1、 Rep. ITU-R M.2079 1 REPORT ITU-R M.2079 Technical and operational information for identifying Spectrum for the terrestrial component of future development of IMT-2000 and IMT-Advanced*(2006) 1 Introduction To meet the ever increasing demands for mobile wireless communication and the expected higher
2、 data rates, as one of the initial steps, Recommendation ITU-R M.1645 defines the framework and overall objectives of the future development of IMT-2000 and IMT-Advanced. This framework is based on the global user and technology trends, including the needs of developing countries. Further ITU-R Reco
3、mmendations will develop these concepts in more detail. Based on Resolution 228 (Rev.WRC-03), WRC-03 established Agenda item 1.4 for the World Radiocommunication Conference 2007 (WRC-07) to consider frequency-related matters for the future development of IMT-2000 and IMT-Advanced. Resolution 228 (Re
4、v.WRC-03) invites ITU-R to report, in time for WRC-07, on the results of studies on the spectrum requirements and potential frequency ranges suitable for the future development of IMT-2000 and IMT-Advanced. Based on the above situation, ITU-R has studied frequency-related matters for the future deve
5、lopment of IMT-2000 and IMT-Advanced as follows: a) Report ITU-R M.2072 User demand predictions in future systems such as the amount of traffic in the year 2010 onwards were considered as input for the calculation of required spectrum bandwidth for the future development of IMT-2000 and IMT-Advanced
6、. Report ITU-R M.2072 addresses service and user demand issues of IMT-Advanced. b) Report ITU-R M.2074 Studies in radio aspects are also indispensable for the calculation of required spectrum bandwidth and the determination of suitable frequency ranges, taking into account technical trends and predi
7、ctions of the technical capabilities and characteristics in the year 2010 onwards. Report ITU-R M.2074 provides radio-related technical information which is relevant to the preparations of WRC-07 Agenda item 1.4. It describes technical matters related to radio aspects such as requirement for technic
8、al characteristics that are needed for the spectrum requirements calculations, values of the required radio parameters, spectrum efficiency values, and suitable spectrum range preference from a technical aspect. These matters are reflected in the process to calculate the required spectrum and to det
9、ermine *For ease of use, this report uses the terminology proposed in draft Resolution ITU-R IMT.NAME, which will be considered for adoption at the Radiocommunication Assembly 2007. It resolves: that the term “IMT-2000” encompasses also its enhancements and future developments; that the term “IMT-Ad
10、vanced” be applied to those systems, system components, and related aspects that include new radio interface(s) that support the new capabilities of systems beyond IMT-2000; and that the term “IMT” be the root name that encompasses both IMT-2000 and IMT-Advanced collectively. 2 Rep. ITU-R M.2079 sui
11、table frequency ranges for the future development of IMT-2000 and systems beyond IMT-2000 from the year 2010 onwards to fulfil the framework shown in Recommendation ITU-R M.1645. c) Report ITU-R M.2078 ITU-R Report M.2078 addresses spectrum requirements for the future development of IMT-2000 and IMT
12、-Advanced. The spectrum requirements were calculated with the spectrum calculation methodology defined in Recommendation ITU-R M.1768. In the spectrum calculation for the future development of IMT-2000 and IMT-Advanced new concepts are introduced including a mix of services, multiple complementary s
13、ystems and radio access technique groups. 2 Scope This Report provides useful information for administrations to consider when processing spectrum selection for the future development of IMT-2000 and IMT-Advanced in preparation for WRC-07. The selection process for candidate bands must consider comp
14、atibility, coordination and sharing with other primary services. To aid this process, the ITU-R evaluated suitable frequency ranges to fulfil the vision for the future development of IMT-2000 and IMT-Advanced. The information contained in this Report is as follows: a) A listing of related ITU-R Reco
15、mmendations and Reports. b) Background analysis on bands identified for IMT-2000 and the needs of developing and developed countries in relation to identifying possible world-wide spectrum for the future development of IMT-2000 and IMT-Advanced. c) A summary of related technical and user demand pred
16、ictions that influence spectrum requirements and the range of radio frequencies suitable for the future development of IMT-2000 and IMT-Advanced as further detailed in Reports ITU-R M.2072 and ITU-R M.2074. d) A summary of estimated spectrum requirements for the future development of IMT-2000 and IM
17、T-Advanced as outlined in Report ITU-R M.2078. e) A summary of the investigation on current bands usage and sharing studies results. f) The advantages and disadvantages of the candidate bands for possible candidate bands for the future development of IMT-2000 and IMT-Advanced. g) Appendix 1 Informat
