1、 Recommendation ITU-R F.2086-0 (09/2015) Deployment scenarios for point-to-point systems in the fixed service F Series Fixed service ii Rec. ITU-R F.2086-0 Foreword The role of the Radiocommunication Sector is to ensure the rational, equitable, efficient and economical use of the radio-frequency spe
2、ctrum 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 regulatory and policy functions of the Radiocommunication Sector are performed by World and Regional Radiocommunicatio
3、n 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 ITU-T/ITU-R/ISO/IEC referenced in Annex 1 of Resolution ITU-R 1. Forms to be used for the submission of patent state
4、ments 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/ITU-R/ISO/IEC and the ITU-R patent information database can also be found. Series of ITU-R Recommendations (Also a
5、vailable 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 (sound) BT Broadcasting service (television) F Fixed service M Mobile, radiodetermination, amateur and related satell
6、ite 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 between fixed-satellite and fixed service systems SM Spectrum management SNG Satellite news gathering TF Time signal
7、s 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. Electronic Publication Geneva, 2015 ITU 2015 All rights reserved. No part of this publication may be reproduced, by any me
8、ans whatsoever, without written permission of ITU. Rec. ITU-R F.2086-0 1 RECOMMENDATION ITU-R F.2086-0 Deployment scenarios for point-to-point systems in the fixed service (Question ITU-R 252/5) (2015) Scope This Recommendation contains information on deployment scenarios and related statistics for
9、some point-to-point fixed wireless systems in the fixed service operating in the frequency range 1.4-86 GHz. This information can be used in sharing and interference studies between these systems in the fixed service and systems in other services. This Recommendation is intended to be used in conjun
10、ction with Recommendation ITU-R F.758. Keywords Deployment, point-to-point, sharing, elevation angle, link length, antenna height The ITU Radiocommunication Assembly, considering a) that it is often necessary to study sharing between point-to-point (P-P) systems in the fixed service (FS) and systems
11、 in other services in frequency bands which are allocated to both services with equal rights; b) that interference from other systems in services operating in the same band on a non-primary basis, unwanted emissions from other systems in services operating outside the band allocated to the fixed ser
12、vice, and emissions from sources other than radio services need also to be taken into account; c) that the deployment scenarios of systems in each service needs to be understood in order to establish the sharing models to be studied; d) that availability of basic information on FS point-to-point dep
13、loyment is useful for sharing and interference studies involving FS and other services, noting a) that Recommendation ITU-R F.758 provides information on the development of sharing criteria and assessment of interference conditions between the FS and other services and other sources of interference;
14、 b) that Recommendation ITU-R F.758 also provides guidance to the technical characteristics and typical system parameters of digital fixed wireless systems that need to be taken into account when developing criteria for sharing and compatibility with other services and radio applications; c) that Re
15、commendations ITU-R F.699 and ITU-R F.1245 provide FS P-P antenna reference radiation patterns for peak side-lobe and average side-lobe, respectively, recommends that, when more specific information is not available, the information in Annex 1 should be used for FS point-to-point deployment scenario
16、s in conjunction with statistical data in Annex 2 which may be used when studying sharing or interference between point-to-point systems in the FS and other systems/applications in the FS and other services. 2 Rec. ITU-R F.2086-0 Annex 1 Deployment scenarios for point-to-point systems in the fixed s
17、ervice 1 Introduction As a default in the absence of more specific information, the parameters and assumptions in this Recommendation are recommended for use in technical studies on sharing or interference involving FS P-P systems in bands above approximately 1 GHz1. For simplicity, assumptions for
18、the frequency bands in this Recommendation are shown for broad frequency ranges in some cases. This is done for simplicity and does not imply any allocation issues. 2 Deployment scenarios for FS point-to-point systems The type of application for which an FS P-P system is used, and therefore the way
