ETSI TS 102 869-3 V1.4.1 (2015-07)

Intelligent Transport Systems (ITS); Testing; Conformance test specifications for Decentralized Environmental Notification Basic Service (DEN); Part 3: Abstract Test Suite (ATS) and Protocol Implementation eXtra Information for Testing (PIXIT)

RTS/ITS-00159

General Information

• Status: Published
• Publication Date: 22-Jul-2015
• Technical Committee: ITS WG1 - Application Requirements and Services
• Current Stage: 12 - Completion
• Due Date: 18-Aug-2015
• Completion Date: 23-Jul-2015
• Mandate: M/453

Standards Content (Sample)

ETSI TS 102 869-3 V1.4.1 (2015-07)






TECHNICAL SPECIFICATION
Intelligent Transport Systems (ITS);
Testing;
Conformance test specifications for
Decentralized Environmental Notification
Basic Service (DEN);
Part 3: Abstract Test Suite (ATS) and
Protocol Implementation eXtra Information for Testing (PIXIT)

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2 ETSI TS 102 869-3 V1.4.1 (2015-07)



Reference
RTS/ITS-00159
Keywords
ATS, ITS, PIXIT, testing
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3 ETSI TS 102 869-3 V1.4.1 (2015-07)
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 . 7
3 Definitions and abbreviations . 7
3.1 Definitions . 7
3.2 Abbreviations . 7
4 Abstract Test Method (ATM) . 8
4.1 Abstract protocol tester . 8
4.2 Test Configuration . 8
4.3 Test architecture . 8
4.4 Ports and ASPs (Abstract Services Primitives) . 9
4.4.1 Introduction. 9
4.4.2 Primitives of the denmPort . 9
4.4.3 Primitives of the utPort . 10
5 Untestable Test Purposes. 10
6 ATS conventions . 10
6.1 Introduction . 10
6.2 Testing conventions . 10
6.2.1 Testing states . 10
6.2.1.1 Initial state . 10
6.2.1.2 Final state . 10
6.2.2 Message types - ASN.1 definitions . 10
6.3 Naming conventions . 11
6.3.1 General guidelines . 11
6.3.2 ITS specific TTCN-3 naming conventions . 12
6.3.3 Usage of Log statements . 13
6.3.4 Test Case (TC) identifier . 13
Annex A (normative): TTCN-3 library modules . 14
A.1 TTCN-3 files and other related modules . 14
Annex B (normative): Partial PIXIT pro forma for DEN . 15
B.1 Partial cancellation of copyright . 15
B.2 Introduction . 15
B.3 Identification summary. 15
B.4 ATS summary . 15
B.5 Test laboratory . 15
B.6 Client identification . 16
B.7 SUT . 16
B.8 Protocol layer information. 16
B.8.1 Protocol identification . 16
B.8.2 IUT information . 17
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4 ETSI TS 102 869-3 V1.4.1 (2015-07)
Annex C (normative): PCTR pro forma for DEN . 18
C.1 Partial cancellation of copyright . 18
C.2 Introduction . 18
C.3 Identification summary. 18
C.3.1 Protocol conformance test report . 18
C.3.2 IUT identification . 18
C.3.3 Testing environment . 18
C.3.4 Limits and reservation . 19
C.3.5 Comments. 19
C.4 IUT Conformance status . 19
C.5 Static conformance summary . 19
C.6 Dynamic conformance summary . 20
C.7 Static conformance review report . 20
C.8 Test campaign report . 21
C.9 Observations . 22
History . 23