18、ion document reflecting the views of Administrations related to candidate frequency ranges. 3 Related ITU-R Recommendations and Reports Recommendations: ITU-R M.687 International Mobile Telecommunications-2000 (IMT-2000) ITU-R M.819 International Mobile Telecommunications-2000 (IMT-2000) for develop
19、ing countries ITU-R M.1457 Detailed specification of the radio interfaces of International Mobile Telecommunications-2000 (IMT-2000) ITU-R M.1645 Framework and overall objectives of the future development of IMT-2000 and systems beyond IMT-2000 Rep. ITU-R M.2079 3 ITU-R M.1768 Methodology for calcul
20、ation of spectrum requirements for the future development of the terrestrial component of IMT-2000 and systems beyond IMT-2000 Reports: ITU-R M.2023 Spectrum requirements for International Mobile Telecommunication-2000 (IMT-2000) ITU-R M.2024 Summary of spectrum usage survey results ITU-R M.2039 Cha
21、racteristics of terrestrial IMT-2000 systems for frequency sharing/ interference analyses ITU-R M.2072 World mobile telecommunication market forecast ITU-R M.2074 Radio aspects for the terrestrial component of IMT-2000 and systems beyond IMT-2000 ITU-R M.2078 Spectrum requirements for the future dev
22、elopment of IMT-2000 and IMT-Advanced 4 Background 4.1 IMT-2000 and IMT-Advanced IMT-2000 systems are third generation mobile systems, which provide access to a wide range of telecommunication services, supported by the fixed telecommunication networks (e.g. PSTN/ISDN/IP), and to other services whic
23、h are specific to mobile users. Key features of IMT-2000 are: high degree of commonality of design worldwide; compatibility of services within IMT-2000 and with the fixed networks; high quality; small terminal suitable for worldwide use; worldwide roaming capability; capability for multimedia applic
24、ations within a wide range of services and terminals. The capabilities of IMT-2000 systems are being continuously enhanced in line with user demand and expectations and technology trends. The specifications for IMT-2000, are defined in Recommendation ITU-R M.1457. Recommendation ITU-R M.1645 defines
25、 the framework and overall objectives of the future development of IMT-2000 and systems beyond IMT-2000. That framework is based on the global user and technology trends, including the needs of developing countries. Further ITU-R Recommendations will develop these concepts in more detail. The ITU fi
26、rst identified spectrum for IMT-2000 at WARC-92, in No. 5.388 of the Radio Regulations (RR). WRC-2000 considered issues related to IMT-2000, resulting in the identification of additional spectrum for the terrestrial component of IMT-2000 in No. 5.317A and No. 5.384A. The spectrum identification for
27、IMT-2000 at WRC-2000 was based on the total forecasted need for spectrum by the year 2010. Based on the above, the ITU identified 749 MHz of spectrum for use by IMT-2000 to include: 806-960 MHz (No. 5.317A, Resolution 224), 1 710-1 885 MHz and 2 500-2 690 MHz (No. 5.384A, Resolution 223), 1 885-2 02
28、5 MHz and 2 110-2 200 MHz (No. 5.388, Resolution 212). The pre-IMT-2000 and IMT-2000 systems in the above bands 4 Rep. ITU-R M.2079 continue to exist and have been evolving over time. However, the spectrum already identified for IMT-2000 may not be sufficient to meet the increasing demand for wirele
29、ss communication, the expected higher data rates and the needs of developing countries. WRC-03 approved Resolution 228 (Rev. WRC-03) and set an agenda item for WRC-07 to consider frequency-related matters for the future development of IMT-2000 and systems beyond IMT-2000 and invited ITU-R to report,
30、 in time for WRC-07, on the results of studies on the spectrum requirements and potential frequency ranges suitable for the future development of IMT-2000 and IMT-Advanced. 4.2 Needs of developing countries It is widely acknowledged that the level of economic and social development as well as spectr
31、um availability across administrations and regions varies. For the convenience of analysis, countries can be simply divided into two categories, developed countries and developing countries. Information and communications technologies (ICT), such as IMT-2000 and IMT-Advanced have the ability to impr
32、ove lifestyles, social interactions and productivity. The international trend is to use telecommunications as a means to reduce social and economic differences by enabling entire populations, despite their location and resources, to have full coverage and access to telecommunication services. ICT ar
33、e also being used to optimize and increase the efficient use of scarce resources, such as spectrum. Advanced wireless technologies can offer developing countries new opportunities and services which take into account the fast growth of teledensity, the need to balance geographic and social distribut
