Influence of microcells on improving energy efficiency in heterogeneous networks

It is considered a heterogeneous cellular network with using microcells. The author proposes the improving of energy efficiency through the introduction of microcells in a heterogeneous network and its location on the border between the two macrocells. The energy efficiency has been described mathematically. Analytical results of the simulation indicate that the use of microcell improves the energy efficiency about 29 - 37%.