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1. red channels are shown in the lower panel The results of interference calculations to and from the existing station and level of field strength above the maximum permitted interference level are given 31 7 Interference P 452 FX2FX Interference from the Wanted Hop to the Selected Hop s xj Wanted Hop Tx TxHame TxLocation RxHame RxLocation Freq MHz FX Test 1 037E3630 113300 Fx Test2 038E5330 115730 450 1000 Selected Hop s Rx TxHame TxLocation RxHame RxLocation IntDist km PathLoss dB I S dB Fx Test 4 038E5400 12H0900 Fx Test 3 038E1030 12N1900 105 125 96 Display Links on DEM Fixed stations with receivers associated as point to point hops Figure 7 1 Interference Calculation for Links Fixed and displayed on the DEM link interference FX2FX Link calculation result In accordance with ITU R Recommendation P 452 Takes into antenna directional beamwidth and cross polar discrimination and transmitter receiver Net Filter Discrimination NFD GEB4 Interference from wanted station to selected stations VWenled Station pofon ime a rreren 092000700 CARDADA ul 37 600000 Irterterance to No AssigniD ountry EsifdBu Zm EufdB Vm Eref dBuV m E u EreffdBuV 7m 1 102004012 GRODNO 49 297873 63 56114 12 745856 2 102008669 KLAIPEDA 42 631613 63 775866 12 531134 3 104002384 BIRZAI 51 037857 64 399697 11 907303 4 084004533 KHOURIBGA 41 4
2. Regional Agreements e Analogue Sound Broadcasting GE84 Agreement e Analogue Television ST61 GE89 and GE06 Agreements 15 e Digital Sound Broadcasting GE06 Agreement e Digital Television Broadcasting GE06 Agreement Fixed and Land Mobile services e Bi lateral and Multi lateral Co ordination Agreements Earth station coordination e RR Appendix 7 procedure Broadcasting service co ordination includes interference analysis and frequency co ordination tools between Broadcasting Services and between Broadcasting Services and some of the other services Fixed and Land Mobile only sharing the frequency bands in the ST61 GE84 GE89 and GE06 Agreements Interference analysis methods are in conformity with the relevant requirements of the Agreements ST61 Co ordination for the few remaining frequency bands still subject to ST61 co ordination BC BT 2 BC BT calculates the co ordination distance of a wanted VHF sound or TV broadcasting station to the nearest point on the border of neighboring countries which are in ST61 plan Rev 2006 GE89 Co ordination for the few remaining frequency bands still subject to GE89 co ordination there are several tools to identify stations in neighbouring countries that maybe affected by a wanted TV BT station Television BT2BT co ordination distance Fixed BT2FX field strength Land Mobile BT2LM field strength Also Fixed and Land Mobile stations that may affect a TV station FX LM 2BT fie
3. on Google Earth map Point to point link budget calculation using recommendation ITU P 530 Frequency Allocation Chart and Footnotes National Allocation Chart Allocation Chart sub band editor Footnote Editor Reference Tables and Libraries Channel arrangement editor Equipment Library Transmitter emission mask and editor Antenna Library Antenna pattern editor Administration and Licensing Data entry screen DEM Add Station toolbar button Administrative Data screen 1 In left pane Hierarchical Tree display for Anonymous stations at Station level showing sub level 1 Equipment Sub level 2 Frequency Antenna Sub level 3 Receiver In right pane Station information data entry mask 21 5 3 6 1 7 1 7 2 8 1 8 2 8 3 10 10 1 10 2 10 3 Administrative Data screen 2 In left pane hierarchical Tree display for Active Licenses at Owner level showing sub level 1 Licenses sub level 2 Billing History Stations sub level 3 Equipment sub level 4 Frequency Antenna Sub level 5 Receiver In right pane Owner information data entry mask Frequency assignment Frequency Assignment Procedure Results spreadsheet Interference calculation Example Interference calculation 1 Point to point link interference FX2FX Link Example interference calculation 2 Interference from a Broadcasting station to selected stations in accordance with the GE84 Agreement Frequency Coordination
4. server edition or Windows XP server Other software All configurations will require e Microsoft Office version 2000 or later e Adobe Acrobat PDF reader version 6 or later e Google Earth software Also it is highly recommended that the ITU BR International Frequency Information Circular BR IFIC for Terrestrial and Space Services is installed on the workstation or the network prior to installation of SMS4DC BR IFIC will be essential for frequency co ordination procedures Also a considerable amount of time can be saved by using the import function to transfer information from BR IFIC into the SMS4DC database for example the broadcasting assignments and allotments from the GE84 and GE06 Plans Internet access It is further recommended that an internet connection is available to obtain up to date information from the ITU website and to enable the interface to Google Earth 2 2 National legal and regulatory framework As emphasised in the introduction it is essential that a national legal and regulatory framework is in place so that the Administration or spectrum management agency has the legal authority to manage the spectrum and radiocommunication services for which SMS4DC will be used to assist in frequency assignment The ITU R Handbook on National Spectrum Management provides guidance to Administrations on all aspects of spectrum management Briefly management includes the authority to assign frequencies to specify technica
5. so that they may be seen as overlays on the Google Earth mapping system 5 Propagation tools 5 1 Overview Propagation modeling is an essential frequency management tool that provides the engineer with the ability to predict the path loss between point to point link stations or the effective coverage interference area of broadcast or land mobile transmitters Although a limited application of propagation models is possible using manual methods computer methods are needed for practical applications such as constructing field strength contours transmitter network interference estimation and using terrain height information Furthermore computer modeling permits the results to be displayed as contour lines or colour scale images on high resolution maps Several well known propagation models including ITU R classics such as those specified in regulatory agreements have been implemented in SMS4DC Two main types of model for predicting propagation are required those for point to point systems e g fixed services and those for point to area systems e g land mobile or 10 broadcasting services Some models can be used for both types All propagation models are designed to enable different values of parameters to be used to take account of differences in the particular path or area under examination and SMS4DC includes various pop up menu boxes to enable the engineer to enter the appropriate values Of course the engineer must have
6. whose broadcasting service is likely to be affected Left hand screenshot shows this result exported to Google Earth EE lt i Name TUR RN ARM 8085MH2 Sewies IM noas Counties ARMIRN TUR ea Model 2 x Cancel Propagation models Remise o mi w A E e a E LoFreq MHz HiFreq MHz PrefCountries PIFS dBuin Xkmikm ERP dBYY Emergency Preferential Countries Figure 8 2 Border coordination agreement example for the Land Mobile service between three administrations SMS4DC set up screen The example shows a border coordination agreement for the band 80 86 MHz Three sub bands are established one for each country giving preferential assignment rights The limits of the preferential rights are 20 dbuV m measured at 15 km across the border For coordination of receivers a reference transmitter with e r p of 17 dBW is used 33 Eladministrative data LASS Administrative data CA Anonymous Stal B 00 Active Licenses Figure 8 3 Generation of an electronic notice from the License L1G License a0 w OE License O B archived Licens Mouse right click at CPR Owner yero1 1 0001 LHS Biling History gt lt Delete OA Go tions Modify New Equipment Date ofnotice 20090203 7 station level opens menu Choosing Acton aod a electronic notice opens
7. 2 12 4 2 GE06 Interference From sub menu of DEM view Frequency Co ordination Fixed and Mobile services Bilateral and multilateral agreements 3 4 2 12 Coordination menu of DEM view 3 4 2 12 5 Agreement item in Coordination menu of DEM view Frequency Co ordination Earth stations RR Appendix 7 3 3 1 1 RR Appendix 7 item in Option menu 3 4 2 12 6 Border coordination item in Coordination menu of DEM view Frequency Co ordination ITU notification 6 17 Production of BR electronic notices Frequency Co ordination Importing data from BR IFIC and the Space Radiocommunication Stations SRS on DVD ROM 6 8 Importing information published by ITU BR 38 Description of task or sub task SMS4DC User Manual Reference Administrative database and Licensing System 3 4 2 8 Database menu of DEM view 4 1 Hierarchical administrative levels 4 2 The level of Administrative Data 4 2 1 Context menu in the level of Administrative Data 6 18 Customization of SMS4DC Data entry Owner 4 3 The level of Owner 4 3 1 Context menu in the level of Owner Data entry License 4 4 The level of License 4 4 1 Context menu in the level of License Data entry Earth Stations 4 5 The level of Earth Station 4 5 1 Context menu in the level of Earth Station 4 6 The level of Beam 4 6 1 Context menu in the level of Beam 4 7 The level of Group 4 7 1 Context menu in the level of G
