ETSI TS 126 267-2018 Digital cellular telecommunications system (Phase 2+) (GSM) Universal Mobile Telecommunications System (UMTS) eCall data transfer In-band modem solution Genera_1.pdf

1、 ETSI TS 126 267 V15.0.0 (2018-07) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); eCall data transfer; In-band modem solution; General description (3GPP TS 26.267 version 15.0.0 Release 15) TECHNICAL SPECIFICATION GLOBAL SYSTEM FOR MOB

2、ILE COMMUNICATIONSRETSI ETSI TS 126 267 V15.0.0 (2018-07)13GPP TS 26.267 version 15.0.0 Release 15Reference RTS/TSGS-0426267vf00 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 742 C

3、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 and/or

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9、s registered and owned by the GSM Association. ETSI ETSI TS 126 267 V15.0.0 (2018-07)23GPP TS 26.267 version 15.0.0 Release 15Intellectual Property Rights Essential patents IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information pertaining to

10、 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. La

11、test 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

12、 Web server) which are, or may be, or may become, essential to the present document. Trademarks The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners. ETSI claims no ownership of these except for any which are indicated as being the proper

13、ty of ETSI, and conveys no right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Technical Specification (TS) has

14、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 identities. These should be interpreted as being references to the corresponding ETSI deliverables. The cross ref

15、erence 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“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in

16、 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 ETSI TS 126 267 V15.0.0 (2018-07)33GPP TS 26.267 version 15.0.0 Release 15Contents Intellectual Property Rights

17、 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 5g3Introduction 5g31 Scope 6g32 References 6g33 Definitions and abbreviations . 7g33.1 Definitions 7g33.2 Abbreviations . 7g34 General overview . 8g34.1 eCall system overview 8g34.2 eCall system requirements 8g34.3 eCall in-band modem architect

18、ure 9g34.3.1 Principle operation of the IVS data modem 10g34.3.2 Principle operation of the PSAP data modem . 11g35 Functional description of the IVS data modem 12g35.1 IVS transmitter . 12g35.1.1 MSD Message . 12g35.1.2 CRC code 12g35.1.3 HARQ FEC encoder . 13g35.1.3.1 Bit scrambling . 13g35.1.3.2

19、Turbo Coding 13g35.1.3.3 HARQ for MSD messages 14g35.1.4 Modulation 14g35.1.5 MSD data frame format 15g35.1.6 Synchronization signal and frame format . 16g35.1.7 Multiplexing . 17g35.1.8 Uplink signal and retransmission 17g35.1.9 Additional signal format for push mode . 18g35.2 IVS receiver 18g35.2.

20、1 Synchronization detector/tracker 18g35.2.2 Timing Unit 19g35.2.3 De-multiplexing 19g35.2.4 Data demodulation and FEC decoding . 19g35.2.5 Message handler . 20g36 Functional description of the PSAP data modem . 20g36.1 PSAP transmitter 20g36.1.1 Message encoding . 20g36.1.2 BCH encoding 21g36.1.3 M

21、odulation 21g36.1.4 Downlink signal 22g36.1.4.1 Link-layer feedback messages 22g36.1.4.2 Higher-layer acknowledgement messages 22g36.1.4.3 Handling of downlink messages . 23g36.1.5 Synchronization 23g36.1.6 Multiplexing . 23g36.2 PSAP receiver 23g36.2.1 Synchronization detector/tracker 24g36.2.2 Tim

22、ing Unit 24g36.2.3 De-multiplexer 24g36.2.4 Data demodulator 24g3ETSI ETSI TS 126 267 V15.0.0 (2018-07)43GPP TS 26.267 version 15.0.0 Release 156.2.5 HARQ FEC decoder . 24g36.2.6 CRC handling . 25g36.2.7 Push mode - push message detector . 25g37 Transmission protocol and error handling 25g37.1 Norma

23、l operation 25g37.2 Abnormal operation 26g37.3 PSAP and IVS protocol state models . 28g3Annex A (informative): eCall Performance Requirements/Objectives and Design Constraints. 31g3A.1 Definitions 31g3A.2 Performance Requirements 31g3A.3 Performance Objectives . 33g3A.4 Design Constraints . 34g3Anne

24、x B (informative): Change history . 35g3History 36g3ETSI ETSI TS 126 267 V15.0.0 (2018-07)53GPP TS 26.267 version 15.0.0 Release 15Foreword The present document has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the present document are subject to continuing work with

25、in the TSG and may change following formal TSG approval. 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 f

26、or information; 2 presented to TSG for approval; 3 or greater 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 hav

27、e been incorporated in the document. Introduction eCall refers to an interoperable in-vehicle emergency call service which is envisioned to be introduced and operated across Europe in 2014. According to reports from the European Commission, it is foreseen that eCall will be offered on all new vehicl

28、es in the EU by 2014. The European Commission has brought together standardization bodies, the automotive industry, mobile telecommunication industry, public emergency authorities and others in the eSafety Forum initiative which has identified high-level requirements, recommendations and guidelines

29、for this eCall service 9 and 10. The eSafety Forum has assigned ETSI MSG to standardize those parts of the eCall service that affect the mobile communication system. The development of the eCall standard has been further delegated to the 3rdGeneration Partnership Project (3GPP). ETSI ETSI TS 126 267

