TR Latest: Rel-19 Radio Access 3G

TR 44.901 – Extended NACC for External Cell Change

3GPP TR 44.901 is the 3GPP Technical Report for Extended NACC for External Cell Change. It is published in 12 releases (Rel-8 to Rel-19); the latest version is 19.0.0 in Rel-19.

Extends Network Assisted Cell Change (NACC) to support cell changes between different BSCs/RNCs to reduce service outage time during packet transfer.

Read TR 44.901 →

Document type

Technical Report

Latest release

Rel-19

Latest version

19.0.0

Series

44 series

Releases and versions of TR 44.901

Release	Latest version	Links
Rel-19	19.0.0	Read · Download (3GPP)
Rel-18	18.0.0	Read · Download (3GPP)
Rel-17	17.0.0	Read · Download (3GPP)
Rel-16	16.0.0	Read · Download (3GPP)
Rel-15	15.0.0	Read · Download (3GPP)
Rel-14	14.0.0	Read · Download (3GPP)
Rel-13	13.0.0	Read · Download (3GPP)
Rel-12	12.0.0	Read · Download (3GPP)
Rel-11	11.0.0	Read · Download (3GPP)
Rel-10	10.0.0	Read · Download (3GPP)
Rel-9	9.0.0	Read · Download (3GPP)
Rel-8	8.0.0	Read · Download (3GPP)

Scope of TR 44.901

Category: Radio Access (Mobility Management). Technology generation: 3G. Network layer: RAN.

Who should read this specification?

Network operators
Device manufacturers
Researchers and academics

Implementation notes

Complexity level: Intermediate. Implementation difficulty: Medium.

Key technologies

GERANGPRSEDGEUTRAN

Specifications referenced by TR 44.901

TS 48.018 BSS-SGSN Interface for GPRS Control

Specifications that reference TR 44.901

TS 48.018 BSS-SGSN Interface for GPRS Control
TS 25.401 UTRAN Overall Architecture
TS 36.401 E-UTRAN Overall Architecture Description

Other specifications in the 44 series

TS 44.071 LMU-SMLC LCS Protocol Specification
TS 44.118 Radio Resource Control (RRC) Protocol for Iu Mode
TS 44.160 GERAN Iu Mode RLC/MAC Protocol Specification
TS 44.318 Generic Access Network (GAN) Interface Procedures

Related glossary terms

INFO NACC GERAN UTRAN MS CN SGSN WI QoS GPRS EDGE UMTS

Frequently asked questions

What is 3GPP TR 44.901?

3GPP TR 44.901 is the 3GPP Technical Report for Extended NACC for External Cell Change. Extends Network Assisted Cell Change (NACC) to support cell changes between different BSCs/RNCs to reduce service outage time during packet transfer.

Which 3GPP releases include TR 44.901?

TR 44.901 is published in 12 releases, from Rel-8 to Rel-19. The latest version on 3GPP Explorer is 19.0.0 (Rel-19).

What category does TR 44.901 belong to?

TR 44.901 belongs to the Radio Access (Mobility Management) category of 3GPP specifications. It applies to 3G networks.

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