eprintid: 1431930
rev_number: 28
eprint_status: archive
userid: 608
dir: disk0/01/43/19/30
datestamp: 2014-06-11 18:39:04
lastmod: 2021-10-04 02:01:52
status_changed: 2014-06-11 18:39:04
type: article
metadata_visibility: show
item_issues_count: 0
creators_name: Savory, SJ
title: Congestion Aware Routing in Nonlinear Elastic Optical Networks
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
keywords: Optical fiber communication, networks, routing, adaptive modulation, extreme value distributions
note: © 2014 IEEE. This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/
abstract: In elastic optical networks, digital coherent transceivers modify their symbol rate, modulation format, and forward error correction to best serve the network demands. In a nonlinear elastic optical network, these parameters are inherently coupled with the routing algorithm. We propose to use congestion aware routing in a nonlinear elastic optical network and demonstrate its efficacy for the NSFNET reference network (14 nodes, 22 links). The network is sequentially loaded with 100 GbE demands until a demand becomes blocked, this procedure being repeated 10000 times to estimate the network blocking probability (NBP). Three routing algorithms are considered: 1) shortest path routing; 2) simple congestion aware algorithm; and 3) weighted congestion aware routing algorithm with 50, 25, 12.5, and 6.25 GHz resolution flexgrids. For NBP = 1% using a 50 GHz grid, congestion aware routing doubles the network capacity compared with the shortest path routing. When congestion aware routing is combined with a 6.25 GHz resolution flexgrid, a fivefold increase in network capacity is afforded.
date: 2014-05-15
official_url: http://dx.doi.org/10.1109/LPT.2014.2314438
vfaculties: VENG
oa_status: green
full_text_type: pub
primo: open
primo_central: open_green
verified: verified_manual
elements_source: WoS-Lite
elements_id: 950274
doi: 10.1109/LPT.2014.2314438
lyricists_name: Savory, Sebastian
lyricists_id: SSAVO08
full_text_status: public
publication: IEEE PHOTONICS TECHNOLOGY LETTERS
volume: 26
number: 10
pagerange: 1057 - 1060
issn: 1041-1135
citation:        Savory, SJ;      (2014)    Congestion Aware Routing in Nonlinear Elastic Optical Networks.                   IEEE PHOTONICS TECHNOLOGY LETTERS , 26  (10)   1057 - 1060.    10.1109/LPT.2014.2314438 <https://doi.org/10.1109/LPT.2014.2314438>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/1431930/1/06781032.pdf