1、 Recommendation ITU-R S.2112-0 (01/2018) Guidelines to conduct bilateral coordination for explicit agreements, in the frequency band 14.5-14.75 GHz for Regions 1 and 2 countries, or in the frequency band 14.5-14.8 GHz for Region 3 countries, in the fixed-satellite service (Earth-to-space) not for fe
2、eder links for the broadcasting-satellite service, in order to protect all existing and planned systems of allocated services in 14.5-14.8 GHz in the territories of those administrations engaging in such agreements S Series Fixed-satellite service ii Rec. ITU-R S.2112-0 Foreword The role of the Radi
3、ocommunication Sector is to ensure the rational, equitable, efficient and economical use of the radio-frequency spectrum by all radiocommunication services, including satellite services, and carry out studies without limit of frequency range on the basis of which Recommendations are adopted. The reg
4、ulatory and policy functions of the Radiocommunication Sector are performed by World and Regional Radiocommunication Conferences and Radiocommunication Assemblies supported by Study Groups. Policy on Intellectual Property Right (IPR) ITU-R policy on IPR is described in the Common Patent Policy for I
5、TU-T/ITU-R/ISO/IEC referenced in Annex 1 of Resolution ITU-R 1. Forms to be used for the submission of patent statements and licensing declarations by patent holders are available from http:/www.itu.int/ITU-R/go/patents/en where the Guidelines for Implementation of the Common Patent Policy for ITU-T
6、/ITU-R/ISO/IEC and the ITU-R patent information database can also be found. Series of ITU-R Recommendations (Also available online at http:/www.itu.int/publ/R-REC/en) Series Title BO Satellite delivery BR Recording for production, archival and play-out; film for television BS Broadcasting service (s
7、ound) BT Broadcasting service (television) F Fixed service M Mobile, radiodetermination, amateur and related satellite services P Radiowave propagation RA Radio astronomy RS Remote sensing systems S Fixed-satellite service SA Space applications and meteorology SF Frequency sharing and coordination b
8、etween fixed-satellite and fixed service systems SM Spectrum management SNG Satellite news gathering TF Time signals and frequency standards emissions V Vocabulary and related subjects Note: This ITU-R Recommendation was approved in English under the procedure detailed in Resolution ITU-R 1. Electro
9、nic Publication Geneva, 2018 ITU 2018 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without written permission of ITU. Rec. ITU-R S.2112-0 1 RECOMMENDATION ITU-R S.2112-01 Guidelines2 to conduct bilateral coordination for explicit agreements, in the fre
10、quency band 14.5-14.75 GHz for Regions 1 and 2 countries, or in the frequency band 14.5-14.8 GHz for Region 3 countries, in the fixed-satellite service (Earth-to-space) not for feeder links for the broadcasting-satellite service, in order to protect all existing and planned systems of allocated serv
11、ices in 14.5-14.8 GHz in the territories of those administrations engaging in such agreements (2018) Scope Following the WRC-15 adoption of allocations allowing the deployment of earth stations in some Region 1 and 2 countries in the frequency band 14.5-14.75 GHz, as listed in Resolution 163 (WRC-15
12、), and in some Region 3 countries in the frequency bands 14.5-14.8 GHz, as listed in Resolution 164 (WRC-15), in the fixed-satellite service (Earth-to-space) not for feeder links for the broadcasting-satellite service, this Recommendation aims at providing a guideline for those administrations which
13、 are engaging in bilateral coordination for explicit agreements, in the framework of RR No. 5.509E, by offering a baseline for discussion to guarantee protection of the existing and planned aeronautical mobile service systems to all administrations involved. The ITU Radiocommunication Assembly, cons
14、idering a) that WRC-15 adopted allocations that allow the deployment of earth stations in some Regions 1 and 2 countries in the frequency band 14.5-14.75 GHz, as listed in Resolution 163 (WRC-15), and in some Region 3 countries in the frequency band 14.5-14.8 GHz, as listed in Resolution 164 (WRC-15
15、), in the fixed-satellite service (Earth-to-space) not for feeder links for the broadcasting-satellite service; b) that the clear intention behind WRC-15 decision was to protect existing and planned systems in the 14.5-14.75 GHz in Region 1 and 2 and in the 14.5-14.8 GHz in Region 3, as per RR No. 5
16、.509F; c) that a set of technical and operational constraints as per RR Nos. 5.509B, 5.509C, 5.509D and 5.509E were agreed for the administrations listed in Resolution 163 (WRC-15) or in Resolution 164 (WRC-15); d) that among the above listed technical and operational constraints, RR No. 5.509E requ
17、ires that, in the frequency band 14.5-14.75 GHz in countries listed in Resolution 163 (WRC-15) and in the frequency band 14.5-14.8 GHz in countries listed in Resolution 164 (WRC-15) in the fixed-satellite service (Earth-to-space) not for feeder links for the broadcasting-satellite service, the locat
18、ion of an earth station shall maintain a separation distance of at least 500 km from the border(s) of other countries unless shorter distances are explicitly agreed by all involved administrations; 1 This Recommendation should be brought to the attention of ITU-R Study Group 5. 2 The course of actio
19、n described in this guiding document does not abrogate the responsibility of administrations to meet the mandatory provisions of the Radio Regulations. 2 Rec. ITU-R S.2112-0 e) that the separation distance of 500 km from the border(s) of other countries was derived to guarantee protection of the exi
20、sting and planned systems taking into account typical characteristics of earth stations in the fixed-satellite service (Earth-to-space) not for feeder links for the broadcasting-satellite service; f) that administrations listed in Resolution 163 (WRC-15) or in Resolution 164 (WRC-15) are given the p
21、ossibility to modify the distance of 500 km by means of bilateral coordination for explicit agreements to be conducted among all the involved administrations, taking into account specific characteristics of the earth stations in the fixed-satellite service (Earth-to-space) not for feeder links for t
22、he broadcasting-satellite service, as well as specific terrain profile in territories of involved administrations; g) that due care must be taken to guarantee protection to all the existing and planned operations in the fixed service, mobile service including aeronautical mobile service, and other s
23、ervices, when any bilateral coordination for explicit agreement is discussed; h) that RR No. 5.509D provided specific mechanism and pfd criteria to guarantee protection to all the existing and planned operations in the fixed service and mobile service including aeronautical mobile service stations o
24、perating over international waters, which may be characterized by the impossibility in conducting bilateral coordination for explicit agreement due to the absence of the territory of any other administration within the 500 km distance; i) that guidance is sought on how to conduct bilateral coordinat
25、ion for explicit agreements, being assured that all existing and planned systems in their territories within the land borderline will be protected, recognizing a) that currently there is no guidance in the Radio Regulations for those administrations seeking to engage in bilateral coordination for ex
26、plicit agreements, listed in Resolution 163 (WRC-15) or in Resolution 164 (WRC-15); b) that such bilateral coordination for explicit agreements, if not carefully conducted and executed, may lead to the creation of interference scenarios which may impact one or multiple existing or planned systems in
27、 the territory of administrations involved in such bilateral coordination; c) that such bilateral coordination for explicit agreements, when properly conducted and executed, taking into account specific characteristics of an earth station in the fixed-satellite service (Earth-to-space) not for feede
28、r links for the broadcasting-satellite service as well as the specific terrain profile in territories of involved administrations, can lead to the establishment of mitigation techniques able to provide protection to existing and planned systems in the territories of all the involved administrations,
29、 despite a resulting distance shorter than 500 km; d) that WRC-15 instructed the Radiocommunication Bureau to develop a software tool capable of confirming that the power-flux density limit, as referred to in noting a), is complied with, noting a) that RR No. 5.509D states that before an administrat
30、ion brings into use an earth station in the fixed-satellite service (Earth-to-space) not for feeder links for the broadcasting-satellite service in some Region 1 and 2 countries in the frequency band 14.5-14.75 GHz, as listed in Resolution 163 (WRC-15) and in some Region 3 countries in the frequency
31、 band 14.5-14.8 GHz, as listed in Resolution 164 (WRC-15), it shall ensure that the pfd produced by this earth station does not exceed 151.5 dB (W/(m2 . 4 kHz), corresponding to an I/N of 6 dB criterion for protecting an aeronautical airborne receiver, produced at all altitudes from 0 m to 19 000 m
32、above sea level at Rec. ITU-R S.2112-0 3 22 km seaward from all coasts, defined as the low-water mark, as officially recognized by each coastal state; b) that RR No. 5.509E states that before an administration brings into use an earth station in the fixed-satellite service (Earth-to-space) not for f
33、eeder links for the broadcasting-satellite service in some Region 1 and 2 countries in the frequency band 14.5-14.75 GHz, as listed in Resolution 163 (WRC-15) and in some Region 3 countries in the frequency band 14.5-14.8 GHz, as listed in Resolution 164 (WRC-15), it shall maintain a separation dist
