Virtual environments (VEs) are a broad multidisciplinary research area that includes all aspects of computer science, virtual reality, virtual worlds, teleoperation and telepresence. A variety of network elements are required to scale up virtual environments to arbitrarily large sizes, simultaneously connecting thousands of interacting players and all kinds of information objects. Four key communications components for virtual environments are found within the Internet Protocol (IP) suite: light-weight messages, network pointers, heavy-weight objects and real-time streams. Software and hardware shortfalls and successes for internetworked virtual environments provide specific research conclusions and recommendations. Since large-scale networked are intended to include all possible types of content and interaction, they are expected to enable new classes of interdisciplinary research and sophisticated applications that are particularly suitable for implementation using the Virtual Realit...
Donald P. Brutzman, Michael R. Macedonia, Michael