8. 3 19 59 04 23 20 00 30 23 20 02 09 23 20 03 23 23 20 05 06 Update anter Update anter Update anter Update anter f Update anter 23 20 35 18 Assign Anter 23 20 35 31 Update anter 23 20 36 39 Update anter 23 20 38 03 Update anter 23 20 41 30 Assign Anter 23 20 43 07 Assign Anter 23 20 43 1 4 Update anter 23 20 49 39 Assign Anter 23 20 49 57 Update anter 23 21 14 32 Update broac 23 21 14 48 Update broac 23 20 06 43 23 20 08 24 121 Figure 10 2 Audit Trail This displays a log of SMS4DC activity action taken time and the user responsible for the action The System Supervisor can define the search on the following items user name action type and the database table of interest Access Levet z 68 68 Antenna 28 Antenna 73 Antenna 73 Antenna 119 AntDiag 73 Antenna 73 Antenna 73 Antenna 120 AntDiag 73 Antenna 122 AntDiag 73 Antenna 53 BCStation 54 BCStation 1 Data entry licenseing amp billing 2 Engineers tools 3 Senior operator Dele Antenna AntDiag Figure 10 3 Database back up and restoration The System Supervisor should make regular back ups of the database using the back up facility The back up should be kept in a secure location well away from the SMS4DC server The back up may be used to restore the database by copying the back up file into the SMS4DC DB folder and changing the name of it to the original databas
9. 95063 44 877429 i 31 429571 5 094025497 ZARZIS 15 102618 60 044737 G 094033596 AFLOU 3147353 59 799120 Z 084004713 ZAID gt 1 497805 65 626721 3U B 084102625 AG ISIDOROS 7 362263 67 676879 8 630171 9 084033230 KEF EL AKHAL 26 006367 59 1100321 3 17 206679 40 084102452 CAIRETHIANA 2 A4R6E7 39 466676 23 159676 11 084009123 MARBELLA 36 249154 76 904415 0 597415 12 084102421 NEDOUSA 7 788932 10 337845 25 030845 Figure 7 2 Interference from a Broadcasting station to selected stations in accordance with the GE84 Agreement Calculation of the nuisance field strength of a selected FM sound broadcasting station at the location of other GE84 FM sound broadcasting stations inside a circular area Results displayed in spreadsheet and html report country code the field strength produced by wanted station Esi the aggregate field strength value Eu of all stations including wanted station reference usable field strength value Eref and the value in excess of the reference usable field strength value Eu Eref 32 8 Frequency Coordination Figure 8 1 GE06 RE FXLM2BCBT Affected Admin Identification of Administrations whose broadcasting service is likely potentially to be affected by a wanted station in fixed or land mobile service inside another country Right hand screenshot shows the coordination contour for the wanted FX station crossing the border of an administration
10. GE06 Agreement FXLM2BCBT Affected Administrations Identification of Administrations whose broadcasting service is likely potentially to be affected by a wanted station in fixed or land mobile service inside another country Border coordination agreement example for the Land Mobile service between three administrations Generation of an electronic notification of a frequency assignment for submission to the ITU Radiocommunication Bureau ITU BR Import from BR IFIC or from SRS BR IFIC and SRS data import interface with filters to specify what information to import e g administration frequency band service System security User IDs passwords and access levels Audit trail Database back up and restoration 22 1 Graphic Information System Figure 1 1 International Digital World Map IDWM e ITU Regions e Country borders e Coast lines e Islands e Lakes e Propagation zones as defined in the Regional Agreements ST61 GE84 GE89 GE2006 iE SMS4DC IDWM Map2 E Fie Edt view Window Help Option Vectors PELE 2 6 Country Region Sea Code latin 73 47 10 534 Lon E 028 35 17 647 Region 1 Admin Code Coastal Zone Cold Sea P 22 14 37 Figure 1 2 The Digital Elevation Map DEM The Digital Elevation Model DEM installed in SMS4DC is the Global Land One kilometer Base Elevation model GLOBE This screenshot has a topographical colour scale and shows th
11. Hz location of the bands 1 550 1 559 MHz 1 610 1 645 5 MHz and 1 646 5 1 660 MHz to the fixed service on a primary basis is limited to the existing fixed stations No more frequency will be igned to the new fixed stations within these bands Figure 3 1 Draw Frequency Allocation Chart Example of a National Chart for 1500 1600 MHz showing a National Footnote BP T BDT_SOFT SMS4DC DB SMS New ITU_PLAN_R4 Frequency Band MHz 1550 1559 Band Footnote s ICIVIL 5 341 5 351 5 353A 5 354 5 356 5 357 5 357A p Primary Services Figure 3 2 National Frequency Allocation Chart sub band editor Region National Service Name Service Footnote s A jsgcuo O OSS E METEOROLOGICAL SATELLITE spacetoEath OOOO O Baasa ooo E E The editor enables national sub zi E m E bands to be created for specific E service and with Primary or We Joo Secondary category of service mai aI 4 rs es H 4 status E1 Figure 3 3 ff National Footnote Editor National Frequency Footnote No auio Allocation Chart national Footnote Tet Allocation of the bands 1 550 1 559 MHz 1 610 1 645 5 MHz and 1 646 5 1 660 MH footnote editor to ihe fixed Sie al primary basis is finited to the misting fed stations No more frequency will be assigned to the new fixed stations within these bands The editor enables National Footnotes to be created modif
12. IRND8437 148 IRND8467 149 IRNDS437 150 IRNDS487 157 CHEFCHAOU 193 000000186 158 0UAZZAN 311 ALES8603_80 194 000000186 L T T S lt T T IT I Z T gt 5 I z z lt x lt lt Figure 4 5 Antenna pattern editor Enables horizontal and vertical antenna gain patterns to be entered and stored Antenna patterns and azimuth direction are used in interference calculations e g point to point link analysis The editor can be accessed from the DEM Tools menu FF Antenna H plane Pattern Propet opeet Name ALE8603_806 Frequency Band gg B34 MHz Beamwidth_E deg 70 8 Polarization F Gain dBi 13 3 BeamWidth_Hidea 16 2 p Patten Data 000 o0 002 jot 004 005 006 007 008 003 mo on m2 013 014 ms me 07 ma mmm i a00 o oo 0 000 go Ain E g AnH B SetAltoValue 0 Omni Clear Les f 28 5 Administration and Licensing Figure 5 1 Data Entry Screen for a New Station This screen is displayed by selecting the Add Station button on the DEM Tool Bar This example is for a Broadcasting sound station However Service Type and Class of Station fields have drop down menus to choose different services and classes Once the data entry is complete and the Save button is pushed a station symbol is displayed on the DEM at the location given by the Latitude and Longitude v
13. J Resubmission no x pop up to specify notice PubicaionNea a details date action ema etc 9 Import data from BR IFIC or SRS Figure 9 1 IFIC import Import from BR IFIC or from SRS Information can be imported from the ITU International Frequency Information Circular BR IFIC and the Space Radiocommunications Stations SRS on DVD ROM The import interface has filters which enable the required data to be specified In this example Service FM TV Administration SUI frequency band 88 108 MHz Class BC sound Fragment GE84 p Service M FMsTv I GEOG ES oR sul Import Remove F E M SWN l Clear T XM SWZ xj Close Frequency conditions F Assigned frequency F gt 88 000000 MHz and F lt 108 000000 MHz Fle ss MHz gt F2 108 MHz 7 a Add gt lt Remove m Class of Station Fragment Assign ID BC Broadcasting station sound x Geneva 1984 x Geneva 1984 lt lt Remove a y Clear 34 10 System security Figure 10 1 User IDs passwords and access levels New o Modify e The User authorization screen enables the System Supervisor to set up a new user with user User Password password User Password User Name Newt ser User Name name ID password and set access permission to the SMS4DC database and functions to one of six levels 2
14. Ja Broadcasting Stations Height ASL Daa Allotments e H O Active Licenses a O B archived Licenses Provision Area of Trans Network ID Figure 5 2 Administrative data screen 1 Anonymous Stations In the left panel the hierarchical tree structure showing Anonymous stations and an example expanded display for a Fixed station with frequency antenna and receiver levels In the right panel detailed information may be displayed at each level Data fields with titles in Bold typeface must have information entered The information on the screen can be modified and saved The example shows information for the Station level 3 Mise Administrative data Owner information C144 Anonymous Stations E Modify Cancels ave oa A Oar Active Licenses Oik Owner Test Owner 1 Value O License 00003 Owner Name Test Owner 1 fF License 0002 Owner Address Address 1 License 0004 7 IBE Biling History Oy sty m i Fx Station FX Test 1 Country Ax Equipment Telephone By Frequency 450 1 MHz W eae Telex O Receiver POINT D2 antenna v886_dat Ras JE Fx Station Fx Test2 Email 0 Equipment EA E Ow Frequency 460 1 MHz go gt Receiver POINT O antenna F699_3 Address Code a OE License 1 0001 Code of Operating Agency PR Owner Test Owner 2 Bire H 0 E archived Licenses Billing jane Billing Address Security Cate
