.

Conference paper
Published: 01 April 2013 in 6th Joint IFIP Wireless and Mobile Networking Conference (WMNC)
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Session Initiation Protocol (SIP) is a widely used protocol for voice and video communication in Internet architecture. Due to its open nature and the lack of robust security mechanisms, SIP is vulnerable to several attacks similar to those existing in Internet infrastructure, such as the flooding attack. An attacker can use any SIP request to launch a flooding attack, leading to severe consequences at either client or server side SIP elements or both of them. In this context, end user's devices are considered more vulnerable to flooding attacks due to their limited capabilities. In this paper, we focus on INVITE flooding attack for which we propose a simple and robust detection scheme. This scheme prevents an attacker from launching an INVITE flood through a transition state table used by the proxy to analyse the incoming INVITE requests and exclude the suspicious ones. Our scheme requires also that the end-user keeps track of the time and IP addresses of each incoming request. Furthermore, we modify the header of the REGISTER request by adding a new field named Critical number which holds the value of maximum number of users or callers that could easily be handled by the end user. Unlike the existing solutions, our scheme does not require any special detection device or firewall at the SIP server. The proposed mechanism has been implemented in SIP Express Router (SER) and the obtained results have confirmed its effectiveness.

ACS Style

Intesab Hussain; Soufiene Djahel; Dimitris Geneiatakis; Farid Naït-Abdesselam; Iqbal Hussain. A lightweight countermeasure to cope with flooding attacks against session initiation protocol. 6th Joint IFIP Wireless and Mobile Networking Conference (WMNC) 2013, 1 -5.

AMA Style

Intesab Hussain, Soufiene Djahel, Dimitris Geneiatakis, Farid Naït-Abdesselam, Iqbal Hussain. A lightweight countermeasure to cope with flooding attacks against session initiation protocol. 6th Joint IFIP Wireless and Mobile Networking Conference (WMNC). 2013; ():1-5.

Chicago/Turabian Style

Intesab Hussain; Soufiene Djahel; Dimitris Geneiatakis; Farid Naït-Abdesselam; Iqbal Hussain. 2013. "A lightweight countermeasure to cope with flooding attacks against session initiation protocol." 6th Joint IFIP Wireless and Mobile Networking Conference (WMNC) , no. : 1-5.

Conference paper
Published: 01 December 2012 in 2012 IEEE Global Communications Conference (GLOBECOM)
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Nowadays, Vehicle to Vehicle (V2V) communication is attracting an increasing attention from car manufacturers due to its expected impact in improving driving safety and comfort. IEEE 802.11P is the primary channel access scheme used by vehicles; however it does not provide sufficient spectrum to ensure reliable exchange of safety information. To overcome this issue, many efforts have been devoted to enhance the frequency spectrum utilization efficiency. To this end, the Cognitive Radio (CR) principle has been applied to assist the vehicles to gain extra bandwidth through an opportunistic use of the unused spectrums in their surrounding. In this paper, we focus on safety messages for which we propose an original scheme that makes their exchange among the nearby vehicles more reliable with a significant reduce in their dissemination delay. This improvement is due to the use of a Hidden Markov Model that enables the prediction of the available channels for the subsequent time slots, leading to faster channel allocation for the vehicles. The obtained simulation results confirm the efficiency of our scheme.

ACS Style

Imane Horiya Brahmi; Soufiene Djahel; Yacine Ghamri-Doudane. A Hidden Markov Model based scheme for efficient and fast dissemination of safety messages in VANETs. 2012 IEEE Global Communications Conference (GLOBECOM) 2012, 177 -182.

AMA Style

Imane Horiya Brahmi, Soufiene Djahel, Yacine Ghamri-Doudane. A Hidden Markov Model based scheme for efficient and fast dissemination of safety messages in VANETs. 2012 IEEE Global Communications Conference (GLOBECOM). 2012; ():177-182.

Chicago/Turabian Style

Imane Horiya Brahmi; Soufiene Djahel; Yacine Ghamri-Doudane. 2012. "A Hidden Markov Model based scheme for efficient and fast dissemination of safety messages in VANETs." 2012 IEEE Global Communications Conference (GLOBECOM) , no. : 177-182.

