WLAN architechture:

1. Autonomous WLAN architecture: home.
2. Centralized(switched) WlAN Architecture

   Centralized server and Access point: access point controller only do following tasks:

   • Security and access control;
   • VLAN management;
   • User roaming between access points
   • Quality of service
3. Distributed WLAN architecture( Mesh system): American militery.