Heterogeneous cellular networks are gaining momentum in industry and the research community, and are attracting the attention of standard bodies such as 3GPP LTE and IEEE 802.16j, whose objectives are to increase the capacity and coverage of cellular networks. In this article, we provide an overview of expansion strategies, optimal locations of base stations with different characteristics, and radio-planning models.
['Aigerim Bakatkaliyevna Altayeva', 'Young Im Cho']
Comparison of Radio Wave Propagation Models for Mobile Networks