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802.11

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802.11

  1. 1. 802.11 ARCHITECTUREBYAKRAM.KHAN
  2. 2. 802.11 Types Wireless LAN uses IEEE standards 802.11a to 802.11g. ESS--- “EXTENTED SERVICE SET” It is a backbone distribution system. It also support fixed infrastructure.
  3. 3. Two type of wireless service set1. The service set has one wireless station. which communicates to an access point also called “hotspot”. The service set is also called as Basic Service Set (BSS),it supports ad hoc network.
  4. 4. 2. The other service set has several station. It may have multiple station. It has no access point . It is called independent basic service set (IBSS), it is not connected to the Distribution system.
  5. 5. 802.11-physical & data link layer SPACIFICATIONSMAC layerCSMA/CA Keywords DIFS-- SIFC-- RTS-- CTS--
  6. 6.  Physical layer:

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