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Cellular technologies and security


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Cellular technologies and security.

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Cellular technologies and security

  1. 1. Cellular technologies and security<br />G.V. Nilanka<br />080321G<br />Department of Electrical Engineering <br />1<br />
  2. 2. Outline………<br />Evolution of Mobile Communication<br />What is Cellular technology ?<br />What is a cell?<br />What is a cell site?<br />What is a channel?<br />Basic operation in cellular<br />What are new cellular features?<br />What are security facts?<br />Protecting your phone<br />2<br />
  3. 3. Evolution of Mobile Communication<br />Cellular mobile communication<br />system has gone through 3 stages: <br />1. First Generation -Analog Mobile Telephone System <br />2. Second Generation-Digital Mobile Communication System (1990)<br />3. Third Generation -2000<br />3<br />
  4. 4. What is Cellular technology ?<br /><ul><li>network made up of a number of cells.
  5. 5. type of two-way radio.
  6. 6. original 2-way-radio cell towers were at the centers of the cells
  7. 7. mobile phone network</li></ul>4<br />
  8. 8. What is a cell?<br /><ul><li> The geographical area covered by cellular radio antennas. These areas are called cells.
  9. 9. we want to depict an area totally covered by radio, without any gaps.</li></ul>5<br />
  10. 10. What is a cell ?<br />Advantages of hexagon cell structures:<br />higher capacity, higher number of users<br />less transmission power needed<br />base station deals with interference, transmission area <br />Cell is a service area covered by some BTS.<br />6<br />
  11. 11. What is a cell site?<br /><ul><li>The middle circles represent cell sites.</li></ul>Cell site<br />7<br />
  12. 12. 8<br />Cell Distribution in a Network<br />Rural<br />Highway<br />Town<br />Suburb<br />
  13. 13. What is a channel?<br />cell phones and base stations transmit or communicate with each other on dedicated paired frequencies called channels.<br /> Use 4 antennas per one cell.<br />There are main two channels.<br />Control channel<br />Voice channel<br />9<br />
  14. 14. Basic operation<br />Each cell site has a base station with a computerized 800 or 1900 MHz transceiver and an antenna.<br />1-10 km in radius<br />The area size depends on<br />Topography<br />Population<br />Traffic<br />10<br />
  15. 15. Basic operation<br />11<br />A<br />
  16. 16. Basic operation<br />BTS -Base Transceiver Station <br />It is the radio tranmission part of the base station system. Controlled by BSC<br />BSC -Base Station Controller<br /> the control part of BSC performs the switching function in BSC<br />MSC-Mobile Services Switching Center<br /> obtains all the data for processing subscriber call requests from 3 types of databases (HLR, VLR and AUC). <br />12<br />
  17. 17. Basic operation<br />VLR – Visitor Location Register<br /> stores all related information of mobile subscribers having entering into its coverage area.<br />HLR -Home Location Register<br /> stores the related data of all existing mobile subscribers controlled by the same HLR. One HLR can control several mobile switching areas<br />13<br />
  18. 18. New trends in cellular phones<br />Video call<br />GPS<br />Wi-Fi<br />TV phone<br />Office software<br />Satellite phones<br />14<br />
  19. 19. What are security facts?<br />Phone lock<br />GPS<br />Bluetooth hacker<br />Cell phone viruses<br />15<br />
  20. 20. Cell phone viruses<br />The first known cell phone virus appeared in 2004.<br />How viruses spread<br />Internet download<br />Bluetooth wireless connection<br />MMS<br />16<br />
  21. 21. Protecting your phone<br />Turn off Bluetooth discoverable mode.<br />Should know about virus name .<br />Install the some security software for your phone.<br />17<br />
  22. 22. THANK YOU<br />18<br />
  23. 23. 19<br />