Group support in multimedia communications systems

Mauthe, Andreas; Coulson, Geoff; Hutchison, David; Namuye, Silvester

doi:10.1007/3-540-61028-6_16

Cited by 6 publications

(2 citation statements)

References 14 publications

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“…The T.120 series of recommendations can therefore be regarded as one specic example which should be kept in mind when designing more general group and session management services. Other examples of multimedia communication systems dealing with group support have been described by Mauthe et al [17]. However, all these approaches either do not concentrate on group and session management or they are restricted to certain transport infrastructures, or both.…”

Section: Related Workmentioning

confidence: 99%

“…Both aspects can be approached in a number of dierent ways, ranging from very low-level, being concerned only with transport technology, t o v ery abstract models, which take m ultimedia multipoint communications for granted and deal only with the design of applications and their interfaces. In general, various surveys [5,16,17,19,26] have shown that the need for communication platforms supporting multipoint communications is increasing. However, we feel that there is much more work being done in the eld of multimedia than in the eld of multiuser communication systems.…”

Section: Introductionmentioning

confidence: 99%

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A group and session management system for distributed multimedia applications

Wilde¹,

Freiburghaus²,

Koller³

et al. 1996

Lecture Notes in Computer Science

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Abstract. Distributed multimedia applications are very demanding with respect to support they require from the underlying group communication platform. In this paper, an approach is described which aims at providing group communication platform designers with a component which can be used for powerful group and session management functionality. This component, which can be integrated into group communication platforms, is part of a system called the group and session management system (GMS). The GMS model consists of GMS user agents, which are the components to be integrated into group communication platforms, and GMS system agents which are distributed directory agents providing the distributed database which the user agents access. Communication between these two t ypes of agents is dened in two protocols, the GMS access protocol between user agents and system agents, and the GMS system protocol between system agents. GMS also denes a numberof objects and relations which can be used to manage users, groups, and sessions on a very abstract level, thus providing both group communication platform designers and programmers of distributed multimedia application with a high-level description of group communications. This approach enables a truly integrated approach for collaborative applications, where all applications, even when using dierent group communication platforms, can share the same database about users, groups, and sessions. The paper also contains a short description of the ongoing implementation of GMS's components.

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Section: Related Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A group and session management system for distributed multimedia applications

Wilde¹,

Freiburghaus²,

Koller³

et al. 1996

Lecture Notes in Computer Science

View full text Add to dashboard Cite

show abstract

Transport‐independent group and session management for group communications platforms

Wilde

Plattner

1997

Trans Emerging Tel Tech

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Abstract. With more and more computers gradually changing from isolated, personal tools to networked workstations, group communications is an area of research which has received much attention recently. This paper focuses on a model and the architecture of a system which supports group communications by providing group and session management functionality. The system architecture is related to DNS or X.500, however avoids their complexity by focusing on group and session management and adding functionality where necessary. New functionality is needed for the dynamics of group communications (members of a connection may change over the lifetime of the connection) and increased complexity of relations which may be established between objects. A model is described which defines six object types which represent the relevant objects. Users and groups represent real world users and their relations. Sessions and flows describe ongoing group communications. Flow templates and certificates provide mechanisms for management and security issues. The architecture presented in this paper can be used for group and session management support within different group communications platforms. A description of the implementation as well as implementation results are given in the last section.

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