1、 INTERNATIONAL TELECOMMUNICATION UNION ITU-T Q.1761TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (01/2004) SERIES Q: SWITCHING AND SIGNALLING Signalling requirements and protocols for IMT-2000 Principles and requirements for convergence of fixed and existing IMT-2000 systems ITU-T Recommendation Q
2、.1761 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 APPLICABLE TO ITU-T STANDARD SYSTEMS Q.100Q.119 SPE
3、CIFICATIONS 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 SYSTEM No. 1 Q.850Q.999 PUBLIC LAND MOBILE NETWORK
4、 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.1900Q.1999 BROADBAND ISDN Q.2000Q.2999 For further d
5、etails, please refer to the list of ITU-T Recommendations. ITU-T Rec. Q.1761 (01/2004) i ITU-T Recommendation Q.1761 Principles and requirements for convergence of fixed and existing IMT-2000 systems Summary This Recommendation describes requirements for the use of fixed networks in the role of fixe
6、d access networks for IMT-2000 networks. This convergence of fixed networks and IMT-2000 networks enables mobile users to roam outside the serving area of their IMT-2000 network and still have access to the same set of services outside their IMT-2000 network boundaries as they do within those bounda
7、ries. This Recommendation also describes the framework for fixed mobile convergence and the capability requirements for enhanced fixed terminals that may be utilized to enhance the roaming IMT-2000 users experience. This Recommendation also details the mobility management functional requirements in
8、fixed networks in support of roaming IMT-2000 subscribers. Source ITU-T Recommendation Q.1761 was approved on 10 January 2004 by ITU-T Study Group SSG (2001-2004) under the ITU-T Recommendation A.8 procedure. Keywords Convergence, fixed, IMT-2000, mobile. ii ITU-T Rec. Q.1761 (01/2004) FOREWORD The
9、International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. 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 Recom
10、mendations on them with a view to standardizing 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
11、approval of ITU-T Recommendations is covered 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 Recommendation, the expression “Adminis
12、tration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure e.g. interoperability or applicability) and compli
13、ance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is
14、 required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Int
15、ellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendatio
16、n. However, implementors are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database. ITU 2004 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of
17、 ITU. ITU-T Rec. Q.1761 (01/2004) iii CONTENTS Page 1 Scope 1 2 References. 1 2.1 Normative references 1 2.2 Informative references 1 3 Definitions 2 4 Abbreviations 3 5 Conventions 3 6 Aim of fixed/mobile convergence 4 6.1 Broad objectives . 4 6.2 Convergence and harmonization 4 6.3 Globally accept
18、ed user identity module . 4 6.4 Network environment for IMT-2000 mobile users 4 6.5 Service requirements 5 6.6 Global network requirements . 5 7 High-level principles 5 7.1 Categories of enhancements. 5 7.2 Use of a fixed network as an IMT-2000 “fixed access network“. 6 7.3 General enhancements to f
19、ixed networks to support mobile users 7 8 Framework for fixed mobile convergence 8 8.1 FMP interfaces 9 8.2 Inter-operator arrangements for converged network roaming 10 8.3 Service registration. 10 8.4 Mechanism of unique user identity 11 9 Capability requirements for enhanced fixed terminal (FTE) 1
20、1 9.1 Signalling capability requirement. 12 9.2 User identity association requirement 12 9.3 Enhanced user interface. 12 9.4 Power requirement 13 10 Mobility management functional requirements in fixed networks. 13 11 International emergency preference schemes in fixed mobile convergence 14 iv ITU-T
21、 Rec. Q.1761 (01/2004) Introduction The evolution of individual core network technologies towards common Internet Protocol (IP)-based solutions provides long-term opportunities for the convergence of diverse network technologies. This convergence provides, in turn, opportunities for extending the re
22、ach and scope of services that a user of one of these networks may obtain beyond what could be supported in a pre-converged environment. As these long-term convergence opportunities emerge and stabilize, there are opportunities in the near to medium term that may be enabled by providing capabilities
23、 to enable IMT-2000 roamers to access their basic and enhanced services, possibly excluding terminal mobility, in environments where IMT-2000 is not yet deployed. ITU-T Rec. Q.1761 (01/2004) 1 ITU-T Recommendation Q.1761 Principles and requirements for convergence of fixed and existing IMT-2000 syst
24、ems 1 Scope This Recommendation describes the requirements for supporting a mobile IMT-2000 user roaming to a fixed network such that the IMT-2000 user may obtain basic services plus access to the users services per the subscription profile. A number of service level scenarios are possible. This sit
25、uation provides personal mobility among fixed network users and may exclude terminal mobility. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the
26、 editions indicated were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently
27、 valid ITU-T Recommendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. 2.1 Normative references 1 ITU-T Recommendation Q.1701 (1999), Framework for IMT-2000 networks. 2 ITU-T Recommendat
28、ion Q.1702 (2002), Long-term vision of network aspects for systems beyond IMT-2000. 3 ITU-T Recommendation Q.1711 (1999), Network functional model for IMT-2000. 4 ITU-T Recommendation Q.1741.1 (2002), IMT-2000 references to release 1999 of GSM evolved UMTS core network with UTRAN access network. 5 I
29、TU-T Recommendation Q.1741.2 (2002), IMT-2000 references to release 4 of GSM evolved UMTS core network with UTRAN access network. 6 ITU-T Recommendation Q.1742.1 (2002), IMT-2000 references to ANSI-41 evolved core network with cdma2000 access network. 2.2 Informative references 7 ETSI ES 201 912 V1.
