WiFi 7 (Wi-Fi 7) yog tus qauv Wi-Fi tiam tom ntej. Sib raug rau IEEE 802.11, tus qauv tshiab IEEE 802.11be - Extremely High Throughput (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 ntau qhov txuas, txhim kho MU-MIMO, thiab kev koom tes ntau AP raws li Wi-Fi 6, ua rau Wi-Fi 7 muaj zog dua li Wi-Fi 7. Vim tias Wi-Fi 6 yuav muab cov nqi hloov ntaub ntawv siab dua thiab qis dua latency. Wi-Fi 7 xav tias yuav txhawb nqa qhov throughput txog li 30Gbps, kwv yees li peb zaug ntawm Wi-Fi 6.
Cov Nta Tshiab Txhawb Nqa Los Ntawm Wi-Fi 7
- Kev txhawb nqa siab tshaj plaws 320MHz bandwidth
- Txhawb nqa Multi-RU mechanism
- Qhia txog kev siv tshuab modulation siab dua 4096-QAM
- Taw qhia txog Multi-Link multilink mechanism
- Txhawb ntau cov ntaub ntawv ntws, MIMO kev ua haujlwm txhim kho
- Txhawb kev teem sijhawm sib koom tes ntawm ntau tus APs
- Cov xwm txheej ntawm daim ntawv thov ntawm Wi-nkaus 7
1. Vim li cas thiaj siv Wi-nkaus 7?
Nrog rau kev txhim kho ntawm WLAN thev naus laus zis, cov tsev neeg thiab cov lag luam vam khom ntau dua rau Wi-Fi ua txoj hauv kev tseem ceeb ntawm kev nkag mus rau hauv lub network. Nyob rau xyoo tas los no, cov ntawv thov tshiab muaj cov kev xav tau ntau dua thiab qeeb dua, xws li 4K thiab 8K video (tus nqi xa mus yuav ncav cuag 20Gbps), VR / AR, kev ua si (qhov kev xav tau qeeb dua 5ms), chaw ua haujlwm deb, thiab kev sib tham video online thiab kev suav huab, thiab lwm yam. Txawm hais tias qhov kev tso tawm tshiab ntawm Wi-Fi 6 tau tsom mus rau kev paub ntawm tus neeg siv hauv cov xwm txheej ceev ceev, nws tseem tsis tuaj yeem ua tau raws li cov kev xav tau siab dua saum toj no rau kev xa mus thiab latency. (Txais tos kom them sai sai rau tus account official: network engineer Aaron)
Txog qhov kawg no, lub koom haum tus qauv IEEE 802.11 tab tom yuav tso tawm tus qauv tshiab IEEE 802.11be EHT, uas yog Wi-Fi 7.
2. Lub sijhawm tso tawm ntawm Wi-Fi 7
Pawg neeg ua haujlwm IEEE 802.11be EHT tau tsim tsa thaum lub Tsib Hlis 2019, thiab kev tsim kho 802.11be (Wi-Fi 7) tseem tab tom ua. Tag nrho cov qauv txheej txheem yuav raug tso tawm ua ob qhov Kev Tso Tawm, thiab Kev Tso Tawm1 yuav tsum tso tawm thawj version hauv xyoo 2021. Qauv Qauv 1.0 yuav tsum tso tawm tus qauv thaum kawg ntawm xyoo 2022; Kev Tso Tawm2 yuav tsum pib thaum ntxov xyoo 2022 thiab ua tiav qhov kev tso tawm tus qauv thaum kawg ntawm xyoo 2024.
3. Wi-nkaus 7 piv rau Wi-nkaus 6
Raws li tus qauv Wi-Fi 6, Wi-Fi 7 qhia txog ntau yam thev naus laus zis tshiab, feem ntau pom hauv:
4. Cov yam ntxwv tshiab uas Wi-Fi 7 txhawb nqa
Lub hom phiaj ntawm Wi-Fi 7 protocol yog kom nce tus nqi ntawm WLAN network mus rau 30Gbps thiab muab kev lees paub nkag mus rau qis-latency. Yuav kom ua tiav lub hom phiaj no, tag nrho cov protocol tau ua cov kev hloov pauv sib xws hauv PHY txheej thiab MAC txheej. Piv nrog Wi-Fi 6 protocol, cov kev hloov pauv tseem ceeb uas Wi-Fi 7 protocol coj los yog raws li nram no:
Kev Txhawb Nqa Siab Tshaj Plaws 320MHz Bandwidth
Cov spectrum uas tsis muaj daim ntawv tso cai hauv 2.4GHz thiab 5GHz zaus bands yog tsawg thiab coob heev. Thaum Wi-Fi uas twb muaj lawm khiav cov ntawv thov tshiab xws li VR/AR, nws yuav ntsib teeb meem ntawm QoS qis. Yuav kom ua tiav lub hom phiaj ntawm qhov siab tshaj plaws ntawm tsis tsawg dua 30Gbps, Wi-Fi 7 yuav txuas ntxiv qhia txog 6GHz zaus band thiab ntxiv cov hom bandwidth tshiab, suav nrog kev sib txuas ntxiv 240MHz, tsis sib txuas ntxiv 160 + 80MHz, tsis sib txuas ntxiv 320 MHz thiab tsis sib txuas ntxiv 160 + 160MHz. (Txais tos kom them sai sai rau tus account official: network engineer Aaron)
Txhawb Nqa Multi-RU Mechanism
Hauv Wi-Fi 6, txhua tus neeg siv tsuas yog xa lossis txais cov thav duab ntawm RU tshwj xeeb uas tau muab, uas txwv tsis pub muaj kev ywj pheej ntawm kev teem sijhawm spectrum. Txhawm rau daws qhov teeb meem no thiab txhim kho qhov ua tau zoo ntawm spectrum, Wi-Fi 7 txhais ib txoj hauv kev uas tso cai rau ntau RUs kom raug faib rau ib tus neeg siv. Tau kawg, txhawm rau kom sib npaug qhov nyuaj ntawm kev siv thiab kev siv spectrum, cov txheej txheem tau ua qee qhov kev txwv rau kev sib xyaw ua ke ntawm RUs, uas yog: RUs me me (RUs me dua 242-Tone) tsuas yog tuaj yeem ua ke nrog RUs me me, thiab RUs loj (RUs loj dua lossis sib npaug rau 242-Tone) tsuas yog tuaj yeem ua ke nrog RUs loj, thiab RUs me me thiab RUs loj tsis raug tso cai sib xyaw.
