1 / 12

Semantic Web Services in the environment of Next Generation Network

Semantic Web Services in the environment of Next Generation Network. Jana Viskova. Contents. Motivation for NGN NGN definition NGN standardisation NGN architecture NGN Service layer NGN Web Services example NGN Semantic Web Services. Motivation for NGN (1).

vaughan-best
Download Presentation

Semantic Web Services in the environment of Next Generation Network

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Semantic Web Services in the environment ofNext Generation Network Jana Viskova

  2. Contents • Motivation for NGN • NGN definition • NGN standardisation • NGN architecture • NGN Service layer • NGN Web Services example • NGN Semantic Web Services

  3. Motivation for NGN (1) • Dedicated networks for specific services • Orientation towards information (knowledge) society • E-government, E-learning, E-medicine, E-commerce • New combined telecom/IT, fixed/mobile applications • Liberalisation of telecom market • Horizontal and vertical • New player and new revenues • Access providers -> Network resources providers -> Service providers (virtual operators, 3rd parties) -> Content providers -> Users • Dynamic IT development strategy in telecom domain

  4. Motivation for NGN (2) • Dedicated networks for specific services • Circuit switched network • Quality guaranteed real-time communication • Fixed (PSTN) and mobile (GSM) transmission media • Dedicated communication channel • Synchronous communication • Signalling • Creation, modification and termination of connections • Resources reservation • Packet switched network • Best effort, non-real time communication in burst • Fixed (IP ever Ethernet Tx) and mobile (GPRS) transmission media • Independently routed packets • Asynchronous communication • No need for signalling

  5. Motivation for NGN (3) • Convergence efforts • Data services delivered over PSTN circuit-switched network • ISDN - dedicated limited bandwidth, time based billing • PSTN services delivered over data packet-switched network • “IP telephony” - QoS guaranteed only in separate domains • Virtual circuits – combination of circuit & packet switched approach • ATM – expensive and high requirements on network management • Technology development • Broadband access and transport (xDSL, SDH, …) • Higher speed routing and QoS guaranties (IPv6, MPLS, …) • Standardized signalling protocols for IP (SIP, RSVP, H.323, …) • Service platforms for telecom and IT integration

  6. NGN definition • User perspective • NGN enables users to get the information content they want in any media/format, over any facilities, anytime, anywhere and in any volume.[Telcordia] • Operator-provider perspective • NGN enables simpler, more competitive creation, operation and provisioning of services of different nature and requirements over a convergent transport network independently on the access network. [ETSI] • NGN is a model for future telecommunication networks • NGN is not a new network to be build

  7. NGN standardisation • Magic quadrant

  8. NGN architecture • Layered architecture • Open standard interfaces Control layer • Signalling for real-time services • Control of other layers Transport network • High speed backbone with packet switching • Support of services with different requirements (delay, jitter, packet loss, ... ) • Independent on the access network (gateways)

  9. NGN Service layer (1) • Rapid and simple service creation, implementation and provisioning • Secure access to the network capabilities from un-trusted domain • Open access to the network capabilities to large developers community • Basic building blocks of services capabilities • Transparency to the underlying network technology • Possible integration of telecom, IT, enterprise applications • Access to external resources (DB, presence, media servers, …)

  10. NGN Service layer (2)

  11. NGN Web Service example SMStoCall

  12. NGN Semantic Web Services • Semantic interface for telecom network • Parlay X Semantic Web Services • SIP grounding • Semantic Web Service use case in NGN • Pure telecom use case • Mixed IT/telecom use case • KW deliverable: Invocation and Interoperation SWS • Service interaction • Specific non-functional properties - SLA, trust issues, billing • Testing environment - Focus Parlay playground within NGN Initiative

More Related