Nā hiʻohiʻona noiʻi OTN

OTN a me PTN
Pono e ʻōlelo ʻia ʻo OTN a me PTN ʻelua mau ʻenehana ʻokoʻa loa, a me ka ʻōlelo ʻenehana, pono e ʻōlelo ʻia ʻaʻohe pilina.
ʻO ka OTN kahi ʻoihana halihali optical, i hoʻomohala ʻia mai ka ʻenehana mahele o ka nalu.Hoʻohui nui ia i ka hana hoʻololi optical naʻauao.Hiki iā ia ke hoʻomaopopo i ka crossover optical ma o ka hoʻonohonoho ʻana i ka ʻikepili me ka ʻole o nā jumpers fiber manual.Hoʻomaikaʻi maikaʻi ʻia ka mālama ʻana a me ka maʻalahi o ka ʻoihana WDM.I ka manawa like, ke ulu mālie nei ka pūnaewele OTN hou i ka bandwidth ʻoi aku ka nui, nā ʻāpana nui, a me ka pale ikaika.​​

ʻO ka PTN kahi pūnaewele halihali packet, ʻo ia ka huahana o ka hoʻohui ʻana o ka ʻoihana halihali a me ka ʻikepili ʻikepili.ʻO ka protocol nui ʻo TMPLS, he liʻiliʻi ka liʻiliʻi o nā papa IP a ʻoi aku ka nui o nā ʻeke ma mua o nā polokalamu pūnaewele.Hiki iā ia ke hoʻomaopopo i ka pūnaewele apo a me ka pale.ʻO ia kahi pūnaewele ʻikepili papa lawe (ʻaʻole hiki i nā ʻikepili kuʻuna ke hoʻokō i nā koi o ka papa lawe).ʻOi aku ka liʻiliʻi o ka bandwidth hoʻoili o PTN ma mua o ka OTN.ʻO ka mea maʻamau, ʻo ka bandwidth nui o ka hui PTN ʻo 10G, ʻo OTN hoʻokahi nalu he 10G, hiki i ke ala hui ke hiki i 400G-1600G, a hiki i ka ʻenehana hou ke hiki i ka nalu hoʻokahi 40G.ʻO ia ka iwi kuamoʻo o ka pūnaewele hoʻouna.

OTN a me SDH, WDM

Hoʻokumu ʻia ʻo OTN ma ka ʻenehana WDM, hoʻokomo ʻia ka mana ikaika, mālama, hoʻokele a me ka hāʻawi ʻana (OAM) o SDH ma ke kumu o ka mana hoʻoili nui.Hoʻohana ʻo OTN i ka FEC maʻamau i hoʻopili ʻia, waiwai i ka mālama ʻana a me ka hoʻokele ʻana ma luna, a ua kūpono ia no ke komo ʻana i ka lawelawe nui-granularity FEC error correction coding, e hoʻomaikaʻi ana i ka hana hewa bit a hoʻonui i ka lōʻihi o ka hoʻouna ʻana.