19、the system is deployed, will broadly vary by frequency range and geographical environment in each administration. Lower microwave bands roughly below 11 GHz allow for long hops, but provide channel widths up to 28/40 MHz possibly doubled through dual channel aggregation. These characteristics are pa
20、rticularly well-suited to long intercity routes (e.g. along highways, railways, electrical transmission corridors and other rights-of-way). Systems in these bands may be used as an alternative to fibre or redundancy, in rugged terrain where it is difficult to deploy fibre or a case where low latency
21、 is desired. Links in these bands are less commonly (or less densely) deployed in urban cores and overall numbers of links in these bands are lower than at higher frequencies. It should be noted that radio links in these bands are likely to be deployed in star configuration converging to an FS stati
22、on located in urban cores. Medium microwave bands roughly 11-23 GHz still allow for relatively long hops and provide wider channels compared to lower bands. These bands are often used for backhaul for mobile infrastructure within urban and suburban areas, often using ring or star configurations. Num
23、bers of links as well as deployment density in these bands can be very high. High microwave bands roughly above 23 GHz, but below 30 GHz, are suitable for short hops but can provide large bandwidths. These bands are most popular in urban areas as an alternative to fibre, to link campuses or to provi
24、de backhaul for cell sites, especially small cells. Generally, systems will only extend to one or two hops. Numbers of links as well as deployment density in these bands can be very high in dense urban areas and use of these bands is increasing rapidly. Millimetric wave bands at frequencies above 30
25、 GHz are suitable for short hops and are appealing for their high performance (very large bandwidths and high data rates). The propagation characteristics and antenna directivity are ideally suited for a high density architecture of short-range point-to-point links with a high level of frequency reu
26、se. Millimetric wave fixed service links are capable of providing fibre-like multi-gigabit 1 For the purposes of description, commonly used nomenclature refers to the frequency range of 300 MHz to 300 GHz as “microwaves”. In terms of frequency bands, according to RR No. 2.1, the frequency range of 3
27、0 GHz to 300 GHz is designated as “millimetric waves”. Rec. ITU-R F.2086-0 3 capacity. Some of the links could be deployed in an uncoordinated manner. Potential applications of millimetric wave fixed service links include transport for: wireless local area networks (WLANs), wireless personal area ne
28、tworks (WPANs), mobile broadband (i.e. backhaul), high resolution nomadic multimedia services, and wireless video distribution systems. It is expected use of these bands will increase as technologies develop and mature. These descriptions are broad generalizations and in practice there is considerab
29、le blurring and overlap between these general categories for frequency ranges and the corresponding applications. It should be noted that for millimetric wave fixed service applications, several bands are not discussed further in this Recommendation. These include, in particular, the fixed service b
30、ands of 92-94 GHz and above. Therefore references in this Recommendation that refer to “above 23 GHz” do not include these higher frequency millimetric wave bands for fixed service allocations. 3 FS point-to-point parameters for use in technical studies 3.1 Interference criteria Refer to Recommendat
31、ion ITU-R F.758 for general information and guidance regarding interference criteria for technical studies. 3.2 FS point-to-point equipment parameters The primary reference for assumptions regarding FS equipment parameters is Recommendation ITU-R F.758, Annex 2. If there is no information on the fre
32、quency range of interest, there is additional information in Recommendation ITU-R F.758, Annex 3. In cases where there is no relevant information in either of these Annexes, and in case it is desired to analyse analogue systems, there is an archive of additional, though potentially outdated, equipme
33、nt information in Report ITU-R F.2108. 3.3 Reference antenna patterns The appropriate choice of reference antenna pattern for analyses involving FS point-to-point systems will depend on the scenario being studied: for cases where there is a single (or limited number of) interference source and stati
34、c geometry, it is recommended to use a peak side-lobe pattern such as the one described in Recommendation ITU-R F.699; for statistical and time varying analyses as well as cases where there is an aggregation of interference from a large number of sources as well as for spatial statistical analyses,
