Christian Timmerer
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Christian Timmerer is TPC co-chair of ACM MMSys 2020

The ACM Multimedia Systems Conference (MMSys) is held June 8-11, 2020 in Istanbul, Turkey and provides a forum for researchers to present and share their latest research findings in multimedia systems. While research about specific aspects of multimedia systems are regularly published in the various proceedings and transactions of the networking, operating systems, real-time systems, databases, mobile computing, distributed systems, computer vision, and middleware communities, MMSys aims to cut across these domains in the context of multimedia data types. This provides a unique opportunity to investigate the intersections and the interplay of the various approaches and solutions developed across these domains to deal with multimedia data types.

General Chairs
— Ali C. Begen (Ozyegin University and Networked Media, Turkey)
— Laura Toni (University College London, UK)

TPC Chairs
— Özgü Alay (Simula Metropolitan and University of Oslo, Norway)
— Christian Timmerer (Alpen-Adria-Universität Klagenfurt and Bitmovin, Austria)

Link: ACM MMSYS 2020

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ACMMM’19-Demo-Paper: Docker-Based Evaluation Framework for Video Streaming QoE in Broadband Networks

Abstract: Video streaming is one of the top traffic contributors in the Internet and a frequent research subject. It is expected that streaming traffic will grow 4-fold for video globally and 9-fold for mobile video between 2017 and 2022. In this paper, we present an automatized measurement framework for evaluating video streaming QoE in operational broadband networks, using headless streaming with a Docker-based client, and a server-side implementation allowing for the use of multiple video players and adaptation algorithms. Our framework allows for integration with the MONROE testbed and Bitmovin Analytics, which bring on the possibility to conduct large-scale measurements in different networks, including mobility scenarios, and monitor different parameters in the application, transport, network, and physical layers in real-time.

Authors: Cise Midoglu (Simula), Anatoliy Zabrovskiy (AAU), Özgü Alay (Simula), Daniel Hölbling-Inzko (Bitmovin), Carsten Griwodz (Univ. of Oslo), Christian Timmerer (AAU/Bitmovin)

Keywords: adaptive streaming, network measurements, OTT video analytics, QoE

Link: ACMMM 2019

Christian Timmerer
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ACMMM’19: Towards 6DoF HTTP Adaptive Streaming Through Point Cloud Compression

Abstract: The increasing popularity of head-mounted devices and 360° video cameras allows content providers to offer virtual reality video streaming over the Internet, using a relevant representation of the immersive content combined with traditional streaming techniques. While this approach allows the user to freely move her head, her location is fixed by the camera’s position within the scene. Recently, an increased interest has been shown for free movement within immersive scenes, referred to as six degrees of freedom. One way to realize this is by capturing objects through a number of cameras positioned in different angles, and creating a point cloud which consists of the location and RGB color of a significant number of points in the three-dimensional space. Although the concept of point clouds has been around for over two decades, it recently received increased attention by ISO/IEC MPEG, issuing a call for proposals for point cloud compression. As a result, dynamic point cloud objects can now be compressed to bit rates in the order of 3 to 55 Mb/s, allowing feasible delivery over today’s mobile networks. In this paper, we propose PCC-DASH, a standards-compliant means for HTTP adaptive streaming of scenes comprising multiple, dynamic point cloud objects. We present a number of rate adaptation heuristics which use information on the user’s position and focus, the available bandwidth, and the client’s buffer status to decide upon the most appropriate quality representation of each object. Through an extensive evaluation, we discuss the advantages and drawbacks of each solution. We argue that the optimal solution depends on the considered scene and camera path, which opens interesting possibilities for future work.

Authors: Jeroen van der Hooft, Tim Wauters, Filip De Turck (Ghent University – imec), Christian Timmerer, and Hermann Hellwagner (Alpen-Adria-Universität Klagenfurt)

Keywords: HTTP adaptive streaming, MPEG-DASH, immersive video, point clouds, MPEG V-PCC, rate adaptation

Link: ACMMM 2019

Philipp Moll
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Philipp Moll presented his work “Towards an NDN-based Online Gaming Architecture” as demo on the NDN Community Meeting held at the National Institute of Standards and Technology (NIST)

In the course of his research stay at UCLA, Philipp Moll attended the NDN Community Meeting 2019 and presented his work “Towards an NDN-based Online Gaming Architecture”.

Abstract: The popularity of online games increased steadily during the last decades and nowadays games play an important role in the entertainment industry. Although the rising popularity of online games goes hand in hand with increased complexity of technical challenges, the networking stack of online games is built on decades-old technologies, which were never intended to be used in games, and is often responsible for crashing game servers during peak hours. Replacing the currently used connection-oriented networking approach by a content-centric architecture could yield advantages reaching beyond avoiding inefficiencies found in IP-based online games. We propose an NDN-based system for Massive Multiplayer Online Role-Playing Games (MMORPGs) which tackles issues found in IP-based systems.

