1、Rep. ITU-R M.2023 1 REPORT ITU-R M.2023 SPECTRUM REQUIREMENTS FOR INTERNATIONAL MOBILE TELECOMUNLCATIONS-2000 (lMT-2000) (2000) CONTENTS 1 Summary . 2 Background . 3 Conclusions Annex 1 1 Introduction and scope 2 IMT-2000 terrestrial component . 3 Satellite component of IMT-2000 . Appendix 1 to Anne
2、x 1 - Discussion about selection of parameter values for terrestrial spectrum calculations Attachment 1 to Appendix 1 Appendix 2 to Annex 1 - Detailed terrestrial component spectrum calculations Appendix 3 to Annex 1 - The United States of Americas forecasting of IMT-2000 satellite users and traffic
3、 . Appendix 4 to Annex 1 - Satellite component spectrum calculations based on the United States of Americas forecasts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Appendix 5 to Annex 1 - Inmarsats forecasting of MSS and IMT-2000 satellite users and traffic Appendix 6 to Annex 1 - Satellite component spectrum calculations based on the I
5、nmarsat forecasts Attachment 1 to Appendix 6 Page 1 2 3 5 5 5 8 11 22 24 37 44 48 51 55 1 Summary IMT-2000 defines 3rd generation mobile systems which are scheduled to start service around the year 2000 subject to market considerations. They will provide access, by means of one or more radio links,
6、to a wide range of telecommunication services supported by the fixed telecommunication networks such as PSTN and ISDN, and to other services which are specific to mobile users. A range of mobile terminal types is encompassed, linking to terrestrial and/or satellite-based networks; these terminals ma
7、y be designed for mobile or fixed use. Key features of IMT-2000 are: - - - high quality; - - worldwide roaming capability; - This Report is useful for Administrations when considering IMT-2000 spectrum requirements. It should be used in preparation for WRC-2000, including development of draft text f
8、or the CPM Report. high degree of commonality of design worldwide; compatibility of services within IMT-2000 and with the fixed networks; small terminals for worldwide use; capability for multimedia applications, and a wide range of services and terminals. COPYRIGHT International Telecommunications
9、Union/ITU RadiocommunicationsLicensed by Information Handling Services2 Rep. ITU-R M.2023 2 Background 2.1 Administrations may consider the following factors that are relevant to IMT-2000 spectrum: a this Report is a member; that IMT-2000 systems are defined by a set of interdependent ITU Recommenda
10、tions and Reports of which b) that RR No. S5.388 indicates that “the bands 1 885-2 025 MHz and 2 110-2 200 MHz are intended for use, on a worldwide basis, by administrations wishing to implement International Mobile Telecommunications-2000 (IMT-2000). Such use does not preclude the use of these band
11、s by other services to which these bands are allocated. The band should be made available for IMT-2000 in accordance with Resolution 212 (Rev.WRC-97)“; c a worldwide basis, potentially for use by the satellite component of IMT-2000, under the provisions of RR No. S5.389A; d) of RR Nos. S5.389C, S5.3
12、89D and S5.389E and Resolution 212 (Rev.WRC-97); that the RR also allocate within these bands the portions 1 980-2 010 MHz and 2 170-2200 MHz to the MSS on that the RR also allocate 2 010-2 025 MHz and 2 160-2 170 MHz in Region 2 to the MSS under the provisions e that portions of the bands identifie
13、d for the implementation of IMT-2000 (1 885-2025 MHz and 2 110-2 200 MHz) are used by existing terrestrial fixed services under current allocations; f) market considerations; that the initial implementations of IMT-2000 are expected to commence around the year 2000 subject to g) that IMT-2000 system
14、s will provide different categories of services in various environments; h) that the bands identified in Q 2.1 b) are shared with other systems of the mobile, fixed and mobile-satellite services and the band 2 110-2 120 MHz is shared with the space research service, and that many of these systems ar
15、e in use now; j) that these bands are used differently in various countries, even within the same Region; k) that all forecasts show that there will be a growth in the number of mobile subscribers in the future; 1) that the traffic and service mix carried by IMT-2000 systems may vary from country to
16、 country, and also within countries; in some parts of the world additional spectrum may be required whilst in other parts of the world the frequency bands identified in Q 2.1 b), c), and d) could be adequate to meet IMT-2000 services present and future demands: m continue to grow; that the amount of
17、 traffic handled by mobile systems as well as the number and diversity of services will n that there is a need to support the operation of IMT-2000 terminals in different regulatory environments; 0) bandwidth requirements, different capability, and hence varying impact on the basic frequency usage p
