1、 Recommendation ITU-R M.1850-2 (10/2014) Detailed specifications of the radio interfaces for the satellite component of International Mobile Telecommunications-2000 (IMT-2000) M Series Mobile, radiodetermination, amateur and related satellite services ii Rec. ITU-R M.1850-2 Foreword The role of the
2、Radiocommunication 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
3、 regulatory 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 f
4、or ITU-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 I
5、TU-T/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 servic
6、e (sound) 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 coordinati
7、on between 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. Ele
8、ctronic Publication Geneva, 2014 ITU 2014 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without written permission of ITU. Rec. ITU-R M.1850-2 1 RECOMMENDATION ITU-R M.1850-2 Detailed specifications of the radio interfaces for the satellite component of
9、 International Mobile Telecommunications-2000 (IMT-2000)* (2010-2012-2014) Scope This Recommendation identifies the IMT-2000 satellite radio interface specifications, originally based on the key characteristics identified in the output of activities outside ITU. These satellite radio interfaces supp
10、ort the features and design parameters of IMT-2000, including the capability to ensure worldwide compatibility, international roaming, and access to high-speed data services. CONTENTS Page 1 Introduction 2 2 Related Recommendations . 2 3 Considerations 4 3.1 Radio interfaces for the satellite compon
11、ent of IMT-2000. 4 3.2 Incorporation of externally developed specification material 4 3.3 Satellite component interfaces 5 4 Recommendations (satellite component) 7 4.1 Core network interface . 7 4.2 Satellite/terrestrial terminal interface . 8 4.3 Satellite radio interface specifications 8 5 Recomm
12、endations on unwanted emission limits from the terminals of IMT-2000 satellite systems 159 Annex 1 Abbreviations . 159 * The recommended detailed specifications of the radio interfaces of IMT-2000 are contained in the core global specifications which form part of this Recommendation by means of refe
13、rences to uniform resource locators (URLs) at the ITU Website. For those cases where recognized external organizations have converted these core global specifications or parts thereof into their own approved standards, a reference to the corresponding external text is included in this Recommendation
14、 by means of URLs at their Websites. Such references do not give the external texts the status, as stand-alone texts, of ITU Recommendations. Any reference to an external text is accurate at the time of approval of this Recommendation. Since the external text may be revised, users of this Recommenda
15、tion are advised to contact the source of the external text to determine whether the reference is still current. This Recommendation will be subject to periodic updates that will be coordinated with the appropriate recognized external organizations responsible for the Pageexternal texts that are ref
16、erenced. 2 Rec. ITU-R M.1850-2 1 Introduction1 IMT-2000s are third generation mobile systems which provide access, by means of one or more radio links, to a wide range of telecommunications services supported by the fixed telecommunication networks (e.g. PSTN/ISDN/Internet protocol (IP), and to othe
17、r services which are specific to mobile users. A range of mobile terminal types is encompassed, linking to terrestrial and/or satellite-based networks, and the terminals may be designed for mobile or fixed use. Key features of IMT-2000 are: high degree of commonality of design worldwide; compatibili
18、ty of services within IMT-2000 and with the fixed networks; high quality; small terminal for worldwide use; worldwide roaming capability; capability for multimedia applications, and a wide range of services and terminals. IMT-2000 are defined by a set of interdependent Recommendations of which this
19、one is part of. Recommendation ITU-R M.1457 forms part of the process of specifying the terrestrial radio interfaces of IMT-2000, as defined in Recommendation ITU-R M.1225. It identifies the detailed specifications for the IMT-2000 terrestrial radio interfaces. This Recommendation forms the final pa
20、rt of the process of specifying the radio interfaces of IMT-2000, as defined in Recommendation ITU-R M.1225. It identifies the detailed specifications for the IMT-2000 satellite radio interfaces. Updates and enhancements to the satellite radio interfaces incorporated in this Recommendation have unde
21、rgone a defined process of development and review to ensure consistency with the original goals and objectives established for IMT-2000 while acknowledging the obligation to accommodate the changing requirements of the global marketplace. By updating the existing technologies, harmonizing existing i
22、nterfaces, and entertaining new mechanisms, IMT-2000 remains at the forefront of mobile radio technology. 2 Related Recommendations The existing IMT-2000 Recommendations that are considered to be of importance in the development of this particular Recommendation are as follows: Recommendation ITU-R
23、M.687: International Mobile Telecommunications-2000 (IMT-2000) Recommendation ITU-R M.816: Framework for services supported on International Mobile Telecommunications-2000 (IMT-2000) Recommendation ITU-R M.817: International Mobile Telecommunications-2000 (IMT-2000). Network architectures Recommenda
24、tion ITU-R M.818: Satellite operation within International Mobile Telecommunications-2000 (IMT-2000) Recommendation ITU-R M.819: International Mobile Telecommunications-2000 (IMT-2000) for developing countries 1 Abbreviations used in this Recommendation are listed in Annex 1. Rec. ITU-R M.1850-2 3 R
25、ecommendation ITU-R M.1034: Requirements for the radio interface(s) for International Mobile Telecommunications-2000 (IMT-2000) Recommendation ITU-R M.1035: Framework for the radio interface(s) and radio sub-system functionality for International Mobile Telecommunications-2000 (IMT-2000) Recommendat
26、ion ITU-R M.1036: Frequency arrangements for implementation of the terrestrial component of International Mobile Telecommunications (IMT) in the bands identified for IMT in the Radio Regulations (RR) Recommendation ITU-R M.1167: Framework for the satellite component of International Mobile Telecommu
27、nications-2000 (IMT-2000) Recommendation ITU-R M.1224: Vocabulary of terms for International Mobile Telecommunications (IMT) Recommendation ITU-R M.1225: Guidelines for evaluation of radio transmission technologies for IMT-2000 Recommendation ITU-R M.1308: Evolution of land mobile systems towards IM
28、T-2000 Recommendation ITU-R M.1311: Framework for modularity and radio commonality within IMT-2000 Recommendation ITU-R M.1343: Essential technical requirements of mobile earth stations for global non-geostationary mobile-satellite service systems in the bands 1-3 GHz Recommendation ITU-R M.1457: De
29、tailed specifications of the radio interfaces of International Mobile Telecommunications-2000 (IMT-2000) Recommendation ITU-R M.1480: Essential technical requirements of mobile earth stations of geostationary mobile-satellite systems that are implementing the Global mobile personal communications by
30、 satellite (GMPCS) Memorandum of understanding arrangements in parts of the frequency band 1-3 GHz Recommendation ITU-R SM.329: Unwanted emissions in the spurious domain Recommendation ITU-T Q.1701: Framework of IMT-2000 networks Recommendation ITU-T Q.1711: Network functional model for IMT-2000 Rec
31、ommendation ITU-T Q.1721: Information flows for IMT-2000 capability set 1 Recommendation ITU-T Q.1731: Radio-technology independent requirements for IMT-2000 layer 2 radio interface Handbook on Land Mobile (including Wireless Access), Volume 2 Principles and Approaches on Evolution to IMT-2000/FPLMT
32、S. 3 Considerations 3.1 Radio interfaces for the satellite component of IMT-2000 IMT-2000 consists of both terrestrial component and satellite component radio interfaces. All of the satellite radio interfaces for IMT-2000 are encompassed and defined by information supplied with this Recommendation.
