3 Definitions, abbreviations and symbols

3GPP44.060General Packet Radio Service (GPRS)Mobile Station (MS) - Base Station System (BSS) interfaceRadio Link Control / Medium Access Control (RLC/MAC) protocolRelease 17TS

3.1 Definitions

This document uses the following definitions:

Additional PLMN: when network sharing is in use within a given cell, an Additional PLMN refers to a PLMN of which the PLMN ID is broadcast in the SYSTEM INFORMATION TYPE 22 message (see 3GPP TS 44.018)

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

Basic radio block period: the time needed to transmit a radio block on one PDCH using a basic TTI configuration i.e. four TDMA frames.

Blind Physical Layer Transmissions: See 3GPP TS 43.064

Block period: block period is the sequence of four timeslots on a PDCH used to convey one radio block

Broadcast/multicast receive mode: In broadcast/multicast receive mode, the mobile station is receiving upper layer PDUs on packet data physical channels used for point-to-multipoint transmission (see sub-clause 5.3.1); it is not allocated any additional radio resource on packet data physical channels. Broadcast/multicast receive mode is a sub-state of packet idle mode. The mobile station listens to the PBCCH and PCCCH or, if those are not provided by the network, to the BCCH and CCCH.

BTTI configuration: a configuration in which a radio block is sent using one PDCH in each of four consecutive TDMA frames. In a BTTI configuration, one radio block can be transmitted in a basic radio block period.

BTTI USF mode: a mode in which the USF is received on one PDCH of a downlink PDCH-pair during four consecutive TDMA frames.

Cell Change Notification (CCN): See sub-clause 5.5.1.1a.

Common PLMN: when network sharing is in use within a given cell, the Common PLMN refers to the PLMN of which the PLMN ID is contained in the Location Area Identification IE broadcast in the SYSTEM INFORMATION TYPE 3 and SYSTEM INFORMATION TYPE 4 messages (see 3GPP TS 44.018, 3GPP TS 23.251 and 3GPP TS 24.008).

Corresponding PDCH pair: The Corresponding PDCH pair associated with an uplink PDCH pair which forms part of an uplink TBF assignment is the downlink PDCH pair which is monitored by the mobile station for the USF for the TBF and on which PACCH/D is transmitted. The Corresponding PDCH pair associated with a downlink PDCH pair which forms part of an downlink TBF assignment is the uplink PDCH pair on which PACCH/U is transmitted.

Coverage Class: See 3GPP TS 43.064.

CSG Cells Reporting: refers to the ability of the mobile station to report measurements, CSG-ID and routing parameters of CSG cells in packet transfer mode. Routing parameters include Cell Identity and optionally the PLMN-ID and (for E-UTRAN cells only) the Tracking Area Code.

Downlink Dual Carrier: Downlink Dual Carrier is a feature allowing resources (for uplink and/or downlink TBFs and/or dedicated resources) to be assigned to a mobile station on up to two radio frequency channels within the same frequency band.

Downlink Dual Carrier configuration: A Downlink Dual Carrier configuration is one in which the mobile station has radio resources assigned over two radio frequency channels. In packet transfer mode, RLC/MAC blocks for uplink TBFs can only be transmitted on one radio frequency channel in any given radio block period, and RLC/MAC blocks for downlink TBFs can be transmitted on two radio frequency channels in any given radio block period. In dual transfer mode, uplink RLC/MAC blocks can be transmitted only on the radio frequency channel on which the dedicated resource is assigned.

Downlink Multi Carrier (DLMC): Downlink Multi Carrier is a feature allowing resources for a downlink TBF (and optionally an uplink TBF) to be assigned to a mobile station on two or more radio frequency channels in the same or different frequency bands using EGPRS or EGPRS2-A.

DLMC configuration: A DLMC configuration is one in which a mobile station in packet transfer mode has a downlink TBF where radio resources are configured on two or more radio frequency channels in the same or in different frequency bands. A mobile station in a DLMC configuration with an uplink TBF can only transmit RLC/MAC blocks for the uplink TBF on one radio frequency channel in any given radio block period whereas RLC/MAC blocks for the downlink TBF can be transmitted on one or more frequency channels in any given radio block period.

DTM handover: DTM handover is a feature used by the network to command a mobile station to move from its old (source) cell to a new (target) cell while operating in dual transfer mode and continue the operation of its ongoing circuit switched service and one or more of its ongoing packet switched services in the new cell. The mobile station is allocated one circuit switched radio resource and packet switched radio resources applicable to the new cell within a DTM HANDOVER COMMAND message.

