Presentation on theme: "Agenda An Overview on Radio Frequency Spectrum World Division on Frequency Allocation International allocation Table/ frequency allocations to services."— Presentation transcript:
Agenda An Overview on Radio Frequency Spectrum World Division on Frequency Allocation International allocation Table/ frequency allocations to services Radio Regulations (ITU-R RR) Coordination and notification procedures National Frequency allocation Table Frequency assignment and Licensing Spectrum Management System For Developing Countries Administrative Functions Technical Functions GIS Functions
Overview Propagation modes and usages for various frequency bands BandFrequencyModeRangeBW Interference Volume Usage VLF3 - 30 kHzwave guideseveral 1000 km very limited wide spreadWorldwide, long range radio navigation and strategic communications LF30 - 300 kHzground wave, sky wave several 1000 kmlimited wide spreadLong range radio navigation and strategic communications MF0.3 - 3 MHzground wave, sky wave a few 1000 km moderatewide spreadMedium range pt. to pt., broadcasting and maritime mobile HF3 - 30 MHzsky waveup to several 1000 km widewide spreadLong and short range pt. to pt., global broadcasting, mobile. VHF30 - 300 MHzspace wave, troposphere scatter, diffraction up to a few 100 km very wideconfinedShort and medium pt. to pt., mobile, LAN, audio and video broadcasting, personal communications UHF0.3 - 3 GHzspace wave, tropospheric scatter, diffraction, line-of-sight Generally less than 100 km very wideconfinedShort,medium & long pt. to pt., mobile, LAN, audio and video broadcasting, personal communications, satellite communications SHF3 - 30 GHz line-of-sight 30 km; several 1000 km for multihop and satellite very wide up to 1 GHz generally confined Medium to short range pt.to pt.,audio and video broadcasting, LAN, mobile/personal communications, satellite communications EHF30 - 300 GHzline-of-sight20 km; several 1000 km for multihop and satellite very wide up to 10 GHz generally confined Short range pt. to pt., microcellular, LAN and personal communications, satellite communications Chap. 5 SMS Handbook (At VLF a wave guide mode between the ionosphere and the Earth allows propagation over) global distances.
Overview Categories of Services & allocations Primary and secondary services Service the name of which are printed in “capitals” (example: FIXED) are called “Primary” Services Service the name of which are printed in “normal characters” (example: Mobile) are called “secondary” Services Additional remarks shall be printed in normal characters ( MOBILE except aeronautical mobile) Stations of a secondary service: Shall not cause harmful interference to stations of primary services to which frequencies are already assigned or may be assigned at a later date; cannot claim protection for harmful interference from stations of a primary service to which frequencies are already assigned or may be assigned at a later date can claim protection for harmful interference from stations of the same or other secondary service(s) to which frequencies may be assigned at later date.
Overview Frequency Assignment and Licensing Frequency arrangement options - Homogeneous, - Uniform, - Non-uniform
License request Registration of the application in the administrative database and initialization of the workflow management EMC analysis The folder is transmitted to coordination study and ITU sending. Notifications forms generation and registration in ITU database The folder is transmitted for license issuing and invoice generation. The relevant documents are provided to the spectrum user. License and invoice emission Frequency assignment The frequency is not available because it is protected by ITU agreement. Verification of international coordination requirements Administrative study Folder creation Folder processing. Transmission to administrative and technical studies Spectrum user The folder is closed and archived. The licensing process is over. The request is not accepted for an ADM reason. License and invoice sending. Frequency assignment & Licensing General procedure for the frequency assignment and licensing process Source : ITU-Handbook on SMS
SMS4DC Annex I : Action Plan (rev.2) for development of SMS4DC Milestone Activities Mar. 2005 Apr. 05 May 05 Jun 05 Jul 05 Aug. 05 Sep. 05 Oct. 05 Nov. 05 Dec. 05 Jan. 2006 Feb. 2006 Design Review Meeting 14-16 Provisional test for terrestrial segment of SMS4DC (annexes II & III) 1 9-11 Beta test for terrestrial segment + design review meeting / provisional test for Space segment Annex 7) 2 + delivery of user manual & training material in English. 14-18 Trial test of SMS4DC (country case study) in Guinea Final Acceptance Test for Terrestrial & possibly final test for Space segment) Delivery of SMS4DC in English + user manual & training material as an ITU property 1 Provisional test for items listed in Annex II & III. 2 Software developers would try to make the space segment ready for provisional acceptance test. Note: French version of SMS4DC will be ready before WTDC-06 and the other 4 languages if required by the end of 2006.
Deactivation Push button for deactivation of activated buttons. The shape of mouse is changed to normal by using this button. Go to Geo- directions Push buttons for navigation of DEM one tile toward one of the West, North, South and East directions each time, respectively. Draw Line Toggle button to draw line between two points and to activate functions based on predefined line. Draw Polyline Toggle button for poly line drawing and activation of relevant functions based on predefined poly line. Draw Box Toggle button to create rubber-band box for selection of a rectangular area on DEM to activate area dependent functions. Draw Line from DatabasePush button for drawing a line between two stations and for activation of functions based on predefined line, using database of stations. Draw Box from Database Push button for drawing a square box containing a station at its middle for activation of functions based on predefined area, using database of stations.. Draw Profile Push button for drawing of path profile along depicted line. Poly line drawing does not activate this button. Add Station Toggle button to add a station under one of the SMS4DC supported services. Move Station Toggle button to move a station to a new location using mouse. Click mouse right button on the station and drag its symbol to the concerned location while holding mouse right click. Refresh Push button to refresh screen display and to remove overlaid area-calculation results from DEM. Calculation Overlay Push button to overlay area-calculation results on DEM. Once an area selected on map (using box drawing buttons) this button will be activated. Show Legend Toggle button to show or remove legend of activated display. An appropriate legend is displayed depending to the activated display, i.e. DEM color legend for DEM view, field strength color legend for area calculation result window and etc. Toolbar of SMS4DC desktop
Some of SMS4DC Administrative functions Menu of User-ID and Password management
Interface to the external resources IDWM BR IFIC RR App.7 WinBASMS SMS4DC software External Resources Technical & Administrative Modules Core of SMS4DC Interface to the external databases LIBR ARIE S MAP S External Database SMS4DC Software Structure
User view of administrative data Name, address, contact and classification Effective height Owner License Station Equipment Link Antenna Frequency Pattern 1:n 1:1 License ID, status, duration, etc. Receiving area information Station name, location, type and etc. Assigned frequency, reference frequency, bandwidth, etc. Name, model, radiated power, serial number and etc. Name, gain, pattern, Beam width, etc. Azimuth and effective height 1:1 InvoicesPayments 1:n
The SMS4DC is able to: § Import antenna pattern & its characteristic from antenna library; § Modify the existing antennas in the library for generation of new patterns; § Completely generate a new antenna pattern Antenna Tools
Effective height of an antenna can be calculated based on ITU-R Recommendations P.1546 or P.370. This parameter is needed for Field strength calculations in point to area services (i.e. Broadcasting, land-mobile…). Effective height of antenna calculation
Network Analysis (Maximum field strength & best server) Coverage areas obtained through individual calculation for each station could be combined to figure out overall radio coverage of a multi-station network. Users are able to distinguish the best serving station for each point inside the network service area, by analysis of network radio coverage area. Above Figure displays sample analysis result for a WLL (wireless local loop) network built up from 12 BTSs (base station transceivers).
Report of coordination distance in HTML format for a broadcasting station