service plateform for ngn networks

service plateform for ngn networks - KISS LAYOUT 8/21/06...

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IEEE Communications Magazine • September 2006 88 0163-6804/06/$20.00 © 2006 IEEE A DVANCES IN S ERVICE P LATFORM T ECHNOLOGIES FOR N EXT -G ENERATION M OBILE S YSTEMS I NTRODUCTION BACKGROUND AND MOTIVATION The current environment for deployment and access to communications services and the candi- dates which are being discussed for near-term deployment are rather static and centralized. They rely on prearrangement and subscription, rather than discovery. We need to enable dynam- ic discovery, invocation, and delivery of services which behave more like mobile entities than part of a fixed infrastructure. The strategy we outline here builds on existing IP Multimedia Subsystem (IMS) technologies and represents a fairly mod- est proposal to make significant progress toward a state where information and services flow freely without regard to limitations of geography or access devices. We approach the problem of untethering ser- vices by postulating a new type of network ele- ment which we call the Ubiquitous Service Platform Service Broker (USP-SB). The role of the USP-SB is to manage service flows, storage, and access to the information which is required for services to describe and reveal themselves, and for users to locate them when needed. A guiding principle of our approach is to uti- lize services provided by the underlying IMS net- work wherever possible to avoid reinvention and to make the USP as lightweight as possible. Thus we rely on the IMS capabilities, especially for authentication, authorization, and charging. The USP superstructure can be applied to other underlying networks with appropriate adjust- ments and enhancements. For example, the underlying infrastructure could be the Web ser- vices, which would force the USP either to implement one’s own solutions or to adopt other solutions such as Liberty Alliance’s single sign- on for user authentication. B3G SERVICE FEATURES There is no formal definition for “beyond 3G” (B3G), but there has been much speculation and anticipation about what comes after the develop- ments currently being pursued. The leading edge of Next-Generation Network evolution within 3GPP is represented by the IMS platform in Release 7 [1–3]. Various proposals are converg- ing on a wide-area, wireless broadband network which is optimized for data, yet capable of deliv- ering wireline voice and video as well. Services in the B3G network will be provid- ed by a variety of service providers who are separate from network operators, and will compete with each other to improve their qual- ity and reduce their cost. So far, mobile net- work operators have been taking the “walled garden” approach, where services are provided either by the network operators themselves or by those service providers who already have business relationship with them through tightly Andrew Do-Sung Jun, Gabor Kiss, and Hira Agrawal, Telcordia Technologies Inc. Hyunseo Park, Sookyang Kang, KyungChul Sihn, and DaeSik Kim, Electronics and Telecommunications
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This note was uploaded on 09/21/2010 for the course ECE 567 taught by Professor Attkin during the Spring '10 term at Academy of Design Tampa.

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service plateform for ngn networks - KISS LAYOUT 8/21/06...

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