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The restoration requirements for backbone network design have historically been driven by the need to address link failures due, e.g., to accidental fiber cuts. Only in the last 5-7 years the requirements of recovery from cyber attacks induced network failures have surfaced. Both deployed and greenfield networks can benefit from systematic cyber-vulnerability and resiliency characterization which...
Mobile free space optical (FSO) links suffer from frequent link blockages due to opaque obstructions or link degradations that can result in degraded or failed networks. In this paper, a dynamic layer-1 based topology and routing control methodology is presented for assuring connectivity in networks with fragile links. Core components of this methodology are described with special emphasis on the...
Mobile free space optical (FSO) and directional RF communications links suffer from frequent link blockages due to opaque obstructions that can result in degraded or failed networks. In this paper, a methodology is presented for assuring connectivity in networks with fragile links. The frequency and duration of link blockages are characterized using modeling and emulation tools developed for realistic...
The Department of Defense (DoD) Global Information Grid (GIG) is the future information architecture for military users. The deployment of the GIG will require that performance is understood with respect to applications (service-oriented architecture), information transport, information assurance, and other attributes. This is a complex task due to the size of the GIG and its heterogeneous nature...
Unlike the fixed networks, the scenarios and field conditions for tactical networks are dynamic and hard to predict or model. This is because of the complexities and uncertainties involved in forecasting the node distribution, communications demand pattern, theater terrain characteristics, mobility of the platforms, radios and frequencies available, availability of relay and gateway nodes, presence...
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