1、 ETSI TR 102 513 V1.1.1 (2006-12)Technical Report Terrestrial Trunked Radio (TETRA);Feasibility Study into the Implications of OperatingPublic Safety Sector (PSS) TEDS using the proposed“Tuning Range“ concept in the 410 MHz to 430 MHz and450 MHz to 470 MHz frequency bandsETSI ETSI TR 102 513 V1.1.1
2、(2006-12) 2 Reference DTR/TETRA-000175 Keywords TETRA, 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 Imp
3、ortant notice Individual copies of the present document can be downloaded from: http:/www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is t
4、he Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Inf
5、ormation on the current status of this and other ETSI documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http:/portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No
6、part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2006. All rights reserved. DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the ben
7、efit of its Members. TIPHONTMand the TIPHON logo are Trade Marks currently being registered by ETSI for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. ETSI ETSI TR 102 513 V1.1.1 (2006-12) 3 Contents Intel
8、lectual Property Rights5 Foreword.5 Introduction 5 1 Scope 6 2 References 6 3 Abbreviations .6 4 Feasibility study introduction and summary 7 5 Frequency spectrum considerations .7 5.1 General .7 5.2 TETRA base station frequency spectrum considerations .8 5.3 TETRA radio terminal radio spectrum cons
9、iderations .8 6 Implications on use of wideband mobile stations covering 380 MHz to 470 MHz .9 6.1 General .9 6.2 RF PA linearity.9 6.3 RF Wideband Noise .9 6.4 Switching time between TETRA V+D and TEDS channels 10 6.5 Conclusions 10 6.6 Recommendations 10 7 Mobile station antenna implications.10 7.
10、1 General .10 7.2 Conclusions 11 8 Base station antenna implications 11 8.1 General .11 8.2 Conclusions 12 9 Implications of transmitter combining and receiver splitting systems at TETRA base station sites .12 9.1 General .12 9.2 TETRA V+D with a single 50 kHz TEDS channel13 9.3 Conclusions 15 10 Se
11、curity implications of public safety sharing frequency bands used by non-public safety users.16 11 TEDS channel bandwidth assignment implications.16 11.1 General .16 11.2 Conclusion17 12 Spectrum efficiency implications of TETRA V+D and TEDS in the same frequency band versus TETRA V+D and TEDS in se
12、parate frequency bands.17 12.1 General .17 12.2 Guard band requirements .18 12.3 Radio frequency planning constraints 18 12.4 Conclusion20 13 Propagation and coverage implications of the control channels and TEDS channels being in different frequency bands.20 13.1 General .20 13.2 Path loss differen
13、ces.20 13.3 Wavelength differences21 13.4 Conclusion21 14. Implications of two antenna system working at base station sites .21 14.1 General .21 14.2 Additional cost .21 ETSI ETSI TR 102 513 V1.1.1 (2006-12) 4 14.3 Additional space, weight and wind loading on radio masts .21 14.4 Difference in RF co
14、verage characteristics22 14.5 Environmental impact 22 14.6 Conclusions 22 15. Alternative solutions.22 15.1 General .22 15.1.1 Split band: solution 1 22 15.1.2 Single band: solution 2 .23 15.2 Conclusions 23 16. Overall conclusions23 17. Recommendations 24 Annex A: Antenna performance specifications
15、 .25 A.1 General .25 A.2 VSWR 25 A.3 Conclusions 26 Annex B: Bibliography27 History 28 ETSI ETSI TR 102 513 V1.1.1 (2006-12) 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 IP
16、Rs, 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. Latest updates are av
17、ailable on the ETSI Web server (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
18、server) which are, or may be, or may become, essential to the present document. Foreword This Technical Report (TR) has been produced by ETSI Technical Committee Terrestrial Trunked Radio (TETRA). Introduction The present document looks at the feasibility of operating a Public Safety Sector (PSS) TE
19、TRA V+D network in the 380 MHz to 385 MHz/390 MHz to 395 MHz band with TETRA Enhanced Data Service (TEDS) operating in either the 410 MHz to 430 MHz band or the 450 MHz to 470 MHz band. The need for this feasibility study occurred as a result of a Liaison Statement (LS) document FM38(2006), FM38 (20
20、06)25 1 for ETSI TC TETRA to consider the feasibility of a “tuning range“ concept to accommodate PSS TEDS in the 410 MHz to 430 MHz band or the 450 MHz to 470 MHz band if frequency spectrum could not be made available in the preferred 385 MHz to 390 MHz/395 MHz to 399,9 MHz band. NOTE: Insufficient
