Chekutanga pane zvese, isu tinofanirwa kujekesa kuti kutaurirana kwe5G hakuna kufanana ne5Ghz Wi-Fi yatichataura nezvayo nhasi.Kukurukurirana kwe5G ndiko chaizvo kupfupikiswa kwe5th Generation mobile network, iyo inonyanya kureva tekinoroji yenharembozha.Uye yedu 5G pano inoreva iyo 5GHz muyero yeWiFi, iyo inoreva chiratidzo cheWiFi chinoshandisa 5GHz frequency band kutumira data.
Zvinenge zvese zveWi-Fi pamusika zvino tsigira 2.4 GHz, uye zvirinani zvishandiso zvinogona kutsigira zvese, zvinoti 2.4 GHz uye 5 GHz.Mabhendi e-broadband routers akadai anonzi dual-band wireless routers.
Ngatitaure nezve 2.4GHz uye 5GHz muWi-Fi network pazasi.
Kuvandudzwa kwehunyanzvi hweWi-Fi kune nhoroondo yemakore makumi maviri, kubva kuchizvarwa chekutanga che802.11b kusvika 802.11g, 802.11a, 802.11n, uye kusvika kune yazvino 802.11ax (WiFi6).
Wi-Fi standard
WiFi wireless ingori pfupiso.Iwo chaiwo ari subset ye802.11 isina waya yenzvimbo nharaunda network standard.Kubva pakuzvarwa kwayo muna 1997, zvinopfuura 35 shanduro dzehukuru hwakasiyana dzakagadzirwa.Pakati pavo, 802.11a/b/g/n/ac yakagadziridzwa mamwe mavhezheni matanhatu akakura.
IEEE 802.11a
IEEE 802.11a chiyero chakadzokororwa chepakutanga 802.11 chiyero uye chakabvumirwa muna 1999. Chiyero che802.11a chinoshandisa imwechete core protocol seyekutanga.Iyo yekushanda frequency ndeye 5GHz, 52 orthogonal frequency division multiplexing subcarriers inoshandiswa, uye iyo yakanyanya mbishi yekufambisa data ndeye 54Mb/s, iyo inowana yepakati throughput yetiweki chaiyo.(20Mb/s) zvinodiwa.
Nekuda kwekuwedzera kwakawanda 2.4G frequency band, kushandiswa kwe5G frequency band ndiko kuvandudza kwakakosha kwe802.11a.Zvisinei, zvinounzawo matambudziko.Iyo yekufambisa kureba haina kunaka se802.11b/g;muchirevo, zviratidzo zve5G zviri nyore kuvharwa uye kubatwa nemadziro, saka kuvhara kwe802.11a hakuna kunaka se801.11b.802.11a inogona zvakare kukanganiswa, asi nekuti hapana akawanda ekukanganisa masaini ari pedyo, 802.11a kazhinji ine zvirinani kubuda.
IEEE 802.11b
IEEE 802.11b chiyero chewaya dzenzvimbo nharaunda network.Iyo inotakura frequency ndeye 2.4GHz, iyo inogona kupa akawanda ekufambisa kumhanya kwe1, 2, 5.5 uye 11Mbit/s.Dzimwe nguva inonyorwa zvisizvo seWi-Fi.Muchokwadi, Wi-Fi chiratidzo cheiyo Wi-Fi Alliance.Mucherechedzo uyu unongovimbisa kuti zvinhu zvinoshandisa zita rekutengesa zvinokwanisa kushanda pamwe chete, uye hazvina chekuita nechiyero pachacho.Muiyo 2.4-GHz ISM frequency bhendi, kune huwandu hwegumi neimwe chiteshi chine bandwidth ye22MHz, ari gumi nerimwe anopindirana frequency mabhendi.Mutsivi weIEEE 802.11b iIEEE 802.11g.
