1、 ETSI TS 126 269 V14.0.0 (2017-04) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); eCall data transfer; In-band modem solution; Conformance testing (3GPP TS 26.269 version 14.0.0 Release 14) floppy3TECHNICAL SPECIFICATION GLOBAL SYSTEM
2、FOR MOBILE COMMUNICATIONSRETSI ETSI TS 126 269 V14.0.0 (2017-04)13GPP TS 26.269 version 14.0.0 Release 14Reference RTS/TSGS-0426269ve00 Keywords GSM,UMTS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF
3、 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice The present document can be downloaded from: http:/www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic
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9、gistered and owned by the GSM Association. ETSI ETSI TS 126 269 V14.0.0 (2017-04)23GPP TS 26.269 version 14.0.0 Release 14Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, i
10、f 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 availab
11、le 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,
12、or may be, or may become, essential to the present document. 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 ident
13、ities. 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“, “
14、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 ETS
15、I TS 126 269 V14.0.0 (2017-04)33GPP TS 26.269 version 14.0.0 Release 14Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g31 Scope 5g32 Normative references . 5g33 Definitions and abbreviations . 5g33.1 Definitions 5g33.2 Abbreviations . 6g34 General . 6g3
16、5 Conformance 7g35.1 Bit-exactness 7g35.2 Minimum performance requirements . 7g35.2.1 MSD transmission time 8g35.2.1.1 Full campaign (all AMR-FR codec modes plus GSM-FR) . 8g35.2.1.2 Error-free case for AMR 12.2 and FR . 8g35.2.1.3 GSM-HR codec . 8g35.2.1.4 Noisy conditions . 8g35.2.1.5 Scaling of P
17、CM signals . 9g35.2.2 CRC check quality 10g35.2.3 Transmission failures 10g35.2.4 False detection due to signalling tones . 10g35.2.5 Push messages 10g35.2.6 HLACK messages 11g3Annex A (normative): Test sequences and scripts for testing bit-exact implementation of eCall in-band modem. 12g3A.1 Testin
18、g a bit-exact implementation of the IVS transmitter function 12g3A.2 Testing a bit-exact implementation of the PSAP transmitter function . 13g3A.3 Testing a bit-exact implementation of the IVS receiver function 14g3A.4 Testing a bit-exact implementation of the PSAP receiver function . 14g3Annex B (n
19、ormative): Test set-up and sequences for testing minimum performance of eCall in-band modem receivers 16g3B.1 Modem Transmission Performance 16g3B.1.2 Test Tone Sensitivity 17g3Annex C (normative): Additional Performance Requirements . 18g3Annex D (informative): Change history . 19g3History 20g3ETSI
20、 ETSI TS 126 269 V14.0.0 (2017-04)43GPP TS 26.269 version 14.0.0 Release 14Foreword The present document has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the present document are subject to continuing work within the TSG and may change following formal TSG approval.
21、 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 gr
22、eater 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. ETSI ETSI TS 126 26
23、9 V14.0.0 (2017-04)53GPP TS 26.269 version 14.0.0 Release 141 Scope This Technical Specification (TS) specifies minimum performance requirements, test procedures and digital test sequences to be used for conformance testing of implementations of the eCall in-band modem. The eCall in-band modem PSAP
24、and IVS transmitters and receivers are specified in TS 26.267 1. The reference fixed point ANSI-C implementation for the specified eCall modem is provided in TS 26.268 2. The eCall in-band modem is a technology that transmits data reliably over the speech channel of the cellular and PSTN networks. I
25、t is specifically designed for transmission of the Minimum Set of Data (MSD) from IVS to PSAP for the Pan-European eCall initiative. For the purpose of the present specification, conformance is determined for the transmission of one single MSD of length 140 bytes. Other applications of the eCall in-
26、band modem are out of scope of this document. 2 Normative 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
27、.) 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 th
28、e same Release as the present document. 1 3GPP TR 26.267: “eCall Data Transfer; In-band modem solution; General Description“. 2 3GPP TS 26.268: “eCall Data Transfer; In-band modem solution; ANSI-C reference code“. 3 3GPP TR 26.969: “eCall data transfer; In-band modem solution; Characterization repor
29、t“. 4 3GPP TS 46.001: “Full rate speech; Processing functions“. 5 3GPP TS 26.071: “Mandatory speech CODEC speech processing functions; AMR speech Codec; General description“. 6 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of t
30、he present document, the terms and definitions given in TR 21.905 6 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 6. eCall: manually or automatically initiated emergency call (TS12) from a vehicle, suppleme
31、nted with a minimum set of emergency related data (MSD), as defined under the EU Commissions eSafety initiative. eCall In-band Modem: modem pair (consisting of transmitters and receivers at IVS and PSAP) that operates full-duplex and allows reliable transmission of eCall Minimum Set of Data from IVS
32、 to PSAP via the voice channel of the emergency voice call through cellular and PSTN networks. eSafety: European Commission sponsored forum to improve safety aspects of European citizens. feedback frame: downlink signal transmission interval containing feedback data - corresponds to a time interval
