802.11b ndiyo yekutanga yeWi-Fi wireless network yekukurukurirana teknolojia yekuwana kubvumirana kukuru nevatengi. Icho ndechechimwe chezvikoro zvakawanda zveEgree of Electrical and Electronics Engineers (IEEE) mumhuri ye802.11 . Zvigadzirwa zve 802.11b zvakaitwa zvisina kugadziriswa uye zvakasunungurwa nevekare 802.11g uye 802.11n Wi-Fi mitemo.
Nhoroondo ye 802.11b
Kusvikira pakati pe1980, kushandiswa kweredhiyo nguva yakawanda inotenderera ne 2.4 GHz yaitongwa nemasangano ehurumende pasi rose. IU.S. Federal Communications Communication (FCC) yakatanga shanduko kuregeredza boka iri, raimbova rakananga kune izvo zvinonzi ISM (industrial, scientific, and medical) equipment. Chinangwa chavo chaiva kukurudzira kusimbiswa kwezvigadzirwa zvemabhizimisi.
Kuvaka mashandisirwo emagetsi asingasviki pamwero mukuru unoda humwe hutano hwehutano hwevatengesi pakati pevatengesi. Ndiyo iyo IEEE yakapinda uye yakapa boka rayo 802.11 rekushandira kuti rigadzirise sarudzo, iyo yakazozivikanwa seWi-Fi. Iyo yekutanga 802.11 Wi-Fi yakasarudzwa, yakabudiswa muna 1997, yakanga ine mikana yakawanda yezvigadzirwa zvekugadzirisa iyo inobatsira zvikuru, asi yakaratidza nzira yekusimbiswa kwechizvarwa chechipiri chinonzi 802.11b.
802.11b (mazuva ano anonzi "B" kwenguva pfupi) akabatsira kutanga yekutanga ye wireless home networking. Nehurukuro yaro muna 1999, vanogadzira ma router broadband seLizysys vakatanga kutengesa nzira dzeWi-Fi pamwe chete nemafuta ekutengesa Ethernet avakanga vachigadzira kare. Kunyange zvazvo zvigadzirwa zvekare zvingave zvakaoma kugadzirisa nekugadzirisa, zviri nyore uye zvingave zvakaratidzwa ne 802.11b yakachinja Wi-Fi mukubudirira kukuru kwebhizimisi.
802.11b Kubudirira
802.11b kushamwaridzana kunotsigira zvakanyanyisa kukosha kwedhigiri ye 11 Mbps . Kunyange zvazvo yakafanana nechetsika Ethernet (10 Mbps), B inoita zvishoma nezvishoma kupfuura zvese zvitsva zveWin-Fi uye Ethernet technologies. Nokuda kwezvimwe, ona - Chii Chaicho Chikurumidza Chaicho che 802.11b Wi-Fi Network ?
802.11b uye kushamwaridzana kusina
Kutumira mune zvisingabhadharwi 2.4 GHz frequency range, vanotumira 802.11b vanogona kusangana nevanopindwa neredhiyo kubva kune dzimwe mishonga dzisina mishonga dzisina mhepo dzisina tambo dzisina mhepo, mavheni ewa microwave, masuo emagaraji uye vana vanoona.
802.11 uye kuwirirana kushure
Kunyange iyo itsva yeWin-Fi mitero inotsigira 802.11b. Izvozvo ndezvokuti chizvarwa chega chega chemashoko makuru e-Wi-Fi protocol akachengetedza kusangana kwekudzokera shure nemarudzi ose apfuura: Somuenzaniso,
- 802.11g mairaira uye kuwanikidzwa kwepfungwa zvinotsigira G uye B maklayi - anonzi 802.11b / g mitambo
- 802.11n ma routers uye manotsi ekutsigira N, G uye B mitsva - 802.11b / g / n mitambo
- 802.11ac ma router uye kuwanika kwepfungwa kutsigira AC, N, G neB B - 802.11b / g / n / ac networks
Izvi zvakagadziriswa shure zvinoratidza kuti zvakakosha kuti kubudirira kweWi-Fi, sevatengi uye mabhizimusi vanogona kuwedzera zvishandiso zvitsva kumaketani avo uye zvishoma nezvishoma vanogadzira zvigadzirwa zvekare zvakakanganisika.