Content for TR 23.799 Word version: 14.0.0
1 Scope p. 18
The objective is to design a system architecture for the next generation mobile networks. The new architecture shall support at least the new RAT(s), the Evolved E-UTRA, non-3GPP accesses and minimize access dependencies.
Proposals for the new architecture can be based on an evolution of the current architecture or based on a "clean slate" approach.
The study shall consider scenarios of migration to the new architecture.
The expected work will include:
- Investigation of high-level architectural requirements.
- Definition of the terminology to be used as common language for architecture discussions.
- Definition of the high-level system architecture as the collection of required capabilities, and high level functions with their interactions between each other.
2 References p. 18
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.
[1]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
TS 23.401: "General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access".
[3]
TS 23.203: "Policy and charging control architecture".
[4]
TR 22.861: "Feasibility Study on New Services and Markets Technology Enablers for Massive Internet of Things; Stage 1".
[5]
TR 22.862: "Feasibility Study on New Markets and Technology Enablers - Critical Communications; Stage 1".
[6]
TR 22.863: "Feasibility Study on New Services and Markets Technology Enablers - Enhanced Mobile Broadband; Stage 1".
[7]
TR 22.864: "Feasibility Study on New Services and Markets Technology Enablers - Network Operation; Stage 1".
[8]
NGMN Alliance: "Description of Network Slicing Concept", Version 1.0, January 13, 2016 (http://www.ngmn.org/publications/technical.html ).
[9]
TR 22.891: "Feasibility Study on New Services and Markets Technology Enablers; Stage 1 (Release 14)".
[10]
TR 38.913: "Study on Scenarios and Requirements for Next Generation Access Technologies".
[11]
SP-160464/RP-161266, "5G Architecture Options- Full Set". Joint RAN/SA Meeting, Busan, S. Korea, June 2016.
[12]
SP-160460/RP-161269, "Tasks", Joint RAN/SA Meeting, Busan, S. Korea, June 2016.
[13]
TR 38.801: "Study on New Radio Access Technology; Radio Access Architecture and Interfaces".
[14]
RFC 7296, "Internet Key Exchange Protocol Version 2 (IKEv2)".
[15]
RFC 5191, "Protocol for Carrying Authentication for Network Access (PANA)".
[16]
TR 33.899: "Study on the security aspects of the next generation system".
→ to date, withdrawn by 3GPP
[17]
→ to date, withdrawn by 3GPP
TS 23.402: "Architecture enhancements for non-3GPP accesses; Stage 2".
[18]
TS 23.237: "IP Multimedia Subsystem (IMS) Service Continuity; Stage 2".
[19]
TS 32.251: "Telecommunication management; Charging management; Packet Switched (PS) domain charging".
[20]
TS 32.240: "Telecommunication management; Charging management; Charging architecture and principles".
[21]
TS 36.413: "Evolved Universal Terrestrial Access Network (E-UTRAN); S1 ApplicationProtocol (S1AP)".
[22]
TS 23.335: "User Data Convergence (UDC); Technical realization and information flows; Stage 2".
[23]
TS 23.007: "Restoration procedures".
[24]
TS 23.682: "Architecture enhancements to facilitate communications with packet data networks and applications".
3 Definitions and abbreviations p. 19
3.1 Definitions p. 19
For the purposes of the present document, the terms and definitions given in TR 21.905 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905.
Access Traffic Steering:
The procedure that selects the "best" access network for a new data flow and transfers the traffic of this data flow over the selected "best" access network. The selection of the "best" access network is typically based on criteria such as the network load, the measured radio signal quality, the application associated with the data flow, etc. Access traffic steering is applicable between 3GPP and non-3GPP accesses.
Access Traffic Switching:
The procedure that moves all traffic of an ongoing data flow from one access network to another access network in a way that maintains the continuity of the data flow. Access traffic switching is applicable between 3GPP and non-3GPP accesses.
Access Traffic Splitting:
The procedure that splits the traffic of a data flow across multiple access networks. When traffic splitting is applied to a data flow, some traffic of the data flow is transferred via one access and some other traffic of the same data flow is transferred via another access. Access traffic splitting is applicable between 3GPP and non-3GPP accesses.
