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Tsev > Xov xwm > Ntsiab lus
Lub Zog Txwj Laus Tswj Haujlwm Ntawm Qhov Txuas Lus WiFi
Apr 03, 2018

Wifi module muaj ob hom hom ntaub ntawv: Infra thiab Adhoc. Los piav txog cov topology ntawm wireless networks, ua ntej ntawm tag nrho cov, peb yuav tsum to taub ob lub ntsiab lus tseem ceeb: 1: AP, yog, taw tes wireless, yog tus creator ntawm lub network wireless, thiab lub ntsiab ntawm lub network. Ib lub wireless router rau tsev neeg lossis chaw ua haujlwm yog AP. 2: STA cov chaw, txhua qhov chaw nres nkoj uas txuas nrog lub network wireless, xws li lub laptop, PDA, thiab lwm yam khoom siv uas txuas tau rau Internet, tuaj yeem hu ua chaw.

Raws li AP, wireless network (Infra): Infra: kuj hu ua lub hauv paus network, tsim los ntawm AP, thiab ntau STA ntxiv rau lub wireless network. Hom kev network no yog tus AP yog qhov nruab nrab ntawm tag nrho cov kev sib koom tes, thiab tag nrho cov kev sib txuas lus hauv lub network yog kis los ntawm AP.

2. Kev sib txuas lus sib txuas lus nyob rau hauv lub network (Adhoc): Adhoc: tseem hu ua ib lub chaw ua haujlwm ad network, yog muaj li ob thiab ntau tshaj li ntawm STA xwb, thiab tsis muaj AP hauv lub network. Hom kev lag luam no yog ib txoj kev xoob xoob, thiab tag nrho cov STA hauv lub network tau sib txuas lus ncaj qha.

3. kev ruaj ntseg mechanism: Qhov module no txhawb ntau hom wireless network encryption, uas tuaj yeem lav qhov kev sib kis zoo ntawm cov neeg siv cov ntaub ntawv, xws li: WEP64 / WEP128 / TKIP / CCMP (AES) WEP / WPA-PSK / WPA2-PSK.

4. Tsav Kev Tshaj Tawm: Qhov module no txhawb kev sib txuas ceev los ntawm kev qhia cov zauv hauv cov xov tooj. Hauv cov txheej txheem wireless network niaj zaus, tus thawj luam ntawm tag nrho cov kev cai tam sim no yuav cia li luam mus tshawb rau (los yog Adhoc) network tsim los ntawm AP rau lub hom phiaj ntawm qhov kev txuas. No module muab cov ciaj ciam ntawm qhov chaw ua haujlwm channel. Nyob rau hauv lub zwj ceeb ntawm paub lub network, txoj haujlwm channel ntawm tus module tau teev ncaj nraim, yog li kom txhawb cov kev ceev ntawm lub network.

5. chaw nyob ruaj ntseg: Qhov module no txhawb qhov kev ua haujlwm ntawm qhov kev tawm tsam BSSID qhov chaw nyob hauv kev sib tham. Raws li 802.11 raws tu qauv, sib txawv wireless networks yuav muaj tib lub npe network (uas yog, SSID / ESSID), tiam sis yuav tsum sib haum mus rau ib qho chaw nyob hauv BSSID. Cov neeg ua txhaum cai tsis raws cai tuaj yeem txuas mus rau STA mus rau AP tsis raug cai los ntawm kev tsim kom tau ib lub wireless network nrog tib SSID / ESSID, ua rau muaj kev tawm tsam. Los ntawm txoj kev BSSID chaw nyob ruaj, nws tuaj yeem tiv thaiv STA txhob nkag mus rau kev cai lij choj network, thiaj li txhim kho kev ruaj ntseg ntawm wireless network.

6. Roaming wireless: Qhov module no txhawb wireless roaming raws li 802.11 raws tu qauv. Wireless roaming hais txog kev nthuav dav cov kev pab ntawm ib lub wireless network. Ib lub wireless network nrog tib SSID / ESSID yog tsim los ntawm ntau tus AP, txhua tus AP yog siv los kaw cov cheeb tsam sib txawv. Lub STA txuas nrog lub network yuav raug txuas nrog qhov kev tso siab tshaj AP ntawm cov teeb liab ntawm qhov chaw thiab yuav hloov ntawm AP AP nrog lub zog ntawm STA.

7. kev siv qhov zoo ntawm qhov kev sib txuas lus: 1. raws li kev twb kev txuas ntawm kev siv, siv tus thawj tswj configuration 2. raws li kev twb kev txuas, siv qhov kev pab cuam davhlau ya nyob twg 3. raws li kev sib txuas network, siv IE browser 4. 4. raws li kev twb kev txuas wireless,

8. Raws li qhov tseem ceeb ntawm cov tswv yim kev kho vajtse, nws yuav pab cov neeg muag khoom los ua kom tiav cov kev hloov kho ntawm cov cuab yeej kho mob kom sai dua qub, thaum txo tag nrho txoj kev loj hlob thiab kev hloov sai. Helium krypton ntseeg hais tias cov cuab yeej hauv tsev ntse txhim kho tsib txoj hauv kev ua tiav cov khoom ntse hauv tsev: kho vaj tse, embedded systems, huab kev pab, cov ntaub ntawv tsom thiab cov ntawv APP. Lawv lub hom phiaj cov neeg muaj xws li cov khoom siv loj thiab cov khoom me me, cov tuam txhab LED, cov cuab yeej siv ua khoom siv, thiab lwm yam.


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