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Elastic optical networks are prone to spectrum fragmentation, resulting in poor resource utilization and often higher blocking probability. To overcome the spectrum fragmentation, a defragmentation (DF) of the spectrum can be applied by reconfiguring some or all active connections. However, reconfiguration is generally not desirable, as it can interrupt the services of the existing connections. In...
Data randomization or scrambling has been effectively used in various applications to improve the data security. In this paper, we use the idea of data randomization to proactively randomize the spectrum (re)allocation to improve connections' security. As it is well-known that random (re)allocation fragments the spectrum and thus increases blocking in elastic optical networks, we analyze the tradeoff...
We analyze Defragmentation-as-a-Service (DaaS) in elastic optical networks and show that the positive effect of defragmentation depends on the rate at which it is performed, load (or, call arrival rates) and the available resources.
Reconfiguration of connections along frequency axis, — similar to frequency hopping in wireless systems, has been shown to improving security in elastic optical networks (EONs). However, the effect of spectrum reallocation on the connections' blocking and the associated connections' security is still under-explored. In this paper, we examine the effect of reconfiguration of connections on its security...
Generally, an elastic optical network (EON) under a dynamic connection (non-uniform bandwidth) set up and termination scenario leads to spectrum fragmentation, and results in higher blocking probability. To overcome this problem, a defragmentation of the spectrum can be applied by reconfiguring some or all connections in the network. However, reconfiguration can interrupt the services of the existing...
The paper describes an Energy — Efficient Resource Allocation protocol for Wavelength-Routed All-Optical WDM Networks. Protocol selects efficient and low power consumption optimal primary and backup paths. The path selection will be done by Central Management System (CMS). The selection will be by two methods, i.e., the path with less number of free wavelengths will not be considered for selection...
Device to Device (D2D) communication technique has been projected as means of taking the benefit of increasing performance of cellular communication with direct link between users. In this paper, we propose a dynamic intra cluster data sharing method taking advantage of D2D multicast. One of the users serves as cluster head to take turns to multicast at a particular time, selected by base station...
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