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Intro
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| Table of Contents | ||||||||||
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Telecommunication service models determine the delivery of communication services. AGILITY uses the service models described on this page to run predictions and provide network analysis. For a comprehensive list of all protocols, and interfaces that AGILITY supports for these models, see /wiki/spaces/~712020272113beb61f46609e5721d6521a154c/pages/3205956647.
4G-5G NSA Connectivity
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4G-5G
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The 4G-5g-NSA model includes the following captures required from NE interfaces:
eNodeB: X2
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NSA connectivity represents an interim step in the evolution of mobile networks, allowing for the introduction of 5G benefits while leveraging the existing 4G infrastructure for a smoother transition.
4G-5G NSA connectivity is the coexistence and collaboration between 4G and 5G networks in Non-Standalone mode. In this mode, 5G provides enhanced data speeds and capabilities while still relying on the existing 4G core network for certain functions.
Users with 5G-enabled devices can experience faster data speeds and lower latency when connected to 5G cells, while still maintaining connectivity through 4G when 5G is not available.
It allows for a gradual transition to full 5G standalone deployments as the 5G infrastructure is expanded and upgraded.
...
MME: S1_MME, S11, S6a
S-GW: S11, S5c
P-GW: S5c, Gx, Gy
PCRF: Sy
5G-SA Connectivity
5G-SA (Standalone) connectivity is the deployment of a fully independent 5G network architecture without any reliance on existing 4G infrastructure. In a 5G-SA network, both the radio access network (RAN) and the core network are built on native 5G specifications.
Network Element | NGAP Interfaces | PFCP Interfaces | HTTP2 Services Invoked | Notes |
AMF | N1/N2 | | Namf, Nausf,Nnssf, Nudm,Npcf, Nsmf, Nnrf | Essential capture point |
SMF | | N4 | Nsmf, Nudm, Npcf, Nnrf, Namf, Nchf | Essential capture point |
UDM | | | Nudr, Namf | More insight provided by this capture point. |
PCF | | | Nbsf, Nsmf, Nudr | More insight provided by this capture point. |
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5G-SA Captured Data Points
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5G-SA Data
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5G-SA (Standalone) data is the data connectivity and communication services facilitated through a fully independent 5G network architecture. Unlike 4G-5G NSA (Non-Standalone) deployments that rely on existing 4G infrastructure, 5G-SA operates with a standalone core network and radio access network (RAN).
The 5G-SA model includes captures of
...
data calls from:
gNodeB: N3
AMF: N2, Namf, Npcf, Nudm, Nsmf, Naf, Nnef, Nausf, Nnrf
SMF: N4, Nsmf, Nudm, Npcf, Nnrf, Namf, Nchf
UPF: N3, N4, N6
UDM: Nudr, Namf
PCF: Nbsf, Nsmf, Nudr
5G SA Captured Data Points Diagram
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...
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4G Data
4G data is the data connectivity and communication services facilitated through a 4G network architecture.
The 4G Data model includes captures of data calls from:
MME: S1_MME, S11, S6a
S-GW: S1u, S5c, S5u
P-GW: S5c, S5u, Gm, Gy, Gx
OCS: Gy, Sy, Ro
HSS: S6a, Cx, Sh
5G-SA Mobility
5G-SA (Standalone) data is the data connectivity and communication services facilitated through a fully independent 5G network architecture. Unlike 4G-5G NSA (Non-Standalone) deployments that rely on existing 4G infrastructure, 5G-SA operates with a standalone core network and radio access network (RAN).
The 5G-SA model includes captures of data calls from:5G-SA (Standalone) mobility is the mobile communication capabilities provided by a fully independent 5G network architecture. In the context of mobility, this encompasses the seamless and advanced connectivity solutions designed to cater to the dynamic and mobile nature of devices and users.
The 5G-S model includes captures of handover calls from:
gNodeB:
...
N2
O-CU:
...
