Study of re-provisioning mechanism for dynamic traffic in WDM optical networks

Abstract

In centralized-controlled WDM network, the traffic request arrived at the control node will be blocked if the lightpath is failed to be established, and the blocked request will not be issued afterward. In this paper we consider the second time successful ratio of provisioning for the requests which are blocked in first try phase. By recording the minimum shared resource in the wavelength-link table used for survivable routing, the second-tried traffic will have larger successful opportunity to be established. The mechanisms to implement such strategy will be proposed and the performance improvement will be verified by conducted simulations under several assumptions.

Phase-Type Arrivals and Impatient Customers in Multiserver Queue with Multiple Working Vacations

“…In communication systems, wavelength division multiplexing (WDM) is a method of transmitting packets from different sources, over the same fiber optic link, to the destination. A WDM network divides the available fiber bandwidth into WDM channels, details in Ho and Woei [18] and also in Wang [19]. This division of bandwidth or channel allocation is based on the capacities required for various services.…”