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—Through the use of configurable wavelength-division -multiplexing (WDM) technology including tunable optical transceivers and frequency selective switches, next-generation WDM networks will allow multiple virtual topologies to be dynamically established on a given physical topology. For node port networks, we determine the number of wavelengths required to(More)
The problem of minimizing the number of bidirectional SONET rings required to support a given traffic demand has been studied by several researchers. Here we study the related problem of minimizing the number of add/drop locations instead of the number of rings; in a number of situations this is a better approximation to the true equipment cost. Our main(More)
Traffic grooming is applied to WDM optical networks with the intent of provisioning lower rate connection requests onto lightpaths with higher rate. Traffic grooming problem is an optimization problem which mainly focuses on minimization of network cost through minimizing the devices used in the network. Our work focuses on dynamic traffic grooming with(More)
We introduce the minimum energy path planning (MEPP) problem of finding a path for a mobile node traveling from a source to a destination while communicating with at least one node from a set of stationary nodes in such a way that minimizes the transmission energy used in communication. We characterize this problem and introduce the discretized graph(More)
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