Romain Jacob

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In cyber-physical systems (CPS), the communication among the sensing, actuating, and computing elements is often subject to hard real-time constraints. Real-time communication among wireless network interfaces and real-time scheduling for complex, dynamic applications have been intensively studied. Despite these major efforts, there is still a significant(More)
Over the last decade, opacity of discrete event systems (DES) has become a very fertile field of research. Driven by safety and privacy concerns in network communications and online services, much theoretical work has been conducted in order to design opaque systems. A system is opaque if an external observer in unable to infer a ”secret” about the system(More)
Over the last decade, opacity of discrete event systems (DES) has become a very fertile field of research. Driven by<lb>safety and privacy concerns in network communications and online services, much theoretical work has been conducted<lb>in order to design opaque systems. A system is opaque if an external observer in unable to infer a ”secret” about(More)
One big challenge to be overcome before the successful deployment of wireless cyber-physical systems is to provide hard real-time guarantees, not only within the wireless network, but in fact between end-to-end application processes. To achieve this, we design a distributed real-time protocol (DRP) that considers the complete transmission chain, including(More)
Flooding-based communication with protocols such as Glossy is being used increasingly in low-power wireless communication for multi-hop networks because of its efficiency and reliability. For example, Glossy can achieve packet reception rates above 99.99% in real-life tests. However, faults like interference can still occur, causing a packet to get lost,(More)
If visions and forecasts of industry come true then we will be soon surrounded by billions of interconnected embedded devices. We will interact with them in a cyber-human symbiosis, they will not only observe us but also our environment, and they will be part of many visible and ubiquitous objects around us. The information that is collectively gathered and(More)
This paper introduces Stalwart, a novel system design for wireless Cyber-Physical Systems (CPS) including a scheduling framework that provides real-time guarantees, minimizes end-to-end latency between application tasks, minimizes communication energy, and ensures safety in terms of con ict-free communication.
The main purpose of this paper is to present a new path planning framework, called <i>directPath</i>, aimed to handle a priori environment knowledge efficiently. Our algorithm is an expert system designed to specifically exploit that knowledge, and then eventually collaborate with other frameworks in order to improve overall path planning performances. It(More)
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