ÎÊÌâÒÑ¿ªÆô
(ÆÕͨÎÊÌâ)
FTTHºÍFTTBµ½µ×ÓÐʲô²»Í¬
FTTHºÍFTTBµ½µ×ÓÐʲô²»Í¬£¬ÔÚ´«ÊäÉÏÃæ¸÷ÓÐÄÄЩÓÅÊÆ£¿£¿
ÌáÎÊÕß: jsliuyanfu ÌáÎÊʱ¼ä: 2012-05-25
• ÓÐFTTHµÄÉè¼ÆͼֽÂð 2018-04-02
• GPONONUSFPSTICKFORFTTH 2017-10-15
• FTTH¹ÊÕÏ´¦Àí»ã×Ü 2016-11-07
• FTTHÊÕ¹â¶àÉÙ 2016-01-18
• µçÐÅFTTH¿¢¹¤×ÊÁÏ 2013-04-24
• FTTH¹âÁ´Â·ÖУ¬¼ÆËã¹â¹¦ÂÊË¥¼õʱ£¬»î½ÓÍ·ÊýÁ¿Ôõô¼ÆË㣿 2013-02-24
• FTTHµÄÎÊÌâ¹âÏ˵ÄÎÊÌâ 2012-11-06
• FTTHģʽÏçÕò¿í´øÉè¼ÆÒªµã 2012-09-07
• GPONONUSFPSTICKFORFTTH 2017-10-15
• FTTH¹ÊÕÏ´¦Àí»ã×Ü 2016-11-07
• FTTHÊÕ¹â¶àÉÙ 2016-01-18
• µçÐÅFTTH¿¢¹¤×ÊÁÏ 2013-04-24
• FTTH¹âÁ´Â·ÖУ¬¼ÆËã¹â¹¦ÂÊË¥¼õʱ£¬»î½ÓÍ·ÊýÁ¿Ôõô¼ÆË㣿 2013-02-24
• FTTHµÄÎÊÌâ¹âÏ˵ÄÎÊÌâ 2012-11-06
• FTTHģʽÏçÕò¿í´øÉè¼ÆÒªµã 2012-09-07
ÎÊÌâ´ð°¸
( 5 )
FTTHºÍFTTBÇø±ð£»
FTTBµÄÈ«³ÆÊÇFiber To The Building£¬Òâ˼ÊÇ¡°¹âÏ˵½Â¥¡±¡£FTTB²ÉÓõÄÊÇרÏß½ÓÈ룬ÎÞÐ貦ºÅ¡£Ëü²ÉÓùâÏËÖ±½Óͨµ½´óÂ¥£¬ÔÙÓÃË«½ÊÏß½Óµ½Óû§µÄ·½Ê½£¬ÊôÓÚרÏß½ÓÈ룬Óû§ÎÞÐ벦ºÅÉÏÍø£¬¿ª»ú¼´¿É½øÈ뻥ÁªÍø¡£FTTBʹÓõĽÓÈëÉ豸ÊÇÄÚÖÃʽÒÔÌ«Íø¿¨£¬Ã¿¸öÓû§¾ù¿É¶ÀÏíË«Ïò10M´ø¿í
FTTH¾ÍÊǹâÏ˽øÈëÿ¼Òÿ»§,ÌṩµÄ´ø¿íÊÇADSLµÄ100±¶¡£¹âÏ˾ßÓÐÊÙÃü³¤,ÎÞ¸ÉÈÅ, ´ø¿í¼¸ºõÎÞÏÞµÄÓŵã,ÊÇÍÏß¼¼ÊõËùÎÞ·¨±ÈÄâµÄ¡£FTTHÊÇʵÏÖ»°Òô¡¢ÊÓƵ¡¢Êý¾ÝÈýÍøºÏÒ»×îºÃµÄ½â¾ö·½°¸¡£FTTHµÄÆÕ¼°½«³¹µ×¸Ä±äÎÒÃǵÄÉú»î...
