Abstract
Advance reservation is a useful network service that can not only provide guaranteed services for network users but also allow networks to better plan their resource allocations. This paper studies advance reservation for wavelength-routed WDM networks. The focus is primarily on effective routing and wavelength assignment (RWA) solutions to supporting different types of advance reservations as well as the coexistence of both advance and immediate reservations. The paper briefly reviews related work in advance reservation, presents the potential advance reservation problems, and defines an advance reservation model for wavelength-routed WDM networks. Based on this reservation model, we develop effective RWA solutions to supporting different types of advance reservations. We also propose and discuss effective control mechanisms for supporting the coexistence of both advance and immediate reservations.
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