3 Definitions, Symbols and Abbreviations

23.4023GPPArchitecture enhancements for non-3GPP accessesRelease 18TS

3.1 Definitions

For the purposes of the present document, the terms and definitions given in TR 21.905 [1] 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 [1].

SectorID or Sector Address Identifier: This identifier is defined in 3GPP2 C.S0024-A v2.0 [32] and is used to identify an HRPD AN. The Network operator shall set the value of the SectorID according to the rules specified in clause 14.9 of 3GPP2 C.S0024-A v2.0 [32].

IFOM capable UE: A UE that is capable of routing different IP flows to the same PDN connection through different access networks (see TS 23.261 [55]).

Inter-APN routing capable UE: A UE that is capable of routing IP flows across multiple simultaneously active IP interfaces, each one associated with a specific APN. These interfaces may be linked to different access networks or to the same access network.

NG-RAN: A radio access network that connects to 5GC, as defined in TS 23.501 [87].

Non-seamless WLAN offload capable UE: A UE that is capable of non-seamless WLAN offload as defined in clause 4.1.5.

MAPCON capable UE: A UE that is capable of routing different simultaneously active PDN connections through different access networks.

Transparent Single-Connection mode: A communication mode between a UE and a trusted WLAN (TWAN) where the TWAN may set up non-seamless WLAN offload or an S2a tunnel without explicit request from the UE.

Single-Connection mode: A communication mode that is capable to support only a single connection at a time between a UE and a trusted WLAN (TWAN) . This connection can be used either for Non-Seamless WLAN Offload (as defined in clause 4.1.5) or for PDN connectivity. The use of the Single-Connection mode and the associated parameters of the connection (e.g. for NSWO, for PDN connectivity, APN, etc.) can be negotiated during authentication over TWAN.

Multi-Connection mode: A communication mode that is capable to support a single or multiple connections at a time between a UE and a trusted WLAN. One connection can be used for Non-Seamless WLAN Offload (as defined in clause 4.1.5) and one or more simultaneous connections can be used for PDN connectivity. The use of the Multi-Connection mode can be negotiated during authentication over TWAN and the requested PDN connection can be setup with the WLCP protocol for PDN connectivity.

3.2 Abbreviations

For the purposes of the present document, the abbreviations given in TR 21.905 [1] and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905 [1].

5GC 5G Core Network

ANDSF Access Network Discovery and Selection Function

DSMIPv6 Dual-Stack MIPv6

CPICH Common Pilot Channel

DMNP Delegated Mobile Network Prefix

EAP Extensible Authentication Protocol

EPC Evolved Packet Core

ePDG Evolved Packet Data Gateway

EPS Evolved Packet System

FACoA Foreign Agent Care-of-Address

FQDN Fully Qualified Domain Name

GW Gateway

H‑ANDSF Home-ANDSF

HBM Host-based Mobility

HRPD High Rate Packet Data

HS‑GW HRPD Serving Gateway

IFOM IP Flow Mobility

IKEv2 Internet Key Exchange version 2

IPMS IP Mobility management Selection

LMA Local Mobility Anchor

LWA LTE-WLAN Radio Level Aggregation

LWIP LTE-WLAN Radio Level Integration with IPsec Tunnel

MAG Mobile Access Gateway

MAPCON Multi Access PDN Connectivity

MIPv4 Mobile IP version 4

MIPv6 Mobile IP version 6

MME Mobility Management Entity

MTC Machine-Type Communications

NBM Network-based Mobility

NSWO Non-seamless WLAN Offload

OPI Offload Preference Indicator

P‑GW PDN Gateway

PMIP/PMIPv6 Proxy Mobile IP version 6

RIM RAN Information Management

RCLWI RAN Controlled WLAN Interworking

RSRP Reference Signal Received Power

RSSI Received Signal Strength Indicator

SectorID Sector Address Identifier

S‑GW Serving GW

SON Self-Configuring and self-Optimizing network

TWAP Trusted WLAN AAA Proxy

TWAG Trusted WLAN Access Gateway

TWAN Trusted WLAN Access Network

UICC Universal Integrated Circuit Card

UWAN Untrusted WLAN Access Network

V‑ANDSF Visited-ANDSF

WiMAX Worldwide Interoperability for Microwave Access

WLCP WLAN Control Protocol

WMM Wifi Multimedia