21、spectrum is available in the 380 MHz to 385 MHz/390 MHz to 395 MHz band to support TEDS. The “tuning range“ concept was also proposed because no common blocks of spectrum could be identified in the 410 MHz to 430 MHz and 450 MHz to 470 MHz bands across the CEPT region. ETSI ETSI TR 102 513 V1.1.1 (2
22、006-12) 6 1 Scope The present document considers possible implications covering the following areas: Frequency Spectrum Considerations. Implications on use of wideband terminals covering 380 MHz to 470 MHz. Radio terminal antenna implications. Base station antenna implications. Implications of trans
23、mitter combining and receiver splitting systems at TETRA base station sites. Security implications of Public Safety sharing frequency bands used by non-public safety users. TEDS channel bandwidth assignment implications. Spectrum efficiency implications of TETRA V+D and TEDS in the same band versus
24、TETRA V+D and TEDS in separate bands. Propagation and coverage implications of the control channels and TEDS channels being in different frequency bands. Implications of Two Antenna System Working at Base Station Sites. Alternative Solutions. 2 References For the purposes of this Technical Report (T
25、R) the following references apply: NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee their long term validity. 1 FM38(2006)25: “Liaison Statement (LS) from FM PT38 to ETSI ERM-RM regarding information to be contained in an SRDoc“. 3 Abbrev
26、iations For the purposes of the present document, the following abbreviations apply: ACP Adjacent Channel Power C/I Carrier to Interference CDMA Code Division Multiple Access CEPT Conference Europenne des Administrations des Postes et des Tlcommunications DC Direct Current DMO Direct Mode Operation
27、ECC Electronic Communications Committee (of the CEPT) FDMA Frequency Division Multiple Access FM PT38 WG FM Project Team on PMR FM Frequency Modulation FSL Free Space Loss GoS Grade of Service MS Mobile Station PA Power AmplifierPMR Private Mobile Radio PPDR Public Protection and Disaster Relief PSS
28、 Public Safety Sector ETSI ETSI TR 102 513 V1.1.1 (2006-12) 7 QAM Quadrature Amplitude Modulation RF Radio Frequency Rx Receive(r) TEDS TETRA Enhanced Data Service TETRA Terrestrial Trunked RAdio Tx Transmit(ter) V+D Voice plus Data VCO Voltage Controlled Oscillator VSWR Voltage Standing Wave Ratio
29、W Watts WGFM Working Group Frequency Management 4 Feasibility study introduction and summary The present document looks at the feasibility of using a “tuning range“ concept of operating a Public Safety Sector (PSS) TETRA Enhanced Data Service (TEDS) in either the 410 MHz to 430 MHz band or the 450 M
30、Hz to 470 MHz band if frequency spectrum could not be made available in the preferred 385,0 MHz to 390,0 MHz/395,0 MHz to 399,9 MHz band. In carrying out this feasibility study and analysing its findings a number of conclusions and recommendations have been made, the most significant recommendation
31、being that CEPT ECC WGFM should continue exploring the possibility of assigning adequate frequency spectrum from the 385,0 MHz to 390,0 MHz/395,0 MHz to 400,0 MHz band to accommodate TEDS, as it has been concluded that the single frequency band solution is the most cost effective and practical solut
32、ion that meets the needs of existing PSS users of TETRA V+D wishing to upgrade to TEDS. The main factor that resulted in this recommendation was that the most common base station antenna (high gain collinear) used in TETRA by PPS organizations was limited to a RF bandwidth of 32 MHz, which was insuf
33、ficient to accommodate TETRA V+D and TEDS in the 410 MHz to 430 MHz band or the 450 MHz to 470 MHz band operating on an antenna system comprising one transmit (Tx) antenna and one receive (Rx) antenna (1 x Tx and 1 x Rx). As a consequence both existing TETRA networks and new TETRA networks with TEDS
34、 would require two antenna systems (2 x Tx and 2 x Rx) at each base station site, which for cost and practical reasons is not considered acceptable. However, this feasibility study did identify the possibility of using a split band operation solution, which is considered acceptable for new TETRA use
35、rs but not suitable for existing PSS users of TETRA wishing to upgrade to TEDS. To remove the need for two independent antenna systems at each TETRA base station site a decision is made during the network planning phase to assign chosen base stations sites to operate in either the 380 MHz to 385/390
