基于部分网络编码的移动自组网实时多播协议研究  

Research on Partial Network Coding Based Real-time Multicast Protocols in Mobile Ad-Hoc Networks

作　　者：谭国平 彭新华[1] 倪新洋[1] 李岳衡[1] 

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：《微电子学与计算机》2012年第9期39-41,46,共4页Microelectronics & Computer

基　　金：国家自然科学基金项目(61001068)

摘　　要：传统网络编码可以减少数据包的转发次数,但会造成数据包较大的延时,且容易造成网络的拥塞.本文提出一种基于部分网络编码的实时多播协议——PNCRM.该协议将部分网络编码与mesh的建立结合在一起,有效地减小了端到端的延时,并且改善了网络吞吐量性能.仿真结果表明,与PUMA或基于传统网络编码的实时多播协议相比,PNCRM更好地适应接收节点较多、动态性较大的环境,且在数据包投递率及端到端的延时方面有着显著的优势.Traditional network coding can reduce forwarding times of data packets, but brings larger delay and network congestions. In this paper, a Partial Network Coding based Real-time Multieast （PNCRM） protocol is proposed for supporting real-time multicast services in Mobile Ad-hoc Networks （MANET）. This protocol combines the partial network coding with the establishment of mesh together. It can not only reduce the end-to-end delay effectively, but also improve the final throughput performance. Simulation results show that, in a wide range of scenarios with varying number of receivers and mobility, PNCRM works much better than PUMA or traditional network coding based real-time multicast protocols in terms of packet delivery ratio and end-to-end delay.

关 键 词：移动自组网 部分网络编码 实时多播 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]