ETSI TS 100 392-3-8-2010 Terrestrial Trunked Radio (TETRA) Voice plus Data (V+D) Part 3 Interworking at the Inter-System Interface (ISI) Sub-part 8 Generic Speech Format Implementa.pdf

1、 ETSI TS 100 392-3-8 V1.2.1 (2010-03)Technical Specification Terrestrial Trunked Radio (TETRA);Voice plus Data (V+D);Part 3: Interworking at the Inter-System Interface (ISI);Sub-part 8: Generic Speech Format ImplementationETSI ETSI TS 100 392-3-8 V1.2.1 (2010-03) 2Reference RTS/TETRA-03196 Keywords

2、interworking, TETRA, V+D, radio 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 Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice Individual copi

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6、 as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2010. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTM, TIPHONTM, the TIPHON logo and the ETSI logo are Trade Marks of ETSI registere

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8、Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 100 392-3-8 V1.2.1 (2010-03) 3Contents Intellectual Property Rights 4g3Foreword . 4g3Introduction 5g31 Scope 6g32 References 6g32.1 Normative references . 6g32.2 Informative references 6g33 Definitions and abbreviations . 7g33.1 D

9、efinitions 7g33.2 Abbreviations . 7g34 Overview 8g35 PDU format and procedures . 8g35.1 General on traffic PDU contents 8g35.2 TETRA ISI payload 8g35.2.1 TETRA ISI payload encoding 8g35.2.2 Traffic PDU 8g35.3 Traffic PDU information elements . 9g35.3.1 Framing rate 9g35.3.2 Frame number . 9g35.3.3 I

10、nformation element control . 10g35.3.4 Additional information . 10g35.3.5 Call reference 10g35.3.6 Traffic type . 10g35.3.7 Contents control 11g35.3.8 Contents control and payload 11g3Annex A (informative): TETRA ISI channel mapping . 13g3A.1 TETRA ISI channel mapping for E1 B-channels in phase 1 13

11、g3Annex B (normative): User information transport . 15g3B.1 General . 15g3B.2 LAPF Usage . 15g3B.3 HDLC usage . 17g3Annex C (informative): Physical layer and mapping 18g3C.1 Physical layer . 18g3C.2 Mapping structure 18g3Annex D (informative): Change requests . 19g3History 20g3ETSI ETSI TS 100 392-3

12、-8 V1.2.1 (2010-03) 4Intellectual 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: “

13、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 i

14、nvestigation, 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 Sp

15、ecification (TS) has been produced by ETSI Technical Committee Terrestrial Trunked Radio (TETRA). The present document is part 3, sub-part 8 of a multi-part deliverable covering Voice plus Data (V+D), as identified below: EN 300 392-1: “General network design“; EN 300 392-2: “Air Interface (AI)“; EN

16、 300 392-3: “Interworking at the Inter-System Interface (ISI)“; EN 300 392-3-1: “General design“; EN 300 392-3-2: “Additional Network Feature Individual Call (ANF-ISIIC)“; EN 300 392-3-3: “Additional Network Feature Group Call (ANF-ISIGC)“; EN 300 392-3-4: “Additional Network Feature Short Data Serv

17、ice (ANF-ISISDS)“; EN 300 392-3-5: “Additional Network Feature Mobility Management (ANF-ISIMM)“; TS 300 392-3-6: “Speech Format Implementation for circuit mode transmission“; TS 300 392-3-7: “Speech Format Implementation for Packet Mode Transmission“; TS 300 392-3-8: “Generic Speech Format Implement

18、ation“; ETS 300 392-4: “Gateways basic operation“; EN 300 392-5: “Peripheral Equipment Interface (PEI)“; EN 300 392-7: “Security“; EN 300 392-9: “General requirements for supplementary services“; EN 300 392-10: “Supplementary services stage 1“; EN 300 392-11: “Supplementary services stage 2“; EN 300

