Cc khi WLAN trong mng campus

mc c bn nht, h tng ca mng khng dy khng c mt t chc nht qun nu so snh vi mng c dy. V d, mt my PC vi mt card wireless c th s bt kt ni khng dy ca n mi lc mi ni. Mt iu t nhin l, PC c th truyn v nhn d liu, mt vi hot ng phi din ra.

Trong cc thut ng ca 802.11, mt nhm cc thit b mng khng dy bt k c gi l mt tp hp cc dch v (service set). Cc thit thit b khng dy phi c cng tn tp hp dch v (service set identified SSID). y l mt chui c cha trong mi frame c gi ra. Nu SSID gia thit b gi v thit b nhn l ging nhau, hai thit b c th giao tip vi nhau.

Chun 802.11 cho php hai hoc nhiu cc thit b khng dy giao tip trc tip vi nhau m khng cn thm bt k phng tin hay thit b no khc. M hnh mng ny c gi l m hnh mng ad-hoc, hoc cn gi l tp hp cc dch v c bn c lp (Independent Basic Service Set IBSS). M hnh c m t trong hnh v bn di: