Capacity-Fairness Trade-off Using Coordinated Multi-Cell Processing

Virgile Garcia (1) , Nikolai Lebedev (1) , Jean-Marie Gorce (1)

1 SWING - Smart Wireless Networking

Multi-cell processing, also called Coordinated Multiple Point (CoMP), is a promising distributed technique that uses neighbour cells' antennas. It is expected to be the part of next generation cellular standards such as LTE-A. Small cell networks in dense urban environments are limited by interferences and CoMP can strongly take advantage of this fact to improve cell-edge users' throughput. The present study introduces a distributed criterion for mobiles to select their optimal set of Base Stations (BS) to perform CoMP, and evaluates the impact of this association on the fairness and the total cell throughput. For that, we use a known theoretical expression for the capacity outage probability of CoMP under Rayleigh fading and evaluate the goodputs of antennas associations. The proposed criterion is used in combination with $\alpha$-fair resource allocation to perform a joint double-objective optimization of fairness and efficiency.

Mots clés: Rayleigh fading; Multicell processing; capacity distribution; macro-diversity; interferences coordination; fairness; small cells; Rayleigh fading.

Domaines: Réseaux et télécommunications [cs.NI]

Virgile Garcia, Nikolai Lebedev, Jean-Marie Gorce. Capacity-Fairness Trade-off Using Coordinated Multi-Cell Processing. IEEE VTC Fall 2011, Sep 2011, San Francisco, United States. pp. ⟨hal-00639463⟩