15. S4DC User Manual Reference Using the Geographical Information System 1 5 Geographical information systems of SMS4DC software 1 5 1 Vector maps 1 5 2 Raster maps 6 3 Changing of DEM map 6 16 Importing a vector file and depicting on map Using the Vector Map 3 3 Vector map view 3 3 1 Option menu of vector map view 3 3 2 Help menu of vector map view 3 3 3 Toolbar of vector map view Using the DEM 3 4 DEM view 3 4 1 Toolbar of DEM view 3 4 2 Menus of DEM view 3 4 2 1 File menu of DEM view 3 4 2 2 View menu of DEM view 3 4 2 3 Window menu of DEM view 3 4 2 4 Help menu of DEM view Description of task or sub task SMS4DC User Manual Reference Using the Calculation Profile and Tools menus 3 4 2 5 Tools menu of DEM view 3 4 2 5 2 2D View Contour item in Tools menu of DEM view 3 4 2 5 3 3D View item in Tools menu of DEM view 3 4 2 6 Calculations menu of DEM view 3 4 2 6 1 Effective height calculation in the Calculations menu 3 4 2 6 2 Intermodulation calculation in the Calculation menu 3 4 2 7 Profile menu of DEM view Using the Propagation tools 3 4 2 9 Propagation Models menu of DEM view 3 4 2 9 1 Menu of propagation models P 618 propagation model 3 4 2 9 2 Tools menu of area calculation window 3 4 2 10 Vectors menu of DEM view 94 6 5 Path profile extraction 6 9 Field strength calculation 37 Description of task or sub task SMS4DC User Manua
16. Spectrum Management System for Developing Countries SMS4DC Executive Overview of the main features 2 2 1 2 2 2 3 2 4 TABLE OF CONTENTS MM trOGU CHO eisssicsccasicccatectesdccesscccecensetcccesseceedcosessccbsass eedosessedeasceessesdosecdecasscacdecossec A Installation and Operational Requirements for SMS4DC ccsccssseeseeee D Computer and Operating SYStEM ccccscccsssscssssscssssccssssccssssccsssssssssees 5 National legal and regulatory framework cccssccssssccsssssssssscsssccssssscssssees D Licensing database ssssssssssssssssssscossosssxsssesssissssssssosssossssssossssssssosssss sossssssossis ssssesse 9 5 6 eocccce Licensing SVS COMI os ses sovsscsaceacdvdessnsenashesdenchcanasaedonnseds ouvavsesnacenchosnsuedasuacdssboamnoesboies 2 5 echnical information database ccccccccccccccccccccccccccccccccccccccscssces 2 6 3 3 1 3 2 3 3 4 4 1 4 2 4 3 4 4 4 5 4 6 5 5 1 5 2 6 6 1 6 2 7 7 1 7 2 7 3 7 4 7 5 7 6 8 1 8 2 8 3 8 4 Staff knowledge experience and training sssssesssscoocoossssssssssseeeeeoe Geographical Information System sesesocesooessoesssecssocesocesoocessecssccesocesocesoosessee 7 O aA LA ERETT TATA TT EER E International Digitized World Map IDWM sssscesssessocessecssccssooesoosesoeessee S Digital Elevation Model DEM ccsccssccsssccscccsccccsccessccesscesesces Engineering tools Calc
17. TY System a 4531 Y 4532 Y 4533 Y 4534 Library of technical 7 ss v information for equipmen t For New Fixed Equiment Type 1 Manufacturer 4540 Y Station data entry if D 4542 Y the same equipment n Ee 7 has already been stored su in the library the 4546 y 4547 lt technical information can be recalled to save re entering the data Figure 4 3 Transmitter spectrum mask 7 i x Transmitter emission pace mask and editor mE Also receiver filter mask si a a ee x 22 40 and editor Emission masks and receiver filters are used in interference calculations Tie Diseimination NED M 4 Discrimination NFD O on i Actual values must be 12 178 14 17 8 entered for each type of 22 equipment otherwise a 40 Retresh Canes J default value is used 21 Figure 4 4 Antenna catalogue Library of technical information for antennas For New Station data entry if the same antenna has already been stored in the library the technical information can be recalled to save re entering the data Antenna Catalog Antenna Gait 119 ge06test 118 cpvtestt 42 0 20 0 120 ge06test 121 geOBtestit 122 ge06testi 20 0 20 0 20 0 127 cpvtestH 128 cpvtest1H 42 0 42 0 123 cpvtesttH 130 ge06testM 42 0 147
18. al 3 Geographical Information System 3 1 Overview SMS4DC makes extensive use of a Geographical Information System GIS to improve the effectiveness of assignment tasks The geographical locations of transmitters and receivers together with terrain height information are essential factors that must be taken into account in frequency assignment Therefore a GIS offers the engineer significant benefits to frequency planning and interference management by providing a visual presentation of the relative locations of country and regional borders mountains and coastal areas and transmitter receiver sites with overlays for field strength contours to show coverage areas and interference zones SMS4DC has two map displays International Digital World Map IDWM and the Digital Elevation Map DEM These also provide an interface through Windows style tool bars to other functions including Google Earth 3 2 International Digitized World Map IDWM SMS4DC incorporates the ITU IDWM This is a database in map format of geographical and technical data related to the Radio Regulations and certain Regional Agreements The drop down menu allows the following to be displayed on the map ITU Regions Country borders Coast lines Islands Lakes Propagation zones as defined in the Regional Agreements ST61 GE84 GE89 and GE2006 The initial display is of the whole World but users may use the Graphical User Interface GUI to zoom in on partic
19. alues x Service Type Class of Station Je Broadcasting x jec Broadcasting station sound x m Station Name Staiots5 Latitude 46 N vifs o0 Latitudetdeg 46 741667 Longitude oos jE ifo foo Longitude deg jeme Height_asl m fos Power w_eirp fioooo Frequency MHz fo ooo Insertion Loss dB E Rx Sensitivity ul 0 35 Emission 8K50F3E gt Antenna Neme GESsDV 000 lt i sSCS Azimuthideg 0 Beamwidth_E deg 360 Elevationidea 0 BeamWwidth Hideg 360 Gaina a Polarization v Show Pattem Height_aglfm 200 Save Cancel 29 Eladministrative datal fire Administrative data ixed Base station information 4a Anonymous Stations 4 Poe Daa Fixed Base Stations Modify envell ave OE FB Station Senegal FB OE FB Station UHF Base M0001 Admin Ret 1D OE FB Station UHF Base m0002 Site ID OE FB Station UHF Base M0003 COS FE Station UHF Base M0004 Station Name OE FB Station UHF Base m0005 Call Sign of Station Fx0001 Class of Station B Rx Equi Stati jon T Frequency 1350 6125 MHz seul E 2 E z x zg Py 5 I Sola a S 3 Oo Q i e e fi O L Receiver POINT i ER antenna F699_1 ITU region G5 Fx Station FX0004 Latitude 131900 00 DDMMSS IEN FX Station Fx0005 Longitude 0164430 00 DDMMSS OE Fx Station Fxoo06 2a Mobile Stations Country Daa Earth Stations Radius of Service
20. ample by specifying the maximum field strength at the border or at some distance from the border in the territory of the other country The SMS4DC_ Coordination menu Agreements enables the technical details of Coordination Agreements to be stored in the database while Border provides functions to assess whether a station meets the technical conditions of the Agreement 8 3 Earth station coordination RR Appendix 7 procedure SMS4DC has two menu items that assist with the Appendix 7 procedure The IDWM Options Appendix 7 sub menu enables selection of an Earth station in the database and drawing the various coordination contours in accordance with Appendix 7 on the IDWM map Other sub menu items display details of the calculation results including probably affected countries coordination contour data and coordination information data The DEM Interference menu has sub menu items to calculate interference caused or received by a selected Earth station on or from other Earth stations or Fixed stations located inside a circular area around the selected Earth station using ITU R Recommendation P 452 by consideration of antenna patterns and NFD Net Filter Discrimination 8 4 Generation of notices of frequency assignments for electronic submission to the ITU Radio Communications Bureau Any frequency assignment has to be notified to BR if e its use is likely to cause harmful interference e it will be used for international communications
21. clerical officers to perform data entry engineering officers to perform assignment and licensing officers to perform licensing and accounting SMS4DC provides a simple accounting system for recording fee payments and invoicing 6 2 Stations Licenses and Billing The Licensing tools are accessed from the DEM Database Menu or directly at sign on if the user has only Data Entry or Licensing access permission Licensing information is presented in the Administrative data window in a tree or hierarchical format There are three main sections Anonymous stations These stations are not yet licensed They are added to the database in the engineering analysis stage of the assignment process If a frequency is successfully assigned they may be transferred to a license However such stations could also be added for test purposes only and deleted once the analysis is complete Active licenses Each Active licence contains the details of the Owner Licence s Billing history fees paid and invoices issued Stations including frequencies antennas etc Archived licenses When an Active license is deleted cancelled or modified it can be transferred to the Archived licenses part of the database for future information and record keeping The database has a hierarchical structure Owner gt Licensel gt License n gt Billing history gt Billing history gt Station s gt Station s gt Equipment gt Equipment gt Frequency g
22. dcasting service might be affected by a Fixed or Land Mobile receiver of another Administration 16 Coverage Area calculates the noise limited and interference limited coverage areas for a wanted broadcasting assignment These may be displayed on the DEM Service Area calculates the service area test points for a wanted broadcasting assignment These may be displayed on the DEM Interference To and Interference From different scenarios are implemented to calculate interference between the broadcasting assignments allotments and between the broadcasting assignments allotments and stations in the fixed and land mobile services included in the GE06 Plan These scenarios include interference to and from Digital Sound TV Analogue TV Fixed and Land Mobile services 8 2 Fixed and Land Mobile Service Coordination Agreements these are agreed between countries on a bi lateral or multi lateral basis and are generally used to assist frequency coordination and avoid interference in border areas Without such an agreement co ordination could be on a first come first served basis Agreements allow frequency bands to be shared equitably between all the countries sharing a border by dividing the bands into preferred and non preferred sub bands In its preferred sub bands a country has preferential usage rights Agreements define the preferred sub bands allotted to each country and the associated technical conditions for the usage rights for ex
