1、 I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T Series Q TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Supplement 66 (07/2014) SERIES Q: SWITCHING AND SIGNALLING Supplement on scenarios and requirements in terms of services and deployments for IMT and IMS in developing
2、 countries ITU-T Q-series Recommendations Supplement 66 ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALLING SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE Q.1Q.3 INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING Q.4Q.59 FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN Q.60Q.99 CLAUSES A
3、PPLICABLE TO ITU-T STANDARD SYSTEMS Q.100Q.119 SPECIFICATIONS OF SIGNALLING SYSTEMS No. 4, 5, 6, R1 AND R2 Q.120Q.499 DIGITAL EXCHANGES Q.500Q.599 INTERWORKING OF SIGNALLING SYSTEMS Q.600Q.699 SPECIFICATIONS OF SIGNALLING SYSTEM No. 7 Q.700Q.799 Q3 INTERFACE Q.800Q.849 DIGITAL SUBSCRIBER SIGNALLING
4、SYSTEM No. 1 Q.850Q.999 PUBLIC LAND MOBILE NETWORK Q.1000Q.1099 INTERWORKING WITH SATELLITE MOBILE SYSTEMS Q.1100Q.1199 INTELLIGENT NETWORK Q.1200Q.1699 SIGNALLING REQUIREMENTS AND PROTOCOLS FOR IMT-2000 Q.1700Q.1799 SPECIFICATIONS OF SIGNALLING RELATED TO BEARER INDEPENDENT CALL CONTROL (BICC) Q.19
5、00Q.1999 BROADBAND ISDN Q.2000Q.2999 SIGNALLING REQUIREMENTS AND PROTOCOLS FOR THE NGN Q.3000Q.3999 For further details, please refer to the list of ITU-T Recommendations. Q series Supplement 66 (07/2014) i Supplement 66 to ITU-T Q-series Recommendations Supplement on scenarios and requirements in t
6、erms of services and deployments for IMT and IMS in developing countries Summary International mobile telecommunications (IMT) and IP multimedia subsystem (IMS) are some of the technologies that have been developed to adequately respond to the demand for versatile telecommunication service offerings
7、. The current demands include; high bit rates, high quality of service (QoS) and quality of experience (QoE), mobility, international (roaming) capability for multimedia services, compatibility (backward and forward), affordability, easy to use end user terminals and security, among others. Fundamen
8、tally, these networks are ubiquitous in nature and are based on Internet protocol (IP). Developed countries have quickly implemented IMT in almost all their networks and the majority has also implemented IMS. Developing countries are much slower in implementing IMT and IMS. In this Supplement, infor
9、mation on the slow of IMT and IMS in developing countries is highlighted and some suggestions are made to overcome the challenges. Supplement 66 to ITU-T Q-series Recommendations is limited to providing advisory information, especially to developing countries, on the requirements for migration to IM
10、T and IMS, challenges to migration and some scenarios of migration to IMT and IMS drawn from feedback from developing countries. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T Q Suppl. 66 2014-07-18 13 11.1002/1000/12211 _ * To access the Recommendation, type the URL http:/
11、handle.itu.int/ in the address field of your web browser, followed by the Recommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii Q series Supplement 66 (07/2014) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the f
12、ield of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standard
13、izing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is cover
14、ed by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this publication, the expression “Administration“ is used for conciseness to indicate
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19、he latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2015 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Q series Supplement 66 (07/201
20、4) iii Table of Contents Page 1 Scope . 1 2 References . 2 3 Definitions 2 3.1 Terms defined elsewhere 2 4 Abbreviations and acronyms 3 5 Conventions 5 6 Overview of IMT and IMS . 5 6.1 IMT . 5 6.2 IMS . 6 6.3 Expected benefits from IMT and IMS for developing countries 7 7 Implementation of IMT and
21、IMS in mobile networks of developing countries . 10 7.1 Introduction 10 7.2 Technical considerations for IMT implementation 11 7.3 Other considerations for IMT implementation in developing countries 11 7.4 Technical considerations for implementing IMS . 11 7.5 Other implementation considerations for
