I-WLAN Data Link Layer

Umaleko wekhonkco lwedatha ye-WLAN isetyenziswa njengomaleko ophambili wokuhanjiswa kwedatha.Ukuqonda i-WLAN, kufuneka uyazi ngokweenkcukacha.Ngokusebenzisa ezi ngcaciso zilandelayo:
Kwiprothokholi ye-IEEE 802.11, i-sublayer yayo ye-MAC iqulethe iindlela zokufikelela kwimidiya ye-DCF kunye ne-PCF:
Intsingiselo ye-DCF: uMsebenzi woLungelelaniso oluSasazo
Ngelixa i-DCF yindlela yokufikelela esisiseko ye-IEEE 802.11 MAC, eyamkela iteknoloji ye-CSMA/CA kwaye ingeyendlela yokukhuphisana, xa le node ithumela idatha, iya kubeka iliso kwitshaneli.Kuphela xa isitishi singasebenzi apho sinokuthumela idatha.Nje ukuba ijelo lingasebenzi, indawo yokuphumla iya kulinda ixesha elibekiweyo phakathi kweDIFS.
Ukuba ukuhanjiswa kwezinye ii-nodes akuviwa phambi kokuphela kwe-DIFS, kubalwa ixesha lokubuyela emva kwe-random, elilingana nokuseta isibali-xesha se-backoff;
I-node ibona ishaneli rhoqo xa ifumana i-slot yexesha: ukuba ibona ukuba ishaneli ayisebenzi, i-backoff timer iyaqhubeka ukuya kwixesha;ngenye indlela, ixesha eliseleyo le-backoff timer linomkhenkce, kwaye i-node ilinda kwakhona ukuba umjelo ungasebenzi;emva kokuba i-DIFS idlula, i-node iyaqhubeka ukubala ukusuka kwixesha eliseleyo;Ukuba ixesha lesibali-xesha liyancipha liye kwiqanda, yonke isakhelo sedatha siya kuthunyelwa.Le yinkqubo yokulungiswa kokuhanjiswa kwedatha.
I-PCF: uMsebenzi woLungelelaniso lweeNdawo;
I-PCF ibonelela ngomnxibelelanisi wenqaku lokuvota kuzo zonke iisayithi zokuthumela okanye ukufumana idatha.Le yindlela engakhuphisaniyo, ngoko ke ungquzulwano lwesakhelo aluyi kwenzeka, kodwa lunokusetyenziswa kuphela kuthungelwano lwengingqi olungenazingcingo oluneziseko ezithile.
Oku ngasentla kukwaziswa kwe-WLAN Data Link Layer eziswe ngu-Shenzhen Haidiwei Optoelectronics Technology Co., Ltd. I-Shenzhen HDV Phoelectron Technology Co., Ltd. ngumenzi okhethekileyo kwizixhobo zonxibelelwano olubonakalayo, kunye nonxibelelwano lwayo.iimveliso.