34、ance of at least 500 km (not accounting for terrain obstruction), for protecting aeronautical airborne and transportable ground receiver, from the land borders (s) of the other countries unless shorter distances are explicitly agreed by those administration; c) that this pfd limit of 151.5 dB (W/(m2
35、 . 4 kHz), produced at all altitudes from 0 m to 19 000 m above sea level was derived to guarantee protection to all the existing and planned operations in the fixed service, mobile service, and the aeronautical mobile service (particularly the airborne receiver); d) that with a known FSS earth stat
36、ion location, to meet interference protection criterion of 6 dB I/N for aeronautical airborne receiver (with altitude from 0 to 19 000 m above ground or sea level) or transportable ground receiver (with altitude from 0 to 15 m above ground level), the separation distance from the FSS earth station a
37、nd other countries border could be less than 500 km depending on the terrain and FSS earth station antenna pointing scenario with respect to the land border (s) of the other countries; e) that the use of pfd limit or other methodologies as guideline for bilateral coordination does not remove the obl
38、igations to meet a set of technical and operational previsions as per RR Nos. 5.509B, 5.509C, 5.509D and 5.509E, with the RR No. 5.509E being applied to the shorter distance resulting from any bilateral coordination for explicit agreements; f) that the pfd guideline is derived from existing technica
39、l characteristics and protection criteria of AMS (Rec. ITU-R M.2089-0) and MS (Rec. ITU-R M.2068-0); g) that the pfd limit depends on the respective position of the envisaged FSS earth station with the territory of the country with which it is willing to engage a bilateral coordination, recommends 1
40、 that, for all configurations where the line of sight between the FSS earth station and the GSO satellite positions does not cross the airspace of any administrations, below the altitude of 8 850 m, not listed in Resolutions 163 (WRC-15) and 164 (WRC-15) but engaged in bilateral meetings, the pfd no
41、t exceeding 151.5 dB (W/(m2 . 4 kHz) from 0 m to 19 000 m above ground level from land borderline may be used as guidance in order to reduce the 500 km minimum distance as defined in RR No. 5.509E; 2 that, for all configurations where the line of sight between the FSS earth station and the GSO satel
42、lite positions crosses the airspace of any administrations, below the altitude of 8 850 m, not listed in Resolutions 163 (WRC-15) and 164 (WRC-15) but engaged in bilateral meetings and the FSS earth station is located at more than 17 km from any part of the border of the country engaging in a bilate
43、ral coordination, the pfd not exceeding 151.5 dB (W/(m2 . 4 kHz) produced at all altitudes from 0 m to 19 000 m above ground level from land borderline may be used as guidance to reduce the 500 km minimum distance as defined in RR No. 5.509E; 3 that, for all configurations where the line of sight be
44、tween the FSS earth station and the GSO satellite positions crosses the airspace of any administrations, below the altitude of 8 850 m, not listed in Resolutions 163 (WRC-15) and 164 (WRC-15) but engaged in bilateral meetings, and the FSS earth station is located at less than 17 km from any part of
45、the border of the country engaging in a bilateral coordination, the pfd not exceeding 151.5 dB (W/(m2 . 4 kHz) produced at 4 Rec. ITU-R S.2112-0 all altitudes from 0 m to 19 000 m above ground level from land borderline and 170.2 dB (W/(m2 . 4 kHz) for the protection of an AMS ground station produce
46、d at all altitudes from 0 m to 15 m above ground level from all land borderline may be used as guidance to reduce the 500 km minimum distance as defined in RR No. 5.509E. 4 that, alternatively to the 17 km distance, mentioned in recommends 2 and 3 above, which is valid for an FSS earth station eleva
47、tion of 10 degrees, should any administration seek for a more geographically specific analysis, equation (1) from Annex 2 may be used in order to derive a reference value for the deployment distance (in km) for the FSS earth station, from the land border of a country not listed in Resolutions 163 (W
48、RC-15) and 164 (WRC-15) but involved in bilateral meetings; 5 that the pfd levels in the above recommends be updated, should there be subsequent updates of I/N criterion to protect AMS or other applicable parameters in Recommendations ITU-R M.2089-0 and ITU-R M.2068-0 that would affect these levels;
49、 6 that the administrations involved in such bilateral coordination for explicit agreements may use the tools developed by the Bureau for verifying RR No. 5.509D in the context of this Recommendation; Annex 1 Formulas for converting I/N value to pfd value for protecting airborne and transportable ground receiver in the aeronautical mobile service Power-flux density limit (pfdlimit) referred in recommends 1 to 4 for protecting airborne receivers and transportable ground receivers operating on land, both operating in the aeronautical mobile service (AMS) are derived from the fo