34、ion of services, increased coverage, and improved use of suitable spectrum. In the era of globalization, the telecommunications needs of developing countries or underserved areas are similar to the needs of developed countries. However, developing and developed countries have different consideration
35、s and requirements which are often due to economic and social factors. For example, developing countries have low levels of income per inhabitant, large population densities, vast rural areas and areas of difficult geographical terrain. Thus needs of developing countries include affordable pricing o
36、f mobile services and technical solutions that enable coverage of rural areas with varied terrain characteristics. Therefore developing and developed countries may require different frequency ranges and the different amounts of spectrum over various time frames, which should be taken into account wh
37、en examining potential candidate bands. 4.3 Factors to consider in analyzing potential candidate bands The following factors are relevant to choosing potential spectrum for the future development of IMT-2000 and IMT-Advanced: a) the future development of IMT-2000 and IMT-Advanced are defined by a se
38、t of interdependent ITU-R Recommendations and Reports of which this Report is a part; b) bands currently identified for IMT-2000 may be used by existing and future systems under current allocations, including 806-960 MHz (No. 5.317A, Resolution 224), 1 710-1 885 MHz and 2 500-2 690 MHz (No. 5.384A,
39、Resolution 223), 1 885-2 025 MHz and 2 110-2 200 MHz (No. 5.388, Resolution 212); c) WRC-07 will consider spectrum related issues for the future development of IMT-2000 and IMT-Advanced; d) The time-frame in which the spectrum will be needed in the most countries; e) evaluation of suitable frequency
40、 ranges including the advantages/disadvantages and the results of sharing studies; Rep. ITU-R M.2079 5 f) consideration of spectrum and technical solutions that enable coverage of rural areas with varied terrain characteristics such as bands below those already identified for IMT-2000 in No. 5.317A
41、and through the satellite component of IMT-2000. 5 General considerations To investigate possible candidate bands for the future development of IMT-2000 and IMT-Advanced in order to satisfy WRC-07 agenda item 1.4 and Resolution 228 (Rev. WRC-03) the following technical factors should be considered:
42、The steady and continuous evolution of IMT-2000, which is expected to support new applications, products and services with data rates up to approximately 30 Mbit/s under optimum signal and traffic conditions. Possible use of the frequencies below those already identified for IMT-2000. For IMT-Advanc
43、ed there may be a requirement for a new radio interface(s) for the terrestrial component around the year 2010. ITU-R is considering new technologies, including the “new mobile access” and “new nomadic/local area wireless access” technologies: new mobile access to handle low to high mobility applicat
44、ions with a wide range of supported target peak data rates of up to approximately 100 Mbit/s; new nomadic/local area wireless access to handle low mobility applications with a wide range of supported peak data rates up to 1 Gbit/s. Moreover, as mentioned in Recommendation ITU-R M.1645, various other
45、 complementary access technologies (e.g. WPAN, WLAN, Digital Broadcast, and FWA) could be used in conjunction with the future development of IMT-2000 and IMT-Advanced and should be considered when examining potential candidate bands since they may impact the spectrum and service usage. 5.1 General u
46、ser demand trends The services and user demands of the future development of IMT-2000 and IMT-Advanced are fully detailed in the Report ITU-R M.2072. In particular, 5 of the Report discusses some of the many issues and types of services that can be considered when forecasting the user demand as far
47、as 2020. Included is the need to define services based on parameters, such as segmentation (e.g. consumer or business, adult or youth). The Report also discusses the transmission speeds expected for future mobile communications systems based on the projected growth of data access speeds in mobile an
48、d fixed communication systems. As both high performance mobile terminals and rich content become available, transmission speeds tantamount to those of fixed systems are required. This is becoming a reality with IMT-2000 systems, which offer transmission speeds of several hundred kbit/s to Mbit/s. En
49、hanced technical capabilities, a wider range of available services and breadth of applications will be progressively introduced as systems evolve to IMT-Advanced. The need to provide these new capabilities at high data rates with high mobility will need to be considered when choosing potential candidate bands. 5.2 Technical issues influencing spectrum range preferences Report ITU-R M.2074 includes detailed analysis of some of the technical issues surrounding the spectrum range preferences for the future development of IMT-2000 and IMT-Advanced. Section 5.4 of