Dual transfer mode: In dual transfer mode, the mobile station is allocated radio resources providing an RR connection (3GPP TS 44.018) and one or more Temporary Block Flows on one or more packet data physical channels. The allocation of radio resource for the RR connection and the Temporary Block Flow(s) is co-ordinated by the network in agreement with the capabilities of the mobile station in dual transfer mode.

Dynamic Timeslot Reduction: Dynamic Timeslot Reduction (DTR) is a feature used by the network to reduce the number of downlink timeslots monitored by the mobile station during inactivity periods of an EGPRS TBF. It is applicable when extended uplink TBF mode and/or delayed downlink TBF release are used.

Early TBF establishment: Procedure applicable when both the network and the mobile station support the extended uplink TBF mode, where the network keeps the uplink TBF open (by means of the extended uplink TBF mode operation) upon explicit request from the mobile station that pre-allocation is required. This allows the possibility to pre-allocate a TBF before actual data is ready for transmission.

EC-GSM-IoT: See 3GPP TS 43.064.

EC operation: See 3GPP TS 43.064.

EC TBF: a TBF operating in EC TBF mode.

EC TBF mode: refers to a TBF supporting extended coverage by operation on the EC-PDTCH and EC-PACCH channels. A TBF in EC TBF mode may consist of multiple EC-PDTCH and EC-PACCH channels if in coverage class 1 according to defined multislot capablility of the mobile station. The EC TBF uses the EGPRS Modulation and Coding Schemes with GMSK modulation (MCS-1 to MCS-4) and optionally, with 8-PSK modulation (MCS-5 to MCS-9). An uplink TBF in EC TBF mode is allocated using fixed uplink allocation.

EGPRS: Enhanced GPRS enables higher data rates through usage of 8PSK modulation in addition to GMSK. EGPRS also enables Incremental Redundancy operation.

EGPRS TBF mode: refers to a TBF utilising the EGPRS enhancements (e.g. Incremental Redundancy and possibly 8-PSK) or the EGPRS2 enhancements.

EGPRS TBF: refers to a TBF utilising the EGPRS enhancements, e.g. Incremental Redundancy and possibly 8-PSK.

EGPRS2: In the downlink direction, Enhanced GPRS Phase 2 enables higher data rates through usage of higher symbol rate, turbo codes, and QPSK, 16-QAM and 32-QAM modulations in addition to (or instead of) GMSK and 8PSK. In the uplink direction, Enhanced GPRS Phase 2 enables higher data rates through usage of higher symbol rate, and QPSK, 16-QAM and 32-QAM modulations in addition to (or instead of) GMSK and 8PSK. EGPRS2 consists of EGPRS2-A and EGPRS2-B in both directions.

EGPRS2-A: In the downlink direction, Enhanced GPRS Phase 2 Level A enables higher data rates through usage of turbo codes, and 16-QAM and 32-QAM modulations in addition to GMSK and 8-PSK. In the uplink direction, Enhanced GPRS Phase 2 Level A enables higher data rates through usage of 16-QAM modulation in addition to GMSK and 8-PSK.

EGPRS2-B: In the downlink direction, Enhanced GPRS Phase 2 Level B enables higher data rates through usage of higher symbol rate, turbo codes, and QPSK, 16-QAM and 32-QAM modulations in addition to GMSK or instead of 8PSK. In the uplink direction, Enhanced GPRS Phase 2 Level B enables higher data rates through usage of higher symbol rate, and QPSK, 16-QAM and 32-QAM modulations in addition to GMSK or instead of 8PSK.

EGPRS2 TBF: refers to a TBF utilising the EGPRS2 enhancements in the direction of data transfer, downlink or uplink. More specifically, in each direction, downlink or uplink, an EGPRS2-A TBF refers to a TBF utilising the EGPRS2-A enhancements and an EGPRS2-B TBF refers to a TBF utilising the EGPRS2-B enhancements. An EGPRS2 TBF operates in EGPRS TBF mode.

EGPRS-GMSK only TBF: refers to a TBF in EGPRS TBF mode but making only use of MCS-1 to MCS-4 modulation and coding schemes. The number of PDCHs assigned to an EGPRS-GMSK only TBF can be extended to the maximum number of timeslots compatible with the GPRS multislot class of the MS. This mode is determined by the mobile station based on the aggregate timeslot allocation assigned by the network. In the case the aggregate timeslot allocation is not within the indicated EGPRS multislot class, but is within the indicated GPRS multislot class, a mobile station supporting this mode shall consider the TBF to be in EGPRS-GMSK only mode (see sub-clause 9.1.9.2). This mode is only applicable in packet transfer mode.

