ETSI TS 103 428 V1.1.1 (2016-06)

Mobile Standards Group (MSG); eCall HLAP Interoperability Testing

DTS/MSG-0016

General Information

• Status: Published
• Publication Date: 15-Jun-2016
• Technical Committee: MSG - Mobile Standards Group
• Current Stage: 12 - Completion
• Due Date: 15-Jun-2016
• Completion Date: 16-Jun-2016

Standards Content (Sample)

ETSI TS 103 428 V1.1.1 (2016-06)






TECHNICAL SPECIFICATION
Mobile Standards Group (MSG);
eCall HLAP Interoperability Testing

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2 ETSI TS 103 428 V1.1.1 (2016-06)



Reference
DTS/MSG-0016
Keywords
ecall, interoperability, testing

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3 ETSI TS 103 428 V1.1.1 (2016-06)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 6
3 Definitions and abbreviations . 7
3.1 Definitions . 7
3.2 Abbreviations . 7
4 Conventions . 8
4.1 Interoperability test process . 8
4.1.1 Principles . 8
4.1.2 The test description proforma . 8
4.1.3 Interoperable Functions Statement . 9
4.2 Tooling . 9
4.3 Test Description naming convention . 10
4.4 Test Summary . 10
5 Test Bed Architecture . 11
5.1 Test site layout . 11
5.2 HLAP flow diagram . 12
6 Test Configurations . 14
6.1 Basic Interoperability Test Configuration . 14
6.2 Optional Interoperability Test Configurations. 14
6.2.1 eCall_CFG_02 . 14
6.2.2 eCall_CFG_03 . 14
6.2.3 eCall_CFG_04 . 15
6.3 Default pre-test conditions . 15
6.4 Interoperable Functions Statement (IFS) . 15
6.5 Test Configuration parameters . 16
7 eCall test scenarios . 16
7.0 Introduction . 16
7.1 Mandatory test scenarios . 16
7.1.1 MSD transmission / reception / acknowledgement with PSAP in Pull mode . 16
7.1.2 MSD transmission / reception / acknowledgement with PSAP in Push mode. 17
7.1.3 Voice communication after receipt of AL-ACK . 17
7.1.4 Retransmission of MSD on request from PSAP . 18
7.1.5 Voice Communication after retransmission of MSD . 18
7.1.6 Clear-down / PSAP initiated network clear-down . 19
7.1.7 Clear-down / PSAP initiated application layer AL-ACK clear-down . 19
7.1.8 Call Back / PSAP initiated call back to IVS and re-send MSD . 20
7.1.9 PSAP correct handling of voice call in case of in-band modem resources busy or out of service . 20
7.1.10 MSD activation type indicator set to 'Automatic' . 21
7.1.11 MSD activation type indicator set to 'Manual' . 21
7.1.12 MSD call type indicator set to 'Test Call ' . 22
7.1.13 Mute IVS audio during MSD transmission and un-mute after application layer acknowledgement . 22
7.1.14 Mute PSAP audio during MSD request / MSD transfer and un-mute after application layer
acknowledgement . 23
7.1.15 Format of encoded and decoded MSD in accordance with CEN EN 15722 . 24
7.1.16 MSD transmission following NEC disabling tone with PSAP in Pull mode . 25
7.1.17 MSD transmission following NEC disabling tone with PSAP in Push mode . 25
7.2 Optional IVS test scenarios . 26
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4 ETSI TS 103 428 V1.1.1 (2016-06)
7.2.1 Auto redial following busy during call set-up . 26
7.2.2 Auto redial following no-answer during call set-up . 26
7.2.3 IVS configured for eCall 'only' service (restricted) . 27
7.3 Optional PSAP test scenarios . 27
7.3.1 Un-mute PSAP audio when Initiation Signal not received within 5 seconds (T4 expired) . 27
7.3.2 PSAP handling of more than 1 eCall simultaneously . 28
7.3.3 PSAP correct MSD additional data decoding . 28
7.4 Optional Performance test scenarios . 28
7.4.0 Introduction. 28
7.4.1 PSAP handling a number of parallel random eCalls from different IVS . 29
Annex A (normative): HLAP timers . 30
Annex B (informative): Bibliography . 31
History . 32

ETSI

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5 ETSI TS 103 428 V1.1.1 (2016-06)
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 (https://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 Technical Committee Mobile Standards Group (MSG).
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

