1、* 1 ECHNICAL REPORT ETR 265 February 1996 Source: ETSI TC-RES Reference: DTWRES-06014 ICs: 33.020, 33.060.50 Key words: TETRA, Direct Mode Radio Equipment and Systems (RES); Trans-European Trunked Radio (TETRA); Technical requirements specification for Direct Mode (DM) ETSI European Telecommunicatio
2、ns Standards Institute ETSI Secretariat Postal address: F-O6921 Sophia Antipolis CEDEX - FRANCE Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: secretariatetsi.fr Tel.: +33 92 94 42 O0 - Fax: +33 93 65 47 16 Copyri
3、ght Notification: No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. Q European Telecommunications Standards Institute 1996. All rights reserved. ETSI ETRu265 96 3Y00855 0082504 O29 Page 2 ETR 265: Fe
4、bruary 1996 Whilst every care has been taken in the preparation and publication of this document, errors in content, typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to “ETSI Editing and Committee Support Dept.“ at the address shown on the title page.
5、 ETSI ETRu2b5 96 3400855 0082.505 Tb5 Page 3 ETR 265: February 1996 Contents Foreword . 5 Introduction 5 Scope 7 Normative references 7 Definitions and abbreviations 7 3.1 Definitions 7 3.2 Abbreviations . 8 Terminal types . 9 4.1 Terminal types standardised elsewhere 9 4.2 Terminal types to be stan
6、dardised in the DM standard . 9 Reference models . 10 5.1 Standard TETRA reference model 10 5.2 DM reference model 10 5.3 Dual watch reference model 11 5.4 Repeater reference model . 11 5.5 Gateway reference models 12 5.6 Repeatedgateway combination reference models 12 5.7 MS reference interfaces .
7、12 5.8 Protocol stacks in the MS 13 Operating scenarios 15 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 All DM terminals outside of TETRA network coverage (DM-DM) 15 All DM terminals inside of TETRA network coverage (DM-DM) 16 Terminals both outside and within the TETRA network coverage zone 1 (DM-DM) 17 Connect
8、ion with a TETRA network coverage via a gateway (DM-GATE-SwMI) . 18 Extension of DM coverage using a transponder repeater (DM-REP-DM) . 19 Extension of DM coverage using a time division repeater (DM-REP-DM) 19 Extension of DM coverage using repeater gateway combinations 20 Terminals both outside and
9、 within the TETRA network coverage zone #2 (DM-DM) . 18 Services supported by TETRA DM . 20 7.1 Service definitions 20 7.1.1 Bearer service . 21 7.1.2 Teleservice 21 7.1.3 Intrinsic service 21 Summary of basic services supported . 21 Description of services supported in DM operation . 21 7.3.1 Voice
10、 teleservices . 21 7.2 7.3 7.3.1.1 7.3.1.2 7.3.2.1 7.3.2.2 7.3.3 Short data service . 23 7.4 Intrinsic services 23 7.4.1 Introduction 23 7.4.2 DM late entry . 23 7.4.3 Transmitting party number identification . 24 7.4.4 Emergency calls 24 Individual speech call . 22 Group speech call 22 Circuit mode
11、 unprotected bearer services . 22 Circuit mode protected bearer services . 23 7.3.2 Bearer services . 22 . . ETSI ETR*2b5 96 = 3400855 0082506 9TL Page 4 ETR 265: February 1996 8 9 10 11 12 13 14 Services using a DM repeater 24 8.1 Voice and data services supported . 24 8.2 Intrinsic services 24 8.2
12、.1 Repeater selection 24 Services using a directltrunking mode gateway . 24 Services using a repeatedgateway combination 25 The DM air interface . 25 11.1 Channels . 25 11.2 Presence checking in DM . 25 DM dual watch 25 12.1 Idle state 26 12.2 Active state 26 Active in DM 26 Active in trunked mode .
