Fault-tolerant and QoS based Network Layer for Security Management

Wireless sensor networks have profound effects on many application fields like security management which need an immediate, fast and energy efficient route. In this paper, we define a fault-tolerant and QoS based network layer for security management of chemical products warehouse which can be classified as real-time and mission critical application. This application generate routine data packets and alert packets caused by unusual events which need a high reliability, short end to end delay and low packet loss rate constraints. After each node compute his hop count and build his neighbors table in the initialization phase, packets can be routed to the sink. We use FELGossiping protocol for routine data packets and node-disjoint multipath routing protocol for alert packets. Furthermore, we utilize the information gathering phase of FELGossiping to update the neighbors table and detect the failed nodes, and we adapt the network topology changes by rerun the initialization phase when chemical units were added or removed from the warehouse. Analysis shows that the network layer is energy efficient and can meet the QoS constraints of unusual events packets

Gestion de l'information embarquée dans des matériaux communicants à l'aide de protocoles de réseaux de capteurs sans fil

A new Internet of Things area is coming with communicating materials, which are able to provide diverse functionalities to users all along the product lifecycle. As example, it can track its own evolution which leads to gather helpful information. This new paradigm is fulfilled via the integration of specific electronic components into the product material. In this thesis, ultra-small wireless sensor nodes are used for concrete precast field. Indeed, storage of lifecycle information and data dissemination in communicating materials are very important issues. Therefore, this thesis provides a new protocol (USEE) for storing data by a systematic dissemination through the integrated sensor nodes. It guarantees that information could be retrieved in each piece of the concrete by intelligently managing data replication among each neighborhood of the sensor network. The protocol considers in the same set uniformity storage in the whole network, the data importance level, and the resource constraints of sensor nodes. Then, another new data retrieval protocol (RaWPG) is developed to extract the stored information. Castalia/OMNeT++ simulator is used to evaluate the performances of the proposed protocols.La thèse aborde le problème de la dissémination des informations liées au produit tout au long de son cycle de vie, par l?exploitation du concept de matière communicante. L?objectif général est de stocker dans la matière communicante ses caractéristiques initiales mais aussi l?évolution de ses propriétés durant son usage, en évitant de les perdre lors par exemple d?une transformation ou d?une destruction d?une partie du matériau. Dans le cadre de cette thèse, ce principe est appliqué dans le domaine des préfabriqués en béton, où des n?uds de réseaux de capteurs sans fil sont intégrés dans le béton. Ces n?uds sont alors utilisés pour stocker des informations relatives au cycle de vie du préfabriqué et à sa surveillance sur la phase d?usage. Un nouveau protocole de communication, nommé USEE, a été proposé et permet de diffuser uniformément les informations dans la matière en considérant qu?elles n?ont pas toutes la même importance. Le protocole USEE évite notamment la saturation rapide des mémoires des n?uds de façon à pouvoir stocker un maximum d?informations différentes. Ensuite, un protocole de lecture, intitulé RaWPG, a été développé. Il est adapté à la récupération d?informations uniformément réparties et consomme peu d?énergie. Ces deux protocoles ont été implémentés dans le simulateur réseau Castalia/OMNeT++ et ont permis de montrer leur intérêt par rapport au contexte applicatif mais aussi par rapport à d?autres protocoles similaires de la littérature

Indoor positioning system for IoT device based on BLE technology and MQTT protocol

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Experimental study of embedded and energy efficient BLE positioning system for mobile IoT devices

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In-network data storage protocols for wireless sensor networks: A state-of-the-art survey

International audienceIn wireless sensor networks, the aim of storage protocols is to efficiently replicate data across nodes and to improvedata collection and querying by sinks. Among them, in-network storage protocols replicate data in a set of nodes thatdepends on some characteristics such as network topology and geographic location. Researchers have proposed varioustechniques to implement in-network storage. In this article, we summarize and highlight the key ideas of existing proto-cols which are further classified into three categories (reactive, unstructured proactive, and structured proactive) basedon topology, load balancing, transmission strategy, and reliability. Benefits and drawbacks of each protocol are studiedand compared with different requirements. Finally, future research directions are provided for efficient in-network stor-age in wireless sensor network

Concept and hardware considerations for product-service system achievement in Internet of things

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