23. e Swiss border and surrounding countries The colour scale altitude is shown in the legend The DEM menus and toolbars access the main engineering assignment and coordination tools DIS ets 20 ys pal Deals teso S o Country Region Germany Code D Latin 49 2570000 lon E 011 39 30 000 alt m 580 Admin Code Coastal Zone Cold Sea t 22 40 10 Figure 1 3 Station display and line draw function DEM showing two station symbols and the pop up information display for Station465 The arrow shows the line drawn between stations and the result on the status bar for distance and azimuth calculation function Eation Name Station465 Location 46N3030 005E4530 Class of Station BC Emission SKSOF3E Latin 46 300 000 Lon E 005 45 30 000 alt m 820 Dist km 76 249 23 2 Propagation calculation results 35e Propagation Models Vectors Frequency Allocations Coordination Inte hal Free Space gt i gt Line of Sight j gt Line b Poliyiine Okumura Hata Link P 526 Diffraction Field Strength Cont P 526 Smooth Earth ae P 452 Network Processor P S30 P 618 Overlay Figure 2 1 Sample Propagation calculation and DEM display The Propagation Models menu offers a choice of well known models The example shows the results from the model given in ITU Recommendation P 370 w
24. e areas with geographical display e International frequency coordination tools including assessment of the proposed assignment for compliance with ITU Regional Agreements bilateral or multilateral agreements SMS4DC automates the technical analysis used in the assignment process but does not decide which frequency should be assigned After the automated technical analysis procedure has completed the results for each available frequency are displayed to an engineer who can make the assignment decision based on the results The engineer must have a thorough understanding of the principles of frequency assignment in order to interpret the results and if necessary carry out more detailed analysis Although there are differences in the assignment procedures and technical considerations for the Land Mobile Fixed and Broadcasting Services there is a core procedure common to all service types which is explained briefly in 7 2 7 3 below After SMS4DC has completed the initial examination of available channels the engineer may use the specialized analysis tools for the service type concerned 7 2 Determine available channels from the Channel Arrangement Tables 13 SMS4DC obtains a list of channels available for the assignment service type from the national channel arrangement tables that were entered into the database during initial setup and is consistent with the National Frequency Allocation Table NFAT The NFAT is based on the Freque
25. e its use is governed by a plan e g GE84 and GE06 e its use is subject to a coordination procedure Article 9 e there is a desire to secure international recognition of its use SMS4DC can generate store and display electronic notices to notify ITU BR the assigned frequency s or administrative modification s for assignments to Land Mobile Fixed and Broadcast stations The relevant ITU electronic notice forms are TOI T02 T11 T12 T13 T14 TB1 TB2 TB3 TB4 TB5 G11 G12 G13 G14 17 GS1 GT1 G02 and GB1 Also for Earth stations electronic notice files will be created in the form of Microsoft Access database files During data entry SMS4DC assists the officer by automatically taking into account the notice type and predicting which data items should be filled and used Notice forms cannot be generated if the mandatory fields in any of the data entry masks are incomplete or have invalid data 9 Importing data from BR IFIC Terrestrial Services and the Space Radiocommunications Stations SRS on DVD ROM or from BR IFIC Space Services on CD ROM The BR International Frequency Information Circular BR IFIC Terrestrial Services issued once every two weeks by the Radiocommunication Bureau It contains information on the frequency assignments allotments submitted by Administrations to the Radiocommunication Bureau for recording in the Master International Frequency Register and in the various regional or worldwide Plans Agreem
26. e name Directories L Antenna L Antenna Library Bin L Border coordination results Spe Effective Antenna Heights TABDT_Soft SMS4DC 35 Annex 3 Task oriented Index for the SMS4DC User Manual Description of task or sub task SMS4DC User Manual Reference Introduction and background 1 1 Background 1 2 Objectives of SMS4DC software 1 3 Features of SMS4DC software 1 4 Structure of SMS4DC software 1 4 1 Core of SMS4DC software 1 4 2 Shell and external elements of SMS4DC software System installation and operational requirements for SMS4DC 2 1 System requirement 2 2 Setup 2 2 1 Setup on a multiple client network 2 2 2 Single user Setup 2 3 USB Hard lock setup 2 4 Directory structure of SMS4DC 2 6 Local database migration 2 7 Customization of administrative functions Creating Reference files tables and libraries 1 6 Database structure of SMS4DC 1 7 Utilized reference materials from ITU 3 4 2 5 1 Antenna Editor in Tools menu of DEM view 6 6 New antenna definition 6 10 Modification of a frequency allocation 232 6 11 Addition of footnotes 232 6 12 Definition and modification of frequency arrangements Setting up System and Database Security 3 1 Program start 2 5 Security 3 2 Definition of User ID and Password 6 4 Restoring backup 6 7 User account management 36 Description of task or sub task SM
27. eadsheet format with a separate row to show calculation results for each existing assignment If the difference between wanted and unwanted field strength exceeds an engineer defined level that row is marked in red as a potential interference case e At this point the engineer may decide to assign the channel consider other channels or to undertake more detailed analysis using the other analysis tools available including the special interference tools for the service concerned 7 4 Land Mobile Service The general frequency assignment procedure described in 7 2 7 3 above can be used to assign frequencies to the Land Mobile Service Assignments can be made to Fixed Base FB or Mobile ML stations FB stations will have a specific transmitting site while ML stations can operate within a specified area FB and ML stations may be linked together in the database if they are part of the same system If the Fixed Base is part of a larger system using other Fixed Base stations to provide wider geographical coverage the Network Processor in the propagation tools menu may be used to assess overall coverage Once a frequency has been assigned probably it will be necessary to co ordinate with neighbouring countries see Section 8 Co ordination menu 7 5 Fixed service Point to point links in the Fixed service will have two stations at each end of the link or hop using highly directional antenna The engineer will first use the 14
28. endation ITU R P 452 FX2FX station calculates interference between fixed stations in accordance with recommendation ITU R P 452 taking into account antennas pattern and Net Filter Discrimination NFD overlap between transmitter and receiver emission masks Once a frequency has been assigned probably it will be necessary to co ordinate with neighbouring countries see Section 8 Co ordination menu 7 6 Broadcasting service The general frequency assignment procedure described above in 7 2 7 3 may be used to find frequencies for new broadcasting stations not in the Plans However in most cases Administrations will be using the frequency co ordination tools described in Section 8 to implement bring into service and coordinate their allotments and assignments included in the various Plans associated with the ST61 GE84 GE89 and GE06 Agreements In cases where Administrations are not satisfied with their allotments and assignments in the Plans and are seeking to make large changes or additions to the Plans advice from the ITU Radiocommunication Bureau should be obtained The Interference menu provides two tools BC2BC for analogue sound and BT2BT for analogue TV stations These calculate aggregate interference level of interfering broadcasting BC or BT stations on a directional receiver of a wanted BC or BT station 8 Frequency Co ordination Menu 8 1 Overview SMS4DC has the co ordination tools required for Broadcasting service
