444 - Cellular Networks Mobility Mobile IP Cellular...

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Cellular Networks Mobility Mobile IP Cellular Mobility Take-Home Points Mobility in Wireless Networks Mobile IP and Cellular Networks Daniel Zappala Brigham Young University Computer Science Department Mobility in Wireless Networks Daniel Zappala 1/22
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Cellular Networks Mobility Mobile IP Cellular Mobility Take-Home Points 1 Cellular Networks 2 Mobility 3 Mobile IP 4 Cellular Mobility 5 Take-Home Points Mobility in Wireless Networks Daniel Zappala 2/22
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Cellular Networks Mobility Mobile IP Cellular Mobility Take-Home Points Questions of the Day How do Cellular networks work? How can a mobile user remain connected to the Internet? Mobility in Wireless Networks Daniel Zappala 3/22
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Cellular Networks Mobility Mobile IP Cellular Mobility Take-Home Points Cellular Networks cell geographical region covered by a cell tower CDMA or combined FDMA/TDMA - divide spectrum into frequency channels, divide each channel into time slots mobile switching center connects cellular network to telephone network and Internet call setup mobility between cells and switches Mobility in Wireless Networks Daniel Zappala 4/22
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Cellular Networks Mobility Mobile IP Cellular Mobility Take-Home Points Cellular Standards 2G systems: digital voice GSM - FDMA/TDMA, most widely deployed, 200 countries, a billion people IS-95 - first CDMA-based cellular standard, developed by Qualcomm IDEN - TDMA, Nextel, merged with Sprint, being phased out for CDMA2000 IS-136 - uses FDMA/TDMA, North America, Cingular and US Wireless, being phased out for GSM, CDMA2000 2.5G systems: voice and data channels GPRS - evolved from GSM, packet-switched, 170 kbps (30-70 in practice) CDMA2000 1xRTT - evolved from IS-95, 144 kbps Mobility in Wireless Networks Daniel Zappala 5/22
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Cellular Networks Mobility Mobile IP Cellular Mobility Take-Home Points Cellular Standards 2.75G - almost 3G in speed EDGE - another enhancement of GSM, 384 kbps, 2.75G 3G: voice (circuit-switched) and data (packet-switched) UMTS - W-CDMA, successor to GSM networks, 384 kbps - 2 Mbps, European, some Japan, Cingular in U.S.
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444 - Cellular Networks Mobility Mobile IP Cellular...

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