33、of 180 ms or 1 440 samples at an 8 kHz sampling rate ETSI ETSI TS 126 269 V14.0.0 (2017-04)63GPP TS 26.269 version 14.0.0 Release 14frame: time interval equal to 20 ms (corresponding to one AMR or FR speech frame, represented by 160 samples at an 8 kHz sampling rate) Minimum Set of Data (MSD): formi
34、ng the data component of an eCall sent from a vehicle to a Public Safety Answering Point or other designated emergency call centre. The MSD has a maximum size of 140 bytes and includes, for example, vehicle identity, location information and time-stamp. 3.2 Abbreviations For the purposes of the pres
35、ent document, the following abbreviations apply. ACK ACKnowledgement AMR Adaptive Multi-Rate (speech codec) CRC Cyclic Redundancy Check CTM Cellular Text Telephone Modem eIM eCall In-band Modem EU European Union FEC Forward Error Correction FoM Figure of Merit FR Full Rate (speech codec) GSM Global
36、System for Mobile communications IVS In-Vehicle System MSD Minimum Set of Data NACK Negative ACKnowledgement PCM Pulse Code Modulation PSAP Public Safety Answering Point PSTN Public Switched Telephone Network UMTS Universal Mobile Telecommunications Systems VAD Voice Activity Detection 4 General Thi
37、s specification provides minimum performance requirements and test procedures that are necessary to test implementations of the eCall in-band modem for correctness. Correctness in this context means that the tested eCall modem implementation works within the performance parameter range defined in th
38、is document. The eCall modem set consists of four main functional entities, i.e., the transmitter and receiver functions within the IVS and PSAP eCall modems. These functional entities are illustrated in Figure 1. g87g94g4g87g3g3 g393g381g396g410g3g282g258g410g258g3 g3 g24g62g3g272g346g258g374g374g2
39、86g367 g3g3 g3 g3g47g115g94g3g90g454 g3 g3g3 g87g94g4g87g3g100g454 g3 g3 g3 g24g62g3g381g437g410g393g437g410g3 g87g18g68g3g400g349g336g374g258g367 g3 g3 g104 g62g3g272g346g258g374g374g286g367 g3 g3 g3 g3g47g115g94g3g100g454 g3 g3g3 g87g94g4g87g3g90g454 g3 g3 g3 g3 g47g115g94g3g3 g393g381g396g410g3g2
40、82g258g410g258g3 g3 g47g115g94g3g373g381g282g286g373 g3 g87g94g4g87g3g373g381g282g286g373 g3 g24g62g3g349g374g393g437g410 g3 g87g18g68g3g400g349g336g374g258g367 g3g104g62g3g349g374g393g437g410g3g3 g104g62g3g381g437g410g393g437g410g3 g3 Figure 1: Functional components of the IVS and PSAP eCall modems
41、 ETSI ETSI TS 126 269 V14.0.0 (2017-04)73GPP TS 26.269 version 14.0.0 Release 14Clause 5 contains the procedures for conformance testing as well as the detailed performance requirements. Annex A explains the digital test sequences and scripts to be executed for conformance testing of bit-exact eCall
42、 in-band modem implementations. The test sequences and scripts are attached to this specification. Annex B describes the eCall test set-up to be used for minimum performance testing of eCall in-band modem implementations. 5 Conformance Conformance testing of the fixed-point IVS and PSAP transmitters
43、 shall be performed by demonstrating bit-exactness to the fixed-point reference C-code implementation (given in TS 26.268 2). Bit-exactness means that given a specific input sequence, the corresponding digital output sequence of the component under test shall exactly match the time-aligned output se
44、quence of the reference implementation 2 of that component. The delay of the output sequence shall not exceed a certain specified limit. Conformance testing of the IVS and PSAP receiver implementations shall be performed by either demonstrating bit-exactness to the reference C-code, or by testing ag
45、ainst a set of minimum performance requirements by means of objective measures. The bit-exact approach should be preferred over the application of objective measures if the implementation of the IVS and PSAP receivers follows the one given in the reference C-code. The MSDs, codecs and channel condit
46、ions to be used in the testing for bit-exactness as well as for minimum performance requirements are further described in Annexes A and B. Annex B also specifies the procedures for evaluating the conformance of a receiver implementation with respect to the minimum performance requirements. 5.1 Bit-e
47、xactness To guarantee interoperability and data integrity, the implementation of PSAP and IVS transmitters shall be bit-exact. For the IVS and PSAP receivers, the conformance of the implementation may be tested by showing bit-exactness. For bit-exact fixed-point implementations, test sequences and s
48、cripts are used for conformance testing. The test cases consist of input and output reference MSDs, control sequences, and PCM data files. For testing transmitters, input control sequences are fed into the IVS/PSAP transmitter and the corresponding PCM data output of the IVS/PSAP transmitter is reco
49、rded. To meet the bit exactness criterion, all test cases must yield bit-exact results for the durations of the reference sequences, compared to the provided reference IVS/PSAP PCM output files, starting from the first non-zero output sample. The maximum delay, measured as the number of zero-valued output samples of the IVS transmitter, as a reaction to any of the reference input sequences, shall not exceed 160 samples. The maximum delay, measured as the number of zero-valued output samples of the PSAP transmitter, as a reaction to any of the refe