19、 392-12: “Supplementary services stage 3“; ETS 300 392-13: “SDL model of the Air Interface (AI)“; ETS 300 392-14: “Protocol Implementation Conformance Statement (PICS) proforma specification“; TS 100 392-15: “TETRA frequency bands, duplex spacings and channel numbering“; TS 100 392-16: “Network Perf

20、ormance Metrics“; ETSI ETSI TS 100 392-3-8 V1.2.1 (2010-03) 5TR 100 392-17: “TETRA V+D and DMO specifications“; TS 100 392-18: “Air interface optimized applications“. NOTE: Part 10, sub-part 15 (Transfer of control), part 13 (SDL) and part 14 (PICS) of this multi-part deliverable are in status “hist

21、orical“ and are not maintained. Introduction Originally there were two different speech transportation format options defined for the TETRA InterSystem Interface (ISI) speech transmission one for circuit mode support and another for packet mode support. The two options allow different techniques in

22、designing and interconnecting TETRA Switching and Management Infrastructure (SwMIs). Those based on circuit mode transmission technology can use the complementary circuit mode based option, and those based on packet mode transmission technology can take advantage of the present document of the ISI.

23、The reason for having two options is found in the nature of existing TETRA SwMIs from various manufacturers. The existing SwMIs can generally be divided into two types: those that use packet switched technology and those that are using a circuit switched technology. When connecting a circuit switche

24、d SwMI to a packet switched SwMI there must be a conversion performed from one technology to the other. The present document defines a compromise solution in the speech transportation format so that no additional conversion is required. The present document should be applied in new designs instead o

25、f TS 100 392-3-6 i.7 and TS 100 392-3-7 i.8. ETSI ETSI TS 100 392-3-8 V1.2.1 (2010-03) 61 Scope The present document specifies speech transmission format implementation independent of SwMI type. The present document defines the format of user information that is transported between two SwMIs using t

26、he TETRA ISI. The present document covers how TETRA air interface circuit mode traffic is encoded for transport over various media. 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, subse

27、quent 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 informat

28、ive references. 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. 2.1 N

29、ormative 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 ETSI EN 300 392

30、-2: “Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 2: Air Interface (AI)“. 2 ETSI EN 300 392-3-1: “Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 3: Interworking at the Inter-System Interface (ISI); Sub-part 1: General Design“. 3 ETSI EN 300 395-2: “Terrestrial Trunk

31、ed Radio (TETRA); Speech codec for full-rate traffic channel; Part 2: TETRA codec“. 4 ETSI ETS 300 402-3: “Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) protocol; Data link layer; Part 3: Frame relay protocol specification“. 2.2 Informative reference

32、s 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 ITU-T Recommendation G.703:

33、“Physical/electrical characteristics of hierarchical digital interfaces“. i.2 ITU-T Recommendation G.704: “Synchronous frame structures used at 1544, 6312, 2048, 8448 and 44 736 kbit/s hierarchical levels“. ETSI ETSI TS 100 392-3-8 V1.2.1 (2010-03) 7i.3 ITU-T Recommendation Q.920: “ISDN user-network

34、 interface data link layer -General aspects“. i.4 ITU-T Recommendation Q.920 Amendment 1: “ISDN user-network interface data link layer -General aspects“. i.5 ITU-T Recommendation Q.921: “ISDN user-network interface - Data link layer specification“. i.6 ITU-T Recommendation Q.921 Amendment 1: “ISDN u

35、ser-network interface - Data link layer specification“. i.7 ETSI TS 100 392-3-6: “Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 3: Interworking at the Inter-System Interface (ISI); Sub-part 6: Speech format implementation for circuit mode transmission“. i.8 ETSI TS 100 392-3-7: “Ter

36、restrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 3: Interworking at the Inter-System Interface (ISI); Sub-part 7: Speech Format Implementation for Packet Mode Transmission“. i.9 ITU-T Recommendation I.431: “Primary rate User-Network interface - Layer 1 specification“. i.10 ITU-T Recommend

