Munyaya dzema network e broadband, matekinoroji maviri akakurumbira ave makwikwi makuru mukupa masevhisi eInternet anomhanya zvikuru: EPON neGPON. Kunyange zvazvo ese ari maviri achipa mashandiro akafanana, ane misiyano yakasiyana yakakosha kuongorora kuti unzwisise kugona kwawo uye kusarudza kuti ndeupi anonyatsokodzera zvaunoda.
EPON (Ethernet Passive Optical Network) uye GPON (Gigabit Passive Optical Network), dzese dziri nzira dzakakurumbira dzekuparadzira ma connection eInternet anomhanya zvikuru kune vashandisi vachishandisa tekinoroji ye fiber optic. Idzi chikamu chemhuri yePassive Optical Network (PON) ye tekinoroji; zvisinei, dzakasiyana mukuvaka uye mashandiro.
Musiyano mukuru uripo pakati peEPON neGPON inyaya yavo yemedia access control (MAC). EPON inoshandisa Ethernet, tekinoroji imwechete inoshandiswa mu network dzemunharaunda (LAN) uye network dzenzvimbo dzakafara (WAN). Nekushandisa Ethernet, EPON inopa kuvimbika kune masisitimu aripo eEthernet, zvichiita kuti ive sarudzo inochinjika zvikuru kune vanoshanda ne network.GPON, kune rumwe rutivi, inoshandisa tekinoroji yeAsynchronous Transfer Mode (ATM), nzira yekare asi ichiri kushandiswa zvakanyanya yekutumira data. Chakanakira kushandisa ATM mune network yeGPON ndechekuti inogona kupa masevhisi ekutamba katatu (izwi, vhidhiyo nedata) pachikuva chekuwedzera data chakapatsanurwa, nokudaro ichivimbisa kushandiswa kwakanaka kwebandwidth.
Mumwe musiyano mukuru ndewekumhanya kwekutumira data kubva pasi kusvika kumusoro. EPON inowanzo kupa kumhanya kwakaenzana, zvichireva kuti kumhanya kwekurodha nekurodha kwakafanana. Kusiyana neizvi, GPON inoshandisa nzira isina kufanana inobvumira kumhanya kwakakwira kubva pasi kusvika kumusoro uye kumhanya kwakaderera kubva kumusoro kusvika kumusoro. Iyi nzira inoita kuti GPON ive yakakodzera kune mapurogiramu anoda kumhanya kwekurodha nekukurumidza, senge kutenderera kwevhidhiyo uye kutamiswa kwemafaira makuru. Kusiyana neizvi, kumhanya kwakafanana kweEPON kunoita kuti ive yakakodzera kune mapurogiramu anovimba zvakanyanya nekutamiswa kwedata kwakaenzana, senge video conferencing uye cloud services.
Kunyangwe EPON neGPON zvese zvichitsigira zvivakwa zvakafanana zvefiber, matekinoroji avo eOLT (Optical Line Terminal) neONT (Optical Network Terminal) akasiyana. GPON inogona kutsigira huwandu hwakawanda hweONTs paOLT imwe neimwe, zvichiita kuti ive sarudzo yekutanga kana scalability iri dambudziko. EPON, kune rumwe rutivi, ine nzvimbo yakareba, zvichibvumira vashandisi venetwork kuwedzera kubatana kubva kuhofisi yepakati kana nzvimbo yekugovera. Iyi ficha inoita kuti EPON ibatsire kufukidza nzvimbo dzakakura.
Kubva pamaonero emari, EPON neGPON zvakasiyana pamari yekutanga. Nekuda kwekugadzirwa kwayo kwakavakirwa paATM, GPON inoda michina yakaoma uye inodhura. Kusiyana neizvi, EPON inoshandisa tekinoroji yeEthernet, iyo inoshandiswa zvakanyanya uye isingadhuri zvakanyanya. Zvisinei, zvakakosha kuziva kuti sezvo tekinoroji iri kuvandudzika uye vatengesi vakawanda vachipinda mumusika, musiyano wemitengo pakati pesarudzo mbiri idzi uri kudzikira zvishoma nezvishoma.
Muchidimbu, EPON neGPON isarudzo dzinoshanda dzekupa internet inokurumidza. Kushanda kweEPON neEthernet uye kumhanya kwakaenzana kunoita kuti ive inokwezva kumabhizinesi nemidziyo yekugara inoda kutapurirana data kwakaringana. Kune rumwe rutivi, kushandisa ATM neGPON uye kumhanya kusina kuenzana kunoita kuti ive sarudzo yekutanga kumapurogiramu anoda kukurumidza kudhawunirodha. Kunzwisisa musiyano uripo pakati peEPON neGPON kuchabatsira vanobata network nevashandisi vekupedzisira kuita sarudzo dzakagadzirwa neruzivo pavanenge vachisarudza tekinoroji inonyatsokodzera zvavanoda.
Nguva yekutumira: Gumiguru-19-2023