29. engineering tools for example to check the azimuth directions between the link stations so that the correct values are entered for the interference calculations and to check the Fresnel zone clearance Complex systems may have several hops in tandem to cover longer distances over difficult e g mountainous terrain or to link several intermediate points to provide a backbone like communications system Each hop will use a two frequency channel for go and return duplex operation probably in accordance with one of the ITU R recommended channel arrangements One frequency of the channel is assigned for transmit at one end of the link station A and the other frequency of the channel is assigned at the other end of the link station B The general frequency assignment procedure described in 7 2 7 3 above can be used to assign one frequency of a suitable channel to station A and then the procedure is repeated to assign the other frequency of the same channel to station B SMS4DC has a facility to associate Station A and B with each other in the database so they are displayed as a link on the DEM and considered as a pair for interference assessment The Interference menu can then be used and two interference tools are provided FX2FX link calculates interference of stations between different point to point hops taking into account antenna radiation patterns and cross polar discrimination XPD in accordance with recomm
30. ents The BR International Frequency Information Circular BR IFIC Space Services issued once every two weeks by the Radiocommunication Bureau It contains information alphanumeric and graphic relating to satellite networks and Earth stations recorded in the Master International Frequency Register MIFR or in the process of coordination or published under the advanced publication of information procedure The Space Radiocommunications Stations SRS on DVD ROM is published in electronic form every six months by the Radiocommunication Bureau BR It contains information alphanumeric and graphic relating to satellite networks and Earth stations recorded in the Master International Frequency Register MIFR or in the process of coordination or published under the advanced publication of information procedure The information in these ITU publications is essential for an administration to perform its international coordination responsibilities in accordance with the Radio Regulations SMS4DC provides an import facility so that relevant data in particular about frequency assignments in neighbouring countries can be imported from the BR IFIC and SRS into the SMS4DC database Without this data the frequency coordination functions described in 8 2 and 8 3 above cannot be used 10 System and Database Security 10 1 Overview A fully operational system with database licensing and technical analysis facilities represents a large inves
31. equency Antenna editor Antenna characteristics horizontal and vertical gain patterns are used to calculate effective radiated power e r p and are also required for many ITU notification procedures SMS4DC has an antenna pattern library and this tool is used to enter into the library the patterns for new antennas or to modify existing patterns Effective antenna height of a transmitting antenna is the height of the antenna above terrain height averaged between distances of 3 to 15 km in the direction of the receiving antenna It is used in many propagation prediction models and is also required for many ITU notification procedures This tool produces a file of heights for each or 5 degree radial around the transmitter that is compatible with ITU electronic notification procedures It can also display the result on a colour scale map Once a Line or Polyline has been drawn the following additional items in the Calculation menu are activated e Distance gives the distance between the end points of a line or total length of the polylines e Area if a Polyline encloses a polygon beginning and end points are the same the enclosed area is measured e Azimuth calculates the angle with respect to North of the line as measured from the beginning point e Elevation measures the angle of the line with respect to the horizon as measured from the beginning point 4 4 Profile menu once a line or polyline has been drawn these items are acti
32. ex 3 Task oriented index for the SMS4DC User Manual 0 36 1 Introduction It is generally accepted that an effective telecommunication infrastructure is one of the essential drivers that enables a country to achieve successful social and economic development Wireless telecommunication is especially important for developing countries because it will reduce the time and expense of installing copper or fibre networks in large rural areas Therefore an orderly management of the national use of the radio spectrum resource is crucial to obtain the maximum benefits A number of administrations of developed countries are exploring the use of market methods to transfer responsibility for detailed spectrum management to industry and users However these administrations without exception have the benefit of a long standing and strong foundation in traditional so called command and control spectrum management methods that enables them to create a technical and regulatory envelope within which the new methods can operate successfully and safely The International Telecommunication Union Telecommunication Development Bureau ITU BDT can supply a computer program to assist the administrations of developing countries to perform their spectrum management responsibilities more effectively This program is known as the Spectrum Management System for Developing Countries SMS4DC SMS4DC is intended to be a low cost entry level spectrum management s
33. gory Oo a 2 3 a g ae Address 1 Figure 5 3 Administrative data screen 2 Active licenses In the left panel the tree structure showing Active licenses with an example expanded display for a Fixed station license showing billing history equipment frequency linked receiver antenna levels In the right panel detailed information may be displayed for each level This information can be modified and saved The example shows information for the Owner level 3 6 Frequency assignment Assignment R 1480 000125 Primary Station Name 1 Test 3 Location 036 5730 14N0930 Emission 8K50F3E Frequency MH2 148 5 1480 000125 Primary Selected ChannelfMH2 148 25 1480 000125 Primary 1480 000125 Primary 1480 000125 Primary 1480 000125 Primary r No of Channels E 56 With Interference 4 Permissible field strength 20 dBu m 2 LM Test Land Mobile 148 250000 036E3330 14N0100 45 9 51 53 51 53 Assign Cancel Figure 6 1 Frequency Assignment Procedure Results spreadsheet Shows analysis of all channels available to the service in the requested frequency range Frequency rows shown in yellow have existing stations within a predetermined distance Frequency rows shown in red have already been selected for more detailed analysis with the existing stations and a potential interference condition has been detected The detailed results of the interference calculation for one of the
34. hen used to calculate and display a coverage area and field strength contour Bourgogne E IAS s Lan o 2008Europa Technologies Se l a 2 Goog 1a fia z 4 08 Tele Atlas s L lon 8 0751852 E vi 1419 ft Figure 2 2 Area propagation display exported and displayed on Google Earth map The Vector Handling function has been used to create and export in Google Earth format the result from the ITU R P 370 area and contour calculation example Eye alt 256 66 mi O 24 E Link Calculation P530 1 ae j k_factor Free Space Loss dB 114 289 Pike Save Profile Availability Ref Points y z Bave Piotie _Avaiebiw Bet Points Clearance PS cassie gt gt Link gt gt Total Distance km 26 854 Flat Receive Level dBm Tx Frequency MHz2 460 1 Flat Fade Margin dB Total Geo climatic Loss dB Threshold 0 350 fu 116 108 dBm Pb w 00020883 zan Pofw 200 oS SRB BS oo 9 oo D Distance km Figure 2 3 Link budget analysis using ITU Recommendation P 450 Parameters may be changed including antenna height and the budget is automatically re calculated to give the power at the receiver input 25 3 Frequency Allocation Chart and Footnotes amp National Frequency 1500 1600 MHz 7 Linear Apply National auos Frequency Allocations 2D Chart l loj xj Satellite Service Secondary Service Eu YZ Frequency M
35. her into task oriented sections Where appropriate brief explanatory information is given to assist in the understanding of the importance or purpose of the various tasks and what will be required from the Administration during installation and set up Annex 2 provides screenshots as selected examples to illustrate some of the SMS4DC functions The SMS4DC User Manual provides a complete and thorough menu oriented description of all functions with many screenshots to illustrate what can be expected at each stage of a process Annex 3 provides a task oriented index of the SMS4DC User Manual 2 Installation and Operational Requirements for SMS4DC 2 1 Computer and Operating System Computer hardware SMS4DC may be configured for Single User operation as a Network Workstation or as a Network Server The computer hardware and operating system requirements will depend on the configuration and are listed in Annex 1 In general terms a modest desk top PC 2 GHz clock 512 Mb RAM 3 GB hard disk could be used for a single user or workstation For better performance will require a considerably higher specification 3 GHz clock 2 GB RAM 10 GB hard disk All configurations will require Visual Display Unit 1024 x 768 resolution OpenGL capable DVD drive colour printer Operating System Depending on the configuration Single User or Network Workstation Microsoft Windows 2000 SP4 Windows XP SP2 or Windows Vista Network Server Windows 2000