N2 (O-Ran scenarios)
AMF: N2
UPF: N3, N6
5G SA
Xn based handover (handled directly between gNodeB’s)*(pending)
N2 based handover (Coordinated by AMF)
5G-SA Mobility Captured Data Points Diagram
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Inter-RAT / EPS Fallback 5G - 4G Mobility
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Inter-RAT (Radio Access Technology) or EPS (Evolved Packet System) Fallback in the context of 5G-4G mobility is the ability of a mobile device to seamlessly transition between 5G and 4G networks when moving across areas with different network technologies.
Inter-RAT mobility involves the smooth handover of a mobile device between different radio access technologies.
Method #1: 5G to 4G Inter-RAT Handover
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In this method, the N26 interface between AMF and MME uses a Forward Relocation procedure and session management context. Additionally, user plane tunnels in the core network are exchanged over from SMF/UPM to MME/S-GW.
Method #2: 5G to 4G Release with Redirection
In this method, the 5G radio connection is released with the 5G RRC Release instructing the UE to reselect to a 4G cell where a new radio connection can be started for the VoLTE call. In this case, the UE context is transferred from the AMF to the MME over the N26 interface.
The Inter-RAT / EPS Fallback 5G - 4G – Mobility Model captures:
eNodeB: X2
gNodeB: X2 (for 5G NSA configuration)
MME: S1_MME, S11, S6a
S-GW: S11, S5c
P-GW: S5c, S5u, SGi
AMF: N26, N2, S11
SMF: N4, Nsmf, Nudm, Npcf, Nnrf, Namf, Nchf
UPF: N3, N4, N6
Inter-RAT / EPS Fallback 5G - 4G Mobility Captured Data Points Diagram
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4G - Mobility
The 4G-Mobility model includes captures of data calls from: 4G mobility is the mobile communication capabilities provided by 4G network architecture. In the context of mobility, this encompasses the seamless and advanced connectivity solutions designed to cater to the dynamic and mobile nature of devices and users.
The 4G model includes captures of handover calls from:
MME: S1_MME, S11, S6a
S-GW: S1u, S5c, S5u
P-GW: S5c, S5u, Gm, Gy, Gx
4G - Voice & Video Services:
...
VoLTE
Voice over LTE (VoLTE) enables users to make voice calls while simultaneously using data services like web browsing or video streaming over the 4G Long-Term Evolution (LTE) network.
The Voice & Video Services: VoLTE Model captures:
MME: S1_MME, S11, SLs
S-GW: S1u, S5c, S5u
P-GW: S5c, S5u, Gm, Gy, Gx
OCS: Gy, Sy, Ro
HSS: S6a, Cx, Sh
S-CSCF: Mw, Mx, Mr, Mg, Mi, ISC, Cx
TAS: Mr
IBCF: Ici
MGCF: ISUP
Voice & Video Services: VoLTE Captured Data Points Diagram
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5G - Voice & Video Services: VoNR
...
Voice over New Radio (VoNR) enables the delivery of voice and video services over the 5G New Radio (NR) network. It is an evolution of the Voice over LTE (VoLTE) technology, specifically designed to take advantage of the capabilities offered by 5G networks.
VoNR Scenario
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1: Diameter Routing Agent (DRA)
Scenario 1 consists of a Diameter Routing Agent connected with 5G Core that supports Diameter, In this scenario, the Voice & Video Services: VoNR Model captures Voice / Video calls from:
gNodeB: N3
AMF: N2, HTTP2 SBA services
SMF: N4, HTTP2 SBA services
UPF: N3, N4, N6
UDM: HTTP2 SBA services
PCF: HTTP2 SBA services
I/S-CSCF: Mw, ISC, Cx
TAS: Sh
VoNR Scenario #1 Captured Data Points Diagram
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VoNR Scenario
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2 – Interworking Function
Scenario 2 consists of Diameter to HTTP2 using Interworking Function (IWF) connecting IMS with 5G Core through HTTP2 bus. In scenario 2, the Voice & Video Services: VoNR Model captures Voice / Video calls from:
gNodeB: N3
AMF: N2, HTTP2 SBA services
SMF: N4, HTTP2 SBA services
UPF: N3, N4, N6
UDM: HTTP2 SBA services
PCF: HTTP2 SBA services
I/S-CSCF: Mw, ISC, Cx
TAS: Sh
VoNR Scenario #2 Captured Data Points Diagram
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Model Coverage Table
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Technology
...
Service
...
Sub Service
...
Supported Procedures
...
Protocols
...
Interface
...
4G-5G NSA
...
Connectivity
...
...
Attach
...
S1AP
...
S1-MME
...
4G -5G NSA
...
Connectivity
...
...
Authentication
...
S1AP
...
S1-MME
...
4G -5G NSA
...
Connectivity
...
...
Authentication
...
Diameter
...
S6a
...
4G -5G NSA
...
Connectivity
...
...
Security Mode
...
S1AP
...
S1-MME
...
4G -5G NSA
...
Connectivity
...
...
Location Update
...
Diameter
...
S6a
...
4G -5G NSA
...
Connectivity
...
...
Session Establishment
...
GTPV2
...
S11
...
4G -5G NSA
...
Connectivity
...
...
Session Establishment
...
GTPV2
...
S5
...
4G -5G NSA
...
Connectivity
...
...
Policy control
...
Diameter
...
Gx
...
4G -5G NSA
...
Connectivity
...
...
online charging
...
Diameter
...
Gy
...
4G -5G NSA
...
Connectivity
...
...
Initial Context request
...
S1AP
...
S1-MME
...
4G -5G NSA
...
Connectivity
...
...
Bearer modification
...
GTPV2
...
S11
...
4G -5G NSA
...
Connectivity
...
...
Policy control
...
Diameter
...
Sy
...
4G -5G NSA
...
Connectivity
...
...
Session Delete
...
GTPV2
...
S11
...
4G -5G NSA
...
Connectivity
...
...
Session Delete
...
GTPV2
...
S5
...
4G -5G NSA
...
Connectivity
...
...
Detach
...
S1AP
...
S1-MME
...
4G -5G NSA
...
Connectivity
...
...
Context Release
...
S1AP
...
S1-MME
...
4G-5G NSA
...
Connectivity
...
...
Registration
...
SIP
...
IMS
...
5G SA
...
Connectivity
...
...
Service Registration
...
HTTP2
...
Nsmf
...
5G SA
...
Connectivity
...
...
online charging
...
HTTP2
...
Nsmf
...
5G SA
...
Connectivity
...
...
Policy control
...
HTTP2
...
Nsmf
...
5G SA
...
Connectivity
...
...
Registration
...
HTTP2
...
Nsmf
...
5G SA
...
Connectivity
...
...
BroadForward Binding
...
HTTP2
...
Nbsf
...
5G SA
...
Connectivity
...
...
Converged charging
...
HTTP2
...
Nchf
...
5G SA
...
Connectivity
...
...
Converged charging
...
HTTP2
...
Nchf
...
5G SA
...
Connectivity
...
...
Policy control
...
HTTP2
...
Nnrf
...
5G SA
...
Connectivity
...
...
DataRepository
...
HTTP2
...
Nudr
...
5G SA
...
Connectivity
...
...
Session Establishment
...
PFCP
...
N4
...
5G SA
...
Connectivity
...
...
Session modification
...
PFCP
...
N4
...
5G SA
...
Connectivity
...
...
Session Deletion
...
PFCP
...
N4
...
4G
...
VOLTE
...
Volte call conference
...
MO-Calling party establishment
...
SIP
...
IMS
...
4G
...
VOLTE
...
Volte call conference
...
MT-Called party establishment
...
SIP
...
IMS
...
4G
...
VOLTE
...
Volte call conference
...
Call forwarding/divert leg
...
SIP
...
IMS
...
4G
...
VOLTE
...
Volte call conference
...
Call Conference prep leg
...
SIP
...
IMS
...
4G
...
VOLTE
...
Volte call conference
...
Call conference server leg
...
SIP
...
IMS
...
4G
...
VOLTE
...
Volte call conference
...
call Hold
...
SIP
...
IMS
...
4G
...
VOLTE
...
Volte call conference
...
online charging
...
Diameter
...
Gx
...
4G
...
VOLTE
...
Volte call conference
...
online charging
...
Diameter
...
Gy
...
4G
...
VOLTE
...
Volte call conference
...
online charging
...
Diameter
...
Sy
...
4G
...
VOLTE
...
Volte call conference
...
Location info
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call conference
...
User Data
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call conference
...
Subscribe-Notifications
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call conference
...
AAA
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call conference
...
Authentication
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call conference
...
Session-Termination
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call conference
...
Authentication
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call conference
...
Spending-Limit
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call conference
...
Accounting
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call conference
...
Credit-Control Request
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call conference
...
Session-Termination
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call conference
...
AAA
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call conference
...
Server-Assignment
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call conference
...
Session Establishment
...
GTPV2
...
S5
...
4G
...
VOLTE
...
Volte call conference
...
Session Establishment
...
GTPV2
...
S8
...
4G
...
VOLTE
...
Volte call conference
...
Session modification
...
GTPV2
...
S8
...
4G
...
VOLTE
...
Volte call conference
...
Session termination
...
GTPV2
...
S8
...
4G
...
VOLTE
...
Volte call conference
...
Session modification
...
GTPV2
...
S5
...
4G
...
VOLTE
...
Volte call conference
...
Session termination
...
GTPV2
...
S5
...
4G
...
VOLTE
...
Volte call conference
...
Registration
...
SIP
...
IMS
...
4G
...
VOLTE
...
Volte call conference
...
Attach
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte call conference
...
Authentication
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte call conference
...
Security Mode
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte call conference
...
Initial Context request
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte call conference
...
Detach
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte call conference
...
Context Release
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte call forward
...
MO-Calling party establishment
...
SIP
...
IMS
...
4G
...
VOLTE
...
Volte call forward
...
MT-Called party establishment
...
SIP
...
IMS
...
4G
...
VOLTE
...
Volte call forward
...
Call forwarding/divert leg
...
SIP
...
IMS
...
4G
...
VOLTE
...
Volte call forward
...
Call Hold
...
SIP
...
IMS
...
4G
...
VOLTE
...
Volte call forward
...
online charging
...
Diameter
...
Gx
...
4G
...
VOLTE
...
Volte call forward
...
online charging
...
Diameter
...
Gy
...
4G
...
VOLTE
...
Volte call forward
...
online charging
...
Diameter
...
Sy
...
4G
...
VOLTE
...
Volte call forward
...
Location info
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call forward
...
User Data
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call forward
...
Subscribe-Notifications
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call forward
...
AAA
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call forward
...
Authentication
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call forward
...
Session-Termination
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call forward
...
Authentication
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call forward
...
Spending-Limit
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call forward
...
Accounting
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call forward
...
Credit-Control Request
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call forward
...
Session-Termination
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call forward
...
AAA
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call forward
...
Server-Assignment
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte call forward
...
Session Establishment
...
GTPV2
...
S5
...
4G
...
VOLTE
...
Volte call forward
...
Session Establishment
...
GTPV2
...
S8
...
4G
...
VOLTE
...
Volte call forward
...
Session modification
...
GTPV2
...
S8
...
4G
...
VOLTE
...
Volte call forward
...
Session termination
...
GTPV2
...
S8
...
4G
...
VOLTE
...
Volte call forward
...
Session modification
...
GTPV2
...
S5
...
4G
...
VOLTE
...
Volte call forward
...
Session termination
...
GTPV2
...
S5
...
4G
...
VOLTE
...
Volte call forward
...
Registration
...
SIP
...
IMS
...
4G
...
VOLTE
...
Volte call forward
...
Attach
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte call forward
...
Authentication
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte call forward
...
Security Mode
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte call forward
...
Initial Context request
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte call forward
...
Detach
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte call forward
...
Context Release
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte to Volte
...
MO-Calling party establishment
...
SIP
...
IMS
...
4G
...
VOLTE
...
Volte to Volte
...
MT-Called party establishment
...
SIP
...
IMS
...
4G
...
VOLTE
...
Volte to Volte
...
call Hold
...
SIP
...
IMS
...
4G
...
VOLTE
...
Volte to Volte
...
online charging
...
Diameter
...
Gx
...
4G
...
VOLTE
...
Volte to Volte
...
online charging
...
Diameter
...
Gy
...
4G
...
VOLTE
...
Volte to Volte
...
online charging
...
Diameter
...
Sy
...
4G
...
VOLTE
...
Volte to Volte
...
Location info
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to Volte
...
User Data
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to Volte
...
Subscribe-Notifications
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to Volte
...
AAA
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to Volte
...
Authentication
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to Volte
...
Session-Termination
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to Volte
...
Authentication
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to Volte
...
Spending-Limit
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to Volte
...
Accounting
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to Volte
...
Credit-Control Request
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to Volte
...
Session-Termination
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to Volte
...
AAA
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to Volte
...
Server-Assignment
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to Volte
...
Session Establishment
...
GTPV2
...
S5
...
4G
...
VOLTE
...
Volte to Volte
...
Session Establishment
...
GTPV2
...
S8
...
4G
...
VOLTE
...
Volte to Volte
...
Session modification
...
GTPV2
...
S8
...
4G
...
VOLTE
...
Volte to Volte
...
Session termination
...
GTPV2
...
S8
...
4G
...
VOLTE
...
Volte to Volte
...
Session modification
...
GTPV2
...
S5
...
4G
...
VOLTE
...
Volte to Volte
...
Session termination
...
GTPV2
...
S5
...
4G
...
VOLTE
...
Volte to Volte
...
Registration
...
SIP
...
IMS
...
4G
...
VOLTE
...
Volte to Volte
...
Attach
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte to Volte
...
Authentication
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte to Volte
...
Security Mode
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte to Volte
...
Initial Context request
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte to Volte
...
Detach
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte to Volte
...
Context Release
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte to PSTN
...
MO-Calling party establishment
...
SIP
...
IMS
...
4G
...
VOLTE
...
Volte to PSTN
...
call Hold
...
SIP
...
IMS
...
4G
...
VOLTE
...
Volte to PSTN
...
online charging
...
Diameter
...
Gx
...
4G
...
VOLTE
...
Volte to PSTN
...
online charging
...
Diameter
...
Gy
...
4G
...
VOLTE
...
Volte to PSTN
...
online charging
...
Diameter
...
Sy
...
4G
...
VOLTE
...
Volte to PSTN
...
Location info
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to PSTN
...
User Data
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to PSTN
...
Subscribe-Notifications
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to PSTN
...
AAA
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to PSTN
...
Authentication
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to PSTN
...
Session-Termination
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to PSTN
...
Authentication
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to PSTN
...
Spending-Limit
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to PSTN
...
Accounting
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to PSTN
...
Credit-Control Request
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to PSTN
...
Session-Termination
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to PSTN
...
AAA
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to PSTN
...
Server-Assignment
...
Diameter
...
IMS
...
4G
...
VOLTE
...
Volte to PSTN
...
Session Establishment
...
GTPV2
...
S5
...
4G
...
VOLTE
...
Volte to PSTN
...
Session Establishment
...
GTPV2
...
S8
...
4G
...
VOLTE
...
Volte to PSTN
...
Session modification
...
GTPV2
...
S8
...
4G
...
VOLTE
...
Volte to PSTN
...
Session termination
...
GTPV2
...
S8
...
4G
...
VOLTE
...
Volte to PSTN
...
Session modification
...
GTPV2
...
S5
...
4G
...
VOLTE
...
Volte to PSTN
...
Session termination
...
GTPV2
...
S5
...
4G
...
VOLTE
...
Volte to PSTN
...
Registration
...
SIP
...
IMS
...
4G
...
VOLTE
...
Volte to PSTN
...
Attach
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte to PSTN
...
Authentication
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte to PSTN
...
Security Mode
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte to PSTN
...
Initial Context request
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte to PSTN
...
Detach
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte to PSTN
...
Context Release
...
S1AP
...
S1-MME
...
4G
...
E911
...
...
Calling party establishment
...
SIP
...
IMS
...
4G
...
E911
...
...
Called party establishment
...
SIP
...
IMS
...
4G
...
E911
...
...
Call forwarding leg
...
SIP
...
IMS
...
4G
...
E911
...
...
online charging
...
Diameter
...
Gx
...
4G
...
E911
...
...
online charging
...
Diameter
...
Gy
...
4G
...
E911
...
...
online charging
...
Diameter
...
Sy
...
4G
...
E911
...
...
Session Establishment
...
GTPV2
...
S5
...
4G
...
E911
...
...
Session Establishment
...
GTPV2
...
S8
...
4G
...
E911
...
...
Registration
...
SIP
...
IMS
...
4G
...
E911
...
...
NAS Signalling
...
S1AP
...
S1-MME
...
4G
...
E911
...
...
Mobile Location Protocol
...
MLP
...
Le/L1
...
4G
...
E911
...
...
User Plane Location Protocol
...
ULP
...
Lup/Ua
...
4G
...
E911
...
...
LCS Application Protocol
...
LCSAP
...
SLs
...
4G
...
VOLTE
...
Volte to Volte
...
Attach request, PDN connectivity request
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte to PSTN (with geolocation)
...
Attach request, PDN connectivity request
...
S1AP
...
S1-MME
...
4G
...
VOLTE
...
Volte to PSTN (with geolocation)
...
Extended service request
...
S1AP
...
5G - SMS: SMS over NAS-5GS
SMS over NAS-5GS allows 5G SA users to send SMS messages through the 5G core network. The AMF sends and receives SMS messages from the UE over the N1 interface, which carries NAS-5GS messages. The 5G core entities, AMF and SMSF, provision services for each other to enable the transfer of SMS over NAS-5GS.
The SMS over NAS-5GS Model captures:
UE: N1
AMF: N2, HTTP2 SBA services
SMSF: HTTP2 SBA services
UDM: HTTP2 SBA services
4G - SMS: SMS over NAS-EPS
SMS over NAS-5PS allows 4G users to send SMS messages through the 4G core network. The MME sends and receives SMS messages from the UE over the S1 interface, which carries NAS-EPS messages. The 4G core entities, MME and MSC, provision services for each other to enable the transfer of SMS over NAS-EPS.
The SMS over NAS-EPS Model captures:
MME: S1_MME, S11, SGs
S-GW: S1u, S5c, S5u
P-GW: S5c, S5u, Gm, Gy, Gx
OCS: Gy, Sy, Ro
HSS: S6a, Cx, Sh
4G - E911
E911 is a service that enables emergency operators to provide assistance to users calling 911. E911 calls are directed to emergency responders such as police, fire, and rescue departments, collectively known as Public Safety Answering Points (PSAPs). The call setup process is similar to VoLTE but includes additional components like the Emergency S-CSCF, which routes the calls to specific servers that use geo-location to assist emergency response.
The E911 Model captures:
MME: S1_MME, S11, SLs
S-GW: S1u, S5c, S5u
P-GW: S5c, S5u, Gm, Gy, Gx
OCS: Gy, Sy, Ro
HSS: S6a, Cx, Sh
S-CSCF: Mw, Mx, Mr, Mg, Mi, ISC, Cx
TAS: Mr
IBCF: Ici
MGCF: ISUP