1、 ETSI TR 102 335-2 V1.1.1 (2004-11)Technical Report Electromagnetic compatibilityand Radio spectrum Matters (ERM);System reference document for harmonized use ofDigital Mobile Radio (DMR);Part 2: Systems operating under individual licences in theexisting land mobile service spectrum bandsETSI ETSI T
2、R 102 335-2 V1.1.1 (2004-11) 2 Reference DTR/ERM-RM-024-2 Keywords digital, mobile, PMR, radio, SRDOC, UHF 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
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8、I TR 102 335-2 V1.1.1 (2004-11) 3 Contents Intellectual Property Rights5 Foreword.5 1 Scope 6 2 References 6 3 Definitions, symbols and abbreviations .7 3.1 Definitions7 3.2 Symbols7 3.3 Abbreviations .7 4 Executive summary 8 4.1 Status of the present document.9 5 Technical issues9 5.1 Short backgro
9、und information9 5.1.1 System description9 5.1.2 Applications and interoperability9 5.2 Over the air protocol summary.10 6 Summary market information 11 6.1 Societal uses and enhanced benefit from digital technology11 6.2 Benefit to national GDP .11 6.3 Market size, forecasts, and timing12 6.4 Migra
10、tion of existing customers.13 7 Main conclusions13 7.1 Business importance.13 7.2 Expected timing for products to market .14 7.3 Requested ECC actions 14 Annex A: Detailed market information16 A.1 Range of interoperable applications, features, and facilities16 A.2 Market size and value.16 A.2.1 The
11、ECC strategic plan.16 A.2.2 Information from other sources 17 A.2.2.1 Population surveyed17 A.2.2.2 The findings18 A.2.2.2.1 Key basic features required.18 A.2.2.2.2 Key advanced features and facilities required.19 A.2.2.2.3 Migration propensity.19 A.2.2.2.4 Comments on current analogue radio usage2
12、0 A.3 Traffic evaluation .20 Annex B: Detailed technical description.21 B.1 General summary of the over-the air protocol .21 B.1.1 General summary of protocol.21 B.1.2 Signalling advantages.22 B.1.3 6,25 kHz equivalence .23 B.1.4 The vocoder23 B.1.5 Spectrum parameters 23 B.1.6 Radiated power and ra
13、nge 23 B.1.7 Frequency considerations .24 B.2 Technical justification for access to existing PMR spectrum bands 28 B.3 Information on existing and future ETSI standards .29 ETSI ETSI TR 102 335-2 V1.1.1 (2004-11) 4 Annex C: Expected compatibility issues.30 C.1 Coexistence studies (if any) .30 C.2 Cu
14、rrent ITU allocations30 C.3 Sharing issues.30 History 31 ETSI ETSI TR 102 335-2 V1.1.1 (2004-11) 5 Intellectual 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 avai
15、lable 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 serv
16、er (http:/webapp.etsi.org/IPR/home.asp). 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
17、, or may become, essential to the present document. Foreword This Technical Report (TR) has been produced by ETSI Technical Committee Electromagnetic compatibility and Radio spectrum Matters (ERM). The present document is part 2 of a multi-part deliverable covering the Electromagnetic compatibility
18、and Radio spectrum Matters (ERM); System reference document for harmonized use of Digital Mobile Radio (DMR), as identified below: Part 1: “Tier 1 DMR#, expected to be for general authorization with no individual rights operation“; Part 2: “Systems operating under individual licences in the existing
19、 land mobile service spectrum bands“. Part 1 covers DMR for general-authorization-with-no-individual-rights operation in the 406,1 MHz to 410 MHz or 440 MHz to 450 MHz simplex frequency bands. Part 2 covers professional market applications offering peer-to-peer mode, conventional and simulcast conve
20、ntional repeater modes and trunked (single or multi-channel for single or multi-site) and simulcast trunked operation within the existing land mobile service frequency bands. ETSI ETSI TR 102 335-2 V1.1.1 (2004-11) 6 1 Scope The present document contains functional requirements for individually lice
21、nsed Digital Mobile Radio (DMR) operating in the existing licensed land mobile service frequency bands as identified in CEPT ECC/DEC/(02)03 2 and T/R 25-08 3. It also proposes terms to facilitate sharing these bands with existing land mobile services and describes expected market information and com
