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Content for  TS 48.052  Word version:  16.0.0

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1  ScopeWord‑p. 5

The use and general aspects of the A-bis interface are given in TS 48.051.
The present document gives the principle basis for the rest of the specifications specifying the interface between the Base Station Controller, BSC, and the Base Transceiver Station, BTS, with its transceivers, TRX. These components together form the Base Station System, BSS. (The interface between MSC and the BSS is specified in TS 48.001 and TS 48.020).
The intention with this interface is to get a unified way of connecting remotely located BTSs/TRXs to a BSC allowing for the interconnection of BSCs and BTSs/TRXs from different manufacturers.
In order to keep the BTS as simple as possible, BTS contains only those functions which have to recide close to the radio interface.

2  References

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
  • References are either specific (identified by date of publication, edition number, version number, etc.) or non specific.
  • For a specific reference, subsequent revisions do not apply.
  • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
TR 21.905: "Vocabulary for 3GPP Specifications".
TS 48.001: "Base Station System Mobile services Switching Centre (BSS MSC) interface; General aspects".
TS 48.002: "Base Station System - Mobile-services Switching Centre (BSS - MSC) interface Interface principles".
[4]  Void.
TS 48.006: "Signalling transport mechanism specification for the Base Station System - Mobile-services Switching Centre (BSS-MSC) interface".
[6]  Void.
TS 48.020: "Rate adaption on the Base Station System Mobile services Switching Centre (BSS MSC) interface".
TS 48.051: "Base Station Controller Base Transceiver Station (BSC BTS) interface; General aspects".
TS 48.058: "Base Station Controller Base Transceiver Station (BSC BTS) interface; Layer 3 specification".
TS 48.060: "Inband control of remote transcoders and rate adaptors for full rate traffic channels".
TS 48.061: "Inband control of remote transcoders and rate adaptors for half rate traffic channels".
[12]  Void.
TS 23.002: "Network Architecture".

3  Definitions and abbreviationsWord‑p. 6

3.1  Definitions

For the purposes of the present document, the following terms and definitions apply:
Base Station System (BSS):
system of base station equipment (transceivers, controllers, etc..) which is viewed by the MSC through a single interface as defined by the 3GPP TS 48.0xx 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 48.05x series at recommendations is implemented, then the BSS shall consist of one Base Station Controller (BSC) and several Base Transceiver Stations (BTSs).
Base Station Controller (BSC):
network component in the PLMN with the functions for control of one or more Base Transceiver Stations (BTSs).
Base Transceiver Station (BTS):
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.
See TS 23.002.
Transceiver (TRX):
in the GSM PLMN is the functional entity which supports the 8 basic radio channels of the same TDMA-frame.
Base Control Function (BCF):
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).

3.2  Abbreviations

For the purposes of the present document, the abbreviations given in TR 21.905 apply.

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