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description Publicationkeyboard_double_arrow_right Article , Other literature type 2020 FranceAuthors: Bruniaux, Amaury; Koutsiamanis, Remous-Aris; Papadopoulos, Georgios; Montavont, Nicolas;Bruniaux, Amaury; Koutsiamanis, Remous-Aris; Papadopoulos, Georgios; Montavont, Nicolas;pmid: 33801306
pmc: PMC7958323
The emergence of the Internet of Things (IoT) has made wireless connectivity ubiquitous and necessary. Extending the IoT to the Industrial Internet of Things (IIoT) places significant demands in terms of reliability on wireless connectivity. The Institute of Electrical and Electronics Engineers (IEEE) Std 802.15.4-2015 standard was designed in response to these demands, and the IPv6 over Low power Wireless Personal Area Networks (6LoWPAN) adaptation layer was introduced to address (among other issues) its payload size limitations by performing packet compression and fragmentation. However, the standardised method does not cope well with low link-quality situations and, thus, we present the state-of-the-art Forward Error Correction (FEC) methods and introduce our own contribution, Network Coding FEC (NCFEC), to improve performance in these situations. We present and analyse the existing methods as well as our own theoretically, and we then implement them and perform an experimental evaluation using the 6TiSCH simulator. The simulation results demonstrate that when high reliability is required and only low quality links are available, NCFEC performs best, with a trade-off between additional network and computational overhead. In situations where the link quality can be guaranteed to be higher, simpler solutions also start to be feasible, but with reduced adaptation flexibility. International audience
HAL-Rennes 1; INRIA ... arrow_drop_down SensorsOther literature type . 2021License: CC BYFull-Text: http://www.mdpi.com/1424-8220/21/5/1711/pdfData sources: Multidisciplinary Digital Publishing InstituteSensorsArticle . 2021Full-Text: http://europepmc.org/articles/PMC7958323Data sources: PubMed Centraladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=PMC7958323&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert HAL-Rennes 1; INRIA ... arrow_drop_down SensorsOther literature type . 2021License: CC BYFull-Text: http://www.mdpi.com/1424-8220/21/5/1711/pdfData sources: Multidisciplinary Digital Publishing InstituteSensorsArticle . 2021Full-Text: http://europepmc.org/articles/PMC7958323Data sources: PubMed Centraladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=PMC7958323&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object 2023 FrancePublisher:IEEE Authors: Gaudin, Nicolas; Hatchikian-Houdot, Jean-Loup; Besson, Frédéric; Cotret, Pascal; +4 AuthorsGaudin, Nicolas; Hatchikian-Houdot, Jean-Loup; Besson, Frédéric; Cotret, Pascal; Guy, Gogniat; Hiet, Guillaume; Lapotre, Vianney; Wilke, Pierre;Timing side-channels are an identified threat for security critical software. Existing countermeasures have a cost either on the hardware requirements or execution time. We focus on low-cost microcontrollers that have a very low computational capacity. Although these processors do not feature out-of-order execution or speculation, they remain vulnerable to timing attacks exploiting the varying latencies of ALU operations or memory accesses. We propose to augment the RISC-V ISA with security primitives that have a guaranteed timing behavior. These primitives allow constant time ALU operations and memory accesses that do not alter the state of the cache. Our approach has a low overhead in terms of hardware cost, binary code size, and execution time both for the constant time secure program and other programs running concurrently on the same hardware. International audience
https://doi.org/10.1... arrow_drop_down https://doi.org/10.1109/eurosp...Conference object . 2023 . Peer-reviewedLicense: STM Policy #29Data sources: CrossrefHAL-Rennes 1; INRIA a CCSD electronic archive server; Mémoires en Sciences de l'Information et de la CommunicationConference object . 2023License: CC BYFull-Text: https://hal.science/hal-04155139/documentadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1109/eurospw59978.2023.00038&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert https://doi.org/10.1... arrow_drop_down https://doi.org/10.1109/eurosp...Conference object . 2023 . Peer-reviewedLicense: STM Policy #29Data sources: CrossrefHAL-Rennes 1; INRIA a CCSD electronic archive server; Mémoires en Sciences de l'Information et de la CommunicationConference object . 2023License: CC BYFull-Text: https://hal.science/hal-04155139/documentadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1109/eurospw59978.2023.00038&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2023 FrancePublisher:MDPI AG Authors: Muhammad Fitra Zambak; Samir Salem Al-Bawri; Muzammil Jusoh; Ali Hanafiah Rambe; +3 AuthorsMuhammad Fitra Zambak; Samir Salem Al-Bawri; Muzammil Jusoh; Ali Hanafiah Rambe; Hamsakutty Vettikalladi; Ali M. Albishi; Mohamed Himdi;Wireless communication technology integration is necessary for Internet of Things (IoT)-based applications to make their data easily accessible. This study proposes a new, portable L-shaped microstrip patch antenna with enhanced gain for IoT 2.4 GHz Industrial, Scientific, and Medical (ISM) applications. The overall dimensions of the antenna are 28 mm × 21 mm × 1.6 mm (0.22λo × 0.17λo × 0.013λo, with respect to the lowest frequency). The antenna design is simply comprised of an L-shape strip line, with a full ground applied in the back side and integrated with a tiny rectangular slot. According to investigations, the developed antenna is more efficient and has a greater gain than conventional antennas. The flexibility of the antenna’s matching impedance and performance are investigated through several parametric simulations. Results indicate that the gain and efficiency can be enhanced through modifying the rectangular back slot in conjunction with fine-tuning the front L-shaped patch. The finalized antenna operates at 2.4 GHz with a 98% radiation efficiency and peak gains of 2.09 dBi (measured) and 1.95 dBi (simulated). The performance of the simulation and measurement are found to be in good agreement. Based on the performance that was achieved, the developed L-shaped antenna can be used in a variety of 2.4 GHz ISM bands and IoT application environments, especially for indoor localization estimation scenarios, such as smart offices and houses, and fourth-generation (4G) wireless communications applications due to its small size and high fractional bandwidth. International audience
