  This study deals with the problem of optimizing transmit power in high
density heterogeneous networks. In the communication network, effective methods
of allocating transmit power, in order to reduce the total transmit power, but
still ensure the quality of service of the user equipment, is a big challenge.
number of power consumption optimization problems in core station links, with
the goal of maximizing network energy efficiency while ensuring user
experience. To solve this non-convex optimization problem, the authors first
propose some iterative algorithms to find the convergence point such as the
"descent" method, the "Lagrange" method. Then, the authors evaluate the
convergence point of each method as well as consider the complexity of each
algorithm when put into application. Finally, the simulation results will show
the convergence value and compare the performance with the technologies being
used today to confirm the effectiveness of the proposed algorithm.
