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Proceedings Paper

Comparison of floor control protocols for collaborative multimedia environments
Author(s): Hans-Peter Dommel; Jose J. Garcia-Luna-Aceves
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Paper Abstract

Improvements in networking allow for increasingly complex collaboration environments with regard to sessions scale, range of shared tasks, and distance between remote parties. Floor control protocols add an access discipline to such environments that allows to mitigate race conditions on shared resources and throttle media transmission. Primary causes for resource competition among users may be the lack of mutual awareness sand formal session orchestration, or network and shot limitations. Various, often proprietary and unscalable solutions for floor control have been implemented for telemedicine, video conferencing, or distributed interactive simulation. To this date, an analytic comparison of the efficacy of these solutions is lacking. With efficacy, we mean the proportion of time that a protocol takes to allocate a resource, accounting for social and technical overhead for muser behavior, protocol cost, and network conditions. We present a novel taxonomy an comparative performance analysis of known classes of floor control protocols, including socially driven protocols, collision sensing on shared resource, floor taken passing in fully-connected and ring topologies, and, innovatively, across shared control trees. Accordingly, aggregated and selective transmission of control information over a multicast control tree offers the best scalability and efficacy. A novel hierarchical floor control protocol correlating in its operation with tree-based reliable multicast is outlined.

Paper Details

Date Published: 22 January 1999
PDF: 12 pages
Proc. SPIE 3528, Multimedia Systems and Applications, (22 January 1999); doi: 10.1117/12.337420
Show Author Affiliations
Hans-Peter Dommel, Univ. of California/Santa Cruz (United States)
Jose J. Garcia-Luna-Aceves, Univ. of California/Santa Cruz (United States)

Published in SPIE Proceedings Vol. 3528:
Multimedia Systems and Applications
Andrew G. Tescher; Bhaskaran Vasudev; V. Michael Bove Jr.; Barbara Derryberry, Editor(s)

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