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6 ETSI TS 103 428 V1.1.1 (2016-06)
1 Scope
The present document defines Interoperability Test Descriptions for the eCall High Level Application (HLAP) protocol.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ETSI TS 122 101: "Universal Mobile Telecommunications System (UMTS); LTE; Service
aspects; Service principles (3GPP TS 22.101)".
[2] ETSI TS 124 008: "Digital cellular telecommunications system (Phase 2+); Universal Mobile
Telecommunications System (UMTS); LTE; Mobile radio interface Layer 3 specification; Core
network protocols; Stage 3 (3GPP TS 24.0080)".
[3] CEN EN 15722:2015: "Road transport and traffic telematics - eSafety - eCall Minimum Set of
Data".
[4] CEN EN 16062:2015 : "Intelligent Transport Systems - eSafety - eCall High Level Application
Requirements (HLAP) Using GSM/UMTS Circuit Switched Networks".
[5] CEN EN 16072:2015: "Intelligent transport systems - eSafety - Pan European eCall - Operating
requirements".
[6] ETSI TS 134 123-1: "Universal Mobile Telecommunications System (UMTS); User Equipment
(UE) conformance specification; Part 1: Protocol conformance specification (3GPP TS 34.123-1)".
[7] ETSI TS 151 010-1: "Digital cellular telecommunications system (Phase 2+); Mobile Station (MS)
conformance specification; Part 1: Conformance specification (3GPP TS 51.010-1)".
[8] ETSI TS 122 003: "Digital cellular telecommunications system (Phase 2+); Universal Mobile
Telecommunications System (UMTS); LTE; Circuit Teleservices supported by a Public Land
Mobile Network (PLMN) (3GPP TS 22.003)".
[9] ETSI TS 102 936-1: "eCall Network Access Device (NAD) conformance specification; Part 1:
Protocol test specification".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
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7 ETSI TS 103 428 V1.1.1 (2016-06)
[i.1] ETSI ETR 266: "Methods for Testing and Specification (MTS); Test Purpose style guide".
[i.2] CEN EN 16062:2011: "Intelligent Transport Systems - eSafety - eCall - High Level Application
Requirements (HLAP)".
[i.3] ETSI EG 202 798 (V1.1.1): "Intelligent Transport Systems (ITS); Testing; Framework for
conformance and interoperability testing".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
base specification: specification of a protocol, telecommunication service, interface, abstract syntax, encoding rules, or
information object
eCall: manually or automatically initiated emergency call, (TS12) from a vehicle, supplemented with a minimum set of
emergency related data (MSD), as defined under the EU Commission's eSafety initiative
implementation: instance of the reference specification for which conformity to that reference specification is claimed
IVS configured for eCall only service (restricted): eCall capable IVS that is not subscribed to other non-emergency
services
NOTE: The IVS is not permitted to register on a PLMN except for the purpose of making an eCall, or a
test/reconfiguration call to a designated non-emergency number, in accordance with ETSI
TS 122 101 [1]. Following power-up the IVS may perform a PLMN search and maintain a list of
available networks upon which to register, when an eCall or test / reconfiguration call is activated.
Following an eCall or test / reconfiguration call, the IVS de-registers from the serving network within
12 hours.
IVS configured for eCall and other services (unrestricted): eCall capable IVS that has valid subscriptions to access
other non-emergency services
NOTE: The IVS may register on a PLMN at anytime and may remain registered on a serving network
indefinitely.
Minimum Set of Data (MSD): data component of an eCall sent from a vehicle to a Public Safety Answering Point or
other designated emergency call centre
NOTE: The MSD has a maximum size of 140 bytes and includes, for example, vehicle identity, location
information and time-stamp.
PSAP eCall Modem-server: PSAP equipment used to receive, validate and acknowledge the MSD sent from an IVS,
to manage the voice call transfer to the PSAP operator and to facilitate call-back to the vehicle
NOTE: The eCall modem-server may also support other functions.
PSAP Pull mode: mode in which the PSAP is configured to immediately transmit the SEND-MSD (START) message
without waiting for the INITIATION message send by the IVS
PSAP Push mode: mode in which the PSAP is configured to wait for the INITIATION message send by the IVS. After
reception of the INITIATION message the PSAP transmits the SEND-MSD (START) message
reference specification: standard which provides a base specification, or a set of base specifications, or a profile, or a
set of profiles, and for conformance to which the ICS proforma and test specifications are written
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3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
3GPP Third Generation Partnership Project
AL-ACK Application Layer Acknowledgement (also called HL-ACK)
CEN Comité Européen de Normalisation
CFG Configuration
CLI Calling Line Identity
CRC Cyclic Redundancy Check
ETSI European Telecommunications Standards Institute
EU European Union
EUT Equipment Under Test
GSM Global System of Mobile telecommunications
HLAP High Level Application Protocol
HMI Human Machine Interface
IE Information Element
IFS Interoperable Functions Statement
IFS_ID IFS Identifier
ISDN Integrated Services Digital Network
