Location Services Based on Location Services Based on Cellular - PowerPoint PPT Presentation

Location Services Based on Location Services Based on Cellular Networks Cellular Networks Mikko Voipio Next Generation Wireless Networks November 31, 2005

Background Background � A lot of information is location based � Location is, indeed, four dimensional (x, y, (z), t) vector � Different services requires different granularity � Location can be used e.g.: � Filter � Pointer � Trigger

LBS Architecture Types LBS Architecture Types � User Plane LBS � The phone calculates position � Utilizes Packed Switched Network � Requires handset with extra capability � Control Plane LBS � Network locates the phone � Utilizes Circuit Switched Network � Supports all handsets � Suitable for Emergency Call support

Standardization Standardization � OMA SUPL � Secure User Plane Location � SUPL Location Platform (SLP) � SUPL Enabled Terminal (SET) � 3GPP Control Plane Specification � TIA/3GPP2 IP Based User Plane Specification � Effort align with OMA � Service in line with legacy service drivers

Location Service System Architecture Location Service System Architecture LCS Client MLP Base Station GMLC

Mobile Location Protocol Mobile Location Protocol ... SLIS ELIS TLRS � Service layer Common Elements � SLIS, ELIS, TLRS � Element layer Core Location Elements � Transport layer Transport Layer � HTTP,WSP,SOAP

Third Party Search Third Party Search Location LCS Client Measurement Location measurement result LCS Client Authentication Mobile User Location Privacy Check Location Measurement Measurement Request Request Base Station GMLC

User Location Notification User Location Notification Location Measurement Request LCS Client Location LCS Client Measurement Authentication Location Measurement Result Location Base Station Measurement Result(!) GMLC

Location Service System Architecture Location Service System Architecture (DoCoMo) (DoCoMo) Base Station Cellular DLP Center Internet Network Application GMLC Systems

Assisted GPS (A- -GPS) GPS) Assisted GPS (A (Impaired)GPS Data GPS Data Assistance Data Assistance Server Cellular Network

Legal and Ethical Aspects Legal and Ethical Aspects � Who is allowed to know your location? � In Finland the person tracked should give his/her permission � Who is allowed to send you a message based on your location (Push advertisments)? � In general: Service provider knows the target

Billing Issues Billing Issues � QoS � Tracking vs Single request � The service used � Roaming � Visited Network's Operator � Service Provider � Home Network Operator

Practical Services: Emergency Practical Services: Emergency � US 911 � Local regulation � 112 in EU � Safety � Benefon Safetyphone � Employee protection

Practical Services: Practical Services: Location based info - - Pull Pull Location based info � Presence enhanced phone directory � Call diversion (taxi, pizzeria...) � City guiding/Navigation � Fontus mobileguide � Shopping � Weather forecast � FMI mobiilisää � NTT DoCoMo iArea Courtesy of Finnish Meteorological Institute

Practical Services: Practical Services: Location Based Information - - Push Push Location Based Information � Safety alerts � Traffic alerts � Weather alerts � Reminders � Advertisements � Legal/moral aspects

Practical Services: Tracking Practical Services: Tracking � Lost/stolen property � Pointer Dog-GPS � Vehicle/Work Force Tracking � Improved utilization � Friends (location sharing) Courtesy of Pointer Oy

Conclusions Conclusions � LBS contains a lot of opportunities � Different technologies used � Two basic approach in cellular networks � Privacy is an issue

References References Dixit, Wu: Content Networking in the Mobile Internet � GSM Association: Permanent reference Document SE.23 Version 3.1.0 � NTT DoCoMo iArea http://www.nttdocomo.com/corebiz/services/imode/iarea.html � Fontus Oy, URL: http://www.fontus.com � Pointer Oy URL: http://www.pointersolutions.com � Finnish meteorological Institute: URL: http//www.fmi.fi/mobiilisää � Helsinki Testbed Mobile Data Product: http://testbed.fmi.fi/Misc/Mobile_product_info.html � LBS Zone http://www.lbszone.com � Younge, M.L: High Interest Subject: Location Based Services, Global Standards Collaboration #10, Sophia � Antipolis, 2005