Ïêϸ½éÉÜ
˵µ½FTTH£¬Ê×ÏȾͱØÐë̸µ½¹âÏ˽ÓÈë¡£¹âÏ˽ÓÈëÊÇÖ¸¾Ö¶ËÓëÓû§Ö®¼äÍêÈ«ÒÔ¹âÏË×÷Ϊ´«ÊäýÌå¡£¹âÏ˽ÓÈë¿ÉÒÔ·ÖΪÓÐÔ´¹â½ÓÈëºÍÎÞÔ´¹â½ÓÈë¡£¹âÏËÓû§ÍøµÄÖ÷Òª¼¼ÊõÊǹⲨ´«Êä¼¼Êõ¡£Ä¿Ç°¹âÏË´«ÊäµÄ¸´Óü¼Êõ·¢Õ¹Ï൱¿ì£¬¶àÊýÒÑ´¦ÓÚʵÓû¯¡£¸ù¾Ý¹âÏËÉîÈëÓû§µÄ³Ì¶È£¬¿É·ÖΪFTTC¡¢FTTZ¡¢FTTO¡¢FTTF¡¢FTTHµÈ¡£
FTTH(Fiber To The Home )£¬¹ËÃû˼Òå¾ÍÊÇÒ»¸ù¹âÏËÖ±½Óµ½¼ÒÍ¥¡£¾ßÌå˵£¬FTTHÊÇÖ¸½«¹âÍøÂçµ¥Ôª(ONU)°²×°ÔÚס¼ÒÓû§»òÆóÒµÓû§´¦£¬Êǹâ½ÓÈëϵÁÐÖгýFTTD(¹âÏ˵½×ÀÃæ)Íâ×î¿¿½üÓû§µÄ¹â½ÓÈëÍøÓ¦ÓÃÀàÐÍ¡£FTTHµÄÏÔÖø¼¼ÊõÌصãÊDz»µ«Ìṩ¸ü´óµÄ´ø¿í£¬¶øÇÒÔöÇ¿ÁËÍøÂç¶ÔÊý¾Ý¸ñʽ¡¢ËÙÂÊ¡¢²¨³¤ºÍÐÒéµÄ͸Ã÷ÐÔ£¬·Å¿íÁ˶Ի·¾³Ìõ¼þºÍ¹©µçµÈÒªÇ󣬼ò»¯ÁËά»¤ºÍ°²×°¡£
FTTHµÄÓÅÊÆÖ÷ÒªÊÇÓÐ5µã£ºµÚÒ»£¬ËüÊÇÎÞÔ´ÍøÂ磬´Ó¾Ö¶Ëµ½Óû§£¬Öмä»ù±¾ÉÏ¿ÉÒÔ×öµ½ÎÞÔ´£»µÚ¶þ£¬ËüµÄ´ø¿íÊDZȽϿíµÄ£¬³¤¾àÀëÕýºÃ·ûºÏÔËÓªÉ̵Ĵó¹æÄ£ÔËÓ÷½Ê½£»µÚÈý£¬ÒòΪËüÊÇÔÚ¹âÏËÉϳÐÔصÄÒµÎñ£¬ËùÒÔ²¢Ã»ÓÐʲôÎÊÌ⣻µÚËÄ£¬ÓÉÓÚËüµÄ´ø¿í±È½Ï¿í£¬Ö§³ÖµÄÐÒé±È½ÏÁé»î£»µÚÎ壬Ëæ׿¼ÊõµÄ·¢Õ¹£¬°üÀ¨µã¶Ôµã¡¢1.25GºÍFTTHµÄ·½Ê½¶¼Öƶ¨Á˱ȽÏÍêÉƵŦÄÜ¡£
ÔÚ¹â½ÓÈë¼Ò×壬»¹ÓÐFTTB(Fiber To The Building)¹âÏ˵½´óÂ¥£¬FTTC(Fiber To The Curb)¹âÏ˵½Â·±ß£¬FTTSA(Fiber To The Service Area)¹âÏ˵½·þÎñÇøµÈµÈ¡£
FTTB£¨Fiber To The Building£©£ºÒâ¼´¹âÏ˵½Â¥£¬ÊÇÒ»ÖÖ»ùÓÚÓÅ»¯¸ßËÙ¹âÏ˾ÖÓòÍø¼¼ÊõµÄ¿í´ø½ÓÈ뷽ʽ£¬²ÉÓùâÏ˵½Â¥¡¢ÍøÏßµ½»§µÄ·½Ê½ÊµÏÖÓû§µÄ¿í´ø½ÓÈ룬ÎÒÃdzÆΪFTTB+LANµÄ¿í´ø½ÓÈëÍø£¨¼ò³ÆFTTB£©£¬ÕâÊÇÒ»ÖÖ×îºÏÀí¡¢×îʵÓá¢×î¾¼ÃÓÐЧµÄ¿í´ø½ÓÈë·½·¨¡£ FTTB¿í´ø½ÓÈëÊDzÉÓõ¥Ä£¹âÏ˸ßËÙÍøÂçʵÏÖǧÕ×µ½ÉçÇø¡¢¾ÖÓòÍø°ÙÕ×µ½Â¥ÓʮÕ×µ½Óû§¡£ÓÉÓÚFTTBÍêÈ«·Â·ðÊÇ»¥ÁªÍøÀïÃæµÄÒ»¸ö¾ÖÓòÍø£¬ËùÒÔʹÓÃFTTB²»ÐèÒªÒª²¦ºÅ£¬²¢ÇÒFTTBרÏß½ÓÈ뻥ÁªÍø£¬Óû§Ö»Òª¿ª»ú¼´¿É½ÓÈëINTERNET¡£ FTTB½ÓÈëISPµ±È»Ò²²»»áÏñÆÕͨ²¦ºÅÉÏÍøÄÇÑùÓö棬FTTBÉÏÍøÖ»Óпì»òÂýµÄÇø±ð£¬²»»á²úÉú½ÓÈëÓöæµÄÇé¿ö£¬²¢ÇÒÒòΪͨ¹ýFTTBÉÏÍø²¢Ã»Óо¹ýµç»°½»»»Íø½ÓÈëINTERNET£¬Ö»Õ¼Óÿí´øÍøÂç×ÊÔ´£¬ÓÃFTTBä¯ÀÀ»¥ÁªÍøʱ£¬²»²úÉúµç»°·Ñ¡£
FTTB£¬¶ÔÓ²¼þÒªÇóºÍÆÕͨ¾ÖÓòÍøµÄÒªÇóÒ»Ñù£º¼ÆËã»úºÍ10MÒÔÌ«Íø¿¨£¬ËùÒÔ¶ÔÓû§À´ËµÓ²¼þͶ×ʷdz£ÉÙ¡£FTTB¸ßËÙרÏßÉÏÍøÓû§²»µ«¿ÉÏíÓÃInternetËùÓÐÒµÎñ£¬Í¨¹ý»¥ÁªÍø²éѯÐÅÏ¢¡¢Ñ°Çó°ïÖú¡¢ÓʼþͨÐÅ¡¢µç×ÓÉÌÎñ¡¢¹ÉƱ֤ȯ²Ù×÷£¬¶øÇÒ»¹¿ÉÏíÓÃISPÁíÍâÌṩµÄÖî¶à¿í´øÔöÖµÒµÎñ£¬Ô¶³Ì½ÌÓý£¬Ô¶³ÌÒ½ÁÆ£¬½»»¥ÊÓƵ£¨VOD¡¢NVOD£©£¬½»»¥ÓÎÏ·£¬¹ã²¥ÊÓƵµÈ£¬²¢ÇÒFTTBºÍHFCÏà±È¿ÉÒÔ³ä·Ö±£Ö¤Ã¿¸öÓû§µÄ´ø¿í£¬ÒòΪÿ¸öÓû§×îÖÕµÄ10M´ø¿íÊǶÀÏíµÄ¡£
FTTB×÷ΪһÖÖ¸ßËÙµÄÉÏÍø·½Ê½ÓŵãÊÇÏÔ¶øÒ×¼ûµÄ£¬µ«ÊÇȱµãÎÒÃÇÒ²Ó¦¸Ã¿´µ½£¬ISP±ØÐëͶÈë´óÁ¿×ʽðÆÌÉè¸ßËÙÍøÂ絽ÿ¸öÓû§¼ÒÖУ¬Òò´Ë¼«´óµÄÏÞÖÆÁËFTTBµÄÍƹãºÍÓ¦Óã¬ÒªÕæÕýÈöàÊýÍøÃñ³ÐÊܵÃÆð»¹ÐèÒª×÷ºÜ¶à¹¤×÷¡£
FTTB Fiber to The Building ¹âÏ˵½Â¥
FTTC Fiber to The Curb ¹âÏ˵½Â·±ß
FTTH Fiber to The Home ¹âÏ˵½¼Ò
FTTO Fiber to The Office ¹âÏ˵½°ì¹«ÊÒ
FSA Fiber to the Serving Area ¹âÏ˵½·þÎñÇø
1.ʲôÊÇFTTB£¿
Èç½ñ56kµÄModemÒѾ²»ÄÜÔÙÂú×ãÎÒÃǵÄÐèÒª¡£Ëæ׿¼Êõ²»¶ÏµÄ½ø²½£¬¸÷ÖÖ¿í´ø½ÓÈ뷽ʽӦÔ˶øÉú£¬Èç½ñ³£ÓõĿí´ø½ÓÈ뷽ʽÓУºDDN¡¢Ö¡Öм̡¢ÎÞÏß¡¢¹âÏË¡¢FTTB+LAN¡¢¹ãµç£¨Cable Modem£©¡¢xDSL(ADSLÊÇxDSLµÄÒ»ÖÖ£©µÈ£¬ÓÉÓÚDDNºÍÖ¡Öм̵ȼ۸ñ±È½Ï°º¹ó£¬¶àÓÃÓÚ¹«Ë¾»òÆóÒµ£¬¶øÎÞÏßÓÖÒòΪÎÞ·¨ÔÚ¶Ìʱ¼äÄÚ¸øÖйúÕâÑù´óµÄÓû§ÈºÌṩÕâÑù¸ßµÄ´ø¿í£¬¹âÏ˵ÄͶÈëÌ«´óÒ²ÔÝʱ²»»á³ÉΪÖ÷Á÷¡£ÏÖÔÚÀëÎÒÃDZȽϽüµÄÓУºFTTB+LAN¡¢Cable modem¡¢ADSLµÈ½ÓÈ뷽ʽ¡£
FTTB+LAN(¼ò³ÆFTTB)£º¼´Fiber to The Building£¨¹âÏ˵½Â¥£©£¬ÊÇÒ»ÖÖ»ùÓÚÓÅ»¯¹âÏËÍøÂç¼¼ÊõµÄ¿í´ø½ÓÈ뷽ʽ£¬ÎÒÃdzÆΪFTTB+LANµÄ¿í´ø½ÓÈëÍø£¨¼ò³ÆFTTB£©¡£ËüÊÇÀûÓÃÊý×Ö¿í´ø¼¼Êõ£¬¹âÏËÖ±½Óµ½Ð¡ÇøÀÔÙͨ¹ýË«½ÊÏߣ¨³¬ÎåÀàË«½ÊÏß»ò4¶Ô·ÇÆÁ±ÎË«½ÊÏߣ©µ½¸÷¸öÓû§¡£FTTB²ÉÓõÄÊÇרÏß½ÓÈ룬ÎÞÐ貦ºÅ£¬°²×°¼ò±ã£¬¿Í»§¶ËÖ»ÐèÔÚ¼ÆËã»úÉÏ°²×°Ò»¿éÍø¿¨¼´¿É½øÐÐ24Сʱ¸ßËÙÉÏÍø¡£FTTBÌṩ×î¸ßÉÏÏÂÐÐËÙÂÊÊÇ10Mbps£¨¶ÀÏí£©¡£ÕâÊÇÒ»ÖÖ×îºÏÀí¡¢×îʵÓá¢×î¾¼ÃÓÐЧµÄ¿í´ø½ÓÈë·½·¨¡£
Cable Modem£ºÊÇÓɹãµçÖ÷°ìµÄ¡£ËüÊÇͨ¹ýÓÐÏßµçÊÓÉÏÍø£¬µ«Cable ModemÊǽ«Ä¿Ç°µÄ450MhzµÄµ¥ÏòCATVÓÐÏßµçÊÓÍøÂç¸ÄÔì³É750MhzµÄË«ÏòHFC(¹âÏËͬÖá»ìºÏ)Íøºó²ÅÄܹ¤×÷¡£HFC´ÓÍ·¶Ëµ½¸÷¸ö¹âÏ˽ڵãÓÃÄ£Äâ¹âÏËÁ¬½Ó£¬¹¹³ÉÒ»¸öÐÇÐÎÍø¡£¹âÏ˽ڵãÏÂÊÇͬÖáµçÀÂ×é³ÉµÄÊ÷ÐÎ×ÜÏßÍø¡£Ò»¸ö¹âÏ˽ڵã¿ÉÒÔÖ§³Ö500-2000¸öÓû§£¬¹âÏ˽ڵ㵽ͷ¶ËµÄ¾àÀëΪ25Km£¬µ½Óû§µÄ¾àÀë²»³¬¹ý2-3km¡£Í·¶Ë½«Cable ModemµÄÐźÅת»»ºó½ÓÈëÊý×ÖÍøÂç¡£Cable ModemÊý¾ÝͨµÀÊÇ´Ó5-40Mhz·Ö³öÒ»¸öÉÏÐÐƵµÀ£¬Í¬Ê±´Ó550-750Mhz·Ö³öÒ»¸öÏÂÐÐƵµÀ¹¹³ÉµÄË«ÏòͨµÀ¡£ÉÏÐÐƵµÀÈÝÒ×Êܵ½¼Òµç¸ÉÈÅ¡£Calbe ModemÒ»°ãʹÓÃQPSKµ÷ÖÆ£¬Èç½ñµ÷ÖÆÓÐ256QAMºÍ64QAM£¬µ«Ê¹ÓÃ64QAM+QPSKµ÷ÖƾӶࡣÔÚʹÓÃ64QAMµ÷ÖÆʱCalbe Modem×î´óÌṩÏÂÐÐ10Mbps£¬ÉÏÐÐ10MbpsµÄ¹²ÏíËÙÂÊ¡£Ê¹ÓÃ256QAMµ÷ÖÆʱCalbe Modem×î´óÌṩÏÂÐÐ36Mbps£¬ÉÏÐÐ10MbpsµÄ¹²ÏíËÙÂÊ¡£
