by Eve M. Schooler, Eve M. Schooler
Multimedia Systems
ftp://ftp.isi.edu/isi-pubs/rs-93-360.ps.Z
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Abstract:
As the last two meetings of the Internet Engineering Task Force (IETF) have shown, the demand for Internet teleconferencing has arrived. Packet audio and video have now been multicast to approximately 170 different hosts in 10 countries, and for upcoming meetings the number of remote participants is likely to be substantially larger. Yet the network infrastructure to support wide scale packet teleconferencing is not in place. These experiments represent a departure from the two- to ten-site telemeetings that are the norm today. They represent an increase in scale of multiple orders of magnitude in several interrelated dimensions. This paper discusses the impact of scaling on our efforts to define a multimedia teleconferencing architecture. Three scaling dimensions of particular interest include: (i) very large numbers of participants per conference, (ii) many simultaneous teleconferences, and (iii) a widely dispersed user population. Here we present a strawman architecture and describe how conference-specific information is captured, then conveyed among end systems. We provide a comparison of connection models and outline the tradeoffs and requirements that change as we travel along each dimension of scale. In conclusion, we identify five critical needs for a scalable teleconferencing architecture.
Citations
|
873
|
RSVP: A New Resource ReSerVation Protocol
– Zhang, Deering, et al.
- 1993
|
|
540
|
Lightweight causal and atomic group multicast
– Birman, Schiper, et al.
- 1991
|
|
539
|
Supporting real-time applications in an integrated services packet network: architecture and mechanism
– Clark, Shenker, et al.
- 1992
|
|
163
|
Experimental internet stream protocol, version 2
– Topolcic
- 1990
|
|
143
|
Network support for multimedia: A discussion of the Tenet approach
– Ferrari, Banerjea, et al.
- 1994
|
|
127
|
Voice communication across the Internet: A Network Voice Terminal
– Schulzrinne
- 1992
|
|
121
|
Collaboration Awareness in Support of Collaboration Transparency: Requirements for the Next Generation ofShared Window Systems
– Lauwers, Lantz
- 1990
|
|
117
|
MMConf: an infrastructure for building shared multimedia applications
– Crowley, Milazzo, et al.
|
|
112
|
First IETF Internet audiocast
– Casner, Deering
- 1992
|
|
76
|
Remote Procedure Call Protocol Specification. Network Working Group RFC1050
– Microsystems
- 1988
|
|
72
|
The Rapport Multimedia Conferencing System
– Ahuja, Ensor, et al.
- 1988
|
|
67
|
H.261 Software Codec for Videoconferencing over the Internet
– Turletti
- 1993
|
|
47
|
VMTP as the transport layer for high-performance distributed systems
– Cheriton, Williamson
- 1989
|
|
43
|
The Prospero File System: A Global File System Based on the Virtual System Model
– Neuman
- 1992
|
|
39
|
Multimedia conferencing in the etherphone environment
– Vin, Zellweger, et al.
- 1991
|
|
27
|
A Software Architecture for Workstations Supporting Multimedia Conferencing in Packet Switching Networks
– Leung, Baumgartner, et al.
- 1990
|
|
25
|
Case study: multimedia conference control in a packet-switched teleconferencing system
– Schooler
- 1993
|
|
22
|
Technical Overview of Directory Services Using the X.500 Protocol
– Heker, Reynolds, et al.
- 1992
|
|
14
|
An Architecture for Multimedia Connection Management
– Schooler, Casner
- 1992
|
|
12
|
A Transport Protocol for Audio and Video Conferences and other Multiparticipant Real-Time Applications", Working Draft
– Schulzrinne
- 1992
|
|
12
|
An open-systems model for computer-supported collaboration
– Garcia-Luna-Aceves, Craighill, et al.
- 1988
|
|
9
|
The Connection Architecture for the Etherphone System", Xerox PARC
– Swinehart
- 1990
|
|
8
|
Touring Machine: A Software Platform for Distributed Multimedia Applications
– Arango
- 1992
|
|
8
|
Software Architecture of DiCE: A Distributed Collaboration Environment
– Chen, Barzilai, et al.
- 1992
|
|
7
|
DNS Encoding of Network Names and Other Types", RFC 1101
– Mockapetris
- 1989
|
|
5
|
Remote Conferencing Architecture
– Chang, Whaley
- 1992
|
|
3
|
A Proposed Flow Specification", RFC 1363
– Partridge
- 1992
|
|
1
|
The Connection Control Protocol: Specification (v1.0
– Schooler
- 1992
|
|
1
|
Inter-Domain Multicast Routing", Working Draft
– Crowcroft, Ballardie, et al.
- 1990
|
|
1
|
presentation in A/V Transport WG, 24th Internet Engineering Task Force
– Eriksson
- 1992
|
|
1
|
The CAR System: Multimedia in Support of Collaborative Design
– Handley
- 1992
|
|
1
|
Multiparty Connections
– Touch
- 1992
|
