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Yassine Hadjadj-Aoul
Department of Computer Science, University of Rennes, Inria, CNRS, IRISA, 35000 Rennes, France

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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: 19 January 2019 in Journal of Network and Computer Applications
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In the last few years, Networks Operators (NO) have experienced an increased number of requests for video contents and rich media services, which are becoming increasingly popular. In view of the network scaling limitations, operators are developing their own caching systems to speed up the network performance. Indeed, disseminating caches in the infrastructure not only helps in absorbing the network's congestion, but in addition, brings content closer to users, which allows a reduced latency. Several studies have focused on improving the performance of such caching systems, especially in the context of Content-Centric Networking (CCN). In this paper, we propose a fairly generic model of caching systems that can be adapted very easily to represent different caching strategies, even the most advanced ones. Indeed, the proposed model of a single cache, named MACS, which stands for Markov chain-based Approximation of CCN Caching Systems, can be extended to represent an interconnection of caches under different schemes. In order to demonstrate the accuracy of our model, we proposed to derive the two most effective techniques in the literature, namely LCD and LRU-K, which may adapt to changing patterns of access. Simulation results using a discrete event simulator clearly show the accuracy of the proposed model under different network configurations.

ACS Style

Hamza Ben-Ammar; Yassine Hadjadj-Aoul; Gerardo Rubino; Soraya Ait-Chellouche. On the performance analysis of distributed caching systems using a customizable Markov chain model. Journal of Network and Computer Applications 2019, 130, 39 -51.

AMA Style

Hamza Ben-Ammar, Yassine Hadjadj-Aoul, Gerardo Rubino, Soraya Ait-Chellouche. On the performance analysis of distributed caching systems using a customizable Markov chain model. Journal of Network and Computer Applications. 2019; 130 ():39-51.

Chicago/Turabian Style

Hamza Ben-Ammar; Yassine Hadjadj-Aoul; Gerardo Rubino; Soraya Ait-Chellouche. 2019. "On the performance analysis of distributed caching systems using a customizable Markov chain model." Journal of Network and Computer Applications 130, no. : 39-51.

Journal article
Published: 01 November 2012 in IEEE Network
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One of the most important problems posed by cellular-based machine type communications is congestion. Congestion concerns all the parts of the network, both the radio and the core network impacting both the user data plane and the control plane. In this article, we address the problem of congestion in machine type communications. We propose a congestion-aware admission control solution that selectively rejects signaling messages from MTC devices at the radio access network following a probability that is set based on a proportional integrative derivative controller reflecting the congestion level of a relevant core network node. We evaluate the performance of our proposed solution using computer simulations. The obtained results are encouraging. In fact, we succeed in reducing the amount of signaling while maintaining a target utilization ratio of resources in the core network.

ACS Style

Adlen Ksentini; Yassine Hadjadj-Aoul; Tarik Taleb. Cellular-based machine-to-machine: overload control. IEEE Network 2012, 26, 54 -60.

AMA Style

Adlen Ksentini, Yassine Hadjadj-Aoul, Tarik Taleb. Cellular-based machine-to-machine: overload control. IEEE Network. 2012; 26 (6):54-60.

Chicago/Turabian Style

Adlen Ksentini; Yassine Hadjadj-Aoul; Tarik Taleb. 2012. "Cellular-based machine-to-machine: overload control." IEEE Network 26, no. 6: 54-60.