Enhanced Flexible Timeslot Assignment (EFTA): Enhanced Flexible Timeslot Assignment gives the network the possibility to allocate one and the same mobile station uplink and downlink PDCH resources that overlap in time. This mobile station shall then for these overlapping instances prioritize uplink radio block transmission over attempting to read downlink radio blocks (unless performing pre-emptive retransmissions), but shall always attempt to read downlink radio blocks if it has nothing to transmit If it does not need to use all its allocated uplink PDCH resources, the mobile station shall transmit its uplink radio blocks in such a way that the number of downlink radio blocks it can read is maximized. Both network and mobile station must support extended uplink TBF mode in order for Enhanced Flexible Timeslot Assignment, EFTA, to be supported.

Enhanced Multiplexing for Single RLC Entity (EMSR): Refers to the multiplexing of upper layer data flows associated with multiple PFCs with at least two of them having unique TFIs within the context of a single RLC entity for single TBF operation. EMSR may only be used on a TBF operating in EGPRS TBF mode. EMSR is not applicable to Multiple TBF operation or when Exclusive Allocation is used.

Enhanced Multiplexing for Single TBF (EMST): refers to the multiplexing of upper layer data flows using one or more RLC entities on a single TBF where each RLC entity operates in a different RLC mode. EMST is applicable only to TBFs in EGPRS TBF mode. EMST is not applicable to Multiple TBF operation.

Extended EARFCNs: refers to extended EARFCN value range (0 …262143) with EARFCNs coded over 18 bits. MS and network support of extended EARFCNs is mandatory when network sharing is supported; support of extended EARFCNs is optional otherwise.
When network sharing is in use within a given cell, the network shall provide extended EARFCNs within the SYSTEM INFORMATION TYPE 23 message, if broadcasted in the cell; additionally when extended EARFCNs is in use within a given cell, the network may provide at least one EARFCN value > 65535 within the SYSTEM INFORMATION TYPE 2quater message.

Extended uplink TBF mode: In the extended uplink TBF mode, the uplink TBF may be maintained during temporary inactive periods, where the mobile station has no RLC information to send. The network determines the release of the uplink TBF (see sub-clause 9.3.1b).

Fast Ack/Nack Reporting (FANR): Fast Ack/Nack Reporting enables the use of a PAN field within an RLC/MAC block for EGPRS data transfer or for EGPRS2 data transfer. FANR enables the mobile station to transmit in the uplink direction a PAN field corresponding to a downlink TBF. Similarly FANR enables the network to transmit in the downlink direction a PAN field corresponding to an uplink TBF.

Fixed Uplink Allocation: Static allocation (and assignment) of limited resources in the uplink over one or more TTIs, using one or more PDCHs, that does not make use of USF based allocation.

Flexible Timeslot Assignment (FTA): Flexible Timeslot Assignment allows increased flexibility in the assignment of PDCH resources by letting some of the limitations imposed by the mobile stations multislot class (see 3GPP 45.002) to be respected on an allocation basis (i.e. per radio block period) rather than on an assignment basis (i.e. at TBF setup time).

GAN Cell: A cell under control of a GANC.

GAN Mode: MS mode of operation where the MS is connected to the Core Network via a GANC and the A and/or Gb interfaces.

GPRS multislot class / EGPRS multislot class: refers to the different mobile station capabilities to transmit and receive on different combinations of multiple PDCHs. The multislot classes are defined in 3GPP TS 45.002. Note that the mobile station may indicate different multislot classes for circuit mode services for GPRS and for EGPRS (see 3GPP TS 24.008). Different multislot class mobile stations are capable of supporting different medium access modes (see sub-clause 5.2.4).

GPRS TBF mode: refers to a TBF not utilising EGPRS or EGPRS2.

Inter-band reception: see 3GPP TS 45.005.

IR: Incremental redundancy, enables higher data rates through combining information from different transmissions of RLC data blocks when decoding. Also known as Hybrid Type II/III ARQ.

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

MAC-dedicated state: a MAC-control-entity state where a DBPSCH is assigned and no SBPSCH is assigned. This state only applies in Iu mode.

MAC-DTM state: a MAC-control-entity state where at least one DBPSCH and one SBPSCH are assigned. This state only applies in Iu mode.

