WiFi 7 (Wi-Fi 7) ndiye mulingo wotsatira wa Wi-Fi. Mogwirizana ndi IEEE 802.11, mulingo watsopano wosinthidwa wa IEEE 802.11be - Extremely High Throughput (EHT) idzatulutsidwa
Wi-Fi 7 imayambitsa matekinoloje monga 320MHz bandwidth, 4096-QAM, Multi-RU, ntchito yolumikizira maulalo angapo, kukhathamiritsa kwa MU-MIMO, ndi mgwirizano wama AP ambiri pamaziko a Wi-Fi 6, kupangitsa Wi-Fi 7 kukhala yamphamvu kwambiri. kuposa Wi-Fi 7. Chifukwa Wi-Fi 6 idzapereka mitengo yapamwamba yotumizira deta ndi kuchedwa kochepa. Wi-Fi 7 ikuyembekezeka kuthandizira kupitilira mpaka 30Gbps, pafupifupi kuwirikiza katatu kuposa Wi-Fi 6.
Zatsopano Zothandizidwa ndi Wi-Fi 7
- Imathandizira 320MHz bandwidth
- Thandizani njira ya Multi-RU
- Yambitsani ukadaulo wapamwamba kwambiri wa 4096-QAM
- Yambitsani makina a Multi-Link multi-link
- Thandizani mitsinje yambiri ya data, kupititsa patsogolo ntchito ya MIMO
- Thandizani kukonzekera kwa mgwirizano pakati pa ma AP angapo
- Mawonekedwe a Wi-Fi 7
1. Chifukwa chiyani Wi-Fi 7?
Ndi chitukuko chaukadaulo wa WLAN, mabanja ndi mabizinesi amadalira kwambiri pa Wi-Fi ngati njira yayikulu yolumikizira netiweki. M'zaka zaposachedwa, mapulogalamu atsopano ali ndi zofunikira zowonjezera komanso zochedwa, monga kanema wa 4K ndi 8K (chiwongoladzanja chikhoza kufika ku 20Gbps), VR / AR, masewera (chofunikira chochedwa ndi chosakwana 5ms), ofesi yakutali, ndi msonkhano wapavidiyo pa intaneti. ndi cloud computing, etc. Ngakhale kutulutsidwa kwaposachedwa kwa Wi-Fi 6 kwayang'ana kwambiri zomwe ogwiritsa ntchito akukumana nazo pazambiri zochulukirachulukira, sangathe kukwaniritsa zomwe tatchulazi. Zofunikira zapamwamba pakudutsa ndi latency. (Takulandilani kuti mumvetsere ku akaunti yovomerezeka: injiniya wa intaneti Aaron)
Kuti izi zitheke, bungwe la IEEE 802.11 latsala pang'ono kutulutsa IEEE 802.11be EHT yatsopano yowunikiridwa, yomwe ndi Wi-Fi 7.
2. Nthawi yotulutsidwa ya Wi-Fi 7
Gulu logwira ntchito la IEEE 802.11be EHT linakhazikitsidwa mu May 2019, ndipo chitukuko cha 802.11be (Wi-Fi 7) chikuchitikabe. Mulingo wonse wa protocol udzatulutsidwa mu Zotulutsa ziwiri, ndipo Release1 ikuyembekezeka kutulutsa mtundu woyamba mu 2021 Draft Draft1.0 ikuyembekezeka kutulutsa muyezo kumapeto kwa 2022; Release2 ikuyembekezeka kuyamba koyambirira kwa 2022 ndikumaliza kutulutsa kokhazikika kumapeto kwa 2024.
3. Wi-Fi 7 vs Wi-Fi 6
Kutengera mulingo wa Wi-Fi 6, Wi-Fi 7 imabweretsa matekinoloje atsopano ambiri, omwe amawonetsedwa mu:
4. Zatsopano Zothandizidwa ndi Wi-Fi 7
Cholinga cha protocol ya Wi-Fi 7 ndikuwonjezera kuchuluka kwa ma network a WLAN ku 30Gbps ndikupereka zitsimikizo zotsika za latency. Kuti akwaniritse cholingachi, ndondomeko yonseyi yapanga kusintha kofanana mu PHY wosanjikiza ndi MAC wosanjikiza. Poyerekeza ndi protocol ya Wi-Fi 6, kusintha kwakukulu kwaukadaulo komwe kumabwera ndi protocol ya Wi-Fi 7 ndi motere:
Support Maximum 320MHz Bandwidth
Sipekitiramu yopanda chilolezo mu 2.4GHz ndi 5GHz ma frequency band ndi ochepa komanso odzaza. Wi-Fi yomwe ilipo ikayambitsa mapulogalamu omwe akubwera monga VR/AR, mosakayikira idzakumana ndi vuto la QoS yotsika. Kuti mukwaniritse cholinga chokhala ndi mphamvu zosachepera 30Gbps, Wi-Fi 7 ipitiliza kuyambitsa band ya 6GHz frequency band ndikuwonjezera mitundu yatsopano ya bandiwifi, kuphatikiza 240MHz mosalekeza, 160+80MHz yosapitilira, 320 MHz yosalekeza komanso yosagwirizana. -kupitilira 160 + 160MHz. (Takulandilani kuti mumvetsere ku akaunti yovomerezeka: injiniya wa intaneti Aaron)
Thandizani Multi-RU Mechanism
Mu Wi-Fi 6, wogwiritsa ntchito aliyense amatha kutumiza kapena kulandira mafelemu pa RU yomwe wapatsidwa, zomwe zimachepetsa kwambiri kusinthasintha kwakukonzekera kwazinthu zambiri. Kuti athetse vutoli ndikupititsa patsogolo magwiridwe antchito, Wi-Fi 7 imatanthawuza njira yomwe imalola ma RU angapo kuperekedwa kwa wogwiritsa ntchito m'modzi. Inde, pofuna kulinganiza zovuta za kukhazikitsidwa ndi kugwiritsa ntchito mawonekedwe, ndondomekoyi yakhazikitsa zoletsa zina pa kuphatikiza kwa RUs, ndiko kuti: ma RU ang'onoang'ono (RUs ochepa kuposa 242-Tone) akhoza kuphatikizidwa. okhala ndi ma RU ang'onoang'ono, ndi ma RU akulu akulu (RUs akulu kuposa kapena ofanana ndi 242-Tone) amatha kuphatikizidwa ndi ma RU akulu akulu, ndi ma RU ang'onoang'ono ndi ma RU akuluakulu saloledwa kusakanikirana.
