1、 ETSI TR 102 021-12 V1.1.1 (2012-08) Terrestrial Trunked Radio (TETRA); User Requirement Specification TETRA Release 2.1; Part 12: Direct Mode Operation (DMO) Technical Report ETSI ETSI TR 102 021-12 V1.1.1 (2012-08)2Reference DTR/TETRA-01201 Keywords DMO, requirements, TETRA, user ETSI 650 Route de
2、s 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 copies of the present document can be downloaded from
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6、ht and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2012. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are Trade Marks of ETSI regi
7、stered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TR 102 021-12 V1.1.1 (2012-08)3Contents Intellectual Property Rights 4g3Foreword . 4g3Introduction 4g31 Scope 6g32 References 6g3
8、2.1 Normative references . 6g32.2 Informative references 6g33 Definitions and abbreviations . 6g33.1 Definitions 6g33.2 Abbreviations . 7g34 User Requirement Specification . 7g34.1 Introduction 7g34.2 General requirements . 7g34.3 DMO variants . 7g34.4 Operational scenarios in more detail 8g34.4.1 F
9、ire brigade on scene and in-building communication . 8g34.4.2 Police covert and special operation . 9g35 Future of TETRA workshop 2007: New ideas and improvement areas . 9g35.1 Future of TETRA workshop . 9g35.2 New Ideas . 9g35.3 Improvement areas 10g36 Requirements developed after 2007 . 10g36.1 In
10、troduction 10g36.2 Callout 10g36.2.1 Description 10g36.2.2 Callout in DMO 11g36.3 DMO Edge of Range Indication . 11g37 Market 11g37.1 General . 11g37.2 Callout 11g37.3 Edge of Range Indication . 11g37.4 Range Extension . 11g37.5 Spectrally Efficient DMO 12g3Annex A: TC TETRA WG8 input 13g3A.1 Introd
11、uction 13g3A.2 Potential new work activity 13g3History 14g3ETSI ETSI TR 102 021-12 V1.1.1 (2012-08)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 ava
12、ilable 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 available on the ETSI Web ser
13、ver (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 referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become
14、, essential to the present document. Foreword This Technical Report (TR) has been produced by ETSI Technical Committee Terrestrial Trunked Radio (TETRA). The present document is part 12 of a multi-part deliverable covering the User Requirement Specifications (URSs) for TETRA Release 2 and Release 2.
15、1, as identified below: Part 1: “General Overview“; Part 2: “High Speed Data“; Part 3: “Codec“; Part 4: “Air Interface Enhancements“; Part 5: “Interworking and Roaming“; Part 6: “Smart Card (SC) and Subscriber Identity Module (SIM) “; Part 7: “Security“; Part 8: “Air - Ground - Air services“; Part 9
16、: “Peripheral Equipment Interface“; Part 10: “Local Mode Broadband“; Part 11: “Over The Air Management“; Part 12: “Direct Mode Operation“. Introduction The Terms of Reference for TC TETRA approved at ETSI Board meeting #69, November 2008 is to produce ETSI deliverables (and maintenance thereafter) i
17、n accordance with the following requirements: The Terms of Reference for TC TETRA are to produce ETSI deliverables (and maintenance thereafter) in accordance with the following requirements: a) The provision of user driven services, facilities and functionality as required by traditional Professiona
18、l Mobile Radio (PMR) user organizations such as the Emergency Services, Government, Military, Transportation, Utility and Industrial organizations as well as Public Access Mobile Radio (PAMR) Operators. b) The evolution and enhancement of TETRA as required by the market with the provision of new ser
19、vices, facilities and functionality made possible by new technology innovations and standards. ETSI ETSI TR 102 021-12 V1.1.1 (2012-08)5c) Further enhancements of the TETRA standard in order to provide increased benefits and optimization in terms of spectrum efficiency, network capacity, system perf
20、ormance, quality of service, security and other relevant parameters. d) The backward compatibility and integration of the new services, facilities and functionality with existing TETRA standards in order to future-proof the existing and future investments of TETRA users. Technical Objective: TETRA i
21、s one of a number of digital wireless communication technologies standardized by ETSI. ETSI TC TETRA produces standards and/or adapts existing standards for efficient digital PMR and PAMR voice and data services, including broadband evolution. The URS is required by TC TETRA to guide the enhancement
22、 of the current TETRA DMO standard. ETSI ETSI TR 102 021-12 V1.1.1 (2012-08)61 Scope The present document provides the User Requirement Specifications (URSs) for the TETRA Direct Mode Operation. The present document is applicable to the specification of TETRA Release 2.1 equipment. The user requirem
23、ents contained in the present document are described in non-technical terms and are based on discussions in TC TETRA WG1 and on an analysis of the results for DMO from the 2001 TETRA Release 2 Market Questionnaire and the 2007 Future of TETRA workshop i.1. 2 References References are either specific
24、 (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the reference document (including any amendments) applies. Referenced documents which are not foun
25、d 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 Normative references The following referenced documents
26、 are necessary for the application of the present document. Not applicable. 2.2 Informative references The following 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 TR 102 621: “Terrestrial
27、 Trunked Radio (TETRA); TWC2007 Future of TETRA workshop report“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: TETRA Release 2: Work Programme with new terms of reference within ETSI Project TETRA to enhance the
28、services and facilities of TETRA in order to meet new user requirements, utilize new technology and increase the longevity of TETRA within the traditional market domains of PMR and PAMR TETRA Release 2.1: Work Programme within TC TETRA to enhance the services and facilities of TETRA in order to meet
29、 new user requirements, utilize new technology and increase the longevity of TETRA within the traditional market domains of PMR and PAMR ETSI ETSI TR 102 021-12 V1.1.1 (2012-08)73.2 Abbreviations For the purposes of the present document, the following abbreviations apply: DMO Direct Mode Operation E
