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IEICE TRANSACTIONS on Communications

Optical WDM Multicasting Design under Wavelength Conversion Constraints

Hiroaki HONDA, Hideki TODE, Koso MURAKAMI

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Summary :

In the next-generation networks, ultra high-speed data transmission will become necessary to support a variety of advanced point-to-point and multipoint multimedia services with stringent quality-of-service (QoS) constraints. Such a requirement desires the realization of optical WDM networks. Researches on multicast in optical WDM networks have become active for the purpose of efficient use of wavelength resources. Since multiple channels are more likely to share the same links in WDM multicast, effective routing and wavelength assignment (RWA) technology becomes very important. The introduction of the wavelength conversion technology leads to more efficient use of wavelength resources. This technology, however, has problems to be solved, and the number of wavelength converters will be restricted in the network. In this paper, we propose an effective WDM multicast design method on condition that wavelength converters on each switching node are restricted, which consists of three separate steps: routing, wavelength converter allocation, and wavelength assignment. In our proposal, preferentially available waveband is classified according to the scale of multicast group. Assuming that the number of wavelength converters on each switching node is limited, we evaluate its performance from a viewpoint of the call blocking probability.

Publication
IEICE TRANSACTIONS on Communications Vol.E88-B No.5 pp.1890-1897
Publication Date
2005/05/01
Publicized
Online ISSN
DOI
10.1093/ietcom/e88-b.5.1890
Type of Manuscript
Special Section PAPER (Joint Special Section on Recent Progress in Optoelectronics and Communications)
Category
Optical Network Architecture

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