基于自相似的IP视频广播网络性能分析  

Network Performance Analysis of IP Video Broadcast Based on Self-similar

作　　者：朱正国 王春华[1] 

机构地区：[1]上海大学特种光纤与光接入网重点实验室

出　　处：《工业控制计算机》2019年第7期65-67,共3页Industrial Control Computer

基　　金：国家自然科学基金(61575118)资助

摘　　要：现有的E/GPON系统难以满足未来超高清视频业务带宽需求。针对此问题,提出了通过在E/GPON系统中叠加高速单向IP视频广播(IPVB)通道的IPVB+E/GPON技术。通过建立基于分形布朗运动的用户自相似业务模型,对提出的IPVB+E/GPON系统的网络性能进行了仿真分析。仿真结果表明,通过IPVB承载一定的视频流可以大大缓解高峰时段E/GPON下行带宽不足的问题。同时与10GPON相比,IPVB+E/GPON可以实现相同的网络性能,并具有显著的成本优势和良好的可扩展性。This paper proposes the technology of adding high-speed unidirectional IP video broadcast(IPVB) channels in the E/GPON system,and analyzes the network performance of the proposed system by establishing a user self-similar service model based on fractal Brownian motion.The simulation results show that the system can greatly alleviate the problem of insufficient E/GPON downlink bandwidth during peak hours by carrying a certain video stream through IPVB.Compared with 10 G PON,the proposed system can achieve the same network performance and has significant cost advantages and good scalability.

关 键 词：IP视频广播 GPON 10G PON 自相似业务 

分 类 号：TN93[电子电信—信号与信息处理]