1、 Report ITU-R M.2176(07/2010)Vision and requirements for the satellite radio interface(s) of IMT-AdvancedM SeriesMobile, radiodetermination, amateurand related satellites servicesii Rep. ITU-R M.2176 Foreword The role of the Radiocommunication Sector is to ensure the rational, equitable, efficient a
2、nd 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 regulatory and policy functions of the Radiocommunication Sector are perfo
3、rmed 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 ITU-T/ITU-R/ISO/IEC referenced in Annex 1 of Resolution ITU-R 1. Forms t
4、o 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/ITU-R/ISO/IEC and the ITU-R patent information database can also be fo
5、und. Series of ITU-R Reports (Also available online at http:/www.itu.int/publ/R-REP/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, radiodeter
6、mination, 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 between fixed-satellite and fixed service systems SM Spectrum management Note: T
7、his ITU-R Report was approved in English by the Study Group under the procedure detailed in Resolution ITU-R 1. Electronic Publication Geneva, 2010 ITU 2010 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without written permission of ITU. Rep. ITU-R M.21
8、76 1 REPORT ITU-R M.2176 Vision and requirements for the satellite radio interface(s) of IMT-Advanced (2010) TABLE OF CONTENTS Page 1 Introduction 2 2 Scope 2 3 Structure of the Report . 3 4 Related ITU documents 3 5 List of definitions, acronyms and abbreviations . 3 5.1 Definitions 3 5.2 Acronyms
9、and abbreviations 3 6 Visions on the satellite component of IMT-Advanced . 5 6.1 Application scenarios 5 6.2 Services aspects 5 6.3 System aspects 7 6.4 Radio interface aspects . 8 6.5 Possible system architectures for the satellite component of IMT-Advanced . 9 7 Requirements for the satellite radi
10、o interface(s) of IMT-Advanced 10 7.1 Service requirements 10 7.2 Technical requirements . 12 8 Guidelines for evaluation of the satellite radio interface(s) of IMT-Advanced . 15 8.1 Evaluation criteria . 15 8.2 Evaluation methodology . 16 9 Reference 31 2 Rep. ITU-R M.2176 1 Introduction Internatio
11、nal Mobile Telecommunications-Advanced (IMT-Advanced) systems are mobile systems that include the new capabilities of IMT that go beyond those of IMT-2000. Such systems provide access to a wide range of telecommunication services, including advanced mobile services supported by mobile and fixed netw
12、orks, which are increasingly packet-based. IMT-Advanced systems support low to high mobility applications and a wide range of data rates in accordance with user and service demands in multiple user environments. IMT-Advanced also has capabilities for high-quality multimedia applications within a wid
13、e range of services and platforms providing a significant improvement in performance and quality of service. The key features of IMT-Advanced are: a high degree of commonality of functionality worldwide while retaining the flexibility to support a wide range of services and applications in a cost ef
14、ficient manner; compatibility of services within IMT and with fixed networks; capability of interworking with other radio access systems; high-quality mobile services; user equipment suitable for worldwide use; user-friendly applications, service and equipment; worldwide roaming capability; enhanced
15、 peak data rates (i.e. wideband) to support advanced services and applications. These features enable IMT-Advanced to address evolving user needs. The capabilities of IMT-Advanced systems are being continuously enhanced in line with user trends and technology developments. The satellite component of
16、 IMT-Advanced will be an integral part of future IMT infrastructure with the optimized service delivery. Regarding the development of terrestrial radio interface(s) of IMT-Advanced, ITU-R WP 5D has already developed the Reports ITU-R M.2133, ITU-R M.2134 and ITU-R M.1235 in order to define service a
