I kēia manawa, ma ke ʻano o ka ʻenehana ʻenehana ʻike fiber access, ua hoʻololi mālie ʻia ke komo ʻana i ka narrowband e ke ala ākea, a ma hope loa ua loaʻa ka fiber home.ʻO ka fiber optical fiber o ka pūnaewele hiki ke lilo i mea hikiʻole, aʻo kaʻenehana PON e lilo i ka piko o kaʻenehana o ka pūnaewele hiki i ka wā e hiki mai ana ma muli o kāna mau lawelawe he nui, haʻahaʻa haʻahaʻa a mālama maʻalahi.
He aha ke ʻano o ka fiber access network?
ʻO ka ʻupena hoʻopaʻa hiʻohiʻona e pili ana i kahi pūnaewele hiki ke loaʻa kahi mea hoʻouna i kahi fiber optical.Hiki ke hoʻokaʻawale ʻia nā ʻenehana ʻike fiber Optical i ʻelua mau ʻāpana: nā ʻenehana optical hana (AON, Active Optical Network) a me nā ʻoihana ʻike passive (PON, Passive Optical Network).
Hiki ke hoʻokaʻawale ʻia ka ʻenehana optical hana i AON ma muli o SDH a me AON ma muli o PDH;
Hiki ke hoʻokaʻawale ʻia nā ʻupena optical passive i PON narrowband a me PON broadband.
He aha ke kuleana o ka ʻupena komo i ke kūkulu ʻana i ka ʻoihana pūnaewele?
Hoʻokumu ʻia ka ʻenehana ʻike me kahi ʻupena iwi kuamoʻo nui, kahi ʻoihana metropolitan area, kahi pūnaewele komo, a me kahi pūnaewele hale kūʻai.Aia ka pūnaewele komo ma ke alahaka o ka ʻoihana metropolitan area / network backbone.
I kēia manawa, ke holomua nei ka ʻepekema a me ka ʻenehana, a ke hana mau nei ka nui o nā faila uila.Me ka hoʻokele waiwai o ka honua a me ka wikiwiki o ka ʻike pili kanaka, ua hoʻolaha nui ʻia ka Internet, ua ulu ikaika nā lawelawe ʻikepili, a ua hoʻomau nā ʻano o nā lawelawe kelepona.ʻAno ʻoihana.Ua lilo ka narrowband access network i bottleneck e kaupalena ana i ka hoʻomohala ʻana o ka pūnaewele i broadband.Loaʻa i ka mākeke pūnaewele komo ka mana nui, a ke puka mau nei nā ʻenehana hou e hoʻokō i nā pono o nā mea hoʻohana.ʻO ka pūnaewele komo ke kumu a me ke kī i ka hoʻomohala ʻana i nā ʻōnaehana ʻike aupuni.Ua lilo ka ʻenehana komo pūnaewele i ka piko a me ka hotspot waiwai o nā keʻena noiʻi, nā mea kūʻai aku kamaʻilio, nā hui kelepona a me nā keʻena hana.
Pono o PON
1. Hiki ke hāʻawi i nā mea hiki ke hoʻouna i ka broadband ākea a me ke kumu kūʻai haʻahaʻa.
2. Ke hoʻohālikelikeʻia me ka pūnaewele optical hana, ua haʻahaʻa kona hoʻokomoʻana, ke komisina a me ka mālamaʻana i nā kumukūʻai, aʻoi aku ka hilinaʻi a me ka paʻa o ka pūnaewele, no laila ke hoʻohana nei ka pūnaewele i ka nui o nā pūnaewele PON.
3. Ma muli o ka hoʻohana ʻana o PON i ka mode point-to-multipoint access mode, ʻo ke kumukūʻai o ka hoʻokumu ʻana i ka fiber optical ma waena o ke keʻena kikowaena a me nā mea hoʻohana e kau ʻia e nā mea hoʻohana, hiki ke hoʻonui i ka hoʻihoʻi ʻana i ka hoʻopukapuka ʻana i ke kūkulu ʻana i ka pūnaewele.Ke hoʻohālikelike ʻia me ke ʻano o ka hoʻonohonoho ʻana i ka fiber optical end-to-end no kēlā me kēia mea hoʻohana, ʻoi aku ka liʻiliʻi o ka nui o nā lako PON e hoʻomaikaʻi ai i nā lawelawe no ka helu like o nā mea kūʻai aku a liʻiliʻi ka liʻiliʻi o ke keʻena kikowaena.
4. Kākoʻo ʻo PON i nā lawelawe kuʻuna ʻelua (ʻoihana kelepona maʻamau POTS, TV analog) a me nā lawelawe broadband (hoʻouna leo IP, IPTV, ke komo pūnaewele ākea, etc.).
Kākoʻo ʻo 5.PON i nā mea hoʻohana āpau (e hoʻohana ana i ka POTS, analog TV a me nā lawelawe ʻikepili) a me nā mea hoʻohana kālepa he nui (e hoʻohana ana i nā lawelawe T1 / E1 a me Ethernet) e kaʻana like i kahi pūnaewele hiki (me ka papa kino a me ka papa protocol) me ka ʻole e hoʻohana i nā ʻokoʻa. Hāʻawi ka loaʻa ʻana i ka pūnaewele i nā lawelawe no lākou, no laila e hōʻemi ana i ka nui o nā pūnaewele hiki ke hoʻopuehu.