22、 IMS in developing countries 12 8 General recommendations on implementing IMT and IMS . 12 Appendix I Analysis of information from countries . 13 I.1 Background to the analysis . 13 I.2 Analysis of the responses to the ITU Questionnaire by regulators 15 I.3 Analysis of the responses to the ITU Quest
23、ionnaire by operators . 17 I.4 Analysis of contributions received to date . 19 I.5 Information about deployed mobile networks in the 53 African countries 21 I.6 IMT and IMS implementation scenarios presented to date 22 Bibliography. 24 Q series Supplement 66 (07/2014) 1 Supplement 66 to ITU-T Q-seri
24、es Recommendations Supplement on scenarios and requirements in terms of services and deployments for IMT and IMS in developing countries 1 Scope There is a worldwide explosion in demand for increased bandwidth, mobility, multiple new applications, games, better quality of service and instant access
25、to information. These demands are being driven by higher incomes and increased levels of computer literacy. While the explosion is most significant in developed countries, recent statistics show a growing demand among developing countries. The most recent access technologies providing increased band
26、width for mobile networks related to international mobile telecommunications (IMT) are long term evolution (LTE) access technologies. In order to enable session based services such as voice over LTE (VoLTE) with a high level of quality, the IP multimedia subsystem (IMS) has gained significant releva
27、ncy in mobile telecommunication networks. Many operators in developed countries have implemented these technologies. In developing countries these technologies have already been implemented by some mobile networks while others are in the process of implementing them; however the majority have yet to
28、 commence implementation. Some countries are still deploying legacy networks with architecture based on the seven layers of open system interconnection (OSI), while others have deployed state of the art networks based on next generation networks (NGN) with a simplified architecture of only two layer
29、s, the service layer and the transport layer. Reasons for slow implementation mostly relate to financing (initial capital investment) and economics (doubt as the whether the market will take up the services and recoup the investment). There is also reluctance due to insufficient understanding of the
30、 benefits of IMT and IMS. Despite these drawbacks, it is the desire of many developing countries to evolve their networks and migrate their users enabling them to take advantage of the many services being provided by modern networks. Thus IMT and IMS systems are important to developing countries. Th
31、is Supplement has been provided in direct response to a request by developing countries for an examination of the issues relating to migration to IMT and IMS, to offer those countries guidance on migration and to present the best practices for the implementation of IMT and IMS in mobile networks. A
32、survey carried out in some developing countries concerning the status of IMT and IMS indicated that 76% of respondents were willing to migrate to IMT while 81% are planning to migrate to IMS. Over 64% of countries surveyed from Africa have implemented mobile networks capable of IMT and the rest are
33、planning to implement IMT and IMS capable networks within two to five years. . The survey found fourteen countries in Africa which had implemented IMS in their mobile networks. Those countries were South Africa, Uganda, Morocco, Algeria, Namibia, Liberia, Angola, Cameroon, Ghana, Botswana, Cte dIvoi
34、re, Gambia, Nigeria and Rwanda. However a number of countries in Africa were in advanced stages of negotiation with vendors while others were in the testing stage. The 2014 statistics on IMS in developing countries especially in Africa are incomplete, however, going purely by availability of IP netw
35、orks as a basic requirement for IMS, 64% of countries in Africa are capable of implementing IMS and it is therefore just a question of making the decision to implement. 2 Q series Supplement 66 (07/2014) This Supplement aims at providing information and scenarios that are expected to be useful to th
