Network management considerations for optical access network design
Résumé
Due to the emergence of bandwidth-requiring services, telecommunication operators are being compelled to renew their fix access network, most of them favoring the Fiber To The Home (FTTH) technology. For long, network design strategies have been driven by mere deployment CAPital EXpenditures (CAPEX). Today however, experience gathered from former networks management strongly pushes in favor of the consideration of many other sources of costs for the design of networks and operational deployment schemes. This paper focuses on the decision problem of the optimization FTTH networks under Operations, Administration and Maintenance (OAM) considerations. Mixed integer formulations, extending the classical generalized integer flow model, are proposed for the modeling of this decision problem. Extensive numerical tests on real-life instances prove the efficiency of branch and bound solving approaches for such models. Assessment of the economical impact of OAM considerations is also made. Routing problems show the practical relevance of this approach. Extensive tests have been performed on real-life instances in order to assess both the efficiency of branch and bound solving approaches on our models and the economic impact of the integration of such considerations on CAPEX costs.