Cyclic polling-based dynamic wavelength and bandwidth allocation in wavelength division multiplexing passive optical networks

被引：0
|
作者：
谢正程 [1 ]
李慧 [1 ]
纪越峰 [1 ]
机构：
[1] Key Laboratory of Optical Communication and Lightwave Technologies,Ministry of Education, Beijing University of Posts and Telecomnunications
来源：
ChineseOpticsLetters | 2009年 / 7卷 / 04期
基金：
中国国家自然科学基金;
关键词：
ONU; Cyclic polling-based dynamic wavelength and bandwidth allocation in wavelength division multiplexing passive optical networks; IPACT; WDM; OLT; PON;
D O I：
暂无
中图分类号：
TN929.1 [光波通信、激光通信];
学科分类号：
0803 ;
摘要：
Cyclic polling-based dynamic wavelength and bandwidth allocation algorithm supporting differentiatedclasses of services in wavelength division multiplexing (WDM) passive optical networks (PONs) is proposed.In this algorithm,the optical line terminal (OLT) polls for optical network unit (ONU) requests to transmitdata in a cyclic manner.Services are categorized into three classes:expedited forward (EF) priority,assuredforwarding (AF) priority,and best effort (BE) priority.The OLT assigns bandwidth for different prioritieswith different strategies.Simulation results show that the proposed algorithm saves a lot of downstreambandwidth under low load and does not show the light-load penalty compared with the simultaneous andinterleaved polling schemes.
引用
收藏
页码：344 / 347
页数：4
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