36. ide antenna beam widths can lead to inefficient spectrum use 2 6 Staff knowledge experience and training On request the ITU may be able to provide special assistance and training in the installation and operation of SMS4DC However it is emphasised that SMS4DC is not a fully automatic frequency assignment system The system automates most of the technical assessment procedures and displays the results The final decision must be made by a suitably qualified radio engineer who should understand fully the assignment procedures and be able to interpret correctly the results displayed The engineer should have a thorough understanding of interference mechanisms field strengths protection ratios propagation modeling and typical operation of the land mobile fixed and broadcast services Also for frequency co ordination and notification the engineer should have an understanding of the ITU procedures especially the procedures in the ST61 GE84 GE89 and GE06 Agreements if the engineer is to make assignments to broadcast stations If clerical officers are used for data entry they will also need basic training to understand some technical terms in order to read the application forms and enter the data accurately These terms include service definitions power antenna gain geographical coordinates ITU designations types of ITU notification forms etc A full description of each field in the data entry screens is given in Chapter 4 of the User Manu
37. ied and saved i 26 4 Reference Tables and Libraries Figure 4 1 Frequency Channel ID 13 Frequency Plan ID 3400000025 Region National gt arrangement editor Service Fixed Sy kawal screen Type of Frequency Plan Homogeneous x No Fn Fo Foff n XS F n Fo Foff n XS aenn p 5 1 340025000 3500 25000 The set up screen for Channnel Spacing XS 0 25 MHz 2 340050000 3500 50000 frequency or channel Refrence Frequency Fo 3400 MHz 3 340075000 3500 75000 h ith Lower Frequency Offset Foff 0 MHz As 3401 00000 3501 90008 arrangements is shown wi aar Tes RUE 7 5 340125000 350125000 S z an example of a Fixed S at NLA SR et b Channnels 7 340175000 3501 75000 service arrangement based Number of Channnels n 400 8 3402 100000 3502 00000 on the formula given in ITU E 9 340225000 350225000 F 1488 a th First 10 Last 339 Channel Set an z 3402 50000 3502 50000 a i nce Gong es 3402 75000 3502 75000 appropriate parameters have 3403 00000 3503 00000 ITU R Recomendation F 1488 been entered e g channel eee spacing reference frequency and upper lower ls frequency offset SMS4DC ma BE ME calculates the channel centre frequencies Fn F n and saves them in a file Figure 4 2 Equipient Catalog F j pm i xj Equipment catalogue Internal Equir Equipment Name Pi Type of Rad Manufacturer Model FM Transmis
38. l Reference Frequency Assignment and Interference Interference Fixed service Interference Fixed and Mobile services Interference Broadcast service Interference Earth stations 3 4 2 11 Frequency Allocations menu of DEM view 3 4 2 13 Interference menu of DEM view 6 1 Establishing a station 6 2 Finding station 6 13 Frequency assignment 6 14 Interference calculation 3 4 2 13 Interference menu of DEM view 3 4 2 13 1 FXM sub menu of Interference menu of DEM view 5 4 Interference of stations in Fixed services on each other above 1 GHz 3 4 2 13 Interference menu of DEM view 5 3 Interference of stations in Fixed and Land mobile services on each other 3 4 2 13 Interference menu of DEM view 5 1 BC to BC interference calculation procedure 5 2 BT to BT interference calculation procedure 3 4 2 13 Interference menu of DEM view Frequency Co ordination 3 4 2 12 Coordination menu of DEM view Frequency Co ordination Broadcasting services ST61 3 4 2 12 2 ST61 sub menu of DEM view Frequency Co ordination Broadcasting services GE84 3 4 2 12 1 GE84 sub menu of DEM view Frequency Co ordination Broadcasting services GE89 3 4 2 12 3 GE89 sub menu of DEM view 3 4 2 12 3 1 GE89 Interference sub menu of DEM view Frequency Co ordination Broadcasting services GE06 3 4 2 12 4 GE06 sub menu of DEM view 3 4 2 12 4 1 GE06 Interference To sub menu of DEM view 3 4
39. l standards to license users to charge license fees and to enforce licence conditions In particular there should be a National Frequency Allocation Table agreed at ministerial level from which the available channel lists for SMS4DC will be created During the installation these lists of nationally available channels will be entered into SMS4DC 2 3 Licensing database The Administration must supply a database of existing use for the frequency bands and services for which SMS4DC is intended to be used This database must be transferred to the SMS4DC database otherwise the frequency assignment process will be unable to perform interference calculations between new assignments and existing users If the database is in paper format the information will have to be entered manually If it is in computer format e g Microsoft Access or even an Excel spreadsheet it may be possible for a custom conversion program to be developed If there is no existing database the Administration should seek further advice from the ITU However creating a database when there are few or inadequate existing records will be a lengthy business possibly requiring an extensive monitoring campaign 2 4 Licensing system SMS4DC and the licensing database must be part of an integrated licensing system otherwise the data will become outdated It should be a national legal requirement for all transmissions to be licensed and for licensees to inform the Administrati
40. ld strength GE84 Co ordination there are several tools to co ordinate FM sound broadcasting station with stations in the broadcasting fixed and land mobile radiocommunication services in accordance with the GE84 plan Sound broadcasting stations BC2BC coordination distance ST61 TV stations BC2BT ST61 coordination distance Fixed BC2FX field strength Land Mobile BC2LM field strength There are additional tools to calculate aggregate interference and nuisance field strengths to and from sound broadcasting stations to other sound broadcasting stations GE06 Co ordination BCBT2BCBT Affected Admin identifies Administrations whose Sound or TV Broadcast services might be affected by a Sound or TV broadcast transmitter of another Administration BCBT2FXLM Affected Admin identifies Administrations whose Fixed or Land Mobile services might be affected by a Sound or TV broadcast transmitter of another Administration FXLM2BCBT Affected Admin identifies Administrations whose Sound or TV broadcast services might be affected by a Fixed or Land Mobile transmitter of another Administration FXLM2BCBT Affected Admin TX FXLM identifies by a coordination contour defined in the GE06 Plan Administrations whose broadcasting service might be affected by a Fixed or Land Mobile transmitter of another Administration FXLM2BCBT Affected Admin RX FXLM identifies by a coordination contour defined in the GE06 Plan Administrations whose broa
41. ncy Allocation Table in the Radio Regulations Article 5 which specifies the international allocation of frequency bands to radiocommunication services However additional national information is included to show for each band which government departments or agencies have authority to make frequency assignments Each relevant department or agency may then decide how the frequency bands within its authority should be arranged to facilitate assignment channel bandwidths single frequency or two frequency channels etc In view of its importance the NFAT is usually agreed at inter department level An agreed NFAT is therefore essential to prepare the national channel arrangement tables for entry into SMS4DC as part of the initial installation procedure 7 3 Initial analysis of the available channels for existing stations e ach of the channels in the appropriate national channel arrangement table is examined to find any existing assignments within a circular area engineer defined The results are displayed on screen in spreadsheet format with each channel shown on a separate row A row is marked in yellow for any channel with an existing assignment within the defined area e The engineer can select any channel for a detailed interference analysis by mouse click on the appropriate row The free space propagation model is used to calculate the field strengths to and from the proposed assignment and existing assignments Results are displayed in spr
42. on about changes Also it will be necessary to provide an appropriate enforcement system so that legal action may be taken against users of unlicensed transmitters or operation not in accordance with license conditions This ensures that license records are kept up to date and an accurate record of frequency use is maintained There should be an appropriate fee structure for cost recovery for the licensing system see ITU R Report 2012 Forms for licence applications and licence schedules will be required and must be designed to ensure all relevant information is submitted on applications or printed on a licence schedule which is a legal document Different forms will be required for each service Information sheets or an Administration internet website should be provided so that applicants for licences have sufficient information about licence requirements and fees 2 5 Technical information database SMS4DC uses several internal technical reference tables during the assignment process Channel Arrangements these are derived from the National Frequency Allocation Table and national technical policies on how particular frequency bands should be used A channel arrangement will specify whether the channels should be single frequency or two frequency the frequency spacing between channels and any necessary guard bands to protect services in adjacent bands The service type and typical equipment characteristics will normally be the deciding factor