HAL-Rennes 1; Mémoir... arrow_drop_down ElectronicsOther literature type . Article . 2023 . Peer-reviewedLicense: CC BYFull-Text: http://www.mdpi.com/2079-9292/12/9/2149/pdfadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3390/electronics12092149&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 1 citations 1 popularity Average influence Average impulse Average Powered by BIP!more_vert HAL-Rennes 1; Mémoir... arrow_drop_down ElectronicsOther literature type . Article . 2023 . Peer-reviewedLicense: CC BYFull-Text: http://www.mdpi.com/2079-9292/12/9/2149/pdfadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3390/electronics12092149&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object 2023 FrancePublisher:IEEE Zhao, Deng; Zhou, Zhangbing; Xue, Xiao; Diao, Jin; Yangui, Sami; Liu, Bo; Gaaloul, Walid;With the wide-adoption of edge computing, the functionalities of Internet of Things (IoT) devices can be encapsulated as edge services, to facilitate domain applications through edge service compositions. Considering the capacity-fluctuating and resource-varying of IoT devices, edge service monitoring is essential to guarantee the healthy of their compositions at runtime. Current techniques focus mostly on the monitoring of atomic edge services, which, however, are inadequate for that of inter-and composite services. Besides, constraints to be monitored are usually pre-specified, although certain parameters may have to be adapted online according to execution context. To address these challenges, this paper proposes a novel logic-based adaptive monitoring mechanism, to achieve the interpretation of temporal constraints and time-dependent QoS constraints upon intra-, inter-, and composite services. Leveraging our proposed Compositional Signal Temporal Logic (CSTL) with extended compositional modalities and online parameter settings, constraints can be converted to CSTL formulae, and QoS variations and temporal violations are interpreted qualitatively and quantitatively at runtime. Extensive experiments are conducted upon publicly-available datasets, and evaluation results demonstrate that our CSTL performs better than baseline techniques in terms of expressiveness, applicability, and robustness. International audience
https://doi.org/10.1... arrow_drop_down https://doi.org/10.1109/icws60...Conference object . 2023 . Peer-reviewedLicense: STM Policy #29Data sources: CrossrefHAL-Rennes 1; Mémoires en Sciences de l'Information et de la CommunicationConference object . 2023add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1109/icws60048.2023.00050&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert https://doi.org/10.1... arrow_drop_down https://doi.org/10.1109/icws60...Conference object . 2023 . Peer-reviewedLicense: STM Policy #29Data sources: CrossrefHAL-Rennes 1; Mémoires en Sciences de l'Information et de la CommunicationConference object . 2023add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1109/icws60048.2023.00050&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Doctoral thesis 2019 France EnglishPublisher:HAL CCSD Authors: Beaulaton, Delphine;Beaulaton, Delphine;LoT is a rapidly emerging paradigm that provides a way to the user to instrument and control a large variety of objects interacting between each other over the Internet. In IoT systems, the security risks are multiplied as they involve hetero- geneous devices that are connected to a shared network and that carry critical tasks, and hence, are targets for malicious users. In this thesis, we propose a security-based framework for modeling IoT systems where attack trees are defined alongside the model to detect and prevent security risks in the system. The language we implemented aims to model the IoT paradigm in a simple way. The IoT systems are composed of entities having some communication capabilities between each other. Two entities can communicate if (i) they are connected through a communication protocol and (ii) they satisfy some constraints imposed by the protocol. In order to identify and analyze attacks on the security of a system we use attack trees which are an intuitive and practical formal method to do so. A successful attack can be a rare event in the execution of a well-designed system. When rare, such attacks are hard to detect with usual model checking techniques. Hence, we use importance splitting as a statistical model checking technique for rare events. L’Internet des Objects (IoT) est un modèle qui évolue rapidement et qui permet à des utilisateursd’utiliser et contrôler une large variété d’objets connectés entre eux. Ces environnementsconnectés augmentent la surface d’attaque d’un système puisque les risques sont multipliés parle nombre d’appareils connectés. Ces appareils sont responsables de tâches plus ou moinscritiques, et peuvent donc être la cible d’utilisateurs malveillants. Dans ce travail de thèse nousprésentons une méthodologie pour évaluer la sécurité de systèmes IoT. Nous proposons unemanière de représenter les systèmes IoT, couplée avec des arbres d’attaques afin d’évaluer leschances de succès d’une attaque sur un système donné. La représentation des systèmes est faitevia un langage formel que nous avons développé : SOML (Security Oriented Modeling Language).Ce langage permet de définir le comportement des différents acteurs du système et d’ajouterdes probabilités sur leurs actions. L’abre d’attaque nous offre un moyen simple et formel dereprésenter de possibles attaques sur le système. L’analyse probabiliste est ensuite effectuée viaun outil de Statistical Model Checking : Plasma. Nous utilisons deux algorithmescomplémentaires pour effectuer cette analyse : Monte Carlo et importance splitting.
