2 . the effects of various access methods of ieee 802 . 11b are investigated in detail and the related mechanisms are discussed , especially , the basic access method and the rts / cts method are compared with in theory and with opnet 2 .詳細(xì)研究了ieee802 . 11b的訪(fǎng)問(wèn)控制方式,對(duì)dcf的基本訪(fǎng)問(wèn)方式和rts / cts訪(fǎng)問(wèn)方式進(jìn)行了比較,通過(guò)理論分析和仿真實(shí)驗(yàn)驗(yàn)證體現(xiàn)了在實(shí)際網(wǎng)絡(luò)中rts / cts方式的優(yōu)越性。