1 Mobile Networks logica Contents Confidential & Proprietary to Logica © 2001 Application-Level Active Networks Presented at Dublin Breakfast Briefing, 29th June 2001 Immo Hüneke Technical Architect, Wireless Internet

Mobile Networks logica Contents Confidential & Proprietary to Logica © June 2001Application-Level Active Networks Active Network Benefits Enabler for rapid network service creation / deployment standard languages automated device configuration Intelligent alternate-path routing (e.g. satellite down- link, “scatternet” configurations) Intelligent caching (e.g. specialised XML conversion) Content format conversion on the fly (e.g. video -> stream) Dynamic content (e.g. localised advertising) XML-policy-based management support, mobility support (including incremental code mobility)

Mobile Networks logica Contents Confidential & Proprietary to Logica © June 2001Application-Level Active Networks Possible Applications Transcoding Web content Smart Caching Multicast Bridging Reliable multicast Link-by-link compression Active Web pages Information filtering Alternate-path routing QoS Security Security proxies Personal profiles for mobile users

Mobile Networks logica Contents Confidential & Proprietary to Logica © June 2001Application-Level Active Networks Differing Interpretations USA DARPA-sponsored Concentration on intelligent packet routing Europe ESPRIT-sponsored Concentration on distributed processing  Programmable Networks  Application-Level Active Networks  Proxylets

Mobile Networks logica Contents Confidential & Proprietary to Logica © June 2001Application-Level Active Networks Information Model: Passive vs. Active Network Public Network Enterprise Network Active Gateway Active Node Active Node Network ProducerConsumer OwnerAdministrator Events, Policies Programs, Policies Events Policies Requests, Events, Policies Requests, Events Programs, Content, Policies Content, Events Programs, Policies Producer Consumer

Mobile Networks logica Contents Confidential & Proprietary to Logica © June 2001Application-Level Active Networks Active Services Networks Programs supplied by the users of the network Those programs will run on equipment owned by the operators Users have access to custom services that will be managed by them without the operators’ intervention Management system needs to be as lightweight as possible Packet redirection based on “active” tag in transport header or MIME type in application header

Mobile Networks logica Contents Confidential & Proprietary to Logica © June 2001Application-Level Active Networks ANDROID Architecture

Mobile Networks logica Contents Confidential & Proprietary to Logica © June 2001Application-Level Active Networks Active Server Architecture Based on the ALAN architecture Multiple execution environments are allowed to run on each active server Each execution environment is allowed to run one or more proxylets Each proxylet runs on its own Java virtual machine and can consist of more than one Java threads The management system manages locally the resources consumed by the proxylets and execution environments Thread resource consumption needs to be managed by application providers or the users themselves

Mobile Networks logica Contents Confidential & Proprietary to Logica © June 2001Application-Level Active Networks ALAN Components Available Today Execution Environment Dynamic Proxy Server (DPS a.k.a. FunnelWeb) Proxylet API Support Code launcher mon errorPrint Examples control tcpbridge audio transcoder Java radio

Mobile Networks logica Contents Confidential & Proprietary to Logica © June 2001Application-Level Active Networks Example: Aircraft Services 64Kbps 2Mbps Internet

Mobile Networks logica Contents Confidential & Proprietary to Logica © June 2001Application-Level Active Networks ALAN Framework (basic – Fry et al)

Mobile Networks logica Contents Confidential & Proprietary to Logica © June 2001Application-Level Active Networks ALAN Framework (enhanced – Pias et al) Added: security module (policy server)

Mobile Networks logica Contents Confidential & Proprietary to Logica © June 2001Application-Level Active Networks Resources /P900-series/P926/P926.htmhttp:// /P900-series/P926/P926.htm(CASPIAN) /project/alanImpl/ccr.html

Mobile Networks logica Contents Confidential & Proprietary to Logica © June 2001Application-Level Active Networks Thank You! Immo Hüneke Technical Architect Wireless Internet Logica Stephenson House 75 Hampstead Road London NW1 2PL United Kingdom direct fax mobile logica