37、ation I.233.1: “ISDN Frame Relaying Bearer Service“. i.11 ITU-T Recommendation Q.922: “Digital subscriber Signalling System No. 1 (DSS 1); Data Link Layer; ISDN Data Link Layer Specification for Frame Mode Bearer Services“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the pres

38、ent document the following terms and definition applies: frame rate: nominal time between start of two consecutive frames NOTE: There may be gaps in the flow of the frames so that a frame is missing in its normal time position. 3.2 Abbreviations For the purposes of the present document, the followin

39、g abbreviations apply: ACELP Algebraic CELP DLCI Data Link Connection Identifier DMO Direct Mode Operation E1 European format for digital transmission FCS Frame Check Sequence HDLC High level Data Link Control ISDN Integrated Services Digital Network ISI Inter System Interface LAPF Link Access Proce

40、dures to Frame mode bearer services MS Mobile Station PDU Protocol Data Unit PVC Permanent Virtual Circuit SwMI Switching and Management Infrastructure TETRA Terrestrial Trunked Radio V+D Voice plus Data ETSI ETSI TS 100 392-3-8 V1.2.1 (2010-03) 84 Overview Independently of SwMI implementation, TETR

41、A speech and circuit mode data traffic is carried in packets between two TETRA systems. The TETRA traffic is carried in PDUs that may be transported in various media. In ISI phase 1 one TETRA ISI call may be carried per 64 kbit/s slot on the 2 Mbit/s E1 link. Other transport mechanisms and scenarios

42、 are outside the present document. Since the transmission defined in the present document is “packet mode“, packets may be subject to jitter. The maximum jitter is a SwMI specific characteristic. The value of the allowable maximum jitter value is outside the scope of the present document. 5 PDU form

43、at and procedures 5.1 General on traffic PDU contents As TETRA is a radio system normally at least one end of the communication is using air interface. The structure of the TETRA air interface sets some requirements on the traffic ISI PDU contents and format on the ISI. The main structure of the air

44、 interface and speech encoding is retained and traffic ISI PDU supports: 30 ms and 60 ms speech frames; 170/3 ms (56,67 ms) and 60 ms frame rates; ACELP speech coding and reservation for other codecs; and Call reference. The call reference is used to link the traffic and call instance together espec

45、ially in scenarios where no virtual connection is applied. Optionally a fully stolen or otherwise not available frame may be indicated to help an easier re-use of that timeslot for other signalling purposes at the terminating system. 5.2 TETRA ISI payload 5.2.1 TETRA ISI payload encoding The protoco

46、l has been designed to support TETRA speech codec frames (single/dual), circuit mode data and U-plane services. However, the present document only describes in detail the PDU formats for TETRA speech codec frames (single and dual) and U-plane services. Nevertheless, this principle applies equally to

47、 the other U-plane services. Generic payload structure is presented in figure 5.1. Payload Header Payload Block 1 Payload Block 2 etc. Figure 5.1: TETRA payload structure NOTE: More than two payload blocks may be used in future versions of the present document. 5.2.2 Traffic PDU The traffic PDU is c

48、omprised of the following information elements, see table 5.1: Call reference: this information element links the traffic PDU and call instance together; Traffic type: this information element shall identify the type of circuit mode speech/data service; ETSI ETSI TS 100 392-3-8 V1.2.1 (2010-03) 9 Fr

49、aming rate: this information element shall identify whether the circuit mode speech/data is continuous flow or contains jumps due to the 18thframe of the air interface; Frame Number: this information element shall indicate the sequence of packets (and may indicate where frame 18 occurs); and Contents control and payload: this information element shall define contents of the payload and the payload blocks. Table 5.1: Traffic PDU Information element Length Type C/O/M Remarks Framing rate 1 1 M Frame number 5 1 M Informatio