Service architecture for coordinating multipoint multimedia communications

Shuichi Machida, Yuzo Koga, Shinro Miyamoto, Yusuke Morikawa, Hiroshi Shigeno, Yutaka Matsushita

Research output: Contribution to journalConference articlepeer-review


In this paper, we propose a service architecture that enables end users to establish multipoint multimedia communications without being conscious of one another's networking environment. The proposed architecture is composed of three conceptual models based on RM-ODP (Reference Model of Open Distributed Processing), those are concerned with enterprise, information and computational viewpoint, respectively. From the enterprise viewpoint, the Session Coordinator Role is introduced, which manages connections among end users in consideration of their terminal devices' capabilities. Furthermore, the Content Provider and Content Consumer Role, which respectively play the role of providing and consuming a multimedia content, are also introduced to represent these capabilities. These roles are embodied as service components from the computational viewpoint. From the information viewpoint, two concepts, "session" and "content flow", are introduced to facilitate unified management of various multimedia communications. The concept "continuous session mobility" is also the key idea of the architecture. This enables end users to move around participating in a multimedia conferencing independently of their networking environments. We show the concrete model of realizing it by implementing a prototype system based on the architecture.

Original languageEnglish
Pages (from-to)118-127
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2001 Dec 1
EventMultimedia Systems and Applications IV - Denver, CO, United States
Duration: 2001 Aug 212001 Aug 22


  • Continuous session mobility
  • Coordinator
  • Multimedia communication
  • RM-ODP
  • Service architecture

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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