A multiobjective routing model for Multiprotocol Label Switching networks with multiple service types and traffic splitting is presented in this paper. The routing problem is formulated as a multiobjective mixed-integer program, where the considered objectives are the minimization of the bandwidth routing cost and the minimization of the load cost in the network links with a constraint on the maximal splitting of traffic trunks. Two different exact methods are developed for solving the formulated problem, one based on the classical constraint method and another based on a modified constraint method. A very extensive experimental study, with results on network performance measures in various reference test networks and in randomly generated networks, is also presented and its results are discussed.
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Rita Girão-Silva graduated in electrical engineering (telecommunications) in 1999 and received her Ph.D. diploma in electrical engineering (telecommunications and electronics) in 2009, both at the University of Coimbra. She is an Assistant Professor at the Department of Electrical and Computer Engineering, University of Coimbra, and a researcher at INESC Coimbra. Her research areas include routing models in telecommunications networks and multiobjective optimization. She has participated in different research and development projects financed by FCT and the EC, and has also participated in projects of cooperation between university and industry (being the leader of one of them).
José Craveirinha is a retired Full Professor in Telecommunications at the Department of Electrical Engineering and Computers of the Faculty of Sciences and Technology of the University of Coimbra, Portugal. Academic degrees: diploma in Electrical Engineering Science (EES) — Telecommunications & Electronics, IST Lisbon Technical University, 1975; M.Sc. (1981) and Ph.D. in EES, University of Essex (UK) (1984), Doctor of Science (“Agregação”) in EES at the University of Coimbra (1996). Previous positions: Associate Professor at FCTUC, Coimbra Univ; Telecom R&D Engineer (CET-Portugal Telecom). Coordinator of a research group in Teletraffic Engineering and Network Design, INESC-Coimbra R&D institute, since 1986, Director of this institute 1994–99 and President of its Scientific Council. He is author of scientific publications in teletraffic modelling, reliability analysis, planning and optimisation of telecommunication networks. His main present interests are in multicriteria routing and resilient routing models and optimisation algorithms for optical and IP/MPLS networks.
João Clímaco is a retired Full Professor at the Faculty of Economics of the University of Coimbra. He is currently a researcher and Member of Conselho Geral of INESC-Coimbra, and co-coordinator of the PhD program on “Science Applied to Decision” at the Faculty of Economics of the University of Coimbra. He is Special Invited Researcher (PVE) of the Brazilian Scientific Program — Science Without Borders (Ciência sem Fronteiras), at the Federal University of Rio de Janeiro, two months per year till 2016. He obtained a Master of Science Degree in “Control Systems” at the Imperial College of Science and Technology, University of London (1978); the “Diploma of Membership of the Imperial College of Science and Technology” (1978); the Ph.D. in Optimization and Systems Theory, Electrical Engineering Department, University of Coimbra (1982); and the title of “Agregação” at the University of Coimbra (1989). He was awarded with: “Conference Chairman Award”, International Society on Multiple Criteria Decision Making (1995) and Grande Oficial da Ordem do Rio Branco, Brazil (1996). In 2013 he was awarded with the “Georg Cantor Award” by the International Society on Multiple Criteria Decision Making. He is Past Vice-President of ALIO — Latin Ibero American OR Association, Past Vice-President of the Portuguese OR Society, and Past Member of the International Executive Committee of the International Society on Multiple Criteria Decision Making. He is member of the IFIP-WG 8.3-Decision Support Systems. He belongs to the Editorial Board of the following Scientific Journals: “Group Decision and Negotiation”, “International Transactions in Operational Research”, “International Journal of Decision Support Systems” and Scientific World Journal — Operations Research Stream. He is also member of the Editorial Board of the University of Coimbra Press. He is author of about 160 works of Scientific Journal Papers (about 120) and Book Chapters (about 40) using the “peers refereeing selection”.
Maria Eugénia Captivo is an Associate Professor of Operations Research at Faculdade de Ciências da Universidade de Lisboa, and a researcher at the Operations Research Center. She obtained a graduation in Mathematics (1976), a Ph.D. in Operations Research (1988) and the title of “Agregação” (2005), all at Universidade de Lisboa. Her current research interests are in multicriteria combinatorial optimization, location problems, network optimization, surgery scheduling, decision support systems, production planning, cutting and packing. She coordinates the Master course in Statistics and Operational Research at Faculdade de Ciências da Universidade de Lisboa. She has supervised 11 Ph.D. and 20 M.Sc. students and participated in several research and development projects financed by different R&D agencies, such as the INIC, JNICT, FCT and AID (was the leader of two such projects) and in different projects of cooperation between university and industry. She is a member of INFORMS, EURO, MCDM, APDIO and SPM.
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Girão-Silva, R., Craveirinha, J., Clímaco, J. et al. Multiobjective routing in multiservice MPLS networks with traffic splitting — A network flow approach. J. Syst. Sci. Syst. Eng. 24, 389–432 (2015). https://doi.org/10.1007/s11518-015-5262-4
- Routing models
- multiobjective optimization
- telecommunication networks
- network flow approach
- traffic splitting