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1 UQAM - Département d-informatique Canada 2 ETS - Ecole de Technologie Supérieure

Abstract : This paper considers the problem of assigning frequency and time resources in a heterogeneous network, in a self-organizing manner. The general problem is to assign a resource set, so as to minimize the number of pairs of adjacent base stations that obtain the same resource. This can be modeled by Minimum-Collisions Coloring MCC on an undirected graph, where the colors are the resources, the vertices are the wireless nodes and the edges represent interference relations between nodes. The MCC decision problem is NP-complete. This paper develops a game-theoretic model for the MCC problem. The players of this game are a set of colored agents, which in practice could be software robots. The game is proven to possess multiple pure-strategy Nash Equilibria NEs. Then a swapping mechanism is developed to improve the NE performance and the resulting coloring is pairwise Nash stable. Further refinement is proposed by making use of an external referee. All theoretical results are corroborated through simulations.

Keywords : Pairwise Nash Self-organizing networks small cells femtocells





Autor: Mathew Goonewardena - Wessam Ajib - Elbiaze Halima -

Fuente: https://hal.archives-ouvertes.fr/



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