Sparse placement of wavelength convertible 3r regenerators and joint resource assignment in large-scale optical networks

Xin Wang, Filippos Balasis, Sugang Xu, Yoshiaki Tanaka

    Research output: Contribution to journalArticle

    Abstract

    It is believed that the wavelength switched optical network (WSON) technology is moving towards being adopted by large-scale networks. Wavelength conversion and signal regeneration through reamplifying, reshaping, and retiming (3R) are beneficial to support the expansion of WSON. In many cases, these two functions can be technically integrated into a single shared physical component, namely the wavelength convertible 3R regenerator (WC3R). However, fully deploying such devices is infeasible due to their excessive cost. Thus, this topic serves as a motivation behind the investigation of the sparse placement issue ofWC3Rs presented in this paper. A series of strategies are proposed based on knowledge of the network. Moreover, a novel adaptive routing and joint resource assignment algorithm is presented to provision the lightpaths in WSON with sparsely placed WC3Rs. Extensive simulation trials are conducted under even and uneven distribution of WC3R resource. Each strategic feature is examined for its efficiency in lowering the blocking probability. The results reveal that carefully designed sparse placement of WC3Rs can achieve performance comparable to that of full WC3R placement scenario. Furthermore, the expenditure of WC3R deployment also depends on the type of used WC3Rs characterized by the wavelength convertibility, i.e., fixed WC3R or tunable WC3R. This paper also investigates WSON from the perspective of cost and benefit by employing different types of WC3Rs in order to find the possibility of more efficient WC3R investment.

    Original languageEnglish
    Pages (from-to)1845-1856
    Number of pages12
    JournalIEICE Transactions on Communications
    VolumeE96-B
    Issue number7
    DOIs
    Publication statusPublished - 2013 Jul

    Fingerprint

    Regenerators
    Fiber optic networks
    Wavelength
    Switching networks
    Optical frequency conversion
    Blocking probability
    Costs

    Keywords

    • 3R regeneration
    • Assignment
    • Benefit
    • Conversion
    • Cost
    • Network
    • Optical
    • Placement
    • Routing
    • Wavelength

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Computer Networks and Communications
    • Software

    Cite this

    Sparse placement of wavelength convertible 3r regenerators and joint resource assignment in large-scale optical networks. / Wang, Xin; Balasis, Filippos; Xu, Sugang; Tanaka, Yoshiaki.

    In: IEICE Transactions on Communications, Vol. E96-B, No. 7, 07.2013, p. 1845-1856.

    Research output: Contribution to journalArticle

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