Yambitsani ukadaulo wapamwamba kwambiri wa 4096-QAM
Njira yapamwamba kwambiri yosinthiraWi-Fi 6ndi 1024-QAM, momwe zilembo zosinthira zimanyamula 10 bits. Kuti muwonjezere kuchuluka, Wi-Fi 7 ibweretsa 4096-QAM, kuti zilembo zosinthira zizinyamula ma bits 12. Pansi pa kabisidwe komweko, Wi-Fi 7's 4096-QAM imatha kuchulukitsa 20% poyerekeza ndi Wi-Fi 6's 1024-QAM. (Takulandilani kuti mumvetsere ku akaunti yovomerezeka: injiniya wa intaneti Aaron)
Yambitsani makina a Multi-Link multi-link
Kuti tikwaniritse kugwiritsa ntchito moyenera zida zonse zomwe zilipo, pakufunika mwachangu kukhazikitsa njira zatsopano zowongolera masipekitiramu, kulumikizana ndi kutumizirana mauthenga pa 2.4 GHz, 5 GHz ndi 6 GHz. Gulu logwira ntchito lidatanthauzira matekinoloje okhudzana ndi kuphatikizika kwamalumikizidwe angapo, makamaka kuphatikiza mamangidwe a MAC owonjezera maulalo ambiri, mwayi wolumikizana ndi njira zambiri, kutumizirana maulalo ambiri ndi matekinoloje ena ofananira.
Thandizani mitsinje yambiri ya data, kupititsa patsogolo ntchito ya MIMO
Mu Wi-Fi 7, kuchuluka kwa mitsinje yakula kuchokera pa 8 mpaka 16 pa Wi-Fi 6, yomwe mwachidziwitso imatha kupitilira kuwirikiza kawiri kuchuluka kwapathupi. Kuthandizira mitsinje yambiri ya data kudzabweretsanso zida zamphamvu kwambiri-zogawidwa za MIMO, zomwe zikutanthauza kuti mitsinje ya data ya 16 ikhoza kuperekedwa osati ndi malo amodzi, koma ndi malo ofikira angapo nthawi imodzi, zomwe zikutanthauza kuti ma AP ambiri ayenera kugwirizana wina ndi mzake. ntchito.
Thandizani kukonzekera kwa mgwirizano pakati pa ma AP angapo
Pakali pano, mkati mwa ndondomeko ya 802.11, palibe mgwirizano wambiri pakati pa APs. Ntchito zodziwika bwino za WLAN monga kusintha kwadzidzidzi komanso kuyendayenda mwanzeru ndizomwe zimafotokozedwa ndi ogulitsa. Cholinga cha mgwirizano wapakati pa AP ndikungokulitsa kusankha kwa mayendedwe, kusintha katundu pakati pa ma AP, ndi zina zambiri, kuti mukwaniritse cholinga chogwiritsa ntchito moyenera komanso kugawa moyenera zida zama radio frequency. Kukonzekera kogwirizana pakati pa ma AP angapo mu Wi-Fi 7, kuphatikiza kulinganiza kogwirizana pakati pa ma cell a nthawi ndi ma frequency domain, kusokoneza kulumikizana pakati pa ma cell, ndikugawa MIMO, kumatha kuchepetsa kusokoneza pakati pa ma APs, Kupititsa patsogolo kwambiri kugwiritsa ntchito mawonekedwe a mpweya.
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Pali njira zambiri zogwirizanitsira ndandanda pakati pa ma AP angapo, kuphatikiza C-OFDMA (Coordinated Orthogonal Frequency-Division Multiple Access), CSR (Coordinated Spatial Reuse), CBF (Coordinated Beamforming), ndi JXT (Joint Transmission).
5. Kagwiritsidwe Ntchito ka Wi-Fi 7
Zatsopano zomwe zidayambitsidwa ndi Wi-Fi 7 zidzakulitsa kwambiri kuchuluka kwa kutumizira kwa data ndikupereka latency yotsika, ndipo zabwino izi zitha kuthandiza kwambiri pamapulogalamu omwe akubwera, motere:
- Kanema mtsinje
- Msonkhano Wavidiyo/Mawu
- Masewera opanda zingwe
- Kugwirizana kwanthawi yeniyeni
- Cloud/Edge Computing
- Industrial Internet of Zinthu
- Immersive AR/VR
- interactive telemedicine
Nthawi yotumiza: Feb-20-2023