Why Worry About Mobility?
n mobile computing is on the rise
wireless communications technologies widely available
n IEEE 802.11 finally standardized
MAC layer protocol with lots of features: power saving, ad-hoc
networking support, maybe even isochronous communication
n cellular telephony everywhere
AMPS and CDPD
GSM
n wireless indoor equipment (IR and RF)
people expect the same from both desktop and laptop
n high-resolution color display
n 200 MHz processor
n multi-gigabyte disk
n with a docking station, the laptop is the desktop