Abstract

The physical resource assignment problem in dynamic optical networks, often referred to as the routing and wavelength assignment problem, is very important for the development of optical transport networks. Research has been done to optimize this operation so that the overall connection blocking can be minimized. Traffic grooming adds another dimension to this problem by introducing opportunities for multiplexing low-bit-rate traffic into a high-bit-rate stream. The ant colony optimization (ACO) algorithm is a metaheuristic method that is inspired by the foraging behavior of ants and has been widely implemented in solving discrete optimization problems. This paper proposes an ACO to solve the grooming, routing, and wavelength assignment problem. Unlike previous work, our work includes considerations of mixed line rate, physical impairments, and traffic grooming functionality. Comprehensive simulation tests show how variations on the ACO algorithms’ implementation affect performance. A comparison is made between this distributed algorithm and a centralized algorithm that we propose, a grooming adaptive shortest path algorithm (GASP). Although GASP shows better efficiency in terms of blocking probability, ACO shows great robustness and adaptivity to varying network and traffic conditions.

© 2014 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Routing and Wavelength Assignment in a Satellite Optical Network Based on Ant Colony Optimization With the Small Window Strategy

Yi Dong, Shanghong Zhao, Hao dan Ran, Yongjun Li, and Zihang Zhu
J. Opt. Commun. Netw. 7(10) 995-1000 (2015)

Ensuring Resilience in Optical WDM Networks With Nature-Inspired Heuristics

Fatma Corut Ergin, Elif Kaldırım, Ayşegül Yayımlı, and A. Şima Uyar
J. Opt. Commun. Netw. 2(8) 642-652 (2010)

Offline Routing and Regenerator Placement and Dimensioning for Translucent OBS Networks

Oscar Pedrola, Davide Careglio, Miroslaw Klinkowski, and Josep Solé-Pareta
J. Opt. Commun. Netw. 3(9) 651-666 (2011)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (3)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (7)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription