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TECHNICAL SPECIFICATION
Digital cellular telecommunications system (Phase 2+) (GSM);
Universal Mobile Telecommunications System (UMTS);
LTE;
Network architecture
(3GPP TS 23.002 version 15.0.0 Release 15)
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3GPP TS 23.002 version 15.0.0 Release 15 1 ETSI TS 123 002 V15.0.0 (2018-07)
Reference
RTS/TSGS-0223002vf00
Keywords
GSM,LTE,UMTS
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ETSI
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3GPP TS 23.002 version 15.0.0 Release 15 2 ETSI TS 123 002 V15.0.0 (2018-07)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
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Foreword
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or
GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables.
The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under
.
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
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3GPP TS 23.002 version 15.0.0 Release 15 3 ETSI TS 123 002 V15.0.0 (2018-07)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 12
Introduction . 12
1 Scope . 13
2 References . 13
3 Definitions and abbreviations . 19
3.1 Public Land Mobile Network (PLMN) . 19
3.2 Core Network (CN) and Access Network (AN) . 19
3.3 Circuit Switched (CS) and Packet Switched (PS) Domains . 19
3.3.1 CS Domain. 20
3.3.2 PS Domain . 20
3.3a IP Multimedia subsystem (IMS) . 20
3.4 Location register . 20
3.5 Cell . 21
3.6 Base Station Controller (BSC) area . 21
3.7 Radio Network Controller (RNC) area . 21
3.8 Location Area (LA) . 21
3.9 Routing Area (RA) . 21
3.9a Tracking Area (TA) . 21
3.10 MSC area . 21
3.11 VLR area . 21
3.12 SGSN area . 21
3.13 Zones for Regional Subscription . 21
3.14 Service area . 22
3.15 Group call area . 22
3.15a MME Area. 22
3.16 Pool-area. 22
3.17 Serving GW Service Area . 22
4 The basic entities of the mobile system . 22
4.1 The Core Network (CN) entities . 23
4.1.1 Entities common to the PS and CS domains . 23
4.1.1.1 The Home Subscriber Server (HSS) . 23
4.1.1.1.1 The Home Location Register (HLR) . 24
4.1.1.1.2 The Authentication Centre (AuC) . 24
4.1.1.1.3 HSS logical functions . 24
4.1.1.2 The Visitor Location Register (VLR) . 26
4.1.1.3 (void) . 27
4.1.1.4 The Equipment Identity Register (EIR) . 27
4.1.1.5 SMS Gateway MSC (SMS-GMSC) . 27
4.1.1.6 SMS Interworking MSC (SMS-IWMSC) . 27
4.1.1.7 Subscription Locator Function (SLF). 27
4.1.2 Entities of the CS domain . 27
4.1.2.1 The Mobile-services Switching Centre (MSC) . 27
4.1.2.1.1 MSC Server . 28
4.1.2.1.2 Circuit Switched - Media Gateway Function (CS-MGW) . 28
4.1.2.2 The Gateway MSC (GMSC) . 29
4.1.2.2.1 Gateway MSC Server (GMSC Server) . 29
4.1.2.3 The Interworking Function (IWF) . 29
4.1.3 Entities of the GPRS PS domain . 29
4.1.3.1 Serving GPRS Support Node (SGSN) . 30
ETSI
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3GPP TS 23.002 version 15.0.0 Release 15 4 ETSI TS 123 002 V15.0.0 (2018-07)
4.1.3.2 Gateway GPRS Support Node (GGSN) . 30
4.1.3.3 Void. 30
4.1.4 Entities of the EPC PS Domain . 30
4.1.4.1 MME . 30
4.1.4.2 Gateways . 31
4.1.4.2.1 Serving GW . 31
4.1.4.2.2 PDN GW . 32
4.1.4.2.3 Local GW (L-GW) . 33
4.1.4.3 SGSN . 33
4.1.4.4 Trusted and Untrusted Non-3GPP Access Network . 33
4.1.4.5 ePDG . 33
4.1.4.6 3GPP AAA Server . 34
4.1.4.7 3GPP AAA Proxy . 34
4.1.4.8 ANDSF . 34
4.1.5 Border Gateway (BG)] . 34
4.2 The Access Network (AN) entities . 34
4.2.1 The Base Station System (BSS) . 35
4.2.1.1 Base Station Controller (BSC) . 35
4.2.1.2 Base Transceiver Station (BTS) . 35
4.2.2 The Radio Network System (RNS) . 35
4.2.2.1 Radio Network Controller (RNC) . 35
4.2.2.2 Node B . 36
4.2.3 Access Network elements for E-UTRAN . 36
4.2.3.1 E-UTRAN Node B (eNB) . 36
4.2.3.2 Evolved UTRAN . 36
4.3 The Mobile Station (MS) . 36
4.4 User Equipment (UE) . 36
4a The specific entities of the 3GPP system . 36
4a.1 The Group Call Register (GCR) entity . 36
4a.2 (void) . 37