ADSL£º£¨Asymmetric Digital Subscriber Line£©£¬·Ç¶Ô³ÆÊý×ÖÓû§Ïß·¡£ADSLÌṩ×î´óÏÂÐÐ8Mbps/ÉÏÐÐ640KbpsµÄ²»¶Ô³ÆËÙÂÊ¡£ADSLÊÇÀûÓÃÏÖÓеÄÒ»¶ÔÍÖÆË«½ÊÏß(µç»°Ïß)£¬ÔÚÁ½Í·×°Ò»¶ÔADSL ModemÀ´½øÐÐÊý¾Ý´«ËÍ¡£ADSL½ÓÈëÍøÂçÊÇÔÚÓû§Ïß·½Óµ½³Ì¿Ø½»»»»úÒÔÇ°½«Êý¾ÝÐźŷÖÀë³öÀ´£¬´ÓÓû§µ½¾Ö¶ËÊÇÒ»¸öÐÇÐÎÍøÂç¡£ÒòΪÎÒÃÇÆÕͨµÄµç»°ÊÜPBX½»»»»úµÄÏÞÖÆֻʹÓÃÁË0-4KhzµÄƵ¶Î£¬ËùÒÔ¿ÉÒÔ²ÉÓÃƵ·Ö¸´Óü¼ÊõÔڵ绰ÏßµÄ4KhzÒÔÉϵÄƵ¶Î´«ËÍÊý¾Ý(µ±È»Õâ¸öÊý¾ÝÊDz»ÄÜͨ¹ý³Ì¿Ø½»»»»úµÄ)¡£ADSLµÄƵÂÊ·ÖÅ䣺0¡«4KhzÓïÒôÐźţ¬20¡«50KhzÉÏÐÐƵÂÊ£¬140¡«1100KhzÏÂÐÐƵÂÊ¡£ËùÒÔÓû§ÒªÍ¨¹ýADSLÉÏÍø±ØÐëÓо߱¸ÐźŷÖÀëÆ÷µÄADSL Modem£¬µ±È»Íø¿¨ÊÇÉÙ²»Á˵ġ£
2.FTTBÌص㣺
(1)Ëٶȿì:¹âÏ˵½Â¥£¬ÍøÏßµ½»§£¬ÉÏ¡¢ÏÂÐÐ×î¸ßËÙÂÊ¿É´ïµ½10Mbps£¬ÊÇÆÕͨ56Kµ÷Öƽâµ÷Æ÷µÄ180±¶¡£
(2)ÈÝÁ¿´ó:ÿ»§×î¸ß¿É¶ÀÏíË«Ïò¾ùºâ10M´ø¿í£¬Ï൱ÓÚÆÕͨµç»°´ø¿í64KµÄ156±¶¡£
(3)Ó¦Óùã:¸ßËÙÉÏÍø VODÊÓƵµã²¥ ¼ÒÍ¥°ì¹«£¨SOHO£© Ô¶³Ì½ÌÓý ÊÓƵ»áÒé Ô¶³Ì°ì¹«£¨ROBO£© Ô¶³ÌÒ½ÁÆ Íø¼ä»¥Áª
3.FTTBÓëISDNÓкÎÇø±ð£¿
FTTBÓëISDN¶¼ÊÇÄ¿Ç°½ÏÓÐÓ¦ÓÃÇ°¾°µÄ½ÓÈëÊֶΣ¬¶þÕßÔÚÓ¦ÓÃÖеÄÏàͬµã¶¼Äܹ»½øÐÐÓïÒô¡¢Êý¾Ý¡¢Í¼ÏóµÄ×ÛºÏͨÐÅ£¬µ«FTTBµÄËÙÂÊÒª±ÈISDNµÄËÙÂʸߵöࡣISDNÌṩµÄÊÇ2B£«DµÄÊý¾ÝͨµÀ£¬ÆäËÙÂÊ×î¸ß¿É´ïµ½128KbpS£¬¶øFTTBµÄÉÏÏÂÐÐËÙÂʾù¿É´ï10MbPS¡£
4.FTTBºÍDDNÓкÎÇø±ð£¿
FTTBÌṩ10M´ø¿íÊý¾Ý´«Ê䣬Ïà¶ÔDDNµÄÕ´øÊý¾Ý´«Ê䣨64K£ZM£©¸üÄÜÂú×ãÓû§µÄ´ø¿íÐèÇó¡£Í¬Ê±FTTB·ÑÓýÏDDN ÒªµÍÁ®µÃ¶à¡£
5.FTTBºÍHFCµÄÉÏÍøËÙÂʱȽÏÈçºÎ£¿
FTTB²ÉÓùâÏ˵½Â¥¡¢ÍøÏßµ½»§µÄ½ÓÈ뷽ʽ£¬ÎªÃ¿¸öÓû§Ìṩ¹Ì¶¨¡¢¶ÀÕ¼µÄ´ø¿í£¬ÐéÄâ¾ÖÓòÍøϸ·Öµ½Â¥Ó¾ßÓнÏÇ¿µÄ°²È«ÐÔ£¬¶øHFCÍøÂç½á¹¹ÊÇÊ÷Ð͵ģ¬ Cable ModemÉÏÐÐ10MÏÂÐÐ38MµÄÐŵÀ´ø¿íÊÇÕû¸öÉçÇøÓû§¹²ÏíµÄ£¬Ò»µ©Óû§ÊýÔö¶à£¬Ã¿¸öÓû§Ëù·ÖÅäµÄ´ø¿í¾Í»á¼±¾çϽµ£¬¶øÇÒ¹²ÏíÐÍÍøÂçÍØÆËÖÂÃüµÄȱÏݾÍÊÇËüµÄ°²È«ÐÔ£¨Õû¸öÉçÇøÊôÓÚÒ»¸öÍø¶Î£©£¬Êý¾Ý´«ËÍ»ùÓڹ㲥»úÖÆ£¬Í¬Ò»¸öÉçÇøµÄËùÓÐÓû§¶¼¿ÉÒÔ½ÓÊÕµ½ËûÈ˵ÄÊý¾Ý°ü¡£