MAC-idle state: a MAC-control-entity state where no basic physical subchannels are assigned. This state only applies in Iu mode.

MAC-shared state: a MAC-control-entity state where at least one SBPSCH is assigned. This state only applies in Iu mode.

MCS: Modulation and Coding Scheme.

MS assisted Dedicated Core Networks selection: MS assisted Dedicated Core Network selection is an optional feature wherein the selection of the Dedicated Core Network to which a BSS routes LLC PDUs is based on, in addition to the selected PLMN, the “DCN-ID” value provided by the MS (see 3GPP TS 23.401 [54]).

MS multislot class: refers to GPRS multislot class in case of a GPRS TBF mode or EGPRS-GMSK only TBF mode. In case of EGPRS TBF mode, MS multislot class refers to EGPRS multislot class.

Multilateration Timing Advance (MTA): See 3GPP TS 43.059.

Multiple TBF procedures: A mobile station that supports multiple TBF procedures can support one or more concurrent TBFs in either direction while in packet transfer mode (A/Gb mode). A network that supports multiple TBF procedures can support one or more concurrent TBFs in either direction for a mobile station that supports multiple TBF procedures in packet transfer mode (A/Gb mode).

Multiple TTI (MTTI) configuration: A mobile station that supports MTTI Configurations may be assigned a TBF using both RTTI resources (PDCH-pairs) and BTTI resources (PDCHs).

Network sharing: network sharing is an optional feature that allows different core network operators to connect to the same shared radio access network (see 3GPP TS 23.251). When network sharing is in use within a given cell, the network broadcasts within system information the PLMN identities of the PLMNs sharing the cell. A mobile station supporting network sharing uses this information for its PLMN (re)selection processes and indicates the selected PLMN to the BSS.

Non-contiguous intra-band reception: see 3GPP TS 45.005.

Non-extended uplink TBF mode: Where a distinction is needed, an uplink TBF, not operating in the extended uplink TBF mode, is referred as operating in the non-extended uplink TBF mode.

Non-synchronized PS handover: The basic type of PS handover which is used when the time bases of the involved cells bear no particular relationship between themselves and when the MS cannot predict the timing advance to be used in the target cell before access in this cell. The requirements that apply for the non-synchronized PS handover are given in 3GPP TS 45.010.

Packet access failure: Packet access failure refers to the access cases where the mobile station is explicitly denied access to the network, i.e. is not allowed to transmit (EGPRS) PACKET CHANNEL REQUEST or MPRACH PACKET CHANNEL REQUEST messages or receives a PACKET QUEUING NOTIFICATION message or a PACKET ACCESS REJECT message.

Packet flow context: Packet Flow Context (PFC) procedures are described in 3GPP TS 23.060. A Packet Flow Identifier (PFI) is used to identify a PFC.

Packet idle mode: In packet idle mode, the mobile station is prepared to transfer LLC PDUs on packet data physical channels (see sub-clause 5.3). The mobile station is not allocated any radio resource on a packet data physical channel; it listens to the PBCCH and PCCCH or, if those are not provided by the network, to the BCCH and the CCCH.

Packet transfer mode: In packet transfer mode, the mobile station is prepared to transfer LLC PDUs on packet data physical channels (see sub-clause 5.4). The mobile station is allocated radio resource on one or more packet data physical channels for the transfer of LLC PDUs.

Piggy-backed Ack/Nack (PAN) field: A Piggy-backed Ack/Nack field provides acknowledgement status of downlink (respectively uplink) RLC data blocks within an uplink (respectively downlink) RLC/MAC block for data transfer.

Power Efficient Operation (PEO): Used by a MS to reduce its power consumption through the use of relaxed mobility related requirements and the use of eDRX or PSM – see 3GPP TS 23.060 [3]. A PEO capable MS in a cell supporting PEO, that has negotiated the use of eDRX or PSM is said to have enabled PEO.

Pre-synchronized PS handover: A type of PS handover where the MS uses the timing advance included in the PS HANDOVER COMMAND message for immediate use in the target cell. The requirements that apply for the pre-synchronized PS handover are given in 3GPP TS 45.010.

PS handover: PS handover is a feature used by the network to command a mobile station to move from its old (source) cell to a new (target) cell while operating in packet transfer mode and continue the operation of one or more of its ongoing packet switched services in the new cell using TBF resource allocations provided within a PS HANDOVER COMMAND message. For PS handover to a GAN cell the mobile station receives the assignment of the target cell radio resources prior to receiving the PS HANDOVER COMMAND message.

