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For comment by circulation RSAC Paper 8/2007 Hong Kong’s Positions on Agenda Items to be Discussed at World Radiocommunication Conference 2007 Purpose This paper seeks Members’ comments on Hong Kong’s positions on the agenda items to be discussed at World Radiocommunication Conference 2007 (WRC-07) of the International Telecommunication Union (ITU) to be convened in Geneva from 22 October to 16 November 2007. Background 2. In December 2006, the Office of the Telecommunications Authority (OFTA) circulated a RSAC paper 1/2007 to Members, inviting views on OFTA’s proposed preliminary Hong Kong positions on WRC-07 issues. With a view to finalizing the Hong Kong’s position, OFTA participated several WRC preparatory meetings organised by Asia Pacific Telecommunity (APT) and International Telecommunication Union and attended several meetings with Ministry of Information Industry (MII) of China in order to obtain more updated information and exchange information with other administrations in Asia on WRC issues. Hong Kong’s Positions 3. Having consulted the respective Government departments and relevant stakeholders, and taking into account the discussions with the MII and other administrations in Asia, OFTA has updated and revised the Hong Kong’s positions on the WRC-07 agenda items which are attached in Annex 1. Advice Sought 4. Members are invited to give their comments on Hong Kong’s positions given in Annex 1 ...

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• Publié par: Vowyong
• Nombre de lectures: 66
• Langue: English

Extrait

RSAC Paper 8/2007

For comment by circulation     Hong Kong’s Positions on Agenda Items to be Discussed at World Radiocommunication Conference 2007

    Purpose    This paper seeks Members’ comments on Hong Kong’s positions on the agenda items to be discussed at World Radiocommunication Conference 2007 (WRC-07) of the International Telecommunication Union (ITU) to be convened in Geneva from 22 October to 16 November 2007.     Background   2. In December 2006, the Office of the Telecommunications Authority (OFTA) circulated a RSAC paper 1/2007 to Members, inviting views on OFTA’s proposed preliminary Hong Kong positions on WRC-07 issues. With a view to finalizing the Hong Kong’s position, OFTA participated several WRC preparatory meetings organised by Asia Pacific Telecommunity (APT) and International Telecommunication Union and attended several meetings with Ministry of Information Industry (MII) of China in order to obtain more updated information and exchange information with other administrations in Asia on WRC issues.     Hong Kong’s Positions   3. Having consulted the respective Government departments and relevant stakeholders, and taking into account the discussions with the MII and other administrations in Asia, OFTA has updated and revised the Hong Kong’s positions on the WRC-07 agenda items which are attached in Annex 1.     Advice Sought   4.    are invited to give their comments on Hong Kong’s positions given in Members Annex 1 before OFTA finalizes the Hong Kong positions for WRC-07.   5. It should be noted that Hong Kong is not a Member State of the ITU and does not have the right to present our views at WRC without the consent of MII. The

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finalized Hong Kong positions will be our views conveyed to MII on the various issues at WRC-07.           Office of the Telecommunications Authority August 2007

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Annex 1

  Agenda Item 1.1   requests from administrations to delete their country footnotes or to have their country name deleted from footnotes, if no longer required, in accordance with Resolution26 (Rev.WRC-97)     KEY ISSUES AND METHODS TO SATISFY THE AGENDA ITEM   Administrations are urged to review footnotes periodically and to propose the deletion of their country footnotes or of their country names from footnotes, as appropriate. Since this agenda item is outside the scope of the Conference Preparatory Meeting (CPM), the CPM Report has not addressed this item.     HONG KONG’s POSITION   From latest discussions with MII, Hong Kong understands that China has no intention to delete any country footnotes in the Radio Regulation (RR). Therefore, there will be no impact to Hong Kong.