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5 ETSI TS 102 869-3 V1.4.1 (2015-07)
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 Technical Committee Intelligent Transport Systems
(ITS).
The present document is part 3 of a multi-part deliverable covering Conformance test specification for Decentralized
Environmental Notification Basic Service (DEN) as identified below:
Part 1: "Test requirements and Protocol Implementation Conformance Statement (PICS) pro forma";
Part 2: "Test Suite Structure and Test Purposes (TSS & TP)";
Part 3: "Abstract Test Suite (ATS) and Protocol Implementation eXtra Information for Testing (PIXIT)".
The development of ITS test specifications follows the guidance provided in the ETSI EG 202 798 [i.1]. Therefore, the
ATS documentation outlined in the present document is also based on the guidance provided in ETSI EG 202 798 [i.1].
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 102 869-3 V1.4.1 (2015-07)
1 Scope
The present document contains the Abstract Test Suite (ATS) for Decentralized Environmental Notification Basic
Service (DEN) as defined in ETSI EN 302 637-3 [1] in compliance with the relevant requirements and in accordance
with the relevant guidance given in ISO/IEC 9646-7 [5].
The objective of the present document is to provide a basis for conformance tests for Decentralized Environmental
Notification Basic Service (DEN) equipment giving a high probability of interoperability between different
manufacturers' equipment.
The ISO standard for the methodology of conformance testing (ISO/IEC 9646-1 [2] and ISO/IEC 9646-2 [3]) as well as
the ETSI rules for conformance testing (ETSI ETS 300 406 [6]) are used as a basis for the test methodology.
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
reference 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 EN 302 637-3 (V1.2.2): "Intelligent Transport Systems (ITS); Vehicular Communications;
Basic Set of Applications; Part 3: Specifications of Decentralized Environmental Notification
Basic Service".
[2] ISO/IEC 9646-1 (1994): "Information technology -- Open Systems Interconnection --
Conformance testing methodology and framework -- Part 1: General concepts".
[3] ISO/IEC 9646-2 (1994): "Information technology -- Open Systems Interconnection --
Conformance testing methodology and framework -- Part 2: Abstract Test Suite specification".
[4] ISO/IEC 9646-6 (1994): "Information technology -- Open Systems Interconnection --
Conformance testing methodology and framework -- Part 6: Protocol profile test specification".
[5] ISO/IEC 9646-7 (1995): "Information technology -- Open Systems Interconnection --
Conformance testing methodology and framework -- Part 7: Implementation Conformance
Statements".
[6] ETSI ETS 300 406 (1995): "Methods for testing and Specification (MTS); Protocol and profile
conformance testing specifications; Standardization methodology".
[7] ETSI ES 201 873-1 (V4.5.1): "Methods for Testing and Specification (MTS); The Testing and
Test Control Notation version 3; Part 1: TTCN-3 Core Language".
[8] ETSI ES 201 873-7 (V4.5.1): "Methods for Testing and Specification (MTS); The Testing and
Test Control Notation version 3; Part 7: Using ASN.1 with TTCN-3".
[9] ETSI TS 102 869-1 (V1.4.1): "Intelligent Transport Systems (ITS); Testing; Conformance test
specifications for Decentralized Environmental Notification Messages (DENM); Part 1: Test
requirements and Protocol Implementation Conformance Statement (PICS) pro forma".
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7 ETSI TS 102 869-3 V1.4.1 (2015-07)
[10] ETSI TS 102 894-2 (V1.2.1): "Intelligent Transport Systems (ITS); Users and applications
requirements; Part 2: Applications and facilities layer common data dictionary".
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
reference 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.
[i.1] 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 terms and definitions given in ETSI EN 302 637-3 [1],
ISO/IEC 9646-1 [2] and ISO/IEC 9646-7 [5] apply.
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ASN.1 Abstract Syntax Notation One
ATM Abstract Test Method
ATS Abstract Test Suite
BO Inopportune test events for Behaviour tests
BV valid test events for Behaviour tests
CAN Controller Area Network
DEN Decentralized Environmental Notification Basic Service
DENM Decentralized Environmental Notification Message
DRCX DENM Reception
EG ETSI Guide
EN European Norm
ES ETSI Standard
EUPD Event Update
EVGN Event Generation
EXTI Expiration Time
ISO International Organization for Standardization
ITS Intelligent Transportation Systems
IUT Implementation Under Test
LDM Local Dynamic Map
MSGF Message Format
MTC Main Test Component
PCTR Protocol conformance Test Report
PETY Periodicity
PICS Protocol Implementation Conformance Statement
PIXIT Partial Protocol Implementation Extra Information for Testing
SA System Adaptor
SAP Service Access Point
SCS System Conformance Statement
SCTR Static conformance Test Report
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8 ETSI TS 102 869-3 V1.4.1 (2015-07)
SLCI Specific Location Container Information
SSCI Specific Situation Container Information
SUT System Under Test
TC Test Case
TDEV Two different events
TI Timer tests
TNEV Termination/Negation of an Event
TP Test Purposes
TS Technical Specification
TSS Test Suite Structure
TTCN Testing and Test Control Notation
4 Abstract Test Method (ATM)
4.1 Abstract protocol tester
The abstract protocol tester used by this test suite is described in figure 1. The test system simulates valid and invalid
protocol behaviour, and analyses the reaction of the IUT.
Test Syste m SUT
Upper Tester