13、 26 12.2.1 12.2.2 Security . 26 Performance figures . 26 14.1 14.1.1 Coverage area 26 14.1.2 Call set up time . 26 14.1.3 Call maintenance 27 Performance figures . DM repeater operation 27 14.2.1 Call set up time . 27 14.2.2 Call maintenance 27 14.2.3 Repeater selection 27 performance figures - DM g
14、ateway operation . 27 14.3.1 Call maintenance 27 14.3.2 Gateway selection . 27 Performance figures . OM basic operation . 26 14.2 14.3 14.4 Performance figures - dual watch operation . 27 ETSI ETRxZb5 9b 3Lt00855 0082507 838 Page 5 ETR 265: February 1996 Foreword This ETSI Technical Report (ETR) has
15、 been produced by the Radio Equipment and Systems (RES) Technical Committee of the European Telecommunications Standards Institute (ETSI). Introduction This ETR describes the technical requirements for TETRA Direct Mode (DM) operation. It is based on ETSI Technical Sub-Committee RES 6 WG1, WG2 and W
16、G3 input documents. This version is an update of former STC RES 6 working documents describing services and facilities of DM operation. Due to the large number of possible options and the corresponding complexity in the level of standardisation, it has become necessary that DM operation is treated a
17、s a separate, but complementary, part of the TETRA standard in order to sufficiently establish the required level of standardisation. - ETSI ETRt2b5 b = 3400855 0082508 774 Page 6 ETR 265: February 1996 Blank page ETSI ETRmZb5 96 W 3400855 0082509 600 W Page 7 ETR 265: February 1996 1 Scope This ETR
18、 is the technical requirements specification for TETRA Direct Mode (DM) operation. The objective of this ETR is to describe TETRA DM Operation and to identify and define the services and facilities to be standardised for TETRA DM Operation. TETRA DM Operation developed as a concept where a suitably
19、equipped Mobile Station had the capability to communicate either via a base station in TETRA-Trunking mode and also in a direct terminal to terminal mode using TETRA-derived transmission standards and technology without the need for a intervening base station. This Technical Requirements ETR is inte
20、nded to provide the starting point for system design and should provide sufficient criteria against which a number of possible system options can be evaluated and considered. It will introduce some logical grouping of functions but it should remain implementation independent. This ETR is applicable
21、to both public and private networks. This ETR covers digital speech and data services for terminals working in a DM of operation. The following Mobile Station terminal types will not to be defined within the TETRA DM Standard: a) A dual mode terminal that can operate in TETRA mode and also some othe
22、r mode such as analogue FM (conventional or Trunking). A gateway terminal which provides gateway connectivity between a DM terminal and a non-TETRA network such as to Integrated Services Digital Network (ISDN). b) DM Operation should not preclude special (terminal) services and user features which a
23、re not specifically defined in this ETR. 2 Normative references This ETR incorporates by dated and undated reference, provisions from a number of other publications. These normative references are cited at the appropriate places in the text and the respective publications are listed hereafter. For d
24、ated references, subsequent amendments to or revisions of any of these publications apply to this ETR only when incorporated into it be amendment or revision. For undated references the latest edition of the publication referred to applies. ETS 300 392-2: “Radio Equipment and Systems (RES); Trans-Eu
25、ropean Trunked Radio (TETRA); Voice plus Data (V+D); Part 2: Air Interface (Al)“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of this ETR, the following definitions apply: bearer service: A type of service which provides the capability for information transfer between user- netw
26、ork interfaces and as such usually only involves functionality of the lower layers (layers 1-3) in the Open Systems Interconnection (OSI) protocol stack. NOTE: The customer may normally choose any set of higher (layers 4-7) protocols in order to complete the communication protocol stack, but the und
27、erlying bearer service will not ascertain compatibility between customers at these higher levels. bi-directional channel: A channel that can carry information in both directions. ETSI ETRx2bC 96 3400855 0082510 322 = Page 8 ETR 265: February 1996 direct Set-up signalling: A signalling procedure wher
28、e immediate communication can take place between the calling and the called users without the alerting process and without an explicit response from the called user that he has answered. direct mode operation: A mode of simplex operation where mobile subscriber radio units may communicate using radi
29、o frequencies which may be monitored by, but which are outside the control of, the TETRA trunked network. DM operation is performed without intervention of any base station. duplex (full duplex): A mode of operation by which information can be transferred in both directions and where the two directi
30、ons are independent. gateway: A device which will enable the interconnecting of two networks which inherently use different and incompatible protocols. incoming call: A terminating call which, from the viewpoint of an individual party, is a call that was initiated by another party. intrinsic service
31、: An intrinsic service is a service which is inherent within a voice or data service. It forms an integral pari of the signalling associated with that voice or data service. Mobile Station (MS): A physical grouping that contains all of the mobile equipment that is used to obtain TETRA services. By d
