SIST ETS 300 522 E3:2003

Digital cellular telecommunications system (Phase 2) (GSM); Network architecture (GSM 03.02)

TThe purpose of this third edition European Telecommunication Standard (ETS) is to present the possible architectures of the mobile system. Clause 3 of this ETS contains a definition of the different functional entities needed to support the mobile service. In clause 4, the confi guration of a PLMN is described as well as the organization of the fun ctional entities; the configuration presented is the most general in o rder to cope with all the possible implementations which can be imagin ed in the different countries. To illustrate that purpose, some exampl es of possible configurations are presented. Clause 5 of this ETS cont ains a brief description of the interfaces involved which shows the pr inciple of the organization considered.

Digitalni celični telekomunikacijski sistem (faza 2) – Arhitektura omrežja (GSM 03.02)

General Information

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.070.50 - Global System for Mobile Communication (GSM)
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI ETS 300 522 ed.3 (1996-11) - Digital cellular telecommunications system (Phase 2) (GSM); Network architecture (GSM 03.02)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST ETS 300 522 E3:2003
01-december-2003
'LJLWDOQLFHOLþQLWHOHNRPXQLNDFLMVNLVLVWHPID]D±$UKLWHNWXUDRPUHåMD*60

Digital cellular telecommunications system (Phase 2) (GSM); Network architecture (GSM
03.02)
Ta slovenski standard je istoveten z: ETS 300 522 Edition 3
ICS:
33.070.50 Globalni sistem za mobilno Global System for Mobile
telekomunikacijo (GSM) Communication (GSM)
SIST ETS 300 522 E3:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 522 E3:2003

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SIST ETS 300 522 E3:2003
EUROPEAN ETS 300 522
TELECOMMUNICATION November 1996
STANDARD Third Edition
Source: ETSI TC-SMG Reference: RE/SMG-030302PR2
ICS: 33.020
Key words: Digital cellular telecommunications system, Global System for Mobile communications (GSM)
R
GLOBAL SYSTEM FOR
MOBILE COMMUNICATIONS
Digital cellular telecommunications system (Phase 2);
Network architecture
(GSM 03.02)
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: [e-mail]
Tel.: [phone] - Fax: [phone]
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1996. All rights reserved.

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ETS 300 522 (GSM 03.02 version 4.2.1): November 1996
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

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Contents
Foreword .5
1 Scope .7
1.1 Normative references .7
2 Definitions and abbreviations .9
2.1 Location register .9
2.1.1 Home Location Register (HLR) .9
2.1.2 Visitor Location Register (VLR).9
2.2 Authentication Centre (AuC).9
2.3 Equipment Identity Register (EIR) .9
2.4 Mobile-services Switching Centre (MSC) .10
2.5 Public Land Mobile Network (PLMN).10
2.6 Cell.10
2.7 Base Station Controller (BSC) area.10
2.8 Location Area (LA).10
2.9 MSC area.10
2.10 VLR area.11
2.11 Zones for Regional Subscription.11
2.12 Service area.11
3 The entities of the mobile system.12
3.1 The Home Location Register (HLR) .12
3.2 The Visitor Location Register (VLR) .13
3.3 The Authentication Centre (AuC).13
3.4 The Equipment Identity Register (EIR) .14
3.5 The Mobile-services Switching Centre (MSC) .14
3.6 The Gateway MSC (GMSC) .14
3.7 SMS Gateway MSC (SMS-GMSC).14
3.8 SMS Interworking MSC.14
3.9 The Interworking Function (IWF).14
3.10 The Base Station System (BSS).15
3.11 The Mobile Station (MS) .15
4 Configuration of a Public Land Mobile Network .15
4.1 General .15
4.2 Basic configuration.15
5 PLMN interfaces.17
5.1 General .17
5.2 Interface between the MSC and Base Station System (A-interface) .17
5.3 Interface between BSC and BTS (Abis-interface) .17
5.4 Interface between the MSC and its associated VLR (B-interface).17
5.5 Interface between the HLR and the MSC (C-interface).17
5.6 Interface between the HLR and the VLR (D-interface).17
5.7 Interface between MSCs (E-interface).18
5.8 Interface between MSC and EIR (F-interface).18
5.9 Interface between VLRs (G-interface) .18
5.10 Interface between HLR and AuC (H-Interface).18
5.11 Interface between Mobile Station and Base Station System (Um-interface).18
6 Interface between the fixed networks and the MSC.18
History.19

