ETSI TBR 019 ed.2 (1996-09)

European digital cellular telecommunications system (Phase 2); Attachment requirements for Global System for Mobile communications (GSM) mobile stations; Access

RTBR/SMG-0019TTCN

Evropski digitalni celični telekomunikacijski sistem (faza 2) - Priključitvene zahteve za mobilne postaje globalnega sistema mobilnih komunikacij (GSM) - Dostop

General Information

• Status: Published
• Publication Date: 23-Oct-1996
• Technical Committee: SMG - Special Mobile Group
• Current Stage: 12 - Completion
• Due Date: 30-Oct-1996
• Completion Date: 24-Oct-1996
• Mandate: T-237E-A
• Ref Project: SIST TBR 019 E2:2004 - European digital cellular telecommunications system (Phase 2); Attachment requirements for Global System for Mobile communications (GSM) mobile stations; Access

Standards Content (Sample)

SLOVENSKI STANDARD
SIST TBR 019 E2:2004
01-oktober-2004
(YURSVNLGLJLWDOQLFHOLþQLWHOHNRPXQLNDFLMVNLVLVWHPID]D3ULNOMXþLWYHQH]DKWHYH
]DPRELOQHSRVWDMHJOREDOQHJDVLVWHPDPRELOQLKNRPXQLNDFLM*60'RVWRS
European digital cellular telecommunications system (Phase 2); Attachment
requirements for Global System for Mobile communications (GSM) mobile stations;
Access
Ta slovenski standard je istoveten z: TBR 019 Edition 2
ICS:
33.070.50 Globalni sistem za mobilno Global System for Mobile
telekomunikacijo (GSM) Communication (GSM)
SIST TBR 019 E2:2004 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST TBR 019 E2:2004

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SIST TBR 019 E2:2004
TECHNICAL TBR 19
BASIS for September 1996
REGULATION Second Edition
Source: ETSI TC-SMG Reference: RTBR/SMG-0019TTCN
ICS: 33.060.50
Key words: European digital cellular telecommunications system, Global System for Mobile communications
(GSM)
R
GLOBAL SYSTEM FOR
MOBILE COMMUNICATIONS
European digital cellular telecommunications system (Phase 2);
Attachment requirements for Global System for Mobile
communications (GSM) mobile stations;
Access
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: [e-mail]
Tel.: [phone] - Fax: [phone]
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1996. All rights reserved.

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TBR 19: September 1996
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

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TBR 19: September 1996
Contents
Foreword .5
1 Scope .7
2 Normative references.8
3 Abbreviations.9
4 Requirements.10
Annex A (normative): The TBR Requirement Table (TBR-RT).59
A.1 Introduction to the TBR-RT .59
A.2 Format of the tables .59
A.3 References to ETS 300 607-1 (GSM 11.10-1).60
A.4 Notations used in the TBR-RT .60
A.4.1 Status Notations.60
A.4.2 Support Answer Notations .60
A.5 The TBR Requirement Tables .60
A.5.1 Static Requirements, TBR-RT A.61
A.5.1.1 Types of Mobile Stations .61
A.5.1.2 Mobile Station Features .61
A.5.1.3 Teleservices .63
A.5.1.4 Bearer Services.63
A.5.1.5 Supplementary Services .64
A.5.1.6 Bearer Capability Information.65
A.5.1.7 Additional Information.77
A.5.2 Dynamic Requirements, TBR-RT B.81
History.103

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Foreword
This second edition Technical Basis for Regulation (TBR) has been produced by the Special Mobile Group
(SMG) Technical Committee of the European Telecommunications Standards Institute (ETSI). This TBR
covers the general access requirements for terminal equipment for the Global System for Mobile
communications (GSM) mobile services.
This second edition TBR contains the procedures and requirements for the approval testing of GSM
terminal equipment for access.
The requirements of other TBRs apply in addition to this TBR.
For each test, supplementary information is provided, giving a justification why this item has been selected
for regulatory testing, and a reference to the relevant article of the Terminal Directive [1].
This TBR is based on ETS 300 607-1 (GSM 11.10-1) [2].
This second edition TBR 19 corresponds to TC-SMG TBR 19 version 4.1.0 and is a result of further work
within TC-SMG.
NOTE: This TBR for Phase 2 may be developed in stages. The first release will include, as a
minimum, all of the basic Phase 2 requirements for full rate, half rate, and primary and
extended bands. Subsequent releases will include additional requirements.

