Emmanuel Conchon

KauNet: improving reproducibility for wireless and mobile research

This paper presents the KauNet emulation system that provides pattern-based emulation. KauNet enables bit precise placement of bit-errors, exact and repeatable packet losses, delays and bandwidth variations. The design and performance of KauNet is discussed. An example is also provided of how it can be integrated in a specific emulation framework to enhance emulation for mobile and wireless systems.

Improved IP-Level Emulation for Mobile and Wireless Systems

More and more applications and protocols are now running on wireless networks. Testing such applications and protocols is a real challenge as the position of the mobile terminals and environmental effects strongly affect the overall performance. Network emulation is often perceived as a good trade-off between experiments on operational wireless networks and discrete-event simulations on Opnet or ns-2. However, ensuring repeatability and realism in network emulation while taking into account mobility in a wireless environment is very difficult. This paper proposes a network emulation architecture based on off-line computations preceding online pattern-based traffic shaping. The underlying concepts of repeatability, dynamicity and accuracy are defined in the emulation context. Three different simple case studies illustrate the validity of our approach with respect to these concepts.

Engineering IoT Healthcare Applications: Towards a Semantic Data Driven Sustainable Architecture

As the number of developed sensors is growing, new Internet of Things applications are being developed. Healthcare applications offer a perfect domain for Internet of Things since they respond to the challenge of the ageing population while offering safe and quality care in the home. We present in this paper a new Internet Of Things architecture for IoT healthcare applications. The architecture focuses mainly on the principles of weak coupling and of semantic data exchange. We present a software architecture based on a message oriented middleware driven by semantic OWL messages.

A sustainable software architecture for home care monitoring applications

The Ageing of population is a major concern for Western societies and leads to the development of new solutions to improve home care for elders, in order to delay their admission in specialized institutions (retirement house, healthcare facility and so on). These new solutions can be hardware or software based, and most often rely on home automation (e.g. motion sensors, temperature, light...). These sensors are used to monitor elderly or disabled people in order to detect their activities and the potential accidents that may occur. In this paper, we present a software architecture based on interoperable components for home care solutions. This architecture considers two kinds of components: the data providers, for instance a motion sensor, and the data consumers that process sensor data in order to infer higher level information such as a fall detector. The overall architecture is loosely coupled by design, in order to ease the addition of new sensors and of new functionalities.

W-NINE: a two-stage emulation platform for mobile and wireless systems

AbstractssMore and more applications and protocols are now running on wireless networks. Testing the implementation of such applications and protocols is a real challenge as the position of the mobile terminals and environmental effects strongly affect the overall performance. Network emulation is often perceived as a good trade-off between experiments on operational wireless networks and discrete-event simulations on Opnet or ns-2. However, ensuring repeatability and realism in network emulation while taking into account mobility in a wireless environment is very difficult. This paper proposes a network emulation platform, called W-NINE, based on off-line computations preceding online pattern-based traffic shaping. The underlying concepts of repeatability, dynamicity, accuracy, and realism are defined in the emulation context. Two different simple case studies illustrate the validity of our approach with respect to these concepts.

A Semantic Web-of-Things Architecture for Monitoring the Risk of Bedsores

Bedsores are a common injury that mainly plagues elders and frail persons, and are a major cause of concerns in medical institutions. We present a system based on the Internet-of-Things technologies, aiming at detecting the risk of bedsores using sensor fusion. This paper mainly focuses on the software architecture of the proposed system, based on the principles of weak coupling and of semantic data exchange. We present a model of the application in terms of the Semantic Sensor Network (SSN) ontology.

A Flexible Architecture for Cognitive Sensing of Activities in Ambient Assisted Living

We discuss our experience with the design, implementation, deployment and evaluation of a Human Activity Detection application. This application relies on a software architecture for IoT-based monitoring in Ambient Assisted Living (AAL), based on a Semantic Message Oriented Middleware (SeMoM). Going beyond traditional sensor management systems, our architecture addresses the heterogeneity challenge in IoT healthcare systems and ensures semantic and technical interoperability. SeMoM is able to handle the data acquisition process for a variety of heterogeneous devices, and to provide a reasoning mechanism based on expert knowledge and logic through cognitive sensors. Sensor data and observations are annotated using an extended version of the Cognitive Semantic Sensor Network (CoSSN) ontology built on top of the Semantic Sensor Network (SSN) ontology. CoSSN provides a formal representation that supports a semantic detection of activities.

An Improvement of NFC-SEC with Signed Exchanges for an e-Prescription-Based Application

In the context of an aging population, drug intake can be a potential source of errors leading to death in some cases. Almost all of these errors are unintentional and come from incorrect prescriptions, unsuitable dosages for the patient or incompatibility with other treatments. To limit these risks which are especially important in the elderly or pre-dependency, we propose a secure system for drug treatment through the NFC (Near Field Communication) contact-less communication technology. The proposed system provides security mechanisms such as integrity, authentication, encryption and non-repudiation. To ensure this security, an extension of the international standard ISO/IED 13157 (NFC-SEC) is proposed to handle electronic signature based on a public key infrastructure.

Increasing the determinism of network emulation to evaluate communication protocols

In this paper, we propose an emulation solution whose purpose is to deal with the need of reproducibility that is encountered in communication protocols evaluation and transport protocols in particular.

A Card-less TEE-based Solution for Trusted Access Control.

In this paper, we present a new card-less access control system aiming to replace existing systems based on vulnerable contact-less cards. These existing systems have many vulnerabilities which makes them not secure enough to be deployed to protect restricted areas. We propose to deploy a new access control architecture based on the use of a smartphone to remove the physical card. Our secure access control system is based on Trusted Execution Environment (TEE) in the cloud and Identity Based Encryption (IBE) mechanisms. The authentication protocol deployed on our architecture is based on IBAKE. Finally, a performance evaluation of the protocol is provided.