IEEE 802.11g
IEEE 802.11g yakapfuudzwa muna Chikunguru 2003. Iyo frequency yemutakuri wayo ndeye 2.4GHz (yakafanana ne802.11b), inokwana 14 frequency mabhendi, iyo yekutanga yekumhanyisa kumhanya ndeye 54Mbit / s, uye mambure ekufambisa kumhanya anenge 24.7Mbit / s (zvakafanana ne802.11a).802.11g zvishandiso zvinodzika pasi zvinoenderana ne802.11b.
Gare gare, vamwe vanogadzira router vasina waya vakagadzira mitsva mitsva yakavakirwa paIEEE 802.11g chiyero mukupindura zvinodiwa nemusika, uye vakawedzera theoretical transmisheni yekumhanya kusvika 108Mbit/s kana 125Mbit/s.
IEEE 802.11n
IEEE 802.11n chiyero chakagadziridzwa pahwaro hwe802.11-2007 neboka idzva rekushanda rakaumbwa neIEEE muna Ndira 2004 uye rakabvumidzwa zviri pamutemo munaGunyana 2009. Chiyero chacho chinowedzera tsigiro yeMIMO, ichibvumira Wireless bandwidth ye40MHz, uye theoretical. yakanyanya kutapurirana kumhanya ndeye 600Mbit/s.Panguva imwecheteyo, nekushandisa iyo space-time block code yakakurudzirwa neAlamouti, chiyero chinowedzera huwandu hwekutumira data.
IEEE 802.11ac
IEEE 802.11ac inosimudzira 802.11 isina waya komputa network network yekutaurirana standard, inoshandisa iyo 6GHz frequency bhendi (inozivikanwawo se5GHz frequency band) yewireless local area network (WLAN) kutaurirana.Muchiono, inogona kupa kanenge 1 Gigabit pasekondi bandwidth kune akawanda-station wireless local area network (WLAN) kutaurirana, kana angangoita 500 megabits pasekondi (500 Mbit/s) kune imwe chete yekubatanidza transmission bandwidth.
Iyo inotora uye inowedzera iyo mhepo interface pfungwa inotorwa kubva ku802.11n, inosanganisira: yakafara RF bandwidth (kusvika 160 MHz), yakawanda MIMO spatial hova (yakawedzera kusvika 8), MU-MIMO , Uye yakakwirira-density demodulation (modulation, kusvika ku256QAM ).Iyo inogona kutsiva IEEE 802.11n.
IEEE 802.11ax
Muna 2017, Broadcom yakatungamira mukuvhura iyo 802.11ax isina waya chip.Nekuti iyo yapfuura 802.11ad yaive yakanyanya mu60GHZ frequency bhendi, kunyangwe kumhanya kwekutapurirana kwakawedzera, kufukidzwa kwayo kwaive kushoma, uye yakava tekinoroji inoshanda yakabatsira 802.11ac.Zvinoenderana neiyo yepamutemo IEEE purojekiti, yechizvarwa chechitanhatu Wi-Fi inogara nhaka 802.11ac ndeye 802.11ax, uye mudziyo wekugovera unotsigira wakatangwa kubvira 2018.
Musiyano uri pakati pe2.4GHz uye 5GHz
Chizvarwa chekutanga chewireless transmission standard IEEE 802.11 yakazvarwa muna 1997, saka zvigadzirwa zvemagetsi zvakawanda zvinowanzo shandisa 2.4GHz isina waya frequency, senge microwave oveni, Bluetooth zvishandiso, nezvimwewo, ivo vanonyanya kana kushoma kupindira ne2.4GHz Wi-FI, saka Chiratidzo chinokanganiswa kune imwe nhanho, kungofanana nemugwagwa une zvingoro zvinodhonzwa nemabhiza, mabhasikoro nemotokari dzinomhanya panguva imwe chete, uye kumhanya kwemotokari kunowanzokanganiswa.
Iyo 5GHz WiFi inoshandisa yakakwira frequency bhendi kuunza kushoma chiteshi.Inoshandisa 22 chiteshi uye haikanganisi mumwe nemumwe.Kuenzaniswa nematanho matatu e2.4GHz, inoderedza zvakanyanya kuungana kwechiratidzo.Saka mwero wekutumira we5GHz ndeye 5GHz nekukurumidza kupfuura 2.4GHz.
