Cellular technologies and security.

1. Cellular technologies and security G.V. Nilanka 080321G Department of Electrical Engineering 1

2. Outline……… Evolution of Mobile Communication What is Cellular technology ? What is a cell? What is a cell site? What is a channel? Basic operation in cellular What are new cellular features? What are security facts? Protecting your phone 2

3. Evolution of Mobile Communication Cellular mobile communication system has gone through 3 stages: 1. First Generation -Analog Mobile Telephone System 2. Second Generation-Digital Mobile Communication System (1990) 3. Third Generation -2000 3

5. type of two-way radio.

6. original 2-way-radio cell towers were at the centers of the cells

7. mobile phone network4

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 users less transmission power needed base station deals with interference, transmission area Cell is a service area covered by some BTS. 6

12. 8 Cell Distribution in a Network Rural Highway Town Suburb

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 channel Voice channel 9

14. Basic operation Each cell site has a base station with a computerized 800 or 1900 MHz transceiver and an antenna. 1-10 km in radius The area size depends on Topography Population Traffic 10

15. Basic operation 11 A

16. Basic operation BTS -Base Transceiver Station It is the radio tranmission part of the base station system. Controlled by BSC BSC -Base Station Controller the control part of BSC performs the switching function in BSC MSC-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 operation VLR – 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 areas 13

18. New trends in cellular phones Video call GPS Wi-Fi TV phone Office software Satellite phones 14

19. What are security facts? Phone lock GPS Bluetooth hacker Cell phone viruses 15

20. Cell phone viruses The first known cell phone virus appeared in 2004. How viruses spread Internet download Bluetooth wireless connection MMS 16

21. Protecting your phone Turn off Bluetooth discoverable mode. Should know about virus name . Install the some security software for your phone. 17

22. THANK YOU 18

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