Kick-off Meeting GI/ITG KuVS Fachgespräch:

"NG Service Delivery Platforms & Service Overlay Networks"

		November 13, 2009, 9:00 - 16:00 hosted by Prof. Dr. Thomas Magedanz, Technische Universität Berlin, Chair for Next Generation Networks (AV) at the premises of Fraunhofer Institute FOKUS, Room 1008, Kaiserin-Augusta-Allee 31, 10589, Berlin, Germany

Minutes

Around 50 attendants joined the KUVS “NG Service Delivery Platforms & Service Overlay Networks” expert´s talk kick-off meeting in Berlin on November 13, 2009. One keynote, three industry talks and eight talks from universities have been presented and discussed. Feel free to have a look on the pictures and presentations. Note that interested researchers from academia and industry are welcome to join this open KuVS group!

Group chairmen Dr. Wolfgang Kellerer (DOCOMO Euro-Labs) and Prof. Dr. Thomas Magedanz (TU Berlin) opened the meeting.

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Agenda

You may download all presentation slides in one ZIP file.

09:00	Opening (PDF) Dr. Wolfgang Kellerer, DOCOMO Euro-Labs Prof. Dr. Thomas Magedanz, TU Berlin
09:15	Invited Talk: NetServ: Deploying Customized Network Services on Demand (PDF) Prof. Henning Schulzrinne, Columbia University, USA
10:00	Industry Session Chair: Prof. Dr. Thomas Magedanz, TU Berlin Advanced Service Infrastructure for a Next Mobile Network (PDF) W. Kellerer, DOCOMO Euro-Labs ISA - towards an integrative service architectures for telcos (PDF) J. Steffens, T-Labs N.N. T.M. Bohnert, SAP Research
11:00	Discussion / Coffee break
11:30	P2P and Ad hoc Session Chair: Anastasius Gavras, Eurescom GmbH A P2P Virtualization for Distributed Adaptive Conference Management (PDF) A. Knauf, G. Hege, T.C. Schmidt, HAW Hamburg, M. Wählisch, FU Berlin Update Delivery for Peer-to-Peer-based Massively Multiuser Virtual Environments (PDF) G. Schiele, R. Süselbeck, C. Becker, Universität Mannheim Service Placement in Ad Hoc Networks (PDF) G. Wittenburg, J. Schiller, FU Berlin Optimization of Distributed Services with UNISONO (PDF) D. Haage, R. Holz, Universität Tübingen
13:00	Lunch Break (Sandwiches and Softdrinks)
13:45	SOA Session Chair: Prof. Dr. Paul Müller, University of Kaiserslautern An Open Service Environment for Service Exposure and Orchestration of Heterogeneous NGN Services (PDF) N. Blum, T. Magedanz, Fraunhofer FOKUS, T. Margaria, Universität Potsdam OpenEPC Demo (PDF) Ariba: A Framework for Developing Decentralized Services (PDF) C.P. Mayer, C. Hübsch, O.P. Waldhorst, Institut für Telematik, Universität Karlsruhe (TH) Instant-X: SOA for Multimedia Communication in NGNs (PDF) J.-P. Elsholz, H. Schmidt, S. Schober, F.J. Hauck, Universität Ulm BIS-Grid: Orchestration as a Service using Grid Technologies and WS-BPEL (PDF) A. Höing, O. Kao, TU Berlin
15:15	Coffee Break
15:30	Quo Vadis SDP Fachgespräch
16:00	Closing

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Abstracts

“NetServ: Deploying Customized Network Services on Demand”
Prof. Henning Schulzrinne, Columbia University, USA

There is increasing concern that the Internet is becoming ossified, with few new network services being deployed. We have started a new project, NetServ, that allows to dynamically deploy services in all kinds of Internet devices, from mobile devices and set-top boxes to home and back-bone routers. We support three kinds of services:

• traffic monitoring
• traffic modification and
• network services

Our current prototype is implemented on top of the CLICK router and the OSGI Java framework.

“Advanced Service Infrastructure for a Next Mobile Network”
W. Kellerer, DOCOMO Euro-Labs, Germany

Today's IP-based service infrastructure spans a whole range of diverse service delivery platforms spanning from rather centralized platforms such as the IP Multimedia Subsystem (IMS) to fully decentralized systems provided by service overlay networks such as Peer-to-Peer networks. This diversity also emerges from different service provisioning paradigms, providing services in a traditional telco operator way or in a pure web based way with open APIs. What would be the features of a next generation service delivery platform? This presentation looks at this question from a mobile operator point of view. We identify some key requirements paving the way to a new service infrastructure architecture combining the advantages of the aforementioned paradigms.

