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Issue No.05 - September (1995 vol.15)
pp: 38-45
ABSTRACT
We describe a network software architecture for solving the problem of scaling very large distributed simulations. The fundamental idea is to logically partition virtual environments by associating spatial, temporal, and functionally related entity classes with network multicast groups. We exploit the actual characteristics of the real-world large-scale environments that are simulated by focusing or restricting an entity's processing and network resources to its area of interest via a local Area of Interest Manager (AOIM). Finally, we present an example of how we would implement this concept for ground vehicles. We have begun design and construction of the AOIM for use with the NPSNET 3D vehicle simulator. NPSNET is currently the only Distributed Interactive Simulation (DIS) protocol compliant simulator using IP Multicast communications and is suitable for operation over the Internet.
INDEX TERMS
Virtual Reality, Distributed Interactive Simulation, Internet Protocol Multicast, Distributed Interactive Entertainment, Large-Scale Virtual Environments.
CITATION
Michael R. Macedonia, Michael J. Zyda, David R. Pratt, Donald P. Brutzman, Paul T. Barham, "Exploiting Reality with Multicast Groups", IEEE Computer Graphics and Applications, vol.15, no. 5, pp. 38-45, September 1995, doi:10.1109/38.403826
REFERENCES
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5. T. Dunnigan and R.M. Macedonia, Getting It Right, Morrow, New York, 1993, p. 211.
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7. M.R. Macedonia et al., “NPSNET: A Network Software Architecture for Large-Scale Virtual Environments,” Presence, Vol. 3, No. 4, Winter 94.
8. “On-Ramp for Info Highway Is Closer,” San Jose Mercury News, May5, 1995, p. D1.
9. P. Curtis and D.A. Nichols, “MUDs Grow Up: Social Virtual Reality in the Real World,” Proc. IEEE Computer Conf., IEEE CS Press, Los Alamitos, Calif., 1994, pp. 193-200 (or ftp.parc.xerox.com/pub/MOO/papers/MUDsGrowUp.ps).
10. S. Benford et al., “Managing Mutual Awareness in Collaborative Virtual Environments,” Proc. Virtual Reality Software and Technology, ACM Press, New York, 1994, pp. 223-236.
11. C. Carlsson and O. Hagsand, “DIVE—A Multi-User Virtual Reality System,” Proc. Virtual Reality Ann. Int’l Symp., IEEE Press, Piscataway, N.J., 1993, pp. 394-400.
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