HAL-Rennes 1; INRIA ... arrow_drop_down HAL-Rennes 1; INRIA a CCSD electronic archive serverDoctoral thesis . 2019HAL-Rennes 1; Mémoires en Sciences de l'Information et de la CommunicationDoctoral thesis . 2019All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2755::394d4640e760a7736a40c87040c50f84&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert HAL-Rennes 1; INRIA ... arrow_drop_down HAL-Rennes 1; INRIA a CCSD electronic archive serverDoctoral thesis . 2019HAL-Rennes 1; Mémoires en Sciences de l'Information et de la CommunicationDoctoral thesis . 2019All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2755::394d4640e760a7736a40c87040c50f84&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Doctoral thesis 2018 France EnglishPublisher:HAL CCSD Authors: Mokh, Ali;Mokh, Ali;L'Internet des objets est l'un des concepts clefs stimulant l'évolution des réseaux mobiles dans le but de leur donner de nouvelles fonctionnalités de communication et de gestion d'objets dits connectés. Comparativement aux terminaux mobiles standards, les usages associés à ces objets connectés sont en général caractérisés par des débits modestes et de faibles ressources en capacité de calcul et en énergie. Les techniques de modulation spatiale (SM) sont proposées comme une solution prometteuse pour assurer les débits des objets connectés tout en maîtrisant le critère de la consommation énergétique. L'objectif de cette thèse est d'étudier les performances de différents schémas de transmission basés sur le concept SM mis en oeuvre en transmission ou en réception. Nous avons notamment proposé un système global de communication en liaisons montante (SM en transmission) et descendante (SM en réception) entre une station de base et un objet, dans lequel l'essentiel de la complexité de calcul est concentré à la station de base. Par ce système, une liaison avec un objet peut être établie en limitant les traitements au sein de l'objet à di simples fonctions d'activation/désactivation d'antenne et de détection à seuil. Par ailleurs, nous avons proposé des schémas SM étendus grâce auxquels l'efficacité spectrale atteignable devient égale au nombre d'antennes au sein de l'objet. Les expressions analytiques de la probabilité d'erreur binaire ont été développées pour l'ensemble des systèmes étudiés en utilisant différentes méthodes de détection. L'impact de la connaissance imparfaite de l'état des canaux de propagation ainsi que l'effet des corrélations entre antennes ont également été incorporés dans l'étude des performances des schémas SM de réception. Dans une dernière partie, nous avons proposé d'adapter les schémas SM de réception dans un environnement de propagation en ondes millimétriques en utilisant une formation de faisceau hybride analogique/numérique au niveau de l'émetteur. Internet of Things is one of the keyword that represents the evolution in 5G that is able to connect the so-called Connected Devices (CD) to the network. These CDs are expected to require modest data rates and will be characterized by low resources in terms of both computation and energy consumption compared to other mobile multi-media devices. Spatial Modulation (SM) is proposed to be a promising solution to boost the data rate of the CD with a small ( or no) increase in energy consumption. Inspired by the advantages of SM, the objective of this thesis is to study the performance of different transmission scheme based on the SM concept at the transmitter and at tht receiver, for respectively an uplink and a downlink transmission between a BS and a CD. We proposed a global system where the higher computational complexity remains at the BS: The transmit SM is used for uplink, and the receive SM for downlink. It is shown that with SM, an ONOFF keying for uplink and Single Tap detector for downlink could be sufficient for the transmission a the CD. Also, with Extended SM schemes, we increased the spectral efficiency of SM to be equal t< the number of antennas of CD in both uplink and downlink transmission. A framework for the derivation of the Bit Error Probability (BEP) is developed for all schemes with different detection methods. Impact of imperfect CSIT transmission has been studied when linear precoding is implemented for the receive spatial modulation, as well as the effect of antenna correlations. Finally we proposed to adapte the spatial modulation at the receiver with the mmWave environment, using hybrid beamformina at the transmitter.