IVS In Vehicle System (eCall terminal and associated sub-systems in vehicle)
LL-ACK Link Layer ACK
MNO Mobile Network Operator
MSD Minimum Set of Data
NACK Negative Acknowledgement
NAD Network Access Device
NEC Network Echo Canceller
PLMN Public Land Mobile Network
PSAP Public Service Answering Point
SIP Session Initiation Protocol
TD Test Description
TS11 Telephony Speech Call
TS12 Emergency Call TeleService
UL Uplink
UMTS Universal Mobile Telecommunications System
4 Conventions
4.1 Interoperability test process
4.1.1 Principles
The goal of interoperability tests is to check that devices resulting from protocol implementations are able to work
together and provide the functionalities provided by the protocols. As necessary, one message may be checked during a
test, when a successful functional verification may result from an incorrect behaviour for instance. Detailed protocol
checks are part of the conformance testing process and are thus avoided during the Interoperability tests.
The test sessions will be mainly executed between 2 devices (IVS and PSAP eCall modem-server) from different
vendors.
In the present document, test description is provided to guide the test process during the test sessions.
4.1.2 The test description proforma
The test descriptions are provided in proforma tables following the format described in ETSI EG 202 798 [i.3] and
ETSI ETR 266 [i.1]. The following different test events are considered during the test execution:
• A stimulus corresponds to an event that enforces an EUT to proceed with a specific protocol action, like
sending a message for instance.
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9 ETSI TS 103 428 V1.1.1 (2016-06)
• A verify consists of verifying that the EUT behaves according to the expected behaviour (for instance the EUT
behaviour shows that it receives the expected message).
• A configure corresponds to an action to modify the EUT configuration.
• A check ensures the receipt of protocol messages on reference points, with valid content. This "check" event
type corresponds to the interoperability testing with conformance check method.
For the execution of the interoperability test sessions, the following conventions apply:
• Optional (check) tests should be performed using High Level Application Protocol (HLAP) monitor tools (see
clause 'Tooling' below) and may be skipped due to time restrictions.
4.1.3 Interoperable Functions Statement
The "Interoperable Functions Statement" (IFS) identifies the standardized functions of an EUT. These functions can be
mandatory, optional or conditional (depending on other functions), and depend on the role played by the EUT.
The IFS can also be used as a pro-forma by a vendor to identify the functions that its EUT will support when
interoperating with corresponding functions from other vendors.
Item column
The item column contains a number which identifies the item.
Item description column
The item description column describes in free text each respective item (e.g. parameters, timers, etc.). It implicitly
means "is supported by the implementation?".
IFS ID column
The IFS ID column defines an identifier for this particular IFS item. The IFS ID is in the Test Description field
"Applicability" to select/deselect the execution of a test.
Status column
The following notations are used for the status column:
m  mandatory - the capability is required to be supported.
o  optional - the capability may be supported or not.
n/a  not applicable - in the given context, it is impossible to use the capability.
x  prohibited (excluded) - there is a requirement not to use this capability in the given context.
o.i  qualified optional - for mutually exclusive or selectable options from a set. "i" is an integer which identifies
  an unique group of related optional items and the logic of their selection which is defined immediately
  following the table.
c.i  conditional - the requirement on the capability ("m", "o", "x" or "n/a") depends on the support of other
  optional or conditional items. "i" is an integer identifying an unique conditional status expression which is
  defined immediately following the table.
i  irrelevant (out-of-scope) - capability outside the scope of the reference specification. No answer is requested
  from the supplier.
NOTE: This use of "i" status is not to be confused with the suffix "i" to the "o" and "c" statuses above.
Support column
The support column shall be filled in by the supplier of the implementation using the following notations:
Y or y  supported by the implementation.
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10 ETSI TS 103 428 V1.1.1 (2016-06)
N or n not supported by the implementation.
N/A, n/a or - no answer required (allowed only if the status is n/a, directly or after evaluation of a conditional status).
4.2 Tooling
Message monitoring solutions, including audio recording and event logging, where supported, may be used to facilitate
the resolution of any interoperability and/or performance issues that may be encountered during interoperability testing.
4.3 Test Description naming convention
Table 1: TD naming convention
TD///
= root applicability MAN Mandatory tests
OPT Optional tests
PER Optional performance tests
= sequential number 01 to 99 Sequential numbers
= group IVS eCall terminal
PSAP PSAP eCall modem-server
 IVS or PSAP