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TBR 19: September 1996
1 Scope
This Technical Basis for Regulation (TBR) specifies the technical requirements to be met by terminal
equipment capable of connecting to a public telecommunications network. These requirements apply to
terminals for Phase 2 of the public land mobile radio service, operating in the 900 MHz band with a
channel separation of 200 kHz, utilising constant envelope modulation and carrying traffic channels
according to the Time Division Multiple Access (TDMA) principle.
This TBR specifies the terminal equipment access requirements for the GSM 900 version of the Global
System for Mobile communications (GSM).
For each test purpose and its corresponding conformance requirement, a reference is given to the test
method in ETS 300 607-1 (GSM 11.10-1) [2]. The requirements apply at the air interface and the
Subscriber Identity Module - Mobile Equipment interface for the access requirements, which may be
stimulated to perform the tests by additional equipment if necessary.
The measurement uncertainty is described in ETS 300 607-1 (GSM 11.10-1) [2].
This TBR covers the essential requirements of the Terminal Directive 91/263/EEC [1] Articles 4d, 4e, 4f.
Non access related aspects of speech telephony, where Article 4g has been applied, are covered by
TBR 20.
The Terminal Directive 91/263/EEC [1] Articles 4a and 4b are covered by other directives, and, therefore,
not by this TBR.
In this TBR, there are no Electromagnetic Compatibility technical requirements in terms of the Terminal
Directive 91/263/EEC [1], Article 4c.
NOTE: Technical Requirements for EMC performance and testing of the equipment are
covered by the relevant standards applicable to the EMC Directive 89/336/EEC,
Annex A.
Terminal equipment may be subject to additional requirements in other Common Technical Regulations
(CTR) depending on the equipments functionality.
ETS 300 607-1 (GSM 11.10-1) [2] constitutes the conformance test suite for GSM. The verification of the
conformance requirements in this TBR is based on the tests described in this reference. The set of
requirements in ETS 300 607-1 (GSM 11.10-1) [2] and the set of requirements in this TBR need not be
identical.
Some requirements only apply to specific types of mobile station (e.g. data tests only apply to mobile
stations with a data facility). The TBR also indicates the specific test which should be carried out for each
mobile station type.
An active accessory is covered by this TBR if it modifies the terminal performance in an aspect which
affects conformance to essential requirements.
NOTE: Only active devices are subject to this TBR. Accessories may be tested with specific
terminals, and either approved for use with those terminals only, or may possibly be
approved for use with a wider range of terminals, depending on the nature and effect
of the accessory.

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2 Normative references
This TBR incorporates, by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references subsequent amendments to or revision of any of these publications apply
to the requirements specified in this TBR, only when incorporated in it by amendment or revision. For
undated references the latest edition of the publication referred to applies.
[1] Terminal Directive 91/263/EEC: "Council directive of 29 April 1991 on the
approximation of the laws of the Member States concerning telecommunications
terminal equipment, including the mutual recognition of their conformity. ("The
Terminal Directive")".
[2] ETS 300 607-1 (GSM 11.10-1 version 4.14.0): "Digital cellular
telecommunications system (phase 2); Mobile station conformity specifications".
[3] TBR 20: "European digital cellular telecommunications system; Attachment
requirements for Global System for Mobile communications (GSM) mobile
stations; Telephony".
[4] ETS 300 500 (GSM 02.01 version 4.6.0): "Digital cellular telecommunication
system (Phase 2); Principles of telecommunication services supported by a
GSM Public Land Mobile Network (PLMN)".
[5] ETS 300 501 (GSM 02.02 version 4.2.2): "Digital cellular telecommunication
system (Phase 2); Bearer Services (BS) supported by a GSM Public Land
Mobile Network (PLMN)".
[6] ETS 300 502 (GSM 02.03 version 4.3.1): "Digital cellular telecommunication
system (Phase 2); Teleservices supported by a GSM Public Land Mobile
Network (PLMN)".
[7] ETS 300 503 (GSM 02.04 version 4.9.1): "Digital cellular telecommunication
system (Phase 2); General on supplementary services".
[8] ETS 300 504 (GSM 02.06 version 4.4.0): "Digital cellular telecommunication
system (Phase 2); Types of Mobile Stations (MS)".
[9] ETS 300 505 (GSM 02.07 version 4.7.0): "Digital cellular telecommunication
system (Phase 2); Mobile Station (MS) features".
[10] ETS 300 507 (GSM 02.11 version 4.8.0): "Digital cellular telecommunication
system (Phase 2); Service accessibility".
[11] ETS 300 508 (GSM 02.16 version 4.5.0): "Digital cellular telecommunication
system (Phase 2); International Mobile station Equipment Identities (IMEI)".
[12] ETS 300 511 (GSM 02.30 version 4.13.0): "Digital cellular telecommunication
system (Phase 2); Man-Machine Interface (MMI) of the Mobile Station (MS)".
[13] ETS 300 536 (GSM 03.40 version 4.12.0): "Digital cellular telecommunication
system (Phase 2); Technical realization of the Short Message Service (SMS)
Point to Point (PP)".
[14] ETS 300 537 (GSM 03.41 version 4.11.0): "Digital cellular telecommunication
system (Phase 2); Technical realization of Short Message Service Cell
Broadcast (SMSCB)".
[15] ETS 300 538 (GSM 03.45 version 4.5.0): "Digital cellular telecommunication
system (Phase 2); Technical realization of facsimile group 3 transparent".

