OXC port dimensioning strategies in optical networks-a nodal perspective

In this letter, we investigate optical cross-connect (OXC) port dimensioning strategies for supporting bandwidth-on-demand (BoD) services in optical networks. At a given node, the bandwidth-on-demand traffic load consists of two components; an access component, which is generated by demands originating at that node, and a transit component, which is generated by demands that transit electronically through the node. Given the BoD load at a node, as well as a target BoD average blocking probability, we calculate the optimal static allocation of the OXC ports between client-side ports and network-side ports. We also introduce a dynamic sharing strategy of the network-side ports and propose a method for determining the optimal port allocation under this strategy.