36、 MHz to 395 MHz band or the 410 MHz to 430 MHz band NOTE: Assumes radio terminals can operate across 380 MHz to 430 MHz with acceptable degradation but not 380 MHz to 470 MHz. This solution means that each base station site will only need one antenna system (1 x Tx and 1 x Rx). However, this solutio
37、n does create a number of problems, details of which are provided in clause 15. 5 Frequency spectrum considerations 5.1 General As mentioned in the Introduction, the “Tuning Range“ concept was also proposed because no common blocks of spectrum could be identified in the 410 MHz to 430 MHz and 450 MH
38、z to 470 MHz bands across the CEPT region. This means that TEDS if deployed in these bands could be allocated frequency spectrum anywhere within these bands. To determine the maximum and minimum frequency bandwidth requirements for transmitters and receivers at TETRA base station sites and for TETRA
39、 radio terminals, the frequency band allocations shown in figure 1 were used along with the minimum frequency spectrum requirement for TEDS. ETSI ETSI TR 102 513 V1.1.1 (2006-12) 8 380 390 400 410 420 430 450 460 470 440 MHz Base Tx Base Rx KEY Not Allocated 10 40 80 Figure 1: 380 MHz to 470 MHz fre
40、quency spectrum chart showing base station transmitter and receiver bands with maximum spectrum indicated for base station transmitters For the purpose of calculation a minimum frequency bandwidth requirement used for TEDS is 2 x 1,05 MHz, this being the minimum requirement for wide area multiple si
41、te TEDS using 50 kHz RF bandwidth channels and a frequency re-use pattern of 21 (0,05 x 21 = 1,05). However, because TEDS could be assigned spectrum in any part of the 410 MHz to 430 MHz band and the 450 MHz to 470 MHz band, this study assumes that radio equipment switching bandwidths (tuning range)
42、 will be across the whole of these bands as designated for transmitter and receiver operation. Because TEDS data channels are managed by the control channel of the TETRA V+D network, base station transmitter combining and receiver splitting systems as well as handportable and mobile radio terminals
43、need to have wide RF bandwidth operation. For example, TETRA V+D will be operating in the 380 MHz to 385 MHz/390 MHz to 395 MHz band with TEDS operating somewhere in either the 410 MHz to 430 MHz band or the 450 MHz to 470 MHz band. Again, this fact will need to be taken into consideration for the p
44、urpose of calculation. 5.2 TETRA base station frequency spectrum considerations As a consequence of no common spectrum blocks, the maximum frequency switching bandwidth for TETRA V+D and TEDS base station transmitters and receivers can be seen in table 1, which were derived from the frequency spectr
45、um chart in figure 1. Table 1: Maximum base station transmitter and receiver RF bandwidths Tx Frequency Band (MHz) Rx Frequency Band (MHz) Lower Limit (MHz) Upper Limit (MHz) Lower Limit (MHz) Upper Limit (MHz) Maximum Tx Bandwidth (MHz) Maximum Rx Bandwidth (MHz) 390 400 380 390 10,0 10,0 390 430 3
46、80 420 40,0 40,0 390 470 380 460 80,0 80,0 5.3 TETRA radio terminal radio spectrum considerations Because TETRA V+D radio terminals on PSS networks are always provisioned with single frequency Direct Mode Operation (DMO) channels, their transmitters and receivers are designed to operate across the w
47、hole of the 380 MHz to 400 MHz band to allow DMO use of either base station transmit or receiver frequencies when permitted. Even though DMO assignments are usually in the lower part of the frequency band this wideband DMO capability provides additional flexibility for frequency planning, especially
48、 on new networks. ETSI ETSI TR 102 513 V1.1.1 (2006-12) 9 This requirement means that TETRA V+D radio terminals provisioned with TEDS need additional RF bandwidth capability compared with base station site equipment. Even though TEDS, only radio terminals would not have DMO, every TETRA PSS Network
49、would always have nationwide deployment of TETRA V+D and TEDS radio terminals. Taking these factors into consideration the maximum switching bandwidth requirements for radio terminal transmitters and receivers is provided in table 2. Table 2: Maximum radio terminal transmitter and receiver RF bandwidths Tx Frequency Band (MHz) Rx Frequency Band (MHz) Lower Limit (MHz) Upper Limit (MHz) Lower Limit (MHz) Upper Limit (MHz) Maximum Tx Bandwidth (MHz) Maximum Rx Bandwidth (MHz) 380 400 380 400 20,0 20,0 380 430 380 420 50,0 40,0 380 470 380 460 90,0 80
