3 Definitions, symbols and abbreviations

25.4023GPPRelease 17Synchronisation in UTRAN Stage 2TS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

3.1 Definitions

Network Synchronisation: generic concept that depicts the way of distributing a common frequency to all elements in a network

Reference Timing Signal: as defined in reference ITU-T Rec. G.810 [28].

Holdover mode: operating condition of a clock which has lost its controlling reference input and is using stored data, acquired while in locked operation (that is while controlled by an external input reference), to control its output. The stored data are used to control phase and frequency variations, allowing the locked condition to be reproduced within specifications.

3.2 Symbols

No special symbols are defined in this document.

3.3 Abbreviations

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

ACK (time alignment) acknowledgement

BFN Node B Frame Number (counter)

CFN Connection Frame Number (counter)

CH Channel

CN Core Network

CPICH Common Pilot Channel

CRNC Controlling RNC

DL Down Link

DCH Dedicated Channel

DOFF_FDD FDD Default DPCH Offset value

DOFF_TDD TDD Default DPCH Offset value

DPCH Dedicated Physical Channel

DPCCH Dedicated Physical Control Channel

DRNC Drift RNC

DSCH Downlink Shared Channel

FACH Forward Access Channel

FDD Frequency Division Duplex

F-DPCH Fractional DPCH

GPS Global Positioning System

HO Handover

IMB Integrated Mobile Broadcast

LTOA Latest Time of Arrival

L1 Layer 1

L2 Layer 2

MAC Medium Access Control

MBMS Multimedia Broadcast Multicast Service

MBSFN Multicast/Broadcast over a Single Frequency Network

MCCH MBMS point-to-multipoint Control Channel

MFN Multicast Frame Number (counter)

MTCH MBMS point-to-multipoint Traffic Channel

NACK (time alignment) negative acknowledgement

PCCPCH Primary Common Control Physical Channel

PCH Paging Channel

PDU Packet Data Unit

PTP Point-to-Point

PTM Point-to-Multipoint

PUSCH Physical Uplink Shared Channel

RAB Radio Access Bearer

RACH Random Access Channel

RAN Radio Access Network

RFN RNC Frame Number (counter)

RL Radio Link

RNC Radio Network Controller

RNS Radio Network Subsystem

RRC Radio Resource Control

SAP Service Access Point

SCH Synchronisation Channel

SFN Cell System Frame Number (counter)

SRNC Serving RNC

SRNS Serving RNS

TBS Transport Block Set

TDD Time Division Duplex

TOA Time Of Arrival

TOAWE Time Of Arrival Window Endpoint

TOAWS Time Of Arrival Window Startpoint

TTI Time Transmission Interval

UE User Equipment

UL Up Link

UMTS Universal Mobile Telecommunications System

USCH Uplink Shared CHannel

UTRAN UMTS Terrestrial Radio Access Network

3.4 Specification Notations

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

[FDD] This tagging of a word indicates that the word preceding the tag "[FDD]" applies only to FDD. This tagging of a heading indicates that the heading preceding the tag "[FDD]" and the section following the heading applies only to FDD.

[TDD] This tagging of a word indicates that the word preceding the tag "[TDD]" applies only to TDD, including 3.84Mcps TDD, 7.68Mcps TDD and 1.28Mcps TDD. This tagging of a heading indicates that the heading preceding the tag "[TDD]" and the section following the heading applies only to TDD, including 3.84Mcps TDD, 7.68Mcps TDD and 1.28Mcps TDD.

[3.84Mcps TDD] This tagging of a word indicates that the word preceding the tag "[3.84Mcps TDD]" applies only to 3.84Mcps TDD. This tagging of a heading indicates that the heading preceding the tag "[3.84Mcps TDD]" and the section following the heading applies only to 3.84Mcps TDD.

[1.28Mcps TDD] This tagging of a word indicates that the word preceding the tag "[1.28Mcps TDD]" applies only to 1.28Mcps TDD. This tagging of a heading indicates that the heading preceding the tag "[1.28Mcps TDD]" and the section following the heading applies only to 1.28Mcps TDD.

[7.68Mcps TDD] This tagging of a word indicates that the word preceding the tag "[7.68Mcps TDD]" applies only to 7.68Mcps TDD. This tagging of a heading indicates that the heading preceding the tag "[7.68Mcps TDD]" and the section following the heading applies only to 7.68Mcps TDD.

[FDD – …] This tagging indicates that the enclosed text following the "[FDD – " applies only to FDD. Multiple sequential paragraphs applying only to FDD are enclosed separately to enable insertion of TDD specific (or common) paragraphs between the FDD specific paragraphs.

[TDD – …] This tagging indicates that the enclosed text following the "[TDD – " applies only to TDD including 3.84Mcps TDD, 7.68Mcps TDD and 1.28Mcps TDD. Multiple sequential paragraphs applying only to TDD are enclosed separately to enable insertion of FDD specific (or common) paragraphs between the TDD specific paragraphs.

[3.84Mcps TDD – …] This tagging indicates that the enclosed text following the "[3.84Mcps TDD – " applies only to 3.84Mcps TDD. Multiple sequential paragraphs applying only to 3.84Mcps TDD are enclosed separately to enable insertion of FDD and TDD specific (or common) paragraphs between the 3.84Mcps TDD specific paragraphs.

[1.28Mcps TDD – …] This tagging indicates that the enclosed text following the "[1.28Mcps TDD – " applies only to 1.28Mcps TDD. Multiple sequential paragraphs applying only to 1.28Mcps TDD are enclosed separately to enable insertion of FDD and TDD specific (or common) paragraphs between the 1.28Mcps TDD specific paragraphs.

[7.68Mcps TDD – …] This tagging indicates that the enclosed text following the "[7.68Mcps TDD – " applies only to 7.68Mcps TDD. Multiple sequential paragraphs applying only to 7.68Mcps TDD are enclosed separately to enable insertion of FDD and TDD specific (or common) paragraphs between the 7.68Mcps TDD specific paragraphs.

Procedure When referring to an elementary procedure in the specification, the Procedure Name is written with the first letters in each word in upper case characters followed by the word "procedure", e.g. Radio Link Setup procedure.

Message When referring to a message in the specification, the MESSAGE NAME is written with all letters in upper case characters followed by the word "message", e.g. RADIO LINK SETUP REQUEST message.

IE When referring to an information element (IE) in the specification, the Information Element Name is written with the first letters in each word in upper case characters and all letters in Italic font followed by the abbreviation "IE", e.g. Transport Format Set IE.

Value of an IE When referring to the value of an information element (IE) in the specification, the "Value" is enclosed by quotation marks, e.g. "Abstract Syntax Error (Reject)".

Frame When referring to a control or data frame in the specification, the CONTROL/DATA FRAME NAME is written with all letters in upper case characters followed by the words "control/data frame", e.g. FACH FLOW CONTROL control frame.