30、 V15.0.0 (2018-07)63GPP TS 26.267 version 15.0.0 Release 151 Scope The present document specifies the eCall In-band Modem, which is used for reliable transmission of the eCall Minimum Set of Data (MSD) from an In-Vehicle System (IVS) to the Public Safety Answering Point (PSAP) via the voice channel

31、of cellular and PSTN networks. The European Union eCall requirements, recommendations and guidelines were developed by eSafety Forum 10 and 11, with important additional work produced by ETSI MSG, GSME, 3GPP, and CEN. Previous work in 3GPP TR 22.967 3 “Transfer of Emergency Call Data“, examined the

32、issues associated with the transmission of emergency call data from a vehicle to a PSAP. This analysis identified that the preferred option be based on an in-band modem solution. eCall provides reliable full-duplex data communications between IVS and PSAP in addition to emergency voice call (E112) v

33、ia the cellular network, and can be initiated either automatically or manually 1. The eCall In-band Modem uses the same voice channel as used for the emergency voice call. eCall allows reliable transmission of MSD alternating with a speech conversation through the existing voice communication paths

34、in cellular mobile phone systems. The expected benefit is that emergency services will be made aware of accidents much more rapidly, will get precise information on location, vehicle type etc. and therefore will be able to reach accident victims faster, with the potential to save many lives annually

35、. The eCall in-band modem solution described here exceeds the eCall requirements (see Annex A) by means of a combination of innovations in data modulation scheme, synchronization, forward error correction coding, hybrid ARQ (HARQ) and incremental redundancy transmission. The present document provide

36、s a general overview and algorithm description of the eCall in-band modems, including IVS modem and PSAP modem, to form the complete full-duplex transmission. The eCall in-band modems (IVS and PSAP) are fully specified by this TS together with the C-code reference as provided in 3GPP TS 26.268 2. 3G

37、PP TS 26.269 13 deals with the conformance testing for eCall modem implementations, and 3GPP TR 26.969 14 contains a characterization report of the in-band modem. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present docum

38、ent. - References are either specific (identified by date of publication, edition number, version number, etc.) 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 (i

39、ncluding a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document. 1 3GPP TS 22.101: “Service aspects; Service principles“. 2 3GPP TS 26.268: “eCall Data Transfer; In-band modem solution; ANSI-C reference code“. 3

40、3GPP TR 22.967: “Transfer of Emergency Call Data“. 4 3GPP TR 26.967: “eCall Data Transfer; In-band modem solution“. 5 3GPP TS 46.001: “Full rate speech; Processing functions“. 6 3GPP TS 46.032: “Full rate speech; Voice Activity Detection (VAD) for full rate speech traffic channels“. 7 3GPP TS 26.071

41、: “AMR speech Codec; General description“. ETSI ETSI TS 126 267 V15.0.0 (2018-07)73GPP TS 26.267 version 15.0.0 Release 158 3GPP TS 26.094: “Mandatory speech codec speech processing functions; Adaptive Multi-Rate (AMR) speech codec; Voice Activity Detector (VAD)“. 9 eSafety Forum eCall Driving Group

42、, “European Memorandum of Understanding for Realisation of Interoperable In-Vehicle eCall“, May 2004. 10 eSafety Forum, “Clarification Paper EG.2 , High level requirements for a eCall in-vehicle system, Supplier perspective“, March 2006, Version 1.0. 11 eSafety Forum, “Recommendations of the DG eCal

43、l for the introduction of the pan-European eCall“, April 2006, Version 2.0. 12 3GPP TS 26.226: “Cellular text telephone modem; General description“. 13 3GPP TS 26.269: “eCall Data Transfer; In-band modem solution; Conformance testing“. 14 3GPP TR 26.969 “ eCall Data Transfer; In-band modem solution;

44、 Characterization report“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: eCall: A manually or automatically initiated emergency call (TS12) from a vehicle, supplemented with a minimum set of emergency related data

45、 (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 to PSAP via the voice channel of the emergency v

46、oice 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 of 140 ms or 1 120 samples at an 8 kHz sampling r

47、ate. frame (or: speech frame): Time interval equal to 20 ms (corresponding to one AMR or FR speech frame, represented by 160 samples at an 8 kHz sampling rate). MSD: The Minimum Set of Data forming the data component of an eCall sent from a vehicle to a Public Safety Answering Point or other designa

48、ted emergency call centre. The MSD has a maximum size of 140 bytes and includes, for example, vehicle identity, location information and time-stamp. MSD data frame: Uplink signal transmission interval containing the data of one MSD (after synchronization has been established) - corresponds to a time

49、 interval of 1320 ms or 10560 samples (fast modulator) and 2 320 ms or 18560 samples (robust modulator) assuming an 8 kHz sampling rate. modulation frame: Symbol transmission time interval equal to 2 ms corresponding to 16 samples at 8 kHz sampling rate (fast modulator), or 4 ms corresponding to 32 samples at 8 kHz sampling rate (robust modulator). synchronization frame: Signal transmission interval containing synchronization information - corresponds to a time interval of 260 ms or 2 080 samples at an 8 kHz sampling rate. 3.2 A