All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=dedup_wf_002::cd562b40514361c847e2c98d7c7e8347&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=dedup_wf_002::cd562b40514361c847e2c98d7c7e8347&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object 2022 FrancePublisher:IEEE Authors: Molina Araque, Sebastian; Martinez, Ivan; Papadopoulos, Georgios; Montavont, Nicolas; +1 AuthorsMolina Araque, Sebastian; Martinez, Ivan; Papadopoulos, Georgios; Montavont, Nicolas; Toutain, Laurent;Nowadays, we are facing an era where the Internet of Things (IoT) is growing intensively and IoT devices are being deployed massively. At this point, interoperability with the information system is a major issue for the accelerated device deployment. Most of the time, IoT information is presented as Time Series (TS). However, no standardized representation format has emerged, while the majority of the studies in the literature focus on the compression, processing, or prediction of TS. In this paper, we propose a versatile format for TS representation based on the Concise Binary Object Representation (CBOR). This representation exploits CBOR to be compact thanks to the introduction of deltas to represent measurements, tags to represent variables, and templates to transform our TS representation into the data format required by information systems. Our preliminary results show that the data collected by IoT devices can be regrouped compactly. Indeed, for the cases evaluated we have proven that the total amount of data to be sent can be reduced between 76% and 96% when compared against JavaScript Object Notation (JSON). Finally, by lowering the amount of data transmitted while keeping the same amount of information delivered, our approach has the potential to extend the battery life of IoT devices and their useful life. International audience
HAL-Rennes 1; INRIA ... arrow_drop_down https://doi.org/10.1109/giis56...Conference object . 2022 . Peer-reviewedLicense: STM Policy #29Data sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1109/giis56506.2022.9936910&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert HAL-Rennes 1; INRIA ... arrow_drop_down https://doi.org/10.1109/giis56...Conference object . 2022 . Peer-reviewedLicense: STM Policy #29Data sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1109/giis56506.2022.9936910&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object 2017 France EnglishPublisher:HAL CCSD Authors: Kersalé, Maurine; Papadopoulos, Georgios; Fiore, Julián, M Del; Thubert, Pascal; +1 AuthorsKersalé, Maurine; Papadopoulos, Georgios; Fiore, Julián, M Del; Thubert, Pascal; Montavont, Nicolas;La volonté d'utiliser l'Internet des Objets dans le secteur de l'industrie offre de nouvelles perspectives pour développer des technologies standardsàstandards`standardsà bas cout, mais exigé egalement des extensions et adaptationsàadaptations`adaptationsà ces nouveaux applicatifs. Les standards actuels reposent sur des systèmes de détection d'erreur et de retransmissions qui engendrent des latences et des comportements imprévisibles du système. Ce papier présente un algorithme appelé Collaboration Leapfrog quíquí etend les fonctionnalités de routage offertes par le protocole RPL dans un réseau multi-sauts. Leapfrog s'appuie sur la diversité spatiale du medium pour créer des cheminsparalì eles permettant ainsi d'anticiper leséventuellesles´leséventuelles pertes de paquets. A travers une implémentation dans le simulateur Cooja, nous montrons que notre extension permet de mieux maitriser la gigue des paquets de données pour la traversée du réseau. International audience
HAL-Rennes 1 arrow_drop_down HAL-Rennes 1Conference object . 2017Full-Text: https://hal.science/hal-01519185/documentData sources: HAL-Rennes 1All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2592::833803b9d913852e1015c7b22b67d948&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert HAL-Rennes 1 arrow_drop_down HAL-Rennes 1Conference object . 2017Full-Text: https://hal.science/hal-01519185/documentData sources: HAL-Rennes 1All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2592::833803b9d913852e1015c7b22b67d948&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object 2019 France EnglishPublisher:HAL CCSD Funded by:EC | ACHIEVEEC| ACHIEVEAuthors: Carballo-Hernández, W.; Berry, F.; Pelcat, Maxime; Arias-Estrada, M.;Carballo-Hernández, W.; Berry, F.; Pelcat, Maxime; Arias-Estrada, M.;The success of Deep Learning (DL) algorithms in computer vision tasks have created an ongoing demand of dedicated hardware architectures that could keep up with the their required computation and memory complexities. This task is particularly challenging when embedded smart camera platforms have constrained resources such as power consumption, Processing Element (PE) and communication. This article describes a heterogeneous system embedding an FPGA and a GPU for executing CNN inference for computer vision applications. The built system addresses some challenges of embedded CNN such as task and data partitioning, and workload balancing. The selected heterogeneous platform embeds an Nvidia® Jetson TX2 for the CPU-GPU side and an Intel Altera® Cyclone10GX for the FPGA side interconnected by PCIe Gen2 with a MIPI-CSI camera for prototyping. This test environment will be used as a support for future work on a methodology for optimized model partitioning. International audience
HAL Clermont Univers... arrow_drop_down HAL Clermont Université; HAL-Rennes 1; Mémoires en Sciences de l'Information et de la CommunicationConference object . 2019All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od_______212::45fa60556983d1ae9817d5ef19378ce0&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert HAL Clermont Univers... arrow_drop_down HAL Clermont Université; HAL-Rennes 1; Mémoires en Sciences de l'Information et de la CommunicationConference object . 2019All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od_______212::45fa60556983d1ae9817d5ef19378ce0&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object 2018 France EnglishPublisher:HAL CCSD Mroue, Hussein; Abbass, Nasser; Parrein, Benoît; Hamrioui, Sofiane; Motta-Cruz, Eduardo; Rouyer, Gilles;In this paper, the performance of Long Range(LoRa) Internet of Things (IoT) technology is investigated. Byconsidering Chirp Spread Spectrum (CSS) technique of LoRa,an approximation of the Bit Error Rate (BER) is presented andevaluated through intensive simulations. Unlike previous workswhich present the BER of LoRa in terms of the ratio of energyber bit to noise ratio only without any proofing, our presentedwork expresses BER in terms of LoRa’s modulation patterns suchas the spreading factor, the code rate, the symbol frequency andthe SNR. Numerical results are carried out in order to investigatethe LoRa performance and to illustrate the accuracy of the newBER expression. International audience
