Difference between revisions of "The Increase in the speed of internet connection"

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*802.11n expected in 2005/6 - will probably deliver 200+ Mbit/s
*802.11n expected in 2005/6 - will probably deliver 200+ Mbit/s


==Web Resources:=
==Web Resources:==
*http://www.ieee802.org/11
*http://www.ieee802.org/11
*http://www.intel.com/personal/do_more/wireless/wifi.htm
*http://www.intel.com/personal/do_more/wireless/wifi.htm
*http://en.wikipedia.org/wiki/802.11
*http://en.wikipedia.org/wiki/802.11

Revision as of 08:17, 16 March 2005

Description:

Enablers:

  • Increasing attention of research on the 802.11 standard
  • Increased support by major industry leaders - e.g. Intel, Apple

Inhibitors:

  • Radio-frequency transmission difficulties to consider:
    • Multi-path fading
    • Signal to noise ratios
    • Interference - electromagnetic and physical
    • Usable transmission distance
  • Regulatory limits on radio channels available
  • Regulatory limits on power levels for transmission
  • Error detection and correction mechanisms reduce usable payload size
  • Security fears

Paradigms:

Emerging paradigms associated with the emergence of IEEE 802.11x

  • Wi-Fi
  • Hotspots
  • Wireless communities
  • Wardriving
  • Elektrosmog

Experts:

Timing:

  • Original IEEE 802.11 standard established in 1997 - 1Mbit/s and 2Mbit/s
  • 802.11b amendment in 1999 - 11Mbit/s
  • 802.11a also amended in 1999 but only really available in 2001, after 802.11b - 54Mbit/s but *operates at 5GHz
  • 802.11g available in 2003 - 54Mbit/s but now at 2.4GHz again
  • 802.11n expected in 2005/6 - will probably deliver 200+ Mbit/s

Web Resources:

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