Fragment fusion degree based dynamic defragmentation in flexible grid   optical networks

doi:10.1016/j.ijleo.2013.03.135

CORC > 北京大学 > 信息科学技术学院

	Fragment fusion degree based dynamic defragmentation in flexible grid optical networks
	Ju, Weiguo ; Huang, Shanguo ; Guo, Bingli ; Xu, Zhenzhen ; He, Yongqi ; Zhang, Jie ; Gu, Wanyi
刊名	optik
	2013
关键词	Flexible grid optical networks Spectrum defragmentation Fragment fusion degree (FFD)
DOI	10.1016/j.ijleo.2013.03.135
英文摘要	Flexible grid optical networks have been attracting much attention for their high spectrum efficiency (SE) and flexibility compared to the rigid grid WDM networks. As well known, the networks suffer from the problem of spectrum fragmentation under dynamic traffic. In this paper, we propose a new concept called 'fragment fusion degree (FED)' to assess the level of spectrum fragmentation in flexible grid optical networks, which is calculated based on the availability of the spectrum fragments among neighboring links. Two FFD based dynamic defragmentation algorithms are presented to fuse the spectrum fragments among neighboring links. Simulation results show that the proposed defragmentation algorithms reduce blocking probability significantly and achieve high profitability. (C) 2013 Elsevier GmbH. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000325835400050&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Optics; SCI(E); EI; 0; ARTICLE; 22; 5507-5512; 124
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/227475]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Ju, Weiguo,Huang, Shanguo,Guo, Bingli,et al. Fragment fusion degree based dynamic defragmentation in flexible grid optical networks[J]. optik,2013.
APA	Ju, Weiguo.,Huang, Shanguo.,Guo, Bingli.,Xu, Zhenzhen.,He, Yongqi.,...&Gu, Wanyi.(2013).Fragment fusion degree based dynamic defragmentation in flexible grid optical networks.optik.
MLA	Ju, Weiguo,et al."Fragment fusion degree based dynamic defragmentation in flexible grid optical networks".optik (2013).