IPTV性能测量系统的设与实现-计算机科学与技术专业毕业论文.docx

IPTV测量系统的设计与实现 THE DESIGN AN门D INⅡ’LEN匝NT OF IPTV PERFORMANCE MEASl瓜MENT SYSTEM ABSTRACT The Interact is making impact on people’S lives in all unprecedented manner and strength．Among them，IPTV is all attractive technology．To provide good IPTV services，corresponding performance measurement system is needed to monitor and manage the IPTV system and its carrying network． The special nature of IPTV is not considered in traditional network measurement technologies，SO there are some flaws of these measurements．ThiS paper presents an IPTV measurement system framework embedded with a real playing environment．Because real streaming media are applied，measurement results become more accurate．T11e measurement system also analysis the decoding process， makes the measurement parameters more comprehensive． The flexibility iS a major consideration in the design phase． Stratified system design gives the system the characteristics of cross—platform and cross-IP protocol version，which make the system very easy to deploy and operation．Loosed design gives the system the ability to support peer-to-peer mode measurement，point-to—multipoint measurement，and new measurement models such as multi—Jump measurement．砀e use of FFMPEG and SDL library on the one hand can simplify the development workload；on the other hand allow the system to support various video encoding． This paper first analyzed the current status and the application of IPTV，indicates that the IPTV performance measurement system iS of great importance．Then，the main techniques relied by IPTV were introduced，including video codec technology and network measurement technology．Next，the system architecture and application scenarios are analyzed．Performance measurement III  IPTV测量系统的设计与实现 parameters are also listed here．Subsequently，all the subsystems and the Interactivities and collaborations of subsystems al e carefully designed．Based on the design，this paper discussed the implementation of the system，including details of the