DENM

PDUs

IUT

BTP BTP

GeoN
GeoN
ITS -G5 ITS- G5


Lower tester



Figure 1: Abstract protocol tester - DEN
4.2 Test Configuration
This test suite uses a unique test configuration in order to cover the different test scenarios. In this configuration, the
tester simulates one ITS station implementing the DEN protocol.
4.3 Test architecture
The present document implements the general TTCN-3 test architecture described in ETSI EG 202 798 [i.1],
clauses 6.3.2 and 8.3.1.
Figure 2 shows the test architecture used in for the DEN ATS. The DEN test component requires using only the Main
Test Component (MTC). The MTC communicates with the DEN SUT over the denmPort. The denmPort is used to
exchange DEN protocol messages between the DEN test component and the DEN IUT.
The Upper tester entity in the SUT enables triggering DEN functionalities by simulating primitives from application or
LDM entities. It is required to trigger the DEN layer in the SUT to send DEN messages, which are resulting from upper
layer primitives. Furthermore, receiving DEN messages may result for the DEN layer in sending primitives to the upper
layer (sending Data to LDM, for instance).
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Adpt_Ctlr
control port
UTport
control port
 9 ETSI TS 102 869-3 V1.4.1 (2015-07)
ITS TTCN-3 test execution
ItsMtc
(Sync
component)


ItsNt (PTCs)
NT2
geoNetworking
Port

NT
CODECS
ITS Test Adaptor

Upper tester
ITS lower layers stack
External
transport
functions
System adaptor
Platform adaptor
(SA)
(PA)
SUT SUT
Group of TTCN-3 ports
TTCN-3 ports TTCN-3 external functions


Figure 2: Test system architecture
4.4 Ports and ASPs (Abstract Services Primitives)
4.4.1 Introduction
Two ports are used by the DEN ATS:
• The denmPort, of type DenmPort.
• The utPort of type UpperTesterPort.
4.4.2 Primitives of the denmPort
Two types of primitives are used in the denmPort:
• The DenmInd primitive, containing the received messages of type DenmPdu, and a timestamp corresponding
to the receipt time.
• The DenmReq primitive containing the sent messages of type DenmPdu.
The DenmPdu type is declared in the DENM.asn ASN.1 module, following the ASN.1 definition from
ETSI EN 302 637-3 [1].
DenmPdu ::= SEQUENCE {
header ItsPduHeader,
denm DecentralizedEnvironmentalNotificationMessage
}
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4.4.3 Primitives of the utPort
This port uses two types of primitives:
• The UtInitialize primitive used to initialize IUT.
• The UtTrigger primitive used trigger upper layer events in IUT.
5 Untestable Test Purposes
Table 1 gives a list of TPs, which are not implemented in the ATS due to the chosen ATM or other restrictions.
Table 1: Untestable TP
Test purpose Reason
TP/DEN/EVGN/BV-08 In order to achieve the situation of sequenceNumber wrap-around, 65 535
DENMs would need to be generated. With 10 DENMs sent per second, the test
would need an execution time of 1,8 hours
TP/DEN/MSRV/BO-08 NOT implemented - No security elements in the ATS
TP/DEN/MSRV/BO-09 NOT implemented - No security elements in the ATS

6 ATS conventions
6.1 Introduction
The ATS conventions are intended to give a better understanding of the ATS but they also describe the conventions
made for the development of the ATS. These conventions shall be considered during any later maintenance or further
development of the ATS.
The ATS conventions contain two clauses, the testing conventions and the naming conventions. The testing conventions
describe the functional structure of the ATS. The naming conventions describe the structure of the naming of all ATS
elements.
To define the ATS, the guidelines of the document ETSI ETS 300 406 [6] were considered.
6.2 Testing conventions
6.2.1 Testing states
6.2.1.1 Initial state
All test cases start with the function f_prInitialState. This function brings the IUT in an "initialized" state by invoking
the upper tester primitive UtInitialize.
6.2.1.2 Final state
All test cases end with the function f_poDefault. This function brings the IUT back in an "idle" state. As no specific
actions are required for the idle state in ETSI EN 302 637-3 [1], the function f_ poDefault does not invoke any action.
As necessary, further actions may be included in the f_poDefault function.
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11 ETSI TS 102 869-3 V1.4.1 (2015-07)
6.2.2 Message types - ASN.1 definitions
ASN.1 definitions from ETSI EN 302 637-3 [1] are directly imported in TTCN-3 using the ASN.1 import method
specified in ETSI ES 201 873-7 [8].
The following example shows the TTCN-3 import statement used to import ASN.1 definitions in the TTCN-3 modules:
import from DENM_PDU_Descriptions language "ASN.1:1997" all;