Authors: Philipp Moll, Sebastian Theuermann, Hermann Hellwagner (Klagenfurt University), Jeff Burke (UCLA)

Links:

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ARTICONF: Strengthening the motivation towards Democratic Social Media Platforms

Trust, privacy, control and what else ! Lets hear to ARTICONF consortium as what transpires them to build Next Generation Social Media Ecosystem with novel set of trustworthy, resilient, globally sustainable and decentralized data-driven services.

Philipp Moll
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The paper “Inter-Server Game State Synchronization using Named Data Networking” has been accepted

The paper “Inter-Server Game State Synchronization using Named Data Networking” has been accepted for publication at the ACM Conference on Information-Centric Networking 2019 to be held in Macau, China (24-26 September 2019).

Authors: Philipp Moll, Sebastian Theuermann, Natascha Rauscher, Hermann Hellwagner (Alpen-Adria-Universität Klagenfurt), Jeff Burke (UCLA)

Abstract: In this paper, we develop a system for inter-server game state synchronization using the NDN architecture. We use Minecraft as a real-world example of online games and extend Minecraft’s single-server architecture to work as multi-server game. In our prototype, we use two different NDN-based approaches for the dissemination of game state updates in server clusters. In a naive approach, servers request game state updates for small segments of the game world from other servers of the cluster. In an improved approach – the region manifest approach – servers identify changed parts of the world by subscribing to manifest files containing information about world regions managed by the other servers of the cluster. An apparent downside of the NDN approaches is the high overhead when handling small-sized game state updates, but our evaluation shows that NDN already improves on IP-based implementations regarding the resulting traffic volume when three or more servers are involved. Furthermore, caused by NDN’s inherent multicast functionality, the advantage over IP increases with the size of the server cluster. Moreover, the use of NDN-based approaches leads to benefits beyond traffic reduction only. The name-based host-independent access to world regions allows to scale server clusters easier.

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ARTICONF Representation @EuroPar2019 @LSDVE

The papers titled, ‘ARTICONF: Towards a Smart Social Media Ecosystem in a Blockchain Federated Environment’ , and ‘A Semantic Model with Self-Adaptive and Autonomous Relevant Technology for Social Media Applications’ presented at Seventh Workshop on Large Scale Distributed Virtual Environments, LSDVE 2019 collocated at Europar 2019.

ARTICONF team also took advantage of the conference to hold a round table inter-cooperative discussion with an another Next Genreation Social Media EU H2020 project HELIOS with Dr. Laura Ricci, Dr. Dana Petcu, and Dr. Zhiming Zhao. Both project teams identified a number of similar research topics exiting within both projects namely #Context #Trust #CommunityDetection, and hence pledged support for improved inter and intra- cooperation.

The presented papers description are as follows:

1. ARTICONF: Towards a Smart Social Media Ecosystem in a Blockchain Federated Environment

Authors: Radu Prodan, Nishant Saurabh, Zhiming Zhao and Kate Orton-Johnson

2. A Semantic Model with Self-Adaptive and Autonomous Relevant Technology for Social Media Applications

Authors: Zahra Najafabadi Samani, Alexander Lercher, Nishant Saurabh, Radu Prodan

Articonf LSDVE, Euro-Par 2019

Articonf LSDVE, Euro-Par 2019

Prof. Radu Prodan
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Radu Prodan is program chair at the HeteroPar’2019 workshop in Göttingen

Radu Prodan is program chair at the seventeenth international workshop on algorithms, models and tools for parallel computing on Heterogeneous Platforms (HeteroPar’2019), collocated at Euro-Par 2019, August 27, 2019.

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Hermann Hellwagner is Lead Guest Editor of the Special Issue “Communication in Networks of Unmanned Aerial Vehicles (UAVs)” of the open access journal “Sensors”

https://www.mdpi.com/journal/sensors/special_issues/communication_networks_UAVs

Prof. Radu Prodan
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The paper “A Container-driven Approach for Resource Provisioning in Edge-Fog Cloud” has been accepted

The paper “A Container-driven Approach for Resource Provisioning in Edge-Fog Cloud” has been accepted for publication at the 5th International Symposium on Algorithmic Aspects of Cloud Computing, ALGOCLOUD 2019 to be held at Munich, Germany (September 9-13, 2019).

Authors: Hamid Mohammadi Fard, Radu Prodan and Felix Wolf