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SEMINAR ON:-TRACKING AND POSITIONING OF MOBILE SYSTEMS IN TELECOMMUNICATION NETWORKS By:                           KARTHIK...
CONTENTS<br />INTRODUCTION TO MOBILE TECHNOLOGY<br />NEED FOR GEOLOCATION <br />ARCHITECTURE OF A GEOLOCATION SYSTEM<br />...
INTRODUCTION TO MOBILE TECHNOLOGY<br />
Contd..<br />the mobile telecommunication network includes a several base stations (BSs) T 1 to T N. <br /> A base station...
NEED FOR GEOLOCATION <br />The geolocation of the mobile user could provide services like <br /> <br /> Emergency service ...
ARCHITECTURE OF A GEOLOCATION SYSTEM<br />
TECHNOLOGIES USED FOR GEOLOCATION <br />1. HANDSET BASED MOBILE POSITIONING AND TRACKING<br />1.1. GLOBAL POSITIONING SYST...
Contd..<br />   2. DIRECTION BASED GEOLOCATION  <br />2.1 ANGLE OF ARRIVAL METHOD <br />
Contd..<br />3. DISTANCE BASED POSITIONING <br />3.1 TIME OF ARRIVAL (TOA)<br />The distance is calculated by the followin...
Contd..<br />3.2. TIME DIFFERENCE OF ARRIVAL (TDOA) <br />  illustrates a typical TOA method for locating a mobile telepho...
Contd..<br />illustrates the TDOA method of locating a mobile telephone.<br />
4.LOCATION TRACKING CURVE METHOD <br />Flowchart showing the steps involved in locating a mobile telephone<br />
Contd..<br />  illustrates a proposed method for mobile telephone location<br />
Determination of the location tracking curve <br />                   illustrates the determination of location tracking c...
Reference circle selection <br />The location data processor compares the selected variances σ, with the preset reference ...
CONCLUSION <br />the location of a mobile telephone can be accurately tracked even in the multi-path fading.<br />accurate...
THANK YOU<br />
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  1. 1. SEMINAR ON:-TRACKING AND POSITIONING OF MOBILE SYSTEMS IN TELECOMMUNICATION NETWORKS By: KARTHIK.S.V (1YD06EC022)<br />
  2. 2. CONTENTS<br />INTRODUCTION TO MOBILE TECHNOLOGY<br />NEED FOR GEOLOCATION <br />ARCHITECTURE OF A GEOLOCATION SYSTEM<br />TECHNOLOGIES USED FOR GEOLOCATION <br /> CONCLUSION <br />
  3. 3. INTRODUCTION TO MOBILE TECHNOLOGY<br />
  4. 4. Contd..<br />the mobile telecommunication network includes a several base stations (BSs) T 1 to T N. <br /> A base station controller (BSC) for controlling the BSs T 1 to T N<br /> Mobile telephone switching office (MTSO) for connecting the BSC to another BTS or a PSTN<br /> The whole service area is divided into a several coverage areas having respective base stations (BS). <br />BS coverage area is called a cell<br />Each BS is provided with a frequency of a range between 450 to900 MHz<br />
  5. 5. NEED FOR GEOLOCATION <br />The geolocation of the mobile user could provide services like <br /> <br /> Emergency service for subscriber safety. <br /> <br /> Location sensitive billing. <br />Cellular Fraud detection. <br /> <br /> Intelligent transport system services. <br /> <br />Efficient and effective network performance and management. <br />
  6. 6. ARCHITECTURE OF A GEOLOCATION SYSTEM<br />
  7. 7. TECHNOLOGIES USED FOR GEOLOCATION <br />1. HANDSET BASED MOBILE POSITIONING AND TRACKING<br />1.1. GLOBAL POSITIONING SYSTEM (GPS) <br />
  8. 8. Contd..<br /> 2. DIRECTION BASED GEOLOCATION  <br />2.1 ANGLE OF ARRIVAL METHOD <br />
  9. 9. Contd..<br />3. DISTANCE BASED POSITIONING <br />3.1 TIME OF ARRIVAL (TOA)<br />The distance is calculated by the following equation, <br />Ri= C τi = sqrt ( (xi – X ) 2 + (yi– Y) 2 ) where, <br />C – Propagation speed of electromagnetic wave, <br />τi– propagation of time from the mobile telephone to ithbase station, <br />Xi, yi -- location of ithbase station, <br />X, Y – mobile position. <br />
  10. 10. Contd..<br />3.2. TIME DIFFERENCE OF ARRIVAL (TDOA) <br /> illustrates a typical TOA method for locating a mobile telephone<br />
  11. 11. Contd..<br />illustrates the TDOA method of locating a mobile telephone.<br />
  12. 12. 4.LOCATION TRACKING CURVE METHOD <br />Flowchart showing the steps involved in locating a mobile telephone<br />
  13. 13. Contd..<br /> illustrates a proposed method for mobile telephone location<br />
  14. 14. Determination of the location tracking curve <br /> illustrates the determination of location tracking curve. <br />
  15. 15. Reference circle selection <br />The location data processor compares the selected variances σ, with the preset reference variances<br /> σ 1, σ 2, and σ 3.<br />If σ <= σ 1, the curve of the first reference circles TR1 is selected.<br />If σ 1 < σ <= σ 2, the curve of the TR2 is selected. <br />If σ 2 < σ <= σ 3, the curve of the TR3 is selected. <br />If σ 3 < σ, the curve of the fourth reference circles TR4 is selected<br />
  16. 16. CONCLUSION <br />the location of a mobile telephone can be accurately tracked even in the multi-path fading.<br />accurate positioning of mobile telephones<br />The important considerations to be undertaken while selecting a location based technology are location accuracy, implementation cost, reliability, increasing functionality. <br />
  17. 17. THANK YOU<br />
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