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Julius Rückert

Julius Rückert
ABB | ABB · Corporate Research

Dr.-Ing.

About

49
Publications
11,955
Reads
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518
Citations
Citations since 2016
19 Research Items
390 Citations
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Introduction
Julius Rückert was a research assistant and postdoc at the Department of Electrical Engineering and Information Technology of the Technische Universität Darmstadt between October 2011 and January 2017. He holds a master degree in computer science. He worked as researcher in the collaborative research centre “MAKI – Multi-Mechanism Adaptation for the Future Internet”. His research focused on overlay video streaming, Software-Defined Networking, and cross-layer mechanisms combining both worlds.

Publications

Publications (49)
Conference Paper
Composite asset or systems engineering requires integration and verification of the constituent asset models at the system level. It requires integrating relevant asset data and dynamical models of the individual assets which may be developed using diverse design and simulation tools by multiple vendors. Key integration challenges of lack of intero...
Article
Verfahrenstechniker entwerfen industrielle Prozessanlagen mithilfe von Rohrleitungs- und Instrumentierungsdiagrammen (R&I). Heute analysieren Datenanalysten, welche Anlagenstörungen auf Basis historischer Signaltrends diagnostizieren, diese komplexen Diagramme meist manuell auf Papier, was zeitaufwändig und fehleranfällig ist. In den letzten 15 Jah...
Chapter
Industrial control systems (e.g. programmable logic controllers, PLC or distributed control systems, DCS) cyclically execute control algorithms to automated production processes. Nowadays, for many applications their deployment is moving from dedicated embedded controllers into more flexible container environments, thus becoming “Virtual PLCs”. It...
Chapter
Industrial plant topology models can potentially automate many automation engineering tasks that are today carried out manually. Information on plant topologies is today mostly available in informal CAD drawings, but not formal models that transformations could easily process. The upcoming DEXPI/ISO15926 standard may enable turning CAD drawings int...
Chapter
Many enterprise IoT application scenarios, such as connected cars, smart cities, and cloud-connected industrial plants require distributed MQTT brokers to achieve high scalability and availability. With a market of over 20 MQTT brokers, it is hard for software architects to make a good selection. Existing MQTT comparisons often include only non-dis...
Article
Distributed control systems are currently evolving towards industrial Internet of Things (IoT) systems communicating fully using Internet protocols. This creates opportunities for streamlining costly commissioning processes, which today require substantial manual work for installing, configuring, and integrating thousands of actuators and sensors....
Conference Paper
Full-text available
The concepts of decision forces and the decision forces viewpoint were proposed to help software architects to make architectural decisions more transparent and the documentation of their rationales more explicit. However, practical experience reports and guidelines on how to use the viewpoint in typical industrial project setups are not available....
Conference Paper
Full-text available
Industrial control systems are complex, software-intensive systems that manage mission-critical production processes. Commissioning such systems requires installing, configuring , and integrating thousands of sensors, actuators, and controllers and is still a largely manual and costly process. Therefore, practitioners and researchers have been work...
Conference Paper
Full-text available
The OPC UA communication architecture is currently becoming an integral part of industrial automation systems, which control complex production processes, such as electric power generation or paper production. With a recently released extension for pub/sub communication, OPC UA can now also support fast cyclic control applications, but the bottlene...
Preprint
Full-text available
Due to missing IP multicast support on an Internet scale, over-the-top media streams are delivered with the help of overlays as used by content delivery networks and their peer-to-peer (P2P) extensions. In this context, mesh/pull-based swarming plays an important role either as pure streaming approach or in combination with tree/push mechanisms. Ho...
Article
Peer-to-peer live streaming mechanisms have shown to successfully enable shifting load from costly content servers to streaming clients. Yet, the resulting increase in scalability usually comes at the cost of higher streaming delays caused by the inevitable multi-hop overlay routing among peers. Various mechanisms have been proposed to tune the tra...
Article
A number of today’s over-the-top (OTT) services could greatly benefit from a flexible, efficient, and scalable network-layer multicast support on the Internet. IP multicast showed not to meet these requirements, hindering its adoption in more than individual network islands. As a consequence, Content Delivery Networks (CDNs) emerged as alternative...
