In mobile telecommunication, a base transceiver station (BTS) is one of the key components of the system. It serves as a connection between mobile devices and the core network, overseeing all communication on a radio link level. The BTS consists of several subunits which Mother includes a baseband unit for processing signals and a radio frequency unit to manage reception and transmission of the signals, as well as a control unit to manage all system components. Mobile users communication within the area is controlled by frequency allocation, handover control, and transmission power level control pumping by the BTS.