35、the use of a peak side-lobe pattern would tend to overestimate the level of interference. In these cases, it is recommended instead to use an average side-lobe pattern such as the one described in Recommendation ITU-R F.1245. 3.4 Propagation models The appropriate P-series Recommendation(s) for anal
36、ysing interference should be utilized. 3.5 Deployment-related parameters In this Annex, the following deployment-related parameters are discussed as typical elements to be used for the sharing and interference studies involving P-P systems in the fixed service: 4 Rec. ITU-R F.2086-0 link lengths; an
37、tenna elevation angles; antenna heights above ground level. For these parameters, statistical data provided by some administrations are summarized in Annex 2. When conducting the sharing studies with P-P systems in the fixed service operating in a certain frequency band, the guidance in Tables A1-1
38、to A1-4 may be useful, which show relations between the statistical data of deployment-related parameters in Annex 2 and the corresponding frequency bands identified in Recommendation ITU-R F.758. For the frequency bands not included in any of the left column in the Tables, it is suggested to use th
39、e statistical data available in the close band. TABLE A1-1 Statistical data of deployment-related parameters corresponding to the frequency bands identified in Recommendation ITU-R F.758 for below 6 GHz band Frequency band segment identified in Rec. ITU-R F.758 (GHz) Statistical data of deployment-r
40、elated parameters for use for the frequency bands in the left column 1.350-1.530 Tables A2-1A, A2-1B and A2-1C in Annex 2 Band 1.375-1.400/1.427-1.452 GHz 1.700-2.100/1.900-2.300 Band 2.025-2.110/2.200-2.285 GHz 2.290-2.670 Band 2.025-2.110/2.200-2.285 GHz 3.600-4.200 Band 3.7-4.2 GHz 4.400-5.000 No
41、te NOTE The data is currently not available. TABLE A1-2 Statistical data of deployment-related parameters corresponding to the frequency bands identified in Recommendation ITU-R F.758 for 6-10 GHz band Frequency band segment identified in Rec. ITU-R F.758 (GHz) Statistical data of deployment-related
42、 parameters for use for the frequency bands in the left column 5.925-6.425 Tables A2-2A, A2-2B and A2-2C in Annex 2 Band 5.925-6.425 GHz Band 6 GHz 6.425-7.125 Band 6.425-7.125 GHz Band 7 GHz 7.110-7.900 Band 7 GHz Band 7.125-7.725 GHz Band 7.425-7.75 GHz 7.725-8.500 Band 7.725-8.275 GHz Band 8.025-
43、8.500 GHz Band 8 GHz 10.5-10.68 Band 10 GHz Rec. ITU-R F.2086-0 5 TABLE A1-3 Statistical data of deployment-related parameters corresponding to the frequency bands identified in Recommendation ITU-R F.758 for 11-23 GHz band Frequency band segment identified in Rec. ITU-R F.758 (GHz) Statistical data
44、 of deployment-related parameters for use for the frequency bands in the left column 10.7-11.7 Band 11 GHz Band 10.7-11.7 GHz 12.75-13.25 Tables A2-3A, A2-3B and A2-3C in Annex 2 Band 13 GHz 14.4-15.35 Band 14.25-14.5 GHz Band 15 GHz Band 14.4-15.23 GHz Band 14.5-15.35 GHz 17.7-19.7 Band 17.7-19.7 G
45、Hz Band 18 GHz Band 17.8-18.3/19.3-19.7 GHz Band 17.82-18.72 GHz 21.2-23.6 Band 23 GHz Band 22-23.6 GHz Band 22.4-22.6/23.0-23.2 GHz TABLE A1-4 Statistical data of deployment-related parameters corresponding to the frequency bands identified in Recommendation ITU-R F.758 for above 23 GHz band Freque
46、ncy band segment identified in Rec. ITU-R F.758 (GHz) Statistical data of deployment-related parameters for use for the frequency bands in the left column 24.25-29.50 Tables A2-4A, A2-4B and A2-4C in Annex 2 Band 26 GHz Band 25.053-25.431/ 26.061-26.439 GHz Band 28 GHz 31.8-33.4 Band 32 GHz 36.0-40.
47、5 Band 38 GHz 51.4-52.6 Note 55.78-59.0 Note 71-76/81-86 Band 75 GHz Band 71-76/81-86 GHz NOTE The data is currently not available. 3.5.1 Link lengths Link lengths of the fixed service could be determined, within the application for which an FS P-P system is used, taking into account the following f
48、actors (see also 2 of this Annex: Deployment scenarios for FS point-to-point systems): 6 Rec. ITU-R F.2086-0 required link performance (or availability) line-of-sight condition. In case of backhaul for mobile infrastructure, the distance between mobile base stations or between mobile base stations a
49、nd the high-level node (core network station) will become a basic factor. 3.5.2 Antenna pointing direction In certain frequency bands shared with space services above 1 GHz, the direction of maximum radiation of any FS antenna exceeding certain e.i.r.p. limit is separated from geostationary-satellite orbit by 1.5 to 2 degrees in accordance with the relevant provision in RR Article 21 where it is practicable. In sharing studies between the fixed service and the space services, it would become an important factor whether the above arc avoidance has been (or is con
