Dispersion-Adaptive First-Last Fit Spectrum Allocation Scheme for Elastic Optical Networks

被引：34

作者：

Chatterjee, Bijoy Chand ^{[1
]}

Oki, Eiji ^{[1
]}

机构：

[1] Univ Electrocommun, Dept Informat & Commun Engn, Tokyo 1828585, Japan

来源：

IEEE COMMUNICATIONS LETTERS | 2016年 / 20卷 / 04期

关键词：

First-last fit; dispersion; QoT; spectrum allocation; WAVELENGTH ASSIGNMENT; PATH NETWORK;

D O I：

10.1109/LCOMM.2016.2526998

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

The quality-of-transmission (QoT) degradation due to the dispersion effect in longer lightpaths is higher than that of shorter lightpaths in a dispersion uncompensated network. To overcome this shortcoming, this letter proposes a dispersion-adaptive first-last fit spectrum allocation scheme for elastic optical networks to decrease the call blocking in the network. The proposed scheme assigns longer lightpath requests from the smallest indexed spectrum slot, where the dispersion effect is less, and shorter lightpath requests from the largest indexed spectrum slot, where the dispersion effect is more. As a result, a less robust modulation technique is used to maintain the QoT threshold level for the longer lightpath requests, and hence a lower number of spectrum slots are required for lightpath establishment. Simulation results show that the proposed scheme outperforms the conventional scheme in terms of blocking probability and contiguous aligned available slot ratio.

引用

页码：696 / 699

页数：4

共 10 条

[1]

[Anonymous], 2012, Fiber-Optic Communication Systems

[2] A survey on physical layer impairments aware routing and wavelength assignment algorithms in optical networks [J].

Azodolmolky, Siamak ;

Klinkowski, Miroslaw ;

Marin, Eva ;

Careglio, Davide ;

Pareta, Josep Sole ;

Tomkos, Ioannis .

COMPUTER NETWORKS, 2009, 53 (07) :926-944

[3] Routing and Spectrum Allocation in Elastic Optical Networks: A Tutorial [J].

Chatterjee, Bijoy Chand ;

Sarma, Nityananda ;

Oki, Eiji .

IEEE COMMUNICATIONS SURVEYS AND TUTORIALS, 2015, 17 (03) :1776-1800

[4] Priority Based Dispersion-Reduced Wavelength Assignment for Optical Networks [J].

Chatterjee, Bijoy Chand ;

Sarma, Nityananda ;

Sahu, Partha Pratim .

JOURNAL OF LIGHTWAVE TECHNOLOGY, 2013, 31 (02) :257-263

[5] Priority Based Routing and Wavelength Assignment With Traffic Grooming for Optical Networks [J].

Chatterjee, Bijoy Chand ;

Sarma, Nityananda ;

Sahu, Partha Pritim .

JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING, 2012, 4 (06) :480-489

[6] MATERIAL DISPERSION IN LIGHTGUIDE GLASSES [J].

FLEMING, JW .

ELECTRONICS LETTERS, 1978, 14 (11) :326-328

[7] Elastic Optical Networking: A New Dawn for the Optical Layer? [J].

Gerstel, Ori ;

Jinno, Masahiko ;

Lord, Andrew ;

Ben Yoo, S. J. .

IEEE COMMUNICATIONS MAGAZINE, 2012, 50 (02) :S12-S20

[8] Distance-Adaptive Spectrum Resource Allocation in Spectrum-Sliced Elastic Optical Path Network [J].

Jinno, Masahiko ;

Kozicki, Bartlomiej ;

Takara, Hidehiko ;

Watanabe, Atsushi ;

Sone, Yoshiaki ;

Tanaka, Takafumi ;

Hirano, Akira .

IEEE COMMUNICATIONS MAGAZINE, 2010, 48 (08) :138-145

[9] Spectrum-Efficient and Scalable Elastic Optical Path Network: Architecture, Benefits, and Enabling Technologies [J].

Jinno, Masahiko ;

Takara, Hidehiko ;

Kozicki, Bartlomiej ;

Tsukishima, Yukio ;

Sone, Yoshiaki ;

Matsuoka, Shinji .

IEEE COMMUNICATIONS MAGAZINE, 2009, 47 (11) :66-73

[10]

Zuqing Z., 2013, IEEE OSA J LIGHTW TE, V31, P15

← 1 →