NOMaD: AN OPTICAL NETWORK OPTIMISATION, MODELLING AND DESIGN TOOLSET
نویسنده
چکیده
TOOLSET M. C. Sinclair Introduction In recent years there has been a growing interest in the potential of multiwavelength all-optical transport networks to provide the huge bandwidth necessary if broadband services are widely adopted. As part of this e ort, this paper provides an overview of a toolset for optical network optimisation, modelling and design (NOMaD) [1, 2]. The toolset is used as part of the author's research into the application of genetic-algorithm (GA)/heuristic hybrid optimisation techniques to optical network design, as well as in several research projects. These include two under the European Commission funded research programme in Advanced Communications Technologies and Services (ACTS): WOTAN (Wavelengthagile Optical Transport and Access Network) and OPEN (Optical Pan-European Network); and the Fujitsu Telecommunications Europe Ltd. \Future Broadband Networks" project. Recent results using GA/heuristic hybrids for the design of multi-wavelength all-optical transport networks are described, including both topology [3], and routing, bre and wavelength allocation [4, 5]. Overall architecture NOMaD has been developed as an overall architecture to be extended by several people in a variety of directions to serve the needs of their individual projects [1]. Consequently, its users have not just been given a single unchangeable piece of software, but rather a framework which they can actively add to for themselves. As a result, NOMaD has had to be easy to understand, exible and extensible. The overall layered architecture is shown in Fig. 1. To aid both understanding and extensibility, the toolset has been devel-
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