1、 INTERNATIONAL TELECOMMUNICATION UNION ITU-T Q.1703TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (05/2004) SERIES Q: SWITCHING AND SIGNALLING Signalling requirements and protocols for IMT-2000 Service and network capabilities framework of network aspects for systems beyond IMT-2000 ITU-T Recommend
2、ation Q.1703 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.
3、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 SYSTEM No. 1 Q.850Q.999 PUBLIC LAND MOBILE
4、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.1900Q.1999 BROADBAND ISDN Q.2000Q.2999 For fu
5、rther details, please refer to the list of ITU-T Recommendations. ITU-T Rec. Q.1703 (05/2004) i ITU-T Recommendation Q.1703 Service and network capabilities framework of network aspects for systems beyond IMT-2000 Summary This Recommendation specifies the service and network capability framework for
6、 systems beyond IMT-2000, from the network aspects, in order to attend the high level end-user needs delineated in the ITU long-term vision for systems beyond IMT-2000, as specified in ITU-T Recs Q.1701 and Q.1702 and ITU-R Rec. M.1645. Source ITU-T Recommendation Q.1703 was approved on 29 May 2004
7、by ITU-T Special Study Group (SSG) (2001-2004) under the ITU-T Recommendation A.8 procedure. Keywords Network capability framework, service capability framework, systems beyond IMT-2000. ii ITU-T Rec. Q.1703 (05/2004) FOREWORD The International Telecommunication Union (ITU) is the United Nations spe
8、cialized 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 Recommendations on them with a view to standardizing telecommunications on
9、 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 covered by the procedure laid do
10、wn 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 “Administration“ is used for conciseness to indicate both a telecommunication
11、 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 compliance with the Recommendation is achieved when all of these mandatory
12、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 required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attent
13、ion 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 Intellectual Property Rights, whether asserted by ITU members or others
14、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 Recommendation. However, implementors are cautioned that this may not represent th
15、e 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 ITU. ITU-T Rec. Q.1703 (05/2004) iii CONTENTS Page 1 Scope 1 2 Refer
16、ences. 1 2.1 Normative references 1 2.2 Informative references 2 3 Definitions 2 4 Abbreviations 4 5 Introduction 5 5.1 Envisaged capabilities for systems beyond IMT-2000 5 5.2 Key study items for systems beyond IMT-2000 6 6 Service capability framework from network aspects 7 6.1 Service capability
17、design objectives. 7 6.2 Service creation 7 6.3 Service provisioning. 8 6.4 Service management. 10 6.5 Virtual environment service . 11 7 Network capability framework. 12 7.1 Network design objectives . 12 7.2 Mobility management. 14 7.3 Session management 18 7.4 QoS management 20 7.5 Transportation
18、 control 24 7.6 Traffic transportation 26 7.7 Network resource management 27 7.8 System interoperability. 27 7.9 Multiple access support and radio resource management 28 7.10 Enhanced accounting, charging and billing support. 29 7.11 Enhanced OAM users of this Recommendation are therefore encouraged
19、 to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document
20、, the status of a Recommendation. 1 ITU-T Recommendation Q.65 (2000), The unified functional methodology for the characterization of services and network capabilities including alternative object oriented techniques. 2 ITU-T Recommendation Q.1214 (1995), Distributed functional plane for intelligent
21、network CS-1. 3 ITU-T Recommendation E.410 (1998), International network management General information. 4 ITU-T Recommendation E.418 (2003), Framework for network management of IMT-2000 networks. 5 ITU-T Recommendation M.3400 (2000), TMN management functions. 6 ITU-T Recommendation M.3210.1 (2001),
22、 TMN management services for IMT-2000 security management. 7 ITU-T Recommendation Q.1701 (1999), Framework for IMT-2000 networks. 8 ITU-T Recommendation Q.1702 (2002), Long-term vision of network aspects for systems beyond IMT-2000. 9 ITU-T Recommendation Q.1711 (1999), Network functional model for
23、IMT-2000. 2 ITU-T Rec. Q.1703 (05/2004) 10 ITU-R Recommendation M.1645 (2003), Framework and overall objectives of the future development of IMT-2000 and systems beyond IMT-2000. 11 ITU-T Recommendation H.323 (2003), Packet-based multimedia communications systems. 12 ITU-T Recommendation G.1010 (200
24、1), End-user multimedia QoS categories. 13 ITU-T Recommendation Y.1541 (2002), Network performance objectives for IP-based services. 14 ITU-T Recommendation M.3100 (1995), Generic network information model. 15 ITU-R Recommendation M.687-2 (1997), International Mobile Telecommunications-2000 (IMT-200
25、0). 16 ITU-T Recommendation Q.1241 (2001), Introduction to Intelligent Network Capability Set 4. 17 ITU-T Recommendation Q.1721 (2000), Information flows for IMT-2000 Capability Set 1. 2.2 Informative references 18 ITU-T Handbook on Quality of Service and Network Performance (1993). 19 ETSI ES 201 9
26、15 series: Open Service Access (OSA); Application Programming Interface (API). 3 Definitions This Recommendation defines the following terms: 3.1 attachment and access capability: The ability of a terminal to power on and gain access to a serving network, home or visited. 3.2 billing: Administrative
27、 function to prepare bills to service customers, to prompt payments, to obtain revenues and to take care of customer reclaims. 3.3 continuous mobility (handover): The ability of a mobile user/terminal/network to change location while media streams are active. Handover is further called seamless when
28、 the mobile entitys location change does not result in delay or loss of data that would be perceived by the user as degradation of quality of service. 3.4 discrete mobility (roam): The ability of a mobile user/terminal/network to make discrete changes of location, i.e., to change location while no m
29、edia streams are active. 3.5 mobility: The ability to provide services irrespective of environment changes that may occur by mobile user/terminal/networks activities. 3.6 mobility management: The set of functions used to manage a mobile user accessing a network other than that users home network. Th
