ETSI TS 102 486-1-2 V1.2.1 (2008-10)

Intelligent Transport Systems (ITS); Road Transport and Traffic Telematics (RTTT); Test specifications for Dedicated Short Range Communication (DSRC) transmission equipment; Part 1: DSRC data link layer: medium access and logical link control; Sub-Part 2: Test Suite Structure and Test Purposes (TSS&TP)

RTS/ITS-0040006

General Information

• Status: Published
• Publication Date: 05-Oct-2008
• Technical Committee: ITS WG4 - Media and Medium related
• Current Stage: 12 - Completion
• Due Date: 27-Aug-2008
• Completion Date: 06-Oct-2008
• Mandate: M/270
• Mandate: M/338

Standards Content (Sample)

ETSI TS 102 486-1-2 V1.2.1 (2008-10)
Technical Specification

Intelligent Transport Systems (ITS);
Road Transport and Traffic Telematics (RTTT);
Test specifications for Dedicated Short
Range Communication (DSRC) transmission equipment;
Part 1: DSRC data link layer:
medium access and logical link control;
Sub-Part 2: Test Suite Structure and Test Purposes (TSS&TP)

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2 ETSI TS 102 486-1-2 V1.2.1 (2008-10)



Reference
RTS/ITS-0040006
Keywords
ITS, DSRC, DLC, MAC, LLC,protocol, radio,
testing, TSS&TP
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3 ETSI TS 102 486-1-2 V1.2.1 (2008-10)
Contents
Intellectual Property Rights . 4
Foreword . 4
1 Scope . 5
2 References . 5
2.1 Normative references . 5
2.2 Informative references . 6
3 Definitions and abbreviations . 6
3.1 Definitions . 6
3.2 Abbreviations . 6
4 Test Suite Structure (TSS) . 6
4.1 Structure . 6
4.2 Test groups . 7
4.3 Type of SUT test groups . 7
4.4 Behaviour test groups . 7
4.4.1 Valid Behaviour (BV) tests . 7
4.4.2 Invalid Behaviour (BI) tests . 7
5 Test Purposes (TP) . 7
5.1 Introduction . 7
5.1.1 TP definition conventions . 7
5.1.2 TP naming conventions . 8
5.1.3 Sources of TP definitions . 8
5.2 MAC test purposes for On-Board Unit . 8
5.2.1 BV test purposes . 8
5.2.2 BI test purposes . 11
5.3 MAC test purposes for Road-Side Unit . 18
5.3.1 BV test purposes . 18
5.3.2 BI test purposes . 20
5.4 LLC test purposes for On-Board Unit . 26
5.4.1 BV test purposes . 26
5.4.2 BI test purposes . 27
5.5 LLC test purposes for Road-Side Unit . 29
5.5.1 BV test purposes . 29
5.5.2 BI test purposes . 31
Annex A (informative): Test coverage matrix . 33
A.1 Introduction . 33
A.2 OBU test coverage matrix . 33
A.3 RSU test coverage matrix . 39
History . 45

ETSI

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4 ETSI TS 102 486-1-2 V1.2.1 (2008-10)
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://webapp.etsi.org/IPR/home.asp).
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 System(ITS).
The present document is part 1, sub-part 2 of a multi-part deliverable covering Intelligent Transport Systems (ITS);
Road Transport and Traffic Telematics (RTTT); Test specifications for Dedicated ShortRange Communication (DSRC)
transmission equipment as identified below:
Part 1: "DSRC data link layer: medium access and logical link control;
Sub-part 1: "Protocol Implementation Conformance Statement (PICS) proforma specification";
Sub-part 2: "Test Suite Structure and Test Purposes (TSS&TP)";
Sub-part 3: "Abstract Test Suite (ATS) and partial PIXIT proforma".
Part 2: "DSRC application layer".
ETSI