22、patibility issues. The primary market to be addressed is that served by current land mobile services. This market is considered to fall into three basic tiers of usage. Other standards already exist that provide more sophisticated suites of services and facilities than are proposed to be supported b
23、y DMR. In the present document the segments considered are: Tier 2: For the professional market offering peer-to-peer mode and repeater mode (expected to be licensed); Tier 3: Trunked or Simulcast operation (expected to be licensed). The tier 1 usage is covered in part 1 of TR 102 335 9. It is to no
24、te that tier 2 products can also encompass simulcast as well as non-simulcast usage. The present document describes a protocol that has been specifically developed with the intention of being suitable for all identified market tiers. Specifically, in this case for use in the existing land mobile ser
25、vice bands with the intention of causing minimum change to the spectrum planning and regulations. Thus the proposed DMR protocol is intended to be applicable to the current bands, channel raster, range assumptions and all other spectrum parameters without need for change. The protocol also supports
26、significant feature and facility enhancements, which are believed to be necessary to enable the future users to obtain the most benefit from the DMR service. This is detailed further in annex B. It includes necessary information to support the co-operation between ETSI and the Electronic Communicati
27、ons Committee (ECC) of the European Conference of Post and Telecommunications administrations (CEPT), including: Market information (annex A); Technical information (annex B); Expected compatibility issues (annex C). 2 References For the purposes of this Technical Report (TR) the following reference
28、s apply: 1 ETSI EN 300 113 (parts 1 and 2): “Electromagnetic compatibility and Radio spectrum Matters (ERM); Land mobile service; Radio equipment intended for the transmission of data (and/or speech) using constant or non-constant envelope modulation and having an antenna connector“. 2 ECC/DEC/(02)0
29、3: “ECC decision of 15 March 2002 on the availability of frequency bands for the introduction of Narrow Band Digital Land Mobile PMR/PAMR in the 400 MHz band“. 3 CEPT Recommendation T/R 25-08: “Planning criteria and coordination of frequencies in the land mobile service in the range 29,7 to 960 MHz“
30、. 4 CEPT WG FM PT 38 progress report, 18th meeting in Tallinn, 2-3 June 2004, Annex 1 T/R 25-08: “Recommended spacing, use and location of upper, lower and simplex bands“. 5 UK Radiocommunications Agency: “The Economic Impact of Radio“. 6 ETSI EG 201 212: “Electrical safety; Classification of interf
31、aces for equipment to be connected to telecommunication networks“. ETSI ETSI TR 102 335-2 V1.1.1 (2004-11) 7 7 ETSI EN 300 390-2: “Electromagnetic compatibility and Radio spectrum Matters (ERM); Land Mobile Service; Radio equipment intended for the transmission of data (and speech) and using an inte
32、gral antenna; Part 2: Harmonized EN covering essential requirements under article 3.2 of the R System reference document for harmonized use of Digital Mobile Radio (DMR); Part 1: Tier 1 DMR#, expected to be for general authorization with no individual rights operation“. 10 ERC Report 25: “The Europe
33、an table of frequency allocations and utilizations covering the frequency range 9 kHz to 275 GHz“. 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: duty cycle: total transmitter on time within one hour peer-
34、to-peer: a communication technique where any radio unit may communicate with one or more other radio units without the need for any additional equipment (e.g. repeater) polite protocol: a medium access protocol that implements a “listen before transmit“ protocol in order to ensure that the channel i
35、s free before transmitting 3.2 Symbols For the purposes of the present document, the following symbols apply: dBp decibels of power Eb Energy per bit No Noise per Hz 3.3 Abbreviations For the purposes of the present document, the following abbreviations apply: 4FSK Four-level Frequency Shift Key CAC
36、H Common Announcement Channel CC Colour Code CEPT European Conference of Post and Telecommunications Administrations CTCSS Continuous Tone Controlled Squelch System DECT Digital Enhanced Cordless Telecommunications DMR Digital Mobile Radio ECA European Common Allocations table ECC Electronic Communi
