Kolloquiumsvortrag: 28. Januar 2020, Prof. Dr.-Ing. Udo R. Krieger, Professur für Informatik – insbesondere Kommunikationsdienste, Telekommunikationssysteme und Rechnernetze, Univ. Bamberg
Integration of Fog Computing and Blockchain Technology: Concepts, Prototypes, and Performance Modeling
Considering rapidly evolving Internet-of-Things services such as smart buildings, smart homes or secure e-health applications, the fog computing concept provides a technical basis for innovative application scenarios of the blockchain technology.
First we present an overview on some concepts to integrate fog computing and blockchain technology. Then we illustrate such an approach by an enhancement of the fog computing architecture HCL-BaFog that may be used to collect and securely share sensor data. The latter may arise from private IoT applications such as ambient assisted living which incorporate the need of an immutable, local storage and a sharing of protected real-time sensor data monitored at patients‘ or people’s homes. Our proof-of-concept employs the fully virtualized functionality of a permissioned blockchain and a network of fog computing nodes. It utilizes the container orchestration and management system Docker and the MultiChain framework.
Finally, we discuss some initial performance modeling of the basic dissemination and commitment processes of blocks among the mining fog nodes in the underlying peer-to-peer network.of the employed permissioned blockchain. We propose a Markovian non-purging (n,k)-fork-join queueing model to analyze the delay metric of the synchronization process among these miner nodes that apply a vote-based consensus procedure.
An outlook on the evolution and efficient integration of fog computing and blockchain technology and the performance analysis of related systems concludes the presentation.
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Zeit: 10:15 Uhr