1. BR/TSD Москва 2004 Workshop for CEE, CIS and Baltic States BCD Reference Planning Concept Reference Planning Configurations and Reference Networks Сентябрь 2004 Москва David Botha

2. BR/TSD Москва 2004 Workshop for CEE, CIS and Baltic States BCD What is an RPC? An RPC is an idealised abstract configuration of technical characteristics that can be used for conference planning purposes. An RPC describes the sum of all relevant technical aspects of a broadcasting service implementation required for planning purposes and eventually for the calculations related to plan modifications during Plan implementation. An RPC is not associated with any particular system variant or a real network, but can represent a large number of real implementations.

3. BR/TSD Москва 2004 Workshop for CEE, CIS and Baltic States BCD Why use an RPC? Thousands of planning configurations Reception modes for DVB-T: Portable reception (indoor / outdoor) Fixed reception (roof top) Mobile reception Reception modes for T-DAB: Mobile reception Portable indoor reception DVB-T System variants Modulation type and code rate (15 types) Channel bandwidth 7 and 8 MHz (15 x 2 types) Guard intervals (1/4, 1/8, 1/16, 1/32) (15 x 2 x 4 = 120 variant types)

4. BR/TSD Москва 2004 Workshop for CEE, CIS and Baltic States BCD Derivation of RPCs Table 3.6-1 Aspects of DVB T planning configurations AspectElement Reception modeFixed roof-level Portable outdoor Portable indoor Mobile Coverage quality (in terms of percentage of locations) 70% 95% 99% Network structureMFN (single transmitter) SFN Dense SFN DVB T system variant from QPSK-1/2 to 64-QAM-7/8 Frequency bandBand III (200 MHz) Band IV (500 MHz) Band V (800 MHz)

5. BR/TSD Москва 2004 Workshop for CEE, CIS and Baltic States BCD Derivation of RPCs continued Representative Planning Configurations E med rep calculated for band III (200 MHz), IV (500 MHz) and V (800 MHz) Rep. Plan. Conf. Rece ption mode fix po mob pi Mod.64 QAM 64 QAM 16 QAM 64 QAM QPSK16 QAM 16 QAM 16 QAM Code Rate 2/33/42/3 1/22/3 Loc. Prob. 95% 99% 70%95% Required C/N (dB) 20.121.617.222.313.015.517.2 Data capacity from to (MBit/s) 19.9 24.1 22.4 27.1 13.3 16.1 19.9 24.1 6.6 8.0 10.0 12.1 13.3 16.1 13.3 16.1

6. BR/TSD Москва 2004 Workshop for CEE, CIS and Baltic States BCD Derivation of RPCs continued RRC-04 Reference Planning Configurations DVB T grouping in terms of reception mode: fixed reception; portable outdoor reception, mobile reception and lower coverage quality portable indoor reception; higher coverage quality portable indoor reception. For reference frequencies: 200 MHz (VHF); 650 MHz (UHF).

7. BR/TSD Москва 2004 Workshop for CEE, CIS and Baltic States BCD Derivation of RPCs continued RRC-04 Reference Planning Configurations RPC 1RPC 2RPC 3 Groupfixmob, po, pipi Plan. Conf. 64QAM 2/3 fix 95%loc 64QAM 3/4 fix 95%loc QPSK 2/3 mob 99%loc 16QAM 1/2 mob 99%loc 64QAM 2/3 po 95%loc 16QAM 2/3 po 95%loc 16QAM 2/3 pi 70%loc 16QAM 2/3 pi 95%loc C/N (dB) 20.121.613.015.522.317.2 E med ref calculated for VHF (200 MHz) and UHF (650 MHz)

8. BR/TSD Москва 2004 Workshop for CEE, CIS and Baltic States BCD Summary of RRC-04 RPCs for DVB-T RPCs for DVB T RPC RPC 1RPC 2RPC 3 Reference location probability 95% Reference C/N (dB) 211917 Reference (E med ) ref (dB(µV/m)) at 200 MHz 506776 Reference (E med ) ref (dB(µV/m)) at 650 MHz 567888 Typical data capacity (Mbit/s) 20-278-2413-16 (E med ) ref : minimum median equivalent field strength RPC 1: RPC for fixed roof-level reception RPC 2: RPC for portable outdoor reception or lower coverage quality portable indoor reception or mobile reception RPC 3: RPC for higher coverage quality for portable indoor reception.

