2.4G WiFi ua haujlwm hauv 2.4GHz band nrog kev ua haujlwm zaus ntawm 2400 ~ 2483.5MHz.Cov qauv tseem ceeb ua raws yog IEEE802.11b / g / n tus qauv tsim los ntawm IEEE (Association of Electrical and Electronics Engineers).Nov yog cov qauv no. hauv kev nthuav dav:
- IEEE 802.11 yog tus qauv wireless LAN qub tsim los ntawm IEEE.Nws yog tsuas yog siv los daws cov wireless nkag mus rau cov neeg siv thiab cov neeg siv khoom siv hauv chaw ua haujlwm LAN thiab tsev kawm ntawv network.Kev pabcuam tsuas yog txwv rau kev nkag mus rau cov ntaub ntawv, nrog rau qhov siab tshaj plaws ntawm 2Mb / s.Qhov kev siv tshuab no yog outdated vim IEEE802.11 tsis txaus nyob rau hauv ob qho tib si tus nqi thiab kis tau tus mob.
- Tus qauv IEEE802.11b, tseem hu ua wireless fidelity thev naus laus zis, siv thoob ntiaj teb tswj hwm 2.4GHz dawb zaus band rau kev nthuav dav ncaj qha, nrog 83.5MHz dav thiab qhov siab tshaj plaws ntawm cov ntaub ntawv xa tawm ntawm 11Mbps.Qhov siab tshaj plaws kis tau tus mob yog 300 meters sab nraum zoov thiab 100 meters sab hauv tsev yam tsis muaj kev nkag mus rau sab hauv tsev, uas yog siv wireless kis raws tu qauv tshaj plaws tam sim no.
- IEEE 802.11g yog tus qauv hybrid uas yoog raws li tus qauv 802.11b ib txwm muaj thiab muab cov ntaub ntawv hloov pauv ntawm 11Mbps ib thib ob ntawm 2.4GHz.Nws siv cov thev naus laus zis xws li kev sib txuas ob-channel, uas txhim kho lub wireless channel kis tau tus mob bandwidth mus rau 108Mbps thiab tuaj yeem ua tau. muab qhov tseeb TCP / IP throughput ntawm 80 thiab 90Mbps.
- IEEE802.11n siv MIMO (multi-in thiab multi-out) thiab OFDM (orthogonal zaus division multiplexing) thev naus laus zis, uas tuaj yeem txhim kho tus nqi sib kis ntawm WLAN los ntawm 54Mbps tam sim no muab los ntawm 802.11a thiab 802.11g rau 108Mbps, txawm tias mus txog 60Mbps. , thiab tuaj yeem txhawb nqa lub suab zoo thiab kev sib kis video.
| Kev sib piv ntawm 802.11b/g/n cov qauv | |||
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| tiam thib ob | tiam peb | tiam plaub |
| txheem | IEEE 802.11b | IEEE 802.11g | IEEE 802.11n |
| txheej txheem modulation | CCK | BPSK, QP SK, 160AM, 64 QAM, DBPSK, DQPSK, | BPSK, QPSK, 160AM, 64 QAM |
| Hom encoding | DSSS | OFDM, DSSS | MIMO-OFDM |
| ceev | 11 Mbps | 54mbps ua | 600 Mbps |
| channel bandwidth | 22 MHz | 20 MHz | 20, 40 MHz |
| Hnub pom zoo | Xyoo 1999 | Xyoo 2003 | Xyoo 2009 |
| yam ntxwv | Tsawg nqi, mainstream qauv, technology thiab cov khoom yog laus | Tsawg tus txheeb ze zog noj, ntev kis tau tus mob nrug, muaj zog kev quab yuam, me me kev pab them nqi, tus nqi siab | Down-compatible nrog 11b / g thaum ua haujlwm ntawm 2.4g ua |
Shenzhen HDV Photoelectron Technology Ltd. yog tus kws tshaj lij ONU / ONT cov cuab yeej tsim khoom tseem yog kev sib txuas lus ntse ONU module chaw tsim khoom, peb lub tuam txhab tam sim no muag ntau yam khoom siv sib txuas lus sab saud, xws li, Fiber Media Converter, Ethernet hloov, OLT khoom, ONU khoom thiab lwm yam.Yog tias koj xav paub ntau ntxiv txog kev sib txuas lus thev naus laus zis, txais tos hu rau peb txhua lub sijhawm.