基于临时服务器的通信模式研究

发布时间：2018-08-15 15:27

【摘要】：随着三维互联网技术（Web3D）与分布式虚拟环境技术（DVE）的发展，三维虚拟世界以其更强的真实感与沉浸感，以及更好的交互性被越来越多的人认可。人们参与到三维虚拟世界中，自由的进行交流、合作、竞争，以及从事娱乐等活动。目前基于三维技术的分布式虚拟环境的应用主要体现在仿真、3D游戏等方面。由于三维环境中需要传输的信息很多，当用户越来越多时，系统的通信负载急剧上升，，可能会超过系统的承载能力，导致系统的性能下降。因此深入研究分布式三维虚拟世界中服务器的负载优化与可扩充性具有重大意义。首先，本文研究分析了分布式三维虚拟世界中服务器通信负载相关的优化方法，包括面向客户端的网络同步模型、基于临时服务器的动态DVE结构；针对面向客户端的网络同步模型中性能差的客户端可能无法完成通信的问题，提出了面向客户端的通信模式；针对基于临时服务器的动态DVE结构中临时服务器退出时下级客户端迁移的问题，提出了基于临时服务器的通信模式；并对提出的两种通信模式进行了分析比较。其次，对基于临时服务器的通信模式进行了分析，详细描述了其整体框架、流程等；对临时服务器选择、临时服务器加入与退出、临时服务器负载均衡以及UDP通信四个组成模块的功能给出了一种设计方法；并提出一种平均标准配置算法，根据客户端计算机的硬件资源及使用率，综合考虑得出该客户端被选为临时服务器的可能性。最后，本文设计了基于临时服务器的信息收发系统，验证了基于临时服务器的通信模式具有可行性。
[Abstract]:With the development of 3D Internet technology (Web3D) and distributed virtual environment (DVE), 3D virtual world is recognized by more and more people because of its stronger sense of reality and immersion, and better interaction. People participate in three-dimensional virtual world, free communication, cooperation, competition, entertainment and other activities. At present, the application of distributed virtual environment based on 3D technology is mainly reflected in the simulation of 3D games. Because there is a lot of information to be transmitted in 3D environment, the communication load of the system will rise sharply when more and more users are used, which may exceed the carrying capacity of the system and lead to the degradation of system performance. Therefore, it is of great significance to study the load optimization and scalability of servers in the distributed 3D virtual world. Firstly, this paper studies and analyzes the optimization methods of server communication load in distributed 3D virtual world, including the client-oriented network synchronization model and the dynamic DVE structure based on temporary server. Aiming at the problem that the poor client may not be able to complete the communication in the client-oriented network synchronization model, a client-oriented communication mode is proposed. Aiming at the problem of client migration at lower level when temporary server exits in dynamic DVE architecture based on temporary server, the communication mode based on temporary server is proposed, and the two communication modes are analyzed and compared. Secondly, the communication mode based on temporary server is analyzed, and its whole frame and flow are described in detail. This paper presents a design method of the temporary server load balance and the functions of the four components of UDP communication, and proposes an average standard configuration algorithm, which is based on the hardware resources and utilization rate of the client computer. Consider the possibility that the client will be selected as a temporary server. Finally, this paper designs an information transceiver system based on temporary server, and verifies the feasibility of communication mode based on temporary server.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP368.5

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