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[16] ETS 300 539 (GSM 03.46 version 4.1.2): "Digital cellular telecommunication
system (Phase 2); Technical realization of facsimile group 3 non-transparent".
[17] ETS 300 551 (GSM 04.02 version 4.0.4): "Digital cellular telecommunication
system (Phase 2); GSM Public Land Mobile Network (PLMN) access reference
configuration".
[18] ETS 300 557 (GSM 04.08 version 4.13.0): "Digital cellular telecommunication
system (Phase 2); Mobile radio interface layer 3 specification".
[19] ETS 300 577 (GSM 05.05 version 4.13.0): "Digital cellular telecommunication
system (Phase 2); Radio transmission and reception".
[20] ETS 300 582 (GSM 07.01 version 4.10.0): "Digital cellular telecommunication
system (Phase 2); General on Terminal Adaptation Functions (TAF) for Mobile
Stations (MS)".
3 Abbreviations
ACK ACKnowledgement
AoC Advice of Charge
AoCC Advice of Charge Charging supplementary service
ACM Address Complete Message
ACMM Address Complete Message Maximum
ARFCN Absolute Radio Frequency Channel Number
BA BCCH Allocation
BC Bearer Capability
BCCH Broadcast Control CHannel
CC Call Control
CCCH Common Control CHannel
CFB Call Forwarding mobile subscriber Busy
CFNRc Call Forwarding MS Not Reachable
CFU Call Forwarding Unconditional
CM Connection management
CTR Common Technical Regulations
DCD Data Call Direction
DRX Discontinuous Reception (mechanism)
DTE Data Terminal Equipment
DTMF Dual Tone Multi Frequency
DTX Discontinuous Transmission (mechanism)
FACCH Fast Associated Control CHannel
FDN Fixed Dialling Number
I Information (frame)
IMEI International Mobile station Equipment Identity
IMSI International Mobile Subscriber Identity
LA Location Area
LAI Location Area Identification
ME Mobile Equipment
MM Mobility Management
MMI Man Machine Interface
MO Mobile Originated
MOC Mobile Originated Call
MS GSM Mobile Station
MT Mobile Terminated
MTC Mobile Terminated Call
N(R) Receive sequence Number
N(S) Send sequence Number
OACSU Off Air Call Set Up
PLMN Public Land Mobile Network
RACH Random Access CHannel
REJ REJect (frame)
RF Radio Frequency
RMS Root Mean Square (value)