33、Due to the constraints on satellite system design and deployment, several satellite radio interfaces will be required for IMT-2000 (see Recommendation ITU-R M.1167 for further considerations). 4 Rec. ITU-R M.1850-2 Because a satellite system is resource limited (e.g. power and spectrum limited), its
34、 radio interfaces are therefore specified primarily based on a whole system optimization process, driven by the market needs and business objectives. It is generally not technically feasible or viable from a business point-of-view to have a radio interface common to satellite and terrestrial IMT-200
35、0 components. Nevertheless, it is desirable to achieve as much commonality as possible with the terrestrial component when designing and developing an IMT-2000 satellite system. The strong dependency between technical design and business objectives of an IMT-2000 satellite system requires a large sc
36、ope of flexibility in the satellite radio interface specifications. Future modifications and updates of these specifications may nevertheless be needed in order to adapt to changes in market demands, business objectives, technology developments, and operational needs, as well as to maximize the comm
37、onality with terrestrial IMT-2000 systems as appropriate. The radio interfaces for the terrestrial components are described in detail in 5 of Recommendation ITU-R M.1457. The radio interfaces for the satellite components are described in detail in 4 of this Recommendation. 3.2 Incorporation of exter
38、nally developed specification material IMT-2000 is a system with global development activity and the IMT-2000 radio interface specifications identified in this Recommendation have been developed by the ITU in collaboration with the radio interface technology proponent organizations, global partnersh
39、ip projects and regional standards development organizations (SDOs). The ITU has provided the global and overall framework and requirements, and has developed the core global specifications jointly with these organizations. The detailed standardization has been undertaken within the recognized exter
40、nal organization (see Note 1), which operate in concert with the radio interface technology proponent organizations and global partnership projects. This Recommendation therefore makes extensive use of references to externally developed specifications. NOTE 1 A “recognized organization” in this cont
41、ext is defined to be a recognized SDO that has legal capacity, a permanent secretariat, a designated representative, and open, fair, and well-documented working methods. This approach was considered to be the most appropriate solution to enable completion of this Recommendation within the aggressive
42、 schedules set by the ITU and by the needs of administrations, operators and manufacturers. This Recommendation has therefore been constructed to take full advantage of this method of work and to allow the global standardization time-scales to be maintained. The main body of this Recommendation has
43、been developed by the ITU, with references within each radio interface pointing to the location of the more detailed information. The sub-sections containing this detailed information have been developed by the ITU and the recognized external organizations. Such use of referencing has enabled timely
44、 completion of the high-level elements of this Recommendation, with change control procedures, transposition (conversion of the core specifications into SDO deliverables) and public enquiry procedures being undertaken within the recognized external organization. The structure of the detailed specifi
45、cations received from the recognized external organization has generally been adopted unchanged, recognizing the need to minimize duplication of work, and the need to facilitate and support an on-going maintenance and update process. This general agreement, that the detailed specifications of the ra
46、dio interface should to a large extent be achieved by reference to the work of recognized external organizations, highlights not only the ITUs significant role as a catalyst in stimulating, coordinating and facilitating the development of advanced telecommunications technologies, but also its forwar
47、d-looking and flexible approach to the development of this and other telecommunications standards for the 21st century. Rec. ITU-R M.1850-2 5 3.3 Satellite component interfaces The terrestrial and satellite components are complementary, with the terrestrial component providing coverage over areas of
48、 land mass with population density considered to be large enough for economic provision of terrestrially-based systems, and the satellite component providing service elsewhere by a virtually global coverage. The ubiquitous coverage of IMT-2000 can only therefore be realized using a combination of sa
49、tellite and terrestrial radio interfaces. To fulfill the scope, this Recommendation describes those elements needed for worldwide compatibility of operation noting that international use is inherently ensured through the global coverage of a satellite system. This description includes consideration of all the satellite component interfaces. Figure 1, which has been developed from Fig. 1 of Recommendation ITU-R M.818, shows the various interfaces in the IMT-2000 satellite component. FIGURE 1 Interfaces in the satellite component of IMT-2000 M . 18 50 - 01S a