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2592::83197fd8e0d4d7e57ba423ada66334ab&type=result"></script>'); --> </script>
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description Publicationkeyboard_double_arrow_right Article , Other literature type 2020 FranceAuthors: Bruniaux, Amaury; Koutsiamanis, Remous-Aris; Papadopoulos, Georgios; Montavont, Nicolas;Bruniaux, Amaury; Koutsiamanis, Remous-Aris; Papadopoulos, Georgios; Montavont, Nicolas;pmid: 33801306
pmc: PMC7958323
The emergence of the Internet of Things (IoT) has made wireless connectivity ubiquitous and necessary. Extending the IoT to the Industrial Internet of Things (IIoT) places significant demands in terms of reliability on wireless connectivity. The Institute of Electrical and Electronics Engineers (IEEE) Std 802.15.4-2015 standard was designed in response to these demands, and the IPv6 over Low power Wireless Personal Area Networks (6LoWPAN) adaptation layer was introduced to address (among other issues) its payload size limitations by performing packet compression and fragmentation. However, the standardised method does not cope well with low link-quality situations and, thus, we present the state-of-the-art Forward Error Correction (FEC) methods and introduce our own contribution, Network Coding FEC (NCFEC), to improve performance in these situations. We present and analyse the existing methods as well as our own theoretically, and we then implement them and perform an experimental evaluation using the 6TiSCH simulator. The simulation results demonstrate that when high reliability is required and only low quality links are available, NCFEC performs best, with a trade-off between additional network and computational overhead. In situations where the link quality can be guaranteed to be higher, simpler solutions also start to be feasible, but with reduced adaptation flexibility. International audience
HAL-Rennes 1; INRIA ... arrow_drop_down SensorsOther literature type . 2021License: CC BYFull-Text: http://www.mdpi.com/1424-8220/21/5/1711/pdfData sources: Multidisciplinary Digital Publishing InstituteSensorsArticle . 2021Full-Text: http://europepmc.org/articles/PMC7958323Data sources: PubMed Centraladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=PMC7958323&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert HAL-Rennes 1; INRIA ... arrow_drop_down SensorsOther literature type . 2021License: CC BYFull-Text: http://www.mdpi.com/1424-8220/21/5/1711/pdfData sources: Multidisciplinary Digital Publishing InstituteSensorsArticle . 2021Full-Text: http://europepmc.org/articles/PMC7958323Data sources: PubMed Centraladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=PMC7958323&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object 2023 FrancePublisher:IEEE Authors: Gaudin, Nicolas; Hatchikian-Houdot, Jean-Loup; Besson, Frédéric; Cotret, Pascal; +4 AuthorsGaudin, Nicolas; Hatchikian-Houdot, Jean-Loup; Besson, Frédéric; Cotret, Pascal; Guy, Gogniat; Hiet, Guillaume; Lapotre, Vianney; Wilke, Pierre;Timing side-channels are an identified threat for security critical software. Existing countermeasures have a cost either on the hardware requirements or execution time. We focus on low-cost microcontrollers that have a very low computational capacity. Although these processors do not feature out-of-order execution or speculation, they remain vulnerable to timing attacks exploiting the varying latencies of ALU operations or memory accesses. We propose to augment the RISC-V ISA with security primitives that have a guaranteed timing behavior. These primitives allow constant time ALU operations and memory accesses that do not alter the state of the cache. Our approach has a low overhead in terms of hardware cost, binary code size, and execution time both for the constant time secure program and other programs running concurrently on the same hardware. International audience
https://doi.org/10.1... arrow_drop_down https://doi.org/10.1109/eurosp...Conference object . 2023 . Peer-reviewedLicense: STM Policy #29Data sources: CrossrefHAL-Rennes 1; INRIA a CCSD electronic archive server; Mémoires en Sciences de l'Information et de la CommunicationConference object . 2023License: CC BYFull-Text: https://hal.science/hal-04155139/documentadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1109/eurospw59978.2023.00038&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert https://doi.org/10.1... arrow_drop_down https://doi.org/10.1109/eurosp...Conference object . 2023 . Peer-reviewedLicense: STM Policy #29Data sources: CrossrefHAL-Rennes 1; INRIA a CCSD electronic archive server; Mémoires en Sciences de l'Information et de la CommunicationConference object . 2023License: CC BYFull-Text: https://hal.science/hal-04155139/documentadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1109/eurospw59978.2023.00038&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2023 FrancePublisher:MDPI AG Authors: Muhammad Fitra Zambak; Samir Salem Al-Bawri; Muzammil Jusoh; Ali Hanafiah Rambe; +3 AuthorsMuhammad Fitra Zambak; Samir Salem Al-Bawri; Muzammil Jusoh; Ali Hanafiah Rambe; Hamsakutty Vettikalladi; Ali M. Albishi; Mohamed Himdi;Wireless communication technology integration is necessary for Internet of Things (IoT)-based applications to make their data easily accessible. This study proposes a new, portable L-shaped microstrip patch antenna with enhanced gain for IoT 2.4 GHz Industrial, Scientific, and Medical (ISM) applications. The overall dimensions of the antenna are 28 mm × 21 mm × 1.6 mm (0.22λo × 0.17λo × 0.013λo, with respect to the lowest frequency). The antenna design is simply comprised of an L-shape strip line, with a full ground applied in the back side and integrated with a tiny rectangular slot. According to investigations, the developed antenna is more efficient and has a greater gain than conventional antennas. The flexibility of the antenna’s matching impedance and performance are investigated through several parametric simulations. Results indicate that the gain and efficiency can be enhanced through modifying the rectangular back slot in conjunction with fine-tuning the front L-shaped patch. The finalized antenna operates at 2.4 GHz with a 98% radiation efficiency and peak gains of 2.09 dBi (measured) and 1.95 dBi (simulated). The performance of the simulation and measurement are found to be in good agreement. Based on the performance that was achieved, the developed L-shaped antenna can be used in a variety of 2.4 GHz ISM bands and IoT application environments, especially for indoor localization estimation scenarios, such as smart offices and houses, and fourth-generation (4G) wireless communications applications due to its small size and high fractional bandwidth. International audience