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RNR Receiver Not Ready (frame)
RR Radio Resource (management entity / connection)
RR Receive Ready (frame) (in L2)
RST Reset
SABM Set Asynchronous Balanced Mode (frame)
SAPI Service Access Point Identifier
SDCCH Stand-alone Dedicated Control CHannel
SIM Subscriber Identity Module
SMS Short Message Service
SS System Simulator
TCH Traffic CHannel
TCH/FS Full rate Traffic CHannel for Speech
TCH/HS Half rate Traffic CHannel for Speech
TDMA Time Division Multiple Access
TI Transaction Identifier
TMSI Temporary Mobile Subscriber Identity
UA Unnumbered Acknowledge (frame)
UDI Unrestricted Digital Information
USSD Unstructured Supplementary Service Data
4 Requirements
The following table contains all requirements that are needed to meet the essential requirements as
defined in the Terminal Directive [1]. A justification according to article 4 of the Terminal Directive is given
by stating the relevant categories (c to f) together with a text supporting the justification.
The entries are defined as follows:
− "ETS 300 607-1 Item" defines the item number of the conformance requirement and also the
reference to ETS 300 607-1 (GSM 11.10-1) [2]. This reference is a normative reference to a
subclause of ETS 300 607-1 (GSM 11.10-1) [2] containing the conformance requirement text, and
references to the base standard.

- "Description" contains a short description of the requirement
- "TBR Justification" contains supplementary information to explain the justification of the requirement
according to article 4 of the Terminal Directive [1].
- "TD Cat" defines the category according to article 4 of the Terminal Directive [1].
- "Test Cat" defines whether the requirement is covered by a "special test situation" (e.g. a
manufacturer’s declaration of some form). An "X" indicates a special test situation, whilst, a blank
entry indicates conformity is by the test referred to by this TBR.

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Table 1: Requirements and Justifications
ETS 300 607-1 DESCRIPTION TBR JUSTIFICATION TD Cat Test
Item Cat
11.1.1 Verification of support and To ensure that the MS correctly f
non-support of services (MT). accepts BC(s) from the network to
ensure correct interworking with the
network
11.1.2 Verification of support and To ensure that the MS correctly f
non-support of services (MO). reports BC(s) to the network to ensure
correct interworking with the network
11.2 Verification of support of the To ensure correct interworking with a f
single numbering scheme network supporting single numbering
scheme
11.3 Verification of non-support of If the MS incorrectly supports AoCC d,f
services. (Advice of Charge incorrect charging may result. If the
Charging, AOCC) MS incorrectly indicates support of
AoCC the network may not correctly
decide whether access is allowed.
11.4 Verification of non-support of If the MS supports AoCC incorrect
f
services. (Call Hold) charging may result If the MS
incorrectly indicates non-support of
call hold.
11.5 Verification of non-support of If the MS supports AoCC incorrect f
services. (MultiParty) charging may result. If the MS
incorrectly indicates non-support of
multi-party.
11.6 Verification of non-support of If a fixed dialling number SIM is d,f X
feature. (Fixed dialling inserted into a MS not rejecting other
number) call setups, calls may be made (and
charged) to non-authorised numbers.
11.7 IMEI security If an IMEI could be changed without X
d
authorisation security mechanisms
based on the IMEI would not work.
12.1.1 Conducted spurious Non compliance in this area may e
emissions - MS allocated a cause interference to other spectrum
channel users.
12.1.2 Conducted spurious Non compliance in this area may e
emissions - MS in idle mode cause interference to other spectrum
users.
12.2.1 Radiated spurious emissions Non compliance in this area may e
- MS allocated a channel cause interference to other spectrum
users.
12.2.2 Radiated spurious emissions Non compliance in this area may e
- MS in idle mode cause interference to other spectrum
users.
13.1 Transmitter - Frequency error Non Compliance in this area may e
and phase error impair establishment and the
maintaining of the call.
13.2 Transmitter - Frequency error Non Compliance in this area may e
under multipath and impair establishment and the
interference conditions maintaining of the call.
13.3-1 Transmitter output power and Non Compliance in this area may e
burst timing - MS with impair establishment and the
permanent antenna connector maintaining of the call or may cause
interference to other spectrum users.