Conference paper
Published: 01 November 2012 in 2012 First International Workshop on Vehicular Traffic Management for Smart Cities (VTM)
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Vehicle routing problem (VRP) is a generic name referring to optimization problems in transportation, distribution and logistics industry. They mainly focus on serving a number of customers by a number of vehicles. Route planning techniques is one of the main tasks of VRP which aims to find an optimal route from a starting point to a destination on a road map. As road traffic conditions may change during the car journey (e.g., increase/decrease of the congestion level, road incidents etc), the optimal route should be re-evaluated as soon as an update in traffic conditions is available. Choosing an appropriate route planning algorithm among the existing algorithms in the literature to apply it in real road networks is an important task for any transportation application. In this paper, we first present a classification of the different route planning algorithms, and then explain how we compare and analyze their performance when they are applied in real road networks. For the purpose of comparison, we simulate the behavior of these algorithms during runtime using Simulation of Urban Mobility (SUMO) package and TRACI. We have chosen Dijkstra, the most wellknown shortest path algorithm, to be the first algorithm to be implemented in SUMO. Upon reception of any traffic conditions update that affects the current optimal route of a car, we use TRACI to re-apply the algorithm and change this cars route accordingly. In the near future, our target is to simulate other algorithms and compare their performance based on the quality of the obtained best route.

ACS Style

Vi Tran Ngoc Nha; Soufiene Djahel; John Murphy. A comparative study of vehicles' routing algorithms for route planning in smart cities. 2012 First International Workshop on Vehicular Traffic Management for Smart Cities (VTM) 2012, 1 -6.

AMA Style

Vi Tran Ngoc Nha, Soufiene Djahel, John Murphy. A comparative study of vehicles' routing algorithms for route planning in smart cities. 2012 First International Workshop on Vehicular Traffic Management for Smart Cities (VTM). 2012; ():1-6.

Chicago/Turabian Style

Vi Tran Ngoc Nha; Soufiene Djahel; John Murphy. 2012. "A comparative study of vehicles' routing algorithms for route planning in smart cities." 2012 First International Workshop on Vehicular Traffic Management for Smart Cities (VTM) , no. : 1-6.

Journal article
Published: 06 August 2012 in IEEE Wireless Communications Letters
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In this paper, we deal with backoff cheating technique in IEEE802.11 based MANETs and propose a novel scheme, dubbed HsF-MAC (Hash Function based MAC protocol), to cope with it. In contrast to the existing solutions, HsF-MAC allows MANET nodes to re-calculate the backoff value used by their 1-hop neighbors and immediately detect the misbehaving ones. Moreover, the colluding behavior of two cheating nodes is also considered along with effective countermeasures. A reconciliation based reaction mechanism is finally designed. The simulation results, under different topologies and network conditions, have validated the effectiveness of HsF-MAC.

ACS Style

Soufiene Djahel; Zonghua Zhang; Farid Nait-Abdesselam; John Murphy. Fast and Efficient Countermeasure for MAC Layer Misbehavior in MANETs. IEEE Wireless Communications Letters 2012, 1, 540 -543.

AMA Style

Soufiene Djahel, Zonghua Zhang, Farid Nait-Abdesselam, John Murphy. Fast and Efficient Countermeasure for MAC Layer Misbehavior in MANETs. IEEE Wireless Communications Letters. 2012; 1 (5):540-543.

Chicago/Turabian Style

Soufiene Djahel; Zonghua Zhang; Farid Nait-Abdesselam; John Murphy. 2012. "Fast and Efficient Countermeasure for MAC Layer Misbehavior in MANETs." IEEE Wireless Communications Letters 1, no. 5: 540-543.

