Abstract

In this paper we consider a capacity sizing and routing problem in synchronous digital hierarchy/wavelength division multiplexing networks with nodes having switching capabilities. This problem is well known in the literature as the multi-hop traffic grooming problem and is generally formulated as an integer linear program, which is especially hard to solve when the demand channels are unsplittable and nonuniform. To overcome this difficulty we develop a branching strategy, using a lower bound that is close to the optimal solution. We also devise a reformulation which accelerates branch-and-bound-based solvers. The computational results clearly show that our method is effective in reducing execution time as well as memory consumption, in comparison to traditional methods based on branch-and-bound.

©2011 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Traffic Grooming in Optical Networks: Decomposition and Partial Linear Programming (LP) Relaxation

Hui Wang and George N. Rouskas
J. Opt. Commun. Netw. 5(8) 825-835 (2013)

Stable Logical Topologies for Survivable Traffic Grooming of Scheduled Demands

Arunita Jaekel, Ying Chen, and Ataul Bari
J. Opt. Commun. Netw. 2(10) 793-802 (2010)

Many-to-Many Traffic Grooming in WDM Networks

Mohammad A. Saleh and Ahmed E. Kamal
J. Opt. Commun. Netw. 1(5) 376-391 (2009)

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 (4)

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 (7)

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 (36)

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