Muaj ntau lub tswv yim thiab cov txheej txheem koom nrog hauv wireless networks. Txhawm rau muab lub tswv yim zoo rau txhua tus, kuv yuav piav qhia txog kev faib tawm.
1. Raws li qhov sib txawv network kev pab them nqi, wireless networks yuav muab faib ua:
"WWAN" sawv cev rau "wireless wide area network.
"WLAN" sawv cev rau Wireless Local Area Network.
"WMAN" sawv cev rau Wireless Metropolitan Area Network.
"WPAN" stands rau wireless tus kheej cheeb tsam network.
Kev sib raug zoo yog qhia hauv daim duab hauv qab no:
Ib lub wireless hauv cheeb tsam network (WLAN) yog lub network uas siv cov cuab yeej sib txuas lus wireless los txuas cov khoos phis tawj sib txawv los tsim cov kab ke sib txuas uas tuaj yeem sib txuas lus, xa cov ntaub ntawv, thiab faib cov peev txheej. IEEE 802.11 tus qauv rau wireless hauv cheeb tsam network tso cai rau tib neeg txuas wirelessly rau ib cheeb tsam hauv cheeb tsam siv 2.4GHz lossis 5GHz xov tooj cua zaus band hauv ISM band, uas tej zaum yuav tsis raug tso cai.
Nta: Nws txhawb ntau tus neeg siv khoom siv, muaj kev hloov pauv tau yooj yim thiab txav tau yooj yim, thiab tsis txwv los ntawm ib puag ncig wired.
Daim ntawv thov ntau yam: dav heev, xws li kev lag luam, tsev kho mob, khw, factories, tsev kawm ntawv thiab tsev neeg.
Lub luag haujlwm tseem ceeb ntawm Wireless Metropolitan Area Network yog txuas mus rau lub nraub qaum thiab muab kev pabcuam rau cov neeg siv. Piv txwv li, wideband WMAN, sawv cev los ntawm IEEE 802.16 series qauv, feem ntau yog siv rau kev sib txuas hauv zos multipoint. Lub wireless cheeb tsam cheeb tsam network technology kuj hu ua "WiMAX Technology" nyob rau hauv kev ua lag luam. Ministry of Information Industry npaj ob zaus bands ntawm 3.5 GHz (3400-3430mhz, 3500-3530mhz) thiab 5.8 GHz (5725-5850mhz) raws li lub siab zaus bands rau wireless nkag mus rau hauv nroog cheeb tsam network.
Ib lub wireless wide area network (WWAN) yog ib txoj kev sib txuas lus uas siv wireless networks los txuas rau hauv cheeb tsam network (LANs) dhau qhov kev ncua deb ntawm lub cev. Nws yog tsuas yog siv los ntawm cov tswv lag luam rau kev them nyiaj wireless. Tus qauv siv yog IEEE 802.20.
Cov saum toj no yog qhov kev paub piav qhia ntawm "kev faib tawm ntawm wireless networks" coj los ntawmShenzhen HDV Phoelectron Technology Co., Ltd. vam tias tsab xov xwm no tuaj yeem pab koj nce koj txoj kev paub. Dhau li ntawm tsab xov xwm no yog tias koj tab tom nrhiav rau lub tuam txhab kev sib txuas lus zoo fiber ntau cov khoom lag luam koj tuaj yeem xav txogtxog peb.
Tnws cov khoom sib txuas lus tsim los ntawm lub tuam txhab npog:
Module:optical fiber modules, Ethernet modules, optical fiber ntau transceiver modules, optical fiber nkag modules, SSFP optical modules, thiabSFP optical fibers, lwm.
ONUqeb:EPON UA, AC ONU, Optical fiber ntau ONU, CATV UA, GPON UA, XOV TOOJ, lwm.
OLTchav kawm:OLT hloov, GPON OLT, PEB OLT, kev sib txuas lusOLT, lwm.
Cov khoom saum toj no tuaj yeem txhawb nqa cov xwm txheej sib txawv. Rau cov khoom lag luam saum toj no, ib pab neeg ua haujlwm R & D muaj zog tau ua ke los muab kev txhawb nqa rau cov neeg siv khoom, thiab pab pawg ua lag luam xav tau zoo tuaj yeem muab cov kev pabcuam zoo rau cov neeg siv khoom thaum ntxov.Kev sab laj thiab tom qab ntawd ua haujlwm.