Soumissions récentes

  • A framework for space-efficient read clustering in metagenomic samples 

    Alanko, Jarno; Cunial, Fabio; Belazzougui, Djamal; Mäkinen, Veli
    In : (BioMed Central, 2017-03-14)
    Background: A metagenomic sample is a set of DNA fragments, randomly extracted from multiple cells in an environment, belonging to distinct, often unknown species. Unsupervised metagenomic clustering aims at partitioning a metagenomic sample into sets that approximate taxonomic units, without using reference genomes. ...
  • REFIACC: Reliable, efficient, fair and interference-aware congestion control protocol for wireless sensor networks 

    Kafi, Mohamed Amine; Ben-Othman, Jalel; Ouadjaout, Abdelraouf; Bagaa, Miloud
    In : (Elsevier, 2017)
    The recent wireless sensor network applications are resource greedy in terms of throughput and net- work reliability. However, the wireless shared medium leads to links interferences in addition to wireless losses due to the harsh environment. The effect of these two points translates on differences in links bandwidth ...
  • Efficient On-Demand Multi-Node Charging Techniques for Wireless Sensor Networks 

    Khelladi, Lyes; Djenouri, Djamel; Rossi, Michele; Badache, Nadjib
    In : (Elsevier, 2016-10-01)
    This paper deals with wireless charging in sensor networks and explores efficient policies to perform simultaneous multi-node power transfer through a mobile charger (MC).The proposed solution, called On-demand Multi-node Charging (OMC), features an original threshold-based tour launching (TTL) strategy, using request ...
  • Performance analysis and evaluation of REFIACC using queuing networks 

    Kafi, Mohamed Amine; Ben Othman, Jalel; Mokdad, Lynda; Badache, Nadjib
    In : (Elsevier, 2017-02)
    Wireless Sensor Networks (WSN) utilisation is characterised by its dense deployment in order to fulfil the monitoring tasks. This density of communication leads to interference and congestion. In a previous work, a schedule scheme dubbed REFIACC (Reliable, Efficient, Fair and Interference Aware Congestion Control), that ...
  • One-Step Approach for Two-Tiered Constrained Relay Node Placement in Wireless Sensor Networks 

    Cheli, Ali; Bagaa, Miloud; Djenouri, Djamel; Balasingham, Ilangko; Taleb, Tarik
    In : (IEEE Communications Society, 2016-06)
    We consider in this letter the problem of constrained relay node (RN) placement where sensor nodes must be connected to base stations by using a minimum number of RNs. The latter can only be deployed at a set of predefined locations, and the two-tiered topology is considered where only RNs are responsible for traffic ...
  • MAC Protocols with Wake-up Radio for Wireless Sensor Networks: A Review 

    Djiroun, Fatma Zohra; Djenouri, Djamel
    In : (IEEE Communications Society, 2016-10)
    The use of a low-power wake-up radio in wireless sensor networks is considered in this paper, where relevant medium access control solutions are studied. A variety of asynchronous wake-up MAC protocols have been proposed in the literature, which take advantage of integrating a second radio to the main one for waking it ...
  • Delay-efficient MAC protocol with traffic differentiation and run-time parameter adaptation for energy-constrained wireless sensor networks 

    Doudou, Messaoud; Djenouri, Djamel; M. Barcelo-Ordinas, Jose; Badache, Nadjib
    In : (Springer, 2016-02)
    This paper presents an asynchronous cascading wake-up MAC protocol for heterogeneous traffic gathering in low-power wireless sensor networks. It jointly considers energy/delay optimization and switches between two modes, according to the traffic type and delay requirements. The first mode is high duty cycle, where energy ...
  • Performance Optimization of Duty-Cycled MAC in Delay-Energy Constrained Sensor Network Under Uniform and Non-Uniform Traffic Generation 

    Doudou, Messaoud; M. Barcelo-Ordinas, Jose; Djenouri, Djamel; Badache, Nadjib; Garcia-Vidal, Jorge
    In : (interscience.wiley, 2016)
    Duty-Cycle at the MAC layer plays a key role in energy savings and network lifetime extension. It consists in putting a node’s radio in the sleep state as soon as it has no communication activity. Traditional WSN MAC protocols are designed with short duty cycles at the cost of long delays. Careful design is required for ...
  • Game Theory Framework for MAC Parameter Optimization in Energy-Delay Constrained Sensor Networks 

    Doudou, Messaoud; M. Barcelo-Ordinas, Jose; Djenouri, Djamel; Garcia-Vidal, Jorge; Bouabdallah, Abdelmadjid; Badache, Nadjib
    In : (ACM, 2016-05-15)
    Optimizing energy consumption and end-to-end (e2e) packet delay in energy-constrained, delay-sensitive wireless sensor networks is a conflicting multi-objective optimization problem. We investigate the problem from a game theory perspective, where the two optimization objectives are considered as game players. The cost ...
  • REFIACC: Reliable, Efficient, Fair and Interference-Aware Congestion Control Protocol for Wireless Sensor Networks 