36、ose developing countries which are yet to migrate to or implement IMT and IMS in their mobile networks. 2 References ITU-T I.112 Recommendation ITU-T I.112 (1993), Vocabulary of terms for ISDNs ITU-T Q.1290 Recommendation ITU-T Q.1290 (1998), Glossary of terms used in the definition of intelligent n
37、etworks ITU-T Q.1742.4 Recommendation ITU-T Q.1742.4 (2005), IMT-2000 references (approved as of 30 June 2004) to ANSI-41 evolved core network with cdma2000 access network. ITU-T Y.101 Recommendation ITU-T Y.101 (2000), Global Information Infrastructure terminology: Terms and definitions. ITU-T Y.14
38、01 Recommendation ITU-T Y.1401 (2008), Principles of interworking ITU-T Y.2001 Recommendation ITU-T Y.2001 (2004), General overview of NGN. ITU-T Y.2011 Recommendation ITU-T Y.2011 (2004), General principles and general reference model for Next Generation Networks. ITU-T Y.2012 Recommendation ITU-T
39、Y.2012 (2010), Functional requirements and architecture of next generation networks. ITU-R M.1308 Recommendation ITU-R M.1308 (1997), Evolution of land mobile systems towards IMT-2000 ITU-R M.1645 Recommendation ITU-R M.1645 (2003), Framework and overall objectives of the future development of IMT-2
40、000 and systems beyond IMT-2000. ITU-R M.1822 Recommendation ITU-R M.1822 (2007), Framework for services supported by IMT. ITU-R 56-1 Resolution ITU-R 56-1 (2012), Naming for International Mobile Telecommunications. ETSI TS 123 002 ETSI TS 123 002 V7.1.0 (2006), Digital cellular telecommunications s
41、ystem (Phase 2+); Universal Mobile Telecommunications System (UMTS); Network architecture. ETSI TS 123 228 ETSI TS 123 228 V7.3.0 (2006), Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); IP Multimedia Subsystem (IMS); Stage 2. ITU-R 57 Resolut
42、ion ITU-R57 (2007), Principles for the process of development of IMT Advanced TIA-873.002 TIA-873.002-A (2006), All-IP Core Multimedia Domain, IP Multimedia Subsystem Stage 2. 3 Definitions 3.1 Terms defined elsewhere This Supplement uses the following terms defined elsewhere: 3.1.1 evolution ITU R
43、M.1308: A process of change and development of a mobile radio system towards enhanced capabilities. Q series Supplement 66 (07/2014) 3 3.1.2 evolution towards IMT-2000 ITU R M.1308: A process of change and development of a mobile radio system towards the capabilities and functionalities of IMT-2000.
44、 3.1.3 integrated services digital network ITU-T I.112: An integrated services network that provides digital connections between user-network interfaces. 3.1.4 IP-based networks ITU-T Y.1401: A network in which IP is used as one of the Layer 3 protocols. 3.1.5 migration to IMT-2000 ITU R M.1308: Mov
45、ement of users and/or service delivery from existing telecommunication network to IMT-2000. 3.1.6 next generation network ITU-T Y.2001: A packet-based network able to provide telecommunication services and able to make use of multiple broadband, QoS-enabled transport technologies and in which servic
46、e-related functions are independent from underlying transport-related technologies. It enables unfettered access for users to networks and to competing service providers and/or services of their choice. It supports generalized mobility which will allow consistent and ubiquitous provision of services
47、 to users. 3.1.7 public switched telephone network ITU-T Q.1290: A telecommunications network established to perform telephone services for the public subscribers. 3.1.8 ubiquitous networking ITU-T Y.2002: The ability for persons and/or devices to access services and communicate while minimizing tec
48、hnical restrictions regarding where, when and how these services are accessed, in the context of the service(s) subscribed to. 4 Abbreviations and acronyms This Supplement uses the following abbreviations and acronyms: 1G First Generation Network 2.5G 2.5 Generation Networks 2G Second Generation Net
49、work 3G Third Generation Network 4G Fourth Generation Network AMPS Advanced Mobile Phone System ANSI American National Standards Institute API Application Programming Interface ARPU Average Revenue Per User CAPEX Capital Expenditures CATV Cable Television CDMA Code Division Multiple Access CPE Customer Premise Equipment EDGE Enhanced Data rates for GSM Evolution EPC Experiment Pointing Control ETSI European Telecommunications Standards Institute GPRS General Packet Radi
