BTS in Telecom

The Base Transceiver Station (BTS) is a term used to denote a base station in GSM terminology. A BTS consists of an antenna and the radio equipment necessary to communicate by radio with a Mobile Station (MS). Each BTS covers a defined area, known as a cell. A BTS is under control of a BSC, which is in turn under control of a MSC (Mobile Switching Centre).

https://www.techopedia.com/definition/2927/base-transceiver-station-bts

https://www.researchgate.net/publication/295819666_BTS_BSC_MSC_details