Nā hiʻohiʻona noiʻi OTN

E hāʻawi ka OTN-based intelligent optical network i kahi hopena kūpono no ka lawe ʻana i nā lawelawe broadband nui-granularity.ʻO ka ʻoihana kaʻa kaʻa nui i haku ʻia me ka ʻoihana kaʻa kaʻa ma waena o ka panalāʻau, ka ʻoihana kaʻa kaʻa intra-provincial, a me ka ʻoihana kaʻa metro (local).Hiki ke hoʻokaʻawale hou ʻia ka ʻupena kaʻa metro (local) i kahi papa kumu, kahi papa hoʻohui a me kahi papa komo.Hoʻohālikelike ʻia me SDH, ʻo ka pono nui loa o ka ʻenehana OTN ʻo ka hāʻawi ʻana i ka hoʻonohonoho a me ka hoʻouna ʻana i ka bandwidth granularity nui.No laila, inā paha e hoʻohana i ka ʻenehana OTN ma nā ʻāpana pūnaewele ʻokoʻa e pili ana i ka nui o ka nui o ka bandwidth granularity lawelawe hoʻonohonoho nui.E like me ke kūlana o ka pūnaewele i kēia manawa, ʻo nā ʻāpana nui o ka papa kuhikuhi papa o ka ʻupena hoʻouna ʻokoʻa ma waena o ka panalāʻau, ka pūnaewele hoʻouna i loko o ka panalāʻau a me ka pūnaewele hoʻouna metro (local) ma ke ʻano he Gb/s a ma luna.ʻOi aku ka maikaʻi o ka ʻenehana OTN e kūkulu.
No ka hōʻuluʻulu ʻana a me ke kiʻekiʻe o ka ʻoihana kaʻa kaʻa nui (local), i ka wā i hiki ai nā mea hoʻonohonoho nui i ka pae Gb/s, hiki ke kūkulu ʻia ka ʻenehana OTN.

1. National trunk optical transport network Me ka IP-based network and services, ka hoʻomohala ʻana i nā lawelawe hou a me ka piʻi wikiwiki ʻana o nā mea hoʻohana broadband, ua piʻi nui ka huakaʻi IP ma ka ʻōpala aupuni, a ua piʻi nui ka noi bandwidth i kēlā me kēia makahiki. .Hāʻawi ka laina ʻōpala mokuʻāina WDM i nā lawelawe mamao PSTN/2G, NGN/3G mau lawelawe lōʻihi, a me nā lawelawe laina laina ʻāina pūnaewele.Ma muli o ka nui o nā lawelawe lawe, ʻo WDM nā laina ʻōpala o ka mokuʻāina he pono koʻikoʻi no ka pale ʻana i nā lawelawe lawe.Ma hope o ka hoʻohana ʻana i ka ʻenehana OTN, hiki i ka mea lawe o ka laina laina IP ma luna o OTN ke ʻike i ka pale SNCP, SDH-like ring network protection, MESH network protection and other network protection systems.Hoemi nui.

2. Intra-provincial/regional trunk optical transport network ʻO ka intra-provincial/regional backbone routers lawe i nā lawelawe ma waena o nā keʻena lōʻihi (NGN / 3G / IPTV / laina kūikawā no nā mea kūʻai nui, etc.).Ma o ke kūkulu ʻia ʻana o ka ʻāpana o ka ʻāpana kūloko / ʻāpana OTN optical transmission network, hiki ke hoʻokō ʻia ka hoʻouna palekana a hilinaʻi o GE / 10GE, 2.5G / 10GPOS nā lawelawe nui-granularity;hiki ke hoʻokumu i nā pūnaewele apo, nā pūnaewele apo paʻakikī, a me nā pūnaewele MESH;hiki ke hoʻonui i ka pūnaewele ma ka noi;Hoʻomaopopo i ka hoʻonohonoho ʻana a me ka hoʻomaʻamaʻa ʻana i nā lawelawe o ka nalu nalu / sub-length, a hāʻawi i nā lawelawe laina i hoʻolaʻa ʻia no nā mea kūʻai aku;ʻike pū i ka lawe ʻana i nā lawelawe ʻē aʻe e like me STM-1/4/16/64SDH, ATM, FE, DVB, HDTV, ANY, etc.

3. Metro/local optical transport network Ma ka papa kumu o ka metro network, hiki i ka OTN optical transport network ke hoʻomaopopo i nā lawelawe broadband nui ma waena o ka metro aggregation router, ka pūnaewele kūloko C4 (regional/county center) aggregation router a me ka metropolitan. mea hoʻolale kumu.hoʻouna.ʻO GE/10GE ka mea ma luna o ke alalai, a he 2.5G/10GPOS paha.ʻO ka OTN kaʻa kaʻa uila ma ka metro core l