{"id":943,"date":"2011-02-23T14:17:03","date_gmt":"2011-02-23T07:17:03","guid":{"rendered":"http:\/\/snt.com.vn\/blog\/?p=943"},"modified":"2017-05-09T13:55:53","modified_gmt":"2017-05-09T06:55:53","slug":"aon-va-ponph%e1%ba%a7n-1","status":"publish","type":"post","link":"https:\/\/snt.com.vn\/blog\/aon-va-ponph%e1%ba%a7n-1\/","title":{"rendered":"AON v\u00e0 PON (ph\u1ea7n 1)"},"content":{"rendered":"

\n\tI-T\u1ed5ng quan<\/strong>\n<\/p>\n

\n\tV\u1edbi nh\u1eefng \u01b0u \u0111i\u1ec3m n\u1ed5i tr\u1ed9i v\u1ec1 b\u0103ng thông và ch\u1ea5t l\u01b0\u1ee3ng \u0111\u01b0\u1eddng truy\u1ec1n so v\u1edbi cáp \u0111\u1ed3ng truy\u1ec1n th\u1ed1ng, s\u1ee3i quang \u0111ã và \u0111ang \u0103n sâu vào \u0111\u1eddi s\u1ed1ng công ngh\u1ec7. Hi\u1ec7n nay, có 2 công ngh\u1ec7 m\u1ea1ng truy\u1ec1n d\u1eabn quang \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng rãi là Active Optical Network (AON) – m\u1ea1ng quang ch\u1ee7 \u0111\u1ed9ng và Passvice Optical Network (PON) – m\u1ea1ng quang th\u1ee5 \u0111\u1ed9ng. \u0110\u1ec3 giúp các b\u1ea1n có \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 phân bi\u1ec7t t\u01b0\u01a1ng \u0111\u1ed1i v\u1ec1 2 công ngh\u1ec7 này, tôi xin post m\u1ed9t s\u1ed1 tìm hi\u1ec3u c\u1ee7a mình \u0111\u1ec3 các b\u1ea1n tham kh\u1ea3o.\n<\/p>\n

\n\tS\u1ef1 khác bi\u1ec7t ch\u1ee7 y\u1ebfu c\u1ee7a m\u1ea1ng quang ch\u1ee7 \u0111\u1ed9ng (AON) và m\u1ea1ng quang th\u1ee5 \u0111\u1ed9ng (PON) là \u1edf ch\u1ed7 PON s\u1eed d\u1ee5ng m\u1ed9t thi\u1ebft b\u1ecb chia quang th\u1ee5 \u0111\u1ed9ng: passive splitter. V\u1ec1 c\u01a1 b\u1ea3n, Splitter là m\u1ed9t l\u0103ng kính khu\u1ebfch tán tín hi\u1ec7u ánh sáng t\u1edbi khách hàng không c\u1ea7n s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb \u0111i\u1ec7n (m\u1ed9t switch quang không dùng \u0111i\u1ec7n :D). Do \u0111ó, nó có tên là th\u1ee5 \u0111\u1ed9ng.\n<\/p>\n

\n\t\"\"<\/a>\n<\/p>\n

\n\t \n<\/p>\n

\n\tII-Mô hình m\u1ea1ng truy\u1ec1n d\u1eabn<\/strong>\n<\/p>\n

\n\tM\u1ee5c tiêu c\u1ee7a c\u1ea3 AON và PON là \u0111\u1ec1u m\u1ea1ng tín hi\u1ec7u quang t\u1edbi t\u1eadn nhà khách hàng, nâng cao ch\u1ea5t l\u01b0\u1ee3ng \u0111\u01b0\u1eddng truy\u1ec1n và b\u0103ng thông.\n<\/p>\n

\n\tMô hình m\u1ea1ng<\/em>\n<\/p>\n

\"\"
Active Optical Network (AON)<\/figcaption><\/figure>\n
\"\"
Passive Optical Network (PON)<\/figcaption><\/figure>\n

