联合无线网络编码与TCP Vegas的多播协议优化研究  

Research on multicast routing optimization for the wireless network coding combine with TCP Vegas

作　　者：徐斌[1] 季敏[1] 谭国平 

机构地区：[1]河海大学计算机与信息学院通信与信息系统研究所,江苏南京210098

出　　处：《电子设计工程》2014年第15期74-77,共4页Electronic Design Engineering

摘　　要：为解决移动自组网中网络编码多播路由协议因业务传输负载增大,而产生的网络拥塞现象,本文提出了一种可靠的基于TCP Vegas窗口拥塞控制的网络编码多播路由协议。该协议的核心思想是发送节点采用发送窗口自调整和反馈消息触发发送窗口调整的机制,综合的调节数据包的发送速率,来改善网络拥塞现象,从而可以降低丢包率。仿真结果表明,当传输负载增大时,基于窗口拥塞控制的网络编码多播路由协议可使得系统的总开销大大降低,分组投递率获得了相对的提升。In order to solve the problem of the NCRM performance that is the network congestion occurring when the traffic loads sending too quickly in the mobile Ad hoc network. The article makes a mechanism of window-based TCP Vegas congestion control participate in NCRM to implement a window-based congestion control mechanism for multicast routing mechanism WCC-NCRM. The core idea in protocol is that the sending node comprehensive adjustment the sending speed of packets accord to the mechanism of send-window adjustment itself and feedback message triggering window adjustment,which also improve the defect of network congestion, thereby possibly reducing packet drop rate. The simulations reveal that the packet delivery ratio and total overhead of WCC-NCRM are superior to NCRM.

关 键 词：网络编码 拥塞控制 分组投递率 总开销 

分 类 号：TN925[电子电信—通信与信息系统]