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Telecommunication Systems

, Volume 14, Issue 1–4, pp 197–217 | Cite as

Design of local networks using USHRs

  • Donghan Kang
  • Kyungsik Lee
  • Sungsoo Park
  • Kyungchul Park
  • Sang‐Baeg Kim
Article

Abstract

We consider the problem of designing a local network in a two‐level telecommunication network. Given one or two hub nodes, central offices (COs) and conduits, the problem is to find a set of unidirectional self‐healing rings (USHRs) which covers all COs and satisfies all demands at minimum cost. The solution approach used is the decomposition and column generation. Master problem and subproblem are modeled as integer programming models. After the optimal solution to linear programming relaxation of the master problem is obtained, a branch‐and‐bound algorithm is used to get an integer solution. A set of valid inequalities for a subproblem is given and a branch‐and‐cut algorithm is used to find an optimal solution to the subproblem. Computational results using real data are reported.

Keywords

Travel Salesman Problem Travel Salesman Problem Local Network Column Generation Master Problem 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 2000

Authors and Affiliations

  • Donghan Kang
    • 1
  • Kyungsik Lee
    • 2
  • Sungsoo Park
    • 1
  • Kyungchul Park
    • 3
  • Sang‐Baeg Kim
    • 4
  1. 1.Department of Industrial EngineeringKorea Advanced Institute of Science and TechnologyTaejonKorea
  2. 2.ETRITaejonKorea
  3. 3.Telecommunication Network LabKorea TelecomTaejonKorea
  4. 4.Telecommunication Network LabKorea TelecomTaejonKorea

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