18、ossibilities; Pl that the various radio access technologies that may be appropriate for IMT-2000 may have different channel that selection of a worldwide frequency band will facilitate the use of global roaming; s) a given location; r demands, and this could create a demand for additional spectrum b
19、eyond that earlier estimated; that future systems may include the use of a range of cell types from small indoor cells to large satellite cells in that IMT-2000 will offer higher data rate services than earlier systems in order to meet increasing customer s that the spectrum requirement calculation
20、will necessitate assumptions on typical IMT-2000 deployment scenarios; that efficiency of spectrum use requires consideration of the balances between IMT-2000 system costs and bandwidth needed. 2.2 Administrations may further consider, relative to the terrestrial component: a that in some countries,
21、 within the lower part of the 1 885-2 025 MHz IMT-2000 band, digital enhanced cordless telecommunication (DECT) operates at 1880-1 900 MHz, and personal handy phone system (PHS) at 1 893.5-1 919.6 MHz. Also, in some countries personal communication services (PCS) systems based on North American stan
22、dards employ 80 MHz duplex separation within the band 1850-1 990 MHz; COPYRIGHT International Telecommunications Union/ITU RadiocommunicationsLicensed by Information Handling ServicesRep. ITU-R M.2023 3 b) that administrations may choose to permit operators to use frequency bands currently allocated
23、 to pre-IMT- 2000 mobile service for IMT-2000 usage as a strategy for the evolution from 2nd generation wireless systems to 3rd generation wireless systems having IMT-2000 capabilities; cl that spectrum requirements for the terrestrial component of IMT-2000 were estimated in Report ITU-R M.1153 prio
24、r to WARC-92 at which time the primary wireless service emphasis was on voice services whereas IMT-2000 systems will provide a variety of wideband data and multimedia services in addition to voice services. Report ITU-R M.1153 is now documented in Recommendation ITU-R M.687: d) that the methodology
25、described in Recommendation ITU-R M.1390 - Methodology for the calculation of IMT-2000 terrestrial spectrum requirements has been used to calculate the spectrum requirement for the terrestrial component of IMT-2000. 2.3 Administrations may further consider, relative to the satellite component: a) th
26、at the need for additional spectrum for the MSS in the 1-3 GHz range has been stated in the CPM Reports to the last two WRCs. The CPM Report to WRC-95 indicated that a total allocation of between 2 x 75 MHz and 2 x 150 MHz would be required by 2005 (Part A.2, 3 to Chapter 2); b) that the CPM Report
27、to WRC-97 indicated that 2 x 250 MHz would be necessary by 2010; cl variations: that currently the RR allocate about 2 x 115 MHz to the MSS in the 1-3 GHz range, with some regional d) availability of those bands for the MSS, and in many countries they are not available for MSS at all; that most of t
28、hese bands are used by other services in most countries, substantially reducing the actual e) between 1-3 GHz (as of November 1998). Some of these systems have been filed in more than one band; that a large number of satellite systems have been advanced published by the ITU for the MSS frequency ban
29、ds f) that the bands 1525-1 559A626.5-1660.5 MHz and 1610-1 626.Y2483.5-2500 MHz are rapidly becoming congested due to an increasing number of operational and planned MSS systems with growing spectrum requirements, which has become apparent in the annual multilateral coordination meetings in all Reg
30、ions with respect to the first pair of bands: g) satellite networks published are brought into operation; that as other MSS bands in 1-3 GHz become available, these bands may also become congested when the h) that the satellite forecasts have been based on extensive primary and secondary research co
31、nducted globally. One major global mobile satellite companys forecast (Appendix 3 to Annex 1) is based on extensive market analysis, including primary market research which involved screening over 200 O00 persons and interviewing more than 23 300 individuals from 42 countries and 3 O00 corporations
32、with remote operations; j) that another major global mobile satellite companys forecast (Appendix 5 to Annex 1) is based on detailed user and potential user surveys in over 15 countries in the world covering over 1 O00 companies and individuals, building on forecast and user profile information obta
33、ined during almost 20 years of operation; k) that the methodology described in Recommendation ITU-R M.1391 - Methodology for the calculation of IMT-2000 satellite spectrum requirements, has been used to calculate the spectrum requirement for the satellite component of IMT-2000. Conclusions The concl
34、usions of this Report are: a) that the market forecast data and technical parameter values of Annex 1 and its Appendices should be used by administrations for IMT-2000 spectrum requirements; COPYRIGHT International Telecommunications Union/ITU RadiocommunicationsLicensed by Information Handling Serv
