Summary
  • Wireless Bridging and Internetworking

    • Generally used for connecting buildings and facilities on campuses, within metropolitan areas or between offices in different planetary locations by satellite.
    • Two basic types of microwave transmission systems:
      • Terrestrial: used when a local cable network would be too extensive, expensive or impractical.
        • Advantages:
          • Long distance transmission
          • Speedy MHz and GHz transmission
          • Flexible analog or digital transmission
          • Transmits voice, video, and data
          • Avoid most right of way problems
        • Disadvantages:
          • FCC licensing required
          • Performance degraded by weather
          • Frequency congestion
          • Power lines can interfere
          • Flash light pattern transmission
      • Satelite: use parabolic antennas, operate on low GHz frequency and rely on line-of-sight (point-to-point) antennas
        • Consist of a space component, a signal component, and a ground component.
        • Received data is transformed into binary-coded microwaves and transmitted to an orbital satellite
    • Ad-Hoc Mode is the simplest Wireless LAN (WLAN) topology. Ad-Hoc Mode does not require an access point, therefore making it possible for two wireless devices to communicate directly with one another, essentially forming a wireless, peer-to-peer network.
    • Infrastructure Mode requires a network infrastructure based around Wireless Access Points (WAP).
  • Wireless Mobil Communications

    • Modern cellular networks consist of four major components:
      • Mobile Telephone Switching Office (MTSO)
      • Cell sites with a controller and transceiver
      • System interconnections
      • Mobile telephone units
  • Wireless Network Authentication

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