3 Definitions, symbols and abbreviations

3GPP43.130GSM/EDGE Iur-g interfaceRelease 16Stage 2TS

3.1 Definitions

For the purposes of the present document, the terms and definitions given in 3GPP TR 21.905 [1] and the following ones apply:

A/Gb mode: mode of operation of the MS when connected to the Core Network via GERAN and the A and/or Gb interfaces.

MS: Unless stated otherwise, this refers with no distinction to both MS and UE.

Iu mode: mode of operation of the MS when connected to the Core Network via GERAN or UTRAN and the Iu interface.

RAN node: a BSS or a RNC.

3.2 Symbols

For the purposes of the present document, the following symbols apply:

A Interface between a BSS and an MSC

Gb Interface between a BSS and an SGSN

Iu Interface between a BSS/RNC and the CN

Iur Interface between two RNSs

Iur-g Interface between two BSSs or between a BSS and an RNS

Um Interface between a GERAN MS and a BSS

Uu Interface between a UE and the RNS

3.3 Abbreviations

For the purposes of the present document, the following abbreviations apply:

BSC Base Station Controller

BSS Base Station Sub-system

CBSS Controlling Base Station Sub-system

CN Core Network

CRNC Controlling Radio Network Controller

GERAN Gsm/Edge Radio Access Network

GPRS General Packet Radio Service

GRA Geran Registration Area

LA Location Area

MS Mobile Station

MSC Mobile Switching Centre

NACC Network Assisted Cell Change

NNSF NAS Node Selection Function

RA Routeing Area

RAN Radio Access Network

RNC Radio Network Controller

RNS Radio Network Sub-system

RNSAP Radio Network Subsystem Application Part

RNTI Radio Network Temporary Identity

RRA Ran Registration Area

RRM Radio Resource Management

SBSC Serving Bsc

SBSS Serving Bss

SGSN Serving Gprs Support Node

SRNC Serving Rnc

TBSS Target BSS

UE User Equipment

UMTS Universal Mobile Telephony System

URA Utran Registration Area

UTRAN Umts Terrestrial Radio Access Network