ETSI TS 125 367 V12.0.0 (2014-10)

Universal Mobile Telecommunications System (UMTS); Mobility procedures for Home Node B (HNB); Overall description; Stage 2 (3GPP TS 25.367 version 12.0.0 Release 12)

RTS/TSGR-0225367vc00

General Information

• Status: Published
• Publication Date: 15-Oct-2014
• Technical Committee: 3GPP RAN 2 - Radio layer 2 specification and Radio layer 3 RR specification
• Current Stage: 12 - Completion
• Due Date: 16-Oct-2014
• Completion Date: 16-Oct-2014

Standards Content (Sample)

ETSI TS 125 367 V12.0.0 (2014-10)






TECHNICAL SPECIFICATION
Universal Mobile Telecommunications System (UMTS);
Mobility procedures for Home Node B (HNB);
Overall description;
Stage 2
(3GPP TS 25.367 version 12.0.0 Release 12)

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3GPP TS 25.367 version 12.0.0 Release 12 1 ETSI TS 125 367 V12.0.0 (2014-10)



Reference
RTS/TSGR-0225367vc00
Keywords
UMTS
ETSI
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3GPP TS 25.367 version 12.0.0 Release 12 2 ETSI TS 125 367 V12.0.0 (2014-10)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://ipr.etsi.org).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or
GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables.
The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under
http://webapp.etsi.org/key/queryform.asp.
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "may not", "need", "need not", "will",
"will not", "can" and "cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms
for the expression of provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI

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3GPP TS 25.367 version 12.0.0 Release 12 3 ETSI TS 125 367 V12.0.0 (2014-10)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 4
1 Scope . 5
2 References . 5
3 Definitions, symbols and abbreviations . 5
3.1 Definitions . 5
3.2 Abbreviations . 6
4 Overview . 7
5 CSG Identification . 8
6 CSG Selection . 8
6.1 Manual CSG ID Selection . 8
7 CSG Cell Reselection . 9
7.1 Measurement Rules for CSG Cells . 9
7.2 Reselection to CSG Cell . 9
7.2.1 Criteria for Intra-frequency Cell Reselection . 9
7.2.2 Criteria for Inter-frequency Cell Reselection . 9
7.2.3 Criteria for Inter-RAT Cell Reselection . 9
7.3 Reselection from CSG Cell . 9
7.3.1 Criteria for Intra-frequency Cell Reselection . 9
7.3.2 Criteria for Inter-frequency Cell Reselection . 9
7.3.3 Criteria for Inter-RAT Cell Reselection . 9
7.4 Reselection from CSG Cell to CSG Cell . 10
7.5 Parameters for CSG Cell Reselection . 10
8 CSG and Hybrid Cell Handover . . 10
8.1 Handover to CSG/Hybrid Cell . 10
8.1.1 CSG/Hybrid Cell Intra-frequency Measurement Procedure . 11
8.1.2 CSG/Hybrid Cell Inter-frequency/Inter-RAT Measurement Procedure . 12
8.2 Handover from CSG Cell . 13
8.3 Handover from CSG Cell to CSG Cell . 13
9 Support of Hybrid Cells . 13
9.1 Measurement Rules . 13
9.2 Reselection . 13
Annex B (informative): Void . 14
Annex C (informative): Change history . 15
History . 16

ETSI

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3GPP TS 25.367 version 12.0.0 Release 12 4 ETSI TS 125 367 V12.0.0 (2014-10)
Foreword
rd
This Technical Specification has been produced by the 3 Generation Partnership Project (3GPP).
The contents of the present document are subject to continuing work within the TSG and may change following formal
TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an
identifying change of release date and an increase in version number as follows:
Version x.y.z
where:
x the first digit:
1 presented to TSG for information;
2 presented to TSG for approval;
3 or greater indicates TSG approved document under change control.
y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections,
updates, etc.
z the third digit is incremented when editorial only changes have been incorporated in the document.
ETSI