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Table 1: Requirements and Justifications (continued)
ETS 300 607-1 DESCRIPTION TBR JUSTIFICATION TD Cat Test
Item Cat
13.3-2 Transmitter output power and Non Compliance in this area may e X
burst timing - MS with integral impair establishment and the
antenna maintaining of the call or may cause
interference to other spectrum users.
13.4 Transmitter - Output RF Non compliance in this area may e
spectrum cause interference to other spectrum
users.
14.1.1.1 Receiver / Bad Frame Non compliance in this area may e X
Indication - TCH/FS - degrade speech quality.
Random RF input
14.1.1.2 Receiver / Bad Frame Non compliance in this area may e
Indication - TCH/FS - degrade speech quality.
Frequency hopping and
downlink DTX
14.1.2.1 Receiver / Bad Frame Non compliance in this area may e X
Indication - TCH/HS - degrade speech quality.
Random RF input
14.1.2.2 Receiver / Bad Frame Non compliance in this area may e
Indication - TCH/HS - degrade speech quality.
Frequency hopping and
downlink DTX
14.2.1 Receiver / Reference Non compliance in this area may f
sensitivity - TCH/FS degrade speech quality and may
impair call maintenance.
14.2.2 Receiver / Reference Non compliance in this area may f
sensitivity - TCH/HS degrade speech quality and may
impair call maintenance.
14.2.3 Receiver / Reference Non Compliance in this area may f
sensitivity - FACCH/F impair establishment and the
maintaining of the call.
14.2.4 Receiver / Reference Non Compliance in this area may f
sensitivity - FACCH/H impair establishment and the
maintaining of the call.
14.2.5 Receiver / Reference Non Compliance in this area may f X
sensitivity - full rate data impair establishment and the
channels maintaining of the call.
14.2.6 Receiver / Reference Non Compliance in this area may f X
sensitivity - half rate data impair establishment and the
channels maintaining of the call.
14.3 Receiver / Usable receiver Non compliance in this area may e
input level range degrade speech quality and may
impair call maintenance.
14.4.1 Co-channel rejection - Non compliance in this area may e
TCH/FS degrade speech quality and may
impair call maintenance.
14.4.2 Co-channel rejection - Non compliance in this area may f
TCH/HS (speech frames) degrade speech quality and may
impair call maintenance.
14.4.4 Co-channel rejection - Non Compliance in this area may f
FACCH/F impair establishment and the
maintaining of the call.
14.4.5 Co-channel rejection - Non Compliance in this area may f
FACCH/H impair establishment and the
maintaining of the call.

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Table 1: Requirements and Justifications (continued)
ETS 300 607-1 DESCRIPTION TBR JUSTIFICATION TD Cat Test
Item Cat
14.5.1 Adjacent channel rejection - Non compliance in this area may e
speech channels degrade speech quality and may
impair call maintenance.
14.5.2 Adjacent channel rejection - Non Compliance in this area may f
control channels impair establishment and the
maintaining of the call.
14.6.1 Intermodulation rejection - Non compliance in this area may
e
speech channels degrade speech quality and may
impair call maintenance.
14.6.2 Intermodulation rejection - Non Compliance in this area may f
control channels impair establishment and the
maintaining of the call.
14.7.1 Blocking and spurious Non compliance in this area may e
response - speech channels degrade speech quality and may
impair call maintenance.
14.7.2 Blocking and spurious Non Compliance in this area may f X
response - control channels impair establishment and the
maintaining of the call.
14.8.1 AM suppression - speech Non compliance in this area may f
channels impair establishment and
maintenance of the call
14.8.2 AM suppression - control Non compliance in this area may f
channels impair establishment and
maintenance of the call
15 Timing advance and absolute If the timing advance is set or reported f
delay wrongly the establishment or
maintenance of a connection may be
disturbed. Calls on adjacent timeslots
may be disturbed.
16 Reception time tracking If the MS does not respond correctly f
speed to changes in timing, the call may drop
or interference may be caused to
other users.
17.1 Access times during There may be an unacceptable f
handover - Intra cell channel audible break in the speech if this time
change is exceeded.
17.2 Access times during Tp1/2: There may be an unacceptable f
handover - Inter cell handover audible break in the speech if this time
is exceeded. Tp3/4: The call may drop
if these requirements are not met.
18 Temporary reception gaps Non Compliance in this area may f
impair the holding of the connection.
19.1 Channel release after Failure in these requirements will e,f
unrecoverable errors - 1 result in incorrect call holding and
clearance performance in marginal RF
signal conditions.
19.2 Channel release after Failure in these requirements will e,f
unrecoverable errors - 2 result in incorrect call holding and
clearance performance in marginal RF
signal conditions.
19.3 Channel release after Failure in these requirements will
e,f
unrecoverable errors - 3 result in incorrect call holding and
clearance performance in marginal RF
signal conditions.

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Table 1: Requirements and Justifications (continued)
ETS 300 607-1 DESCRIPTION TBR JUSTIFICATION TD Cat Test
Item Cat
20.1 Cell Selection An MS which does not select the e,f
correct cell at switch on, may not
camp onto the optimum cell for
establishing a connection with the
network, or may not offer service at all
20.2 Cell selection with varying An MS which incorrectly averages e,f
signal strength values. signal strength values during cell
selection, may not camp onto the
optimum cell for establishing a
connection with the network
20.3 Basic Cell Reselection An MS which reselects cells d,e,f
incorrectly, may not camp onto the
optimum cell for establishing a
connection with the network
20.4 Cell reselection using An MS which reselects cells d,e,f
TEMPORARY_OFFSET, incorrectly, may not camp onto the
CELL_RESELECT_OFFSET optimum cell for establishing a
and PENALTY_TIME connection with the network
parameters
20.5 Cell reselection using An MS which reselects incorrectly, d,e,f
parameters transmitted in the may not camp onto the optimum cell
SYSTEM INFORMATION for establishing a connection with the
TYPE 2bis, 7 and 8 network
messages
20.6 Cell Reselection Timings An MS which reselects cells d,e,f
incorrectly, may not camp onto the
optimum cell for establishing a
connection with the network
20.7 Priority of Cells An MS which reselects cells d,e,f
incorrectly, may not camp onto the
optimum cell for establishing a
connection with the network. Too
frequent reselections may cause
increased network signalling load at
LA boundaries, or missed paging
messages
20.8 Cell Reselection when C1 An MS that selects a cell of incorrect d,e,f
(serving cell) < 0 for 5 secs priority or incorrectly uses the cell
selection parameters, may not camp
onto the optimum cell for establishing
a connection with the network
20.9 Running average of An MS which incorrectly calculates the d,e,f
surrounding cell BCCH carrier C1 parameter may not camp onto the
signal levels optimum cell for establishing a
connection with the network, Too
frequent reselections may cause
increased network signalling load at
LA boundaries, or missed paging
messages

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Table 1: Requirements and Justifications (continued)
ETS 300 607-1 DESCRIPTION TBR JUSTIFICATION TD Cat Test
Item Cat
20.10 Running average of serving An MS which incorrectly averages d,e,f
cell BCCH carrier signal level signal levels may not camp onto the
optimum cell for establishing a
connection with the network, Too
frequent reselections may cause
increased network signalling load at
LA boundaries, or missed paging
messages
20.11 Updating list of 6 strongest An MS which incorrectly averages d,e,f
neighbour carriers and signal levels may not camp onto the
decoding BCCH info of a new optimum cell for establishing a
carrier on the list. connection with the network, Too
frequent reselections may cause
increased network signalling load at
LA boundaries, or missed paging
messages
20.12 Decoding the BCCH An MS that fails to decode the BCCHs
d,e,f
information of the neighbour of surrounding cells correctly, may not
carriers on the list of six reselect the optimum cell for
strongest neighbour carriers. establishing a connection with the
network., This may cause increased
network signalling load at LA
boundaries
20.13 Decoding the BSIC of the An MS that fails to decode the BSICs d,e,f
neighbour carriers on the list of surrounding cells correctly, may not
of six strongest neighbour reselect the optimum cell for
carriers. establishing a connection with the
network. This may cause increased
network signalling load at LA
boundaries
20.14 Emergency calls An MS that fails to work correctly in X
d,f
the limited service state may not be
able to establish a connection for an
emergency call. It may also attempt to
establish a connection with a network
that is not permitted
20.15 Cell Reselection due to MS An MS which fails to reselect correctly d,e,f
rejection "LA not allowed" when rejected with the cause "LA not
allowed" may attempt to establish a
connection on a cell which is not
allowed, or not the optimum cell,
causing increased interference in the
network
20.16 Downlink Signalling Failure An MS which fails to reselect correctly d,e,f
in conjunction with the DSC counter,
may not select the optimum cell for
establishing a connection with the
network, or may not offer service at all
20.17 Cell Selection if no suitable An MS which is unable to reselect a f
cell found in 10 secs suitable cell and does not perform a
cell selection, may
...