Flexible Multiple Base Station Association and Activation for Downlink Heterogeneous Networks

Abstract

This letter shows that the flexible association of possibly multiple base stations (BSs) to each user over multiple frequency bands, along with the joint optimization of BS transmit power that encourages the turning-off of the BSs at off-peak time, can significantly improve the performance of a downlink heterogeneous wireless cellular network. We propose a gradient projection algorithm for optimizing BS association and an iteratively reweighting scheme together with a novel proximal gradient method for optimizing power in order to find the optimal tradeoff between network utility and power consumption. Simulation results reveal significant performance improvement as compared to the conventional single-BS association.

References in corpus (3)

• Joint Downlink Base Station Association and Power Control for Max-Min Fairness: Computation and Complexity
• Base Station Activation and Linear Transceiver Design for Optimal Resource Management in Heterogeneous Networks
• Sample Approximation-Based Deflation Approaches for Chance SINR Constrained Joint Power and Admission Control

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