9. BR/TSD Москва 2004 Workshop for CEE, CIS and Baltic States BCD Application of RRC-04 RPCs for DVB-T Interpolation of Reference (E med ) ref (f) Correction factor Fixed reception20log(f/fr) Portable and mobile reception 30log(f/fr) Protection ratios from ITU-R Rec. BT.1368 Representative system variant RPC 164QAM 3/4 RPC 216QAM 3/4 RPC 316QAM 2/3

10. BR/TSD Москва 2004 Workshop for CEE, CIS and Baltic States BCD RRC-04 RPCs for T-DAB Table 3.6-3 RPCs for T DAB (E med ) ref : minimum median equivalent field strength RPC 4: RPC for mobile reception RPC 5: RPC for portable indoor reception Reference planning configuration RPC 4RPC 5 Location probability 99%95% Reference C/N (dB) 15 Reference (E med ) ref (dB(µV/m)) at 200 MHz 6066 Protection ratios in ITU-R Rec. BS.1660

11. BR/TSD Москва 2004 Workshop for CEE, CIS and Baltic States BCD Implications when using RPCs Advantages Disadvantages Particularly useful when allotment planning is used Does not require detail planning prior to notification Allows for the selection of a specific system variant at a later stage Simplifies planning by reducing the number of configurations Not all technical criteria need be available at planning time, e.g. protection ratios Selected RPCs may not exactly represent your requirement Administration still need to make some basic decisions before planning

12. BR/TSD Москва 2004 Workshop for CEE, CIS and Baltic States BCD What is a Reference network (RN)? An RN is an idealised representation of real network implementations. Reference networks exhibit a high degree of geometrical symmetry and homogeneous transmitter characteristics. Reference networks are characterised by the parameters: Number of transmitters Distance between transmitters Transmitter network geometry Transmitter power Transmitter antenna height Transmitter antenna pattern Service area

13. BR/TSD Москва 2004 Workshop for CEE, CIS and Baltic States BCD Why use an RN? Allotments have no transmitters associated An RN represent the interference potential of an allotment Single transmitter case Preferable to use real transmitter characteristics and assignments Reference Single Frequency Networks Generally larger service areas than a single transmitter All transmitters may not be known during the establishment of a frequency plan Compatibility analysis and synthesis based on the use of a suitable RN Plan modifications will rely on RN for allotments not yet converted to assignments

14. BR/TSD Москва 2004 Workshop for CEE, CIS and Baltic States BCD Definition of Reference Networks General design considerations: RNs defined in terms of the service application Effective antenna heights set to 150 metres Field strength prediction based on ITU-R Rec. P.1546-1 Statistical field strength summation using k-LNM method Design based on noise limited coverage, use power margin to obtain interference limited coverage Hexagonal service areas Hexagonal or triangular network configurations Open and closed network structures For open network structures the service area is 15% larger than the network structure

15. BR/TSD Москва 2004 Workshop for CEE, CIS and Baltic States BCD Definition of Reference Networks continued RN categories: Reference network 1234 ApplicationLarge service area SFN Small service area SFN, dense SFN Small service area SFN (urban) Semi-closed small service area SFN where interference should be limited Service area diameter (km) 161/115/9253/33/33 46/29/29 Distance between transmitters (km) 70/50/4040/25/25 Type of network Open Semi-closed DVB-T

16. BR/TSD Москва 2004 Workshop for CEE, CIS and Baltic States BCD Definition of Reference Networks continued RN categories: Reference network for RPC 5RPC 6 ApplicationMobilePortable indoor Service area diameter (km) 120 Distance between transmitters (km) 60 Type of networkClosed T-DAB

17. BR/TSD Москва 2004 Workshop for CEE, CIS and Baltic States BCD Implications when using RNs Advantages Disadvantages Can represent the interference potential of allotments Does not require detail planning prior to notification Allows for the selection of a specific system variant at a later stage Not all technical criteria need be available at planning time, e.g. protection ratios for specific system variants Selected RNs may not exactly represent unique requirements Administration still need to make some basic decisions before planning

18. BR/TSD Москва 2004 Workshop for CEE, CIS and Baltic States BCD Examples of RNs FIGURE A.3.7-3 RN 2 (small service area SFN) FIGURE A.3.7-7 Geometry of the RN

19. BR/TSD Москва 2004 Workshop for CEE, CIS and Baltic States BCD Notifying allotments For DVB-T: Define and notify allotment geographical area Select the band (VHF or UHF) Select the reception mode (fixed, mobile or portable, or higher quality portable indoor) Select the RPC Select the type of application (Large SFN, small SFN, small SFN urban or semi-closed small SFN) Select the RN Notify the allotment

20. BR/TSD Москва 2004 Workshop for CEE, CIS and Baltic States BCD Notifying allotments continued For T-DAB: Define and notify allotment geographical area Select the reception mode (mobile or portable indoor) Select the RPC and RN Notify the allotment

21. BR/TSD Москва 2004 Workshop for CEE, CIS and Baltic States BCD Спасибо

22. BR/TSD Москва 2004 Workshop for CEE, CIS and Baltic States BCD