multiple intention
2.IEEE 802.11b, nowadays mainstream protocol of Centralized Wireless LAN, has no PRI rule when SUs partake communicating medium, brings about lower utilized rate of system channel, and easily produces the instance of near_station accroaching bandwith of distant_station. In allusion to these cases, we ameliorate the multiple access technique from CSMA/CA mode to SMART_Polling mechanism, the intention is to raise system access efficiency , and improve bandwith utilized rate.

