NDLI: Experimental assessment of in-operation spectrum defragmentation

Content Provider	Springer Nature Link
Author	Gifre, Lluis Paolucci, Francesco Aguado, Alejandro Casellas, Ramon Castro, Alberto Cugini, Filippo Castoldi, Piero Velasco, Luis López, Víctor
Copyright Year	2014
Abstract	Dynamic operation of flexgrid networks might cause optical spectrum to be divided into fragments, which makes it difficult finding contiguous spectrum of the required width for incoming connection requests, leading thus to an increased blocking probability. To alleviate to some extent that spectrum fragmentation, the central frequency of already established connections can be shifted to create wider contiguous spectrum fragments to be allocated to incoming connections; this procedure is called spectrum defragmentation. In this paper, we propose using the so called applications based network operations (ABNO) architecture, currently under standardization in the IETF, to deal with the defragmentation use case while the network is in operation. A workflow involving several elements in the ABNO architecture is proposed and experimentally assessed in a distributed test bed connecting facilities in three major European cities.
Starting Page	128
Ending Page	140
Page Count	13
File Format	PDF
ISSN	1387974X
Journal	Photonic Network Communications
Volume Number	27
Issue Number	3
e-ISSN	15728188
Language	English
Publisher	Springer US
Publisher Date	2014-04-19
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Flexgrid optical networks Spectrum defragmentation In-operation planning Computer Communication Networks Electrical Engineering Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Computer Networks and Communications Electrical and Electronic Engineering Hardware and Architecture Software

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