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A bankruptcy game approach for resource allocation in cooperative femtocell networks

Sahar Hoteit 1 Stefano Secci 1 Rami Langar 1 Guy Pujolle 1 Raouf Boutaba 2 
1 Phare
LIP6 - Laboratoire d'Informatique de Paris 6
Abstract : —Femtocells have recently appeared as a viable solution to enable broadband connectivity in mobile cellular networks. Instead of redimensioning macrocells at the base station level, the modular installation of short-range access points can grant multiple benefits, provided that interference is efficiently managed. In the case where femtocells use different frequency bands than macrocells (i.e., split-spectrum approach), interference between femtocells is the major issue. In particular, congestion cases in which femtocell demands exceed the available bandwidth pose an important challenge. If, as expected, the femtocell service is going to be separately billed by legacy wire-line Internet Service Providers, strategic interference management and resource allocation mechanisms are needed to avoid performance degradation during congestion cases. In this paper, we model the resource allocation in cooperative femtocell networks as a bankruptcy game. We identify possible solutions from cooperative game theory, namely the Shapley value and the Nucleolus, and show through extensive simulations of realistic scenarios that they outperform two state-of-the-art schemes, namely Centralized-Dynamic Frequency Planning, C-DFP, and Frequency-ALOHA, F-ALOHA. In particular, the Nucleolus solution offers best performance overall in terms of throughput and fairness, at a lower time complexity.
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Sahar Hoteit, Stefano Secci, Rami Langar, Guy Pujolle, Raouf Boutaba. A bankruptcy game approach for resource allocation in cooperative femtocell networks. IEEE Global Communications Conference (IEEE GLOBECOM), Dec 2012, Anaheim, United States. ⟨10.1109/GLOCOM.2012.6503376⟩. ⟨hal-01131511⟩



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