Conference Paper
Due to missing IP multicast support on an Internet scale, over-the-top media streams are delivered with the help of overlays as used by content delivery networks and their peer-to-peer (P2P) extensions. In this context, mesh/pull-based swarming plays an important role either as a pure streaming approach or in combination with tree/push mechanisms....
Book
Video delivery over the Internet continues to dominate network traffic all over the world. After the success of video-on-demand services over the last decade, recently a notable shift of live video to the Internet can be observed. To enable future live streaming scenarios with hundreds of millions of concurrent users, new approaches are required to...
Technical Report
Full-text available
Due to missing IP multicast support on an Internet scale, over-the-top media streams are delivered with the help of overlays as used by content delivery networks and their peer-to-peer (P2P) extensions. In this context, mesh/pull-based swarming plays an important role either as pure streaming approach or in combination with tree/push mechanisms. Ho...
Conference Paper
Full-text available
A number of today’s over-the-top (OTT) services could greatly benefit from a scalable and efficient network-layer multicast support on the Internet. IP multicast showed to not meet these requirements and, thus, is not available for this purpose. Content Delivery Networks emerged as global alternative but usually end at the border of ISP networks. S...
Conference Paper
Dynamic network service chaining allows network operators to apply network services to customer traffic on demand and in a highly flexible manner. SDN and particularly OpenFlow-based approaches have been presented that exploit the flexibility and feature richness of OpenFlow for service chaining in data center settings. These systems often use netw...
Conference Paper
Today’s distributed systems have to work in changing environments and under different working conditions. To provide high performance under these changing conditions, many distributed systems implement adaptive behavior. While simple adaptation through parameter tuning can only react to a limited range of conditions, a switch between different mech...
Conference Paper
Full-text available
Recent studies show that an increasing number of over-the-top live streams is delivered over the Internet. For the delivery of those streams, the dynamically changing and potentially large number of users imposes a major challenge. Flash crowds, where the number of users multiplies or significantly drops in a very small time frame, can cause seriou...
Conference Paper
Full-text available
Live streaming of large-scale events such as the Olympic Games with a huge number of viewers is challenging, as the streaming infrastructure needs to scale fast and big, and often in an unpredictable manner. Peer-to-peer (P2P) live streaming (Peercasting) has proven to be beneficial in these scenarios, as resources are scaling inherently with the n...
Article
The increasing amount of over-the-top (OTT) live streams and the lack of global network layer multicast support poses challenges for a scalable and efficient streaming over the Internet. Content Delivery Networks (CDNs) help by delivering the streams to the edge of almost every Internet Service Provider (ISP) network of the world but usually also e...
Conference Paper
Internet Service Providers (ISPs) need to cope with a growing amount of over-the-top (OTT) traffic, often without a share in the high revenues of the content providers. To achieve an efficient global delivery of content, today content providers usually employ content delivery networks (CDNs) located at the edge of ISP networks from where content is...
Article
Mobile network operators are expected to face significant traffic increase in the upcoming years. One alternative method is to intelligently move transmissions to times of network underutilization, either on 3G/4G or by offloading to WiFi. Video content, predicted by Cisco to constitute 69% of mobile traffic, offers the greatest potential for offlo...
Conference Paper
Full-text available
The access to Online Social Networks (OSN) and to media shared over these platforms account for around 20% of today's mobile Internet traffic. For mobile device users, the access to media content and specifically videos is still challenging and costly. Mobile contracts usually have a data cap and connection qualities can vary greatly, depending on...
Conference Paper
Full-text available
The increasing market penetration of mobile devices, such as smartphones and tablets, poses additional challenges on the design of distributed systems. Due to the heterogeneous environment consisting of both, mobile and fixed devices, a multitude of effects on different scales need to be considered. Microscopic effects, such as an individual user’s...
Conference Paper
