extending instant messaging to provide pervasive personal communication wei li, fredrik kilander and...
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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 SciencesStockholm University/Swedish Royal Institute of Technology
Orange County, California, September 17 FUMCA 2006
2 FUMCA 2006
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
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
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
A Personal Communication System Architecture
6 FUMCA 2006
Peer-to-Peer Buddy Network
7 FUMCA 2006
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
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
Location Enhanced Presence Seen by Buddies from Different IM Networks
10 FUMCA 2006
Map Enhanced User Location Presence
(b) Map with Multimap.com(a) Google Satellite MapText: My Home! (extra 4 map links)Comviq Cells: 16618, 16619
11 FUMCA 2006
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
Thanks & Questions?