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Virtual PalmTop - A Thin Client Classmark Clarifications Main features of the RFC Questions Raised and Answers Moving Towards a new Classmark Copyright.

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Presentation on theme: "Virtual PalmTop - A Thin Client Classmark Clarifications Main features of the RFC Questions Raised and Answers Moving Towards a new Classmark Copyright."— Presentation transcript:

1 Virtual PalmTop - A Thin Client Classmark Clarifications Main features of the RFC Questions Raised and Answers Moving Towards a new Classmark Copyright © Media Farm, Inc. All Rights Reserved.

2 The Goals of the VP Classmark n Target “well connected, audio visually enabled (thin client) devices with enhanced display but with limited processing and memory requirements” n Server Side support for concurrently running large apps with reconnection n Support for large class of apps, content n Reestablish state on handset - Support for VHE n AV support - Multimedia & Multimodal Systems n Compelling (server supported) next gen. UI Copyright © Media Farm, Inc. All Rights Reserved.

3 VP Client Devices n Meant to run on a Wide Array of general and special purpose handsets n Meant to support a broad range of Applications n 512K to 16MB or more Memory n 20 to 100 Mhz or more CPU n Long Battery Life, time between charges n A range of profiles to be created n Graphical, Speech, AV capabilities n Easy to Implement, Easy to Enable and easy to provision new services n PDA, SmartPhone, Games, MP3, Video, Browsing, Readers, e-Wallet, Car Nav. Copyright © Media Farm, Inc. All Rights Reserved.

4 Handset and BandWidth Econonmics n $50 - $300 handset cost for manufacturer(VP) n $100 - $600 street prize for handsets(VP) n 50 to 200 Mbytes/month per User(Qualcomm) n Wireline -1 MB/month early 90s, 196 MB in ‘99 n $4 - $14/month (for 200 MB) for WS Operator for CDMA xEV(0.02c/MB to 0.07c/MB) n “As resolution and screen sizes improve and color replaces black and white, applications and content will incorporate more graphics and multimedia features, thereby driving higher bandwidth demand” n Moral - Ease and cost of provisioning new applications is the key to 3G’s success

5 Various Protocols, Formats and Interactions n Variant of ONC RPC - security uses GSS API n Graphics Protocol n Event System Protocol n ALM Protocol (with DHCP for bootstrap) n Telephony and Speech Support n Speech Formats n AV and Multimedia Support n Virtual File Store for Content Mgmt. Copyright © Media Farm, Inc. All Rights Reserved.

6 RPC and Security n Variant of ONC RPC altered for Wireless n Simple RPC that can be implemented in less than 50K n Source Code and tools freely available n Several Security flavors created n Security through GSS-API n LIPKEY is an option n Detailed spec. for security in sister RFC Copyright © Media Farm, Inc. All Rights Reserved.

7 Features of Graphics Protocol n Graphics and Event System Initialization n Drawing, Fonts, Images n Widgets, Visual Objects n TTS, ClickToVoice n Notifications n Compound Requests, OnAction Ops. n Caching of Drawable Actions and Recreation of State, offline browsing Copyright © Media Farm, Inc. All Rights Reserved.

8 Event System Protocol n Event System Negotiation n Event Delivery n Speech Input Delivery n Reconnect Handling n State Transition Handling n Speech Server Connections n Event System can be agented Copyright © Media Farm, Inc. All Rights Reserved.

9 ALM Protocol n BootStrapped using DHCP n Uses HLR, VLR to retrieve user state n GetCurrent Application n Launch Application Manager UI n Find Current Applications n Find Current Program Lists & Programs n Find Available Servers to run programs n Get Security information n ALM UI handles application mgmt Copyright © Media Farm, Inc. All Rights Reserved.

10 Telephony & Speech Support n Support for Inband Speech Delivery using Deliver Next Event n Speech Support using RTSP/SIP n Support through the Voice Channel n Support for TTS, Raw Speech n ClickToVoice Support n MultiRate Speech Support n Notifications to support async alerts Copyright © Media Farm, Inc. All Rights Reserved.

11 Speech Formats n Several Formats - input from other members on requirements n Raw Speech n ADPCM n RPE-LTP for GSM networks n AMR n Cepstral Format from Sphinx Copyright © Media Farm, Inc. All Rights Reserved.

12 AV and Multimedia Support n Support for mediation of stream as applications run on the server n Stream can be converted n Stream can be selectively filtered n DMIF and possibly MPEG-J support n MMS support by running UA and Relay on server + Notifications n VFS to enable content mgmt, browsing Copyright © Media Farm, Inc. All Rights Reserved.

13 Virtual File Store n User has private, public space on server n Can browse using a visual File Browser n Alternatively can use native access through NFS V4 n Store and retrieve MMS data n Store and Retrieve Applications n Transfer applications to run on handset in Multiclassmark capable devices Copyright © Media Farm, Inc. All Rights Reserved.

14 Q & A n Q: Why new Classmark? n A: Quite different from other classmarks; broad support for other classmarks, multiple simultaneous applications, reestablishment of state, etc. It operates one layer below existing classmarks. Intended to run Native in a small kernel with broad support for Speech and Multimedia. Running over VMs with UI support might be possible for limited versions but wasteful in resources and will not exploit all OS and system features. Morever none of the existing classmarks support the various speech and multimedia features (Not good to use Java to run X Terminals) Copyright © Media Farm, Inc. All Rights Reserved.

15 Q & A n Q: How does security work? n A: Security authenticates and encrypts the connection using possibly GSSAPi, LIPKEY n Q: Use Case for Multimodal Application n A: Bank Application with deictic help - user dialog as input except for account password - user touches display and says, “What is this?”. System replies“This is the old savings account” n Conversa browser and the W3C efforts are references - early research projects include XTRA, SCHOLAR, DIS-QUE Copyright © Media Farm, Inc. All Rights Reserved.

16 Q & A n Q: Question about Data Traffic n A: Specification provides several levels of feature implementation - Depends on the level of feature support on handset and server and the nature of the application - data traffic can be lower or slightly higher based on the application, the usage pattern etc. n Q: Question about Multimedia Support n A: Multimedia support is optional - entirely depends on the handset - VP is intended to target a broad range of apps. and handsets Copyright © Media Farm, Inc. All Rights Reserved.

17 Moving Towards a New Classmark n Feature Input - additional recommendations n Profile Definitions n How to better support MMS and Multimodal and VHE n Inputs and Comments on the RFC n Simple and Rapid Server side standards n Support from Service Providers and UE manufacturers Copyright © Media Farm, Inc. All Rights Reserved.

18 Next Steps n Reference Implementations n Initial Demo. at subsequent MExE Meetings n Like to freeze spec. in 6 months to allow UE makers time to implement n Deployment and Licensing issues n Branding for proliferation Copyright © Media Farm, Inc. All Rights Reserved.


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