2 Definitions and abbreviations

08.523GPPBase Station Controller - Base Tranceiver Station (BSC-BTS) Interface - Interface PrinciplesTS

Abbreviations used in the present document are listed in 3GPP TS 01.04.

2.1 Base Station System, BSS

The system of base station equipment (transceivers, controllers, etc..) which is viewed by the MSC through a single interface as defined by the 3GPP TS 08 0x series of recommendations, as being the entity responsible for communicating with Mobile Stations in a certain area. The radio equipment of a BSS may cover one or more cells. A BSS may consist of one or more base stations. If an internal interface according to the 3GPP TS 08.5x series at recommendations is implemented, then the BSS shall consist of one Base Station Controller (BSC) and several Base Transceiver Stations (BTSs).

The functionality is described in Recommendation 3GPP TS 08.02.

2.2 Base Station Controller, BSC

A network component in the PLMN with the functions for control of one or more Base Transceiver Stations (BTSs).

2.3 Base Transceiver Station, BTS

A network component which serves one cell, and is controlled by a Base Station Controller. The BTS can consist of one or more TRXs with or without common control equipment.

2.4 Cell

See 3GPP TS 03.02.

2.5 Transceiver, TRX

The Transceiver, TRX, in the GSM PLMN is the functional entity which supports the 8 basic radio channels of the same TDMA-frame.

2.6 Base Control Function, BCF

A functional entity which handles common control functions within a BTS, e.g. frequency hopping sequences etc.

At a multi BTS site, one of the BCFs can also be choosen to perform functions common to the site (e.g. external alarms, power supply, time base).