Testbed: The Wireless Emulator

• Network device driver for AIX 4.2.0, can be disabled/enabled dynamically

• Reuse NDD (network device driver) for existing Ethernet card, replace ND (network demuxer) and NID (network interface driver) for existing device “en0”

• Supports dynamic changes of bandwidth and packet loss probability through user-level process

• Developed simulator to model different wireless MAC protocols and derive bandwidth and error distributions:

  • slotted Aloha
  • CDPD
  • WaveLAN (under development)

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