分布式虚拟环境中环境信息动态更新研究

环境信息动态更新是分布式虚拟环境的一个主要特点，如何使环境信息更新更活跃、更反应实际情况，一直是分布式虚拟环境研究的重点。在典型的分布式交互环境中，环境信息动态更新是基于协议数据单元(PDU)，它不提供数据可靠性传输保证。如何保证分布式环境中各结点环境信息一致性，本文提出了一种信息校验和协议，它通过极少的信息传输就可保证各结点环境信息高度一致。文中定义了保证分布式环境信息动态一致性更新的协议数据单元，并在试验环境中证明了协议的可靠性。

Study of Environment Information Dynamic Update in Distributed Virtual Environment

Environment information dynamic update is the main characteristic in distributed virtual environment. How to keep environment dynamic update more active and real is an important part in studying distributed virtual environment. In a typical distributed interaction environment, environment information dynamic update is based on Protocol Data Unit (PDU), which does not guarantee reliable message transfer. How to keep environment information dynamic update consistency ? In this paper, an information check sum protocol is brought forward. Through few messages transfer, environment information consistency can be guaranteed. The PDUs involved in this protocol are defined, and reliability is tested in laboratory environment.