3GPP Atlas

Canonical Atlas record

TS 25.420

UTRAN Iur interface general aspects and principles

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Responsible WGR3
StatusUnder change control
Initial releaseRel-4
Selected releaseRel-6
Latest indexed version19.0.0
Series25
TypeTS

Release evolution

Compare evidence between releases

Use indexed version, Work Item and Change Request evidence to see what changed around this specification. This is an evidence trail, not a clause-by-clause normative diff.

Release ledger

Version · WI · CR evidence by release

Rel-44.2.05 WI9 CRs · 9 approved
Rel-55.3.010 WI11 CRs · 6 approved
Rel-66.4.015 WI20 CRs · 9 approved
Rel-77.3.010 WI6 CRs · 3 approved
Rel-88.1.03 WI3 CRs · 2 approved
Rel-99.1.12 WI2 CRs · 1 approved
Rel-1010.1.03 WI4 CRs · 2 approved
Rel-1111.0.00 WI0 CRs
Rel-1212.0.00 WI0 CRs
Rel-1313.0.00 WI0 CRs
Rel-1414.0.00 WI0 CRs
Rel-1515.0.00 WI0 CRs
Rel-1616.0.00 WI0 CRs
Rel-1717.0.00 WI0 CRs
Rel-1818.0.00 WI0 CRs
Rel-1919.0.00 WI0 CRs
R99no version indexed5 WI14 CRs · 14 approved
Release 19993.5.00 WI0 CRs

Rel-6 snapshot

Work affecting this release

20 indexed Change Requests · 15 connected Work Items.

Showing 12 CR records from the available cross-release sample. Browse release CR records (JSON) →

CR 0045 rev.2 — Introduction of E-DCH

CR 0046 — Introduction to Fractional DPCH

CR 0046 rev.1 — Introduction to Fractional DPCH

CR 0047 — Introduction of Fractional DPCH

CR 0048 — Correction to the initiation of release of the SCCP connection

CR 0048 rev.1 — Correction to the initiation of release of the SCCP connection

CR 0050 — Feature Cleanup: Removal of CPCH

CR 0052 — Correction of M3UA references

CR 0054 — Feature clean-up: Removal of DSCH (FDD mode)

CR 0034 rev.2 — Introduction of ITU-T Q.2631.1 for interworking solution 3

CR 0039 rev.1 — Completion of the Rel-5 IP transport WI by removing the 3rd IP-ATM interworking option

CR 0040 — Inclusion of Information Transfer as an Iur function

Version history

Indexed versions

Showing 41 of 41 indexed versions.

19.0.0Rel-19SA#1092025-10-02
18.0.0Rel-18SA#1032024-04-03
17.0.0Rel-17SA#95-e2022-04-05
16.0.0Rel-16SA#88-e2020-07-16
15.0.0Rel-15SA#802018-07-02
14.0.0Rel-14RAN#752017-03-24
13.0.0Rel-13SA#702015-12-18
12.0.0Rel-12SA#652014-09-22
11.0.0Rel-11SA#572012-09-24
10.1.0Rel-10RAN#522011-06-24
9.1.1Rel-9RAN#512011-04-04
10.0.0Rel-10SA#512011-04-04
9.1.0Rel-9RAN#492010-09-28
9.0.0Rel-9SA#462009-12-18
8.1.0Rel-8RAN#432009-03-16
8.0.0Rel-8RAN#422008-12-16
7.3.0Rel-7RAN#352007-03-23
7.2.0Rel-7RAN#342006-12-13
7.1.0Rel-7RAN#332006-10-10
7.0.0Rel-7RAN#312006-03-24
6.4.0Rel-6RAN#282005-06-17
5.3.0Rel-5RAN#282005-06-17
6.3.0Rel-6RAN#272005-03-24
6.2.0Rel-6RAN#262005-01-06
6.1.0Rel-6RAN#242004-06-18
5.2.0Rel-5RAN#242004-06-18
6.0.0Rel-6RAN#222004-01-13
5.1.0Rel-5RAN-#172002-10-03
5.0.0Rel-5RAN-#152002-04-02
4.2.0Rel-4RAN-#152002-04-02
3.5.0Release 1999RAN-#152002-04-02
4.1.0Rel-4RAN-#142002-01-11
3.4.0Release 1999RAN-#142002-01-11
4.0.0Rel-4RAN-#112001-04-06
3.3.0Release 1999RAN-#112001-04-05
3.2.0Release 1999RAN-#92000-10-05
3.1.0Release 1999RAN-#72000-03-15
3.0.0Release 1999RAN-#61999-12-12
1.0.1Release 1999RAN-#51999-10-13
0.1.3Release 1999RAN-#41999-06-23
0.1.0Release 1999RAN-#31999-04-23

Atlas classifications

Meaning and provenance

No Atlas classifications have been attached yet.

