BH RTI中可靠传输机制的研究  

Research of Reliable Transmission Mechanism in BH RTI

作　　者：刘冬梅[1,2] 周忠[1,2] 刘鹂[1,2] 吴威[1,2] 

机构地区：[1]虚拟现实技术与系统国家重点实验室北京航空航天大学,北京100083 [2]北京航空航天大学计算机学院,北京100083

出　　处：《系统仿真学报》2009年第16期5065-5071,共7页Journal of System Simulation

基　　金：国家自然科学基金(60603084);国家863计划项目(2006AA01Z331)

摘　　要：组播是大规模分布交互仿真中的主要技术之一,仿真中数据的可靠传输要求使可靠组播成为其中的重要问题。在多对多可靠组播RMMS系统研究的基础上,改进TCP单播备份机制,提出了可靠单播恢复丢失的组播备份报文的报文备份机制,消除了TCP备份带来的瓶颈,提高了可靠组播的性能。介绍了可靠组播集成到BHRTI的设计。实验结果表明,集成可靠组播的BHRTI在时延、吞吐量、多对多传输方面具有良好的性能。Multicast is one of the most important technologies in large scale distributed simulation. Due to the requirement of reliable data transmission, reliable multicast becomes a significant problem to be solved. A new method for packet backup was proposed, instead of the primary ＂TCP unicast＂ in RMMS. In the new method, reliable unicast was used to recover the multicast packets which were lost during backup period. The improvement eliminated the bottle-neck owning to TCP connections and improved the performance of RMMS. The design of integrating the improved RMMS system into BH RTI was described. Experiments and result analysis indicate that BH RTI with reliable multicast integrated performs well in latency, throughput and many-to-many transmission aspects.

关 键 词：多对多 可靠组播 报文备份 分布交互仿真 BHRTI 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]