基于IPv6的多路并发流复合传输系统  

Composite-transmission system of multiple-concurrent flow based on IPv6

作　　者：沈以楼[1,2] 朱艳琴[1,2] 罗喜召[1,2] 

机构地区：[1]苏州大学计算机科学与技术学院,江苏苏州215006 [2]江苏省计算机信息处理技术重点实验室,江苏苏州215006

出　　处：《计算机工程与设计》2011年第10期3309-3312,3394,共5页Computer Engineering and Design

基　　金：国家自然科学基金项目(61070170);江苏省高校自然科学研究计划基金项目(08KJB520011);苏州市应用基础研究计划基金项目(SYJG09024)

摘　　要：为了研究IPTV(交互式网络电视)在下一代互联网技术中的应用,并解决其多路并发流的传输问题,设计了一个基于下一代互联网技术的IPTV直播系统。对传统的IPTV多路并发流的传输特点进行了分析,指出其低效单一的缺点。在此基础上,提出了多路并发流的复合传输子系统,并通过在Linux平台下链路层原始套接字编程实现其复合传输功能。重点研究了该复合传输子系统,并通过算法的改进和零拷贝技术的应用,进一步改进子系统的性能。通过数据对比及实验结果证明了该算法的有效性以及系统的可行性。To research the application of IPTV （interactive personality television） in the next generation of the Internet technology,and to solve the problem that its multiple-concurrent flow how to transmit, an IPTV live broadcast system based on the next generation ofthe lntemet technology is designed. Firstly,the traditional transmission characteristics oflPTV multiple-concurrent flow are analyzed.It is pointed out that the traditional transmission is inefficient and single. On this basis, the multiple-concurrent flow composite transmission subsystem is presented, and its composite transmission function is realized in the Linux platforms through link layer raw socket programming. Then the composite transmission subsystem is studied emphatically, and its performance is further improved by the improvement of the algorithm and the applications of zero copy technology. Finally through data comparison and experimental results, it is proved that the algorithm is effective, and the system is feasible.

关 键 词：下一代互联网协议 交互式网络电视 实时传输协议/实时传输控制协议 直播 零拷贝 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]