32、efinition, a MS contains at least one Mobile Radio Stack (MRS). onoff hook signalling: A signalling procedure which includes an alerting process to the called user. The calling user must wait for an explicit response from the called user that he has answered before the call can be Set-up. outgoing c
33、all: A call which, from the viewpoint of an individual participant in the call, is initiated by that participant. simplex: A mode of single or dual frequency working in which information can be transferred in both directions but not at the same time. teleservice: A teleservice is defined as a type o
34、f service which provides the complete capability, including terminal equipment functions, for communication between users according to TETRA protocols trunking mode operation: A mode of operation where mobile terminals may communicate via the TETRA voice and data air interface which is controlled by
35、 the TETRA switching and management infrastructure (SwMI). 3.2 Abbreviations For the purposes of this ETR, the following abbreviations apply: AP2 AP3 DM DM-MS DMO-MS DM-GATE DM-REP DU-MS DW-MS GSSI GTS I IS1 IS0 ISS1 ITS1 MS MT MTO Access Point within Mobile Terminating Unit Access Point within Mobi
36、le Terminating Unit Direct Mode Direct Mode capable Mobile Station Direct Mode Only Mobile Station Direct Mode Gateway terminal Direct Mode Repeater terminal Dual Mode Mobile Station Dual Watch Mobile Station Group Short subscriber Identity Group TETRA Subscriber Identity Inter System Interface Inte
37、rnational Organisation for Standardisation Individual Short Subscriber Identity Individual TETRA Subscriber Identity Mobile Station Mobile Termination Mobile Termination type O ETSI ETRm265 96 3400855 0082533 269 MT2 MTU os1 RESB SwMI SW-MS TE TE2 TE1 TETRA Ud Um V+D Page 9 ETR 265: February 1996 Mo
38、bile Termination type 2 Mobile Terminating Unit Open Systems Interconnection ETSI Sub-Technical Committee RES8 (Radio Equipment and Systems - 6) TETRA Switching and Management Infrastructure Switchable Mobile Station (Direct Modeflrunked) Terminal Equipment TE presenting a TETRA interface TETRA Equi
39、pment Identity Trans European Trunked RAdio TETRA Direct Mode air interface TETRA air interface Voice Plus Data Refer to TETRA O1 .O4 for additional common definitions and abbreviations. 4 Terminal types A number of alternatives are possible when considering the configuration and capability of termi
40、nals which could be applied to DM operation. All variants should be identified here with the intention that the subset of these which are specifically applicable to DM operation should be standardised in the DM Specification. There are some exceptions to this generalisation however where a terminal
41、type will not be catered for in the TETRA DM standard. Examples of this are where a DM capable terminai has the ability to communicate with a non-TETRA network. It is entirely possible that such terminais could be produced and applied within a DM service, but this is an implementation and not a stan
42、dardisation issue as the non- TETRA elements fall outside of the scope of this ETR. Such terminal types may be standardised at a later date. 4.1 Terminal types standardised elsewhere The following Mobile Station (MS) terminal type is defined within the TETRA trunked mode standard: - trunking mode on
43、ly terminal: A mobile terminal that can operate only in TETRA trunking mode. 4.2 Terminal types to be standardised in the DM standard The following MS terminal types are to be defined within the TETRA DM Standard: - direct mode only terminal: A mobile terminal that can operate only in TETRA DM; - du
44、al watch terminal: A mobile terminal that can operate either in TETRA DM or TETRA trunking mode. Only one mode can be selected at any given time but it is capable of monitoring the trunking control channel while in DM or a DM channel while in trunking mode; - switchable terminal: A mobile terminal t
45、hat can operate either in TETRA DM or TETRA trunking mode. Only one mode can be selected at any given time and the terminal is not capable of monitoring DM channels while in trunking mode or trunking channels while in DM; - repeater terminal: A terminal that operates in TETRA DM and provides a repea
46、ter function to enable two or more DM capable terminals to extend their coverage range; - gateway terminal (direct mode - trunking mode): A terminal which provides gateway connectivity between a DM mobile and a TETRA trunked network. The gateway provides the interface between TETRA DM and TETRA trun
47、ked mode. - ETSI ETRx265 96 3400855 0082532 LT5 Page 10 ETR 265: February 1996 5 Reference models In this clause a number of reference models are identified. The purpose behind these models is to assist in providing a clear and unambiguous definition of the interfaces which exist between the various
48、 terminal types and, if relevant, to any other involved terminal or network entities. The reference models shown below should cover all distinct operating possibilities and should provide a framework for simply describing the technical requirements for these interfaces. The abbreviations used in the
49、 reference models are defined in the abbreviations list earlier in the ETR. The abbreviation DM-MS is used as a generalised term to include all mobile terminals capable of working in DM, and so encompasses all types defined in clause 4. 5.1 Standard TETRA reference model As a reference basis for comparison of the differences between standard TETRA trunked mode operation and TETRA DM operation, figure 1 shows the most basic standard TETRA trunked reference model. Figure 1: Standard TETRA configuration using a TETRA SwMI Communication via the MSs is over the
