Content for TS 43.064 Word version: 18.0.0

3.1 Abbreviations 3.2 Symbols 3.2a Restrictions 3.2b Definitions
...

1 Scope p. 8

The present document provides the overall description for lower-layer functions of the General Packet Radio Service (GPRS and EGPRS)) radio interface (Um). ). Within this TS the term GPRS refers to GPRS and EGPRS unless explicitly stated otherwise.

The overall description provides the following information:

The services offered to higher-layer functions,
The distribution of required functions into functional groups,
A definition of the capabilities of each functional group,
Service primitives for each functional group, including a description of what services and information flows are to be provided, and
A model of operation for information flows within and between the functions.

The present document is applicable to the following GPRS Um functional layers:

Radio Link Control functions,
Medium Access Control functions, and
Physical Link Control functions.

The present document describes the information transfer and control functions to be used across the radio (Um) interface for communication between the MS and the Network, see Figure 1.

3GPP TS 23.060 describes the overall GPRS logical architecture and the GPRS functional layers above the Radio Link Control and Medium Access Control layer.

3GPP TS 24.007 contains a description in general terms of the structured functions and procedures of this protocol and the relationship of this protocol with other layers and entities.

3GPP TS 44.018 contains the definition of GPRS RLC/MAC procedures when operating on the Common Control Channel (CCCH).

3GPP TS 44.060 contains the definition of RLC/MAC functions when operating on a Packet Data Channel (PDCH).

3GPP TS 44.064 contains functional procedures for the Logical Link Control (LLC) layer above the RLC/MAC.

3GPP TS 45 series defines the Physical Link layer and Physical RF layer.

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Figure 1: Scope of GPRS Logical Radio Interface Architecture

2 References p. 8

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 22.060: "General Packet Radio Service (GPRS); Stage 2".

[3]

TS 23.060: "General Packet Radio Service (GPRS); Service description; Stage 2".

[4]

TS 44.004: "Digital cellular telecommunications system; Layer 1; General requirements".

[5]

TS 24.007: "Mobile radio interface signalling layer 3 General aspects"

[6]

TS 44.018: "Mobile radio interface layer 3 specification; Radio Resource Control Protocol"

[7]

TS 44.060: "Radio Link Control/Medium Access Control (RLC/MAC) protocol".

[8]

TS 44.064: "General Packet Radio Service (GPRS); Logical Link Control (LLC)".

[9]

TS 44.065: "General Packet Radio Service (GPRS); Subnetwork Dependent Convergence Protocol (SNDCP)".

[10]

TS 45.001: "Physical layer on the radio path, General description".

[11]

TS 45.002: "Multiplexing and multiple access on the radio path".

[12]

TS 45.003: "Channel coding".

[13]

TS 45.004: "Modulation".

[14]

TS 45.005: "Radio transmission and reception".

[15]

TS 45.008: "Radio subsystem link control".

[16]

TS 45.010: "Radio subsystem synchronisation".

[17]

TS 43.246: "Multimedia Broadcast Multicast Service (MBMS) in the GERAN; Stage 2".

[18]

TS 23.682: "Architecture enhancements to facilitate communications with packet data networks and applications".

[19]

TS 24.008: "Mobile radio interface Layer 3 specification; Core network protocols; Stage 3".

[20]

TS 43.020: "Security related network functions".

[21]

TS 48.018: "BSS GPRS Protocol (BSSGP)".

3 Abbreviations, symbols and definitions p. 9

3.1 Abbreviations p. 9

In addition to abbreviations in TR 21.905 and TS 22.060 the following abbreviations apply:

ARQ

Automatic Repeat reQuest

BCS

Block Check Sequence

BEC

Backward Error Correction

Block Header

BTTI

Basic Transmission Time Interval

Coverage Class

CCN

Cell Change Notification

CFCCH

Compact Frequency Correction Channel

CPAGCH

Compact Packet Access Grant Channel

CPBCCH

Compact Packet Broadcast Control Channel

CPCCCH

Compact Packet Common Control Channel

CPPCH

Compact Packet Paging Channel

CPRACH

Compact Packet Random Access Channel

CSCH

Compact Synchronization Channel

CS-i

GPRS Coding Scheme i

Cell Update

DAS-i

EGPRS2 Downlink level A modulation and coding Scheme i

DBS-i

EGPRS2 Downlink level B modulation and coding Scheme i

DLMC

Downlink Multi Carrier

DTM

Dual Transfer Mode

eDRX

Extended Discontinuous Reception

Extended Coverage

EGPRS

Enhanced GPRS

EGPRS2

Enhanced GPRS phase 2

EC-GSM-IoT

Extended Coverage GSM for Internet of Things

EC SI

EC-GSM-IoT System Information

ESAB

Extended Synchronization Access Burst

EDAB

Extended Dual slot Access Burst

eTFI

Extended Temporary Flow Identity

FANR

Fast Ack/Nack Reporting

FBI

Final Block Indicator

Frame Header

GGSN

Gateway GPRS Support Node

HCS

Header Check Sequence

HSR

Higher Symbol Rate

Incremental Redundancy

LLC

Logical Link Control

MAC

Medium Access Control

MBMS

Multimedia Broadcast/Multicast Service

MCS-i

EGPRS Modulation and Coding Scheme i

MPRACH

MBMS Packet Random Access Channel

NSS

Network and Switching Subsystem

PACCH

Packet Associate Control Channel

PAGCH

Packet Access Grant Channel

PAN

Piggy-backed Ack/Nack

PBCCH

Packet Broadcast Control Channel

Power Control

PCCCH

Packet Common Control Channel

PCS

PAN Check Sequence

PDCH

Packet Data Channel

PDTCH

Packet Data Traffic Channel

PDU

Protocol Data Unit

PEO

Power Efficient Operation

PFC

Packet Flow Context

PFI

Packet Flow Indentifier

Physical Link

PPCH

Packet Paging Channel

PRACH

Packet Random Access Channel

PSI

Packet System Information

PSM

Power Saving Mode

PTCCH

Packet Timing Advance Control Channel

p-t-m

point-to-multipoint

RLC

Radio Link Control

RTTI

Reduced Transmission Time Interval

SGSN

Serving GPRS Support Node

SNDC

Subnetwork Dependent Convergence

Timing Advance

TBF

Temporary Block Flow

TFI

Temporary Flow Identity

TTI

Transmission Time Interval

UAS-i

EGPRS2 Uplink level A modulation and coding Scheme i

UBS-i

EGPRS2 Uplink level B modulation and coding Scheme i

USF

Uplink State Flag

3.2 Symbols p. 11

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

Interface between an SGSN and a BSC.

Interface between MS and GPRS fixed network part. The Um interface is the GPRS network interface for providing packet data services over the radio to the MS.

3.2a Restrictions |R9| p. 11

Independently of what is stated elsewhere in this and other 3GPP specifications, mobile station support for PBCCH and PCCCH is optional for A/Gb-mode of operation. The network shall never enable PBCCH and PCCCH.

3.2b Definitions |R13| p. 11

Blind Physical Layer Transmissions:

Repetitions performed on physical layer by blindly, without feedback from the receiving end, transmitting multiple instances of the same block. To maximize the processing gain at the receiver, phase coherency at the transmitter between blind transmissions transmitted within the same TDMA frame is required, see TS 45.005.

Coverage Class:

A predetermined number of blind physical layer transmissions used by Extended Coverage logical channels, EC-channels, to be able to support a certain level of extended coverage. The number of blind physical layer transmissions may differ between logical channels for the same coverage class. A Coverage Class defines a maximum coverage limit supported in EC operation, see TS 45.005. Four Coverage Classes are defined.

EC operation:

An EC-GSM-IoT capable MS in a cell supporting EC-GSM-IoT may enable EC operation, in which case CS domain services are disabled. When EC operation is enabled the MS uses FCCH and EC-SCH for synchronization purposes, EC-BCCH for acquisition of EC System Information (EC SI), EC CCCH for monitoring EC-PCH in idle mode, EC-CCCH for packet access procedures, or, if indicated by the network CCCH, and enables relaxed mobility related requirements. In packet transfer mode the MS is assigned EC-PDTCH(s) and an associated EC-PACCH in EC TBF operation mode.

Extended coverage:

Coverage level exceeding the reference sensitivity and reference interference performance of GPRS/EGPRS, see TS 45.005.

Fixed Uplink Allocation:

Static allocation of resources in the uplink over one or more TTIs, using one or more PDCH, that does not make use of USF based allocation (see TS 44.018 and TS 44.060).

Power Efficient Operation:

A PEO capable MS that has successfully negotiated the use of eDRX or PSM (see TS 23.060) may enable PEO in a cell that supports PEO in which case it enables the use of relaxed mobility related requirements (see TS 45.008) and the use of the 'PEO One Phase Access Request'. A cell that supports PEO supports the use of relaxed mobility related requirements and EGPRS PACKET CHANNEL REQUEST messages indicating 'PEO One Phase Access Request'.

Relaxed mobility related requirements:

A relaxed set of MS requirements related to mobility, used when Power Efficient Operation (PEO) or EC operation is enabled. The requirements are relaxed compared to the ones applicable for a MS that has not enabled PEO or EC operation, and include e.g. reduced monitoring of neighbour cells, reduced monitoring of System Information and less frequent triggering of measurements for cell reselection.