Joint Optimization of Radio Resources in Small and Macro Cell Networks

Chung Shue Chen 1, 2 François Baccelli 1, 2 Roullet Laurent 3
1 TREC - Theory of networks and communications
DI-ENS - Département d'informatique de l'École normale supérieure, Inria Paris-Rocquencourt
3 Network Technologies
Alcatel-Lucent Bell Labs France [Nozay]
Abstract : We propose and analyze a class of distributed algorithms performing the joint optimization of radio resources in heterogeneous cellular networks made of a juxtaposition of macro and small cells. We show that within this context, it is essential to use algorithms able to simultaneously solve the problems of channel selection, user association and power control. In such networks, the unpredictability of the cell and user patterns also requires self-optimized schemes. The proposed solution is inspired from statistical physics and is based on Gibbs sampler. It can be implemented in a fully distributed way and nevertheless achieves minimal system-wide potential delay. Simulation results show that it outperforms today's default operational methods in both throughput and energy efficiency.
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Chung Shue Chen, François Baccelli, Roullet Laurent. Joint Optimization of Radio Resources in Small and Macro Cell Networks. IEEE Vehicular Technology Conference, IEEE, May 2011, Budapest, Hungary. ⟨10.1109/VETECS.2011.5956746⟩. ⟨hal-00745117⟩

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