6.FTTB¿ÉÒÔÌṩ¾ÖÓòÍøµÄ½ÓÈëÂð£¿
µ±È»¿ÉÒÔ£¬FTTB±¾Éí¾ÍÊÇ FTTB£«LANµÄ¼ò³Æ£¬±È½ÏÊʺÏLANµÄ½ÓÈë¡£
7.ΪʲôFTTBµÄʵ¼ÊËÙÂʲ¢Ã»ÓÐÀíÂÛÖµÄÇô¿ì£¿
Õâ²»ÊÇFTTB±¾ÉíµÄÎÊÌ⣬¶øÊÇÄ¿Ç°InternetµÄ³ö¿Ú´ø¿í¼°ÐÅÏ¢ÍøÕ¾ÉÏÁ¬´ø¿í±È½ÏÕËùÔì³ÉµÄ£¬µ«Ïà±ÈÆäËû½ÓÈ뷽ʽ£¬FTTBÈÔÄÜÌåÏֽϸߵÄËÙ¶ÈÓÅÊÆ¡£
FTTBµÄÈ«³ÆÊÇFiber To The Building£¬Òâ˼ÊÇ¡°¹âÏ˵½Â¥¡±¡£FTTB²ÉÓõÄÊÇרÏß½ÓÈ룬ÎÞÐ貦ºÅ¡£Ëü²ÉÓùâÏËÖ±½Óͨµ½´óÂ¥£¬ÔÙÓÃË«½ÊÏß½Óµ½Óû§µÄ·½Ê½£¬ÊôÓÚרÏß½ÓÈ룬Óû§ÎÞÐ벦ºÅÉÏÍø£¬¿ª»ú¼´¿É½øÈ뻥ÁªÍø¡£FTTBʹÓõĽÓÈëÉ豸ÊÇÄÚÖÃʽÒÔÌ«Íø¿¨£¬Ã¿¸öÓû§¾ù¿É¶ÀÏíË«Ïò10M´ø¿í
FTTH¾ÍÊǹâÏ˽øÈëÿ¼Òÿ»§,ÌṩµÄ´ø¿íÊÇADSLµÄ100±¶¡£¹âÏ˾ßÓÐÊÙÃü³¤,ÎÞ¸ÉÈÅ, ´ø¿í¼¸ºõÎÞÏÞµÄÓŵã,ÊÇÍÏß¼¼ÊõËùÎÞ·¨±ÈÄâµÄ¡£FTTHÊÇʵÏÖ»°Òô¡¢ÊÓƵ¡¢Êý¾ÝÈýÍøºÏÒ»×îºÃµÄ½â¾ö·½°¸¡£FTTHµÄÆÕ¼°½«³¹µ×¸Ä±äÎÒÃǵÄÉú»î...
Ïêϸ½éÉÜ
˵µ½FTTH£¬Ê×ÏȾͱØÐë̸µ½¹âÏ˽ÓÈë¡£¹âÏ˽ÓÈëÊÇÖ¸¾Ö¶ËÓëÓû§Ö®¼äÍêÈ«ÒÔ¹âÏË×÷Ϊ´«ÊäýÌå¡£¹âÏ˽ÓÈë¿ÉÒÔ·ÖΪÓÐÔ´¹â½ÓÈëºÍÎÞÔ´¹â½ÓÈë¡£¹âÏËÓû§ÍøµÄÖ÷Òª¼¼ÊõÊǹⲨ´«Êä¼¼Êõ¡£Ä¿Ç°¹âÏË´«ÊäµÄ¸´Óü¼Êõ·¢Õ¹Ï൱¿ì£¬¶àÊýÒÑ´¦ÓÚʵÓû¯¡£¸ù¾Ý¹âÏËÉîÈëÓû§µÄ³Ì¶È£¬¿É·ÖΪFTTC¡¢FTTZ¡¢FTTO¡¢FTTF¡¢FTTHµÈ¡£
FTTH(Fiber To The Home )£¬¹ËÃû˼Òå¾ÍÊÇÒ»¸ù¹âÏËÖ±½Óµ½¼ÒÍ¥¡£¾ßÌå˵£¬FTTHÊÇÖ¸½«¹âÍøÂçµ¥Ôª(ONU)°²×°ÔÚס¼ÒÓû§»òÆóÒµÓû§´¦£¬Êǹâ½ÓÈëϵÁÐÖгýFTTD(¹âÏ˵½×ÀÃæ)Íâ×î¿¿½üÓû§µÄ¹â½ÓÈëÍøÓ¦ÓÃÀàÐÍ¡£FTTHµÄÏÔÖø¼¼ÊõÌصãÊDz»µ«Ìṩ¸ü´óµÄ´ø¿í£¬¶øÇÒÔöÇ¿ÁËÍøÂç¶ÔÊý¾Ý¸ñʽ¡¢ËÙÂÊ¡¢²¨³¤ºÍÐÒéµÄ͸Ã÷ÐÔ£¬·Å¿íÁ˶Ի·¾³Ìõ¼þºÍ¹©µçµÈÒªÇ󣬼ò»¯ÁËά»¤ºÍ°²×°¡£