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5 ETSI TS 102 486-1-2 V1.2.1 (2008-10)
1 Scope
The present document contains the Test Suite Structure (TSS) and Test Purposes (TP) to test the Dedicated Short Range
Communication (DSRC); Data Link Control (DLC) layer.
The objective of this test specification is to provide a basis for conformance tests for DSRC equipment giving a high
probability of inter-operability between different manufacturer's equipment.
The ISO standard for the methodology of conformance testing (ISO/IEC 9646-1 [5] and ISO/IEC 9646-2 [6]) as well as
the ETSI rules for conformance testing (ETS 300 406 [4]) are used as a basis for the test methodology.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• Non-specific reference may be made only to a complete document or a part thereof and only in the following
cases:
- if it is accepted that it will be possible to use all future changes of the referenced document for the
purposes of the referring document;
- for informative references.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
For online referenced documents, information sufficient to identify and locate the source shall be provided. Preferably,
the primary source of the referenced document should be cited, in order to ensure traceability. Furthermore, the
reference should, as far as possible, remain valid for the expected life of the document. The reference shall include the
method of access to the referenced document and the full network address, with the same punctuation and use of upper
case and lower case letters.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are indispensable for the application of the present document. For dated
references, only the edition cited applies. For non-specific references, the latest edition of the referenced document
(including any amendments) applies.
[1] CEN EN 12795 (2003): "Road transport and traffic telematics - Dedicated Short Range
Communication (DSRC) - DSRC data link layer: medium access and logical link control".
[2] CEN EN 12253 (2003): "Road transport and traffic telematics - Dedicated short-range
communication - Physical layer using microwave at 5,8 GHz".
[3] CEN EN 13372 (2003): "Road transport and traffic telematics (RTTT) - Dedicated short-range
communication - Profiles for RTTT".
[4] ETSI ETS 300 406: "Methods for Testing and Specification (MTS); Protocol and profile
conformance testing specifications; Standardization methodology".
[5] ISO/IEC 9646-1 (1991): "Information technology - Open Systems Interconnection - Conformance
testing methodology and framework - Part 1: General concepts".
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6 ETSI TS 102 486-1-2 V1.2.1 (2008-10)
[6] ISO/IEC 9646-2 (1991): "Information technology - Open Systems Interconnection - Conformance
testing methodology and framework - Part 2: Abstract Test Suite specification".
[7] ISO/IEC 9646-6 (1991): "Information technology - Open Systems Interconnection - Conformance
testing methodology and framework - Part 6: Protocol profile test specification".
[8] ISO/IEC 9646-7 (1991): "Information technology - Open Systems Interconnection - Conformance
testing methodology and framework - Part 7: Implementation Conformance Statement".
2.2 Informative references
The following referenced documents are not essential to the use of the present document but they assist the user with
regard to a particular subject area. For non-specific references, the latest version of the referenced document (including
any amendments) applies.
[i.1] ETSI TS 102 178: "Broadband Radio Access Networks (BRAN); HiperMAN; Data Link Control
(DLC) layer".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in ISO/IEC 9646-7 [8], EN 12253 [2],
EN 12795 [1] and EN 13372 [3] and the following apply:
blocked signal: signal without clock and bit information, e.g. a very weak signal
3.2 Abbreviations
For the purposes of the present document, the abbreviations given in ISO/IEC 9646-1 [5], ISO/IEC 9646-6 [7],
ISO/IEC 9646-7 [8], TS 102 178 [i.1] and EN 12795 [1] and the following apply:
DLC Data Link Control
PrWA MAC frame Private Window Allocation
PrWRq MAC frame Private Window Request
U8 Uplink bit rate
U13a Uplink preamble length (duration)
TSS Test Suite Structure
4 Test Suite Structure (TSS)
4.1 Structure
Figure 1 shows the DLC Test Suite Structure (TSS) including its subgroups defined for the conformance testing.
Group Type of SUT Behaviour
Valid behaviour
On Board Unit
Invalid behaviour
DLC MAC Sub layer
Valid behaviour
Road Side Unit
Invalid behaviour
Valid behaviour
On Board Unit
Invalid behaviour
DLC LLC Sub layer
Valid behaviour
Road Side Unit
Invalid behaviour

Figure 1: TSS for DSRC DLC
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7 ETSI TS 102 486-1-2 V1.2.1 (2008-10)
4.2 Test groups
The test groups are organized in two groups. The first is designed for the DLC MAC sub layer testing and the second is
designed for DLC LLC sub layer testing.
4.3 Type of SUT test groups
The type of SUT test groups are organized in two groups. The first is designed for the On Board Unit testing and the
second is designed for Road Side Unit testing.
4.4 Behaviour test groups
4.4.1 Valid Behaviour (BV) tests
This test sub group shall verify that the IUT reacts in conformity with the EN, after receipt or exchange of a valid
Protocol Data Units (PDUs). Valid PDUs means that the exchange of messages and the content of the exchanged
messages are considered as valid.
4.4.2 Invalid Behaviour (BI) tests
This test sub group shall verify that the IUT reacts in conformity with the EN, after receipt of a syntactically
invalid PDU.
5 Test Purposes (TP)
5.1 Introduction
5.1.1 TP definition conventions
The TPs are defined following particular rules as shown in table 1.
Table 1: TP definition rules
TP Id according to the TP Title
naming conventions
Reference
PICS Selection
TC Reference
Initial condition
Stimulus and Expected behaviour

TP Id The TP Id is a unique identifier. It shall be specified according to the TP naming
conventions defined in the sub-clause below.
Title Short description of test purpose objective.
Reference The reference should contain the references of the subject to be validated by the actual
TP (specification reference, clause, paragraph).
PICS Selection Reference to the PICS statement involved for selection of the TP. Contains a Boolean
expression. Only those PICS statements are shown that are explicitly related to the test.
TC reference
Shows the reference number of the related Test Case in the ATS.
Initial condition The condition defines in which initial state the IUT has to be to apply the actual TP.
Stimulus and Expected Definition of the events the tester performs, and the events that are expected from the
behaviour
IUT to conform to the base specification.

