802.11 LAN architecture wireless host communicates Internet with base station o base station access point(AP) Basic Service Set(BSS) 文hub,switch (aka "cell")in infrastructure mode contains: AP or router o wireless hosts BSS1 o access point (AP):base station o ad hoc mode:hosts only BSS2 6:Wireless and Mobile Networks 6-17 6: Wireless and Mobile Networks 6-17 802.11 LAN architecture  wireless host communicates with base station  base station = access point (AP)  Basic Service Set (BSS) (aka “cell”) in infrastructure mode contains:  wireless hosts  access point (AP): base station  ad hoc mode: hosts only BSS 1 BSS 2 Internet hub, switch or router AP AP