§ Density enables broad range of emulation
§ Wireless
q Deploy devices throughout campus
q Measure NxN path characteristics
   (e.g. power, interference, bit error rate)
q Employ diversity:  900 MHz, Bluetooth, IEEE 802.11
§  Mobile
q Leverage passive “couriers”
Assign PDAs to students walking to class
Equip public transit system with higher-end devices
q Provides a realistic, predictable mobile testbed