This work shows a demonstration on the work of the Collaborative Research Center 1053 pursuing Multi-Mechanism Adaptation for the Future Internet. Our prototype shows a live video streaming system on mobile devices featuring Peer-to-Peer (P2P) and Client/Server delivery concepts. The focus is to showcase seamless transitions between those mechanism...
Conference Paper
The peer-to-peer approach can greatly help to cope with highly dynamic live streaming workload by using idle client resources. Yet, P2P streaming typically comes at the cost of increased streaming delays caused by the inevitable multi-hop forwarding of content by peers within the overlay. Various P2P streaming approaches have been proposed aiming a...
Conference Paper
Network service chaining allows composing services out of multiple service functions. Traditional network service functions include, e.g., firewalls, TCP optimizers, web proxies, or higher layer applications. Network service chaining requires flexible service function deployment models. Related work facilitating service chaining include, e.g., the...
Conference Paper
Network Function Virtualization is a promising approach for network operators to allow moving network functions from hardware appliances to a pure software-based solution. In combination with software-defined networking concepts, this also allows for flexible service chaining approaches. In this paper, a proof-of-concept implementation of a recentl...
Conference Paper
Peer-to-Peer (P2P) has proven to be a scalable approach for content distribution, while reducing the load for the content provider. As P2P systems depend on each node's participation, reciprocal incentive mechanisms for stimulating contribution are a major building block in those systems. However, reciprocal incentive schemes fall short for resourc...
Conference Paper
Full-text available
The transmission of video content accounts for a large share of today's Internet traffic. While Video-on-Demand (VoD) substantially contributes to this, live streaming events such as video broadcasts from the Olympic Games can cause very high traffic volumes in the short term as well. Such peaks along with high fluctuations triggered by sudden chan...
Conference Paper
Full-text available
Over the years, the demand for high bandwidth services, such as live and on-demand video streaming, steadily increased. The adequate provisioning of such services is challenging and requires complex network management mechanisms to be implemented by Internet service providers (ISPs). In current broadband network architectures, the traffic of subscr...
Conference Paper
Full-text available
Peer-assisted delivery of video content has shown a great potential to reduce upload bandwidth requirements for content providers by exploiting idle client resources in the video dissemination process. As primary content sources, the servers run by content providers play a critical role in such systems, making their adequate provisioning a key part...
Conference Paper
Internet video streaming causes the second largest transfer volume and is the second fastest growing application class in Internet traffic analysis [3]. In this context, also the streaming of live content becomes increasingly relevant as more traditional broadcasters start delivering content over the Internet. Today, live video streaming services r...
Conference Paper
Full-text available
The Internet has seen a strong move to support new overlay applications offered over the cloud, which demand for a coherent and integrated control in underlying heterogeneous networks in a scalable, resilient, and cost-efficient manner. A tighter integration of network management and cloud service functionality can lead to cross-layer optimization...
Conference Paper
The proliferation of wireless broadband technologies and mobile devices has led to an increase in mobile traffic, especially due to a rapid growth of real-time entertainment such as video streaming on smartphones. Mobile peer-to-peer-based content distribution schemes can help to relieve infrastructure based mobile networks, but require participati...
Conference Paper
Full-text available
Video streaming over the Internet is becoming increasingly popular. Existing streaming systems range from traditional client/server to peer-to-peer-based approaches. However, no single streaming mechanism fits all possible video streaming scenarios. Therefore, this paper proposes a novel adaptive video streaming approach supporting transitions betw...
Conference Paper
The transmission of video data is a major part of traffic on today's Internet. Since the Internet is a highly dynamic environment, quality adaptation is essential in matching user device resources with the streamed video quality. This can be achieved by applying mechanisms that follow the Scalable Video Coding (SVC) standard, which enables scalabil...
Conference Paper
Full-text available
Since P2P systems have become popular in the late nineties, simulation of these systems has always been a preferable method of performance evaluation. Simulations facilitate the development and evaluation of 'newprotocols and mechanisms, while enabling a comparison of existing solutions. In this paper, we present PeerfactSim.KOM, a discrete-event P...

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