1、 ETSI TS 102 916-2 V1.1.1 (2012-05) Intelligent Transport Systems (ITS); Test specifications for the methods to ensure coexistence of Cooperative ITS G5 with RTTT DSRC; Part 2: Test Suite Structure and Test Purposes (TSS Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI s
2、tandards“, 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
3、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 2 of
4、 a multi-part deliverable covering the test specifications for the methods to ensure coexistence of cooperative ITS G5 with RTTT DSRC, as identified below: Part 1: “Protocol Implementation Conformance Statement (PICS)“; Part 2: “Test Suite Structure and Test Purposes (TSS Part 3: “Abstract Test Suit
5、e (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT)“. ETSI ETSI TS 102 916-2 V1.1.1 (2012-05)51 Scope The present document provides the Test Suite Structure and Test Purposes (TSS European profile standard for the physical and medium access control layer of Intelligent
6、Transport Systems operating in the 5 GHz frequency band“. 2 ETSI TS 102 916-1: “Intelligent Transport Systems (ITS); Test specifications for the methods to ensure coexistence of Cooperative ITS G5 with RTTT DSRC; Part 1: Protocol Implementation Conformance Statement (PICS)“. 3 CEN/EN 12253: “Road tr
7、ansport and traffic telematics - Dedicated Short Range Communication (DSRC) - Physical layer using microwave at 5,8 GHz“. 4 CEN/EN 13372: “Road transport and traffic telematics - Dedicated Short Range Communication (DSRC) - Profiles for RTTT applications“. 5 CEN/EN 15509: “Road transport and traffic
8、 telematics - Electronic fee collection - Interoperability application profile DSRC“. 6 ISO/IEC 9646-1: “Information technology - Open Systems Interconnection - Conformance testing methodology and framework - Part 1: General concepts“. 7 ISO/IEC 9646-7: “Information technology - Open Systems Interco
9、nnection - Conformance testing methodology and framework - Part 7: Implementation Conformance Statements“. 8 ETSI ETS 300 406: “Methods for testing and Specification (MTS); Protocol and profile conformance testing specifications; Standardization methodology“. 9 ETSI TS 102 916-3: “Intelligent Transp
10、ort Systems (ITS); Test specifications for the methods to ensure coexistence of Cooperative ITS G5 with RTTT DSRC; Part 3: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT)“. ETSI ETSI TS 102 916-2 V1.1.1 (2012-05)62.2 Informative references The foll
11、owing 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 TS 102 792: “Intelligent Transport Systems (ITS); Mitigation techniques to avoid interference between European CEN Dedicated Short Rang
12、e Communication (RTTT DSRC) equipment and Intelligent Transport Systems (ITS) operating in the 5 GHz frequency range“. i.2 ETSI TR 102 960: “Intelligent Transport Systems (ITS); Mitigation techniques to avoid interference between European CEN Dedicated Short Range Communication (RTTT DSRC) equipment
13、 and Intelligent Transport Systems (ITS) operating in the 5 GHz frequency range; Evaluation of mitigation methods and techniques “. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in TS 102 792 i.1, ES 202 663 1 and the follow
14、ing apply: Abstract Test Method (ATM): Refer to ISO/IEC 9646-1 6. Abstract Test Suite (ATS): Refer to ISO/IEC 9646-1 6. Implementation Under Test (IUT): Refer to ISO/IEC 9646-1 6. Test Purpose (TP): Refer to ISO/IEC 9646-1 6. 3.2 Abbreviations For the purposes of the present document, the abbreviati
15、ons given in TS 102 792 i.1, ES 202 663 1 and the following apply: CEN Comit Europen de Normalisation DSRC Dedicated Short Range Communication ITS Intelligent Transport System ITS-G5 Acronym for the 5,9 GHz vehicular adhoc network OBU On Board Unit RSU Road Side Unit RX Receive TP Test Purpose TSS T
16、est Suite Structure TX Transmit 4 Test configurations Test purposes of the present document address the mitigation techniques to avoid interference between European CEN Dedicated Short Range Communication (RTTT DSRC) equipment and Intelligent Transport Systems (ITS) operating in the 5 GHz frequency
17、range. The test configurations defined in TR 102 960 i.2 apply. ETSI ETSI TS 102 916-2 V1.1.1 (2012-05)75 Test Suite Structure (TSS) 5.1 Introduction Test Purposes have been written for mitigation techniques to avoid interference between European CEN Dedicated Short Range Communication (RTTT DSRC) e
18、quipment and Intelligent Transport Systems (ITS) operating in the 5 GHz frequency range as defined in TS 102 792 i.1 and ES 202 663 1. All test purposes in the present document assess mandatory functionality unless they have been marked with the keyword “OPTIONAL“ at the beginning of the TP summary.
