On the Filter Narrowing Issues in Elastic Optical Networks

On Spectrum Assignment in Elastic Optical Tree-Networks

Spectrum Defragmentation in Elastic Optical Networks

Elastic optical networks (EONs) provide fine bandwidth allocation granularity and enable scalable network management. In this paper, we review the strategies to alleviate spectrum fragmentation from both the preemptive and proactive perspectives. As for preemptive defragmentation, we investigate the characteristics of bandwidth fragmentation in EONs, and then discuss a fragmentation-aware routi...

Dynamic on-demand defragmentation in flexible bandwidth elastic optical networks.

While flexible bandwidth elastic optical networking is a promising direction for future networks, the spectral fragmentation problem in such a network inevitably raises the blocking probability and significantly degrades network performance. This paper addresses the spectral defragmentation problem using an auxiliary graph based approach, which transforms the problem into a matter of finding th...

Network Function Virtualization in Optical Inter-Datacenter Elastic Optical Networks

We first explain the motivations of studying network function virtualization (NFV) in inter-datacenter elastic optical networks (IDC-EONs). Then, we analyze the challenges for provisioning virtual network function forwarding graphs (vNF-FGs) in IDC-EONs, and give insights on how to customize vNF-FG orchestration and optimize IT and spectrum resource allocations jointly. OCIS codes: (060.1155) A...

the impact of e-readiness on ec success in public sector in iran the impact of e-readiness on ec success in public sector in iran

acknowledge the importance of e-commerce to their countries and to survival of their businesses and in creating and encouraging an atmosphere for the wide adoption and success of e-commerce in the long term. the investment for implementing e-commerce in the public sector is one of the areas which is focused in government‘s action plan for cross-disciplinary it development and e-readiness in go...