3GPP Overall Architecture

1. TDF-C
TDF-U
PGW-C
PGW-U
PDN
SGi
(S8 for Roaming)
29.281 GTPv1-U
29.274 GTPv2-C
29.214
Diameter
29.215
Diameter
32.251
Diameter
29.061
PLMN Interworking
Sxb
29.244 PFCP
Sxc
29.244 PFCP
29.212 Diameter
29.213 Sig Flow
MSC/
VLR
GERAN
(BSS)
A
GMSC
CS-MGW CS-MGW
PSTN
CS
Copyright © 2021 Muneaki Ogawa (twitter: @nickel0, GitHub: @nickel0)
This diagram is released under the CC BY-NC-SA 4.0 License.
UE Um
NbUP
29.415
29.007 PLMN - ISDN/PSTN Interworking
29.011 Supplementary services
29.002 MAP
SGSN
UTRAN
(RNS)
Gs
SGs
PCRF
OCS
S4
GGSN
HSS/
HLR
Gr/S6d
Sh
EIR
Gf
Gd/Gdd
UDR
5G-EIR
PDN
Cx
GPRS
Common
SPR
Sp
UE
Nudr(for Policy)
29.519
N5g-eir
29.511
Nudr
29.504,29.505
Uu
24.008 Layer3 (CC/MM/SM)
GPRS/UMTS
Stage 2
23.060 GPRS Service
23.101 UMTS Architecture
23.107 UMTS QoS
23.108 UMTS Layer3(CC/MM/SM)
23.110 UMTS Access Stratum
Security
33.102 3G Security Architecture
Unspecified
29.219 Diameter
29.016 Service
29.018 Layer3
SLF
29.118
SGsAP
S16
29.274
GTPv2-C
Gn
29.274
GTPv2-C
S12
IuPs
Gb
E
C
Nc
Mc
Nb
Gc
F
Sy
Gx
S9
Gn
(Gp for Roaming)
IWF
ISUP
29.281 GTPv1-U
29.060 GTPv1-C
AS
P-CSCF
IMS-AGW
Iq
IBCF
TrGW
Ix
Mb
S-CSCF
ISC
Mw
I-CSCF
MGCF
IMS-MGW
Mn
BGCF
Mi
Mg
Mw
Mb
Mg
Mx
Mj
IMS
IMS
E-CSCF PSAP
RFC 7090 PSAP Callback
Mm
Mx
LRF
Sh
Ml
IP-SM-GW
Izi
Ici
ISC
Gx
Gy
Sd
S5-U
Rx
PGW-C
(A-)SMF
PGW-U
(PSA-)UPF
N4
PCF
CHF
N7
N40
N10
N15
I-UPF N9 DN
N5
NWDAF
N23
29.502
Nsmf
29.512 Npcf_SMPolicyCtrl
29.513 PCC sig & QoS mapping
29.514 Npcf_
PolicyAuth
Nchf_ConvergedChg
32.291
29.594
Nchf_SpendingLimitCtrl
29.520
Nnwdaf
N16
BSF
32.290 SBI Charging
I-SMF N16a
N4
29.244 PFCP
29.244
PFCP
29.281 GTPv1-U
29.561
Interworking
29.521
Nbsf
29.214
Diameter
IuCS
Cx
25.300 UTRAN General description
25.401 UTRAN Overall description
RRC(CP) 25.331
PDCP 25.323
RLC 25.322
MAC 25.321
PHY
25.201
25.21x
25.301 ProtoArch
Common (2G/3G/4G/5G)
23.002 Network Architecture
23.003 Numbering, addressing and identification
23.040 SMS
23.108 Layer3 (Procedures)
23.122 MS in Idle mode (PLMN selection, roaming)
24.007 Layer3 (General)
NG-RAN
AMF
N3
N2
UDM
AUSF
N8
N12
N13
NSSF
N20
SMSF
N17
5GC
N14
N34
UE
N1
29.531 Nnssf
29.509
Nausf
29.503
Nudm
29.540
Nsmsf
29.518
Namf
38.410 NG General
38.411 NG Layer1
38.412 NG Signalling
38.413 NG AP
38.414 NG Data Transport
24.501 NAS
24.526 UE Policies
29.281 GTPv1-U
38.415 PDU session user plane protocol
N21
5GS
Stage 1
22.261 Service requirement
Stage 2
23.501 Architecture
23.502 Procedures
23.503 PCC Framework
32.290 Charging
38.300 NR/NG-RAN
38.401 NG-RAN Architecture
Stage 3
29.500 SBA
29.501 SBA Guidelines
29.571 Data Types
Security
33.501 5GS Security
Network management
28.530 Concepts
28.531 Provisioning Stage 1
28.532 Provisioning Stage 2, 3
