Isakovic Haris , Alexander Fasching , Lukas Punzenberger, Radu Grosu Building large-scale IoT applications requires enormous infrastructural support. As infrastructure we understand hardware, software and communication channels necessary to ensure interconnection between various heterogeneous components. Project CPS/IoT Ecosystems explores infrastructural requirements for large-scale applications. The applications are realworld scenarios such as smart parking, smart agriculture or smart buildings. In this paper we explore infrastructural requirements necessary to build modular indoor vertical farming system. The proposed prototype is a service-oriented platform distributed over three scopes of operation: cloud, fog, sensor/actuator. Paper2019 IEEE 23rd International Symposium on Consumer Technologies (ISCT)
Isakovic Haris, Vanja Bisanovic, Bernhard Wally, Thomas Rausch, Denise Ratasich, Schahram Dustdar, Gerti Kappel, Radu Grosu IoT systems are more and more becoming part of civil and industrial infrastructure. With the growth of these IoT ecosystems, their complexity is increasing exponentially. This paper reflects on issues with respect to scalability in these systems. A simulation framework is proposed, that is capable of generating big data, to evaluate scalability of IoT infrastructures and correspondent applications. It is a cloud based Infrastructure as-a-Service (IaaS) system that enables users to test both functionality and scalability of their IoT applications. IEEE/IES IECON 2019, September 2019, Lisbon. PT
Thomas Rausch, Philipp Raith, Padmanabhan Pillai, Scharam Dustar This work was presented at the 4th ACM/IEEE Symposium on Edge Computing and was awarded with best demo award. Congrats to the team led by Thomas Rausch. We present an end-to-end system for operating energy-aware cloudlets with a low-footprint cluster manager and an adaptive client-side load balancing approach. Our system is designed for small-scale high-density compute clusters that host stateless services and have stringent energy resource constraints. It features cluster and service management, runtime monitoring, adaptive load balancing and cluster reconfiguration policies. Furthermore, we present an experimentation and analytics system that allows coordinated execution of complex workload experiments to evaluate different operational strategies. Paper Download , Poster Download
The Internet of Things (IoT) is an ubiquitous system connecting many different devices -- the things -- which can be accessed from the distance. With the possibility to monitor and control the physical environment from the distance, that is the IoT contains cyber-physical systems (CPS), the two concepts of dependability and security get deeply intertwined. The increasing level of dynamicity, heterogeneity, and complexity adds to the system's vulnerability, and challenges its ability to react to faults. This paper summarizes state-of-the-art of existing surveys on anomaly detection, fault-tolerance and self-healing and adds a number of other methods applicable to achieve resilience in an IoT. We particularly focus on non-intrusive methods ensuring data integrity in the network. Furthermore, this paper presents the main challenges to build a resilient IoT for CPS. It…
In this paper we explain basic idea behind CPS/IoT Ecosystem its effects on research and education. The CPS/IoT Ecosystem project aims to build an IoT infrastructure that will be used as a platform for research and education in multiple disciplines related to CPS and IoT. The main objective is to provide a real-world infrastructure, and allow students and researchers explore its capabilities on actual use cases. Presented: Workshop on Embedded and Cyber-Physical Systems Education (WESE 2018), Embedded Systems Week 2018, Turin, Italy Paper Presentation: Presentation
Publish–subscribe middleware is a popular technology for facilitating device-to-device communicationin large-scale distributed Internet of Things (IoT) scenarios. However, the stringent quality of service (QoS) requirements imposed by many applications cannot be met by cloud-based solutions alone. Edge computing is considered a key enabler for such applications. Client mobility and dynamic resource availability are prominent challenges in edge computing architectures. In this paper, we present EMMA, an edge-enabled publish–subscribe middleware that addresses these challenges. EMMA continuously monitors network QoS and orchestrates a network of MQTT protocol brokers. It transparently migrates MQTT clients to brokers in close proximity to optimize QoS. Experiments in a real-world testbed show that EMMA can significantly reduce end-to-end latencies that incur from network link usage, even in the face of client mobility and unpredictable resource availability. Presented:…
Prof. Radu Grosu is holding a keynote talk on active projects of the CPS group during the final review conference of the EMC2 project. It is a major event in the EU project community as it is a final event of the largest project in the ECSEL JU. One of the topics covered in the presentation is CPS/IoT Ecosystem project as a leading initiative on CPS and IoT infrastructure in Austria.