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

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

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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,

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Location Services Based on Location Services Based on Cellular Networks Cellular Networks

Mikko Voipio Next Generation Wireless Networks November 31, 2005

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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

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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

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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

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Location Service System Architecture Location Service System Architecture

LCS Client GMLC Base Station MLP

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Mobile Location Protocol Mobile Location Protocol

Service layer SLIS, ELIS, TLRS Element layer Transport layer HTTP,WSP,SOAP

Core Location Elements Transport Layer Common Elements SLIS ... ELIS TLRS

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Third Party Search Third Party Search

LCS Client GMLC Base Station

Location Measurement Request LCS Client Authentication Mobile User Privacy Check Location Measurement Request Location Measurement Location measurement result

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User Location Notification User Location Notification

LCS Client GMLC Base Station

Location Measurement Request Location Measurement

Location Measurement Result Location Measurement Result(!) LCS Client Authentication

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Location Service System Architecture Location Service System Architecture (DoCoMo) (DoCoMo)

Cellular Network GMLC Base Station Internet Application Systems DLP Center

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Assisted GPS (A Assisted GPS (A-

  • GPS)

GPS)

Cellular Network Assistance Server GPS Data (Impaired)GPS Data Assistance Data

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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

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Billing Issues Billing Issues

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

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Practical Services: Emergency Practical Services: Emergency

US 911 Local regulation 112 in EU Safety Benefon Safetyphone Employee protection

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Practical Services: Practical Services: Location based info Location based info -

  • Pull

Pull

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

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Practical Services: Practical Services: Location Based Information Location Based Information -

  • Push

Push

Safety alerts Traffic alerts Weather alerts Reminders Advertisements Legal/moral aspects

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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

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

Conclusions Conclusions

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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