The Unpredictable Certainty White Papers (1997) / Chapter Skim
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Internetwork Infrastructure Requirements for Virtual Environments
Internetwork Infrastructure Requirements for Virtual Environments
Pages 110-122
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From page 110... ...
Zyda Naval Postgraduate School, Monterey, California ABSTRACT Virtual environments constitute a broad multidisciplinary research area that includes all aspects of computer science, virtual reality, virtual worlds, teleoperation, and telepresence. We examine the various network elements required to scale up Equal environments to arbitrarily large sizes, connecting thousands of interactive players and all kinds of information objects.
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From page 111... ...
protocol, WWW connectivity, and multicast communications. EXISTING INFRASTRUCTURE TECHNOLOGIES Layered Models The integration of networks with large-scale virtual environments occurs by invoking underlying network functions from within applications.
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From page 112... ...
employed. Since internetvvorking considerations affect all components in a large virtual environment, additional study of network protocols and applications is highly recommended for virtual world designers.
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From page 113... ...
Dozens of additional PDU types are defined for simulation management, sensor or weapon interaction, signals, radio communications, collision detection, and logistics support. Of particular interest to virtual world designers is an open format Message PDU.
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From page 114... ...
Distribution of virtual world components using point-to-po~nt sockets can be used for tight coupling and real-t~me response of physics-based models. The DIS protocol enables efficient live interaction between multiple entities in multiple virtual worlds.
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From page 115... ...
the urgent military requirements driving the DIS standard remain narrower Man general virtual environment networking requirements. A common theme that runs through all network protocol development is that realistic testing and evaluation are essential, because the initial performance of distributed applications never matches expectations or theory.
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From page 116... ...
Finally, we expect that as the demanding banded and latency requirements of virtual environments begin to be exercised by VRME, the client-server design assumptions of the HyperText Transfer Protocol Attic w'll no longer be valid. A Virtual Reality Transfer Protocol (vrtp)
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Distributed Interactive Simulation (DIS) Protocol HARDWARE INFRASTRUCTURE NEEDS Research Testbed The National Research Council report on virtual reality (Durlach and Mavor, 1995)
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From page 118... ...
Many new projects are _ _ _ possible and likely to occur by He year 2000 if virtual environment requirements are adequately supported in the information infrastructure. Sports: Live 3D Stadium with Instrumented Players Imagine that all of the ballplayers in a sports stadium wear a small device that senses location (through the Global Positioning System or local electrical field sensing)
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From page 119... ...
Integrating the World Wide Web allows rapid access to resources distributed across the Internet. Ongoing work consists primarily of scaling up the types of interactions, datasets, and live streams that can be Coors inated within He virtual world (Bru~nan, 1994a,b)
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From page 120... ...
. ~ports: live 3n stadium With instrumented players, user chooses view, Military: 100,000-player problem; Science: virtual worlds as experimental laboratories for robots, people, and Interaction: affordable linked CAVEs for remote group interaction.
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76-82. Brutzman, Donald P., "A Virtual World for an Autonomous Underwater Vehicle," Visual Proceedings, Association for Computing Machinery (ACM)
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From page 122... ...
His research interests include multicast data networks, real-time computer graphics, and large-scale virtual environments. His leadership on the Joint Electronic Warfare Center and CENTCOM staffs was instrumental in successfully deploying and integrating advanced computers, networks, and telecommunications systems during Operations Desert Shield and Desert Storm.
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