I-802.11n kufuneka ichazwe ngokwahlukileyo. Okwangoku, imarike yesiqhelo isebenzisa le protocol yokuhanjiswa kweWiFi.
I-802.11n yiprotocol esemgangathweni yothumelo olungenazingcingo. Yitekhnoloji yokwenza i-epoch-making. Inkangeleko yayo yenza ukuba izinga lothungelwano lwamacingo linyuke kakhulu. Ukuze kuphuculwe imigangatho emibini yangaphambili yothungelwano olungenazingcingo, kubandakanywa ukuphuculwa kwenethiwekhi kunye nokusilela kwetrafikhi ye-802.11a kunye ne-802.11g.
Isantya esiphezulu sothumelo yi-600 Mbit / s kwithiyori, kodwa ayikwazi ukufikelela kwisantya esiphezulu ekusebenzeni ngenxa yemeko yokusingqongileyo kunye noyilo. Xa kuthelekiswa ne-54mbit/s yangaphambili, iphuculwe kakhulu kwaye umgama wothumelo nawo uya kwandiswa.
Iqela elisebenzayo le-IEEE 802.11 liseke iqela lophando le-high throughput (HT) ngo-2002 ukwenza isizukulwana esitsha semigangatho, kwaye labhengeza ngokusesikweni umgangatho we-802.11n osekwe kwi-MIMO-OFDM ngo-2009. Eyona nto ibalulekileyo kukuba lenze impumelelo enkulu. ngexabiso.
I-802.11 isebenzisa iitekhnoloji ezininzi ezintsha, ezizisa abasebenzisi indawo yamava amatsha kraca. Ngaphantsi kwale protocol, imboni ye-WLAN iphuhliswe kakhulu, kwaye ingcamango ye-WiFi ithathe ingcambu. Ukuza kuthi ga ngoku, inani elikhulu lee-terminals ze-802.11n zisasetyenziswa kwinethiwekhi.
Itekhnoloji ye-802.11n iqonda i-bandwidth enkulu kwaye izisa iimeko ezinkulu zesicelo kwi-WiFi.
I-802.11n izise itekhnoloji ezininzi ezintsha. Kwi-802.11n, i-teknoloji ye-WLAN iphuculwe ngokupheleleyo ngokudibanisa ukulungelelaniswa komgangatho womzimba kunye ne-MAC layer. I-MIMO eyilwe yitekhnoloji yomgangatho womzimba ibaluleke kakhulu. I-MIMO-OFDM 40MHz kunye ne-teknoloji emfutshane ye-GI isetyenziselwa ukuphucula i-throughput umaleko womzimba ukuya kwi-600mbps.
I-GI ithetha ukuba, ngenxa yempembelelo ye-multipath effect, ulwazi luya kuhanjiswa ngeendlela ezininzi, ezinokungqubana kunye nokukhokelela ekuphazamisekeni kwe-intersymbol. Ngenxa yesi sizathu, umgangatho we-802.11a / g ufuna ukuba xa uthumela iimpawu zolwazi, kufuneka kubekho ixesha le-0.8us phakathi kweesimboli zolwazi, ezibizwa ngokuba yi-garden interval.
Ukongeza kwi-optimization ye-layer optimization, i-802.11n iphinda ikhulise uluhlu lweprotocol ye-MAC, isebenzisa i-block ACK, i-frame aggregation, kunye nobunye ubuchwepheshe, obuphucula kakhulu ukusebenza kwe-MAC. Kuphela umaleko womzimba ophuculweyo ukuba iprotocol yomaleko we-MAC ayilungiswanga. Kufana nokwakha indlela ebanzi, kodwa ayikakhawulezi ngaphandle kocwangciso oluhle lwendlela.
Oku kungentla yi ieee802.11n ingcaciso yolwazi eziswe kuweShenzhen HDV Phoelectron Technology Co., Ltd. ndiyathemba ukuba eli nqaku linokukunceda ukwandisa ulwazi lwakho. Ngaphandle kweli nqaku ukuba ujonge inkampani elungileyo yomenzi wezixhobo zonxibelelwano lwefiber onokuthi uyithathele ingqalelongathi.
Iimveliso zonxibelelwano eziveliswe yikhava yenkampani:
Imodyuli:iimodyuli zefiber optical, Iimodyuli ze-Ethernet, iimodyuli ze-fiber optical transceiver, iimodyuli zokufikelela kwifiber optical, Iimodyuli ze-SSFP ezibonakalayo, kwayeI-SFP optical fibers, njl.
I-ONUudidi:EPON ONU, AC ONU, ifayibha optical ONU, CATV ONU, GPON ONU, XPON ONU, njl.
OLTiklasi:Ukutshintsha OLT, GPON OLT, EPON OLT, unxibelelwanoOLT, njl.
Ezi mveliso zingentla zinokuxhasa iimeko ezahlukeneyo zenethiwekhi. Kwezi mveliso zingentla, iqela elinobuchule nelinamandla le-R & D lidityaniswe ukuze libonelele ngenkxaso yobugcisa kubathengi, kwaye iqela loshishino elicingayo nelinobuchule linokubonelela ngeenkonzo ezikumgangatho ophezulu kubathengi kwangethuba.ukubonisanakwaye emva komsebenzi.