28.533 Architecture
28.540 NRM Stage 1
28.541 NRM Stage 2,3
28.545 Fault Supervision
28.550 Performance Assurance
28.552 Performance Measurements
28.554 E2E KPI
CU-CP
CU-UP
DU
DU
F1-C
E1
F1-U
Xn-C
Xn-U
38.420 Xn General
38.421 Xn Layer1
38.422 Xn Signalling
38.423 Xn AP
38.424 Xn Data Transport
38.300 Overall description
38.401 NG-RAN Architecture
RRC(CP)
SDAP(UP)
38.331
37.324
PDCP 38.323
RLC 38.322
MAC 38.321
PHY
38.201
38.21x
RRC(CP) 36.331
PDCP 36.323
RLC 36.322
MAC 36.321
PHY
36.201
36.21x
MME
E-UTRAN
SGW-C
SGW-U
Sxa
S1-U
S1-MME
DNS
S10
UE
24.301 NAS
EPS
Stage 1
22.278 Service Requirement
Stage 2
23.401 EPS Architecture
23.203 PCC Framework
23.204 SMS over IP
23.168 EPC ETWS
23.272 CS Fallback, SMS
32.240 Charging
Security
33.401 EPS Security
29.272
Diameter
29.281 GTPv1-U
29.274 GTPv2-C
S11
36.410 S1 General
36.411 S1 Layer 1
36.412 S1 Signalling
36.413 S1 AP
36.414 S1 Data transport
29.303
DNS
29.272
Diameter
29.338 Diameter
29.274
GTPv2-C
29.244 PFCP
29.274
GTPv2-C
S5-C
S3
SMSC
DRA 29.274
GTPv2-C
MAP Diameter
TS 29.305
EPC
S6a
SGd
S13
N26
to/from IP-SM-GW
X2
36.420 X2 General
36.421 X2 Layer1
36.422 X2 Signalling
36.423 X2 AP
36.424 X2 Data Transport
36.425 X2 U-Plane
36.300 Overall description
36.401 E-UTRAN Architecture
37.340 NR Multiconnectivity (NSA)
22.340 IMS Requiremen
23.167 Emergency call architecturet
23.228 IMS Architecture
24.229 IMS/SIP Signalling
23.216 SRVCC
23.237 IMS Service continuity
24.237 IMS Service continutiy
23.204 SMS over IP
24.341 SMS over IP
29.165
II-NNI
RFC 3261 SIP
RFC 8866 SDP
29.228
Diameter
29.228
Diameter
29.329
Diameter
29.329
Diameter
29.212 Diameter
29.213 Sig Flow
29.165
II-NNI
Sh
S5-U
S5-C
Rx
29.502
Nsmf
LTE-Uu
NR-Uu
RRC
PDCP
SDAP
PDCP
26.071 AMR General
26.171 AMR-WB General
26.441 EVS General
Trusted
non-3GPP
PCRF
HSS
Untrusted
non-3GPP
3GPP AAA
ePDG
Gxb
SWx
SWa
STa
SWn
PGW Gx
S2a
S2b
S6b
PDN
SGi
GTP
GTP
UE S2c
DSMIPv6 (RFC5555)
SWm
EPC non-3GPP Access
5GC non-3GPP Access
23.402 non-3GPP access
33.402 non-3GPP access Security
Untrusted
non-3GPP
UE
Trusted Non-3GPP Access Network (TNAN)
TNAP TNGF
NWt
Ta
Yt
N3IWF
NWu
Y2
Y1
AMF
N1 UPF
N3
DN
N6
N3
SMF
23.501 4.2.8.2 5GC non-3GPP
CBC/
CBE
PWS-IWF
/CBCF
N50
SBc
29.168 SBc-AP
29.168 SBc-AP
SCEF
NEF
SCS/AS
AF
23.682 MTC Architecture
29.122 SCEF
T8
29.522 NEF
N33
NRF
Nnrf 29.510
SCP
NF
(C)
NF
(P)
Model C - Indirect comm w/o delegated discovery
Model D - Indirect comm w delegated discovery
4G Identifier 5G Identifier
IMSI - International Mobile Subscriber Identity SUPI - Subscription Permanent Identifier
NAI - Network Access Identifier SUPI - Subscription Permanent Identifier
n/a SUCI - Subscription Concealed Identifier
