1. Extending Instant Messaging to Provide Pervasive Personal Communication Wei Li, Fredrik Kilander and Carl Gustaf Jansson {liwei, fk, calle}@dsv.su.se Department of Computer and Systems Sciences Stockholm University/Swedish Royal Institute of Technology Orange County, California, September 17 FUMCA 2006

2. 2 The Evolution of Internet-based Personal Communication E-mail (convenient and economical) Instant Messaging (IM)  Real-time communication  User status presentation (auto-captured presence)  Lively emotion expression (Smileys)  Animation, audio and video features  More functions are expected, e.g., interfacing home appliances, E-Business etc. IM will probably become an dominant feature for future personal communication.

3. FUMCA 2006 3 Problems with the Existing IM Systems Interoperability Mobility Support  Singular online instance (per account)  No adaptation support Changing bandwidth (e.g., presence with no messages) Privacy and Security  IM server can know everything (comm. address, parties and even the content). Other problems  NAT  Breakdowns  …

4. FUMCA 2006 4 Rethink the IM Services Main Purpose: to stay in contact with family members, friends and colleagues. The main tasks of IM Servers:  A directory service  User authentication  Address resolution  Messaging routing No need to be dependent on a 3rd party server as all other works are handled by the user’s computers already. A user controllable server is a better solution (similar to hosting a personal web server).

5. FUMCA 2006 5 A Personal Communication System Architecture

6. FUMCA 2006 6 Peer-to-Peer Buddy Network

7. FUMCA 2006 7 Constructing the Personal Communication System SIP & SIMPLE based communication PCS (an extended SIP proxy using NIST JAIN-SIP) Various SIP clients can be used as client applications PCS also acts as a bridge to different IM networks

8. FUMCA 2006 8 PCS Implementation Problems Solving related to SIP  Interoperability  NAT Traverse  Media Format Compatibility Providing Value-added Features  Transparent Cross-Network Access  Location Enhanced User Presence  Communication Delegation  Pervasive Contact to Buddies Other Useful Features  Remote Monitoring  Combining Different Clients

9. FUMCA 2006 9 Location Enhanced Presence Seen by Buddies from Different IM Networks

10. FUMCA 2006 10 Map Enhanced User Location Presence (b) Map with Multimap.com (a) Google Satellite Map Text: My Home! (extra 4 map links) Comviq Cells: 16618, 16619

11. FUMCA 2006 11 Conclusion and Future Work Future mobile computing applications can be integrated into IM-based personal communication systems  Open standard should be used  User should have full control of his/her personal information as well as the communication. Future Work  Enable context-awareness  Performance evaluation mobile settings  Resource consumption concerns  Adaptive context acquisition, communication

12. FUMCA 2006 12 Thanks & Questions?