“ISA - towards an integrative service architectures for telcos”
J. Steffens, T-Labs, Germany

Both increasing competition from established web companies and over-the-top players, and business opportunities from new Web 2.0 related services give reason to telcos to open up their service delivery platforms for integrative offerings in the frame of the Web2.0 service ecosystem. Whereas the web community provides innovative and hyped services that are open and can enrich telco service offerings, telcos help the user to manage digital assets across networks and devices with superior user experience. To benefit from both sides, from the user’s point of view, maximum flexibility and ease of use in deliberately combining components from Web and telco players to integrated services is desired. From telcos’s point of view, new models of co-creation need to be implemented to meet this demand, and to extend their reach beyond the traditional network customer basis.
This presentation investigates and discusses the major design principles needed for a telco SDP architecture bringing together the best of telco and Web worlds: supporting user centricity, enabling bilateral service integration and establishing the enabler sphere.

“A P2P Virtualization for Distributed Adaptive Conference Management”
A. Knauf, G. Hege, T.C. Schmidt, HAW Hamburg, M. Wählisch, FU Berlin

An increasing number of popular conferencing applications operate in a lightweight, infrastructure-independent ad hoc fashion. These P2P-type systems raise the demand for scalable, adaptive self organization of conferencing in a standard-compliant way. The traditional approach for conference signaling uses a central point of control called focus, which limits scalability and presents a single point of failure.
We alternate this centralized paradigm using a SIP-based approach for distributed conference management in a Peer-to-Peer environment. The protocol defines different roles for multi-party controllers by distributing the locators for a conference focus in a transparent fashion. To maintain a consistent view among the focus peers, we extend the Event Package for Conference State to meet multi-focus demands and make use of the P2PSIP overlay to virtualize the focus identifier.

“Update Delivery for Peer-to-Peer-based Massively Multiuser Virtual Environments”
G. Schiele, R. Süselbeck, C. Becker, University of Mannheim

Peer-to-peer-based Massively Multi-user Virtual Environments require an update distribution overlay to propagate state updates between peers quickly and scalably. We present our approach for such an overlay and an update propagation algorithm which utilizes it.
Depending on the peers' available resources our approach dynamically shifts work load between normal peers and super peers, so-called coordinators. This allows us to adapt the system's behaviour flexibly to changing system environments and application requirements.

“Service Placement in Ad Hoc Networks”
G. Wittenburg, J. Schiller, FU Berlin

Service placement addresses the questions of how many instances of the same service should be available in an ad hoc network and which nodes are best suited for hosting them. A good choice of service hosts reduces the overall network traffic and latency, and it can also be used to optimize the network performance according to service-specific metrics. We propose a novel approach to service placement that optimizes the number and the location of service instances based on usage statistics and partial knowledge of the network topology as derived from routing information. Our system takes advantage of the interdependencies between service placement, service discovery and the routing of service requests to reduce network overhead, and it is unique in that it explicitly considers the communication between service instances that is required to synchronize shared data.

“Optimization of Distributed Services with UNISONO”
D. Haage, R. Holz, Universität Tübingen

Distributed services are a special case of P2P networks where nodes have several distinctive tasks. Based on previous work, we show how UNISONO provides a way to optimize these services to increase performance, efficiency and user experience. UNISONO is a generic framework for host-based distributed network measurements.
In this talk, we present UNISONO as an Enabler for self-organizing Service Delivery Plattforms. We give a short overview of the UNISONO concept and its current status.
To show how distributed services benefit from its usage we provide two different examples. The first is a fully distributed event notification service from the overlay-based Future Internet approach SpoVNet. This is also the context UNISONO was primarily developed in.
The secon example is based on a service-oriented architecture (SOA) and shows our vision of a self-organizing SOA environment, where services are provided where needed, with more efficiency as possible by a centralized administration.

“An Open Service Environment for Service Exposure and Orchestration of Heterogeneous NGN Services”
N. Blum, T. Magedanz, Fraunhofer FOKUS, T. Margaria, Universität Potsdam

Adopting technical concepts of providing high-level APIs for open service access from the Internet, major telecommunications operators have started developer portals to allow 3rd party developers access to internal service enablers and network functionality. We believe that operators exposing telecommunications services will need to offer APIs tailored to fit developer needs on the one hand to succeed in a competing open service provider market. On the other hand, it is required to offer an environment to create and orchestrate heterogeneous telecommunications and non-telecommunications services by integrating 3rd party APIs together with open telco APIs. In this work, we classify common state-of-the-art API technologies for open distributed services that abstract of specific network technologies and orchestration languages regarding the integration of multiple different kind of service end points.
We design a middle-ware system that allows the exposure of APIs, their integration into service creation environments and the orchestration of heterogeneous services consisting of operator-owned and 3rd party APIs.

Ariba: A Framework for Developing Decentralized Services
C.P. Mayer, C. Hübsch, O.P. Waldhorst, Institut für Telematik, Universität Karlsruhe (TH)

Developing new network services in the Internet is complex and costly. This high entrance barrier has prevented new innovation and has stuck the Internet as being mainly client/server-based. End-system based decentralized services are cheaper but more complex than centralized systems. The ariba framework aims at easy development of such decentralized services without infrastructure support. In this paper we present the ariba framework and show how it can facilitate development of decentralized services through self-organization and its network abstraction.

