NIPS ‘97 Sofia, October Broadband Network Architectures: Evolution towards Distributed Intelligence Broadband Network Architectures: Network Information Processing Systems ‘97 Juhana Räsänen, Vesa-Matti Puro, Petteri Koponen, Olli Martikainen Helsinki University of Technology Laboratory of Telecommunications Software and Multimedia Evolution towards Distributed Intelligence

NIPS ‘97 Sofia, October Broadband Network Architectures: Evolution towards Distributed Intelligence Motivation ATM and optical switching will increase the capacity of backbone networks xDSL and wireless access technologies will bring low-cost broadband access available to the residential users Result: Bandwidth will become a commodity, which makes services the most critical component of the future broadband networks

NIPS ‘97 Sofia, October Broadband Network Architectures: Evolution towards Distributed Intelligence Broadband scenario Backbone network (WDM, optical packet switching…) STB ? Broadband access networkResidential customer

NIPS ‘97 Sofia, October Broadband Network Architectures: Evolution towards Distributed Intelligence Traditional ATM networks ATM signalling Call Control ATM signalling Call Control ATM / AAL5 ATM switch

NIPS ‘97 Sofia, October Broadband Network Architectures: Evolution towards Distributed Intelligence Traditional ATM networks Traditional = commercially available Connection setup using signalling protocols, eg. ITU-T Q SS#7 + BISUP or ATM Forum UNI 3.x / PNNI The only service is the end-to-end ATM connectivity, either point-to-point or multicast How to introduce “real” services?

NIPS ‘97 Sofia, October Broadband Network Architectures: Evolution towards Distributed Intelligence IN enabled ATM ATM sig. Call Control / IN ATM signalling Call Control ATM / AAL5 Service Control Point Service Switching Point IN Services BINAP SS#7 BINAP

NIPS ‘97 Sofia, October Broadband Network Architectures: Evolution towards Distributed Intelligence IN enabled ATM Adds the concept of services by letting external service logics control the connection setup Service logic invocation through triggers that react to certain events of the call setup process Call forwarding, freephone, televoting … But: Can all intelligent services for broadband networks be built on PSTN service model?

NIPS ‘97 Sofia, October Broadband Network Architectures: Evolution towards Distributed Intelligence Distributed service logic Open Call Control ATM signalling Call Control ATM / AAL5 SCP SSP IN Services ATM sig. SSP Appl Trans- port Transport

NIPS ‘97 Sofia, October Broadband Network Architectures: Evolution towards Distributed Intelligence Distributed service logic The interface to the Call Control is opened for external service logics and end user applications The Call Control interface is accessed eg. using CORBA or other distributed programming tools A transport protocol, eg. TCP/IP or SS#7, is needed for carrying CORBA requests Is ATM signalling needed anymore?

NIPS ‘97 Sofia, October Broadband Network Architectures: Evolution towards Distributed Intelligence Intelligence Evolution Traditional ATM needs a service concept Introduction of IN creates the service concept, but does not satisfy broadband networking needs Service logic distribution can be achieved by opening the Call Control interface Result: ATM signalling (at least at the UNI) and traditional Call Model can be replaced

NIPS ‘97 Sofia, October Broadband Network Architectures: Evolution towards Distributed Intelligence Service control over IP Service Execution Environment ATM / AAL5 Service IP over ATM Appl IP over ATM Service Execution Environment Server Agent TCP/IP ATM switch

NIPS ‘97 Sofia, October Broadband Network Architectures: Evolution towards Distributed Intelligence Service control over IP The Call Control is replaced with an object- based environment into which service logics can be deployed as executable objects Service objects are able to control the network through interfaces provided by the Service Execution Environment All control data can be transported over TCP/IP

NIPS ‘97 Sofia, October Broadband Network Architectures: Evolution towards Distributed Intelligence Calypso architecture Based on the service control over IP idea Service-oriented: a platform for easy service creation and deployment The service logic objects are executed in a run- time Java environment, which provides the interfaces needed for service setup TV distribution will be demonstrated Dec 1997

NIPS ‘97 Sofia, October Broadband Network Architectures: Evolution towards Distributed Intelligence TV distribution service in Calypso STB / PC SEE IP over ATM Viewer Channel requests TV Broadcast Server Channel Manager Launch Infrared Remote Control Appl Agent

NIPS ‘97 Sofia, October Broadband Network Architectures: Evolution towards Distributed Intelligence Conclusion A new kind of service architecture is needed to support future needs of broadband networks ATM signalling and IN model can be at least partially replaced by distributed service model Calypso project develops an architecture in which the services are implemented with Java components that control an ATM switch directly