17、nd technical minimum requirement and present evaluation guideline and criteria for the terrestrial radio interface(s) of IMT-Advanced. However, it is indicated that ITU-R WP 5D did not take into consideration characteristics of satellite systems on its development of the related Reports. Therefore,
18、the requirements and evaluation guidelines developed by WP 5D should be considered for the development of satellite radio interface(s) of IMT-Advanced and modified considering specific satellite characteristics, such as longer transmission time between satellite and earth terminal or earth station,
19、if necessary. 2 Scope The purpose of this Report is to build visions on the satellite component of IMT-Advanced in terms of application scenarios, service, system, radio interface and network aspects and the considered specific features, to address a high-level of the constraints placed on the satel
20、lite radio interface(s) of IMT-Advanced particularly with respect to service and technical requirements, and finally to provide evaluation criteria and methodology on the requirements in order to produce Recommendations for development of the satellite radio interface(s) of IMT-Advanced. Rep. ITU-R
21、M.2176 3 3 Structure of the Report Section 4 provides a list of the documents that are related to this Report. Section 5 provides a list of definitions, acronyms and abbreviations. Section 6 describes visions on the satellite component of IMT-Advanced. Section 7 defines requirements for the satellit
22、e radio interface(s) of IMT-Advanced. Section 8 provides guidelines for evaluation of candidate satellite radio interface(s) of IMT-Advanced. Section 9 provides a list of references. 4 Related ITU documents Resolution ITU-R 57 Recommendation ITU-R M.1645 Recommendation ITU-R M.1822 Report ITU-R M.21
23、33 Report ITU-R M.2134 Report ITU-R M.2135. 5 List of definitions, acronyms and abbreviations 5.1 Definitions None. 5.2 Acronyms and abbreviations 3GPP Third Generation Partnership Project ACM Adaptive Coding and Modulation ARQ Automatic Repeat request CDMA Code-Division Multiple Access CGC Compleme
24、ntary Ground Component DL Downlink e.i.r.p. Equivalent Isotropically Radiated Power FDD Frequency-Division Duplexing FDMA Frequency-Division Multiple Access FEC Forward Error Correction FH Frequency Hopping G/T Antenna Gain to noise Temperature ratio HARQ Hybrid Automatic Repeat request IDMA Interle
25、ave Division Multiple Access IEEE Institute of Electrical and Electronics Engineers IP Internet Protocol 4 Rep. ITU-R M.2176 IPv6 Internet Protocol version 6 IMAP Internet Message Access Protocol IMT International Mobile Telecommunications ITS Intelligent Transportation Systems LMS Land Mobile Satel
26、lite LTE Long-Term Evolution MAC Media Access Control MCW Multi-Codeword MIMO Multi-Input Multi-Output MS Mobile Station MUD Multi-User Detection NGN Next-Generation Network OFDM Orthogonal Frequency-Division Multiplexing OFDMA Orthogonal Frequency-Division Multiplexing Access PAPR Peak to Average P
27、ower Ratio PF Proportional Fairness PHY Physical PN Pseudo Noise QoS Quality of Service POP Post Office Protocol RF Radio Frequency RIT Radio Interface Technology RRM Radio Resource Management RNC Radio Network Controller RX Receiver SCW Single Codeword SDMA Space-Division Multiple Access SRIT Set o
28、f Radio Interface Technology STBC Space-Time Block Coding STC Space-Time Coding TDD Time-Division Duplexing TDMA Time-Division Multiple Access TX Transmitter UL Uplink UT User Terminal VoIP Voice over Internet Protocol Rep. ITU-R M.2176 5 6 Visions on the satellite component of IMT-Advanced IMT-Adva
29、nced systems are mobile service systems that include the new capabilities of IMT going beyond those of IMT-2000. Such systems provide access to a wide range of telecommunication services, including advanced mobile services supported by mobile and fixed networks, which are increasingly packet-based.
