1、 Rec. ITU-R M.1822 1 RECOMMENDATION ITU-R M.1822 Framework for services supported by IMT (2007) TABLE OF CONTENTS Page 1 Introduction 2 2 Scope 2 3 Related ITU documents 3 4 List of definitions, acronyms and abbreviations. 3 4.1 Definitions 3 4.2 Acronyms and abbreviations 3 5 Considerations 4 6 Rec
2、ommendation 5 2 Rec. ITU-R M.1822 1 Introduction International 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 a
3、dvanced mobile services, supported by mobile and fixed networks, 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 capabil
4、ities for high-quality multimedia applications within a wide 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 sup
5、port a wide range of services and applications in a cost efficient 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, se
6、rvices and equipment; worldwide roaming capability; enhanced peak data rates to support advanced services and applications (100 Mbit/s for high and 1 Gbit/s for low mobility were established as targets for research)1. These features enable IMT-Advanced to address evolving user needs. The capabilitie
7、s of IMT-Advanced systems are being continuously enhanced in line with user trends and technology developments. The framework and overall objectives of the future development of IMT-2000 and systems beyond IMT-2000 are described in Recommendation ITU-R M.1645. Furthermore, based on Recommendation IT
8、U-R M.1645, ITU-R had developed IMT-Advanced related documents such as Reports ITU-R M.2072 and ITU-R M.2074. IMT-Advanced is expected to be a platform that could provide novel services, which are either a profound improvement of present ones or a revolution that leads to applications that might cha
9、nge peoples lives. Therefore, one of the most important tasks is to provide a framework for the high-level requirements for services to be delivered by IMT from end-users point of view and illuminate the requirements from other perspectives on this basis. 2 Scope This Recommendation addresses the hi
10、gh-level requirements for telecommunication services and applications to be supported by IMT, including the future development of IMT-2000 and IMT-Advanced. It includes service parameters and service classifications of IMT. This Recommendation also includes examples of telecommunication services tha
11、t may be supported by IMT. 1Data rates sourced from Recommendation ITU-R M.1645. Rec. ITU-R M.1822 3 3 Related ITU documents List of related ITU-R Recommendations and Reports: 1 Recommendation ITU-R M.816-1 Framework for services supported on International Mobile Telecommunications-2000 (IMT-2000).
12、2 Recommendation ITU-R M.1645 Framework and overall objectives of the future development of IMT-2000 and systems beyond IMT-2000. 3 Report ITU-R M.2072 World mobile telecommunication market forecast. 4 Report ITU-R M.2074 Radio aspects for the terrestrial component of IMT-2000 and systems beyond IMT
13、-2000. 5 Recommendation ITU-R M.1079-2 Performance and quality of service requirements for International Mobile Telecommunications-2000 (IMT-2000) access networks. List of related ITU-T Recommendations: 1 ITU-T Recommendation Q.1702 Long-term vision of network aspects for systems beyond IMT-2000. 2
14、ITU-T Recommendation Q.1703 Service and network capabilities framework of network aspects for systems beyond IMT-2000. 3 ITU-T Recommendation Y.2001 General overview of NGN. 4 ITU-T Recommendation Y.2011 General principles and general reference model for Next Generation Networks. 4 List of definitio
15、ns, acronyms and abbreviations 4.1 Definitions None. 4.2 Acronyms and abbreviations ID: Identification IMAP: Internet message access protocol IMT: International Mobile Telecommunications IP: Internet protocol IT: Information technologies ITS: Intelligent transport systems LAN: Local area network MMS
16、: Multimedia messaging service MOS: Mean opinion score PDA: Personal digital assistants POP: Post office protocol PSAP: Public safety answering point PTT: Push-to-talk QoS: Quality of service 4 Rec. ITU-R M.1822 RX: Receive SMS: Short messaging service TX: Transmit URL: Uniform resource locator VoIP
17、: Voice over IP 5 Considerations The ITU-R Radiocommunication Assembly, considering a) the possible involvement of several types of networks; b) the increasing technical developments and opportunities; c) the need of many users for services which are not bounded by geography or operators; d) the nec
18、essity of priority services (e.g. emergency calls shall be supported as higher priority than other commercial services); e) that the services supported by IMT will be operated in an environment which requires recognition of the following factors: e-1) Low cost: Users want diverse, affordable, and co
19、nvenient mobile services. Such demands will be realized by development of technology that will reduce the cost per packet. e-2) High data rate: Services such as video phone, streaming, and video-on-demand, which are currently available via wired networks will be required to be supported via wireless
20、 networks with higher broadband capacity with anytime, anywhere availability. e-3) Convergence: The rapid development of information technology (IT), including the Internet, has resulted in the aggregation and convergence of various networks and digital devices. In addition to the aggregation of dat
21、a and voice, the integration of wired and wireless communications is ongoing. e-4) Personalization: As society becomes diversified, user-customized, personalized services will need to be provided in lieu of the existing standardized services. e-5) Wide range of terminals: A wide range of terminals i
22、s desired for future mobile services. Some users may need an affordable voice-centric terminal while other users would prefer a versatile mobile phone that could provide not only traditional functions like telephony, but also utilities such as a digital camera, music and movie player, map guidance,
23、e-Wallet, etc. For connecting to the electric, electronic, and mechanical machine surrounding user, short-range communication devices could be merged to the terminals. e-6) Multiple profile: Services should support multiple profiles in various environments. For example, voice telephony may support m
24、any different quality levels. In some cases, a voice call has a typical data rate of 12.2 kbit/s, while in other cases, a voice call may have a data rate of 40 kbit/s. From a users viewpoint, voice telephony is one single service, but may support multiple profiles in multiple environments. e-7) Mult
25、i-application support: Users will simultaneously use several services. One example is that a user could make a phone call while continuing to walk under the guidance of a real-time map downloaded to the same device. Rec. ITU-R M.1822 5 e-8) Environment awareness: The services will support an environ
26、ment-awareness function. This means that the services can automatically adapt to different environments. Users will not need to change the settings of the application manually. Environment information can be acquired, understood and handled by the services themselves; f) that the following technolog
27、y trends are contributing to the development of new and novel services for wireless applications: f-1) Personal networking: Connecting different electronic devices within a persons immediate surroundings to facilitate real-time communication of data (e.g. multimedia, file transfer, connection to Int
28、ernet). f-2) Home networking: Connecting the different electronic devices and appliances in a household by way of a local area network (LAN) to allow for real-time communication of data (e.g. multimedia, remote control, connection to Internet, file transfer). f-3) Intelligent transportation and vehi
29、cular networking: Broad range of diverse technologies applied to transportation to make systems safer, more efficient, more reliable and more environmentally friendly. f-4) Virtual communities: A virtual or online community is a group of people who primarily or initially communicate or interact via
30、the Internet. f-5) Context awareness: It is expected that the integration and convergence of information technology, telecommunications, and content will result in new service delivery dynamics and a new paradigm in telecommunications where value-added services, such as those which are location depe
31、ndent, will provide significant benefits to both the end users and the service providers; g) that the list of examples in Annex 1 may be supported by IMT systems. 6 Recommendation The ITU Radiocommunication Assembly, recommends 1 that the following high-level requirements should be used for the tele
32、communication services and applications to be supported by IMT, taking into account that the requirements may be different from one service offering to another. Seamless connectivity Seamless handover to support user mobility was stated as a requirement for IMT-2000. It remains a requirement for IMT
33、-Advanced. In addition, IMT-Advanced should support seamless handover to at least one of the IMT-2000 family members. Requirements of various seamless services are shown in ITU-T Recommendations Q.1703, Y.2001 and Y.2011. It is necessary to take into consideration the factors shown below. Mobility m
34、anagement As described in Recommendation ITU-R M.1645, IMT is needed to continue service under nomadic, slow and high mobility conditions without conscious cooperation of the users. Interoperability When users are in multimodal service with IMT and other services, the users should not need to be awa
35、re of the type of system. 6 Rec. ITU-R M.1822 Constant connection Some of the applications, such as network-camera and monitoring, constantly transmit data. These types of applications require constant connection services. Application scalability For continuous service, IMT is required to maintain s
36、ervices despite changes of condition by adapting the data rate and/or the error tolerance of the application. Security Some applications, such as voice over IP and video telephony need to authenticate the user with the telephone number, and other applications (such as secure m-Commerce) require the
37、assurance of data integrity. IMT is required to support high security services to prevent security breaches such as eavesdropping and spoofing. Useful information concerning security is described in several Recommendations such as ITU-T Recommendations H.235 and Q.1703. Prioritization In the Report
38、ITU-R M.2072, applications with urgency, such as emergency/disaster/disaster prediction, are described. Such applications require higher priority than other applications. IMT needs to support prioritization of access to network resources. Location Many location-based services need to acquire the inf
39、ormation on the users position. An important aspect of this capability is the ability to protect the privacy information of the user. Broadcast/multicast Broadcast applications, broadcasting programmes and IP broadcast high definition TV and video are described in Report ITU-R M.2072. There are also
40、 multicast applications for specified users, such as collaborative working (application sharing), other than broadcasting services for the general public. Efficient support for point-to-multipoint transmission is required because broadcast and multicast services are expected to be an important part
41、of an operators service offering in the future. Presence Presence allows a set of users to be informed about the availability, willingness and means of communication of the other users in a group. Usability The mobile services for IMT should be easy and convenient to use for users when they want to
42、access desired services. The usability may include the following two aspects: Voice recognition Natural languages are more flexible interaction methods making IMT easier to use. So voice recognition will be a promising feature for future mobile applications. User-friendly human-to-machine interface
43、Good user experience plays a crucial role in the acceptance and usability of services. Since many advanced features and services will be provided in IMT systems, it is very important to enable a user-friendly human-to-machine interface. Rec. ITU-R M.1822 7 Support for a wide range of services A wide
44、 range of services are currently delivered by IMT-2000 to mobile users. Many of the service examples in Annex 1 are offered. IMT is required to have the ability to offer a wide range of telecommunication services. While a specific set of services is not required, the service parameters and service c
45、lassifications in Annex 2, Sections A2.1 and A2.2 respectively, should be used to ensure that a wide range of telecommunication services to mobile users can be provided by IMT. Annex 1 Examples This list provides a wide range of telecommunication service offerings that will increase as new applicati
46、ons are developed based on the advancement of technology. Messaging Messaging services (e.g. SMS, MMS and e-mail) exchange messages between user terminals. Video messaging service is comparable to voicemail with a video accompanying the voice message. Voice telephony Voice communication involving tw
47、o or more parties that includes features such as call waiting, conference calling, voicemail, message waiting indication, caller ID and calling name ID. VoIP is a form of voice telephony service, which is described in ITU-T Recommendation H.323. Push-to-talk/Push-to-X Push-to-talk is a two-way commu
48、nication service allowing one participant at a time to speak, and is not meant to be a replacement for normal voice telephony calls. Its design should allow for instant access, simplicity, a quick exchange of information between users and the efficient use of network resources. The basic functionali
49、ty described above can also be enhanced to support a whole series of push-to-X services. Examples are push-to-view, which allows users to share images during a PTT call, push-to-find, where location information is transferred, or push-to-show. High-quality video telephony High-quality video telephony is full-duplex, real-time audiovisual communication between or among end users. It may be provided as a complement of traditional voice telephony service. Visual telephone systems, multimedia conversational services, and video telephony services