Iyo 5GHz Wi-Fi frequency bhendi inoshandisa chizvarwa chechishanu 802.11ac protocol inogona kusvika pakumhanya kwe433Mbps pasi pe bandwidth ye80MHz, uye yekumhanyisa kumhanya kwe866Mbps pasi pebandwidth ye160MHz, zvichienzaniswa neiyo 2.4GHz yekutapurirana mwero wepamusoro-soro. chiyero che300Mbps Yakave yakagadziridzwa zvakanyanya.
5GHz isina kuvharwa
Nekudaro, 5GHz Wi-Fi zvakare ine zvikanganiso.Kukanganisa kwayo kuri munhambwe yekufambisa uye kugona kuyambuka zvipingamupinyi.
Nekuti Wi-Fi ndeye electromagnetic wave, nzira yayo huru yekuparadzira ndiyo yakatwasuka mutsara kuparadzira.Kana ikasangana nezvipingamupinyi, inoburitsa kupinda, kuratidzira, diffraction uye zvimwe zviitiko.Pakati pavo, kupinda mukati ndiyo huru, uye chikamu chiduku chechiratidzo chichaitika.Reflection uye diffraction.Hunhu hwemuviri hwemasaisai eredhiyo ndehwekuti kuderera kwefrequency, kureba kwewavelength, kudiki kurasikirwa panguva yekuparadzira, kupararira kwekuvhara, uye zviri nyore kunzvenga zvipingamupinyi;iyo yakakwirira frequency, iyo idiki yekuvhara uye yakanyanya kuoma.Enda kumativi zvipingamupinyi.
Naizvozvo, iyo 5G siginecha ine yakakwira frequency uye pfupi wavelength ine diki nzvimbo yekuvhara, uye kugona kupfuura nemuzvipingamupinyi hakuna kunaka se2.4GHz.
Panyaya yekufambisa kure, 2.4GHz Wi-Fi inogona kusvika pakuvhara kwepamusoro kwemamita makumi manomwe mukati, uye kuvhara kwepamusoro kwemamita mazana maviri nemakumi mashanu kunze.Uye 5GHz Wi-Fi inogona chete kusvika pakuvhara kwepamusoro kwemamita makumi matatu neshanu mukati.
Nhamba iri pazasi inoratidza kuenzanisa kwekuvhara kweEkahau Site Survey pakati pe2.4 GHz uye 5 GHz frequency mabhendi eiyo chaiyo mugadziri.Iyo yakasvibira yakasvibira pane maviri simulations inomiririra kumhanya kwe150 Mbps.Iyo dzvuku mu 2.4 GHz simulation inoratidza kumhanya kwe1 Mbps, uye iyo tsvuku mu5 GHz inoratidza kumhanya kwe6 Mbps.Sezvauri kuona, kufukidzwa kwe2.4 GHz APs zvirokwazvo yakati kurei, asi kumhanya kumucheto kwe5 GHz kufukidzwa kunokurumidza.
5 GHz uye 2.4 GHz mafrequency akasiyana, imwe neimwe ine zvakanakira Wi-Fi network, uye zvakanakira izvi zvinoenderana nemarongero aunoita network-kunyanya kana uchifunga nezve huwandu uye zvipingamupinyi (madziro, nezvimwewo) izvo chiratidzo chingada. kuvhara Yakawandisa here?
Kana iwe uchida kuvhara nzvimbo yakakura kana kuve nepamusoro pekupinda mumadziro, 2.4 GHz inova nani.Nekudaro, pasina zvipingamupinyi izvi, 5 GHz isarudzo inokurumidza.Kana isu tikabatanidza zvakanakira uye zvakaipira zveaya maviri ma frequency mabhendi uye toasanganisa kuita rimwe, nekushandisa mbiri-bhendi yekuwana nzvimbo mukutumira isina waya, tinogona kaviri bandwidth isina waya, kuderedza kukanganiswa kwekukanganisa, uye kunakidzwa kwese-kutenderera A nani Wi. -Fi network.
Nguva yekutumira: Jun-09-2021