Alexander Willner

Alexander Willner
Technische Universität Berlin | TUB · Chair Next Generation Networks

Doctor of Engineering

About

115
Publications
18,615
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Introduction
Dr.-Ing. Alexander Willner is the head of the Industrial Internet of Things (IIoT) Center at the Fraunhofer Institute for Open Communication Systems (FOKUS) and the head of the IIoT research group within the chair of Next Generation Networks (AV) at the Technical University Berlin (TUB). In joint collaboration with the Berlin Center of Digital Transformation (LZDV) he is working with his groups in applying standard-based Internet of Things (IoT) technologies to industrial domains. With a focus on moving towards the realization of interoperable communication within the Industry 4.0, the most important research areas include industrial real-time networks (TSN), middleware systems (OPC UA), distributed AI (Digital Twins) and distributed Cloud Computing (Edge Computing).

Publications

Publications (115)
Chapter
Semantische Interoperabilität gilt als einer der Schlüssel zur Umsetzung der Ideen hinter dem Paradigma des „Industrial Internet of Things“ (IIoT). Um heterogene Systeme über Anwendungsdomänen hinweg interoperabel kommunizieren lassen zu können, wird zunächst eine präzise Definition des Begriffs „Semantik“ benötigt. Denn nur auf einer formalen Basi...
Conference Paper
With the increase of the volume of data produced by IoT devices, there is a growing demand of applications capable of elaborating data anywhere along the IoT-to-Cloud path (Edge/Fog). In industrial environments, strict real-time constraints require computation to run as close to the data origin as possible (e.g., IoT Gateway or Edge nodes), whilst...
Conference Paper
Uncertainty assignment for measurement values is a common process for single sensors, but this procedure grows in complexity for sensor networks. Often measured values are processed further in such networks and uncertainty must be evaluated for virtual values. A simple example is the fusion of homogeneous values and faulty or drifting sensors can h...
Chapter
In unserer Fachdisziplin bezeichnen wir komplexe technische Systeme als resilient, wenn sie auch beim Auftreten innerer und äußerer Ausfälle und Störungen die angeforderten Systemleistungen aufrechterhalten. Hier sind alle Ingenieurdisziplinen und insbesondere die Automation gefragt, denn eines ist offensichtlich: Die Herausforderungen können wir n...
Article
Full-text available
In the context of the digital transformation of the industry, whole value chains get connected across various application domains as long as economic, ecological, or social benefits arise to do so. Under the umbrella of the Industrial Internet of Things (IIoT), traditional operational technology (OT) approaches are replaced or at least augmented by...
Conference Paper
Full-text available
Several use cases from the areas of manufacturing and process industry, require highly accurate sensor data. As sensors always have some degree of uncertainty, methods are needed to increase their reliability. The common approach is to regularly calibrate the devices to enable traceability according to national standards and Système International (...
Preprint
Several use cases from the areas of manufacturing and process industry, require highly accurate sensor data. As sensors always have some degree of uncertainty, methods are needed to increase their reliability. The common approach is to regularly calibrate the devices to enable traceability according to national standards and Syst\`eme international...
Preprint
Full-text available
In the context of the digital transformation of the industry, whole value chains get connected across various application domains; as long as economic, ecologic, or social benefits arise to do so. Under the umbrella of the Industrial Internet of Things (IIoT), traditional Operational Technology (OT) approaches are replaced or at least augmented by...
Preprint
Full-text available
Edge Computing is a new distributed Cloud Computing paradigm in which computing and storage capabilities are pushed to the topological edge of a network. However, various standards and implementations are promoted by different initiatives. Lead by a reference architecture model for Edge Computing, current initiatives are analyzed by explorative con...
Technical Report
Full-text available
Link zur Studie: http://s.fhg.de/studieweisseflecken Die Energieversorgung wird in Zukunft im Zuge der Energiewende deutlich dezentraler, kleinteiliger, flexibler und digitaler erfolgen. Eine flächendeckende und branchenübergreifende digitale Vernetzung ist dabei entscheidend. Die Studie »Weiße Flecken in der digitalen Vernetzung der Energiewirtsc...
Conference Paper
Full-text available
