Converter placement supporting broadcast in WDM optical networks

	Converter placement supporting broadcast in WDM optical networks
	Ruan, L ; Du, DZ ; Hu, XD ; Jia, XH ; Li, DY ; Sun, Z
刊名	IEEE TRANSACTIONS ON COMPUTERS
	2001-07-01
卷号	50 期号:7 页码:750-758
关键词	network optimization optical networks WDM converter placement Color-Covering Vertex Color-Covering
ISSN号	0018-9340
英文摘要	Given a WDM optical network with wavelength channels on its fiber links, we consider the problem of finding the minimum set of network nodes such that, with wavelength converters at these nodes, broadcast can be supported in the network. We call this problem the Converter Placement problem. We model a given network using a graph G with colors on its edges and give a mathematical formulation for the problem based on the graph model. Two related problems, Color-Covering and Vertex Color-Covering, are given and analyzed. Both of them are shown to have a polynomial-time approximation with performance ratio In n + 1 and Inn is the best possible performance ratio unless NP subset of DTIME(n(polylogn)), where n is the number of vertices in G. Using these results, we show that the Converter Placement problem has a polynomial-time approximation with performance ratio 2(ln n + 1) and (1)/(2)ln n is the best possible performance ratio unless NP subset of DTIME(n(polylogn)). We present an approximation algorithm to solve the Converter Placement problem and study the performance of the algorithm on randomly generated network topologies.
WOS研究方向	Computer Science ; Engineering
语种	英语
出版者	IEEE COMPUTER SOC
WOS记录号	WOS:000169945400011
内容类型	期刊论文
源URL	[http://ir.amss.ac.cn/handle/2S8OKBNM/16668]
专题	中国科学院数学与系统科学研究院
通讯作者	Ruan, L
作者单位	1.Univ Minnesota, Dept Comp Sci & Engn, Minneapolis, MN 55455 USA 2.Chinese Acad Sci, Inst Appl Math, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Appl Math, Beijing, Peoples R China 4.City Univ Hong Kong, Dept Comp Sci, Kowloon, Hong Kong, Peoples R China 5.Shandong Univ, Sch Math & Syst Sci, Jinan 250100, Peoples R China
推荐引用方式 GB/T 7714	Ruan, L,Du, DZ,Hu, XD,et al. Converter placement supporting broadcast in WDM optical networks[J]. IEEE TRANSACTIONS ON COMPUTERS,2001,50(7):750-758.
APA	Ruan, L,Du, DZ,Hu, XD,Jia, XH,Li, DY,&Sun, Z.(2001).Converter placement supporting broadcast in WDM optical networks.IEEE TRANSACTIONS ON COMPUTERS,50(7),750-758.
MLA	Ruan, L,et al."Converter placement supporting broadcast in WDM optical networks".IEEE TRANSACTIONS ON COMPUTERS 50.7(2001):750-758.