Optical Access Network Evolution Trends：Software Defined Optical Access Network

Rentao Gu

doi:10.11959/j.issn.1000-0801.2015271

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Optical Access Network Evolution Trends：Software Defined Optical Access Network

Optical communication and Optoelectronics | 更新时间：2024-06-05

- Optical Access Network Evolution Trends：Software Defined Optical Access Network
- Telecommunications Science Vol. 31, Issue 10, Pages: 57-65(2015)
- 作者机构：
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- DOI：10.11959/j.issn.1000-0801.2015271
  CLC：
- Published Online：2015-10，
  
  Published：20 October 2015
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Rentao Gu. Optical Access Network Evolution Trends：Software Defined Optical Access Network[J]. Telecommunications science, 2015, 31(10): 57-65.
DOI：

Rentao Gu. Optical Access Network Evolution Trends：Software Defined Optical Access Network[J]. Telecommunications science, 2015, 31(10): 57-65. DOI： 10.11959/j.issn.1000-0801.2015271.

摘要

快速增长的新型网络业务和层出不穷的网络应用场景不断对现有网络架构造成冲击，构建高速、高效的新型接入网体系成为发展的必然。首先分析了现有网络面临的挑战，指出高速带宽接入、高效资源利用、支持异构资源管控为目标的光接入网将是未来光接入网的重要演进趋势；进而回顾了接入网发展历程，描述了软件定义光接入网总体架构，在光接入网引入SDN思想和OLT池化技术，分析了灵活可编程光层、精细化流表转发、控制层虚拟化等各层次主要关键技术，给出了适用于软件定义光接入网的典型应用场景，最后预见研究和发展软件定义光接入网将对迎接当前网络挑战以及最终实现全程全网的灵活管控具有重要意义。

Abstract

The rapid growth of new services and emerging network scenarios has serious impact on the existing network infrastructure，and it is an inevitable trend to build a new，high-speed and efficient access network architecture.The challenges faced by the existing network were analyzed，and it was pointed out that high-speed broadband access，efficient resource utilization，support for heterogeneous resource control would be future trends in the evolution of optical access networks.Then the access network development was recalled，the overall architecture of software-defined optical access network was described，SDN idea and OLT pooling technology were introduced into optical access network，and the major key technologies were analyzed，including the flexible programmable optical layer techniques，fine flow table forwarding，control layer virtualization，and etc.Several typical application scenarios suitable for software-defined optical access network were also presented.All of these indicate that the research and development on software-defined optical access network will meet current challenges and ultimately be helpful to achieve the end-to-end flexible control in the entire network.

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references

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