Philip J. Lin

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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)
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)
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)
This disquisition presents a energy consumption in a network which is a important physical factor against this everlasting increase in network traffic. Since current equipment in network consumes energy inefficiently due to poor energy load proportionality we have modeled a packet optical transport networks. By employing integer linear programming (ILP), we(More)
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