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ETS 300 522 (GSM 03.02 version 4.2.1): November 1996
Foreword
This third edition European Telecommunication Standard (ETS) has been produced by the Special Mobile
Group (SMG) Technical Committee of the European Telecommunications Standards Institute (ETSI).
This ETS defines the possible network architecture of a Public Land Mobile Network (PLMN) within the
Digital cellular telecommunications system (Phase 2).
This ETS corresponds to GSM Technical Specification (GSM-TS) GSM 03.02 version 4.2.1.
Reference is made within this ETS to GSM-TSs (note).
Reference is also made within this ETS to GSM xx.xx. series. The specifications in the series can be
identified, with their full title, within the normative reference Clause of this ETS by the first two digits of
their GSM reference number e.g. GSM 09.xx-series, refers to GSM 09.01, GSM 09.02 etc.
NOTE: TC-SMG has produced documents which give the technical specifications for the
implementation of the Digital cellular telecommunications system. Historically, these
documents have been identified as GSM Technical Specifications (GSM-TSs). These
TSs may have subsequently become I-ETSs (Phase 1), or ETSs (Phase 2), whilst
others may become ETSI Technical Reports (ETRs). GSM-TSs are, for editorial
reasons, still referred to in current GSM ETSs.
Transposition dates
Date of adoption of this ETS: 4 October 1996
Date of latest announcement of this ETS (doa): 29 February 1997
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 31 August 1997
Date of withdrawal of any conflicting National Standard (dow): 31 August 1997

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ETS 300 522 (GSM 03.02 version 4.2.1): November 1996
1 Scope
The purpose of this third edition European Telecommunication Standard (ETS) is to present the possible
architectures of the mobile system. Clause 3 of this ETS contains a definition of the different functional
entities needed to support the mobile service. In clause 4, the configuration of a PLMN is described as
well as the organization of the functional entities; the configuration presented is the most general in order
to cope with all the possible implementations which can be imagined in the different countries. To illustrate
that purpose, some examples of possible configurations are presented. Clause 5 of this ETS contains a
brief description of the interfaces involved which shows the principle of the organization considered.
1.1 Normative references
This ETS incorporates by dated and undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications
apply to this ETS only when incorporated in it by amendment or revision. For undated references, the
latest edition of the publication referred to applies.
[1] GSM 01.04 (ETR 100): "Digital cellular telecommunications system (Phase 2);
Abbreviations and acronyms".
[2] GSM 02.16 (ETS 300 508): "Digital cellular telecommunications system
(Phase 2); International Mobile station Equipment Identities (IMEI)".
[3] GSM 03.03 (ETS 300 523): "Digital cellular telecommunications system
(Phase 2); Numbering, addressing and identification".
[4] GSM 03.04 (ETS 300 524): "Digital cellular telecommunications system
(Phase 2); Signalling requirements relating to routeing of calls to mobile
subscribers".
[5] GSM 03.08 (ETS 300 526): "Digital cellular telecommunications system
(Phase 2); Organization of subscriber data".
[6] GSM 03.09 (ETS 300 527): "Digital cellular telecommunications system
(Phase 2); Handover procedures".
[7] GSM 03.12 (ETS 300 530): "Digital cellular telecommunications system
(Phase 2); Location registration procedures".
[8] GSM 03.20 (ETS 300 534): "Digital cellular telecommunications system
(Phase 2); Security related network functions".
[9] GSM 04.02 (ETS 300 551): "Digital cellular telecommunications system
(Phase 2); GSM Public Land Mobile Network (PLMN) access reference
configuration".
[10] GSM 08.01 (ETS 300 587-1): "Digital cellular telecommunications system
(Phase 2); Base Station System - Mobile-services Switching Centre (BSS -
MSC) interface; General aspects".

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[11] GSM 08.02 (ETS 300 587-2): "Digital cellular telecommunications system
(Phase 2); Base Station System - Mobile-services Switching Centre (BSS -
MSC) interface; Interface principles".
[12] GSM 08.04 (ETS 300 588): "Digital cellular telecommunications system
(Phase 1); Base Station System - Mobile-services Switching Centre (BSS -
MSC) interface; Layer 1 specification".
[13] GSM 08.06 (ETS 300 589): "Digital cellular telecommunications system
(Phase 2); Signalling transport mechanism specification for the Base Station
System - Mobile-services Switching Centre (BSS - MSC) interface".
[14] GSM 08.08 (ETS 300 590): "Digital cellular telecommunications system
(Phase 2); Mobile Switching Centre - Base Station System (MSC - BSS)
interface; Layer 3 specification".
[15] GSM 08.20 (ETS 300 591): "Digital cellular telecommunications system
(Phase 2); Rate adaption on the Base Station System - Mobile-services
Switching Centre (BSS - MSC) interface".
[16] GSM 08.51 (ETS 300 592): "Digital cellular telecommunications system
(Phase 2); Base Station Controller - Base Transceiver Station (BSC - BTS)
interface; General aspects".
[17] GSM 08.52 (ETS 300 593): "Digital cellular telecommunications system
(Phase 2); Base Station Controller - Base Transceiver Station (BSC - BTS)
interface; Interface principles".
[18] GSM 08.54 (ETS 300 594): "Digital cellular telecommunications system
(Phase 2); Base Station Controller (BSC) to Base Transceiver Station (BTS)
interface; Layer 1 structure of physical circuits".
[19] GSM 08.56 (ETS 300 595): "Digital cellular telecommunications system
(Phase 2); Base Station Controller (BSC) to Base Transceiver Station (BTS);
Layer 2 specification".
[20] GSM 08.58 (ETS 300 596): "Digital cellular telecommunications system
(Phase 2); Base Station Controller (BSC) to Base Transceiver Station (BTS)
interface; Layer 3 specification".
[21] GSM 08.60 (ETS 300 597): "Digital cellular telecommunications system
(Phase 2); Inband control of remote transcoders and rate adaptors".
[22] GSM 08.61 (ETS 300 598): "Digital cellular telecommunications system
(Phase 2); Inband control of remote transcoders and rate adaptors (half rate)"
[23] GSM 09.02 (ETS 300 599): "Digital cellular telecommunications system
(Phase 2); Mobile Application Part (MAP) specification".
[24] GSM 09.03 (ETS 300 600): "Digital cellular telecommunications system
(Phase 2); Signalling requirements on interworking between the Integrated
Services Digital Network (ISDN) or Public Switched Telephone Network (PSTN)
and the Public Land Mobile Network (PLMN)".
[25] GSM 09.04 (ETS 300 601): "Digital cellular telecommunications system
(Phase 2); Interworking between the Public Land Mobile Network (PLMN) and
the Circuit Switched Public Data Network (CSPDN)".

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[26] GSM 09.05 (ETS 300 602): "Digital cellular telecommunications system
(Phase 2); Interworking between the Public Land Mobile Network (PLMN) and
the Packet Switched Public Data Network (PSPDN) for Packet
Assembly/Disassembly facility (PAD) access".
[27] GSM 09.06 (ETS 300 603): "Digital cellular telecommunications system
(Phase 2); Interworking between a Public Land Mobile Network (PLMN) and a
Packet Switched Public Data Network/Integrated Services Digital Network
(PSPDN/ISDN) for the support of packet switched data transmission services".
[28] GSM 09.07 (ETS 300 604): "Digital cellular telecommunications system
(Phase 2); General requirements on interworking between the Public Land
Mobile Network (PLMN) and the Integrated Services Digital Network (ISDN) or
Public Switched Telephone Network (PSTN)".
[29] GSM 09.10 (ETS 300 605): "Digital cellular telecommunications system
(Phase 2); Information element mapping between Mobile Station - Base Station
System and BSS - Mobile-services Switching Centre (MS - BSS - MSC);
Signalling procedures and the Mobile Application Part (MAP)".
[30] GSM 09.11 (ETS 300 606): "Digital cellular telecommunications system
(Phase 2); Signalling interworking for supplementary services".
2 Definitions and abbreviations
In addition to the abbreviations given in the remainder of this clause others are listed in GSM 01.04.
2.1 Location register
To establish a call to a mobile station the network must know where this mobile station is located. This
information is stored in a function named location register.
2.1.1 Home Location Register (HLR)
The Home Location Register (HLR) is the location register to which a mobile subscriber is assigned for
record purposes such as subscriber information.
2.1.2 Visitor Location Register (VLR)
The Visitor Location Register (VLR) is the location register, other than the HLR, used by an MSC to
retrieve information for, e.g. handling of calls to or from a roaming mobile station currently located in its
area.
2.2 Authentication Centre (AuC)
The Authentication Centre (AuC) is an entity which stores data for each mobile subscriber to allow the
International Mobile Subscriber Identity (IMSI) to be authenticated and to allow communication over the
radio path between the mobile station and the network to be ciphered. The AuC transmits the data needed
for authentication and ciphering via the HLR to the VLR and MSC which need to authenticate a mobile
station.
The procedures used for authentication and ciphering are described more fully in GSM 03.20.
2.3 Equipment Identity Register (EIR)
The Equipment Identity Register (EIR) in the GSM system is the logical entity which is responsible for
storing in the network the International Mobile Equipment Identities (IMEIs), used in the GSM system.
The equipment is classified as "white listed", "grey listed", "black listed" or it may be unknown as specified
in GSM 02.16 and GSM 09.02.

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2.4 Mobile-services Switching Centre (MSC)
The Mobile-services Switching Centre (MSC) constitutes the interface between the radio system and the
fixed networks. The MSC performs all necessary functions in order to handle the calls to and from the
mobile stations.
In order to obtain radio coverage of a given geographical area a number of base stations are normally
required; i.e. each MSC would thus have to interface several base stations. In addition several MSCs may
be require
...