19、 The test purposes have been divided according to the functionalities into several groups: TP_CAL Calibration Measurements TP_COEX_OBU Co-existence Interference Tests OBU 5.1.1 TP naming convention TPs are numbered, starting at 001, within each group. Groups are organized according to the TSS. Table
20、 1: TP identifier naming convention scheme Identifier: _ = Test Purpose: fiexd to “TP“ = group CAL Calibration Test COEX Coexistence Test = type of IUT: OBU On Board Unit = sequential number (01 to 99) 5.1.2 Test strategy As the base standards TS 102 792 i.1 and ES 202 663 1 contain no explicit requ
21、irements for testing, the TPs were generated as a result of an analysis of the base standard and the PICS specification TS 102 916-1 2. 5.2 Test Purposes All PICS items referred to in this clause are as specified in TS 102 916-1 2 unless indicated otherwise by another numbered reference. 5.2.1 Calib
22、ration tests The calibration tests are the initial measurements to ensure a proper operation of the IUT in different operational stages. The results are used to interpret the evaluation results in the further test purposes. 5.2.1.1 Reference measurement interference signal In this step the OBU anten
23、na is replaced by a reference RX antenna at the same position. The reference RX antenna is an OBU system only containing an antenna and an antenna port thus having the same antenna pattern as an original functional OBU. The interferer TX antenna system installed in the measurement hall will be fed w
24、ith a reference continuous ITS-G5 signal of a specific TX power (39 dBm e.i.r.p.) and a centre frequency of 5,880 GHz. The received interference power will be measured at the position of the OBU at the antenna output port. This test is repeated for each angle from 0 to 360 in fix degree steps (e.g.
25、7,5). ETSI ETSI TS 102 916-2 V1.1.1 (2012-05)8Identifier: TD_CAL_01 Summary: Interference signal reference measurement at OBU position Configuration: CF#1 SUT ITS-G5A Specification Reference: Not applicable Pre-test conditions: ITS unit sends with fixed duty cycle of 100 % ITS positioned 10 m from O
26、BU at = 0 (in front of OBU) ITS antenna position in the same height as OBU OBU replaced by a measurement receiver antenna (OBU only with antenna and antenna output port) ITS-G5A Channel: SCCH1 (5,875 GHz to 5,885 GHz) Test Sequence: Step Type Description 1 stimulus ITS unit sends with 39 dBm e.i.r.p
27、. 2 action Measure ITS signal strength at OBU position at the antenna output 3 action Record spectrum at the ITS TX output 4 action Move ITS antenna system as specified in table 2 5 loop Repeat step 2 to 4 until final position reached Table 2 Test TD_CAL_01 shall be executed with the following value
28、 combinations Sequence Number Position Test run 1 Vertical 90 (fixed) Horizontal 0 to 360 Degree step size as by PICS A.3/2 2 Test run 2 Horizontal 0 (fixed) Vertical 90 to -90, Degree step size as by PICS A.3/2 2 NOTE: “Vertical“ corresponds to elevation angle and “Horizontal“ to azimuth angle. 5.2
29、.1.2 Reference measurement CEN DSRC tolling system The different power levels of the CEN DSRC system will be evaluated. In the further interference evaluation measurement steps the CEN DSRC system will be set into two different operational modes: Mode A: Typical case with a typical path loss attenua
30、tion between RSU and OBU and, e.g. 6 dB above sensitivity limit. Mode B: Worst case with a path attenuation leading to an operation of the OBU at the sensitivity limit. Identifier: TD_CAL_02 Summary: CEN DSRC signal reference measurement at OBU position Configuration: CF#2 SUT CEN DSRC RSU Specifica
31、tion Reference: CEN EN 12253 3 Pre-test conditions: OBU antenna positioned in the middle of the measurement chamber RSU position around 5 m above reference level and around 5 m away from OBU antenna position Test Sequence: Step Type Description 1 stimulus RSU unit set to maximum power level (33 dBm
32、e.i.r.p setting) 2 action Measure RSU signal strength at OBU antenna position 3 action Decrease RSU TX power setting by 1 dB 4 loop Repeat step 2 to 3 for OBU antenna output power down to -55 dBm ETSI ETSI TS 102 916-2 V1.1.1 (2012-05)95.2.1.3 BER reference measurement at the CEN DSRC tolling system
33、 with ITS interference In this reference measurement the dependency of the RSU BER and the ITS interference power will be evaluated using an ITS signal with 100 % duty cycle. The resulting dependency can be used as the reference for further evaluation and as a functional verification of the overall
34、set-up. Identifier: TD_CAL_03 Summary: CEN DSRC BER reference measurement with ITS interference 100 % Configuration: CF#3 SUT CEN DSRC RSU Specification Reference: CEN EN 12253 3, ES 202 663 1 Pre-test conditions: OBU positioned in the middle of the measurement chamber RSU position around 5 m above