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3GPP TS 25.367 version 12.0.0 Release 12 5 ETSI TS 125 367 V12.0.0 (2014-10)
1 Scope
This document provides a high level description of the mobility procedures applicable to Home NodeB support in the
current Release. Where appropriate, the reasons behind the agreements are provided. Throughout this document, unless
otherwise stated, the UE is assumed to be a current Release UE that supports the Closed Subscriber Group (CSG)
feature, whether it is actually a member of a CSG or not. A UE that does not support the CSG feature is not required to
support any of the procedures stated in this document.
2 References
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] 3GPP TR 21.905: "Vocabulary for 3GPP Specifications".
[2] 3GPP TS 25.304: "UE procedures in idle mode and procedures for cell reselection in connected mode".
[3] 3GPP TS 25.331: "Radio Resource Control (RRC) protocol specification".
[4] 3GPP TS 23.011: "Service accessibility".
[5] 3GPP TS 22.220: "Service Requirements for Home NodeBs and Home eNodeBs".
[6] 3GPP TS 25.467: "UTRAN architecture for 3G Home Node B (HNB)".
[7] 3GPP TS 25.214: "Physical layer procedures (FDD)".
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply.
Acceptable Cell: A cell that satisfies certain conditions as specified [2]. A UE can always attempt emergency calls on
an acceptable cell.
CSG whitelist: A list provided by NAS containing all the CSG Identities of the CSGs to which the subscriber belongs.
NOTE: This list is known as Allowed CSG List in Rel-8 Access Stratum specifications.
Available PLMN: A PLMN for which the UE has found at least one cell and read its PLMN identity.
Barred Cell: A cell a UE is not allowed to camp on.
Camped on a cell: UE has completed the cell selection/reselection process and has chosen a cell. The UE monitors
system information and (in most cases) paging information.
Camped on any cell: UE is in idle mode and has completed the cell selection/reselection process and has chosen a cell
irrespective of PLMN identity.
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3GPP TS 25.367 version 12.0.0 Release 12 6 ETSI TS 125 367 V12.0.0 (2014-10)
Closed Subscriber Group (CSG): A Closed Subscriber Group identifies subscribers of an operator who are permitted
to access one or more cells of the PLMN but which have restricted access (CSG cells).
CSG Cell: A cell, part of the PLMN, broadcasting a CSG Indicator that is set to TRUE and a specific CSG identity. A
CSG cell is accessible by the members of the closed subscriber group for that CSG identity.
CSG Identity (CSG ID): An identifier broadcast by a CSG/Hybrid cell or cells and used by the UE to facilitate access
for authorised members of the associated Closed Subscriber Group.
CSG member cell: A cell broadcasting the identity of the selected PLMN, registered PLMN or equivalent PLMN and
for which the CSG whitelist of the UE includes an entry comprising cell"s CSG ID and the respective PLMN identity.
DRX cycle: Individual time interval between monitoring Paging Occasion for a specific UE.
Equivalent PLMN list: List of PLMNs considered as equivalent by the UE for cell selection, cell reselection , MBSFN
Cluster selection MBSFN Cluster reselection and handover according to the information provided by the NAS.
Home NodeB (HNB): A HNB is a customer-premises equipment that connects a 3GPP UE over UTRAN wireless air
interface to a mobile operator"s network using broadband IP backhaul.
HNB Name: The Home NodeB Name is a broadcast string in free text format that provides a human readable name for
the Home NodeB CSG identity.
Home PLMN: A PLMN where the Mobile Country Code (MCC) and Mobile Network Code (MNC) of the PLMN
identity are the same as the MCC and MNC of the IMSI.
Hybrid cell: A cell broadcasting a CSG identity which is accessible as a CSG cell by UEs which are members of the
CSG and as a normal cell by all other UEs.
Non-CSG Cell: A cell that is not a CSG cell, e.g. a macro cell.
Process: A local action in the UE invoked by a RRC procedure or an Idle Mode procedure.
Radio Access Mode: Radio access mode of the cell, FDD or TDD.
Radio Access Technology: Type of technology used for radio access, for instance UTRA or GSM.
Registered PLMN: This is the PLMN on which certain Location Registration outcomes have occurred.
Registration Area: (NAS) registration area is an area in which the UE may roam without a need to perform location
registration, which is a NAS procedure.
Reserved Cell: A cell on which camping is not allowed, except for particular UEs, if so indicated in the system
information.
Restricted Cell: A cell on which camping is allowed, but access attempts are disallowed for UEs whose access classes
are indicated as barred.
Selected PLMN: This is the PLMN that has been selected by the NAS, either manually or automatically.
Serving cell: The cell on which the UE is camped.
Strongest cell: The cell on a particular carrier that is considered strongest according to the layer 1 cell search procedure
[7]. As the details of the layer 1 cell search are implementation dependent, the precise definition of 'strongest cell' is
also implementation dependent.
Suitable Cell: This is a cell on which an UE may camp.
3.2 Abbreviations
For the purposes of the present document, the abbreviations given in TR 21.905 [1] and the following apply. An
abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in
TR 21.905 [1].
AS Access Stratum
ETSI

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3GPP TS 25.367 version 12.0.0 Release 12 7 ETSI TS 125 367 V12.0.0 (2014-10)
BCCH Broadcast Control Channel
CM Connection Management
CN Core Network
CSG Closed Subscriber Group
DRX Discontinuous Reception
E-UTRA Evolved UMTS Terrestrial Radio Access
FDD Frequency Division Duplex
GPRS General Packet Radio Service
GSM Global System for Mobile Communications
HCS Hierarchical Cell Structure
HNB Home NodeB
IMSI International Mobile Subscriber Identity
MCC Mobile Country Code
MM Mobility Management
MNC Mobile Network Code
NAS Non-Access Stratum
PCH Paging Channel
PI Page Indicator
PICH Page Indication Channel
PLMN Public Land Mobile Network
RAT Radio Access Technology
RRC Radio Resource Control
SAP Service Access Point
TDD Time Division Duplex
TMGI Temporary Mobile Group Identity
UE User Equipment
UMTS Universal Mobile Telecommunications System
UTRA UMTS Terrestrial Radio Access
UTRAN UMTS Terrestrial Radio Access Network
4 Overview
A Home NodeB may provide restricted access to only UEs belonging to a Closed Subscriber Group (CSG). One or
more of such cells providing restricted access, known as CSG cells, are identified by a unique numeric identifier called
CSG Identity. To facilitate access control, a UE with CSG subscription would have an CSG whitelist, which contains
one or more CSG Identities associated with the CSG cells on which the UE is allowed access. The UE uses the CSG
whitelist along with the CSG Identity and associated PLMN ID broadcast by the CSG Cells in CSG cell selection and
reselection.
A HNB can also be operated as a hybrid cell. A hybrid cell is accessed as a CSG cell by a UE whose CSG whitelist
contains the cell"s CSG ID and associated PLMN ID and as a normal cell by all other UEs. Members of the CSG are
expected to receive preferential access according to [5].
NOTE: Although pre-Rel-9 UEs are able to camp on hybrid cells (which would be regarded as normal cells for
access) there is no possibility for these UEs to identify a hybrid cell as a CSG cell even though the cell"s
CSG identity and associated PLMN ID are in the UE"s CSG whitelist.
In addition, manual selection of CSG Identity is
...