Verwaltungsschalen bilden zusammen mit den Assets der digitalen Fabrik I4.0-Komponenten. Die Interaktionen zwischen den Verwaltungsschalen der Industrie 4.0-Komponenten bilden das I4.0-System zur Umsetzung der Wertschöpfungsketten. In mehreren I4.0-Szenarien sind Verhandlungen oder Einigungsprozesse über technische Machbarkeit, organisatorische ode...
Conference Paper
Full-text available
Verwaltungsschalen bilden zusammen mit den Assets der digitalen Fabrik I4.0-Komponenten. Die Interaktionen zwischen den Verwaltungsschalen der Industrie 4.0-Komponenten bilden das I4.0-System zur Umsetzung der Wertschöpfungsketten. In mehre-ren I4.0-Szenarien sind Verhandlungen oder Einigungsprozesse über technische Machbar-keit, organisatorische o...
Chapter
Full-text available
The Industrial Internet of Things (IIoT) is the application of emerging Internet of Things (IoT) technologies within industrial domains to further enhance productivity. This worldwide paradigm shift, the digital transformation, can be observed across the entire value chain and spans multiple verticals, such as energy, health care, manufacturing, sm...
Technical Report
Full-text available
Industrie 4.0 verspricht eine neue Stufe der Organisation und der Steuerung von Wertschöpfungsketten. Durch die Vernetzung zu einem Internet der Dinge mit Hilfe von Daten und Diensten sowie einer umfassenden Kooperation von Komponenten eines Industrie 4.0-Systems entstehen dynamische, selbstorganisierende, selbstoptimierende und unternehmensübergre...
Chapter
Inhalt (Auszüge…) Fertigungsautomation – Plant Lifecycle Management Multidimensionale Datenmodellierung und Analyse zur Qualitätssicherung in der Fertigungsautomatisierung . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 B. Lindemann, N. Jazdi, M. Weyrich, Institut für Automatisierungstechnik und Softwar...
Chapter
Full-text available
The Internet as we know it today is a critical infrastructure composed by communication services and end-user applications transforming all aspects of our lives. Recent advances in technology and the inexorable shift towards everything connected are creating a data-driven society where productivity, knowledge, and experience are dependent on increa...
Article
Full-text available
Since the invention of the steam engine in the 18th century, innovation drove the development of industrial processes. The next industrial revolution will form an ecosystem of over 20 billion connected devices with unforeseeable influence to the gross domestic product by 2020, and connected assets will generate about 44ZB of data, which pose intere...
Chapter
Kurzfassung Die vorausschauende Instandhaltung (engl. Predictive Maintenance) gewinnt für die produzierende Industrie weltweit an Bedeutung, da Produktionsmodernisierungen im Rahmen der Industrie 4.0 sowie die zunehmende Verwendung von heterogenen Sensoreinheiten die Instandhaltungsplanung immer komplexer gestalten. Darüber hinaus ist das ServiceKo...
Poster
Full-text available
Research around Future Internet technologies such as Internet of Thing (IoT), Network Functions Virtualization (NFV), and Software Defined Networking (SDN) is constantly growing, and more tools are required to verify novel concepts. In this paper, we introduce our view and experiences on building Future Internet (FI) testbeds based on open source s...
Conference Paper
Full-text available
Research around Future Internet technologies such as Internet of Thing (IoT), Network Function Virtualization (NFV), Software Defined Networking (SDN) is constantly growing and related tools are required to test novel concepts. In this paper, we introduce our view on building a Future Internet (FI) testbeds based on existing open source solutions....
Thesis
Sharing and granting access to geographically dispersed resources is the underlying concept in the field of Distributed Computing. Associated with this, considerable efforts have been spent on architectures to manage heterogeneous resources across multiple administrative domains. Such an environment is referred to as a resource federation. A specif...
Article
Mobile Network Operators provide wireless communication services to their customers using their own network infrastructures. For providers, in particular in low income countries, access to latest network functions to offer 4G/5G services can be a large burden as this is directly impacted by financial restrictions of operators. Although some network...
Conference Paper
In the contemporary cloud computing environment, the various cloud providers adopt different architectures for their systems and usually these are not compatible. The scalable exchange of information about these heterogeneous resources is often not addressed; still this represents an interesting challenge, since different Cloud systems and vendors...
Conference Paper
Full-text available