Conference paper
Published: 01 June 2012 in 2012 International Conference on Communications and Information Technology (ICCIT)
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In this paper we propose an approach to improve the quality of service (QoS) routing in the optimized link state routing protocol. The OLSR protocol operates generally in a best effort mode by finding the shortest path between a source and a destination without any quality of service consideration. We argue that an optimal path is not always the shortest path, and based on the network configuration and load, other alternatives such as a longer path with a high bandwidth might be of a better interest. To provide such alternatives and improve the communication quality among end users, our approach proposes to perform at each node an estimation of the bandwidth share between all adjacent nodes and tends to ensure the selection of a path with all MPRs that provide a higher bandwidth along the path. The bandwidth share estimation on each link is based on the study of conflict graphs to derive the set of maximal cliques. Once the bandwidth share estimation is done, instead of choosing the shortest path following the usual heuristic in OLSR, we try to find the path that ensures the highest bandwidth among all possible paths between the source node and the destination node. Results from simulation experiments show that the proposed approach achieves a higher performance than the standard OLSR used in wireless mesh networks.

ACS Style

Dalil Moad; Soufiene Djahel; Farid Nait-Abdesselam. Improving the quality of service routing in OLSR protocol. 2012 International Conference on Communications and Information Technology (ICCIT) 2012, 314 -319.

AMA Style

Dalil Moad, Soufiene Djahel, Farid Nait-Abdesselam. Improving the quality of service routing in OLSR protocol. 2012 International Conference on Communications and Information Technology (ICCIT). 2012; ():314-319.

Chicago/Turabian Style

Dalil Moad; Soufiene Djahel; Farid Nait-Abdesselam. 2012. "Improving the quality of service routing in OLSR protocol." 2012 International Conference on Communications and Information Technology (ICCIT) , no. : 314-319.

Conference paper
Published: 01 January 2012 in 2012 IEEE Consumer Communications and Networking Conference (CCNC)
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Fast transmission of event-driven warning messages and energy conservation are primary concerns to design robust Hybrid Sensors and Vehicular Networks (HSVNs). In last few years, several protocols have been proposed to address these issues. However, the tradeoff between energy consumption and latency has not been carefully studied and sometimes it is given higher priority than event detection efficiency which remains the first objective of HSVNs. Unlike the existing works, we propose a framework that provides equilibrium between the following three metrics of HSVNs; dangerous events detection, energy consumption and transmission delay. The main advantage of our framework is its ability to ensure an effective detection of dangers on the road and timely transmission of the corresponding warning messages towards the passing by vehicles. This is achieved through the proposed mechanism to switch the sensors' status between sleep and active modes as well as the devised communication scheme between WSN-Gateway and the vehicles cluster head. The preliminary simulation results confirm the effectiveness of our framework and encourage us to pursue further investigation to extend it.

ACS Style

Soufiene Djahel; Yacine Ghamri-Doudane. A framework for efficient communication in Hybrid Sensor and Vehicular Networks. 2012 IEEE Consumer Communications and Networking Conference (CCNC) 2012, 209 -214.

AMA Style

Soufiene Djahel, Yacine Ghamri-Doudane. A framework for efficient communication in Hybrid Sensor and Vehicular Networks. 2012 IEEE Consumer Communications and Networking Conference (CCNC). 2012; ():209-214.

Chicago/Turabian Style

Soufiene Djahel; Yacine Ghamri-Doudane. 2012. "A framework for efficient communication in Hybrid Sensor and Vehicular Networks." 2012 IEEE Consumer Communications and Networking Conference (CCNC) , no. : 209-214.

Journal article
Published: 22 February 2011 in Security and Communication Networks
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ACS Style

Soufiene Djahel; Damla Turgut; Farid Naït-Abdesselam. Characterizing the greedy behavior in wireless ad hoc networks. Security and Communication Networks 2011, 4, 284 -298.

AMA Style

Soufiene Djahel, Damla Turgut, Farid Naït-Abdesselam. Characterizing the greedy behavior in wireless ad hoc networks. Security and Communication Networks. 2011; 4 (3):284-298.

Chicago/Turabian Style

Soufiene Djahel; Damla Turgut; Farid Naït-Abdesselam. 2011. "Characterizing the greedy behavior in wireless ad hoc networks." Security and Communication Networks 4, no. 3: 284-298.