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Optimization of wavelength assignment for QoS multicast in WDM networks
Jia, XH; Du, DZ; Hu, XD; Lee, MK; Gu, J
2001-02-01
发表期刊IEEE TRANSACTIONS ON COMMUNICATIONS
ISSN0090-6778
卷号49期号:2页码:341-350
摘要This paper discusses quality-of-service (QoS) multicast in wavelength-division multiplexing (WDM) networks. Given a set of QoS multicast requests, we are to find a set of cost suboptimal QoS routing trees and assign wavelengths to them. The objective is to minimize the number of wavelengths in the system. This is a challenging issue. It involves not only optimal QoS multicast routing, but also the optimal wavelength assignment. Existing methods consider channel setup in WDM networks in two separate steps: routing and wavelength assignment, which has limited power in minimizing the number of wavelengths. In this paper, we propose a new optimization method, which integrates routing and wavelength assignment in optimization of wavelengths. Two optimization algorithms are also proposed in minimizing the number of wavelengths. One algorithm minimizes the number of wavelengths through reducing the maximal link load in the system; while the other does it by trying to free out the least used wavelengths. Simulation results demonstrate that the proposed algorithms can produce suboptimal QoS routing trees and substantially save the number of wavelengths.
关键词light-tree QoS multicast routing wavelength assignment WDM network
语种英语
WOS研究方向Engineering ; Telecommunications
WOS类目Engineering, Electrical & Electronic ; Telecommunications
WOS记录号WOS:000167225900017
出版者IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
引用统计
文献类型期刊论文
条目标识符http://ir.amss.ac.cn/handle/2S8OKBNM/16527
专题应用数学研究所
通讯作者Jia, XH
作者单位1.City Univ Hong Kong, Dept Comp Sci, Kowloon, Hong Kong, Peoples R China
2.Univ Minnesota, Dept Comp Sci, Minneapolis, MN 55455 USA
3.Chinese Acad Sci, Inst Appl Math, Beijing 100080, Peoples R China
4.Hong Kong Univ Sci & Technol, Dept Comp Sci, Kowloon, Hong Kong, Peoples R China
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GB/T 7714
Jia, XH,Du, DZ,Hu, XD,et al. Optimization of wavelength assignment for QoS multicast in WDM networks[J]. IEEE TRANSACTIONS ON COMMUNICATIONS,2001,49(2):341-350.
APA Jia, XH,Du, DZ,Hu, XD,Lee, MK,&Gu, J.(2001).Optimization of wavelength assignment for QoS multicast in WDM networks.IEEE TRANSACTIONS ON COMMUNICATIONS,49(2),341-350.
MLA Jia, XH,et al."Optimization of wavelength assignment for QoS multicast in WDM networks".IEEE TRANSACTIONS ON COMMUNICATIONS 49.2(2001):341-350.
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