1. Presence Aware Location-Based Services For Managing Mobile Communications
Vishal K. Singh,
Henning Schulzrinne
Department of Computer Science, Columbia University
Piotr Boni, Boris Elman
and David Kenneson
Verizon Communications

2. Overview Presence-Aware Location-Based Service
Support mobile work force with standards-based location-based services
Integrate location and presence for managing communications to mobile employees
Presence event architecture for fleet management

3. Presentity and Watchers
Bob’s
Presentity
Presence
Server
(PS)
Watchers
SUBSCRIBE
Watchers
Watchers
PUBLISH
NOTIFY
Bob’s status, location
Available, Busy, Somewhat available, Invisible
Bob’s Filters (Rules), PIDF *)
wife
PUBLISH
son
R u there ?
BUZZ
friend
Cell
Phone
PC-IM Client
Bob’s play station
Bob’s Presence User Agents (PUA)
external
world
*) - PIDF = Presence Information Data Format

4. *) - Verizon Service Assurance Business Intelligence Toolkit
Goals of the Project
Presence architecture to develop advanced services
Combine vehicle’s location and user’s presence for managing mobile communications
Generalize the event-driven data ( e.g., from a vehicle) and entity association procedures (vehicle  person)
Verify the approach on the existing, deployed system: Verizon SABIT *)
*) - Verizon Service Assurance Business Intelligence Toolkit

5. What is SABIT PALS?
SABIT is a web-based mobile employee productivity management system
PALS - Presence-Aware Location-Based Service
Advanced communication services based on aggregation of presence information
Enhanced vehicle management system
A service, where presence/availability information of a user is combined with the location information (of the vehicle) to achieve an integrated communication environment

6. SABIT PALS Solution Integrates:
Status and diagnostic information of the vehicle
Mobile employee’s location data obtained from a GPS device in a vehicle
Mobile employee’s presence information data obtained from his/her cell-phone
Laptop-based IM/VoIP soft client

7. Components of PALS architecture
Integrated In-Vehicle Device (IIVD – Vehicle Events)
SABIT System
HTTP-SIP Gateway (LBS Presence User Agent)
Media Server
Watcher or Supervisor Application
Presence Server (PS)
GPS
EVDO
WiFi
VZ Data/Real Time
VZ VPN
Field Tech Laptop-Connect via WiFi or Ethernet

8. SABIT PALS ArchitectureDB DB
Location from vehicle
GPS
SABIT
System
EVDO
Watcher
SUBSCRIBE
Presence
Server
HTTP/ SIP
Gateway
PUBLISH
Watcher
HTTP
NOTIFY
Media Server
Gateway
MSC/HLR
PUBLISH
SIP Proxy
SABIT Supervisor “sees” mobile employees via the web-interface
Mobile Employee’s status is relayed through multiple devices
Systems View

9. Advantages of PALS Improved monitoring
Management knows the mobile workforce status in real-time
Easy, ad-hoc and/or planned communications
Cross-domain reach: PSTN, wireless, VoIP, IM
Multi-modal exchanges
Rendezvous calls triggered by different conditions and events: being available, reaching certain landmark, vehicle stop or movement
Notifications based on mobile employee status
Better task dispatching
Increased efficiency

10. Main Contributions of PALS
Aggregating presence information from multiple sources
User’s presence information is aggregated from mobile employee’s cell-phone and his/her IM client or soft-phone (laptop)
Deriving user location from vehicle’s location
Cross domain derivation of presence information
Deriving presence information of a user from location information of a vehicle which is a different entity; assumes entity association:
user   vehicle
Vehicle as an entity in a presence system
Extending the PIDF schema to update the vehicle’s location and health information to the presence server
Identifying need for defining a new SIP event-package for managing vehicles (health info based on OBD-II standard)
Enabling advanced service creation
Dispatching or redirecting crews based on their location and availability

11. Issues and Challenges Interoperability
IIVD box has a proprietary interface; standards-based approach is recommended
Microsoft’s LCS used as PS does not interoperate with standard SIP-based presence servers (Columbia Presence Server)
Data model for vehicle tracking system
Vehicle as a managed presentity
User as a managed presentity
PIDF schema extension
Location object
Vehicle Info object
Associating entities
Vehicle presentity to user presentity association
Vehicle’s ID and user’s URI association in SABIT PALS
Can be dynamic and cross-domain (e.g., car rental co. and person renting a car)

12. SABIT PALS Supervisor Application

13. Communications Webpage

14. Conclusion
SABIT PALS has a great potential of improving employee efficiency
Presence event architecture can be used to develop services for both consumer (residential) and an enterprise scenarios
E911, rental car management, delivery companies (Fedex)
Unification of vehicle location tracking with the core communication services - via Presence - allows building advanced domain-specific services
Vehicle status monitoring, automatic communication setup based on triggers, Automated Route Planning
A need for new SIP event package for managing vehicles
A need for entity association mechanism (e.g., vehicle  person)