    Kafi, Mohamed Amine; Ben Othman, Jalel; Ouadjaout, Abdelraouf; Bagaa, Miloud; Badache, Nadjib
    In : (Elsevier, 2016-05-28)
    The recent wireless sensor network applications are resource greedy in terms of throughput and network reliability. However, the wireless shared medium leads to links interferences in addition to wireless losses due to the harsh environment. The effect of these two points translates on differences in links bandwidth ...
  • CCS_WHMS: A Congestion Control Scheme for Wearable Health Management System 

    Kafi, Mohamed Amine; Ben Othman, Jalel; Bagaa, Miloud; Badache, Nadjib
    In : (Springer Link, 2015-10-21)
    Wearable computing is becoming a more and more attracting field in the last years thanks to the miniaturisation of electronic devices. Wearable healthcare monitoring systems (WHMS) as an important client of wearable computing technology has gained a lot. Indeed, the wearable sensors and their surrounding healthcare ...
  • Indexing and querying color sets of images 

    Belazzougui, Djamal; Kolpakov, Roman; Raffinot, Mathieu
    In : (Springer Varlag, 2016-09-27)
    We aim to study the set of color sets of continuous regions of an image given as a matrix of m rows over n ≥ m columns where each element in the matrix is an integer from [1,σ] named a color . The set of distinct colors in a region is called fingerprint. We aim to compute, index and query the fingerprints of all rectangular ...
  • Optimal Las Vegas reduction from one-way set reconciliation to error correction 

    Belazzougui, Djamal
    In : (Springer Varlag, 2016-03-28)
    Suppose we have two players A and C, where player A has a string s[0..u−1] and player C has a string t[0..u−1] and none of the two players knows the other's string. Assume that s and t are both over an integer alphabet [σ]=[0,σ−1], where the first string contains n non-zero entries. We would wish to answer the ...
  • Distributed Low-Latency Data Aggregation Scheduling in Wireless Sensor Networks 

    Bagaa, Miloud; Younis, Mohamed; Djenouri, Djamel; Derhab, Abdelouahid; Badache, Nadjib
    In : (ACM, 2015-04)
    This article considers the data aggregation scheduling problem, where a collision-free schedule is determined in a distributed way to route the aggregated data from all the sensor nodes to the base station within the least time duration. The algorithm proposed in this article (Distributed algorithm for Integrated tree ...
  • Synchronization Protocols and Implementation Issues in Wireless Sensor Networks: A Review 

    Djenouri, Djamel; Bagaa, Miloud
    In : (IEEE, 2016-06)
    Time synchronization in wireless sensor networks (WSNs) is a topic that has been attracting the research community in the last decade. Most performance evaluations of the proposed solutions have been limited to theoretical analysis and simulation. They consequently ignored several practical aspects, e.g., packet handling ...
  • Networked Wireless Sensors, Active RFID, and Handheld Devices for Modern Car Park Management: WSN, RFID, and Mob Devs for Car Park Management 

    Djenouri, Djamel; Karbab, Elmouatezbillah; Sahar, Boulkaboul; Antoine, Bagula
    In : (IGI, 2015-12)
    Networked wireless sensors, actuators, RFID, and mobile computing technologies are explored in this paper on the quest for modern car park management systems with sophisticated services over the emerging internet of things (IoT), where things such as ubiquitous handheld computers, smart ubiquitous sensors, RFID ...
  • Reducing thread divergence in GPU-based bees swarm optimization applied to association rule mining 

    Bendjoudi, Ahcène; Djenouri, Youcef; Habbas, Zineb; Mehdi, Malika; Djenouri, Djamel
    In : (John Wiley & Sons, Ltd., 2016)
    The association rules mining (ARM) problem is one of the most important problems in the area of data mining. It aims at finding all relevant association rules from transactional databases. It is CPU time intensive and requires a huge computing power when dealing with large transactional databases. To deal with this issue, ...
  • Adaptive Fault Tolerant Checkpointing Algorithm for Cluster Based Mobile Ad Hoc Networks 

    Mansouri, Houssem; Badache, Nadjib; Aliouat, Makhlouf; Pathan, Al-Sakib Khan
    In : (Elsevier, 2015)
    Mobile Ad hoc NETwork (MANET) is a type of wireless network consisting of a set of self-configured mobile hosts that can communicate with each other using wireless links without the assistance of any fixed infrastructure. This has made possible to create a distributed mobile computing application and has also brought ...
  • An end-to-end secure key management protocol for e-health applications 

    Abdmeziem, Mohammed Riyadh; Tandjaoui, Djamel
    In : (Elsevier, 2015)
    Key distribution is required to secure e-health applications in the context of Internet of Things (IoT). However, resources constraints in IoT make these applications unable to run existing key management protocols. In this paper, we propose a new lightweight key management protocol. This protocol is based on collaboration ...
  • Delay-efficient MAC protocol with traffic differentiation and run-time parameter adaptation for energy-constrained wireless sensor networks 

    Doudou, Messaoud; Djenouri, Djamel; Barcelo-Ordinas, Jose M.; Badache, Nadjib
    In : (Springer US, 2015-06)
    This paper presents an asynchronous cascading wake-up MAC protocol for heterogeneous traffic gathering in low-power wireless sensor networks. It jointly considers energy/delay optimization and switches between two modes, according to the traffic type and delay requirements. The first mode is high duty cycle, where energy ...

View more