30、1.1 (2002-01), Access and Terminals (AT); Short Message Service (SMS) for PSTN/ISDN; Short Message Communication between a fixed network Short Message Terminal Equipment and a Short Message Service Centre. 8 ETSI ES 201 986 V1.2.1 (2003-04), Services and Protocols for Advanced Networks (SPAN); Short
31、 Message Service (SMS) for PSTN/ISDN; Service Description. 9 ETSI TS 103 912 V1.2.1 (2003-01), Access and Terminals (AT); Short Message Service (SMS) for PSTN/ISDN; Short Message Communication between a fixed network Short Message Terminal Equipment and a Short Message Service Centre (Corrections to
32、 ES 201 912 V1.1.1). 10 ITU-T Recommendation Q.1521 (2000), Requirements on underlying networks and signalling protocols to support UPT. 2 ITU-T Rec. Q.1761 (01/2004) 3 Definitions This Recommendation defines the following terms: 3.1 convergence: Coordinated evolution of formerly discrete networks t
33、owards uniformity in support of services and applications. 3.2 discrete mobility: See “Nomadism“. 3.3 discrete terminal mobility: Ability to have discrete mobility using the same terminal. 3.4 enhanced fixed network: Fixed network with the Fixed Mobility Plane and hence capable of communicating with
34、 other IMT-2000 family member CNs to support roaming with those networks. 3.5 fixed access network: Existing fixed network with no mobility providing a transport service between end user terminal and FMP in a transparent manner. No changes are visualised in the fixed network to support this transpor
35、t service. 3.6 fixed mobile convergence: Mechanism by which an IMT-2000 user can have his basic voice as well as other services through a fixed network as per his subscription options, capability of the access technology. 3.7 fixed mobility plane: Additional capability in the fixed network to add re
36、quired capabilities of IMT-2000 family member CN. 3.8 mobility: Ability to provide services irrespective of changes that may occur by user/terminals activities. The user is able to change his network access point, as he moves, without interrupting his current service session, i.e., handovers are pos
37、sible. In some situations, the handover may lead to a briefly suspended service session or it may require a change in the level of service provided as a consequence of the capabilities of the new access point to which the user has become connected through the handover process. 3.9 nomadism: Ability
38、of the user to change his network access point after moving; when changing the network access point, the users service session is completely stopped and then started again, i.e., there is no handover possible. It is assumed that the normal usage pattern is that users shutdown their service session b
39、efore moving to another access point or changing terminal. This is the mobility alluded to in the case of fixed mobile convergence. 3.10 personal mobility: Ability of a user to access telecommunication services at any terminal on the basis of a personal identifier, and the capability of the network
40、to provide those services according to the users service profile. Note that personal mobility involves the network capability to locate the terminal associated with the user for the purposes of addressing, routing and charging of the users calls. 3.11 roaming: Ability to provide service to a user th
41、rough access from a network different than the network he has subscribed to. This defines the visited and the home networks respectively. 3.12 terminal mobility: Ability of a terminal to access telecommunication services from different locations and while in motion, and the capability of the network
42、 to identify and locate that terminal. 3.13 universal global terminal: A terminal equipment that supports all IMT-2000 radio interfaces and associated protocols. ITU-T Rec. Q.1761 (01/2004) 3 4 Abbreviations This Recommendation uses the following abbreviations: 2G Second Generation 3G Third Generati
43、on AT Access and Terminals CATV Community Antenna Television CN Core Network EFN Evolved Fixed Network EG ETSI Guideline ES ETSI Standard ETSI European Telecommunications Standards Institute FAP Fixed Access Point FAN Fixed Access Network FMC Fixed Mobile Convergence FMP Fixed Mobility Plane FTE Enh
44、anced Fixed Terminal GSM Global System for Mobile Communications IMT-2000 International Mobile Telecommunications-2000 IP Internet Protocol ISDN Integrated Services Digital Network ISP Internet Service Provider LAN Local Area Network NGN Next Generation Network POTS Plain Old Telephone Service PSDN
45、Packet Switched Data Network PSTN Public Switched Telephone Network SMS Short Message Service UPT Universal Personal Telecommunications USO Universal Service Obligation VHE Virtual Home Environment WISP Wireless ISP WLAN Wireless Local Area Network WLL Wireless Local Loop 5 Conventions There is no p
46、articular notation, style, presentation, or other conventions used within this Recommendation. 4 ITU-T Rec. Q.1761 (01/2004) 6 Aim of fixed/mobile convergence 6.1 Broad objectives The broad objective of next generation IMT-2000 networks is to enable global roaming and the access to the same set of s
47、ervices across different IMT-2000 family network boundaries. Seamless services provisioning across the heterogeneous fixed (i.e., PSTN, ISDN, PSDN, WAN/LAN/CATV, etc.) and evolving mobile networks should be guaranteed in the converged systems. The convergence of various types of networks both provid
48、es an opportunity and makes it necessary to address the mechanisms needed to enable IMT-2000 users to take advantage of converged networks as a base for extending their reachability for basic voice service, as well as their specific services as per the subscription options they select. Global roamin
49、g should be achieved independently, as far as possible, of the access mechanism or the technology deployed as the access network. An IMT-2000 mobile network user should be able to register in a fixed network as a foreign subscriber and should be able to obtain the same set of services normally available in the subscribers home network, except terminal mobility. Suitable mechanisms for handling a foreign subscribers registration, authentication and access to that users service profile server of the home network by the visiting fixed network need t