Radio block: A radio block is the sequence of four normal bursts carrying one RLC/MAC protocol data units (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.). A radio block is sent either on a PDCH (BTTI configuration) or a PDCH-pair (RTTI configuration).

Random access failure: Random access failure refers to the access case when the mobile station does not get any response from the network to its (EGPRS) PACKET CHANNEL REQUEST or MPRACH PACKET CHANNEL REQUEST messages.

Random values: In a number of places in this Technical Specification, it is mentioned that some value must take a "random" value, in a given range, or more generally with some statistical distribution. For such random values refer to 3GPP TS 44.018.

Reduced Latency: refers to the use of FANR either in BTTI configuration or in RTTI configuration. Reduced Latency capability is required for the use of MTTI configurations.

Reduced radio block period: the time needed to transmit a radio block on a PDCH-pair using a reduced TTI configuration i.e. two TDMA frames.

RLC/MAC block: A RLC/MAC block is the protocol data unit exchanged between RLC/MAC entities (see clause 10 and 3GPP TS 44.004).

RLC/MAC control block: A RLC/MAC control block is the part of an RLC/MAC block carrying a control message between RLC/MAC entities (see sub-clause 10.3).

RLC data block: A RLC data block is the part of a RLC/MAC block carrying user data or signalling data received from an upper layer (see sub-clause 10.2).

RLC Non-Persistent Mode: A mode of RLC operation where retransmissions are possible but it is not required that all RLC data blocks are correctly received at the receiving RLC endpoint.

RR connection: An RR connection is a physical connection established between a mobile station and the network to support the upper layers’ exchange of information flows. An RR connection is maintained and released by the two peer entities.

RRC connection: An RRC connection is a point-to-point, bi-directional, logical connection between RRC peer entities in the mobile station and the GERAN characterised by the allocation of a G-RNTI. A mobile station has either zero or one RRC connections. RRC connections only apply in Iu mode.

RTTI configuration: a configuration in which a radio block is sent using two PDCHs (PDCH-pair) in either the first two or the last two TDMA frames of any given basic radio block period.

RTTI USF mode: a mode in which the USF is received on a downlink PDCH-pair during two consecutive TDMA frames.

Source BSS: Within the context of a PS handover the source BSS is the BSS controlling the cell in which the mobile station is camping prior to performing PS handover (i.e. it controls the old cell).

Synchronized PS handover: A type of PS handover which is possible when the time bases of the involved cells are synchronized, and for which no timing advance needs to be provided to the MS. The requirements that apply for the synchronized PS handover are given in 3GPP TS 45.010.

Target BSS: Within the context of a PS handover the target BSS is the BSS controlling the cell in which the mobile station is camping after successful completion of PS handover (i.e. it controls the new cell). If the same BSS controls both the old cell and the new cell associated with the PS handover of any given mobile station then the source BSS and the target BSS are the same.

TBF abort: The term "abort" as applied to TBF is used when the TBF is abruptly stopped without using the Release of TBF procedures defined in clause 9.

TBF release: The term "release" as applied to TBF is used when the TBF is stopped using one of the Release of TBF procedures defined in clause 9.

Temporary Block Flow (TBF): A Temporary Block Flow is, in A/Gb mode, a physical connection used by the two RR peer entities to support the unidirectional transfer of LLC PDUs on packet data physical channels (see sub-clause 5.2.1). In Iu mode, a TBF is a logical connection offered by two MAC entities to support the unidirectional transfer of RLC PDUs on basic physical subchannels.

Timer Expiry: A started timer has run the time specified.

Timer Restart: A timer that may already be running is stopped and then started again to run the time specified.

Timer Start: A timer is started to run the time specified.

Timer Stop: A started timer is stopped and its value is then undefined.

Unique Frequency Parameter Set (UFPS): see 3GPP TS 45.008

Uplink control timeslot: refers to the timeslot number of the timeslot where the PACCH/U for the MS is located in case of a BTTI configuration, or to the uplink PDCH pair where the PACCH/U for the MS is located in case of an RTTI configuration. This parameter is set to the value of the Uplink Control timeslot IE in an assignment message. Otherwise, this parameter is unassigned. In A/Gb mode, this parameter is applicable only to multiple TBF procedures.

Uplink State Flag (USF): The Uplink State Flag (USF) is used on PDCH channel(s) to allow multiplexing of uplink Radio blocks from different TBFs belonging to the same or different mobile stations (see sub-clause 5.2.3, clause 10 and 3GPP TS 45.002).