30、ese functions include communication with the home network for purposes of authentication, authorization, location updating and download of user information. 3.7 network capability: A capability of a network that is utilized to support service capabilities but which is not itself a service capability
31、. 3.8 network mobility: The ability of a network, where a set of fixed or mobile nodes are networked to each other, to change, as a unit, its point of attachment to the corresponding network upon the networks movement itself. 3.9 personal mobility: The ability of a user to receive subscribed service
32、 independent of the terminal in use as long as that terminal and access network can support the subscribed service. ITU-T Rec. Q.1703 (05/2004) 3 3.10 Quality of Service (QoS): The collective effect of service performance which determine the degree of satisfaction of a user of a service. It is chara
33、cterized by the combined aspects of performance factors applicable to all services, such as bandwidth, latency, jitter, traffic loss, etc. 3.11 QoS parameters: QoS parameters are quantifiable characteristics of a service that can be specified by users of that service and which collectively determine
34、 the quality of the users experience, e.g., bandwidth, delay, jitter, packet loss, priority, traffic class, etc. QoS parameters are non-subjective characteristics of a service and are specified in terms of numeric values. 3.12 seamless service: Seamless Service will prevent users experiencing any se
35、rvice disruptions while maintaining mobility or portability. 3.13 service: A stand-alone commercial offering, characterized by one or more core service features, and can be optionally enhanced by other service features. Business aspects of a service offering may include bundling of various services,
36、 pricing, terminal subsidies, the provisioning of the sales channels, end-user consulting, etc. 3.14 service capability: The capability of a network to offer a service or service feature to subscribers. A service capability becomes visible to a user or subscriber as part of a service or service feat
37、ure provided by a network operator. Service capabilities depend on network capabilities. 3.15 service creation: The conception, design and implementation of a capability to provide a service. 3.16 service feature: A specific aspect of a telecommunication service that can also be used in conjunction
38、with other telecommunication services/service features. 3.17 service interface: The interface between a service application and the core network capabilities used by that service application in delivering a service to a user. 3.18 service level agreement: An agreement between operators/service provi
39、ders or between users and service providers defining the level of service to a user(s), that is used as a basis for a business contract. 3.19 service portability: The ability to access any services offered anywhere within the roaming domain of the users at any time. 3.20 session mobility: The abilit
40、y of the mobile user/terminal/network to maintain sessions while changing between terminal devices and across various access and core networks. 3.21 subscription portability: Consistency of certain service attributes when a subscriber changes service provider (e.g., mobile number, email address). 3.
41、22 terminal: The customers access equipment used to request and terminate network associated connectivity services. 3.23 terminal mobility: The ability of a terminal to access telecommunication services from different locations and while in motion, and the capability of the network to identify and l
42、ocate that terminal. Terminal mobility can be further classified into: continuous terminal mobility (handover) and discrete terminal mobility (roam). 3.24 traffic flows control: A set of mechanisms used to control the flow of packets. Traffic Flow Control can be used to prevent the network from beco
43、ming overloaded by regulating the input rate transmissions, or to prevent unauthorized use of network resources. 3.25 transport: The functional process of transferring information between different locations. 3.26 Virtual Home Environment (VHE): The provision of a service experience to the mobile su
44、bscriber identical to, or as similar as possible to the service environment the subscriber experiences when served at his/her home location. 4 ITU-T Rec. Q.1703 (05/2004) 3.27 virtual home services: The ability of users to receive their home services with the same look and feel from any network and
45、on any terminal on the basis of personal (private) identification. 3.28 Virtual Reality Environment (VRE): The ability for users to access the sights and sounds of remotely located complex systems in real-time. 4 Abbreviations This Recommendation uses the following abbreviations: 2G Second Generatio
46、n 3G Third Generation API Application Programming Interface AS Application Server CS Capability Set/Circuit Switched CaS Call Server DoS Denial of Service DSL Digital Subscriber Line ETSI European Telecommunications Standards Institute ID Identity IETF Internet Engineering Task Force IMS IP Multimed
47、ia Subsystem IMT-2000 International Mobile Telecommunications-2000 IP Internet Protocol IPv6 Internet Protocol version 6 ISP Internet Service Provider LAN Local Area Network NNI Network-Network Interface OAM IP-based network platform, composed of: access network components; core network components;
48、user platform. 5.2 Key study items for systems beyond IMT-2000 As noted in ITU-T Rec. Q.1702 and ITU-R Rec. M.1645, there are many key technical areas that require focused study over the next several years leading to the establishment of standards for Systems Beyond IMT-2000. Based on the market tre
49、nds, technology trends, key long-term network design objectives, and long-term network architecture concepts, as identified in ITU-T Rec. Q.1702, the following study items are identified in order of priority: 1) Advanced mobility management: To allow flexible, efficient, and integrated mobility management that supports advanced location management, advanced routing management, session continuity, efficient and adaptive location registration, dynamic handling of Quality of Service (QoS) during handover, etc. Support of moving n
