Optimizing the investments in mobile networks and subscriber migrations for a telecommunication operator

Abstract : Worldwide telecommunications groups are both infrastructure operator and service provider. Hence, when planning the network expansion, these groups must also consider the subscribers dynamics, which they can influence through subsidies. Addressing both aspects together enables them to better optimize the network dimensioning, therefore avoiding unnecessary costs. In this work, the network expansion represents the deployment and/or reinforcement of several technologies (e.g. 2G,3G,4G), assuming that subscribers to a given technology can be served by this technology or older ones. The objective of the resulting optimization problem is to minimize network investments costs and subsides, while being subject to both capacity and strategical constraints, such as minimum coverage and users averaged throughput. We model the customer behavior in response to subsides with S-shape piecewise linear functions, which are linearized. We assess numerically the resulting Mixed-Integer Linear Programming (MILP) formulation on real-life instances focusing on 3G/4G migrations. Our results show the scalability of the MILP model for 2 network generations and 100 sites. Moreover, they underline the cost-benefit of solving a unique optimization problem over the whole time-horizon (5 years) compared to decomposing the problem year by year.
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Conference papers
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https://hal.archives-ouvertes.fr/hal-02189508
Contributor : Adrien Cambier <>
Submitted on : Friday, July 19, 2019 - 3:58:56 PM
Last modification on : Wednesday, July 24, 2019 - 2:12:09 PM

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  • HAL Id : hal-02189508, version 1

Citation

Adrien Cambier, Matthieu Chardy, Rosa Figueiredo, Adam Ouorou, Michael Poss. Optimizing the investments in mobile networks and subscriber migrations for a telecommunication operator. EURO: European Conference on Operational Research, Jul 2018, Valencia, Spain. ⟨hal-02189508⟩

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