43. osesssesessssse L4 Fix d SOT VICE iscsi ssiesayscuukscsussicsspyanldssoussecepy dues susossiecepsasslashevsoeaspiarescubosoucssbrenee LA Broadcasting SEPViCG sisi dseve dos icc ds exes iva nadine dct is anesexeeeciassdeies Hiei LS Frequency Co ordination Menu ccsscccsssscssssccssssccsssscessssssssscssssscsssseees L5 COVERVIEW sevsiidsinwower s sulvuide Sava easievicdenissnsaudde vans Vessvendicedsnes veuddews suse Fixed and Land Mobile Service Coordination Agreements 17 Earth Station Coordination RR Appendix 7 procedure 6 0017 Generation of notices of frequency assignments for electronic submission to the ITU Radio Communications bureau ss00017 9 Importing data fro BR IFIC Terrestrial Services and the Space Radiocommunications Stations SRS on DVD Rom or from BR IFIC Space Services on CD ROM ccccccsccsccccssccscscccsccscsccsscossccsess 18 10 System and Database Security sccssssccssssccssscsssccssssscsssssessscessessesees 18 TOD OVERVICW is sciences seh caiyeds dese i e obs arnun eee aens bap E EE ies 18 10 2 Database back up and restore cccccccssccccsccccccsccccesscccecssscecees 18 10 3 User access security levels cccccssscccscccsccscsccssccscsccscccssccsscseess 19 Annexes Annex 1 System Requirements scsccosssccssccscsccsscccccccsscccsccssccoss 20 Annex 2 Example SMS4DC screenshots to illustrate the main features 21 Ann
44. pport The minimum hardware requirements listed above assumes operation under Windows 2000 The use of a more resource consuming version requires a more capable hardware platform especially with respect to the processor and the amount of RAM e g suitable operation under Windows XP will be best achieved with a Pentium IV based PC with a least 2 Gbytes of RAM SMS4DC has been developed and tested for operation on systems with the following configurations e Microsoft Windows Operating system Windows 2000 SP4 Windows XP SP2 and Windows Vista for single user setup or for workstation in case of setup on network e Windows 2000 server edition or Windows XP server for server in case of setup on network e Microsoft Office 2000 2002 and 2007 or later e Adobe Acrobat PDF reader version 6 or later Note The DPI settings for the Windows screen should be set to normal size 96 dpi 20 1 1 1 2 1 3 2 1 2 2 4 3 4 4 4 5 5 1 5 2 Annex 2 Example SMS4DC screenshots to illustrate the main features Graphic Information System Vector map International Digitized World Map IDWM Raster Map Digital Elevation Map Global Land One kilometer Base Elevation model GLOBE DEM Station display and line draw function Propagation calculation results Sample Propagation calculation field strength contour and area and DEM display Results of contour and area propagation calculation exported and displayed
45. roup Data entry Stations LM F B 4 8 The level of Station 4 8 1 Context menu in the level of Station Data entry Equipment 4 10 The level of Equipment 4 10 1 Context menu in the level of Equipment Data entry Frequency 4 11 The level of Frequency 4 11 1 Context menu in the level of Frequency Data entry Antenna 4 12 The level of Antenna 4 12 1 Context menu in the level of Antenna Data entry Receiver 4 13 The level of Receiver 4 13 1 Context menu in the level of Receiver Data entry Allotments and Contours 4 14 The level of Allotment 4 14 1 Context menu in the level of Allotment 4 15 The level of Contour 4 15 1 Context menu in the level of Contour Billing and invoicing 4 9 The level of Billing History 4 9 1 Context menu in the level of Billing History 6 15 Billing in SMS4DC 2 7 Customization of administrative functions 6 18 Customization of SMS4DC 39
46. s If there are no national channel arrangements these can be developed using ITU recommendations and equipment standards from international standards organisations To assist Depending on national policies some transmissions may be license exempt because the technology used ensures minimum probability of interference with other systems frequency co ordination arrangements should be harmonised with neighbouring countries Arrangements for those bands currently in use will have to be decided and agreed before installation Other sub bands can be added later when they are brought into use Equipment Library The equipment characteristics are recorded in the database for each station as part of the licensing process Some information such as transmitter and receiver emission masks are necessary to calculate interference values during frequency assignment Typical values for this information can be entered during initial use of SMS4DC In the longer term the Administration should consider developing a list of approved equipment as this would help the data entry officers Antenna Library There is a similar requirement to record information on antennas patterns defining vertical and horizontal gain Typical information can be entered as part of the installation package but in the longer term the Administration should consider producing a list of required characteristics especially for point to point links as unnecessarily w
47. some graphical tools which are also used in the Propagation tools menu 4 2 Graphical tools on the DEM Toolbar Some tools in the Calculation and Profile menus are activated only after use of certain graphical tools shown as push buttons on the DEM toolbar e Line Lines can be drawn on the Digital Elevation Map by mouse click on the beginning and end points e Polyline Polylines two or more joined lines can be drawn on the DEM by mouse click on the beginning and intermediate points and double click on the end point 4 3 Calculation menu Radio Horizon Uses the standard formula to calculate the radio horizon distance between two stations taking into account antenna heights and the effective Earth radius Intermodulation Is a common effect when several transmitters and receivers operate in close proximity e g at a hill top site and is the result of two or more signals of different frequencies being mixed together usually in the amplifier circuits of the receivers or transmitters to form additional signals that can cause interference to receivers on site or nearby This tool calculates the frequencies of these unwanted signals with the objective to avoid using frequencies on the site that have an intermodulation relationship Unit conversion This useful tool enables the engineer to convert different radio engineering unit from one to the other e g from receiver input dBuV to field strength dBuV m at a particular fr
48. t Frequency gt Antenna gt Antenna An Owner may have one or more Licences A Licence may have one or more Stations in the same service A Station may have one or more Frequencies or Antennas 12 Licenses in some services may have additional levels for example a Broadcasting license may have Allotments an Earth station may have Beams and a Fixed station may have a Receiver Access to Licence printing is at the Licence level and Fee payments and invoicing are at the Billing history level 7 Frequency Assignment and Interference 7 1 Overview SMS4DC offers a range of functions that can be used to provide detailed technical and administrative assistance in the assignment of frequencies to the Land Mobile Fixed and Broadcasting Services These include e Providing a database structure that contains all the necessary technical and administrative information with an interface between assignment and licensing processes e Ability to specify which channels are available through user defined channel arrangements service type frequency spacing single and paired frequency channels etc e Automatic assessment of all available channels in a given frequency range taking into account co channel and adjacent channel interference between the new and existing assignments Detailed results are displayed for the assignment engineer to choose the most suitable channel e Use of propagation tools to estimate service coverage interferenc
49. the necessary training and experience of propagation modeling to understand how to use the SMS4DC tools to obtain valid results 5 2 Analysis Types Table 5 2 1 shows the propagation models implemented in SMS4DC and the valid combinations of model and type of analysis Lines Polylines or an Area box may be defined drawn on the Digital Elevation Map using the DEM toolbar functions see 4 2 Once drawn the relevant menu items are enabled in the Propagation Tools Menu for further analysis in accordance with Table 5 1 valid combinations are marked Y Depending on the analysis type and model the output could be for example a graph of field strength along a line or polyline or a window containing a colour scale field strength value map from a selected transmitter in a defined area Such maps may be overlaid with variable transparency on the Digital Elevation Map Link analysis enables a complete analysis of the link budget between selected stations in a point to point link including the path profile and Fresnel zones in a comprehensive graphical display Various parameters may be adjusted and the link budget is automatically recalculated to determine the effect Contour analysis determines field strength values along each radial at 1 degree intervals around the selected transmitter and draws a contour through all locations where the field strength is equal to a specified value For example using P 1546 as the model within this conto
