by Mulder, Harm; Pavon, Juan

DOI: 10.1023/A:1018799609052
Print publication date: 9/1/1997
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by Aidarous, Salah; Saracco, Roberto

DOI: 10.1023/A:1018747500874
Print publication date: 9/1/1997
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by Abdel-Wahab, H.; Maly, K.; Stoica, E.; Youssef1, A.

This paper discusses the important role ofmulticasting in designing, implementing, and managinginteractive multimedia distance learning systems. Thisis achieved in the context of IRI, an Interactive Remote Instruction system for distance learningbuilt at Old Dominion University. IRI is anInternet-based system which integrates continuousmultimedia, shared applications and a variety ofmulti-user collaborative utilities. In this paper, weconcentrate on the process architecture and dynamicmulticast group handling as they pertain to managingmultimedia resources, and show how they supportrobustness and short response time to user actions. IRIuses raw IP multicasting for audio and video streams andreliable multicasting for resource management and datasharing. The system is scalable (uses multicast for inter-process communication) andexpandable(partitioned into a setofautonomousbutcooperating components).

DOI: 10.1023/A:1018795416804
Print publication date: 9/1/1997
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by Anagnostakis, C. D.; Patrikakis, C. Z.; Prezerakos, G. N.; Venieris, I. S.

The evolving Interactive Multimedia (IMM)services require the development of flexible and easilyadaptable design tools that can interoperate with theunderlying broadband communication network. In this paper, we adopt a design philosophy based onthe Intelligent Network (IN) concept. The main advantageof this approach is the transparency of theservice-specific features to the underlying signalingsystem.Hence, a fast introduction of demanding services becomespossible even if the signaling of the network is notsophisticated enough to fully cover the requirements ofIMM services. The standard International TelecommunicationUnion (ITU) ServiceIndependent Block (SIB)-based methodology is used as abasis and further extended, where necessary, to covernew requirements, not originally predicted forNarrowband-Integrated Services Digital Network (N-ISDN), but arisingfrom IMM services. The paper further proceeds with thedevelopment of an Interactive Multimedia Object ClassLibrary (IMOCL) which adopts a high-levelobject-oriented approach that supports an easy evolution ofIN-based service design towards implementation. TheIMOCL is kept generic to the most possible extent aimingto provide a common framework for the design of a wide variety of IMM services using the INconcept. The IMOCL encompasses service managementfunctionality enabling the designer and provider of anIN service to manage the newly introduced service. Both ITU SIB-based and IMOCL methodologies, togetherwith the standard Specification and Description Language(SDL) technique are demonstrated in the design ofselected parts of a typical Video on Demand (VoD) service.

DOI: 10.1023/A:1018743432734
Print publication date: 9/1/1997
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by Biswas, Jit; Pillai, R. Radhakrishna

The architectural reference point for our workis a reference model which associates functionality withoperational planes along three orthogonalabstractedmodels. Within the context of this reference model a service management model is proposed. Themodel makes use of APIs for communicating managementinformation between a management application and serviceentities distributed in an ATM network. The APIs are based upon native ATM APIs that are similarto those that have recently been adopted by the ATMForum. The viability of the model is demonstrated bybuilding ATM multimedia services with service management capabilities. The model and the APIs have beenapplied to services executing in a national ATM network.Although the work is motivated by an ATM network, theservice management model is general, and may be applied to other networks as well. Some openissues in service management are brought out.

DOI: 10.1023/A:1018791315895
Print publication date: 9/1/1997
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by Fry, Michael; Witana, Varuni; Ray, Pradeep; Seneviratne, Aruna

We present a case study of multimedia servicedelivery in the World Wide Web environment. Our systemis founded on the notion of end-to-endQuality-of-Service (QoS) management. We outline our viewof an integrated management frame and explain how ourQoS management architecture fits into this framework. Wethen describe our object-oriented multimedia deliverysystem based on CORBA and Java. We discuss some issues of stream delivery and managementwith reference to our own experiences.

DOI: 10.1023/A:1018739331825
Print publication date: 9/1/1997
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by Chan, Mun Choon; Pacifici, Giovanni; Stadler, Rolf

In this paper we present a novel approach tomanaging real-time traffic in multimedia networks. Wefirst clarify the respective roles of the real-timecontrol system, the management system, and the network operator, and describe their interactions aimedat managing real-time services. Following thisframework, we introduce an architecture based on theconcept of managing network services by tuning theresource control tasks in the network control system. Todeal with the complexity of the network control system,we present the L-E model, a generic system-levelabstraction of a resource control task. We define high-level controls and visual abstractions forthe network operator which are supported by ourarchitecture. These concepts are evaluated on aprototyping platform, which includes a managementstation implemented on a graphics computer and ahigh-performance parallel machine running in real-timethe control and management systems of a large multimedianetwork. We conclude by describing the results of several experiments that illustrate thequantitative effect of management operations in a largemultimedia network that follows ourarchitecture.

DOI: 10.1023/A:1018787214987
Print publication date: 9/1/1997
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by Saydam, Tuncay

A multimedia service architecture is constructedby using a generic component model. In order to derivespecific components, a generic service agent and genericservice component architectures are developed. Using generic agent and the service components,a TINA-C conformant object-oriented hierarchical genericservice component is developed and presented. As anexample, a multimedia QoS service and management architecture is presented.

DOI: 10.1023/A:1018735230916
Print publication date: 9/1/1997
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by Hauser, Avi

DOI: 10.1023/A:1018783114078
Print publication date: 9/1/1997
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by Erfani, Shervin; Saadawi, Tarek

DOI: 10.1023/A:1018731130008
Print publication date: 9/1/1997
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