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8 ETSI TS 102 486-1-2 V1.2.1 (2008-10)
5.1.2 TP naming conventions
The identifier of the TP is built according to table 2.
Table 2: TP naming convention
Identifier: TP///-
MAC MAC sub-layer
LLC LLC sub-layer
= type of SUT OBU On Board Unit
RSU Road Side Unit
x = Type of testing BV Valid Behaviour Tests
BI Invalid Behaviour Tests
= sequential number (01-99) Test Purpose Number

5.1.3 Sources of TP definitions
All TPs are specified according to EN 12795 [1] and EN 13372 [3] with side-information from EN 12253 [2].
5.2 MAC test purposes for On-Board Unit
5.2.1 BV test purposes
Test subgroup objective:
- to test the behaviour of the IUT in relation to syntactically and contextual correct behaviour of the test system.
Test purposes:
TP/MAC/OBU/BV/01 Verify that the OBU can receive downlink frames of maximum allowed length as
defined by N2
Reference: EN 12795 [1], clauses 7.3.3, 7.4.3.1.1 d) and annex A
PICS Selection: Table A.2/2 AND Table A.5/4 AND Table A.6/7
TC reference: TC_MAC_OBU_BV_01
Initial condition: OBU not in sleep mode and not yet initialized
Stimulus and Expected Behaviour:
1. Tester sends downlink frame containing BST, allocating N5 public uplink
windows. The number of profiles in the profilelist shall be such, that the number
of octets in the frame equals the maximum number as defined by N2.
2. Verify IUT does send a PrWRq within one of the public uplink windows
allocated.

TP/MAC/OBU/BV/02 Verify that the OBU can receive a downlink frame following immediately within T1
after the end of an uplink frame transmitted by the same OBU
Reference: EN 12795 [1], clause 7.3.3 and annex A
PICS Selection: Table A.2/2 AND Table A.5/4 AND Table A.6/1
TC reference: TC_MAC_OBU_BV_02
Initial condition: OBU not in sleep mode and not yet initialized
Stimulus and Expected Behaviour:
1. Tester sends downlink frame containing BST, allocating N5 public uplink
windows.
2. Verify IUT sends a PrWRq in any of the public uplink windows allocated.
3. Tester sends PrWA.
4. Verify IUT sends a VST within the private uplink window allocated.
5. Tester sends ACn command, e.g. DLL ECHO or EFC ECHO, such, that the
preamble of the ACn command frame starts exactly T1 after the end of the last
bit of the end flag of the VST frame.
6. Verify IUT sends the ACn response.

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9 ETSI TS 102 486-1-2 V1.2.1 (2008-10)
TP/MAC/OBU/BV/03 Verify that the OBU implements the timing constraints T3, T4b and T5 for public
uplink windows
Reference: EN 12795 [1], clause 7.3.4.2 and annex A
PICS Selection: Table A.2/2 AND Table A.6/3 AND Table A.6/5 AND Table A.6/6
TC reference: TC_MAC_OBU_BV_03
Initial condition: OBU not in sleep mode and not yet initialized
Stimulus and Expected Behaviour:
1. Tester sends downlink frame containing BST, allocating N5 public uplink
windows.
2. Verify IUT sends a PrWRq in one of the public uplink windows allocated.
3. Tester records time:
• Ts from the end of last bit of the end flag of the BST frame until the
beginning of the preamble of the PrWRq frame, and time.
• Te from the end of last bit of the end flag of the BST frame until the end
of the last bit of the end flag of the PrWRq frame.
4. Verify IUT behaves according to table 3.
5. Repeat the previous steps until the IUT has selected each of the N5 public
uplink windows at least once.