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    Agenda Item 1.2   to consider allocations and regulatory issues related to the Earth exploration-satellite (passive) service, space research (passive) service and the meteorological-satellite service in accordance with Resolutions 746 (WRC-03) and 742 (WRC-03)     KEY ISSUES AND METHODS TO SATISFY THE AGENDA ITEM   This agenda item covers three issues.   Issue Aof the current allocation to the meteorological-satelliteaddresses the extension service (MetSat) (space-to-Earth) in the band 18.1 – 18.3 GHz by an additional of 100 MHz in the sub-bands 18.0 – 18.1 GHz or 18.3 – 18.4 GHz to support transmissionof high speed data from high-resolution sensors. ITU-R’s studies on sharing between MetSat and other affected services have been conducted. In particular, ITU-R’s studies indicate that sharing between geostationary MetSat and fixed service (FS) (point-to-point and point-to-multipoint) systems in the MetSat expansion band will be possible by applying the same power flux density as given in Table 21-4 of RR. Three methods are proposed in the CPM Report.   Method A1: An extension to the band 18.0 – 18.1 GHz.   Method A2: An extension to the band 18.0 – 18.1 GHz by adding a new footnote withno protection for MetSat from the broadcasting satellite service (BSS) and no restrictions on BSS feeder-link earth stations.   Method A3: An extension to the band 18.3 – 18.4 GHz.   Issue Bbetween the Earth exploration-satellite service (EESS) (passive)addresses sharing and space research service (SRS) (passive) and the FS and mobile service (MS) in the band 10.6 – 10.68 GHz. Since the provisions given in the current RR No 5.482 1  may not be sufficient to ensure the protection of the EESS (passive) and SRS (passive) in the band 10.6 – 10.68 GHz, sharing criteria need to be defined. Sharing scenarioshave been analysed and possible technical limits to allow sharing have been identified. Three                                                   1   In the band 10.6-10.68 GHz, stations of the fixed and mobile, except aeronautical mobile, services shall be limited to a maximum equivalent isotropically radiated power of 40 dBW and the power delivered to the antenna shall not exceed –3 dBW. These limits may be exceeded subjectto agreement obtained under No. 9.21. The restrictions are not applicable to a number of administrations including China.

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methods are proposed in the CPM Report.   Method B1: Introduction of single entry emission limits into the RR. Those limits would be non-retroactive for the terrestrial systems brought into use before WRC-07.   Method B2: Use of the current limits in the RR with additional constraints. Those limits should be non-retroactive for the FS and MS systems brought into use before WRC-07.   Method B3: Encouragement of administrations to apply the constraints and techniques specified in the appropriate Recommendations to facilitate sharing of the 10.6 – 10.68 GHz band by the FS, MS and EESS (passive).   Issue CEESS (passive) and SRS (passive) and the FS and MSaddresses sharing between in the band 36 – 37 GHz. Similar to Issue B, sharing scenarios have been analysed and mitigation techniques have been identified. Two methods are proposed in the CPM Report.   Method C1: Introduction of a single entry emission limits into the RR. Those limits would be non-retroactive for the terrestrial systems brought into use before WRC-07.   Method C2: Encouragement of administrations to apply the constraints and techniques specified in the appropriate Recommendations.     HONG KONG’s POSITION   Issue A      In Hong Kong, the band 17.7 – 18.4 GHz is currently allocated on a co-primary basis for FS and fixed satellite service (FSS). The band 18.14 – 18.75 GHz is being used by the multi-point microwave distribution systems (MMDS) for distributing cable television service via wireless means. Since the current power flux density limits as given in RR for the MetSat in the 18 GHz band are sufficient to protect the FS, the extension of the MetSat allocation will not cause harmful interference to the MMDS in Hong Kong. Hong Kong supports the extension of the current allocation to the MetSat by an addition of 100 MHz. As there is no existing user in the band 18.0 – 18.1 GHz, Hong Kong prefers to extend the 100 MHz in the band 18.0 – 18.1 GHz (i.e. Method A1).   Issue B   In Hong Kong, the band 10.6 – 10.68 GHz is allocated to FS and radiolocation service.

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Hong Kong prefers Method B3 as it would give more flexibility for administrations in applying mitigation techniques to future terrestrial systems.   Issue C      The band 36 – 37 GHz is currently unplanned in Hong Kong. Considering thatthe band 36 – 37 GHz is used on a world-wide basis for the study of global water circulation by monitoring the status of rain, snow, ocean ice and water vapour, Hong Kong shares the view of World Meteorological Organization (WMO) that the passive sensors using this band should be protected. Hong Kong’s position in adopting which method is neutral.    

