Column generation algorithm for RSA problems in flexgrid optical networks
Marc Ruiz , Michał Pióro , Mateusz Żotkiewicz , Mirosław Klinkowski , Luis Velasco
AbstractFinding optimal routes and spectrum allocation in flexgrid optical networks, known as the RSA problem, is an important design problem in transport communication networks. The problem is NP -hard, and its intractability becomes profound when network instances with several tens of nodes and several hundreds of demands are to be solved to optimum. In order to deal with such instances, large-scale optimization methods need to be considered. In this work, we present a column (more precisely, path) generation-based method for the RSA problem. The method is capable of finding reasonable sets of lightpaths, avoiding large sets of precomputed paths, and leading to high-quality solutions. Numerical results illustrating effectiveness of the proposed method for obtaining solutions for large RSA problem instances are presented.
|Journal series||Photonic Network Communications, ISSN 1387-974X, [1572-8188]|
|Keywords in English||Integer programming, Column generation, Routing and spectrum allocation, Flexgrid optical networks|
|ASJC Classification||; ; ; ;|
|Project||Industry-Driven Elastic and Adaptive Lambda Infrastructure for Service and Transport Networks . Project leader: Pióro Michał,
, Phone: +48 22 234-7383, start date 01-11-2012, end date 31-10-2015, IT/2012/7PR/11, Completed
Mixed-integer programming models for joint optimization of link capacity assignment, flow scheduling, and routing in fair multicommodity flow networks. Project leader: Pióro Michał, , Phone: +48 22 234-7383, application date 07-06-2011, start date 07-12-2011, end date 06-12-2014, IT/2012/badawczy/30, Completed
The Develpment of Digital Communicatios. Project leader: Lubacz Józef, , Phone: 22 234 65 31, start date 04-05-2012, planned end date 31-03-2013, end date 31-12-2013, IT/2012/statut, Completed
|Score|| = 15.0, 17-03-2020, ArticleFromJournal|
= 15.0, 17-03-2020, ArticleFromJournal
|Publication indicators||= 25; = 33; = 46.0; : 2014 = 0.692; : 2013 = 0.75 (2) - 2013=0.535 (5)|
|Citation count*||47 (2020-09-15)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.