WiFi 7 (Wi-Fi 7) yog tus txheej txheem tom ntej Wi-Fi.Raws li IEEE 802.11, tus qauv hloov kho tshiab IEEE 802.11be - Tsis tshua muaj siab dhau (EHT) yuav raug tso tawm
Wi-Fi 7 qhia txog cov thev naus laus zis xws li 320MHz bandwidth, 4096-QAM, Multi-RU, kev ua haujlwm sib txuas, txhim kho MU-MIMO, thiab kev koom tes ntau AP raws li Wi-Fi 6, ua rau Wi-Fi 7 muaj zog dua. tshaj Wi-Fi 7. Vim tias Wi-Fi 6 yuav muab cov ntaub ntawv hloov pauv ntau dua thiab qis dua latency.Wi-Fi 7 xav tias yuav txhawb nqa kev nce mus txog 30Gbps, kwv yees li peb npaug ntawm Wi-Fi 6.
Cov Nta Tshiab Txhawb los ntawm Wi-Fi 7
- Txhawb siab tshaj 320MHz bandwidth
- Txhawb Multi-RU mechanism
- Qhia kev txiav txim siab dua 4096-QAM modulation technology
- Qhia Multi-Link multi-link mechanism
- Txhawb ntau cov ntaub ntawv ntws, MIMO muaj nuj nqi txhim kho
- Txhawb kev teem sijhawm sib koom tes ntawm ntau APs
- Daim ntawv thov Scenario ntawm Wi-Fi 7
1. Vim li cas Wi-Fi 7?
Nrog txoj kev loj hlob ntawm WLAN thev naus laus zis, cov tsev neeg thiab cov lag luam vam khom ntau dua ntawm Wi-Fi ua lub ntsiab lus tseem ceeb ntawm kev nkag mus rau lub network.Nyob rau hauv xyoo tas los no, cov ntawv thov tshiab muaj cov kev xav tau siab dua thiab ncua sij hawm, xws li 4K thiab 8K video (tus nqi sib kis yuav ncav cuag 20Gbps), VR / AR, kev ua si (qhov yuav tsum tau ncua yog tsawg dua 5ms), chaw taws teeb chaw taws teeb, thiab kev sib tham hauv online. thiab huab xam, thiab lwm yam. Txawm hais tias qhov kev tso tawm tshiab kawg ntawm Wi-Fi 6 tau tsom rau cov neeg siv kev paub hauv cov xwm txheej siab, nws tseem tsis tuaj yeem ua tau raws li cov lus hais saum toj no siab dua rau kev nkag mus thiab latency.(Zoo siab txais tos mus saib rau tus account official: network engineer Aaron)
Txog qhov kawg no, IEEE 802.11 tus qauv lub koom haum tab tom yuav tso tawm tus qauv hloov tshiab IEEE 802.11be EHT, uas yog Wi-Fi 7.
2. Tso sijhawm ntawm Wi-nkaus 7
Pawg neeg ua haujlwm IEEE 802.11be EHT tau tsim nyob rau lub Tsib Hlis 2019, thiab kev txhim kho ntawm 802.11be (Wi-Fi 7) tseem tab tom ua haujlwm.Tag nrho cov txheej txheem raws tu qauv yuav raug tso tawm hauv ob qhov Kev Tshaj Tawm, thiab Kev Tshaj Tawm 1 yuav tsum tso tawm thawj version hauv 2021 Draft Draft1.0 yuav tsum tso tawm tus qauv thaum kawg ntawm 2022;Kev Tshaj Tawm 2 yuav tsum pib thaum ntxov 2022 thiab ua kom tiav cov qauv tso tawm los ntawm qhov kawg ntawm 2024.
3. Wi-Fi 7 vs Wi-Fi 6
Raws li Wi-Fi 6 tus qauv, Wi-Fi 7 qhia ntau yam tshiab, feem ntau xav txog hauv:
4. Cov Nta Tshiab Txhawb los ntawm Wi-Fi 7
Lub hom phiaj ntawm Wi-Fi 7 raws tu qauv yog txhawm rau txhawm rau nce tus nqi ntawm WLAN network rau 30Gbps thiab muab kev lees paub qis-latency nkag.Txhawm rau ua kom tau raws li lub hom phiaj no, tag nrho cov txheej txheem tau hloov pauv hauv PHY txheej thiab MAC txheej.Piv nrog rau Wi-Fi 6 raws tu qauv, cov kev hloov pauv tseem ceeb coj los ntawm Wi-Fi 7 raws tu qauv yog raws li hauv qab no:
Txhawb siab tshaj 320MHz Bandwidth
Daim ntawv tso cai-dawb spectrum nyob rau hauv 2.4GHz thiab 5GHz zaus bands yog txwv thiab muaj neeg coob coob.Thaum Wi-Fi uas twb muaj lawm khiav cov ntawv thov tshiab xws li VR / AR, nws yuav tsis pom qhov teeb meem ntawm QoS qis.Txhawm rau ua tiav lub hom phiaj ntawm qhov siab tshaj plaws ntawm qhov tsis pub tsawg tshaj 30Gbps, Wi-Fi 7 yuav txuas ntxiv qhia txog 6GHz zaus band thiab ntxiv cov qauv bandwidth tshiab, suav nrog 240MHz txuas ntxiv, tsis tu ncua 160 + 80MHz, txuas ntxiv 320 MHz thiab tsis yog. -Nruam 160 + 160MHz.(Zoo siab txais tos saib rau tus account official: network engineer Aaron)
Txhawb Multi-RU Mechanism
Hauv Wi-Fi 6, txhua tus neeg siv tsuas tuaj yeem xa lossis tau txais cov thav duab ntawm qhov tshwj xeeb RU, uas txwv qhov yooj yim ntawm kev teem caij spectrum.Txhawm rau daws qhov teeb meem no thiab txhim kho spectrum efficiency ntxiv, Wi-Fi 7 txhais cov txheej txheem uas tso cai rau ntau tus RUs faib rau ib tus neeg siv.Tau kawg, txhawm rau txhawm rau sib npaug qhov nyuaj ntawm kev siv thiab kev siv cov spectrum, cov txheej txheem tau ua qee yam kev txwv ntawm kev sib xyaw ntawm RUs, uas yog: me me RUs (RUs me dua 242-Tone) tuaj yeem ua ke. nrog RUs me me, thiab RUs loj (RUs ntau dua lossis sib npaug ntawm 242-Tone) tsuas yog tuaj yeem ua ke nrog RUs loj, thiab RUs me me thiab loj RUs tsis pub sib xyaw.
