Ƙungiyar aiki ta fara aiki akan daidaitattun baya a cikin 2014 kuma yanzu tana aiki akan daftarin 3.0. Wanne ya ɗan bambanta da al'ummomin da suka gabata na ka'idodin 802.11, saboda a can an yi duk aikin a cikin zane biyu. Wannan yana faruwa saboda ɗimbin ɗimbin ɗimbin sauye-sauyen hadaddun da aka tsara, wanda saboda haka yana buƙatar ƙarin cikakkun bayanai da ƙayyadaddun gwajin dacewa. Kalubalen farko da ƙungiyar ta fuskanta shine inganta aikin gani don ƙara ƙarfin WLANs tare da yawan tashoshi masu biyan kuɗi da wuraren shiga. Babban direbobi don haɓaka ma'auni sune: karuwa a yawan masu biyan kuɗi na wayar hannu, watsa shirye-shiryen kai tsaye a kan cibiyoyin sadarwar jama'a (mahimmancin ƙaddamar da zirga-zirga) kuma, ba shakka, IoT.
A tsari, sabbin abubuwa sunyi kama da haka:
MIMO 8x8, ƙarin rafukan sararin samaniya
Za a sami goyan baya ga MIMO 8x8, har zuwa 8SS (Rafukan sararin samaniya). Ma'auni na 802.11ac kuma ya bayyana goyon baya ga 8 SS a ka'idar, amma a aikace, 802.11ac "wave 2" wuraren samun damar shiga sun iyakance ga tallafawa rafukan sararin samaniya 4. Dangane da haka, wuraren samun damar da ke tallafawa MIMO 8x8 za su iya yin hidima a lokaci guda har zuwa abokan ciniki 8 1x1, abokan ciniki 2x2 huɗu, da sauransu.
MU-MIMO DL/UL (Mai amfani da yawa MIMO Downlink/Uplink)
Goyon baya na lokaci guda don yanayin masu amfani da yawa don duka tashoshi masu saukewa da lodawa. Yiwuwar samun damar shiga gasa lokaci guda zuwa tashar lodawa, haɗawa duka kwanan wata da firam ɗin sarrafawa zai rage girman “sama”, wanda zai haifar da haɓaka kayan aiki da raguwar lokacin amsawa.
Dogon alamar OFDM
OFDM yana aiki a cikin ma'auni na 802.11a/g/n/ac tsawon ~ shekaru 20 ba tare da wani canje-canje ba. Bisa ga ma'auni, tashar da ke da faɗin 20MGz ya ƙunshi masu jigilar kayayyaki 64 da aka raba tsakanin juna tare da tazarar 312,5 kHz (20MHz)./64). Tun da masana'antar semiconductor ta haɓaka sosai a wannan lokacin, 802.11x yana ba da haɓaka sau 4 a cikin masu ɗaukar kaya zuwa 256, tare da tazara tsakanin masu ɗaukar kaya na 78,125 kHz. Tsawon alamar OFDM (lokaci) ya yi daidai da mitar, kuma saboda haka zai ƙaru da sau 4 daga 3,2 μs zuwa 12,8 μs. Wannan haɓakawa zai ƙara inganci da amincin watsa bayanai, musamman a cikin "waje" WLAN.
Rage Rage
An kara sabbin dabi'u don tazarar kariya tsakanin firam, wanda yanzu zai iya zama daidai da 1,6 µs da 3,2 µs don "waje" WLAN; don "na cikin gida" an bar tazara a 0,8 µs. Sabon tsarin fakiti tare da ingantaccen bayani (dogon) gabatarwa. Duk abubuwan da ke sama za su ba ku damar samun haɓakar haɓakar ninki 4 a saurin haɗin gwiwa a gefen hanyar sadarwa.
OFDMA DL/UL (Maɗaukakin Matsakaicin Maɗaukaki na Orthogonal Dama)
Ɗaya daga cikin manyan canje-canjen shine ƙaddamar da OFDMA maimakon OFDM. Ana amfani da fasahar OFDMA a cibiyoyin sadarwar LTE kuma ta tabbatar da yin tasiri sosai. Bambanci shine lokacin da ake watsawa a cikin OFDM, ana shagaltar da dukkan tashar mitar kuma har sai an ƙare watsawa, abokin ciniki na gaba ba zai iya ɗaukar albarkatun mitar ba. A cikin OFDMA, ana magance wannan matsala ta hanyar rarraba tashar zuwa tashoshi masu fadi daban-daban, abin da ake kira RU (Resource Units). A aikace, wannan yana nufin cewa 256 subcarriers na tashar 20MHz za a iya raba zuwa RUs na 26 subcarriers. Ana iya sanya kowane RU nasa tsarin coding na MCS, da kuma watsa wutar lantarki.
Gabaɗaya, wannan zai kawo haɓakar haɓakar ƙarfin cibiyar sadarwa gabaɗaya, da kuma kayan aiki ga kowane abokin ciniki ɗaya.
1024 QAM
An ƙara sabon MCS (Modulation and Codeing Sets) 10 da 11 don daidaitawa na 1024-QAM. Wato, yanzu hali ɗaya a cikin wannan makircin zai ɗauki bayanai guda 10, kuma wannan shine haɓaka 25% idan aka kwatanta da 8bit a cikin 256-QAM.
TWT (Target Wake Time) - "Tsarin albarkatun Up Link"
Tsarin ceton wutar lantarki wanda ya tabbatar da kansa a cikin ma'aunin 802.11ah kuma yanzu an daidaita shi zuwa 802.11ax. TWT yana ba da damar wuraren shiga don gaya wa abokan ciniki lokacin shigar da yanayin ceton wuta kuma yana ba da jadawalin lokacin tashi don karɓa ko watsa bayanai. Waɗannan ƴan gajeren lokaci ne, amma samun damar yin bacci gungu na ɗan gajeren lokaci zai haifar da babban bambanci ga rayuwar baturi. Rage "husuma" da karo tsakanin abokan ciniki zai ƙara lokacin da aka kashe a yanayin ceton wutar lantarki. Dangane da nau'in zirga-zirga, haɓakawa a cikin amfani da wutar lantarki zai iya bambanta daga 65% zuwa 95% (bisa ga gwajin Broadcom). Ga na'urorin IoT, tallafin TWT yana da mahimmanci.
Launi BSS - Sake amfani da sarari
Don ƙara ƙarfin cibiyar sadarwar WLAN mai girma, yana da mahimmanci don ƙara yawan sake amfani da albarkatun tashoshi. Don rage tasirin BSS da ke aiki a kan tashar guda ɗaya, an ba da shawarar a yi musu alama da "launi-bit". Wannan zai ba ku damar daidaita ƙarfin CCA (ƙimar tashoshi bayyananne) hankali da ikon watsawa. Ƙarfin hanyar sadarwa zai ƙaru saboda ƙaddamar da shirin tashoshi, yayin da tsangwama da ake ciki ba zai yi tasiri ba akan zaɓin MCS.
Saboda sabuntawa masu zuwa na matakan aminci zuwa , Ba kowa ba ne zai iya magance matsalolin tsaro tare da sabuntawar software mai sauƙi, don haka Extreme Networks za su gabatar da wuraren samun dama tare da tallafin kayan aiki don 2018ax da WPA802.11 a cikin kwata na hudu na 3.
Karin bayani .
source: www.habr.com