Presence Aware Location-Based Services Presence Aware Location-Based Services For Managing Mobile Communications 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

OverviewOverview 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 WatchersPresentity and Watchers

Bob’s status, location

Watchers

Available, Busy, Somewhat

available, InvisibleInvisible

wife

son

externalworld

PUBLISH SUBSCRIBE

NOTIFY

Bob’sPresentity WatchersWatchers

Bob’s Presence User Agents (PUA)

PC-IM Client

R u there ?

Bob’s play station

Cell

Phone

BUZZ

PUBLISH

Bob’s Filters

(Rules), PIDF *)

PresenceServer(PS)

*) - PIDF = Presence Information Data Format

friend

4

Goals of the ProjectGoals 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?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 SolutionSABIT 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

GPSEVDO

WiFi

VZ Data/Real TimeVZ VPN

Field Tech Laptop-Connect

via WiFi or Ethernet

Components of PALS Components of PALS architecturearchitecture

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)

8

SABIT PALS ArchitectureSABIT PALS Architecture

PUBLISH PresenceServer

NOTIFY

DB

MSC/HLR

SUBSCRIBE Watcher

Watcher

SABIT System

Mobile Employee’s status is relayed through multiple devices

EVDO

GPS

SIP Proxy

Systems View

DB

HTTP/ SIPGateway

HTTP

Location from vehicle

PUBLISH

Media ServerGateway

SABIT Supervisor “sees” mobile employees via the web-interface

9

Advantages of PALSAdvantages 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

MMain Contributions of ain Contributions of PALSPALS 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 ChallengesIssues 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 SABIT PALS Supervisor ApplicationApplication

13

Communications Communications WebpageWebpage

14

ConclusionConclusion 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)