WLAN Data Link Layer

Iyo data link layer yeWLAN inoshandiswa sekiyi layer yekufambisa data. Kuti unzwisise WLAN, iwe unofanirwawo kuiziva zvakadzama. Kuburikidza netsananguro dzinotevera:
Mune protocol yeIEEE 802.11, iyo MAC sublayer ine midhiya yekuwana nzira dzeDCF nePCF:
Zvinoreva DCF: Distributed Coordination Function
Nepo DCF iriyo nzira yekuwana yekutanga yeIEEE 802.11 MAC, iyo inotora tekinoroji yeCSMA/CA uye iri yenzira yemakwikwi, kana node iyi ikatumira data, inoongorora chiteshi. Chete kana chiteshi chisina basa ndipo painotumira data. Kana chiteshi chikashaya basa, node inomirira imwe nguva yakatarwa pakati peDIFS.
Kana kutapurirana kwedzimwe node kusinganzwiki kusati kwapera DIFS, nguva isina kurongeka yekudzokera shure inoverengwa, iyo yakaenzana nekugadzirisa nguva yekudzokera shure;
Iyo node inoona chiteshi pese painosangana nenguva: kana ikaona kuti chiteshi hachina basa, iyo backoff timer inoenderera mberi nenguva; kana zvisina kudaro, nguva yasara yenguva yekumashure yakaomeswa nechando, uye node inomirira zvakare kuti chiteshi dzisashande; mushure menguva DIFS yapfuura, node inoramba ichiverenga pasi kubva panguva yasara; Kana nguva yebackoff timer ikadzikira kusvika zero, iyo data data yese inotumirwa. Iyi ndiyo nzira yekugadzirisa yekufambisa data.
PCF: Basa Rokubatanidza Pfungwa;
PCF inopa murongi wepoindi kuvhota ese masaiti ekutumira kana kugamuchira data. Iyi inzira isingakwikwidzi, saka kudhumhana kwefuremu hakuzoitike, asi inogona kushandiswa chete mumatambo enzvimbo isina waya ane zvimwe zvivakwa.
Zviri pamusoro apa kuiswa kweWLAN Data Link Layer yakaunzwa neShenzhen Haidiwei Optoelectronics Technology Co., Ltd. Shenzhen HDV Phoelectron Technology Co., Ltd.zvigadzirwa.