35、reference level and around 5 m away from OBU position Set RSU OBU communication in worst case mode (Mode B) Set RSU OBU communication into echo mode Position ITS interference TX in front of the OBU = 0 and = 0 (worst case position for passenger car) ITS-G5A Channel: SCCH1 (5,875 GHz to 5,885 GHz) CE
36、N DSRC Channel: highest CEN DSRC channel 5,8125 GHz centre frequency and 5,815 GHz upper channel limit. Test Sequence: Step Type Description 1 stimulus ITS unit sends with 36 dBm e.i.r.p. 2 action Measure ITS signal strength at OBU position 3 action Record BER of ECHO communication at RSU 4 action D
37、ecrease ITS TX power by 1 dB 5 loop Repeat step 2 to 4 until ITS TX power is 10 dBm 5.2.2 Measurement 1: OBU sensitivity evaluation The interfering signal will be fed into the chambers antenna system and transmitted in the direction of the OBU installed in the reference car positioned on the turntab
38、le in the middle of the chamber. The chambers antenna system will be moved 180 or 360, respectively around the OBU installed in the car. At each position the e.i.r.p. power of the interfering signal will be varied from a low level to the maximum level, e.g. 10 dBm to 33 dBm. The interfering signal a
39、ctivity factor in this measurement will be 100 %. The injected interference signal should behave as if it would be at the worst case distance (5 m) to the OBU. Thus the real TX power values of the ITS interfering source need to be increased by 6 dB in order to account for the real distance of 10 m g
40、iven by the test setup. The tolling station link will be set into two different operational modes: Mode A: Typical case with a typical path loss attenuation between RSU and OBU and, e.g. 6 dB above sensitivity limit. Mode B: Worst case with a path attenuation leading to an operation of the OBU at th
41、e sensitivity limit. ETSI ETSI TS 102 916-2 V1.1.1 (2012-05)10The interfering effect at the CEN DSRC tolling station will be evaluated and recorded. Identifier: TD_COEX_OBU_01 Summary: OBU Interference sensitivity pattern Configuration: CF#3 SUT OBU Specification Reference: CEN EN 12253 3, ES 202 66
42、3 1 Pre-test conditions: ITS unit sends with fixed duty cycle of 100 % ITS positioned 10 m from OBU at = 0 (in front of OBU) ITS antenna position at same height as OBU OBU positioned in the specified car mounting position RSU positioned based on typical requirements Stable communication between RSU
43、and OBU in mode A or B, respectively ITS-G5A Channel: SCCH1 (5,875 GHz to 5,885 GHz) CEN DSRC Channel: highest CEN DSRC channel 5,8125 GHz centre frequency and 5,815 GHz upper channel limit. Test Sequence: Step Type Description 1 stimulus ITS unit sends with initial output power level according to t
44、he results of TD_CAL_03 2 action Record BER of RSU 3 verify IF BER 10-6Goto step 9 ELSE Continue 4 action Decrease ITS power by 3 dB 5 stimulus ITS unit sends with decreased power 6 action Record BER of RSU 7 verify IF ITS power 10 dBm reached or BER 10-6Non-interference threshold detected, goto ste
45、p 9 ELSE Continue 8 loop Repeat steps 4 to 7 9 action Move ITS clockwise by 7,5 from last position 10 verify IF all positions covered (360) Goto step 12 ELSE Continue 11 loop Repeat steps 1 to 9 12 action Stop executionTable 3 Test TD_COEX_OBU_01 shall be executed with the following value combinatio
46、ns Sequence Number Mode ITS-G5 Transmit Power Range e.i.r.p. in dBm Test run 1 Mode A Initial transmit power increased in steps as by PICS A.3/1 2 Test run 2 Mode B NOTE: The ITS-G5 transmit power applied at 10 m distance to the CEN DSRC OBU. 5.2.3 Measurement 2: Single interferer from front This sc
47、enario represents the worst case scenario of the interference set up. In this case the interfering ITS-G5 station will be positioned directly in front of the OBU unit in a distance of 5 m. This represents the case where a car is directly in front of the victim car equipped with a CEN DSRC OBU. In ad
48、dition to the normal car case where a passenger car is positioned in front of a passenger car, a scenario using OBUs as victims installed in a truck like position will be measured. In this specific measurement the OBU antenna will have no upwards tilt. In the measurement setup the distance will be 1
49、0 m and thus a correction factor needs to be taken into account. ETSI ETSI TS 102 916-2 V1.1.1 (2012-05)115.2.3.1 OBU Interference for different duty cycles, front position Identifier: TD_COEX_OBU_02 Summary: OBU Interference for different duty cycles, front position Configuration: CF#3 SUT OBU Specification Reference: CEN EN 12253 3, CEN EN 13372 4, CEN EN 15509 5, ES 202 663 1 Pre-test conditions: ITS unit sends with variable o