Table 3: Timing for public uplink window
Public uplink Start time Ts End time Te
window number
1 T3 < Ts < T3 + T4b Te < T3 + T5
2 T3 + T5 < Ts < T3 + T5 +T4b Te < T3 + 2·T5
…
N5
T3 + ((N5-1)·T5) < Ts < T3 + ((N5-1)·T5) +T4b Te < T3 + N5·T5

TP/MAC/OBU/BV/04 Verify that the OBU can receive a downlink frame which follows another downlink
frame immediately within T2
Reference: EN 12795 [1], clause 7.3.3 and annex A
PICS Selection: Table A.2/2 AND Table A.5/4 AND Table A.6/2
TC reference: TC_MAC_OBU_BV_04
Initial condition: OBU being not initialized and not in sleep mode
Stimulus and Expected Behaviour:
1. Tester sends a frame with a private LID, not allocating a frame.
2. Within T2, the tester sends downlink frame containing BST, allocating N5 public
uplink windows.
3. Verify IUT sends a PrWRq in one of the public uplink windows allocated.

TP/MAC/OBU/BV/05 Verify that the OBU implements the timing constraints T3 and T4a and N3 for
private uplink windows
Reference: EN 12795 [1], clause 7.3.4.1 and annex A
EN 12253 [2], clause 5.3
PICS Selection: Table A.2/2 AND Table A.5/2 AND Table A.6/3 AND Table A.6/4
AND Table A.6/8
TC reference: TC_MAC_OBU_BV_05
Initial condition: OBU not in sleep mode and not yet initialized
Stimulus and Expected Behaviour:
1. Tester performs an initialization cycle BST / PrWRq / PrWA / VST.
2. Tester records time:
•  Ts from the end of the last bit of the end flag of the PrWA frame allocating
a private uplink window until the beginning of the preamble of the VST
frame in the allocated private uplink window, and time.
•  Te from the end of the last bit of the end flag of the PrWA frame allocating
a private uplink window until the end of the last bit of the end flag of the
VST frame in the allocated private uplink window.
3. Verify IUT behaves according to table 4.

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10 ETSI TS 102 486-1-2 V1.2.1 (2008-10)
Table 4: Timing for private uplink window
Start time Ts End time Te
T3 < Ts < T3 + T4a Te < T3 + T4a + U13a +(8·N3 + stuff bits)/ U8

TP/MAC/OBU/BV/06 Verify that the OBU correctly manages the S-bit and L-Bit in the MAC control field
for the purpose of possible re-transmission of VST frames
Reference: EN 12795 [1], clauses 7.3.2.1, 7.4.3.1.3 and 7.4.3.1.4
PICS Selection: Table A.2/2 AND Table A.4/6 AND Table A.7/2 AND Table A.7/3
TC reference: TC_MAC_OBU_BV_06
Initial condition: OBU not in sleep mode and not yet initialized
Stimulus and Expected Behaviour:
1. Tester sends downlink frame containing BST, allocating N5 public uplink
windows.
2. Verify IUT sends a PrWRq in one of the public uplink windows allocated.
3. Tester sends PrWA and records the value of the S-bit used.
4. Tester ignores a possible reception of a VST in the allocated private uplink
window.
5. Tester sends PrWA with the S-bit set to the same value as in step 3.
6. Verify IUT sends the VST.

TP/MAC/OBU/BV/07 Verify that the OBU correctly manages the local S-bit state variable based on the S-
bit and L-Bit in the received MAC control field, where an LPDU is present in the
allocating downlink frame.
Reference: EN 12795 [1], clauses 7.3.2.1, 7.4.3.1.3 and 7.4.3.1.4
PICS Selection: Table A.2/2 AND Table A.4/6 AND Table A.7/2 AND Table A.7/3
AND Table A.7/4
TC reference: TC_MAC_OBU_BV_07
Initial condition: OBU being fully initialized and not in sleep mode.
Stimulus and Expected Behaviour:
1. Tester sends the EFC ECHO ACn command with ECHO_DATA1 and notes the
value of the S-bit.
2. Verify IUT sends the EFC ECHO response with ECHO_DATA1.
3. Tester sends the EFC ECHO ACn command with ECHO_DATA2. The S-bit
shall be set to the same value as used in step 1.
4. Verify IUT sends the EFC ECHO response with ECHO_DATA2.
5. Tester sends PrWA with the S-bit set to the same value as in step 3.
6. Verify IUT sends the EFC ECHO response with ECHO_DATA2.

TP/MAC/OBU/BV/08 Verify that the OBU randomly selects one of the N5 public uplink windows.
Reference: EN 12795 [1], clause 7.3.4.3
PICS Selection: Table A.2/2 AND Table A.5/1
TC reference: TC_MAC_OBU_BV_08
Initial condition: OBU not in sleep mode and not yet initialized
Stimulus and Expected Behaviour:
1. Tester sends downlink frame containing BST, allocating N5 = three public uplink
windows.
2. Verify IUT sends a PrWRq within one of the public uplink windows allocated.
3. Tester records number of public uplink window selected.
4. Tester repeats steps 1. to 3. X times with X = 100.
5. Verify IUT selects all possible public uplink windows at least 0,3·X times.
NOTE: In case the test fails, increase value of X and repeat test.

