Challenge 4: Portability Limited battery power Limited processing, display and storage PDA phone data Laptop Sensors simpler graphical displays fully functional embedded ·802.11/3G standard applications controllers battery 802.11 Mobile phones voice. data ° simple graphical displays ·GSM3G 2021 Performance/Weight/Power Consumption
Challenge 4: Portability ß Limited battery power ß Limited processing, display and storage 2021-1-29 21 Sensors, embedded controllers Mobile phones • voice, data • simple graphical displays • GSM/3G PDA phone • data • simpler graphical displays • 802.11/3G Laptop • fully functional • standard applications • battery; 802.11
Challenge 5: Regulation and Multiple Communication standards cellular phones satellites wireless phones LAN 1980 CTO T450 1982 1983: Inmarsat AMPS A 1984 CT1 NMT 900 1987 CT1 Inmarsat 1989 CT2 1991:1991 199 1992: CDMA D-AMPS 1992 DECT GSM 1993 Inmarsat-B proprietary PDC Inmarsat-M DCS 18Q 1998 EEE802.11 Iridium 1999 802. 11b. Bluetooth 2000 analogue GPRS\\ 2001 EEE802.11a MT2000 digital Generatior 2021-129 22(Internet based)
Challenge 5: Regulation and Multiple Communication Standards 2021-1-29 22 cellular phones satellites wireless LAN cordless phones 1992: GSM 1994: DCS 1800 2001: IMT-2000 1987: CT1+ 1982: Inmarsat- A 1992: Inmarsat-B Inmarsat-M 1998: Iridium 1989: CT 2 1991: DECT 199x: proprietary 1997: IEEE 802.11 1999: 802.11b, Bluetooth 1988: Inmarsat- C analogue digital 1991: D-AMPS 1991: CDMA 1981: NMT 450 1986: NMT 900 1980: CT0 1984: CT1 1983: AMPS 1993: PDC 2000: GPRS 2000: IEEE 802.11a Fourth Generation (Internet based)
Todays Lecture Introduction and challenges Internet Mobility IPv6 Mobility Support Ad hoc Network Mobile system Framework Rethinking about Mobility Reading List 2021-129 23
Today’s Lecture ß Introduction and Challenges ß Internet Mobility ß IPv6 Mobility Support ß Ad hoc Network ß Mobile System Framework ß Rethinking about Mobility ß Reading List 2021-1-29 23
Routing to Mobile Nodes obvious solution have mobile nodes advertise route to mobile address/ 32 k should work!!! Why is this bad? Consider forwarding tables on backbone routers Would have an entry for each mobile host Not very scalable What are some possible solutions? 2021-129
Routing to Mobile Nodes ß Obvious solution: have mobile nodes advertise route to mobile address/32 Þ Should work!!! ß Why is this bad? Þ Consider forwarding tables on backbone routers Would have an entry for each mobile host Not very scalable ß What are some possible solutions? 2021-1-29 24
How to Handle mobile nodes? Addressing Dynamic Host Configuration (DHCP) Host gets new IP address in new locations k Problems k Host does not have constant name/address> how do others contact host What happens to active transport connections? 2021-129
How to Handle Mobile Nodes? (Addressing) ß Dynamic Host Configuration (DHCP) Þ Host gets new IP address in new locations Þ Problems Host does not have constant name/address how do others contact host What happens to active transport connections? 2021-1-29 25