When classifying market values and growth rates of small cells into various categories, it is also found that the growth rate in each category is rather tremendously high. That is, the compound annual growth rates (CAGR%) of Femtocells, Picocells, and Microcells over a period of 6 years, from 2012-2018, stand at 86.29, 88.67, and 66.44 percent, respectively and the total market value of these 3 categories is worth not less than 10,300 million USD by 2018