ETSI TS 122 268 V15.2.0 (2018-10)

Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Public Warning System (PWS) requirements (3GPP TS 22.268 version 15.2.0 Release 15)

RTS/TSGS-0122268vf20

General Information

• Status: Published
• Publication Date: 03-Oct-2018
• Technical Committee: 3GPP SA 1 - Services
• Current Stage: 12 - Completion
• Completion Date: 04-Oct-2018

Standards Content (Sample)

TECHNICAL SPECIFICATION
Digital cellular telecommunications system (Phase 2+) (GSM);
Universal Mobile Telecommunications System (UMTS);
Public Warning System (PWS) requirements
(3GPP TS 22.268 version 15.2.0 Release 15)

R
GLOBAL SYSTEM FOR
MOBILE COMMUNICATIONS
3GPP TS 22.268 version 15.2.0 Release 15 1 ETSI TS 122 268 V15.2.0 (2018-10)

Reference
RTS/TSGS-0122268vf20
Keywords
GSM,UMTS
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3GPP TS 22.268 version 15.2.0 Release 15 2 ETSI TS 122 268 V15.2.0 (2018-10)
Intellectual Property Rights
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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", "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
3GPP TS 22.268 version 15.2.0 Release 15 3 ETSI TS 122 268 V15.2.0 (2018-10)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 4
1 Scope . 5
2 References . 5
3 Definitions and abbreviations . 6
3.1 Definitions . 6
3.2 Abbreviations . 6
4 General PWS Requirements . 6
4.1 Background . 6
4.2 High level general requirements for Warning Notification delivery . 6
4.3 Warning Notification Content . 7
4.4 Granularity of the distribution . 7
4.5 Support of Warning Notification Providers . 7
4.6 PWS-UE Requirements . 8
4.6.1 General Requirements . 8
4.6.2 Support of non-Warning Notification capable UEs . 8
4.6.3 Battery Life of PWS-UE . 8
4.6.4 Enabling and disabling of Warning Notifications . 8
4.7 Roaming Requirements . 9
4.8 Security Requirements . 9
4.9 Regulatory Requirements . 9
5 Earthquake and Tsunami Warning System . 9
5.1 Background . 9
5.2 Duration of delivery time . 10
5.3 Information element and volume . 10
5.4 Priority . 10
5.5 Roaming users . 11
6 CMAS Specific Requirements . 12
6.1 Introduction to CMAS . 12
6.2 Additional PWS Requirements Specific to CMAS . 12
7 EU-ALERT Specific Requirements . 13
7.1 Introduction to EU-ALERT . 13
7.2 Additional PWS Requirements Specific to EU-ALERT . 13
8 Korean Public Alert System specific Requirements . 14
8.1 Introduction to Korean Public Alert System . 14
8.2 Additional PWS Requirements Specific to Korean Public Alert System (KPAS) . 14
Annex A (informative): Change history . 16
History . 17

ETSI
3GPP TS 22.268 version 15.2.0 Release 15 4 ETSI TS 122 268 V15.2.0 (2018-10)
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.
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3GPP TS 22.268 version 15.2.0 Release 15 5 ETSI TS 122 268 V15.2.0 (2018-10)
1 Scope
This Technical Specification defines the stage one description of the Public Warning System (PWS) Requirements.
Stage one is the set of requirements seen primarily from the users’ and service providers’ points of view.
The scope of this TS covers the core requirements for the PWS that are sufficient to provide a complete service. This
TS also covers subsystem additional requirements for the Earthquake and Tsunami Warning System (ETWS) and the
Commercial Mobile Alert System (CMAS).
This TS includes information applicable to network operators, service providers, terminal and network manufacturers,
in case of deployment of PWS, ETWS, and or CMAS. PWS, ETWS and CMAS deployment depends on operator
decision or national regulations.
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] FCC 08-99: "Federal Communications Commission First Report and Order In the Matter of The