“Instant-X: SOA for Multimedia Communication in NGNs”
J.-P. Elsholz, H. Schmidt, S. Schober, F.J. Hauck, Universität Ulm

The globalisation of our society leads to an increasing need for spontaneous communication. However, the development of such applications is a tedious and error-prone process. This results from the fact that in general only basic functionality is available in terms of protocol implementations and codecs. This leads to inflexible proprietary software systems implementing unavailable functionality on their own.

In this work, we present Instant-X, a novel multimedia middleware for next generation networks. Unlike related work, Instant-X provides a programming model with a comprehensive API for essential tasks of multimedia applications. This API abstracts from concrete component implementations and thus allows replacing specific protocol implementations without changing the application code. Instant-X uses OSGi as component platform providing multimedia functionality in terms of services according to the service oriented architecture (SOA).

Furthermore, Instant-X supports dynamic deployment, i.e., unavailable functionality can be automatically loaded at runtime.

“BIS-Grid: Orchestration as a Service using Grid Technologies and WS-BPEL”
A. Höing, O. Kao, TU Berlin

The BIS-Grid project, as part of the German D-Grid initiative, investigates service orchestration using Grid service technologies to show how such technologies can be employed for information systems integration, especially when crossing enterprise boundaries. Small and medium enterprises will be enabled to integrate heterogeneous business information systems and to use external resources and services with affordable effort.
In this presentation, we introduce our Orchestration as a Service (OaaS) paradigm and present the BIS-Grid OaaS Infrastructure. This infrastructure is based upon service extensions to the Grid middleware UNICORE 6 to use an arbitrary WS-BPEL workflow engine and standard WS-BPEL to orchestrate both plain Web services and statefull WSRF-based Grid services. The so-called BIS-Grid engine supports advanced security standards like X509 Certificates and role based access control and also regards issues like data privacy.

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Call for Presentations

Authors interested to give a 15 minutes presentation about their recent research results in the area covered by the Fachgespräch should send a two page extended abstract (including references) to Dr. Kellerer and Prof. Magedanz by October 9th, 2009. The Steering Group of this experts forum will finally select the presentations based on the submitted papers. Authors will be informed by October 16th, 2009. Topics of interest included are listed here. For this first meeting we put a special focus on P2P Overlay Architectures in NGNs.

Aim of the 1st GI/ITG Kommunikation und Verteilte Systeme (KuVS) Workshop on NGN Service Delivery Platforms & Service Overlay Networks is to give scientists the opportunity to present their work and ideas in this area and strengthen cooperation.

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Transfer to the Venue of Fraunhofer Institute FOKUS

Fraunhofer Institute FOKUS (Google Maps)
Room 1008, Kaiserin-Augusta-Allee 31, 10589 Berlin, Germany

By car
Take the Autobahn 115 (Avus) from Hanover, Leipzig, Nuremberg or the A 100 and at the junction follow the signs to Charlottenburg, then take the exit at Spandauer Damm, turn right, go straight ahead. After passing the Schloss Charlottenburg turn left over Luisenplatz and Mierendorffstraße (right) to Mierendorffplatz (right) into the Kaiserin-Augusta-Allee till you get to Goslarer Platz. Or take the A 115 or A 111 till you reach the motorway interchange Autobahndreieck Charlottenburg, take the exit for Jakob-Kaiser-Platz onto the Tegeler Weg, turn left into the Osnabrücker Straße and follow it to its end, then cross over Mierendorffplatz into the Kaiserin-Augusta-Allee and follow it till you reach Goslarer Platz.

By train
At Berlin Hauptbahnhof (main station) take the Expressbus TXL (direction: Airport Berlin Tegel) to the stop at Turmstraße/Beussel- straße. Change to bus M27 (direction: S+U Bahnhof Jungfernheide) and get out at Goslarer Platz. The Institute is directly in front of the bus stop.

From airport to Fraunhofer Institute FOKUS
The airport Flughafen-Tegel is located approx. 5 km from FOKUS. Take the express bus (line X9) to bus stop S+U-Bhf Jungfernheide. There you change to bus line M27 (direction S-Bhf Pankow). Leave the bus at bus stop Goslarer Platz. You can also take a taxi, it costs about 10 EUR (one way).

The airport Flughafen-Schönefeld is located approx. 30 km southeast from the center of the city.  There is the S-Bahn service S9 and the Airportexpress (Regionalbahn) that will bring you in approx. 40 min to the station Berlin Hauptbahnhof. At Hauptbahnhof please follow the description given above.
In fact, it is possible to take a taxi, but we do not know the price you will have to pay. It might come close to 45,00 EUR.

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Picture Gallery

Hotels

Proposals (for information only and without responsibility):

• ECONTEL HOTEL Berlin Charlottenburg (Amber Hotels) (***)
  Sömmeringstraße 24-26
  10589 Berlin-Charlottenburg
  (within walking distance)
• adrema hotel (GOLD INN Hotels Group) (****)
  Gotzkowskystraße 20/21
  10555 Berlin

• Hotel Novotel Berlin Am Tiergarten (Accor-Group) (****)
  Strasse des 17. Juni 106-108
  10623 Berlin