Fraunhofer Institut für Integrierte Publikations-und Informationssysteme IPSI

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MGMS/GML - Towards a new policy specification framework for multicast group integrity

2004 , Meissner, A. , Musunoori, S.B. , Wolf, L.

Addressing multicast group integrity management with particular regard to policy specification, this paper discusses our approach referred to as MGMS/GML - a tailored Multicast Group Management System complemented by our Group Management Language. We classify and compare existing policy specification approaches and find that none is sufficiently suitable for our problem domain, which includes tasks such as specifying and controlling integrity conditions on multicast group composition, e.g. limiting the number of senders in a group, or placing a cap on member fluctuation. Typical problems in group integrity management are identified, and an example illustrates the use of GML Following an architectural and functional overview of our system, we look at selected implementation issues and describe how policies may be specified at runtime.

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Publication

A security model for multicast group integrity management

2001 , Hollick, M. , Meissner, A. , Wolf, L. , Steinmetz, R.

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Publication

Collaborative media steaming in an in-home network

2001 , Kahmann, V. , Wolf, L.

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Cost and price calculation for internet integrated services

1999 , Karsten, M. , Schmitt, J. , Wolf, L. , Steinmetz, R.

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VC management for heterogeneous QoS multicast transmissions

2002 , Schmitt, J. , Wolf, L. , Karsten, M. , Steinmetz, R.

A crucial component of the interaction between ATM's and the Internet's Quality of Service (QoS) architectures is the efficient mapping of RSVP (Resource reSerVation Protocol) as the Internet's signalling protocol onto the according ATM mechanisms. In particular, this article focuses on one of the most contrary characteristics of RSVP and ATM signalling. This is the support for heterogeneous reservations by RSVP over the ATM subnetwork, taking into account that ATM only allows for a homogeneous QoS within a single Virtual Circuit (VC). We present previous approaches to the solution of this problem and argue for more sophisticated and efficient approaches to manage ATM VCs taking into consideration ATM tariffs and resource consumption.

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Security Issues in Group Integrity Management for Multimedia Multicasting

2001 , Meissner, A. , Wolf, L. , Hollick, M. , Steinmetz, R.

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Publication

GCAP: A New Multimedia Multicast Architecture for QoS

2001 , Diaz, M. , Canonico, R. , Costa, L. , Fdida, S. , Hutchison, D. , Mathy, L. , Meissner, A. , Owezarski, S. , Vida, R. , Wolf, L.

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A framework for group integrity management in multimedia multicasting

2001 , Meissner, A. , Wolf, L. , Schönfeld, W. , Steinmetz, R.

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A Novel Group Integrity Concept for Multimedia Multicasting

2001 , Meissner, A. , Wolf, L. , Steinmetz, R.

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Charging for packet-switched network communication - motivation and overview

2000 , Karsten, M. , Schmitt, J. , Stiller, B. , Wolf, L.

Packet-switched network technology is expected to form the integration layer for future multi-service networks. The trend to integrate voice and data traffic can already be observed in the Internet and is expected to carry on until the full integration of all media types is achieved. At the same time it becomes obvious that the business model employed for current Internet usage is probably not sustainable for the creation of an infrastructure suitable to support a diverse and ever-increasing range of application services. Currently, the Internet provides only a single class of best-effort service and prices are mainly built on flat-fee, access-based schemes. However, the large and increasing differentiation of demand for quality of transmission services creates the necessity to differentiate service provision and, consequently, charging for network communications. In this article, we survey relevant service models and motivate the need for appropriate charging mechanisms. We give an overview on requirements for a charging system, its technical components, and issues for future business models that might by employed by service providers.

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