当前,中国广电正在努力提升自己在媒体领域和通信市场的竞争力。为支撑业务发展,广电接入网将逐步从多方案统一到光纤到户(Fibre To The Home,FTTH)无源光网络(Passive Optical Network,PON)的路线上。同时,在数据流量持续增长的趋势下...当前,中国广电正在努力提升自己在媒体领域和通信市场的竞争力。为支撑业务发展,广电接入网将逐步从多方案统一到光纤到户(Fibre To The Home,FTTH)无源光网络(Passive Optical Network,PON)的路线上。同时,在数据流量持续增长的趋势下,广电接入网的部署既要满足现在的客户需求,更要前瞻布局未来。吉比特无源光网络(Gigabit Passive Optical Network,GPON)和非对称10G GPON(10-Gigabit Passive Optical Network,XG-PON)技术基于带宽、覆盖范围、服务质量以及技术升级等优势,在广电接入网的发展中具备应用潜力。基于此,介绍、分析GPON和XG-PON技术,借鉴其他三个运营商的接入网部署经验,为广电接入网的发展提供一定参考。展开更多
This article analyzes the characteristics of PON and WiMAX convergence network planning.Based on user coverage ratio,WiMAX channel allocation,cell radius,carrier-to-noise ratio threshold,and bandwidth constraint,we pr...This article analyzes the characteristics of PON and WiMAX convergence network planning.Based on user coverage ratio,WiMAX channel allocation,cell radius,carrier-to-noise ratio threshold,and bandwidth constraint,we propose a mixed integer programming model solved by a Branch-Band and Heuristic Search method.Finally,the simulation result is given and analyzed.The planning method based on a mixed integer programming model can save 20 percentage of the overall planning cost,compared with the greedy algorithm.The relationship between the convergence network planning cost and frequency usage is also analyzed.The optimized planning result with the lowest cost can be acquired through the best frequency usage.展开更多
随着行业数字化转型驱动网络升级、宽带普及率的提高和宽带提速的深入,千兆光网络从消费领域向垂直行业领域延伸,满足千行百业数字化转型对光接入网络的新需求成为现阶段的重点。作为下一代的光接入网系统,50 G PON技术成为当今通信行...随着行业数字化转型驱动网络升级、宽带普及率的提高和宽带提速的深入,千兆光网络从消费领域向垂直行业领域延伸,满足千行百业数字化转型对光接入网络的新需求成为现阶段的重点。作为下一代的光接入网系统,50 G PON技术成为当今通信行业中千兆光网演进的热点。文章结合运营商及行业数字化转型发展特征,浅析50 G PON的承载特性和应用,并在此基础上分析50G P ON现网试点情况。展开更多
基金supported by National High Technical Research and Development Program of China(863 program)under Grant No.2009AA01A345Fundamental Research Funds for the Central Universities under Grant No.BUPT2009RC0402
文摘This article analyzes the characteristics of PON and WiMAX convergence network planning.Based on user coverage ratio,WiMAX channel allocation,cell radius,carrier-to-noise ratio threshold,and bandwidth constraint,we propose a mixed integer programming model solved by a Branch-Band and Heuristic Search method.Finally,the simulation result is given and analyzed.The planning method based on a mixed integer programming model can save 20 percentage of the overall planning cost,compared with the greedy algorithm.The relationship between the convergence network planning cost and frequency usage is also analyzed.The optimized planning result with the lowest cost can be acquired through the best frequency usage.
文摘随着行业数字化转型驱动网络升级、宽带普及率的提高和宽带提速的深入,千兆光网络从消费领域向垂直行业领域延伸,满足千行百业数字化转型对光接入网络的新需求成为现阶段的重点。作为下一代的光接入网系统,50 G PON技术成为当今通信行业中千兆光网演进的热点。文章结合运营商及行业数字化转型发展特征,浅析50 G PON的承载特性和应用,并在此基础上分析50G P ON现网试点情况。