4.4 Test Summary
Test scenario with a detailed test description, are provided in the present document to provide guidance to the
participants and to ensure consistent testing among the different test sessions and participants. The detailed test
descriptions are in the clause 7. It is recommended to conduct all test cases for all technologies supported by the IVS,
e.g. a dual mode GSM and UMTS IVS should conduct all tests with both technologies.
The test scenarios are split in 3 groups:
• The mandatory scenarios, which shall be executed during all test sessions, covering the mandatory features of
an eCall devices (IVS or PSAP).
• The optional test scenarios, which are provided to do additional testing according to the time left during the
test sessions. These scenarios are focusing either on IVS or PSAP features.
• An optional performance test scenario, similar to a real eCall service, dedicated to check some performance
issues from PSAP side. These scenarios are focusing on some performance check relating to repetitive or
parallel calls from different IVS or IVS simulator to the same PSAP.
The following test cases are foreseen to be executed during all interoperability test sessions, either with real IVS and
PSAP, but also with testing devices simulating an IVS or a PSAP.
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11 ETSI TS 103 428 V1.1.1 (2016-06)
Table 2: Mandatory Tests
Test case ID Summary
TD_MAN_01 MSD transmission / reception / acknowledgement with PSAP in Pull mode
TD_MAN_02 MSD transmission / reception / acknowledgement with PSAP in Push mode
TD_MAN_03 Voice communication after receipt of AL-ACK
TD_MAN_04 Retransmission of MSD on request from PSAP
TD_MAN_05 Voice communication after retransmission of MSD
TD_MAN_06 Clear-down / PSAP initiated network clear-down
TD_MAN_07 Clear-down / PSAP initiated application layer AL-ACK clear-down
TD_MAN_08 Call Back / PSAP initiated call back to IVS and re-send MSD
TD_MAN_09 PSAP correct handling of voice call in case of in-band modem resources busy
or out of service
TD_MAN_10 MSD activation type indicator set to 'Automatic'
TD_MAN_11 MSD activation type indicator set to 'Manual'
TD_MAN_12 MSD call type indicator set to 'Test Call'
TD_MAN_13 Mute IVS audio during MSD transmission and un-mute after application layer
acknowledgement
TD_MAN_14 Mute PSAP audio during MSD request / MSD transfer and un-mute after
application layer acknowledgement
TD_MAN_15 Format of encoded and decoded MSD in accordance with CEN EN 15722 [3]
TD_MAN_16 MSD transmission following NEC disabling tone with PSAP in Pull mode
TD_MAN_17 MSD transmission following NEC disabling tone with PSAP in Push mode

Table 3: Optional Tests
Test case ID Summary
TD_OPT_01_IVS Auto redial following busy during call set-up
TD_OPT_02_IVS Auto redial following no-answer during call set-up
TD_OPT_03_IVS IVS configured for eCall 'only' service (restricted)
TD_OPT_04_PSAP Un-mute PSAP audio when Initiation Signal not received within 5 seconds
(T4 expired)
TD_OPT_05_PSAP PSAP handling of more than 1 eCall simultaneously
TD_OPT_06_PSAP PSAP correct MSD additional data decoding
NOTE: Optional tests verify the behaviour of the IVS and PSAP individually and may be used to help
identify the cause of interoperability failures.

Table 4: Performance Tests
Test case ID Summary
TD_PER_01_PSAP PSAP handling a number of parallel random eCalls from different IVS
NOTE: These optional performance tests are intended to simulate a real situation and will
not be performed inside of a single test session between two vendors but on a
dedicated time schedules w
...