Upper-layer PDU: An upper-layer PDU is, in A/Gb mode, an LLC PDU and, in Iu mode, an RRC message, a PDCP PDU or a PDU from the NAS user plane.

3.2 Abbreviations

This document uses abbreviations from 3GPP TR 21.905 and 3GPP TS 43.064. It also uses the following abbreviations:

ARI Access Request Identifier

ARQ Automatic Repeat reQuest

AS Access Stratum

BCCH Broadcast Control CHannel

BSS Base Station Subsystem

BTTI Basic Transmission Time Interval

CBCH Cell Broadcast CHannel

CC Call Control

CC Coverage Class

CCCCH Compact CCCH

CCCH Common Control CHannel

CCN Cell Change Notification

CN Core Network

CPBCCH Compact PBCCH

CS-i GPRS Coding Scheme i

DAS-i EGPRS2 Downlink level A modulation and coding Scheme i

DBS-i EGPRS2 Downlink level B modulation and coding Scheme i

DC Dedicated Control

DCN-ID Dedicated Core Network ID

DLC Data Link Control

DLMC Downlink Multi Carrier

DBPSCH Dedicated Basic Physical Sub CHannel

DTR Dynamic Timeslot Reduction

EC-AGCH Extended Coverage Access Grant CHannel

EC-BCCH Extended Coverage BroadCast CHannel

EC-CCCH Extended Coverage Common Control CHannel

EC-PCH Extended Coverage Paging CHannel

EC-RACH Extended Coverage Random Access CHannel

EC-SCH Extended Coverage Synchronization CHannel

ECSD Enhanced Circuit Switched Data

EC SI Extended Coverage System Information

EDGE Enhanced Data rates for Global Evolution

E-FACCH Enhanced FACCH

EGPRS Enhanced General Packet Radio Service

EGPRS2 EGPRS Phase 2

eNB E-UTRAN NodeB

E-TCH Enhanced TCH

eTFI extended Temporary Flow Identifier

EUTRA Evolved UTRA

E-UTRAN Evolved UTRAN

FACCH Fast Associated Control CHannel

FANR Fast Ack/Nack Reporting

GAN Generic Access Network

GANC Generic Access Network Controller

GC General Control

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

IETF Internet Engineering Task Force

IMSI International Mobile Subscriber Identity

IP Internet Protocol

LCS LoCation Services

LLC Logical Link Control

MAC Medium Access Control

MCS-i EGPRS Modulation and Coding Scheme i

MM Mobility Management

MME Mobility Management Entity

MPRACH MBMS Packet Random Access Channel

MS Mobile Station

MTA Multilateration Timing Advance

NAS Non Access Stratum

NSAPI Network-layer SAPI

Nt Notification

O-FACCH Octal FACCH

O-TCH Octal TCH

PAN Piggy-backed Ack/Nack

PBCCH Packet BCCH

PDCH Packet Data CHannel

PDCP Packet Data Convergence Protocol

PDP Packet Data Protocol

PDTCH Packet Data TCH

PDU Protocol Data Unit

PEO Power Efficient Operation

PFC Packet Flow Context

PFI Packet Flow Identifier

PLMN Public Land Mobile Network

PTCCH Packet Timing-advance Control CHannel

p-t-m point-to-multipoint

P-TMSI Packet TMSI

QoS Quality of Service

RAB Radio Access Bearer

RANAP Radio Access Network Application Part

RB Radio Bearer

RLC Radio Link Control

RNC Radio Network Controller

RNS Radio Network Subsystem

RNSAP Radio Network Subsystem Application Part

ROHC Robust Header Compression

RR Radio Resource

RRC Radio Resource Control

RTP Real Time Protocol

RTTI Reduced Transmission Time Interval

SACCH Slow Associated Control CHannel

SAP Service Access Point

SAPI Service Access Point Identifier

SDCCH Stand-alone Dedicated Control CHannel

SDU Service Data Unit

SBPSCH Shared Basic Physical Sub CHannel

TBF Temporary Block Flow

TCH Traffic Channel

TCP Transmission Control Protocol

TFI Temporary Flow Identifier

TLLI Temporary Logical Link Identifier

TMSI Temporary Mobile Subscriber Identity

TSC Training Sequence Code

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

UDP User Datagram Protocol

UMTS Universal Mobile Telecommunication System

USF Uplink State Flag

UTRAN UMTS Terrestrial Radio Access Network

3.3 Symbols

This document uses the following symbols:

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

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

Um Interface between an MS and the GERAN