Work Items

Standards work connected to TS 25.420

ETRAN-MigrMod

Transport bearer modification procedure on Iub, Iur, and Iu

Rel-4official
ETRAN-QoSAAL2

QoS optimization for AAL2 connections over Iub and Iur interfaces

Rel-4official
Effective Acronym:

Rel-4 RAN improvements

Historical association · verification pending
Rel-4historical link
LCRTDD

Low Chip Rate TDD option

Historical association · verification pending
Rel-4historical link
LCS1-UEpos-IubIur

Iub/Iur interfaces for methods Rel 99

Historical association · verification pending
Rel-4historical link
ETRAN-IPtrans

IP transport in the UTRAN

Historical association · verification pending
Rel-5historical link
Effective Acronym:

Rel-5 RAN improvements

Historical association · verification pending
Rel-5historical link
HSDPA

High Speed Downlink Packet Access

Historical association · verification pending
Rel-5historical link
HSDPA-IubIur

Iub/Iur protocol aspects - for High Speed Downlink Packet Access

Rel-5official
LCS-128Pos

UE positioning enhancements for 1.28 Mcps TDD

Historical association · verification pending
Rel-5historical link
LCS1

Rel-5 Location Services enhancements

Historical association · verification pending
Rel-5historical link
LCS1-Uepos

UE positioning for Rel-5 Location Services enhancements

Historical association · verification pending
Rel-5historical link
RANimp-RRMopt

RRM optimization for Iur and Iub

Rel-5parsed
RANimp-SRNS

FS SRNS Relocation Procedure Enhancement

Historical association · verification pending
Rel-5historical link
TEI5

(Small) Technical Enhancements and Improvements for Rel-5

Rel-5parsed
WI 9

Rel-6 RAN improvements

Historical association · verification pending
Rel-6historical link
WI 624

RAB support enhancement

Historical association · verification pending
Rel-6historical link
WI 2

Deleted - Rel-6 Evolutions of the transport in the UTRAN (ETRAN)

Historical association · verification pending
Rel-6historical link
CH

Rel-6 Charging Management

Historical association · verification pending
Rel-6historical link
EDCH

FDD Enhanced Uplink

Historical association · verification pending
Rel-6historical link
EDCH-IurIub

FDD Enhanced Uplink - UTRAN Iub/Iur Protocol Aspects

Rel-6official
MBMS

Multimedia Broadcast and Multicast Service

Historical association · verification pending
Rel-6historical link
MBMS-RAN

Introduction of MBMS in RAN

Rel-6official
OAM-Trace

Rel-6 Trace Management

Historical association · verification pending
Rel-6historical link
OAM-Trace-RAN

Subscriber and equipment trace in UTRAN

Rel-6official
OAM6

Rel-6 Operations, Administration, Maintenance and Provisioning (OAM&P)

Historical association · verification pending
Rel-6historical link
RANimp-NACC

Network Assisted Cell Change (NACC) from UTRAN to GERAN - network-side aspects

Rel-6official
RANimp-RABSE-CodeOptFDD

Optimization of downlink channelisation code utilisation

Rel-6official
RANimp-RRMopt-UEMsD

Rel-6 RRM optimization for Iur and Iub

Historical association · verification pending
Rel-6historical link
TEI6

(Small) Technical Enhancements and Improvements for Rel-6

Rel-6parsed
WI 20029

Rel-7 RAN improvements

Historical association · verification pending
Rel-7historical link
EDCHTDD

3.84 Mcps TDD Enhanced Uplink

Historical association · verification pending
Rel-7historical link
EDCHTDD-IurIub

EDCHTDD: UTRAN Iub/Iur Protocol Aspects

Rel-7official
LCRTDD-EDCH

1.28 Mcps TDD Enhanced Uplink

Historical association · verification pending
Rel-7historical link
LCRTDD-EDCH-IubIur

1.28 Mcps TDD Enhanced Uplink: UTRAN Iub/Iur Protocol Aspects

Rel-7official
Mp

Mp (MRFC - MRFP) interface

Historical association · verification pending
Rel-7historical link
RANimp-VHCRTDD-EDCH

7.68 Mcps TDD Enhanced Uplink

Rel-7official
TEI7

(Small) Technical Enhancements and Improvements for Rel-7

Rel-7parsed
VHCRTDD

7.68 Mcps TDD option

Historical association · verification pending
Rel-7historical link
VHCRTDD-IurIub

VHCRTDD: UTRAN Iub/Iur Protocol Aspects

Historical association · verification pending
Rel-7historical link
Effective Acronym:

Rel-8 RAN improvements

Historical association · verification pending
Rel-8historical link
RANimp-HSPAEvo

Enhancements for FDD HSPA Evolution

Rel-8official
RANimp-SrnsReloc

Enhancements for Serving Radio Network Subsystem (SRNS) Relocation Procedure

Rel-8official
Effective Acronym:

Rel-9 RAN improvements

Historical association · verification pending
Rel-9historical link
TEI9

(Small) Technical Enhancements and Improvements for Rel-9

Rel-9parsed
TEI10

(Small) Technical Enhancements and Improvements for Rel-10

Rel-10parsed
eIurg

Enhancements of Iur-g interface

Historical association · verification pending
Rel-10historical link
eIurg-RAN

Core part: Enhancements of Iur-g interface (Stage 2/3)

Rel-10official
HS

Harmonized Standard

Historical association · verification pending
R99historical link
LCS

Location Services

Historical association · verification pending
R99historical link
OSA

Open Service Access

Historical association · verification pending
R99historical link
QoS

End-to-end UMTS Quality of Service management

Historical association · verification pending
R99historical link
TEI

(Small) Technical Enhancements and Improvements for R99

R99parsed

Knowledge graph

Related standards

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