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Ç¥ÁعøÈ£ TTAE.IT-G.709.4/Y.3134.4 ±¸Ç¥ÁعøÈ£
Á¦°³Á¤ÀÏ 2021-12-08 ÃÑÆäÀÌÁö 40
ÇѱÛÇ¥Áظí OTU25 ¹× OTU50 ´Ü°Å¸® ÀÎÅÍÆäÀ̽º
¿µ¹®Ç¥Áظí OTU25 and OTU50 short-reach interfaces
Çѱ۳»¿ë¿ä¾à ÀÌ Ç¥ÁØÀº ITU-T G.709¿¡ ¸í½ÃµÈ OTUk(k=1,2,3,4)¿¡ ´ëÇØ ¸í½ÃµÈ ¸®µå-¼Ö·Î¸ó ¼ø¹æÇâ ¿À·ù Á¤Á¤(FEC) ºÎÈ£º¸´Ù ³·Àº ¿À¹öÇìµå ºñÀ²À» °®´Â ¸®µå-¼Ö·Î¸ó ¼ø¹æÇâ ¿À·ù Á¤Á¤ ºÎÈ£(OTU25-RS, OTU50-RS)¸¦ »ç¿ëÇÏ´Â 25Gb/s ¹× 50Gb/s ±¤Àü¼Û¸Á(OTN) ´Ü°Å¸® ÀÎÅÍÆäÀ̽º¸¦ ¸í½ÃÇÑ´Ù.
OTU25-RS ¹× OTU50-RS ÀÎÅÍÆäÀ̽º´Â FlexO-x-RS FEC ÄÚµ¦°ú µ¿ÀÏÇÑ ¿À¹öÇìµå ºñÀ²(~5.8%)À» »ç¿ëÇÏ´Â °æÆÇÁ¤ FEC ÄÚµ¦À» Àû¿ëÇÏ¿© ITU-T G.709¿¡ ¸í½ÃµÈ OTU25/ODU25 ¹× OTU50/ODU50 ±â´ÉÀ» º¸ÃæÇÑ´Ù. ¶ÇÇÑ ¿À¹öÇìµå ºñÀ²ÀÌ º¸´Ù ³·Àº OTU25u-RS ¹× OTU50u-RS ÀÎÅÍÆäÀ̽º¿¡ ´ëÇØ ±â¼úÇÑ´Ù.
¿µ¹®³»¿ë¿ä¾à The standard specifies 25 Gbit/s and 50 Gbit/s optical transport network (OTN) short-reach interfaces with Reed-Solomon forward error correction codes (OTU25-RS, OTU50-RS) with lower overhead percentage than the Reed-Solomon forward error correction (FEC) code specified for OTUk (k=1,2,3,4) in [ITU-T G.709].
The OTU25-RS and OTU50-RS interfaces complement the OTU25/ODU25 and OTU50/ODU50 functions specified in [ITU-T G.709], with a hard-decision FEC codec, which uses the same overhead percentage (~5.8%) as the FlexO-x-RS FEC codec. Also, the OTU25u-RS and OTU50u-RS interfaces which uses lower overhead percentage. In addition, OTU25u-RS and OTU50u-RS interfaces with lower overhead percentage are described.
±¹Á¦Ç¥ÁØ ITU-T G.709.4/Y.3134.4
°ü·ÃÆÄÀÏ TTAE.IT-G.709.4_ Y.3134.4.pdf TTAE.IT-G.709.4_ Y.3134.4.pdf            

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