3 Definitions, symbols and abbreviations

3GPP44.160General Packet Radio Service (GPRS)Mobile Station (MS) - Base Station System (BSS) interfaceRadio Link Control / Medium Access Control (RLC/MAC) protocol Iu modeRelease 16TS

3.1 Definitions

For the purposes of the present document, the terms and definitions given in 3GPP TS 44.060 and the following apply:

Active transport channel: a transport channel is active during a TTI if it carries an RLC/MAC block. This definition applies to FLO only.

Block period: sequence of timeslots on a SBPSCH or a DBPSCH used to convey one radio block.
There are 4 timeslots in this sequence for PDTCH, PACCH, SACCH, SDCCH, TCH/AHS, E-FACCH. There are 6 timeslots in this sequence for FACCH/H. There are 8 timeslots in this sequence for TCH/AFS and FACCH/F. There are 22 timeslots in this sequence for (E-)TCH/F.

CDCH TBF Mode: refers to a TBF belonging to a signalling radio bearer and using FLO.

DCCH TBF mode: refers to a TBF mapped onto a FACCH, SACCH or SDCCH.

Radio block: sequence of normal bursts carrying one RLC/MAC protocol data unit (see 3GPP TS 44.004).
(The one exception is a radio block occasionally used on PACCH consisting of a sequence of four access bursts, each carrying a repetition of one short RLC/MAC block.). There are 4 normal bursts in this sequence for PDTCH, PACCH, SACCH, SDCCH, TCH/AHS, E-FACCH. There are 6 normal bursts in this sequence for FACCH/H. There are 8 normal bursts in this sequence for TCH/AFS and FACCH/F. There are 22 normal bursts in this sequence for (E‑)TCH/F.

RLC non-transparent mode: refers to either RLC acknowledged mode or RLC unacknowledged mode.

TCH TBF mode: refers to a TBF mapped onto a TCH.

Transport format: configuration of a transport channel, including for instance block size and CRC. This definition applies to FLO only.

Transport format combination: allowed combination of transport format(s) of the different transport channels that are multiplexed together on a basic physical subchannel

Signalling TFC: transport format combination that shall be used for signalling (ADCH, CDCH). It may also be used for user-plane data (UDCH). On each DBPSCH, the signalling TFC is the lowest TFC in the TFCS of this DBPSCH (see 3GPP TS 44.118).

Transport format combination set: set of allowed transport format combinations on a basic physical subchannel

Transport format set: set of all transport formats defined for a particular transport channel.

Transmission time interval: rate at which RLC/MAC blocks are exchanged between the physical layer and the MAC sublayer on a transport channel: 20ms. This definition applies to FLO only.

UDCH TBF mode: refers to a TBF belonging to a user-plane radio bearer and using FLO.

NOTE: Iu mode specific definitions that are not used in 3GPP TS 44.060 should be added here.

3.2 Symbols

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

A Interface between a BSS and a 2G MSC

Gb Interface between a BSS and a 2G SGSN

Iu Interface between a BSS or an RNC and a 3G MSC or a 3G SGSN

Iu-cs Interface between a BSS or an RNC and a 3G MSC

Iu-ps Interface between a BSS or an RNC and a 3G SGSN

Um Interface between an MS and the GERAN

3.3 Abbreviations

For the purposes of the present document, the abbreviations given in 3GPP TR 21.905 and 3GPP TS 43.064, and the following apply:

ADCH Associated DCH

ARQ Automatic Repeat reQuest

BCCH Broadcast Control CHannel

BSS Base Station Subsystem

CBCH Cell Broadcast CHannel

CCN Cell Change Notification

CDCH Control-plane DCH

CN Core Network

CS-i GPRS Coding Scheme i

DBPSCH Dedicated Basic Physical Sub CHannel

DCH Dedicated CHannel

ECSD Enhanced Circuit Switched Data

EDGE Enhanced Data rates for Global Evolution

EGPRS Enhanced General Packet Radio Service

FACCH Fast Associated Control CHannel

FLO Flexible Layer One

GERAN Gsm/Edge Radio Access Network

GPRS General Packet Radio Service

GRA Geran Registration Area

G-RNTI Geran Radio Network Temporary Identity

GSM Global System for Mobile communications

HFN Hyper Frame Number

IMSI International Mobile Subscriber Identity

LCS LoCation Services

MAC Medium Access Control

MCS-i EGPRS Modulation and Coding Scheme i

MS Mobile Station

MSC Mobile Switching Centre

NAS Non Access Stratum

NSAPI Network-layer SAPI

NT-RLC RLC non-transparent mode

PBCCH Packet BCCH

PDCH Packet Data CHannel

PDCP Packet Data Convergence Protocol

PDP Packet Data Protocol

PDTCH Packet Data TCH

PDU Protocol Data Unit

PLMN Public Land Mobile Network

PTCCH Packet Timing-advance Control CHannel

P-TMSI Packet TMSI

QoS Quality of Service

RB Radio Bearer

RBid Radio bearer identity

RLC Radio Link Control

RNC Radio Network Controller

RR Radio Resource

RRBid Reduced RBid

RRC Radio Resource Control

SACCH Slow Associated Control CHannel

SAP Service Access Point

SAPI Service Access Point Identifier

SBPSCH Shared Basic Physical Sub CHannel

SDCCH Stand-alone Dedicated Control CHannel

SDU Service Data Unit

SGSN Serving GPRS Support Node

SRB Signalling Radio Bearer

TBF Temporary Block Flow

TCH Traffic Channel

TF Transport Format

TFC Transport Format Combination

TFCS Transport Format Combination Set

TFS Transport Format Set

TMSI Temporary Mobile Subscriber Identity

TrCH Transport CHannel

T-RLC RLC transparent mode

TTI Transport Time Interval

UDCH User-plane DCH

UMTS Universal Mobile Telecommunication System

URB User Radio Bearer

USF Uplink State Flag

UTRAN UMTS Terrestrial Radio Access Network