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Cellular technologies and securityG.V.  Nilanka080321GDepartment of Electrical Engineering 1
Outline………Evolution of Mobile CommunicationWhat is Cellular  technology ?What is a cell?What is a cell site?What is  a channel?Basic operation in cellularWhat are new  cellular features?What  are security facts?Protecting  your  phone2
Evolution of Mobile CommunicationCellular mobile communicationsystem  has gone through 3 stages: 1. First Generation -Analog Mobile Telephone System 2. Second Generation-Digital Mobile Communication System (1990)3. Third Generation -20003
What is Cellular technology ?network made up of a number of cells.
type of two-way radio.
original 2-way-radio cell towers were at the centers of the  cells
mobile phone network4
What is a cell?  The geographical area covered by cellular radio         antennas. These areas are called cells.
  we want to depict an area totally covered by radio, without any gaps.5
What is a cell   ?Advantages of hexagon cell structures:higher capacity, higher number of usersless transmission power neededbase station deals with interference, transmission area Cell is a service area covered by some BTS.6
What is a cell site?The middle circles represent cell sites.Cell site7
8Cell Distribution in a NetworkRuralHighwayTownSuburb
What is a channel?cell phones and base stations transmit or communicate with each other on dedicated paired frequencies called channels. Use 4 antennas per one cell.There are main two channels.Control channelVoice channel9
Basic operationEach cell site has a base station with a computerized 800 or 1900 MHz transceiver  and an antenna.1-10 km in radiusThe area size depends onTopographyPopulationTraffic10
Basic operation11A
Basic operationBTS -Base Transceiver Station It is the radio tranmission part of the base station system. Controlled by BSCBSC -Base Station Controller    the control part of BSC performs the switching function in BSCMSC-Mobile Services Switching Center   obtains all the data for processing subscriber call requests from 3 types of databases (HLR, VLR and AUC). 12
Basic operationVLR – Visitor Location Register   stores all related information of mobile subscribers having entering into its coverage area.HLR  -Home Location Register    stores the related data of all existing mobile subscribers controlled by the same HLR. One HLR can control several mobile switching areas13
 New trends in cellular phonesVideo callGPSWi-FiTV phoneOffice softwareSatellite phones14
What  are security facts?Phone lockGPSBluetooth hackerCell phone viruses15

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Cellular technologies and security

  • 1. Cellular technologies and securityG.V. Nilanka080321GDepartment of Electrical Engineering 1
  • 2. Outline………Evolution of Mobile CommunicationWhat is Cellular technology ?What is a cell?What is a cell site?What is a channel?Basic operation in cellularWhat are new cellular features?What are security facts?Protecting your phone2
  • 3. Evolution of Mobile CommunicationCellular mobile communicationsystem has gone through 3 stages: 1. First Generation -Analog Mobile Telephone System 2. Second Generation-Digital Mobile Communication System (1990)3. Third Generation -20003
  • 4. What is Cellular technology ?network made up of a number of cells.
  • 6. original 2-way-radio cell towers were at the centers of the cells
  • 8. What is a cell? The geographical area covered by cellular radio antennas. These areas are called cells.
  • 9. we want to depict an area totally covered by radio, without any gaps.5
  • 10. What is a cell ?Advantages of hexagon cell structures:higher capacity, higher number of usersless transmission power neededbase station deals with interference, transmission area Cell is a service area covered by some BTS.6
  • 11. What is a cell site?The middle circles represent cell sites.Cell site7
  • 12. 8Cell Distribution in a NetworkRuralHighwayTownSuburb
  • 13. What is a channel?cell phones and base stations transmit or communicate with each other on dedicated paired frequencies called channels. Use 4 antennas per one cell.There are main two channels.Control channelVoice channel9
  • 14. Basic operationEach cell site has a base station with a computerized 800 or 1900 MHz transceiver and an antenna.1-10 km in radiusThe area size depends onTopographyPopulationTraffic10
  • 16. Basic operationBTS -Base Transceiver Station It is the radio tranmission part of the base station system. Controlled by BSCBSC -Base Station Controller the control part of BSC performs the switching function in BSCMSC-Mobile Services Switching Center obtains all the data for processing subscriber call requests from 3 types of databases (HLR, VLR and AUC). 12
  • 17. Basic operationVLR – Visitor Location Register stores all related information of mobile subscribers having entering into its coverage area.HLR -Home Location Register stores the related data of all existing mobile subscribers controlled by the same HLR. One HLR can control several mobile switching areas13
  • 18. New trends in cellular phonesVideo callGPSWi-FiTV phoneOffice softwareSatellite phones14
  • 19. What are security facts?Phone lockGPSBluetooth hackerCell phone viruses15
  • 20. Cell phone virusesThe first known cell phone virus appeared in 2004.How viruses spreadInternet downloadBluetooth wireless connectionMMS16
  • 21. Protecting your phoneTurn off Bluetooth discoverable mode.Should know about virus name .Install the some security software for your phone.17
  • 23. 19