Commercial Mobile Alert System"; April 9, 2008.
[2] FCC 08-164: "Federal Communications Commission Second Report and Order and Further Notice
of Proposed Rulemaking In the Matter of The Commercial Mobile Alert System"; July 8, 2008.
[3] FCC 08-184: "Federal Communications Commission Third Report and Order and Further Notice
of Proposed Rulemaking In the Matter of The Commercial Mobile Alert System"; August 7, 2008.
[4] J-STD-100: "Joint ATIS/TIA-CMAS Mobile Device Behavior Specification"; January 30, 2009.
[5] 3GPP TR 21.905: "Vocabulary for 3GPP Specifications".
[6] ETSI TS 102 900: "European Public Warning System (EU-ALERT) using the Cell Broadcast
Service".
[7] TTA TTAK.KO-06.0263:"Korean Public Alert System over LTE network".
[8] FCC 16-127, Federal Communications Commission Report and Order and Further Notice of
Proposed Rulemaking In the Matter of Wireless Emergency Alerts Amendments to Part 11 of the
Commission’s Rules Regarding the Emergency Alert System; September 29, 2016.
[9] 3GPP TS 23.038; "Alphabets and language-specific information"
[10] FCC 18-4, Federal Communications Commission Second Report and Order and Second Order on
Reconsideration In the Matter of Wireless Emergency Alerts and Amendments to Part 11 of the
Commission’s Rules Regarding the Emergency Alert System; January 30, 2018
[11] 3GPP TS 22.071: “Location Services (LCS); Service description; Stage 1”
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3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in TR 21.905 [5] and the following apply. A
term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905 [5].
Commercial Mobile Alert System (aka, Wireless Emergency Alert): Public Warning System that delivers Warning
Notifications provided by Warning Notification Providers to CMAS capable PWS-UEs. CMAS defines the following
classes of Warning Notifications: Presidential, Imminent Threat, Public Safety, Child Abduction Emergency, and
State/Local WEA Test.
Earthquake and Tsunami Warning System: Public Warning System that delivers Warning Notifications specific to
Earthquake and Tsunami provided by Warning Notification Providers to the UEs which have the capability of receiving
Primary and Secondary Warning Notifications within Notification Areas through the 3GPP network
Notification Area: area where Warning Notifications are broadcast. This is an area that closely approximates the
geographical information provided by the Warning Notification Provider
PWS-UE: User Equipment (UE) which has the capability of receiving Warning Notifications within Notification Areas
through the 3GPP network and conforms to the behaviour specific to the PWS service such as dedicated alerting
indication and display of the Warning Notification upon reception
3.2 Abbreviations
For the purposes of the present document, the abbreviations given in TR 21.905 [5] 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 [5]
CMAS Commercial Mobile Alert System
EOC Emergency Operations Center
ETWS Earthquake and Tsunami Warning System
KPAS Korean Public Alert System
PWS Public Warning System
WEA Wireless Emergency Alert
4 General PWS Requirements
4.1 Background
Recently there has been an interest to ensure that the public has the capability to receive timely and accurate alerts,
warnings and critical information regarding disasters and other emergencies irrespective of what communications
technologies they use. As has been learned from disasters such as earthquakes, tsunamis, hurricanes and wild fires; such
a capability is essential to enable the public to take appropriate action to protect their families and themselves from
serious injury, or loss of life or property.
This interest to enhance the reliability, resiliency, and security of Warning Notifications to the public by providing a
mechanism to distribute Warning Notifications over 3GPP systems is the impetus for this Public Warning System
Technical Specification.
4.2 High level general requirements for Warning Notification
delivery
The following list gives the high level general requirements for Warning Notification delivery:
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- PWS shall be able to broadcast Warning Notifications to multiple users simultaneously with no
acknowledgement required.
- PWS shall be able to support concurrent broadcast of multiple Warning Notifications.
- Warning Notifications shall be broadcast to a Notification Area which is based on the geographical information
as specified by the Warning Notification Provider.
- PWS capable UEs (PWS-UE) in idle mode shall be capable of receiving broadcasted Warning Notifications.
Note: A bandwidth reduced low complexity UE or a UE supporting eDRX may not support all requirements for
PWS, including ETWS, CMAS, EU-Alert and KPAS
- PWS shall only be required to broadcast Warning Notifications in languages as prescribed by regulatory
requirements.
- Warning Notifications are processed by PWS on a first in, first out basis, subject to regulatory requirements.
- Reception and presentation of Warning Notifications to the user shall not pre-empt an active voice or data
session.
- Warning Notifications shall be limited to those emergencies where life or property is at imminent risk, and some
responsive action should be taken.
NOTE: This requirement does not prohibit the use of the operator’s network (i.e. broadcast technology)
implemented for Warning Notifications to be used for commercial services.
4.3 Warning Notification Content
PWS shall not modify or translate the Warning Notification content specified by the Warning Notification Provider.
It is expected that Warning Notifications would likely include the following five elements:
- Event Description
- Area Affected
- Recommended Action
- Expiration Time (with time zone)
- Sending Agency
Additional elements may be present, based on regulatory requirements.
There is a concern that URLs or telephone numbers in a Warning Notification could exacerbate wireless network
congestion at a time when network traffic is already dramatically increasing as individuals contact police, fire, and
rescue personnel, as well as their loved ones. Therefore, Warning Notifications should not contain anything that would
drive immediate and debilitating traffic loads into the PLMN (i.e., URLs or dialable numbers) unless required by
regional regulation.
4.4 Granularity of the distribution
Requirements for the granularity of the distribution of Warning Notifications include:
- Based on the geographical information indicated by the Warning Notification Provider, it shall be possible for
the PLMN operators to define the Notification Area based on their network configuration of the area coverage
such as distribution of cells, Node Bs, RNCs, etc.
4.5 Support of Warning Notification Providers
PLMN operators shall, at a minimum, be able to support the following functionalities through interaction with Warning
Notification Providers:
- Activation of Warning Notification delivery
It shall be possible for multiple Warning Notifications to be activated concurrently from one or more Warning
Notification Providers.
- Cancellation of Warning Notification delivery
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A cancellation is a command from the Warning Notification Provider to stop dissemination of a specific
Warning Notification.
- Updating of Warning Notification delivery
Warning Notification Providers update a previous Warning Notification to provide new instructions/information
to the PLMN operator. When the Warning Notification Provider updates a previous Warning Notification they
provide an identifier that allows the PLMN operator to associate the updated Warning Notification with the
previous Warning Notification.
Additional functionality may be required based on regulatory or operator policy requirements.
4.6 PWS-UE Requirements
4.6.1 General Requirements
PWS-UEs shall only be required to receive and present Warning Notifications in languages as presented by the Warning
Notification Provider. Regional/regulatory requirements may require the Warning Notifications to be broadcast in
multiple languages.
There shall be no requirement for language translation in the operator’s network or the UE.
It shall be possible for the Warning Notification to be displayed on the PWS-UE upon reception and without any user
interaction.
It shall be possible for users to configure the behavior of a PWS-UE with regard to Warning Notification alerting and
should allow at least volume adjustment.
...