50. tment in time and resources Once the spectrum management organisation has integrated the SMS4DC into its operations and comes to depend on it there would be severe disruption to the organisation and licensees if the data was lost though malfunction or disaster or if unauthorized persons gained access to the data and used it incorrectly or inappropriately 10 2 Database back up and restore 18 SMS4DC provides the facility to back up the database so that it may be stored in a secure location separate from the SMS4DC server This back up copy may be re installed on the server or on a different server in the case of a major hardware failure 10 3 User access security levels SMS4DC has six 6 levels of security for user access to prevent unauthorized persons using the system modifying licensee records or reference tables This function is required when the organisation intends to have different levels of staff using the system for example clerical officers licensing officers accounting officers engineering officers etc A large organisation would appoint a System Supervisor with access at all levels and overall authority to manage user identification name User ID passwords and security level for each member of staff working on SMS4DC These security levels are a Supervisor Authorized to read write all parts of the database to manage user IDs and passwords reference tables and to configure and use any features of the soft
51. ular geographic locations 3 3 Digital Elevation Model DEM The Digital Elevation Model DEM incorporated into SMS4DC is the Global Land One kilometer Base Elevation model GLOBE GLOBE has a resolution slightly better than 1 km at the Equator and progressively finer resolution toward the Poles The terrain heights above sea level can be represented on the map by a grey scale or a colour scale SMS4DC reads the terrain heights in the database and can use them for example to construct path profiles between point to point link stations or in the propagation models to determine effective antenna height and clearance angles Higher resolution raster terrain data can be integrated into SMS4DC to replace GLOBE without the need to change or re compile the software However some assistance from the development team may be required to prepare and install alternative terrain data The DEM is the main GUI for frequency assignment with drop down sub menus and toolbar buttons providing access to the calculation and assignment functions 4 Engineering tools Calculation Profile and Vector Menus 4 1 Overview In addition to the frequency assignment and service specific analysis tools the engineer may use a number of engineering tools and aids that have a general applicability and usefulness for any frequency assignment task These tools may be accessed through the drop down Calculation Profile and Vector menus on the DEM This menu includes
52. ulation Profile and Vector Menus s ssssseeee Graphical tools on the DEM Toolbal csscccssssscsssscssssscsssscssssccsssessesees Calc lation TCH Uva sine seiccvs senee s une housad abbw asm enes vp cnaumacne eas oper rasie Profile menu once a line or polyline has been drawn these items are i OOVOLVIEW ETEEN AEA ATAT NTE EOE EIEEE activated oececcoscsccincos sn isessesi seisen a e r eso LO VECtOrs IMGT soss yacp seen ds nuweteaveussaveaseinacnsaeeacesverueaneccoubonmaetsnesens LO Interface to Google Earth mapping ccsccseccsscccsscccscccssccssccssssel Propagation tools iid accsawciicacincwcmndieen dub kiiknancimnnes LO QVVERVICW sosvicss svicconds ded sianssceusesevveussvvus se ssagnscostscuas casses asosi socassa cosso LO Analysis VV IDES sssssssisisesisissssssissssssseiosunissss treo istosoiisc so si ssisss ossis sesos sesso ei Ll Administrative database and Licensing System esssecscessooesoosssoessseessocesoese LZ OLA aa EEE A T T T ETAN LD Stations Licenses and Billing c sccssccccsccsccccscccscsscsccessccsscssel amp Frequency Assignment and Interference scccssssccsssscssssccsssscsssssssssseees L3 OVVIE Woese ke a iT E EEEE E a LI Determine available channels from the Channel Arrangement Tables 13 Initial analysis of the available channels for existing stations 14 Land Mobile Service osssooooosesesssssssooossssssesesssooo
53. ur the field strength at L of locations and T of time should be greater than the specified field strength values for L and T may be specified in accordance with P 1546 The Network Processor analysis enables comparison of the service areas or interference areas from two or more transmitters to be determined and displayed in different colours on the Digital Elevation Map Table 5 2 1 Analysis type Network Processor givi ioio Propagation Models B amp g S os Best lj S Strength Server Free Space YIY Y IN IN Y Y Line of Sight Y IY Y N IN N N ITU R P 370 YIY Y YsY Y Y ITU R P 1546 YIY Y JYsY Y Y Okumura Hata NIN IY IN IN Y Y ITU R P 526 by diffraction N ININ IY IN N N _ ITU R P 526 Smooth Earth NIN IN JY JIN N N ITU R P 452 NININ JY IN N N ITU R P 530 NININ Y IN N N 6 Administrative database and Licensing System 6 1 Overview The database structure the user access control and the networking capabilities permit SMS4DC to be operated in several configurations depending on the needs size and resources of the Administration or spectrum management authority For example for very small administrations SMS4DC may be configured as a stand alone workstation for a single operator who is responsible for all tasks However for larger administrations several terminals may be networked and the access controls set up to allow
54. vated e Profile shows the terrain height profile along the line or polyline e Fresnel zone for line only shows the terrain height profile and the Fresnel zone clearance between beginning and end points 4 5 Vectors menu e Draw Circle draws a circle of user defined radius around a station in the database e Draw from file draws a vector that has been previously created and stored in a file e Remove from display removes clears all vectors from the map e Vector handling provides an interface to store or delete circles and field strength contours and to export them to Google Earth 4 6 Interface to Google Earth mapping Google Earth is a free on line Internet interactive 3D map display of the Earth with for many geographical areas high resolution satellite images of the Earth s surface and features Overlays of cities towns and roads are provided and using the Keyhole Mark up Language KML users may develop their own overlays e g national regions zones and districts For example the ITU BR generates KML files from its on line Broadcast Query BC Q tool that can be downloaded to provide overlay mapping information on Plan and MIFR assignments and proposed modifications SMS4DC provides an interface through the Tools and Vectors menus that provides a conversion for many of its calculation results field strength contours point to point links and other types of vectors and raster results into KML format files
55. ware b Data entry Licensing and Billing Authorized to read write the licensing and billing contents of the database c Engineers Authorized to read write the technical contents of the database d Senior operator Same as Supervisor e Licensing Same as Data entry f Read only Authorized to use only the information displays without permission to edit any part of the database Also the Supervisor may read and analyse an Audit Trail this is an automatic log of all activity on the system and lists the user ID of the person responsible for the action and the time Thus incorrect or inappropriate action may be traced and the officer identified 19 Annex 1 System requirements Minimum Recommended e Pentium III processor with 1 GHz e Pentium IV processor with 3 GHz clock clock speed or more e speed e Gigabytes Random Access Memory e 256 Megabytes Random Access RAM Memory RAM e Hard Disk Drive with a minimum of 10 e Hard Disk Drive with a minimum of 2 Gigabytes free available for installation in case of single user setup or 200 MB in case of setup on network e CD Drive e SVGA Color Monitor capable of 1024 x 768 pixel resolution e Color Inkjet or Laser printer e Graphics adapter with OpenGL support Gigabytes free available for installation e DVD Drive e SVGA Color Monitor capable of 1024 x 768 pixel resolution e Color Inkjet or Laser printer e Graphics adapter with OpenGL su
56. ystem however it is a very complex software tool with many technical features and functions This document has been prepared by the ITU to provide an executive overview of the system for those intending to purchase and operate the software in their administrations or agencies It is emphasised that for successful installation and operation of SMS4DC the Administration should have in place existing legal regulatory and technical mechanisms for national spectrum management Also while the system automates many of the technical processes the final choice and decision for the frequency assignment remains with the engineer Therefore operating staff must have sufficient knowledge to understand the regulatory and technical processes that are the operational core of SMS4DC and to interpret correctly the results of the algorithms so that they can make good decisions Further information on national regulatory technical and staff training requirements is given in 2 2 2 6 Version 2 0 of the SMS4DC software has been designed to manage frequency assignments to the Land Mobile Fixed and Broadcasting services and for frequency coordination of Earth stations RR Appendix 7 procedures While some assignment and interference analysis processes are unique to a particular service there are several processes and tools that are applicable to all services To avoid unnecessary repetition and to provide a logical approach the common functions are grouped toget

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