35、ices4 Rep. ITU-R M.2023 Region Region 1 b) that there is a forecasted need for 160 MHz of additional spectrum for terrestrial IMT-2000, beyond the terrestrial IMT-2000 spectrum already identified in RR No. S5.388 and beyond the spectrum used in the various Regions for 1st and 2nd generation mobile s
36、ystems. This forecast should be considered by administrations in addressing IMT-2000 spectrum requirements. A summary is provided in Table 1; Total forecasted terrestrial Identified total terrestrial mobile Forecasted additional IMT-2000 terrestrial component spectrum requirement for the year 2010 m
37、obile spectrum requirement for the year 2010 spectrum (including RR No. S5.388 IMT-2000 spectrum) (MHZ)( 1) (MHz) (MHz) 555 395 160 c) that the forecasted satellite spectrum requirement for the years 2005 and 2010, as provided in Table 2, should be considered by administrations in addressing IMT-200
38、0 spectrum requirements. Region 2 Region 3 TABLE i 390 230 160 480 320 160 Summary of global mobile terrestrial spectrum requirement including the IMT-2000 terrestrial component Year IMT-2000 (satellite component) Total MSS (including IMT-2000 satellite component) 2005 2010 2 x 67 2 x 145 2 x 31,5 2
39、 x 123 (I) The figures represent the requirement in those geographical areas where the traffic is the highest. The identified total terrestrial mobile spectrum consists of the spectrum already identified in RR No. S5.388 for terrestrial IMT-2000 and also the spectrum used for 1st and 2nd generation
40、mobile systems. The resultant additional IMT- 2000 terrestrial component spectrum required is also presented in Table 1. It is recognized that the existing identified terrestrial spectrum may vary between countries within a Region. Additional information is provided in Annex 1, Q 2.4. TABLE 2 Summar
41、y of global mobile satellite spectrum requirements, including IMT-2000 satellite component (MHz) NOTE 1 - The figures in Table 2 represent the requirement in those geographical areas where the traffic is the highest. The basis for these satellite requirements are the forecasts detailed in Annex 1, Q
42、 3. In the various regions, consideration must be given to the existing spectrum assigned for pre-IMT-2000 MSS services. Because the total MSS satellite calculation includes both pre-IMT-2000 and IMT-2000 services, a subtraction of the existing satellite spectrum allocated to the pre-IMT-2000 servic
43、es must be performed to determine the additional satellite spectrum required for the IMT-2000 satellite component in the years 2005 and 2010. This subtraction has not been done in this Report, due to the variation across administrations of the spectrum allocated to pre-IMT-2000 satellite services. C
44、OPYRIGHT International Telecommunications Union/ITU RadiocommunicationsLicensed by Information Handling ServicesRep. ITU-R M.2023 ANNEX 1 5 1 Introduction and scope Spectrum requirements for the terrestrial component of IMT-2000 were estimated prior to WARC-92 in the ex-CCIR Report to WARC-92. These
45、 spectrum calculations are now documented in Recommendation ITU-R M.687. Speech services were considered to be the major source of traffic at the time. As technological advancements carry us toward the 21st century, customers will demand more and more capabilities from wireless services. Future wire
46、less services must support not only speech but also a rich range of new services that will serve a wide range of applications. Bearer services supporting applications such as multimedia, Internet access, imaging and videoconferencing will be needed in 3rd generation wireless system. In response to t
47、hese new applications, IMT-2000 will support high rate data services. The provision of the new services described in Recommendation. ITU-R M.816 - Framework for services supported by International Mobile Telecommunications-2000 (IMT-2000) has an impact on the spectrum requirements of IMT-2000 system
48、s. Therefore it is necessary to revisit the original spectrum estimations in Report ITU-R M. 1153 and examine: - if the original spectrum estimates are still adequate; and - if not, how much additional spectrum is needed. 1.1 Scope This Report: a) refers to the methodologies used in calculating spec
49、trum requirements for both terrestrial and satellite mobile services; b) describes the forecast demand estimates for such services; c) provides the values used for the parameters in the spectrum calculation equations; d) provides the numerical results of the application of the spectrum calculation methodologies for terrestrial and satellite mobile services: and e) determines the amount of spectrum needed to support IMT-2000 services by both the terrestrial and satellite components of IMT-2000. It is recognized that the requirements expressed in this Report will be considered in preparatio