30、IMT-Advanced systems support low to high-mobility applications and a wide range of data in accordance with user and service demands in multiple user environments. IMT-Advanced also has capabilities for high quality multimedia applications in a wide range of services and platforms anywhere, providing
31、 a significant improvement in performance and quality of service. In order to provide the seamless service in a global coverage, the satellite component of IMT-Advanced systems would be considered because the terrestrial component only would not be possible to be deployed all over the world. The aim
32、 of this section is to define visions on satellite component of IMT-Advanced for an efficient IMT service delivery with respect to application scenarios, services, system, radio and network interface aspects, and to provide possible candidate system architectures. 6.1 Application scenarios The appli
33、cation scenarios include: two-way communications using multibeam with frequency reuse scheme; interactive digital multimedia broadcasting using multibeam. The two-way communications can be regarded as a coverage extension on service continuity of terrestrial part with vertical handover. One of the m
34、ajor advantages using satellite is its capability to provide a global coverage. It can offer services in certain regions outside terrestrial coverage. The areas not adequately covered by terrestrial part include physically isolated regions, gap of terrestrial network and areas where terrestrial coll
35、apses due to disaster. In the scenario of “two-way communications using multibeam with frequency reuse scheme”, handover technique between the satellite and terrestrial component of IMT-Advanced system would be the most important to consider. For the cost-effective vertical handover, future satellit
36、e radio interfaces of IMT-Advanced should be compatible and may have a high degree of commonality with an envisaged terrestrial interface. It would offer the possibility to reuse terrestrial part technology to minimize user terminal chipset and network equipment for low cost and fast development. In
37、 addition, the satellite radio interface considered for “two-way communications” scenario with some adaptation with satellite environment can provide interactive multimedia broadcasting services, as the envisaged terrestrial radio interfaces of IMT-Advanced is being developed in order to handle effi
38、ciently multimedia broadcasting and multicasting services as well as a bidirectional communication services in a cellular system. In the “interactive multimedia broadcasting” scenario, an integrated satellite and CGC infrastructure would be required. Indeed, the satellite component of IMT-Advanced h
39、as an advantage over terrestrial component for delivery of same contents to spread over a wide geographical area. 6.2 Services aspects The following high-level requirements are described in Recommendation ITU-R M.1822: Seamless connectivity Mobility management Interoperability Constant connections 6
40、 Rep. ITU-R M.2176 Applicability scalability Security Prioritization Location Broadcast/multicast Presence Usability including voice reconfiguration and user-friendly human-to-machine interface Support of a wide range of services. The following list provides a wide range of telecommunication service
41、 offerings that will increase as new applications are developed based on the advancement of technology. TABLE 1 IMT services and examples User experience class Service class Example services Conversational Basic conversational Voice telephony (including VoIP) Emergency calling Push-to-talk Rich conv
42、ersational Videoconference High-quality video telephony Remote collaboration e-education (e.g. video call to teacher) Consultation (e.g. video interaction with doctor) Mobile commerce Conversational low delay Interactive gaming Consultation Priority service Interactive Interactive high delay e-educa
43、tion (e.g. data search) Consultation (e.g. data search) Internet browsing Mobile commerce Location-based services ITS-enabled services Interactive low delay Emergency calling e-mail (IMAP server access) Remote collaboration (e.g. desktop sharing) Public alerting (e.g. with feedback) Messaging (insta
44、nt messaging) Mobile broadcasting/multicasting (mobile interactive personalized TV) Interactive gaming Rep. ITU-R M.2176 7 TABLE 1 (end) User experience class Service class Example services Streaming Streaming live Emergency calling Public alerting e-education (e.g. remote lecture) Consultation (e.g
45、. remote monitoring), Machine-to-machine (e.g. observation) Mobile broadcasting/multicasting Multimedia Streaming non-live Mobile broadcasting/multicasting e-education (e.g. education movies) Multimedia Mobile commerce Remote collaboration Background Background Messaging, Video messaging Public aler
46、ting e-mail (transfer RX/TX, e.g. POP) Machine-to-machine File transfer/download e-education (file download/upload) Consultation (file download/upload) Internet browsing Location-based service The development of mobile telecommunication networks and the need for higher data rates allow the developme
47、nt of new user services and concurrently create the possibility to stay connected everywhere in the best possible condition. The services required for the satellite component of IMT-Advanced would be similar to that provided by terrestrial component assuming the new applications and new user service
48、s may appear. To make provision for mobile broadcasting/multicasting services, specific satellite resources may be dedicated to them. The system network layer has to support these different types of services with different requirements. Moreover, the satellite system constraints will give impacts on
49、 the latency, jitter and average and peak throughput and corresponding QoS parameters. And support of VoIP at the same level of QoS as on the terrestrial component may give a constraint on the satellite component of IMT-Advanced. 6.3 System aspects As mentioned before, the integration between satellite and terrestrial components of IMT-Advanced would be required in order to effectively utilize the respective areas of strength of each network within their traditional roles and mandate. An integrated satellite and terrestrial network can