FTTHµÄÓÅÊÆÖ÷ÒªÊÇÓÐ5µã£ºµÚÒ»£¬ËüÊÇÎÞÔ´ÍøÂ磬´Ó¾Ö¶Ëµ½Óû§£¬Öмä»ù±¾ÉÏ¿ÉÒÔ×öµ½ÎÞÔ´£»µÚ¶þ£¬ËüµÄ´ø¿íÊDZȽϿíµÄ£¬³¤¾àÀëÕýºÃ·ûºÏÔËÓªÉ̵Ĵó¹æÄ£ÔËÓ÷½Ê½£»µÚÈý£¬ÒòΪËüÊÇÔÚ¹âÏËÉϳÐÔصÄÒµÎñ£¬ËùÒÔ²¢Ã»ÓÐʲôÎÊÌ⣻µÚËÄ£¬ÓÉÓÚËüµÄ´ø¿í±È½Ï¿í£¬Ö§³ÖµÄÐÒé±È½ÏÁé»î£»µÚÎ壬Ëæ׿¼ÊõµÄ·¢Õ¹£¬°üÀ¨µã¶Ôµã¡¢1.25GºÍFTTHµÄ·½Ê½¶¼Öƶ¨Á˱ȽÏÍêÉƵŦÄÜ¡£
ÔÚ¹â½ÓÈë¼Ò×壬»¹ÓÐFTTB(Fiber To The Building)¹âÏ˵½´óÂ¥£¬FTTC(Fiber To The Curb)¹âÏ˵½Â·±ß£¬FTTSA(Fiber To The Service Area)¹âÏ˵½·þÎñÇøµÈµÈ¡£
FTTB£¨Fiber To The Building£©£ºÒâ¼´¹âÏ˵½Â¥£¬ÊÇÒ»ÖÖ»ùÓÚÓÅ»¯¸ßËÙ¹âÏ˾ÖÓòÍø¼¼ÊõµÄ¿í´ø½ÓÈ뷽ʽ£¬²ÉÓùâÏ˵½Â¥¡¢ÍøÏßµ½»§µÄ·½Ê½ÊµÏÖÓû§µÄ¿í´ø½ÓÈ룬ÎÒÃdzÆΪFTTB+LANµÄ¿í´ø½ÓÈëÍø£¨¼ò³ÆFTTB£©£¬ÕâÊÇÒ»ÖÖ×îºÏÀí¡¢×îʵÓá¢×î¾¼ÃÓÐЧµÄ¿í´ø½ÓÈë·½·¨¡£ FTTB¿í´ø½ÓÈëÊDzÉÓõ¥Ä£¹âÏ˸ßËÙÍøÂçʵÏÖǧÕ×µ½ÉçÇø¡¢¾ÖÓòÍø°ÙÕ×µ½Â¥ÓʮÕ×µ½Óû§¡£ÓÉÓÚFTTBÍêÈ«·Â·ðÊÇ»¥ÁªÍøÀïÃæµÄÒ»¸ö¾ÖÓòÍø£¬ËùÒÔʹÓÃFTTB²»ÐèÒªÒª²¦ºÅ£¬²¢ÇÒFTTBרÏß½ÓÈ뻥ÁªÍø£¬Óû§Ö»Òª¿ª»ú¼´¿É½ÓÈëINTERNET¡£ FTTB½ÓÈëISPµ±È»Ò²²»»áÏñÆÕͨ²¦ºÅÉÏÍøÄÇÑùÓö棬FTTBÉÏÍøÖ»Óпì»òÂýµÄÇø±ð£¬²»»á²úÉú½ÓÈëÓöæµÄÇé¿ö£¬²¢ÇÒÒòΪͨ¹ýFTTBÉÏÍø²¢Ã»Óо¹ýµç»°½»»»Íø½ÓÈëINTERNET£¬Ö»Õ¼Óÿí´øÍøÂç×ÊÔ´£¬ÓÃFTTBä¯ÀÀ»¥ÁªÍøʱ£¬²»²úÉúµç»°·Ñ¡£
FTTB£¬¶ÔÓ²¼þÒªÇóºÍÆÕͨ¾ÖÓòÍøµÄÒªÇóÒ»Ñù£º¼ÆËã»úºÍ10MÒÔÌ«Íø¿¨£¬ËùÒÔ¶ÔÓû§À´ËµÓ²¼þͶ×ʷdz£ÉÙ¡£FTTB¸ßËÙרÏßÉÏÍøÓû§²»µ«¿ÉÏíÓÃInternetËùÓÐÒµÎñ£¬Í¨¹ý»¥ÁªÍø²éѯÐÅÏ¢¡¢Ñ°Çó°ïÖú¡¢ÓʼþͨÐÅ¡¢µç×ÓÉÌÎñ¡¢¹ÉƱ֤ȯ²Ù×÷£¬¶øÇÒ»¹¿ÉÏíÓÃISPÁíÍâÌṩµÄÖî¶à¿í´øÔöÖµÒµÎñ£¬Ô¶³Ì½ÌÓý£¬Ô¶³ÌÒ½ÁÆ£¬½»»¥ÊÓƵ£¨VOD¡¢NVOD£©£¬½»»¥ÓÎÏ·£¬¹ã²¥ÊÓƵµÈ£¬²¢ÇÒFTTBºÍHFCÏà±È¿ÉÒÔ³ä·Ö±£Ö¤Ã¿¸öÓû§µÄ´ø¿í£¬ÒòΪÿ¸öÓû§×îÖÕµÄ10M´ø¿íÊǶÀÏíµÄ¡£
