Interference mitigation using uplink power control for two-tier femtocell networks

By Han-Shin Jo, Cheol Mun, J. Moon, J. Yook. IEEE Transactions on Wireless Communications, 2009

320 citations recorded by the source corpus.

This paper proposes two interference mitigation strategies that adjust the maximum transmit power of femtocell users to suppress the cross-tier interference at a macrocell base station (BS). The open-loop and the closed-loop control suppress the cross-tier interference less than a fixed threshold and an adaptive threshold based on the noise and interference (NI) level at the macrocell BS, respectively. Simulation results show that both schemes effectively compensate the uplink throughput degradation of the macrocell BS due to the cross-tier interference and that the closed-loop control provides better femtocell throughput than the open-loop control at a minimal cost of macrocell throughput.

Subfields: Computer Networks and Communications, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/098e7d07b90cff692027ca8cca407da24af3230e

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In Computer Networks and Communications

In Electrical and Electronic Engineering

Citations in the corpus

Resource Allocation for Cognitive Small Cell Networks: A Cooperative Bargaining Game Theoretic Approach (2015, background): “This is particularly the case for sparse deployment of small cells in suburban environments [5], where co-tier intersmall cell interference is negligible as compared with cross-tier interference [22], [23].”
Resource Allocation in Spectrum-Sharing OFDMA Femtocells With Heterogeneous Services (2014, background): “…is assumed as part of the thermal noise because of the severe wall penetration loss and low power of FBSs [2], [11], especially in sparsely deployed femtocells in suburban environments [7], where co-tier inter-femtocell interference is negligible as compared with cross-tier interference [2], [8].”
Femtocells: Past, Present, and Future (2012, background): “the dominant method for interference coordination has been power control strategies [77]–[79] and/or reserving a “femtofree” band where macrocell users can go to escape cross-tier interference when it arises.”
Interference Management in Femtocells (2013, background): “schemes, open loop power control and closed loop power control have also been suggested for femtocells [84].”
Heterogeneous Cellular Networks with Flexible Cell Association: A Comprehensive Downlink SINR Analysis (2011, background): “INTRODUCTION HETEROGENEOUS cellular networks (HCNs) comprise a conventional cellular network overlaid with a diverse set of lower-power base stations (BSs) such as picocells [1], femtocells [2], [3], [4], and perhaps relay BSs [5].”