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Saturday, November 21, 2009

Kenali teknologi 802.11x

Assalamualaikum wrt..

Kita biasa mendengar wifi. Tahukah anda apakah disebalik teknologi tersebut? Pada kalini saya ingin merungkai jenis2 protocol tanpa wayar untuk kita sama2 mengenal.



In order to ensure high throughput, good range and universal interoperability, IEEE 802.11x standards govern WLAN operations. WLAN and IEEE 802.11x have become synonymous over the years:

  • IEEE 802.11 - The original 1 Mbit/s and 2Mbit/s, 2.4GHz RF and IR standard (1999)
  • IEEE 802.11a - 54Mbit/s, 5 GHz standard (1999, shipping products in 2001)
  • IEEE 802.11b - Enhancements to 802.11 to support 5.5 and 11 Mbit/s (1999)
  • IEEE 802.11c - Bridge operation procedures; included in the IEEE 802.1D standard (2001)
  • IEEE 802.11d - International (country-to-country) roaming extensions (2001)
  • IEEE 802.11e - Enhancement: QoS, including packet bursting (2005)
  • IEEE 802.11f - Inter-Access Point Protocol (2003) Withdrawn February 2006
  • IEEE 802.11g - 54 Mbit/s, 2.4 GHz standard (backwards compatible with b) (2003)
  • IEEE 802.11h - Spectrum Managed 802.11a (5 GHz) for European compatibility (2004)
  • IEEE 802.11i - Enhanced security (2004)
  • IEEE 802.11j - Extensions for Japan (2004)
  • IEEE 802.11k - Radio resource measurement enhancements
  • IEEE 802.11l - (reserved and will not be used)
  • IEEE 802.11m - Maintenance of the standard: odds and ends
  • IEEE 802.11n - Higher throughput improvements
  • IEEE 802.11o - (reserved and will not be used)
  • IEEE 802.11p - WAVE - Wireless Access for the Vehicular Environment (such as ambulances
    and passengers cars)
  • IEEE 802.11q - (reserved and will not be used, can be onfused with 802.1Q VLAN trunking)
  • IEEE 802.11r - Fast roaming
  • IEEE 802.11s - ESS Mesh Networking
  • IEEE 802.11t - Wireless Performance Prediction (WPP) - test methods and metrics
  • IEEE 802.11u - Interworking with non-802 networks (e.g., cellular)
  • IEEE 802.11v - Wireless network management
  • IEEE 802.11w - Protected Management Frames
  • IEEE 802.11x - (reserved and will not be used)
  • IEEE 802.11y - 3650-3700 Operations in USA



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