HAL-Rennes 1; Mémoir... arrow_drop_down ElectronicsOther literature type . Article . 2023 . Peer-reviewedLicense: CC BYFull-Text: http://www.mdpi.com/2079-9292/12/9/2149/pdfadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3390/electronics12092149&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 1 citations 1 popularity Average influence Average impulse Average Powered by BIP!more_vert HAL-Rennes 1; Mémoir... arrow_drop_down ElectronicsOther literature type . Article . 2023 . Peer-reviewedLicense: CC BYFull-Text: http://www.mdpi.com/2079-9292/12/9/2149/pdfadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3390/electronics12092149&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object 2023 FrancePublisher:IEEE Zhao, Deng; Zhou, Zhangbing; Xue, Xiao; Diao, Jin; Yangui, Sami; Liu, Bo; Gaaloul, Walid;With the wide-adoption of edge computing, the functionalities of Internet of Things (IoT) devices can be encapsulated as edge services, to facilitate domain applications through edge service compositions. Considering the capacity-fluctuating and resource-varying of IoT devices, edge service monitoring is essential to guarantee the healthy of their compositions at runtime. Current techniques focus mostly on the monitoring of atomic edge services, which, however, are inadequate for that of inter-and composite services. Besides, constraints to be monitored are usually pre-specified, although certain parameters may have to be adapted online according to execution context. To address these challenges, this paper proposes a novel logic-based adaptive monitoring mechanism, to achieve the interpretation of temporal constraints and time-dependent QoS constraints upon intra-, inter-, and composite services. Leveraging our proposed Compositional Signal Temporal Logic (CSTL) with extended compositional modalities and online parameter settings, constraints can be converted to CSTL formulae, and QoS variations and temporal violations are interpreted qualitatively and quantitatively at runtime. Extensive experiments are conducted upon publicly-available datasets, and evaluation results demonstrate that our CSTL performs better than baseline techniques in terms of expressiveness, applicability, and robustness. International audience
https://doi.org/10.1... arrow_drop_down https://doi.org/10.1109/icws60...Conference object . 2023 . Peer-reviewedLicense: STM Policy #29Data sources: CrossrefHAL-Rennes 1; Mémoires en Sciences de l'Information et de la CommunicationConference object . 2023add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1109/icws60048.2023.00050&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert https://doi.org/10.1... arrow_drop_down https://doi.org/10.1109/icws60...Conference object . 2023 . Peer-reviewedLicense: STM Policy #29Data sources: CrossrefHAL-Rennes 1; Mémoires en Sciences de l'Information et de la CommunicationConference object . 2023add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1109/icws60048.2023.00050&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Doctoral thesis 2019 France EnglishPublisher:HAL CCSD Authors: Beaulaton, Delphine;Beaulaton, Delphine;LoT is a rapidly emerging paradigm that provides a way to the user to instrument and control a large variety of objects interacting between each other over the Internet. In IoT systems, the security risks are multiplied as they involve hetero- geneous devices that are connected to a shared network and that carry critical tasks, and hence, are targets for malicious users. In this thesis, we propose a security-based framework for modeling IoT systems where attack trees are defined alongside the model to detect and prevent security risks in the system. The language we implemented aims to model the IoT paradigm in a simple way. The IoT systems are composed of entities having some communication capabilities between each other. Two entities can communicate if (i) they are connected through a communication protocol and (ii) they satisfy some constraints imposed by the protocol. In order to identify and analyze attacks on the security of a system we use attack trees which are an intuitive and practical formal method to do so. A successful attack can be a rare event in the execution of a well-designed system. When rare, such attacks are hard to detect with usual model checking techniques. Hence, we use importance splitting as a statistical model checking technique for rare events. L’Internet des Objects (IoT) est un modèle qui évolue rapidement et qui permet à des utilisateursd’utiliser et contrôler une large variété d’objets connectés entre eux. Ces environnementsconnectés augmentent la surface d’attaque d’un système puisque les risques sont multipliés parle nombre d’appareils connectés. Ces appareils sont responsables de tâches plus ou moinscritiques, et peuvent donc être la cible d’utilisateurs malveillants. Dans ce travail de thèse nousprésentons une méthodologie pour évaluer la sécurité de systèmes IoT. Nous proposons unemanière de représenter les systèmes IoT, couplée avec des arbres d’attaques afin d’évaluer leschances de succès d’une attaque sur un système donné. La représentation des systèmes est faitevia un langage formel que nous avons développé : SOML (Security Oriented Modeling Language).Ce langage permet de définir le comportement des différents acteurs du système et d’ajouterdes probabilités sur leurs actions. L’abre d’attaque nous offre un moyen simple et formel dereprésenter de possibles attaques sur le système. L’analyse probabiliste est ensuite effectuée viaun outil de Statistical Model Checking : Plasma. Nous utilisons deux algorithmescomplémentaires pour effectuer cette analyse : Monte Carlo et importance splitting.
