NDLI: A new method for solving routing and wavelength assignment problems under inaccurate routing information in optical networks with Conversion Capability

Content Provider	IEEE Xplore Digital Library
Author	Yanting Luo Yongjun Zhang Wanyi Gu
Copyright Year	2009
Description	Author affiliation: Key Laboratory of Optical Communication and Lightwave Technologies, Ministry of Education, Beijing University of Posts and Telecommunications, 100876, China (Yanting Luo; Yongjun Zhang; Wanyi Gu)
Abstract	In large dynamic networks it is extremely difficult to maintain accurate routing information on all network nodes. The existing studies have illustrated the impact of imprecise state information on the performance of dynamic routing and wavelength assignment (RWA) algorithms. An algorithm called Bypass Based Optical Routing (BBOR) proposed by Xavier Masip-Bruin et al can reduce the effects of having inaccurate routing information in networks operating under the wavelength-continuity constraint. Then they extended the BBOR mechanism (for convenience it's called EBBOR mechanism below) to be applied to the networks with sparse and limited wavelength conversion. But it only considers the characteristic of wavelength conversion in the step of computing the bypass-paths so that its performance may decline with increasing the degree of wavelength translation (this concept will be explained in the section of introduction again). We will demonstrate the issue through theoretical analysis and introduce a novel algorithm which modifies both the lightpath selection and the bypass-paths computation in comparison to EBBOR algorithm. Simulations show that the Modified EBBOR (MEBBOR) algorithm improves the blocking performance significantly in optical networks with Conversion Capability.
Starting Page	1
Ending Page	8
File Size	332208
Page Count	8
File Format	PDF
ISBN	9781557528773
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-11-02
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	OSA
Subject Keyword	Optical networks Base stations Wavelength assignment Routing and wavelength assignment Standardization Optical fiber networks Optical receivers Optical fiber communication Optical fiber subscriber loops Passive optical networks Wavelength routing Wavelength conversion
Content Type	Text
Resource Type	Article

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