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11 ETSI TS 102 486-1-2 V1.2.1 (2008-10)
TP/MAC/OBU/BV/09 Verify that the OBU can detect and manage both valid values of the C/R-bit in the
MAC control field of a PrWa frame
Reference: EN 12795 [1], clauses 7.3.2.1 and 7.4.3.1.1 c)
PICS Selection: Table A.2/2 AND Table A.4/6
Note: Test does not apply for profiles 0/1 of EN 13372 [3]
TC reference: TC_MAC_OBU_BV_09
Initial condition: OBU not in sleep mode and not yet initialized
Stimulus and Expected Behaviour:
1. Tester sends downlink frame containing BST, allocating N5 public uplink
windows.
2. Verify IUT sends PrWRq in the allocated private uplink window.
3. Tester sends PrWA frame with the C/R-bit of the MAC control field set to 1.
4. Verify IUT sends VST in the allocated private uplink window.
5. Tester sends PrWA frame with the C/R-bit of the MAC control field set to 0. The
S-bit shall have the same value as in step 3.
6. Verify IUT sends VST in the allocated private uplink window.

5.2.2 BI test purposes
Test subgroup objective:
- to check the behaviour of the of the IUT in response to invalid messages and behaviour from the test tool.
Test purposes:
TP/MAC/OBU/BI/01 Verify that the OBU can detect and manage double-bit errors in the LID field, MAC
control field and LPDU field of the downlink frame using the FCS field
Reference: EN 12795 [1], clauses 5.5 and 7.4.3.1.1 e)
PICS Selection: Table A.2/2 AND Table A.4/8 AND Table A.7/1 AND Table A.7/6
TC reference: TC_MAC_OBU_BI_01
Initial condition: OBU not in sleep mode and not yet initialized
Stimulus and Expected Behaviour:
1. Tester sends downlink frame containing BST, allocating N5 public uplink
windows, but introduces a random double-bit error in the frame on transmission.
The bit error shall be introduced between the end of the start flag and the start
of the FCS field.
2. Verify IUT does not respond within any of the public uplink windows allocated.
3. Repeat test in case the errors produced a flag or an abort sequence.

TP/MAC/OBU/BI/02 Verify that the OBU can detect and manage double-bit errors in the FCS field of the
downlink frame using the FCS field
Reference: EN 12795 [1], clauses 5.5 and 7.4.3.1.1 e)
PICS Selection: Table A.2/2 AND Table A.4/8 AND Table A.7/1 AND Table A.7/6
TC reference: TC_MAC_OBU_BI_02
Initial condition: OBU not in sleep mode and not yet initialized
Stimulus and Expected Behaviour:
1. Tester sends downlink frame containing BST, allocating N5 public uplink
windows, but introduces a random double-bit error in the FCS field on
transmission.
2. Verify IUT does not respond within any of the public uplink windows allocated.
3. Repeat test in case the errors produced a flag or an abort sequence.

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12 ETSI TS 102 486-1-2 V1.2.1 (2008-10)
TP/MAC/OBU/BI/03 Verify that the OBU can detect and manage a block of 15 bit errors in the downlink
frame using the FCS field
Reference: EN 12795 [1], clauses 5.5 and 7.4.3.1.1 e)
PICS Selection: Table A.2/2 AND Table A.4/8 AND Table A.7/1 AND Table A.7/6
TC reference: TC_MAC_OBU_BI_03
Initial condition: OBU not in sleep mode and not yet initialized
Stimulus and Expected Behaviour:
1. Tester sends downlink frame containing BST, allocating N5 public uplink
windows, but introduces a block of 15 subsequent bit errors randomly located in
the frame on transmission. The block of bit errors shall be introduced between
the end of the start flag and the start of the end flag.
2. Verify IUT does not respond within any of the public uplink windows allocated.
3. Repeat test in case the errors produced a flag or an abort sequence.

TP/MAC/OBU/BI/04 Verify that the OBU can detect and manage the abort sequence in the LPDU field of
a downlink frame
Reference: EN 12795 [1], clauses 5.7 and 7.4.3.1.1
PICS Selection: Table A.2/2 AND Table A.7/1
TC reference: TC_MAC_OBU_BI_04
Initial condition: OBU not in sleep mode and not yet initialized
Stimulus and Expected Behaviour:
1. Tester sends downlink fram
...