电子学报 ›› 2016, Vol. 44 ›› Issue (2): 398-404.DOI: 10.3969/j.issn.0372-2112.2016.02.022

• 学术论文 • 上一篇    下一篇

TWDM-PON中用户行为感知的动态资源分配策略

熊余, 唐剑波, 张鸿, 吕翊   

  1. 重庆邮电大学光纤通信技术重点实验室, 重庆 400065
  • 收稿日期:2014-06-19 修回日期:2014-09-23 出版日期:2016-02-25 发布日期:2016-02-25
  • 作者简介:熊余 男,1982年生于四川资中.重庆邮电大学副研究员.研究方向为下一代无源光网络的服务质量控制和绿色节能技术、全光网络的故障管理技术.E-mail:xiongyu@cqupt.edu.cn;唐剑波 男,1990年生于四川威远.硕士研究生,研究方向为基于混合接入的无源光网络动态资源分配机制研究.
  • 基金资助:

    国家自然科学基金(No.61401052);重庆市自然科学基金重点项目(No.CSTC2011BA2041);重庆市教委科学技术研究项目(No.KJ1400418);重庆市高校优秀人才支持计划(No.2011-29)

User-Behavior Aware Dynamic Resource Allocation Strategy in TWDM-PON

XIONG Yu, TANG Jian-bo, ZHANG Hong, LÜ Yi   

  1. Key Laboratory of Optical Fiber Communication, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
  • Received:2014-06-19 Revised:2014-09-23 Online:2016-02-25 Published:2016-02-25

摘要:

TWDM-PON是下一代光接入网的主流方案,具有带宽高、距离长、用户多等特点.针对用户行为差异性增大的问题,为有效降低网络时延及提升资源分配的公平性,提出一种用户行为感知的动态资源分配策略.根据用户行为带来的业务动态变化状况,动态调整ONU的轮询机制以满足用户服务水平变化要求,并划分子周期交替发送不同等级的业务,设计高效的数据块加载方法来实现负载均衡的多波长传输.仿真结果表明,与传统策略相比,所提策略在保证资源利用率高达95%的同时,既使业务平均时延改善50%以上,也使资源分配具有更好的公平性.

关键词: TWDM-PON, 动态资源分配, 用户行为, 资源利用率, 业务时延, 公平性

Abstract:

As a mainstream solution for next generation optical access network, the TWDM-PON has the characteristics of high bandwidth, long distance, numerous access users etc.In order to effectively reduce the network delay and promote the fairness of resource allocation, an user-behavior aware dynamic resource allocation strategy is proposed for adapting to the increasing differences of user-behaviors in TWDM-PON.According to the dynamic traffic status brought by user-behaviors, the ONU polling mechanism is adjusted in real-time to satisfy the requirements of ONU service level.And the introduction of traffic sub-cycle can make the different grade service alternately send.Finally, for achieving multi-wavelength transmission of load balance, an efficient data block loading mechanism is designed.The simulation results show that the proposed strategy can reduce packet delay more than 50% and keep better fairness during resource allocation, while the utilization rate of network resource can reach 95%.

Key words: TWDM-PON, dynamic resource assignment, user-behaviors, bandwidth utilization, traffic delay, fairness

中图分类号: