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In this paper two novel mathematical methods for network-wide blocking probability evaluation of end-to-end optical burst switching (OBS) networks with heterogeneous ON-OFF traffic are presented. By heterogeneous traffic we mean that the traffic generated by different source-destination pairs might exhibit different values of offered traffic load. Unlike most previous works, which assume a Poisson...
In this paper, we study the waveband switching technique in WDM optical networks and propose a novel Routing Algorithm based on Integrated Auxiliary Graph (RAIAG) to save the switching ports in optical cross-connect. The IAG is compared of the single virtual topology layer and multiple waveband-plane layers, and it can well solve the problem of routing and waveband assignment. In RA-IAG, we use the...
The need for survivability in optical networks is becoming more and more important because of the huge amount of aggregated traffic that is carried in an optical network. A number of protection schemes have been proposed for mesh networks, where their main objective is to provide a network that can restore a failure quickly and efficiently via a simple automated system. In this paper, we review and...
Although many multicast routing algorithms have been proposed in order to reduce the total cost in WDM optical networks, the link stress and delay are two parameters which are not always taken into consideration. This paper proposes a novel wavelength routing algorithm, which tries to avoid the multicast incapable branching nodes (MIB, branching nodes without splitting capability) to diminish the...
Bandwidth requirements of the Internet are increasing every day. Wavelength division multiplexing (WDM) is the next step towards leveraging the capabilities of the optical fiber, especially for wide area backbone networks. Reconfiguration is a characteristic of WDM optical networks that allows network operators to arrange the networks in response to the changing traffic demands. As a general assumption,...
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