分布式虚拟环境的可扩充性研究

讨论了与分布式虚拟环境系统扩充性相关的两类技术，一类是通过简单的硬件并行来实现系统扩容,典型的例子是多服务器并行分区技术。这类技术能够支持大规模的分布式虚拟环境(DVE)系统，缺点是费用太高;另一类技术试图通过减少服务器通信负载来实现系统容量的增加，主要包括感兴趣区域（AOI）技术，DR算法和组播技术。此外，还讨论了一些复合方法：如基于AOI的组播技术等。网络负载的减少意味着相同的硬件条件可以支持更大规模的客户,从而有助于解决大规模DVE系统的扩充性问题。

Scalability issues of distributed virtual environment

Two kinds of technologies about the scalability of distributed virtual environment were introduced. One tries to improve system's scalability by paralleling hardware equipments. The example is multi-server parallel partition technology. It can support a large-scale system but with high cost. The other tries to extend DVE system's scale by reducing network traffic, including AOI technology,dead-reckoning algorithm and multicast technology. With the reducing of network load,DVE system can contain more clients, which improves system scalability. As a special refine technology,a combined technology of AOI and multicast was also discussed. With all these techniques discussed in the paper, a system designer can easily construct a large-scale DVE system, which can contain hundreds and thousands users.