The Cloud Computing paradigm has been adopted in countless areas of application and forms the basis of a growing number of business cases. Similar to the situation with service providers in the 1980th, it becomes apparent that different Cloud providers build walled gardens around their offerings. While multiple projects and organizations are workin...
Article
Considerable efforts have been spent on designing architectures to manage heterogeneous resources across multiple administrative domains. Specific felds of application are federated cloud computing (Intercloud) approaches and distributed testbeds, among others. An important interoperability challenge that arises in this context is the exchange of i...
Conference Paper
The Internet remains an unfinished work. There are several approaches to enhancing it that have been experimentally validated within federated testbed environments. To best gain scientific knowledge from these studies, reproducibility and automation are needed in all areas of the experiment life cycle. Within the GENI and FIRE context, several arch...
Article
Internet is broken and there are several approaches to fix it. In order to validate the different attempts, they need to be evaluated within large-scale environments involving numerous heterogeneous resources. As a result, several testbeds have been established along with a number of competitive mechanisms to federate them. Since most of these prot...
Conference Paper
Full-text available
Urbanisation trends in both developed and developing countries continue to grow significantly. This presents an opportunity for developing countries to increase future economic growth if they invest in the development of Smart Cities. One aspect of the realisation of Smart Cities revolves around the concept of using information and communication te...
Conference Paper
Worldwide a large number of Future Internet and Smart City infrastructures exist. To provide a global view on these infrastructures in Europe, the Infinity Project has developed an on-line catalog called the XiPi portal. Its main objective is to facilitate the construction of a sustainable market for infrastructure providers to advertise their capa...
Conference Paper
The global trend of Future Internet related experimentally driven research has gained a strong momentum. In this context sustainability and the best use of developed infrastructures are highly critical. While many facilities have reached a level of maturity that allows them to be opened up to a wider use, mainly the academic sectors have been targe...
Conference Paper
Full-text available
With a large majority of the world’s population moving towards living in urban environments in the foreseeable future, the notion of Smart Cities is emerging globally as an important research topic. A particular challenge is the unstable power supply of cities in underdeveloped countries, thus creating a need for smart energy management systems. By...
Conference Paper
Full-text available
Internet systems are currently too complex to be entirely designed in advance and therefore must be thoroughly evaluated in realistic environments. Experimentally driven research is at the heart of Future Internet Research and Experiment (FIRE) facilities, which target various experimenter profiles, ranging from core Internet communities and sensor...
Technical Report
Full-text available
FP7 Fed4Fire project deliverable D5.1
Chapter
During the last years, a trend has emerged at universities, large enterprises, government institutions, hospitals and public institutions towards acquiring and deploying their own dark-fibre or wavelength networks as opposed to purchasing bandwidth network services from the traditional operators. These institutions usually follow the condominium mo...
Article
Purpose The NSI main objective is to provide a unified communication method enabling independent single domain resource management tools to collaborate at global scale providing multi-domain services in heterogeneous environments. Approach The NSI research was driven by specialists experienced in dynamic provisioning system and resources allocation...
Technical Report
Full-text available
This document describes different experiment control frameworks currently under de- velopment on the context of the OpenLab project, and provides a global view of the interactions with other OpenLab components. It presents two experiment use cases that will be conducted as part of OpenLab to evaluate the feasibility and the usefulness of the tools...
Conference Paper
Full-text available
Grid computing aims at offering standardized access to heterogeneous and distributed resources for scientific communities. However, in order to support emerging next generation Grid applications with specific Quality of Service requirements, the interconnecting networks have also been considered as first-class allocable Grid resources and have been...