Qhia txog kev siv tshuab modulation siab dua 4096-QAM
Txoj kev hloov kho siab tshaj plaws ntawmWi-nkaus 6yog 1024-QAM, uas cov cim modulation nqa 10 bits. Yuav kom nce tus nqi ntxiv, Wi-Fi 7 yuav qhia txog 4096-QAM, yog li cov cim modulation nqa 12 bits. Hauv qab tib qho encoding, Wi-Fi 7's 4096-QAM tuaj yeem ua tiav 20% nce tus nqi piv rau Wi-Fi 6's 1024-QAM. (Txais tos kom them sai sai rau tus account official: network engineer Aaron)
Taw qhia txog Multi-Link multilink mechanism
Yuav kom siv tau tag nrho cov peev txheej spectrum muaj tau zoo, yuav tsum muaj kev xav tau sai sai los tsim kom muaj kev tswj hwm spectrum tshiab, kev sib koom tes thiab kev xa xov ntawm 2.4 GHz, 5 GHz thiab 6 GHz. Pawg neeg ua haujlwm tau txhais cov thev naus laus zis ntsig txog kev sib sau ua ke ntawm ntau qhov txuas, feem ntau suav nrog MAC architecture ntawm kev txhim kho ntau qhov txuas sib sau ua ke, kev nkag mus rau ntau qhov channel, kev xa xov ntau qhov txuas thiab lwm yam thev naus laus zis ntsig txog.
Txhawb ntau cov ntaub ntawv ntws, MIMO kev ua haujlwm txhim kho
Hauv Wi-Fi 7, tus naj npawb ntawm cov kwj deg tau nce ntxiv los ntawm 8 mus rau 16 hauv Wi-Fi 6, uas qhov kev xav tuaj yeem ntau dua ob npaug ntawm tus nqi kis tau lub cev. Kev txhawb nqa ntau cov kwj deg ntaub ntawv kuj tseem yuav coj cov yam ntxwv muaj zog dua-faib tawm MIMO, uas txhais tau tias 16 cov kwj deg ntaub ntawv tuaj yeem muab tsis yog los ntawm ib qho chaw nkag, tab sis los ntawm ntau qhov chaw nkag tib lub sijhawm, uas txhais tau tias ntau lub APs yuav tsum koom tes nrog ib leeg kom ua haujlwm.
Txhawb kev teem sijhawm sib koom tes ntawm ntau tus APs
Tam sim no, nyob rau hauv lub moj khaum ntawm 802.11 protocol, tsis muaj kev koom tes ntau ntawm APs. Cov haujlwm WLAN feem ntau xws li kev kho tsis siv neeg thiab kev caij tsheb ntse yog cov yam ntxwv uas tus muag khoom txhais. Lub hom phiaj ntawm kev koom tes ntawm AP tsuas yog los ua kom zoo dua kev xaiv channel, kho qhov thauj khoom ntawm APs, thiab lwm yam, kom ua tiav lub hom phiaj ntawm kev siv tau zoo thiab kev faib cov peev txheej zaus xov tooj cua sib npaug. Kev teem sijhawm sib koom tes ntawm ntau APs hauv Wi-Fi 7, suav nrog kev npaj sib koom tes ntawm cov cell hauv lub sijhawm thiab zaus, kev sib koom tes cuam tshuam ntawm cov cell, thiab MIMO faib tawm, tuaj yeem txo qhov cuam tshuam ntawm APs, txhim kho kev siv cov peev txheej interface huab cua zoo heev.
Muaj ntau txoj hauv kev los sib koom tes teem sijhawm ntawm ntau lub APs, suav nrog C-OFDMA (Coordinated Orthogonal Frequency-Division Multiple Access), CSR (Coordinated Spatial Reuse), CBF (Coordinated Beamforming), thiab JXT (Joint Transmission).
5. Cov Xwm Txheej Siv ntawm Wi-Fi 7
Cov yam ntxwv tshiab uas Wi-Fi 7 tau qhia yuav ua rau tus nqi xa cov ntaub ntawv nce ntxiv thiab muab qhov latency qis dua, thiab cov txiaj ntsig no yuav pab tau ntau dua rau cov ntawv thov tshiab, raws li hauv qab no:
- Cov yeeb yaj kiab ntws
- Kev Sib Tham Video/Suab
- Kev ua si wireless
- Kev koom tes tiag tiag
- Kev suav huab/ntug
- Kev Lag Luam Hauv Is Taws Nem ntawm Yam
- Kev siv AR/VR uas muaj zog heev
- kev sib tham sib txuas lus hauv xov tooj
Lub sijhawm tshaj tawm: Lub Ob Hlis-20-2023