\n\t \n<\/p>\n

\n\t \n<\/p>\n

\n\t \n<\/p>\n

\n\tM\u1ea1ng AON là mô hình m\u1ea1ng point-to-point, m\u1ed7i khách hàng chi\u1ebfm d\u1ee5ng 1 \u0111\u01b0\u1eddng quang xuyên su\u1ed1t không chia s\u1ebb t\u1eeb phòng máy c\u1ee7a nhà cung c\u1ea5p d\u1ecbch v\u1ee5 t\u1edbi t\u1eadn gia \u0111ình ho\u1eb7c thi\u1ebft b\u1ecb tr\u1eadp trung c\u1ee7a khách hàng.
\n\tTrong khi \u0111ó, \u0111i\u1ec3m \u0111\u1ea7u tiên c\u1ee7a m\u1ea1ng PON là OLT (Optical Line Terminal). T\u1ea1i \u0111ây, các interface 1Gbps, 10Gbps..(còn cao h\u01a1n n\u1eefa trong t\u01b0\u01a1ng lai) n\u1ed1i lên m\u1ea1ng core và các interface PON n\u1ed1i xu\u1ed1ng nhà khách hàng. T\u1edbi khách hàng, 1 passive splitter chia tín hi\u1ec7u t\u1edbi n khách hàng. Mô hình m\u1ea1ng: point-to-multipoint, có th\u1ec3 hình dung cây PON v\u1edbi m\u1ed7i khách hàng là m\u1ed9t nhánh c\u1ee7a cây. Hi\u1ec7n nay s\u1ed1 l\u01b0\u1ee3ng t\u1ed1i \u0111a khách hàng chia s\u1ebb 1 \u0111\u01b0\u1eddng truy\u1ec1n là 64, và còn ph\u1ee5 thu\u1ed9c vào suy hao c\u1ee7a \u0111\u01b0\u1eddng truy\u1ec1n và b\u1ed9 chia. <\/strong><\/span><\/span>Ki\u1ec3u m\u1ea1ng PON th\u01b0\u1eddng g\u1eb7p hi\u1ec7n nay là: Ethernet-PON (EPON), Giga-Ethernet-PON (GEPON), Gigabit-PON (GPON)…Các công ngh\u1ec7 này \u0111\u1ec1u d\u1ef1a trên chu\u1ea9n IEEE 802.3 Ethernet.
\n\tChu\u1ea9n GPON hi\u1ec7n t\u1ea1i \u0111\u1ea1t t\u1edbi t\u1ed1c \u0111\u1ed9 download 2.5Gbps và upload 1.25Gbps lên m\u1ea1ng core.\n<\/p>\n

\n\tM\u1ed9t s\u1ed1 mô hình d\u1ecbch v\u1ee5 \u1ee9ng d\u1ee5ng trong th\u1ef1c t\u1ebf:<\/em>\n<\/p>\n

\"\"<\/a>AON\n<\/p>\n
\n
\n
\n\t\t\t\"\"<\/a>
PON<\/figcaption><\/figure>\n

\n\t\t\t\t \n\t\t\t<\/p>\n

\n\t\t\t\t \n\t\t\t<\/p>\n

\n\t\t\t\t \n\t\t\t<\/p>\n

\n\t\t\t\t \n\t\t\t<\/p>\n

\n\t\t\t\tTrên \u0111ây là m\u1ed9t s\u1ed1 so sánh v\u1ec1 m\u1eb7t mô hình m\u1ea1ng c\u1ee7a 2 công ngh\u1ec7 m\u1ea1ng quang th\u1ee5 \u0111\u1ed9ng và ch\u1ee7 \u0111\u1ed9ng.\n\t\t\t<\/p>\n

\n\t\t\t\tTrong bài vi\u1ebft ti\u1ebfp theo, tôi s\u1ebd \u0111\u01b0a ra nh\u1eefng so sánh v\u1ec1 m\u1ed9t s\u1ed1 khía c\u1ea1nh khác gi\u1eefa hai công ngh\u1ec7 này nh\u01b0: chi phí \u0111\u1ea7u t\u01b0 kinh t\u1ebf, hi\u1ec7u qu\u1ea3 c\u1ea5p phát b\u0103ng thông, \u0111\u01b0\u1eddng truy\u1ec1n…\n\t\t\t<\/p>\n<\/dt>\n<\/dl>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

I-T\u1ed5ng quan V\u1edbi nh\u1eefng \u01b0u \u0111i\u1ec3m n\u1ed5i tr\u1ed9i v\u1ec1 b\u0103ng thông và ch\u1ea5t l\u01b0\u1ee3ng \u0111\u01b0\u1eddng truy\u1ec1n so v\u1edbi cáp \u0111\u1ed3ng<\/p>\n","protected":false},"author":9,"featured_media":5296,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[74,1],"tags":[391,235,392],"yoast_head":"\nAON v\u00e0 PON (ph\u1ea7n 1) - Blog SNT - C\u00f4ng Ty TNHH Si\u00eau Nh\u1eadt Thanh - Sao Nhanh Th\u1ebf<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/snt.com.vn\/blog\/aon-va-ponph\u1ea7n-1\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"AON v\u00e0 PON (ph\u1ea7n 1) - Blog SNT - C\u00f4ng Ty TNHH Si\u00eau Nh\u1eadt Thanh - Sao Nhanh Th\u1ebf\" \/>\n<meta property=\"og:description\" content=\"I-T\u1ed5ng quan V\u1edbi nh\u1eefng \u01b0u \u0111i\u1ec3m n\u1ed5i tr\u1ed9i v\u1ec1 b\u0103ng thông và ch\u1ea5t l\u01b0\u1ee3ng \u0111\u01b0\u1eddng truy\u1ec1n so v\u1edbi cáp \u0111\u1ed3ng\" \/>\n<meta property=\"og:url\" content=\"https:\/\/snt.com.vn\/blog\/aon-va-ponph\u1ea7n-1\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog SNT - 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