4a.3 The Location Services (LCS) entities . 37
4a.3.1 Location Services (LCS) entities in RAN . 37
4a.3.2 Gateway Mobile Location Centre (GMLC) . 38
4a.3.3 Location Measurement Unit (LMU) . 38
4a.3.4 Evolved Serving Mobile Location Centre (E-SMLC) . 39
4a.4 CAMEL entities . 39
4a.4.1 GSM Service Control Function (gsmSCF) . 39
4a.4.2 GSM Service Switching Function (gsmSSF) . 39
4a.4.3 GSM Specialised Resource Function (gsmSRF) . 39
4a.4.4 GPRS Service Switching Function (gprsSSF) . 39
4a.5 CBS-specific entities . 39
4a.5.1 Cell Broadcast Centre (CBC). 40
4a.6 Number Portability Specific entities . 40
4a.6.1 IN-based solution: Number Portability Database (NPDB) . 40
4a.6.2 Signalling Relay-based solution: Mobile Number Portability/Signalling Relay function (MNP-SRF) . 40
4a.7 IP Multimedia (IM) Core Network (CN) Subsystem entities . 40
4a.7.1 Call Session Control Function (CSCF) . 40
4a.7.2 Media Gateway Control Function (MGCF) . 40
4a.7.3 IP Multimedia Subsystem - Media Gateway Function (IMS-MGW) . 41
4a.7.4 Multimedia Resource Function Controller (MRFC) . 41
4a.7.4a Multimedia Resource Function Processor (MRFP) . 41
4a.7.4b Media Resource Broker (MRB) . 41
4a.7.5 Void . 42
4a.7.6 Breakout Gateway Control Function (BGCF) . 42
4a.7.7 Application Server (AS) . 42
4a.7.8 Interconnection Border Control Function (IBCF). 42
4a.7.9 Transition Gateway (TrGW) . 43
4a.7.10 Location Retrieval Function (LRF) . 43
4a.7.11 Service Centralization and Continuity Application Server (SCC AS) . 43
4a.7.11a Emergency Access Transfer Function (EATF) . 43
4a.7.12 Access Transfer Control Function (ATCF) . 43
ETSI
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3GPP TS 23.002 version 15.0.0 Release 15 5 ETSI TS 123 002 V15.0.0 (2018-07)
4a.7.13 Access Transfer Gateway (ATGW) . 43
4a.8 Signalling Gateway Function (SGW) . 43
4a.9 Global Text Telephony Specific entities . 43
4a.10 Security Gateway (SEG) . 44
4a.11 Application Function (AF) . 44
4a.12 Void . 44
4a.13 3GPP/WLAN Interworking entities . 44
4a.13.1 WLAN UE . 44
4a.13.2 3GPP AAA Proxy . 44
4a.13.3 3GPP AAA Server . 44
4a.13.4 WLAN Access Gateway (WAG) . 44
4a.13.5 Packet Data Gateway (PDG) . 44
4a.13.6 Home Agent (HA) . 44
4a.14 Multimedia Broadcast Multicast Service (MBMS) specific entities . 45
4a.14.1 General . 45
4a.14.2 Broadcast-Multicast Service Centre (BM-SC). 45
4a.14.3 MBMS-GW . 45
4a.14.4 Multi-cell/multicast Coordination Entity (MCE) . 45
4a.15 Void . 45
4a.16 GUP Server . 45
4a.17 Policy and Charging Rules Function (PCRF) . 45
4a.18 Policy and Charging Enforcement Function (PCEF) . 46
4a.19 Support of Short Message Service over generic 3GPP Internet Protocol access (SMSIP) specific entities . 46
4a.19.1 General . 46
4a.19.2 IP-Short-Message-Gateway (IP-SM-GW) . 46
4a.20 Subscription Profile Repository (SPR) . 46
4a.21 Service Data Flow Based Credit Control Function . 46
4a.22 Offline Charging System (OFCS) . 46
4a.23 Online Charging System (OCS) . 46
4a.24 Bearer Binding and Event Reporting Function (BBERF) . 46
4a.25 Home (e)NodeB entities . 47
4a.25.1 Home NodeB Subsystem (HNS) . 47
4a.25.2 Home eNodeB Subsystem (HeNS) . 47
4a.25.3 CSG List Server . 47
4a.25.4 CSG Subscriber Server (CSS) . 47
4a.26 Application Front Ends (AFE) . 48
4a.27 User Data Repository (UDR) . 48
4a.28 Traffic Detection Function (TDF) . 48
4a.29 Specific entities to facilitate communications with packet data networks and applications . 48
4a.29.1 Machine Type Communication-InterWorking Function (MTC-IWF) . 48
4a.29.2 Machine Type Communication- Authentication, Authorization and Accounting (MTC-AAA) . 48
4a.29.3 Service Capability Exposure Function (SCEF) . 48
4a.30 TCP Proxy Function . 49
4a.31 Specific entities for Packet Switched Streaming (PSS) Service . 49
4a.31.1 Packet Switched Streaming Service Server (PSS Server) . 49
4a.32 Specific entities for Group Communication System Enablers for LTE (GCSE_LTE). 49
4a.32.1 Group Communication Service Application Server (GCS AS) . 49
4a.3
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