Generic ASN.1 definitions (message header, station Id, etc.), are defined in the Common Data Dictionary
ETSI TS 102 894-2 [10] ASN.1 module. Thus the DEN ASN.1 modules need to import these definitions from the
Common Data Dictionary ETSI TS 102 894-2 [10] ASN.1 module (see the following ASN.1 import statement extracted
from the DEN ASN.1 module):
IMPORTS
  ItsPduHeader, StationID, .
FROM ITS-Container {
itu-t(0) identified-organization(4) etsi(0) itsDomain(5) wg1(1) ts(102894) cdd(2) version(1)
};
6.3 Naming conventions
6.3.1 General guidelines
The naming convention is based on the following underlying principles:
• in most cases, identifiers should be prefixed with a short alphabetic string (specified in table 2) indicating the
type of TTCN-3 element it represents;
• suffixes should not be used except in those specific cases identified in table 2;
• prefixes and suffixes should be separated from the body of the identifier with an underscore ("_");
EXAMPLE 1: c_sixteen, t_wait.
• only module names, data type names and module parameters should begin with an upper-case letter. All other
names (i.e. the part of the identifier following the prefix) should begin with a lower-case letter;
• the start of second and subsequent words in an identifier should be indicated by capitalizing the first character.
Underscores should not be used for this purpose.
EXAMPLE 2: f_initialState.
Table 2 specifies the naming guidelines for each element of the TTCN-3 language indicating the recommended prefix,
suffixes (if any) and capitalization.
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12 ETSI TS 102 869-3 V1.4.1 (2015-07)
Table 2: ETSI TTCN-3 generic naming conventions
Language element Naming convention Prefix Example identifier
Module Use upper-case initial letter none IPv6Templates
Group within a module Use lower-case initial letter none messageGroup
Data type Use upper-case initial letter none SetupContents
Message template Use lower-case initial letter m_ m_setupInit
Message template with wildcard or matching Use lower-case initial letters mw_ mw_anyUserReply
expression
Signature template Use lower-case initial letter s_ s_callSignature
Port instance Use lower-case initial letter none signallingPort
Test component instance Use lower-case initial letter none userTerminal
Constant Use lower-case initial letter c_ c_maxRetransmission
Constant (defined within component type) Use lower-case initial letter cc_ cc_minDuration
External constant Use lower-case initial letter cx_ cx_macId
Function Use lower-case initial letter f_ f_authentication()
External function Use lower-case initial letter fx_ fx_calculateLength()
Altstep (incl. Default) Use lower-case initial letter a_ a_receiveSetup()
Test case Use ETSI numbering TC_ TC_COR_0009_47_ND
Variable (local) Use lower-case initial letter v_ v_macId
Variable (defined within a component type) Use lower-case initial letters vc_ vc_systemName
Timer (local) Use lower-case initial letter t_ t_wait
Timer (defined within a component) Use lower-case initial letters tc_ tc_authMin
Module parameters for PICS Use all upper case letters PICS_ PICS_DOOROPEN
Module parameters for other parameters Use all upper case letters PX_ PX_TESTER_STATION_ID
Formal Parameters Use lower-case initial letter p_ p_macId
Enumerated Values Use lower-case initial letter e_ e_syncOk

6.3.2 ITS specific TTCN-3 naming conventions
Next to such general naming conventions, table 3 shows specific naming conventions that apply to the ITS TTCN-3 test
suite.
Table 3: ITS specific TTCN-3 naming conventions
Language element Naming convention Prefix Example identifier
ITS Module Use upper-case initial Its"IUTname"_ ItsDenm_
letter
Module containing types Use upper-case initial Its"IUTname"_TypesAndValues ItsDenm_TypesAndValues
and values letter
Module containing Use upper-case initial Its"IUTname"_Templates ItsDenm _Templates
Templates letter
Module containing test Use upper-case initial Its"IUTname"_TestCases ItsDenm _TestCases
cases letter
Module containing Use upper-case initial Its"IUTname"_Functions ItsDenm _Functions
functions letter
Module containing external Use upper-case initial Its"IUTname"_ExternalFunctions ItsDenm_ExternalFunctions
functions letter
Module containing Use upper-case initial Its"IUTname"_Interface ItsDenm _Interface
comp
...