Satellite Frequency Coordination. 28 February 2013

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1 Satellite Frequency Coordination 28 February 2013

2 Outline 1) ITU Radio Regulations 2) Frequency Coordination Page 2

3 1) ITU Radio Regulations Page 3

4 The ITU (International Telecommunication Union) ITU is an international organization within which governments and the private sector coordinate global telecommunication networks and services UN specialized agency since 1947,concerned with the development of telecommunication networks and services worldwide 147 years old (founded on 17 May 1865) 193 Member Countries Thailand was the ITU member since private sector entities and academic institutions Page 4

5 ITU Structure The three main sectors: ITU R, ITU T and ITU D ITU R : Radiocommunication Sector ITU T : Telecommunication Standardization Sector ITU D : Telecommunication Development Sector The keyed entities of ITU R which we involves: World Radiocommunication Conference (WRC) The Radio Regulations Board (RRB) The Radiocommunication Bureau (BR) ITU R Study Groups The Radiocommunication Advisory Group (RAG) Page 5

6 ITU-R RADIOCOMMUNICATION SECTOR Aim:.. to ensure rational, equitable, efficient and economical use of the radiofrequency spectrum and satellite orbits Page 6

7 World Radiocommunication Conference Drive by Members (States, Regulators, Operators, Orginizations), > 3,000 participants around the World Working based on Inputs doc. from Member States Held every 3 to 4 years. Revise the Radio Regulations & associated Frequency assignment Govern the use of the radio-frequency spectrum & the geostationary-satellite and N-GSO satellite orbits as International treaty Establish AGENDA 4-6 years in advance by previous WRC Support the meeting by ITU Page 7 7

8 ITU Regions Page 8

9 Radio Regulations (RR) International Treaty, issued and enforced by ITU and its member countries. Changed time to time by the WRC (World Radiocommunication Conference) meetings. Content of RR Articles Appendices Resolutions Recommendations Rules of Procedure Page 9

10 Radio Regulations (RR) Basic agreement on the uses made of radio frequencies 4 Volumes ~2000 pages i. Articles ii. Appendices ITU ITU ITU ITU RR RR RR RR iii. iv. Resolutions Recommendations Rules of Procedure Page 10

11 Content of Radio Regulations Articles : the main rule of the regulations Appendices : the additional info to the article Resolutions : additional agreed principle between member countries Recommendations : guideline, not an obligation Rules of Procedure : the RRB s interpretation and guideline to the BR in application of the Radio Regulations Page 11

12 Major Concerning RRs Article 5 : Frequency Allocations Article 9 : Coordination Procedures Article 11 : Notification Procedures Article 21 : Terrestrial and Space Service Sharing Article 22 : Space Services» Limit of pfd on the earth surface from satellite» Limit of off axis EIRP for FSS» Limit of NGSO satellite Resolution 49 : Administrative Due Diligence Final Acts of WRC : Most up to date changes in RRs after WRC Page 12

13 2) Frequency Coordination Page 13

14 Regulatory Process & Timeline ADVANCE PUBLICATION OF INFORMATION (API) Start of regulatory clock Up to 7 year before operation COORDINATION (CRC) 6-24 months Max after API NOTIFICATION ( N ) in MASTAR REGISTER (International Recognition) & RESOLUTION 49 (RES49) 7 years Max after API N and RES49 Page 14

15 Advance Publication Page 15

16 Request for Coordination Page 16

17 Coordination Page 17

18 Notification Page 18

19 FREQUENCY COORDINATION PROPAGATION OF RADIO WAVES : Laws of physics Radio waves do not stop at national borders INTERFERENCE : Possible between radio stations of different countries, this risk is high in Space Radiocommunications RADIO REGULATIONS : One of its main purposes Interference free operation of RadioComms COORDINATION: Obligatory NEGOTIATION between Administrations to arrive at interference free operation Process and Procedure described in RR. Page 19

20 GSO Satellites INTERFERENCE Frequency Coordination N-GSO Satellites TRANSMITTING EARTH STATION TERRESTRIAL STATION RECEIVING EARTH STATION Page 20

21 Geostationary Orbit Congestion ge Page 21 21

22 Frequency Coordination ADVANCE PUBLICATION OF INFORMATION (API) C/I COORDINATION (CRC) 3 ~ 6 years Affected Administrations Page 22

23 Related ITU-R Recommendations ITU R S.740 : Technical Coordination Methods outlined various concepts of interference calculation ITU R S.741 : C/I Calculation Detailed technical method to calculate the C/I ITU R S.738 : Delta T/T Calculation Detail technical method to calculate delta T/T ITU R S.580 and 465 : sidelobe antenna pattern ITU R S.524 : off axis EIRP limitation ITU R P.618, 837, 838, 839 : Propagation Model (Rain Attenuation) Several Others : please get through the ITU R S Series Page 23

24 The key concern of frequency coordination Coordination & Notification Worst Case Sharing Scenario Impractical maximum & minimum operating margins Wide range of unused frequency bands Unspecific Coverage Global Beam In practice are never applied. Page 24

25 Actual VS Filing Page 25

26 Coordination Arc (Rev.WRC-12) Reduce Coordination Arc TABLE 5 1 (WRC 12) Technical conditions for coordination (see Article 9) C band: from 10 to 8 deg Ku band: from 9 deg to 7 deg Ka band: No change (8 deg) BSS band GHz : +/ 12 deg (Regions 1 and 3) Page 26

27 Bringing into use (BIU) Why do we need to clarify BIU? Paper Satellite Long term priority with no actual satellite The current ITU database not true reflection of spectrum & orbit utilization No usable FSS spectrum/orbit resource in C & Ku is available for new satellite operators Some orbit/spectrum resource is being warehoused with no actual and planned use Block Newcomers & smaller companies ITU procedures need to be improved to counter this trend Page 27 27

28 Bringing into use (Rev.WRC-12) No.11.44B : A frequency assignment to a space station in the geostationary satellite orbit shall be considered as having been brought into use when a space station in the geostationary satellite orbit with the capability of transmitting or receiving that frequency assignment has been deployed and maintained at the notified orbital position for a continuous period of 90 days. The notifying administration shall so inform the Bureau within 30 days from the end of the ninety day period Page 28

29 Suspension (Rev.WRC-12) No.11.49: Wherever the use of a recorded frequency assignment to a space station is suspended for a period exceeding six months, the notifying administration shall, as soon as possible, but no later than six months from the date on which the use was suspended, inform the Bureau of the date on which such use was suspended. When the recorded assignment is brought back into use, the notifying administration shall, subject to the provisions of No when applicable, so inform the Bureau, as soon as possible. The date on which the recorded assignment is brought back into use shall be not later than three years from the date of suspension. (WRC 12) The date of bringing back into use of a frequency assignment to a space station in the geostationary satellite orbit shall be the date of the commencement of the ninety day period defined below. A frequency assignment to a space station in the geostationary satellite orbit shall be considered as having been brought back into use when a space station in the geostationary satellite orbit with the capability of transmitting or receiving that frequency assignment has been deployed and maintained at the notified orbital position for a continuous period of ninety days. The notifying administration shall so inform the Bureau within thirty days from the end of the ninety day period. (WRC 12) Page 29

30 Thank You

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