Bandwidth allocation based on priority and excess-bandwidth-utilized algorithm in WDM/TDM PON

被引：21
|
作者：
Ni, Cuiping [1 ]
Gan, Chaoqin [1 ]
Li, Wei [1 ]
Chen, Haibin [1 ]
机构：
[1] Shanghai Univ, Key Lab Specialty Fiber Opt & Opt Access Networks, Shanghai 200072, Peoples R China
来源：
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS | 2015年 / 69卷 / 11期
基金：
上海市科技启明星计划;
关键词：
Excess bandwidth allocation; Load; Priority; Wavelength domain; WDM/TDM PON; DYNAMIC WAVELENGTH; PERFORMANCE; SCHEME; QOS;
D O I：
10.1016/j.aeue.2015.07.020
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
WDM/TDM passive optical network (PON) is being viewed as a promising solution for delivering multiple services and applications, such as high-definition video, video conference and data traffic. This paper introduces a novel bandwidth allocation scheme to efficiently utilize the bandwidth and support QoS (Quality of Service) guarantees in WDM/TDM PON. We develop the priority-based transmission windows and investigate the fair bandwidth allocation by using linearly proportional algorithm. Specially, the proposed scheme can increase the bandwidth-utilized rate (BUR) by collecting and allocating the excess bandwidths from both light-loaded ONUs (time domain) and wavelength domain. Besides, the performance of delay-sensitive services is greatly improved without degrading QoS guarantees for other services due to our priority-based scheme. Finally, we conduct detailed simulation experiments to research the performance and demonstrate the effectiveness of the proposed scheme. (c) 2015 Elsevier GmbH. All rights reserved.
引用
收藏
页码：1659 / 1666
页数：8
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