Basic HTML version of Foils prepared Dec. 6 98

Foil 38 Wireless LAN (2)

From Introduction to Local Area Networks LANs Lectures at Xi'an Jaotong University -- Sept 1998. by Roman Markowski
OSI Data Link layer:
  • DFWMAC - Distributed Foundation Wireless Media Access Control
  • access method: CSMA/CA - Carrier Sense Multiple Access with Collision Avoidance (no ability to detect collisions)
typical parameters:
  • data rates: 2 Mbps, 10 Mbps
  • distance: up to 3 miles; up to 10 miles with amplifiers;
  • up to 30 miles - point-to-point without obstacles (mountains, hills)
topologies: point-to-point, point-to-mulitipoint

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