IMEI - International Mobile Equipment Identity PEI - Permanent Equipment Identifier
GUTI - Globally Unique Temporary UE Identify 5G-GUTI - 5G Globally Unique Temporary UE Identify
APN - Access Point Name DNN - Data Network Name
ECGI - EUTRA Cell Global Identifier NCGI - NR Cell Global Identity
ECI - EUTRA Cell Identity NCI - NR Cell Identity
MSISDN - Mobile Station ISDN GPSI - Generic Public Subscription Identifier
External Identifier GPSI - Generic Public Subscription Identifier
n/a S-NSSAI - Single-Network Slice Selection Assistance Information
CAPIF
29.222 CAPIF
33.122 CAPIF Security
NSSAAF
NSACF
N59
N58
N80 N81
N29
N30
N37
N51
N52
N82
29.526 Nnssaaf
29.536 Nnsacf
GMLC/
LRF
NL2
SLg
NL5
NL6
LMF
NL1
E-SMLC
SLs
N22
to/from GMLC/LRF
23.271 2G~4G LCS
23.273 5G LCS
Ml
Stage 2
23.205 Bearer-independent CS-CN
Mc
29.232 H.247
D
BICC
Gi
29.507 Npcf_AMPolicyCtrl
29.525 Npcf_UEPolicyCtrl
29.508
Nsmf_Expo
Direct Tunnel
29.518
Namf
Le
29.515
Ngmlc
29.517 Naf_EventExposure
29.523 Npcf_EventExposure (NEF)
29.554 Npcf_BDTPolicyCtrl (NEF)
29.524 Cause mapping
29.524 Cause
mapping
N6
AAnF
29.535 Naanf_AKMA
N63
N61
N62
N28
29.534 Npcf_
AMPolicyAuth
(5G-DDNMF)
29.542 Nsmf_NIDD
USIM
31.101 UICC Interface
31.102 USIM Application
31.111 USIM Application Toolkit
31.121 USIM Application Test Spec
31.122 USIM Conformance Test Spec
SoR-AF
29.550 Nsoraf
23.122 Annex C
29.552 NWDA Signalling
29.562 Nhss_ims
(CSCF/IMS-AS)
N35
29.563
Nhss (UDM)
29.564 Nupf_EventExposure
29.564 Nupf_EventExposure
29.572
Nlmf
29.591 Nnef_EventExposure(NWDAF)
3GPP Overall Architecture and Specifications
AF 29.557 Naf
5G-DDNMF 29.555 N5g-ddnmf
EASDF 29.556 Neasdf
29.558 Eees
TSCTSF 29.565 Ntsctsf
DCCF 29.574 Ndccf
ADRF 29.575 Nadrf
MFAF 29.576 Nmfaf
23.304 ProSe
23.548 Edge Computing Enhancement
23.501 4.4.8 Time Sensitive Communication
23.288 Network Data Analytics
~Release-15
Release-16
Release-17
5G Network Function Abbreviations
Release-15
5G-EIR - 5G-Equipment Identity Register
AAnF - AKMA (Authentication and Key Management for
Applications) Anchor Function
AF - Application Function
AMF - Access and Mobility Management Function
AUSF - Authentication Server Function
ARPF - Authentication credential Repository and Processing
Function
BSF - Binding Support Function
CAPIF - Common API Framework for 3GPP northbound APIs
CHF - Charging Function
I-UPF - Intermediate UPF
LMF - Location Management Function
LRF - Location Retrieval Function
N3IWF - Non-3GPP InterWorking Function
NEF - Network Exposure Function
NRF - Network Repository Function
NSSF - Network Slice Selection Function
NWDAF - Network Data Analytics Function
PCF - Policy Control Function
SCP - Service Communication Proxy
SEAF - SEcurity Anchor Function.
