Editing Base transceiver station (section)

{{Update|date=February 2025}}{{short description|Communication equipment}}
A '''base transceiver station''' ('''BTS''') or a '''baseband unit<ref>{{cite web | url=https://www.fiercewireless.com/tech/what-ecpri-and-why-it-important-for-5g-and-open-vran | title=What is eCPRI, and why is it important for 5G and open vRAN? &#124; Fierce Network | date=15 October 2019 }}</ref> (BBU)''' is a piece of equipment that facilitates [[wireless|wireless communication]] between [[user equipment]] (UE) and a network. UEs are devices like [[mobile phone]]s (handsets), [[Wireless local loop|WLL]] phones, computers with [[wireless Internet]] connectivity, or antennas mounted on buildings or telecommunication towers. 
The network can be that of any of the wireless communication technologies like [[GSM]], [[CDMA]], [[wireless local loop]], [[Wi-Fi]], [[WiMAX]] or other [[wide area network]] (WAN) technology.

BTS is a part of a ''[[base station]]'' (BS).

Though the term BTS can be applicable to any of the wireless communication standards, it is generally associated with mobile communication technologies like [[GSM]] and [[CDMA]].  In this regard, a BTS forms part of the [[base station subsystem]] (BSS) developments for system management.  It may also have equipment for [[encrypting]] and decrypting communications, spectrum filtering tools (band pass filters) and so on. [[Antenna (radio)|Antennas]] may also be considered as components of BTS in general sense as they facilitate the functioning of BTS. Typically a BTS will have several transceivers (TRXs) which allow it to serve several different frequencies and different sectors of the cell (in the case of sectorised base stations).  A BTS is controlled by a parent [[base station controller]] via the base station control function (BCF). The BCF is implemented as a discrete unit or even incorporated in a TRX in compact base stations. The BCF provides an operations and maintenance (O&M) connection to the [[network management system]] (NMS), and manages operational states of each TRX, as well as software handling and alarm collection. The basic structure and functions of the BTS remains the same regardless of the wireless technologies.