Evolved E-UTRA:
RAT that refers to an evolution of the E-UTRA radio interface for operation in the NextGen system.
Network Capability:
Is a network provided and 3GPP specified feature that typically is not used as a separate or standalone "end user service", but rather as a component that may be combined into a telecommunication service that is offered to an "end user".
Network Function:
In this TR, Network function is a 3GPP adopted or 3GPP defined processing function in a network, which has defined functional behaviour and 3GPP defined interfaces.
Network Slice Template (NST):
is a logical representation of the Network Function(s) and corresponding resource requirements necessary to provide the required telecommunication services and network capabilities.
Network Slice Instance (NSI):
is an instance created from a Network Slice Template (NST).
Network Slice:
is a concept describing a system behaviour which is implemented via Network Slice Instance(s).
NextGen:
Next generation used in the context of the present document.
NextGen Core Network:
A core network specified in the present document that connects to a NextGen access network.
NextGen RAN (NG RAN):
In the context of this document, it refers to a radio access network that supports one or more of the following options:
2) Standalone New Radio,
4) Standalone New Radio is the anchor with Evolved E-UTRA extensions,
5) Evolved E-UTRA,
7) Evolved E-UTRA is the anchor with New Radio extensions.
with the common characteristics that the RAN interfaces with the next generation core.
NextGen Access Network (NG AN):
It refers to a NextGen RAN or a Non-3GPP access network and interfaces with the next generation core.
NextGen System (NG System):
It refers to NextGen system including NextGen Access Network (NG AN) and NextGen Core.
NextGen UE:
A UE connecting to a NextGen system.
Non Geostationary Satellites:
(LEO and MEO) circle around the Earth with a period that varies between 1.5 hour and 10 hours. A constellation of NGSO satellite associated with handover mechanisms are necessary to ensure to service continuity.
PDU Connectivity Service:
A service that provides exchange of PDUs between a UE and a data network.
PDU Session:
Association between the UE and a data network that provides a PDU connectivity service. The type of the association includes IP type, Ethernet type and non-IP type.
PDU Session of IP Type:
Association between the UE and an IP data network.
Service Continuity:
The uninterrupted user experience of a service, including the cases where the IP address and/or anchoring point changes.
Session Continuity:
The continuity of a PDU session. For PDU session of IP type "session continuity" implies that the IP address is preserved for the lifetime of the PDU session.
Satellite:
a platform integrating a transparent repeater or a telecommunication transmitter, placed into Low-Earth Orbit (LEO) typically at an altitude between 500 km to 2000 km, Medium-Earth Orbit (MEO) typically at an altitude between 8000 to 20000 km, or Geostationary-satellite Earth Orbit (GEO) at circa 35 786 km altitude.
UE Reachability Management:
UE Reachability Management: It relates to reachability detection and tracking of UEs in idle mode state.
3.2 Abbreviations p. 21
For the purposes of the present document, the abbreviations given in TR 21.905 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905.
AF
Application Function
AS
Application Server
AS
Access Stratum
CIoT
Cellular Internet of Things
CP
Control Plane
CriC
Critical Communications
DRX
Discontinuous Reception
eMBB
Evolved Mobile Broadband
eMBMS
Evolved Multicast/Broadcast Service
FQDN
Fully Qualified Domain Name
GEO
Geostationary satellite Earth Orbit
IoT
Internet of Things
LEO
Low Earth Orbit
MBB
Mobile Broadband
MEO:
Medium Earth Orbit
mIoT
Massive IoT
MTC
Machine Type Communication
NF
Network Function
NG
NextGen
NGC
NextGen Core
NGS
NextGen System
NGSO
Non Geostationary Satellite Orbit
NG AN
NextGen Access Network
NG CN
NextGen Core Network
NG RAN
NextGen RAN
NG System
NextGen System
NG UE
NextGen User Equipment
NR
New Radio
NSA NR
Non-Standalone New Radio
NST
Network Slice Template
NSI
Network Slice Instance
PCC
Policy and Charging Control
PCRF
Policy and Charging Rules Function
PGW
Packet Gateway
QoE
Quality of Experience
SA NR
Standalone New Radio
SDN
Software Defined Network
SDS
Small Data Service
SGW
Serving Gateway
UP
User Plane
