Location based System for
mobile GSM devices
Using services from the PATS-Lab
Program for advanced telecom services
Overview
Objectives
► Explore
the technology
► What have been done in the past
► Implement a Location Based system
► Look at articles on the subject (context
aware, location, mobile)
► What are the possibilities
Exploring the technology
► How
is GSM positioning done
► How accurate is it
► Pros and contras
► How to combine telecom network with ip
► Different API’s
► Map data
► Automatic Call setup based on context
What have been done?
► Lots
of interesting services have been
developed
► AMIGOS, Sheep Location, Children Guard,
Rental Service, Emergency Alarm…..
Implement a Location based system
► Develop
a system in Java
► Experiment with services
► Object tracker, for instance: Locate your lost
dog, Get an alarm when your son is down
town at 03.00 Saturday night, or not if his
older brother is there too
► Explore the Parlay (x) API
One simple idea
Sd getLocation
Gøran:ServiceUser
:SMS_Handler
:Controller
:POS_Server
Where is(”Line”,pNr)
Locate(”Line”,pNr)
getStaticID(”Line”, pNr)
alt
staticID(”Line”,pnr,staticID)
getLocation(staticID)
Location(l,b,staticID)
sendLocation(”Line”,b,l)
Msg(”Line is at N591402,L130434
notRegisteredinSystem(”Line”)
sendErrorMsg(”InvalidObject”)
Msg(”Invalid Object: Line”)
:TrackObjects
Context Aware Traffic News
Fig: ActorFrame Developers guide, G.Melby
Questions?
Articles
►Context-Aware
Communication
►Wearable Computing Meets
Ubiquitous Computing
Context-Aware Communication
►
►
►
How the changing information about an
individual’s location, environment and
social situation can be used to initiate and
facilitate people’s interactions with one
another.
Autonomy regarding: Context sensing and
Communication action
Design issues
Context-Aware Communication
► Applications
examines and react to a user’ s
changing context in order to help promote
and mediate people’s interactions with each
other and their environment
► Applications that apply knowledge of
people’s context to reduce communication
barriers
► Subset of context-aware computing
► The line is not always clear
Context-Aware Communication
Not obvious that application designers should simultaneously
try to maximize autonomy in both dimensions since this
removes human common sense. (Tom Erickson: At best
awfully hard to implement)
Looks at five different applications, organized functionally:
Routing, addressing, messaging, providing caller awareness
and screening
Receptionist assistant and Ether-phone
Context-Aware Communication
► Improving
relevance
► Minimizing disruption
► Improving awareness
► Reducing overload
► Selecting channels
Wearable Computing Meets
Ubiquitous Computing
► Two
different paradigms
► Wearable: Problems with localized
information, resource control and resource
management between multiple people
► Ubiquitous: Problems with privacy and
personalization
► Solution: Peer-to-peer network, mix of the
two. HIVE distributed agent architecture
Wearable Computing Meets
Ubiquitous Computing
Ubiquitous computing in the purest form, all computation is
contained in the environment
Privacy risk: Potential leak from systems
Personalized information: Worst case, every time a person joins a work-group
Profile must be added to every device
Wearable computing, all computation is handled by the
wearable
Localized information: Maintaining information
Localized control: More CPU power, network demands, needs code to control
devices
Resource management: Wants more intelligent system than simply allowing
the last request
Wearable Computing Meets
Ubiquitous Computing
► Automatic
diary (PR)
► Proximate Selection of Big Screen Display
(PR,LR)
► Theme Music (PR,PE,LR)
► DJ (PR,PE,LR,RM)
► Remembrance Agent (PR,PE,LI)
► Context-aware alert filtering (PR,PE,LI)
► “Where’s Brad?” (PR,PE,LR)
Discussion?