Qhia kev txiav txim siab dua 4096-QAM modulation technology
Qhov siab tshaj modulation txoj kev ntawmWi-Fi 6yog 1024-QAM, nyob rau hauv uas lub modulation cim nqa 10 khoom.Txhawm rau kom nce tus nqi ntxiv, Wi-Fi 7 yuav qhia 4096-QAM, kom cov cim kev hloov pauv nqa 12 khoom.Raws li tib lub encoding, Wi-Fi 7′s 4096-QAM tuaj yeem ua tiav 20% tus nqi nce piv rau Wi-Fi 6′s 1024-QAM.(Zoo siab txais tos saib rau tus account official: network engineer Aaron)
Qhia Multi-Link multi-link mechanism
Txhawm rau kom ua tiav kev siv tau zoo ntawm txhua qhov kev siv spectrum muaj, yuav tsum tau tsim kom muaj kev tswj hwm spectrum tshiab, kev sib koom tes thiab kev sib kis ntawm 2.4 GHz, 5 GHz thiab 6 GHz.Cov pab pawg ua haujlwm tau teev cov thev naus laus zis ntsig txog kev sib txuas ntau qhov sib txuas, feem ntau suav nrog MAC architecture ntawm kev txhim kho ntau qhov sib txuas, kev nkag mus rau ntau qhov sib txuas, kev sib txuas sib txuas thiab lwm yam thev naus laus zis.
Txhawb ntau cov ntaub ntawv ntws, MIMO muaj nuj nqi txhim kho
Hauv Wi-Fi 7, tus naj npawb ntawm spatial kwj tau nce los ntawm 8 mus rau 16 hauv Wi-Fi 6, uas theoretically muaj peev xwm ntau dua ob npaug ntawm lub cev kis tau tus mob.Kev txhawb nqa ntau cov ntaub ntawv ntws kuj tseem yuav coj tau cov yam ntxwv muaj zog dua-muab faib MIMO, uas txhais tau hais tias 16 cov ntaub ntawv ntws tuaj yeem muab tsis tau los ntawm ib qho chaw nkag, tab sis los ntawm ntau qhov chaw nkag rau tib lub sijhawm, uas txhais tau tias ntau APs yuav tsum tau koom tes nrog ib leeg. ua haujlwm.
Txhawb kev teem sijhawm sib koom tes ntawm ntau APs
Tam sim no, nyob rau hauv lub moj khaum ntawm 802.11 raws tu qauv, yeej tsis muaj kev koom tes ntau ntawm APs.Feem ntau WLAN ua haujlwm xws li tsis siv neeg tuning thiab ntse roaming yog cov neeg muag khoom-txhais cov yam ntxwv.Lub hom phiaj ntawm kev sib koom tes ntawm AP tsuas yog txhawm rau txhim kho kev xaiv channel, kho lub nra ntawm APs, thiab lwm yam, kom ua tiav lub hom phiaj ntawm kev siv tau zoo thiab sib npaug ntawm kev faib cov xov tooj cua zaus.Kev sib koom ua ke ntawm ntau lub APs hauv Wi-Fi 7, suav nrog kev sib koom ua ke ntawm cov hlwb hauv lub sijhawm sau npe thiab zaus sau npe, cuam tshuam kev sib koom tes ntawm cov hlwb, thiab faib MIMO, tuaj yeem txo qhov cuam tshuam ntawm APs, txhim kho kev siv cov kev pabcuam huab cua.
cov
Muaj ntau txoj hauv kev los tswj kev teem sijhawm ntawm ntau APs, suav nrog C-OFDMA (Kev Sib Koom Tes Orthogonal Frequency-Division Multiple Access), CSR (Coordinated Spatial Reuse), CBF (Coordinated Beamforming), thiab JXT (Koint Transmission).
5. Daim ntawv thov Scenarios ntawm Wi-Fi 7
Cov yam ntxwv tshiab qhia los ntawm Wi-Fi 7 yuav ua rau kom cov ntaub ntawv sib kis tau zoo heev thiab muab qis dua latency, thiab cov txiaj ntsig no yuav pab tau ntau dua rau cov ntawv thov tshiab, raws li hauv qab no:
- Video kwj
- Video / Suab Conferencing
- Wireless kev ua si
- Kev sib koom tes ntawm lub sijhawm
- Huab/Edge Computing
- Industrial Internet ntawm Yam
- Immersive AR/VR
- sib tham sib telemedicine
Post lub sij hawm: Feb-20-2023