现就其中组播路由协议对网络性能的影响进行了研究。
The paper performs the study on the influence of multicast route protocol on network performance.
同时，大量控制开销用于维持大规模并存的组播树，这些都导致网络性能急剧下降。
Moreover, maintaining multicast trees requires an exchange of control messages causing an important overhead. Hence, the network performance will be tremendously degraded.
网络编码是改善组播通信性能的一种新技术。
Network coding is a new technique which can improve the performance of multicast communications.
论文阐述了对虚拟现实实验环境中网络通信的研究，采用了标准的DIS协议，定义了实体数据的PDU结构，并在通信层应用组播方法，对提高网络传输的性能作了分析。
This paper introduces the research of network communication on the lab environment of virtual reality. The standard DIS protocol is adopted. The structure of PDU transmitted object data is defined.
提出了覆盖网络组播的链路压力均衡模型和组播树特征伸长度模型，用以评价覆盖网络组播协议的性能。
It is presented the stress equilibrium model and the stretch eigen-value model for evaluating the performance of overlay network multicast protocols.
在典型的组播网络系统模型基础上，对这两类协议以及一种主要的改进协议在占用网络带宽和可扩展性方面的性能特点进行了定性的分析和比较。
Qualitative analysis of these two basic protocols and a modified protocol is given to exhibit their characters in scalability and bandwidth usage on a typical multicast network model.
在典型的组播网络系统模型基础上，对这两类协议以及一种主要的改进协议在占用网络带宽和可扩展性方面的性能特点进行了定性的分析和比较。
Qualitative analysis of these two basic protocols and a modified protocol is given to exhibit their characters in scalability and bandwidth usage on a typical multicast network model.
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