Dual-layer efficiency enhancement for future passive optical network

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• 作者：Yuefeng Ji ; Xiaoxiong Wang ; Shizong Zhang ; Rentao Gu…
• 关键词：passive optical network ; bandwidth efficiency ; network coding ; active queue management ; centralized control ; 022313 ; 无源光网络
带宽效率 ; 网络编码 ; 主动队列管理 ; 集中控制
• 刊名：SCIENCE CHINA Information Sciences
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：59
• 期：2
• 页码：1-13
• 全文大小：1,217 KB
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• 作者单位：Yuefeng Ji (1)
  Xiaoxiong Wang (2)
  Shizong Zhang (2)
  Rentao Gu (2)
  Tonglu Guo (1)
  Zhaozhi Ge (1)
  
  1. State Key Lab of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China
  2. Beijing Key Laboratory of Network System Architecture and Convergence, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, 100876, China
  
• 刊物类别：Computer Science
• 刊物主题：Chinese Library of Science
  Information Systems and Communication Service
  
• 出版者：Science China Press, co-published with Springer
• ISSN：1869-1919

文摘

Ever-increasing demands on bandwidth compel us to improve the bandwidth utilization of access networks. It is more important to enhance the efficiency of passive optical networks (PON) than other access technologies, as they are the primary solutions to various access scenarios. To satisfy the demands of improved bandwidth efficiency, we propose a dual-layer (data link layer and network layer) efficiency enhancement scheme for future PON system. Under this architecture, a data-link-layer flexible coding scheme is introduced to extend the downstream link throughput, and a network-layer centralized active queue management (AQM) scheme is introduced to increase bandwidth efficiency. Both of these technologies are designed to suit the future centralized cooperative control mode. The results of an experimental demonstration of the network coding PON scheme reveal the efficiency of the proposed architecture. The results of simulations show that the centralized AQM scheme has a positive influence on queuing delay and jitter. To the best of our knowledge, this is the first time that a data link layer mechanism and a network layer policy have been integrated to provide high efficiency and quality of service in access networks. Keywords passive optical network bandwidth efficiency network coding active queue management centralized control