Mundima yebroadband network, matekinoroji maviri ane mukurumbira akave makwikwi makuru mukupa mavhisi makuru eInternet: EPON neGPON. Nepo ese ari maviri achipa mashandiro akafanana, ane mutsauko wakasiyana wakakodzera kuongorora kuti unzwisise kugona kwavo uye sarudza kuti ndeipi inonyatsoenderana nezvido zvako.
EPON (Ethernet Passive Optical Network) uye GPON (Gigabit Passive Optical Network), nzira mbiri dzakakurumbira dzekugovera kukurumidza-kumhanya kweInternet kuvashandisi vachishandisa fiber optic tekinoroji. Ivo chikamu chePassive Optical Network (PON) mhuri yetekinoroji; zvisinei, ivo vanosiyana mukuvaka uye kushanda.
Musiyano mukuru uripo pakati peEPON neGPON idanho ravo rekuwana midhiya (MAC) layer. EPON inoshandisa Ethernet, tekinoroji imwechete inoshandiswa mumanetiweki emunharaunda (LAN) uye netiweki yenzvimbo yakakura (WAN). Nekurebesa Ethernet, EPON inopa kuenderana neiripo Ethernet-based masisitimu, zvichiita kuti ive yakanyanya kuchinjika sarudzo kunetiweki vanoshanda.GPON, kune rumwe rutivi, inoshandisa Asynchronous Transfer Mode (ATM) tekinoroji, yekare asi ichiri inowanzoshandiswa nzira yekufambisa data. Kubatsira kwekushandisa ATM mune network yeGPON ndeyekuti inogona kupa katatu kutamba masevhisi (izwi, vhidhiyo uye data) pane yakakamukana multiplexing chikuva, nokudaro kuve nechokwadi chekushandiswa kwakanaka kwebandwidth.
Mumwe mutsauko wakakosha ndeyekudzika uye kumusoro kwepamusoro kutapurirana kumhanya. EPON inowanzopa symmetrical sipidhi, zvichireva kuti kudhawunirodha nekumhanyisa kumhanya kwakafanana. Kusiyana neizvi, GPON inoshandisa asymmetric setup inobvumira kumhanya kwepamusoro kudzika kwerwizi uye kudzika kukwira kumusoro. Ichi chimiro chinoita kuti GPON ive yakanaka kune maapplication anoda kukurumidza kurodha kumhanya, senge vhidhiyo kutenderera uye hombe faira kutamiswa. Kusiyana neizvi, kumhanya kwakaenzanirana kweEPON kunoita kuti inyatsokodzera maapplication anovimba zvakanyanya nesymmetrical data transmission, senge video conferencing uye Cloud services.
Kunyangwe zvese EPON neGPON zvichitsigira mafaibha mamwe chete, matekinoroji avo eOLT (Optical Line Terminal) neONT (Optical Network Terminal) akasiyana. GPON inogona kutsigira nhamba yakakura yeONT paOLT, zvichiita kuti ive sarudzo yekutanga kana scalability iri kunetseka. EPON, kune rumwe rutivi, ine hurefu hwakareba, inobvumira vashandisi venetiweki kuwedzera kubatana kubva kuhofisi yepakati kana nzvimbo yekugovera. Iyi ficha inoita kuti EPON ibatsire kubata nzvimbo dzakakura dzenzvimbo.
Kubva pamaonero emutengo, EPON neGPON zvinosiyana maererano nemari yekutanga yekuseta. Nekuda kweATM-based architecture, GPON inoda zvakanyanya kuoma uye zvinodhura michina. Kusiyana neizvi, EPON inoshandisa tekinoroji yeEthernet, inogamuchirwa nevakawanda uye isingadhure. Nekudaro, zvakakosha kucherechedza kuti sezvo tekinoroji inovandudza uye vatengesi vazhinji vachipinda mumusika, gaka remutengo pakati pezviviri sarudzo riri kudzikira zvishoma nezvishoma.
Muchidimbu, ese EPON neGPON isarudzo dzinogoneka dzekupa yakakwirira-kumhanya yeInternet yekubatanidza. Kuenderana kweEPON neEthernet uye symmetrical kumhanya kunoita kuti itaridzike kune bhizinesi uye zvekugara zvikumbiro zvinoda kufambisa data. Kune rimwe divi, kushandiswa kweGPON kweATM uye kumhanya kweasymmetric kunoita kuti ive sarudzo yekutanga kune maapplication anoda kukurumidza kurodha kumhanya. Kunzwisisa mutsauko uripo pakati peEPON neGPON kuchabatsira vashandisi venetiweki uye vashandisi vekupedzisira kuita sarudzo dzine ruzivo pakusarudza tekinoroji inonyatsoenderana nezvavanoda.
Nguva yekutumira: Oct-19-2023