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Agenda Item 1.3   in accordance with Resolution 747 (WRC-03), consider upgrading the radiolocation service to primary allocation status in the bands 9000–9200 MHz and 9300–9500 MHz and extending by up to 200 MHz the existing primary allocations to the Earth exploration-satellite service (EESS) (active) and the space research service (SRS) (active) in the band 9500–9800 MHz without placing undue constraint on the services to which the bands are allocated     KEY ISSUES AND METHODS TO SATISFY THE AGENDA ITEM   This agenda item covers two major issues.   Issue Athe radiolocation service (RLS) to primary allocation statusaddresses upgrading in the bands 9000 – 9200 MHz and 9300 – 9500 MHz. There is a need to provide contiguous spectrum for the RLS allocated on a primary basis world-wide in order to provide adequate spectrum for new radar systems. ITU-R’s studies show that the sharing between the radiolocation and radionavigation systems in the bands 9000 – 9200 MHz and 9300 – 9500 MHz is feasible. Thus, the RLS can be upgraded to primary status in the bands 9000 – 9200 MHz and 9300 – 9500 MHz with no adverse impacton the radionavigation service (RNS). The CPM Report provides two methods.   Method A1: The RLS allocation is upgraded to primary status with the inclusion of regulatory text giving the RNS priority over the RLS.   Method A2 : The RLS allocation is upgraded to primary status without the additional regulatory text, thereby placing the RLS and RNS on equal status.   Issue Baddresses the extension of the Earth exploration-satellite service (EESS) (active) and space research service (SRS) (active) allocations in the band 9500 – 9800 MHz by 200 MHz. There is a need to allocate an increase of 200 MHz for EESS (active) and SRS (active) in order to satisfy the requirements for improved resolution and performance. ITU-R’s studies show that the band 9300 – 9500 MHz can be allocated to the EESS (active) without any adverse impact on the radiodetermination service (RDS). ITU-R’s studies also indicate that the radiodetermination systems operating in the band 9800 – 10000 MHz will not cause excessive interference to the EESS (active) systems that may operate in this band. The CPM Report proposes two methods.   Method B1: This method provides a primary allocation to the EESS (active) and SRS (active) in the band 9300 – 9500 MHz.   Method B2: This method provides a primary allocation to the EESS (active) and SRS

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(active) in the band 9800 – 10000 MHz.     HONG KONG’s POSITION   Issue A   In Hong Kong, the band 9000 – 9200 MHz is allocated to the aeronautical radionavigation service (ARNS) whereas the band 9300 – 9500 MHz is allocated to the RNS and RLS. Hong Kong Observatory is studying the possibility of implementing a meteorological radar around 9 GHz for improving the monitoring of rainstorms. The ITU-R’s studies show that compatibility between the RNS and the RLS in the bands 9000 – 9200 MHz and 9300 – 9500 MHz is feasible. In view of above, Hong Kong supports the upgrading of the RLS to primary status in the band 9000 – 9200 MHz or 9300 – 9500 MHz. Hong Kong is of the view that both RNS and RLS are equally important. Therefore, Hong Kong prefers Method A2 (i.e. placing the RLS and RNS on equal status).   Issue B   In Hong Kong, the band 9800 – 10000 MHz is unplanned. In view of the importance of EESS and SRS, Hong Kong supports the extension of 200 MHz to EESS and SRS. It would not cause adverse impact to Hong Kong if the extended allocation is either in the band 9300 – 9500 MHz (Method B1) or 9800 – 10000 MHz (Method B2). Therefore, Hong Kong’s position in adopting which method is neutral.    