37、cations Committee EICTA European Information and Communications Technology Association EMB Embedded Signalling Field ERC European Radiocommunications Committee GDP Gross Domestic Product GPRS Global Package Radio System GPS Global Positioning SystemGSM Global System for Mobile communication GSM-R Gl
38、obal System for Mobile communication for Railways applications ITU International Telecommunications Union ETSI ETSI TR 102 335-2 V1.1.1 (2004-11) 8 LC Link Control PAMR Public Access Mobile Radio PBX Private Branch eXchange PDA Personal Digital Assistant PMR Private Mobile Radio PSTN Public Switched
39、 Telecommunications Network R 2) the digital equipment will be better integrated into the operational system of the organizations and so the per-unit traffic generated will increase both in terms of the number of calls and also the nature of the calls. These effects need to be considered carefully a
40、nd the utilization of the spectrum carefully monitored to check that undue congestion is not occurring over time. At this time there is insufficient information available to provide a set of utilization input assumptions. Therefore a mathematical prediction of traffic trends is not presented. As mor
41、e experience is gained it is expected that this will be possible to do in a meaningful way. At this time, there is no perceived need for additional spectrum over and above the existing PMR bands. ETSI ETSI TR 102 335-2 V1.1.1 (2004-11) 21Annex B: Detailed technical description B.1 General summary of
42、 the over-the air protocol B.1.1 General summary of protocol The protocol proposed for DMR is built around a 30 ms slot structure with a 50 % duty cycle. This allows sufficient transmitted data in one direction to support both good quality voice and a very substantial level of signalling. In the spa
43、ces between the transmitted blocks the protocol calls for the unit to be receiving. This therefore allows signalling and/or voice in the reverse direction even during a conversation. The perception of the user will be that this unit is providing a full duplex conversation. This protocol therefore su
44、pports duplex in either the repeater, simulcast, trunked or peer-to-peer modes. Specific requirements on system delays needed for simulcast architectures are taken into account. Figure B.1.1.1 provides the general organization. The protocol calls for means to synchronize the transmitter and the rece
45、iver states at each end of the conversation such that one always receives at time when the other is permitted to transmit. The proposed solution is a 2-slot TDMA channel for both the inbound and outbound channels. A generalized timing diagram of exchanges between subscribers and the fixed end equipm
46、ent is shown in figure B.1.1.1 where the slots for the two TDMA channels are labelled channel “1“ and “2“. Inbound signalling is labelled “MS TX“ and outbound signalling is labelled “Repeater TX“. This diagram is intended to illustrate a number of signalling features and timing relationships and doe
47、s not represent a particular scenario. Key points illustrated by this diagram include: While active, the outbound channel is continuously transmitted (see note), even if there is no information to send. Each of the inbound channels is unused if there is no information to transmit. NOTE: The protocol
48、 allows that the transmissions may cease under some circumstances such as after a determined period of inactivity. The inbound channel has an unused guard band between bursts to allow for synthesizer lock and PA settling. The outbound channel has a Common Announcement CHannel (CACH) between bursts f
49、or channel management (framing and access) as well as low speed signalling. The channel 1 and 2 bursts in the inbound channel are offset in time from the channel 1 and 2 bursts in the outbound channel. This number scheme allows a single channel identifier field in the outbound CACH to refer to the same channel number on the inbound (channel usage) and outbound (channel number). Bursts have either a synchronization pattern or an embedded signalling field located in the centre of the burst. Placing the embedded signalling in the middle of