HAL-Rennes 1; INRIA ... arrow_drop_down HAL-Rennes 1; INRIA a CCSD electronic archive serverDoctoral thesis . 2019HAL-Rennes 1; Mémoires en Sciences de l'Information et de la CommunicationDoctoral thesis . 2019All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2755::394d4640e760a7736a40c87040c50f84&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert HAL-Rennes 1; INRIA ... arrow_drop_down HAL-Rennes 1; INRIA a CCSD electronic archive serverDoctoral thesis . 2019HAL-Rennes 1; Mémoires en Sciences de l'Information et de la CommunicationDoctoral thesis . 2019All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2755::394d4640e760a7736a40c87040c50f84&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Doctoral thesis 2018 France EnglishPublisher:HAL CCSD Authors: Mokh, Ali;Mokh, Ali;L'Internet des objets est l'un des concepts clefs stimulant l'évolution des réseaux mobiles dans le but de leur donner de nouvelles fonctionnalités de communication et de gestion d'objets dits connectés. Comparativement aux terminaux mobiles standards, les usages associés à ces objets connectés sont en général caractérisés par des débits modestes et de faibles ressources en capacité de calcul et en énergie. Les techniques de modulation spatiale (SM) sont proposées comme une solution prometteuse pour assurer les débits des objets connectés tout en maîtrisant le critère de la consommation énergétique. L'objectif de cette thèse est d'étudier les performances de différents schémas de transmission basés sur le concept SM mis en oeuvre en transmission ou en réception. Nous avons notamment proposé un système global de communication en liaisons montante (SM en transmission) et descendante (SM en réception) entre une station de base et un objet, dans lequel l'essentiel de la complexité de calcul est concentré à la station de base. Par ce système, une liaison avec un objet peut être établie en limitant les traitements au sein de l'objet à di simples fonctions d'activation/désactivation d'antenne et de détection à seuil. Par ailleurs, nous avons proposé des schémas SM étendus grâce auxquels l'efficacité spectrale atteignable devient égale au nombre d'antennes au sein de l'objet. Les expressions analytiques de la probabilité d'erreur binaire ont été développées pour l'ensemble des systèmes étudiés en utilisant différentes méthodes de détection. L'impact de la connaissance imparfaite de l'état des canaux de propagation ainsi que l'effet des corrélations entre antennes ont également été incorporés dans l'étude des performances des schémas SM de réception. Dans une dernière partie, nous avons proposé d'adapter les schémas SM de réception dans un environnement de propagation en ondes millimétriques en utilisant une formation de faisceau hybride analogique/numérique au niveau de l'émetteur. Internet of Things is one of the keyword that represents the evolution in 5G that is able to connect the so-called Connected Devices (CD) to the network. These CDs are expected to require modest data rates and will be characterized by low resources in terms of both computation and energy consumption compared to other mobile multi-media devices. Spatial Modulation (SM) is proposed to be a promising solution to boost the data rate of the CD with a small ( or no) increase in energy consumption. Inspired by the advantages of SM, the objective of this thesis is to study the performance of different transmission scheme based on the SM concept at the transmitter and at tht receiver, for respectively an uplink and a downlink transmission between a BS and a CD. We proposed a global system where the higher computational complexity remains at the BS: The transmit SM is used for uplink, and the receive SM for downlink. It is shown that with SM, an ONOFF keying for uplink and Single Tap detector for downlink could be sufficient for the transmission a the CD. Also, with Extended SM schemes, we increased the spectral efficiency of SM to be equal t< the number of antennas of CD in both uplink and downlink transmission. A framework for the derivation of the Bit Error Probability (BEP) is developed for all schemes with different detection methods. Impact of imperfect CSIT transmission has been studied when linear precoding is implemented for the receive spatial modulation, as well as the effect of antenna correlations. Finally we proposed to adapte the spatial modulation at the receiver with the mmWave environment, using hybrid beamformina at the transmitter.