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Agenda Item 1.4   to consider frequency-related matters for the future development of IMT-2000 and systems beyond IMT-2000 taking into account the results of ITU-R studies in accordance with Resolution 228 (Rev.WRC-03)     KEY ISSUES AND METHODS TO SATISFY THE AGENDA ITEM   This agenda item discusses frequency-related issues for the future development of IMT-2000 and IMT-Advanced (IMT 2 ) systems.   Terrestrial Component   The CPM Report identifies the following candidate bands for use by the terrestrial component of IMT systems: 410 – 430 MHz, 450 – 470 MHz, 470 – 806 (862 MHz for Region 1), 2300 – 2400 MHz, 2700 – 2900 MHz, 3400 – 4200 MHz and 4400 – 4990 MHz. All or portions of the candidate bands could be identified for use by administrations wishing to implement IMT systems. As proposed in the CPM Report, the identification does not preclude the use of the identified bands by any application of the services to which they are allocated and does not establish priority in the Radio Regulation (RR). If a candidate band which has not been allocated to mobile service on a primary basis is identified for IMT systems, modification of the Table of Frequency Allocations in the RR will be needed.   Satellite Component   With regard to the satellite component, the CPM Report proposes to identify the bands 1518 – 1525 MHz and 1668 – 1675 MHz for the satellite component of IMT systems.     HONG KONG’s POSITION   Terrestrial Component   410 – 430 MHz and 450 – 470 MHz   The bands 410 – 430 MHz and 450 – 470 MHz are being widely used in Hong Kong as land mobile services including emergency services. Implementation of these bands for IMT systems would adversely affect the existing services in Hong Kong. Therefore, Hong Kong does not support identifying these bands for IMT systems.                                                   2 “IMT” comprises both IMT-2000 and IMT-Advanced.

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  470 – 806 MHz   The band 470 – 806 MHz is widely used in Hong Kong for terrestrial TV broadcasting service. Portions of the channels will be used for digital terrestrial TV or mobile TV. Digital terrestrial TV will be launched before the end of 2007. Spectrum in this band could be released for other services including IMT after the switch-off of the analogue TV systems sometime after 2012. Hong Kong supports identifying this band for IMT systems.   2300 – 2400 MHz   Hong Kong is consulting the industry on the proposed use of the band 2300 – 2400 MHz for public mobile and broadband wireless access (BWA) services. Hong Kong shares with some administrations’ view that this band has similar propagation characteristics with IMT. Noting that ITU-R Working Party 8F has forwarded for approval a new terrestrial radio interface for IMT-2000 (OFDMA TDD WMAN) as a specific subset of WiMAX, Hong Kong supports identifying the band 2300 – 2400 MHz for IMT systems.   2700 – 2900 MHz   ITU-R’s studies so far show that interference between the existing radars and IMT-2000 systems in the band 2700 – 2900 MHz will occur to aeronautical radionavigation systems and meteorological radars on a co-channel basis. In Hong Kong, the band 2700 – 2900 MHz is allocated for aeronautical radionavigation and meteorological aids. At present, the band is mainly used by meteorological radars. Therefore, Hong Kong does not support identifying this band for IMT systems.   3400 – 4200 MHz   In the 5 th  of the APT Conference Preparatory Group for WRC-2007 Meeting (APG2007-5), APT does not support the identification of any parts of the band 3400 – 4200 MHz for IMT. APT considers that there are incompatibility issues between IMT and the existing fixed service and fixed satellite service in many countries. Besides, identifying this band for IMT would further restrict the development and continuity of the existing services. Hong Kong shares the majority views of APT and does not support identifying this band for IMT systems.   4400 – 4990 MHz   In Hong Kong, the band 4400 – 4990 MHz is being used by the essential services. Implementation of this band for IMT systems would adversely affect the existing services in Hong Kong. Therefore, Hong Kong does not support identifying this band for IMT

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systems.   Satellite Component   1518 – 1525 MHz and 1668 – 1675 MHz   Currently, the bands 1518 – 1525 MHz and 1668 – 1675 MHz are exempted from licensing in Hong Kong. The purpose of the exemption is to facilitate the operation of mobile-satellite earth stations. Hong Kong supports that the bands 1518 – 1525 MHz and 1668 – 1675 MHz would be identified for the use of satellite systems of the IMT.    

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