SEPP - Security Edge Protection Proxy
SIDF - Subscription Identifier De-concealing Function
SMF - Session Management Function
SMSF - Short Message Service Function
TNAP - Trusted Non-3GPP Access Point
TNGF - Trusted Non-3GPP Gateway Function
TWIF - Trusted WLAN Interworking Function
UDM - Unified Data Management
UDR - Unified Data Repository
UDSF - Unstructured Data Storage Function
UPF - User Plane Function
Release-16
IPUPS - Inter PLMN UP Security
I-SMF - Intermediate SMF
NSSAAF - Network Slice-specific and SNPN Authentication and
Authorization Function
UCMF - UE radio Capability Management Function
SoR-AF - Steering of Roaming Application Function
Release-17
5G DDNMF - 5G Direct Discovery Name Management Function
ADRF - Analytics Data Repository Function
EASDF - Edge Application Server Discovery Function
MFAF - Messaging Framework Adaptor Function
DCCF - Data Collection Coordination Function
NSACF - Network Slice Admission Control Function
TSCTSF - Time Sensitive Communication and Time
Synchronization Function
UCMF
N55
SEAF
Nc
NL7
UPF
(IPUPS)
UPF
(IPUPS)
vSEPP hSEPP
VPLMN HPLMN
ARPF SIDF
N56
29.673 Nucmf
IMS Supplimentary Services
24.182 CAT
24.183 CRS
24.196 eCNAM
24.604 CDIV
24.605 CONF
24.606 MWI
24.607 OIP/OIR
24.608 TIP/TIR
24.610 HOLD
24.610 HOLD
24.611 ACR/CB
24.615 CW
24.616 MCID
24.623 XCAP
24.628 Announcement
24.629 ECT
24.647 AOC
24.654 CUG
4G and 5G Identifier mapping
N32
N9
SBI
SBI
5G Inter-PLMN Security
Release-17 Enhancements
UDR
HSS
(IMS)
UDR
C
S6c
23.040
SMS
N57
29.541 Nnef_SMContext (NIDD) (SMF)
29.551 Nnef_PFDmanagement (SMF)
Npd
23.501, 33.501
29.500, 29.573, 33.501
23.501 Annex G SCP Deployment example
N24 for
Roaming
N27 for Roaming
23.503 PCC
N31 for
Roaming
N36
N37
N38
N41
N42 for Roaming
N83
N11
PS
27.007 AT command for UE
35.205 MILENAGE
35.206 MILENAGE Algorithm
35.231 TUAK Algorithm
T6a
T6b
S6t
to/from PCRF
Rx,Nt
29.002 MAP
Nu
RCAF
Ns
Nq
29.405
Nq-AP
29.217 Diameter
Np
PFDF
Gw
Gwn
29.251 HTTP/JSON
Sponsored data
23.214 CUPS
29.250
HTTP/JSON
29.154 Diameter (Nt)
SLh/Lh
Lg/Lgd
MAP/Diameter
Gd/Gdd
OFCS
Gyn
Gz
Gzn
Charging
32.240 Architecture and Principles
32.250 CS domain
32.251 PS domain
32.253 CP data transfer
32.254 Exposure function North API
32.255 5G Data connectivity
32.256 5G Connectivity and mobility
32.270 MMS
32.271 LCS
32.272 PoC
32.273 MBMS
32.274 SMS
32.275 MMTel
32.276 VCS
32.277 ProSe
32.278 Monitoring Event
38.470 F1 General
38.471 F1 Layer1
38.472 F1 Signalling
38.473 F1 AP
38.474 F1 Data Transport
38.475 F1 U-Plane
38.460 E1 General
38.461 E1 Layer1
38.462 E1 Signalling
38.463 E1 AP
29.212 Diameter
29.213 Sig Flow
Charging stage 3
32.291 5GS Charging
32.293 Proxy function
32.296 OCS applications and IFs
32.295 CDR
23.297 CDR file format and transfer
23.298 CDR parameter description
23.299 Diameter Charging app