All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=dedup_wf_002::cd562b40514361c847e2c98d7c7e8347&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=dedup_wf_002::cd562b40514361c847e2c98d7c7e8347&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object 2022 FrancePublisher:IEEE Authors: Molina Araque, Sebastian; Martinez, Ivan; Papadopoulos, Georgios; Montavont, Nicolas; +1 AuthorsMolina Araque, Sebastian; Martinez, Ivan; Papadopoulos, Georgios; Montavont, Nicolas; Toutain, Laurent;Nowadays, we are facing an era where the Internet of Things (IoT) is growing intensively and IoT devices are being deployed massively. At this point, interoperability with the information system is a major issue for the accelerated device deployment. Most of the time, IoT information is presented as Time Series (TS). However, no standardized representation format has emerged, while the majority of the studies in the literature focus on the compression, processing, or prediction of TS. In this paper, we propose a versatile format for TS representation based on the Concise Binary Object Representation (CBOR). This representation exploits CBOR to be compact thanks to the introduction of deltas to represent measurements, tags to represent variables, and templates to transform our TS representation into the data format required by information systems. Our preliminary results show that the data collected by IoT devices can be regrouped compactly. Indeed, for the cases evaluated we have proven that the total amount of data to be sent can be reduced between 76% and 96% when compared against JavaScript Object Notation (JSON). Finally, by lowering the amount of data transmitted while keeping the same amount of information delivered, our approach has the potential to extend the battery life of IoT devices and their useful life. International audience
HAL-Rennes 1; INRIA ... arrow_drop_down https://doi.org/10.1109/giis56...Conference object . 2022 . Peer-reviewedLicense: STM Policy #29Data sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1109/giis56506.2022.9936910&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert HAL-Rennes 1; INRIA ... arrow_drop_down https://doi.org/10.1109/giis56...Conference object . 2022 . Peer-reviewedLicense: STM Policy #29Data sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1109/giis56506.2022.9936910&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object 2017 France EnglishPublisher:HAL CCSD Authors: Kersalé, Maurine; Papadopoulos, Georgios; Fiore, Julián, M Del; Thubert, Pascal; +1 AuthorsKersalé, Maurine; Papadopoulos, Georgios; Fiore, Julián, M Del; Thubert, Pascal; Montavont, Nicolas;La volonté d'utiliser l'Internet des Objets dans le secteur de l'industrie offre de nouvelles perspectives pour développer des technologies standardsàstandards`standardsà bas cout, mais exigé egalement des extensions et adaptationsàadaptations`adaptationsà ces nouveaux applicatifs. Les standards actuels reposent sur des systèmes de détection d'erreur et de retransmissions qui engendrent des latences et des comportements imprévisibles du système. Ce papier présente un algorithme appelé Collaboration Leapfrog quíquí etend les fonctionnalités de routage offertes par le protocole RPL dans un réseau multi-sauts. Leapfrog s'appuie sur la diversité spatiale du medium pour créer des cheminsparalì eles permettant ainsi d'anticiper leséventuellesles´leséventuelles pertes de paquets. A travers une implémentation dans le simulateur Cooja, nous montrons que notre extension permet de mieux maitriser la gigue des paquets de données pour la traversée du réseau. International audience
HAL-Rennes 1 arrow_drop_down HAL-Rennes 1Conference object . 2017Full-Text: https://hal.science/hal-01519185/documentData sources: HAL-Rennes 1All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2592::833803b9d913852e1015c7b22b67d948&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert HAL-Rennes 1 arrow_drop_down HAL-Rennes 1Conference object . 2017Full-Text: https://hal.science/hal-01519185/documentData sources: HAL-Rennes 1All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2592::833803b9d913852e1015c7b22b67d948&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object 2019 France EnglishPublisher:HAL CCSD Funded by:EC | ACHIEVEEC| ACHIEVEAuthors: Carballo-Hernández, W.; Berry, F.; Pelcat, Maxime; Arias-Estrada, M.;Carballo-Hernández, W.; Berry, F.; Pelcat, Maxime; Arias-Estrada, M.;The success of Deep Learning (DL) algorithms in computer vision tasks have created an ongoing demand of dedicated hardware architectures that could keep up with the their required computation and memory complexities. This task is particularly challenging when embedded smart camera platforms have constrained resources such as power consumption, Processing Element (PE) and communication. This article describes a heterogeneous system embedding an FPGA and a GPU for executing CNN inference for computer vision applications. The built system addresses some challenges of embedded CNN such as task and data partitioning, and workload balancing. The selected heterogeneous platform embeds an Nvidia® Jetson TX2 for the CPU-GPU side and an Intel Altera® Cyclone10GX for the FPGA side interconnected by PCIe Gen2 with a MIPI-CSI camera for prototyping. This test environment will be used as a support for future work on a methodology for optimized model partitioning. International audience
HAL Clermont Univers... arrow_drop_down HAL Clermont Université; HAL-Rennes 1; Mémoires en Sciences de l'Information et de la CommunicationConference object . 2019All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od_______212::45fa60556983d1ae9817d5ef19378ce0&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert HAL Clermont Univers... arrow_drop_down HAL Clermont Université; HAL-Rennes 1; Mémoires en Sciences de l'Information et de la CommunicationConference object . 2019All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od_______212::45fa60556983d1ae9817d5ef19378ce0&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object 2018 France EnglishPublisher:HAL CCSD Mroue, Hussein; Abbass, Nasser; Parrein, Benoît; Hamrioui, Sofiane; Motta-Cruz, Eduardo; Rouyer, Gilles;In this paper, the performance of Long Range(LoRa) Internet of Things (IoT) technology is investigated. Byconsidering Chirp Spread Spectrum (CSS) technique of LoRa,an approximation of the Bit Error Rate (BER) is presented andevaluated through intensive simulations. Unlike previous workswhich present the BER of LoRa in terms of the ratio of energyber bit to noise ratio only without any proofing, our presentedwork expresses BER in terms of LoRa’s modulation patterns suchas the spreading factor, the code rate, the symbol frequency andthe SNR. Numerical results are carried out in order to investigatethe LoRa performance and to illustrate the accuracy of the newBER expression. International audience
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2592::83197fd8e0d4d7e57ba423ada66334ab&type=result"></script>'); --> </script>
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