30、TSI European Telecommunications Standards Institute FSK Frequency Shift Keying MS Mobile Station PAMR Public Access Mobile Radio PMR Professional (or Private) Mobile Radio RF Radio Frequency SC Smart Card SIM Subscriber Identity Module TEDS TETRA Enhanced Data Service TETRA TErrestrial Trunked RAdio
31、 TMO Trunked Mode Operation TR Technical Report URS User Requirement Specification 4 User Requirement Specification 4.1 Introduction TETRA networks provide users with advanced services, mobile and portable coverage and typically wide area mobility. Still it may not be possible and economical to fulf
32、il all operational scenarios 100 % of the time with a TETRA network. For specific operational scenarios and in specific circumstances there is a need for network independent communication, further to be called Direct Mode Operation or DMO in the present document. Examples of operational scenarios th
33、at (sometimes) cannot rely on a network only are: Police covert and special operations. Fire brigade on-scene and in-building communication to smoke divers. Examples of specific situations and circumstances where there is a need for an additional communication solution are: Contingency operational r
34、easons e.g. when trunked system is not operational due to fault or is overloaded and the access time cannot be guaranteed. Urban areas with limited coverage e.g. in-building, car parks and underground. Rural areas with no infrastructure. 4.2 General requirements The service requirements for DMO are
35、very similar to those valid for communication via the network. As in TMO also in DMO there is a need for both voice and data services and the communication should be robust, secure, flexible and frequency efficient. As in TMO, Group call is considered to be a very important feature in DMO. DMO commu
36、nication should be possible with the same radio that is used for communication in TMO. The maximum transmit power and antenna configuration to be used for DMO communication should be such that Health and Safety issues are avoided. 4.3 DMO variants First of all there is a need for DMO radio-to-radio
37、communication. This mode of operation is similar to conventional half duplex radio communication. ETSI ETSI TR 102 021-12 V1.1.1 (2012-08)8It is recognised that not all scenarios can be fulfilled with DMO radio-to-radio communication only. For situations where DMO radio-to-radio communication does n
38、ot provide the required operational range there is a need for the possibility for communicating via a repeater. A strategically positioned DMO repeater re-transmitting the information it receives can significantly extend the DMO range and improve communication reliability. For situations where DMO u
39、sers need to cooperate and communicate with colleagues on a TETRA network there is a need for a DMO gateway that re-transmits the information that is received on the DMO channel on the TETRA network and vice versa. A DMO gateway relieves DMO users operational isolation. In situations where the DMO o
40、peration and communication is primarily isolated, one or some of the team members may want to be reachable for colleagues on the TETRA network or vice versa. For these situations there is a need for a mode where the radio, while in DMO mode, also scans the TMO network for activity or vice versa. Thi
41、s mode is called Dual Watch operation. 4.4 Operational scenarios in more detail 4.4.1 Fire brigade on scene and in-building communication During their operations fire brigades often have to enter buildings to attack the fire. As in many Public Safety TETRA networks indoor coverage cannot be guarante
42、ed, the fire brigades in those networks operationally use Direct Mode Operation for their on-scene communications within the teams (see figure 1). The commanding officer is also in contact with the team commanders and the control room using TMO. Most of the on scene DMO communication is done as Dire
43、ct Mode radio-to-radio communications, in some cases the communication runs via a DMO repeater. Figure 1: Fire brigade on scene scenario Control room DMO 2 DMO 1 DMO 3 DMO 4 TMO ETSI ETSI TR 102 021-12 V1.1.1 (2012-08)94.4.2 Police covert and special operation Many of the operations of special polic
44、e teams largely benefit from a wide area network. Some of their operations cannot rely on network coverage. An example scenario is an arrest team entering a building to seize a dangerous suspect. Because part of the operation is indoor, where network coverage may be not available, DMO will be used f
45、or communication. Depending on the size of the operation and the building either DMO radio-to-radio is used or the communication is done via a DMO repeater. 5 Future of TETRA workshop 2007: New ideas and improvement areas 5.1 Future of TETRA workshop In the future of TETRA workshop of 2007 requireme
46、nts were gathered for DMO also. The outcome of the workshop was documented in i.1. As some of the respondents had some years of operational experience with DMO implementations while others had no operational experience with DMO yet, the workshop had an interesting mixture of results. On the one hand
47、 new ideas were gathered from current and future DMO users while on the other hand essential enhancement areas were identified by experienced DMO users. 5.2 New Ideas As can been seen in figure 2 that is extracted from clause 5.2 of i.1, the main interest of the total of respondents for DMO is in in
48、creased range performance, increased service reliability/availability, increased spectrum efficiency and increased data rate. DMO All respondentsIncreased spectrum efficiency13%Increased service reliability/availability9%Increased range performance20%Increased data rate9%Duplex voice & data4%Concurr
49、ent voice and data5%Increased service transparency between TMO and DMO7%Improved performance behaviour of gateways8%Improved performance behaviour of repeaters5%Multiple call support on gateways & gateway/repeaters5%Accessory Interface Standards3%Networking Capability5%Other DMO1%Application Programming Interface (API) standard6%Figure 2: All workshop respondents view on DMO enhancements ETSI ETSI TR 102 021-12 V1.1.1 (2012-08)105.3 Improvement areas 5+_Exp_Resp DMO Q20 5 10 15 20 25 30 35 40Other DMOImproved performance behaviour of repeatersConcurrent voic