FTTB×÷ΪһÖÖ¸ßËÙµÄÉÏÍø·½Ê½ÓŵãÊÇÏÔ¶øÒ×¼ûµÄ£¬µ«ÊÇȱµãÎÒÃÇÒ²Ó¦¸Ã¿´µ½£¬ISP±ØÐëͶÈë´óÁ¿×ʽðÆÌÉè¸ßËÙÍøÂ絽ÿ¸öÓû§¼ÒÖУ¬Òò´Ë¼«´óµÄÏÞÖÆÁËFTTBµÄÍƹãºÍÓ¦Óã¬ÒªÕæÕýÈöàÊýÍøÃñ³ÐÊܵÃÆð»¹ÐèÒª×÷ºÜ¶à¹¤×÷¡£
FTTB Fiber to The Building ¹âÏ˵½Â¥
FTTC Fiber to The Curb ¹âÏ˵½Â·±ß
FTTH Fiber to The Home ¹âÏ˵½¼Ò
FTTO Fiber to The Office ¹âÏ˵½°ì¹«ÊÒ
FSA Fiber to the Serving Area ¹âÏ˵½·þÎñÇø
1.ʲôÊÇFTTB£¿
Èç½ñ56kµÄModemÒѾ²»ÄÜÔÙÂú×ãÎÒÃǵÄÐèÒª¡£Ëæ׿¼Êõ²»¶ÏµÄ½ø²½£¬¸÷ÖÖ¿í´ø½ÓÈ뷽ʽӦÔ˶øÉú£¬Èç½ñ³£ÓõĿí´ø½ÓÈ뷽ʽÓУºDDN¡¢Ö¡Öм̡¢ÎÞÏß¡¢¹âÏË¡¢FTTB+LAN¡¢¹ãµç£¨Cable Modem£©¡¢xDSL(ADSLÊÇxDSLµÄÒ»ÖÖ£©µÈ£¬ÓÉÓÚDDNºÍÖ¡Öм̵ȼ۸ñ±È½Ï°º¹ó£¬¶àÓÃÓÚ¹«Ë¾»òÆóÒµ£¬¶øÎÞÏßÓÖÒòΪÎÞ·¨ÔÚ¶Ìʱ¼äÄÚ¸øÖйúÕâÑù´óµÄÓû§ÈºÌṩÕâÑù¸ßµÄ´ø¿í£¬¹âÏ˵ÄͶÈëÌ«´óÒ²ÔÝʱ²»»á³ÉΪÖ÷Á÷¡£ÏÖÔÚÀëÎÒÃDZȽϽüµÄÓУºFTTB+LAN¡¢Cable modem¡¢ADSLµÈ½ÓÈ뷽ʽ¡£
FTTB+LAN(¼ò³ÆFTTB)£º¼´Fiber to The Building£¨¹âÏ˵½Â¥£©£¬ÊÇÒ»ÖÖ»ùÓÚÓÅ»¯¹âÏËÍøÂç¼¼ÊõµÄ¿í´ø½ÓÈ뷽ʽ£¬ÎÒÃdzÆΪFTTB+LANµÄ¿í´ø½ÓÈëÍø£¨¼ò³ÆFTTB£©¡£ËüÊÇÀûÓÃÊý×Ö¿í´ø¼¼Êõ£¬¹âÏËÖ±½Óµ½Ð¡ÇøÀÔÙͨ¹ýË«½ÊÏߣ¨³¬ÎåÀàË«½ÊÏß»ò4¶Ô·ÇÆÁ±ÎË«½ÊÏߣ©µ½¸÷¸öÓû§¡£FTTB²ÉÓõÄÊÇרÏß½ÓÈ룬ÎÞÐ貦ºÅ£¬°²×°¼ò±ã£¬¿Í»§¶ËÖ»ÐèÔÚ¼ÆËã»úÉÏ°²×°Ò»¿éÍø¿¨¼´¿É½øÐÐ24Сʱ¸ßËÙÉÏÍø¡£FTTBÌṩ×î¸ßÉÏÏÂÐÐËÙÂÊÊÇ10Mbps£¨¶ÀÏí£©¡£ÕâÊÇÒ»ÖÖ×îºÏÀí¡¢×îʵÓá¢×î¾¼ÃÓÐЧµÄ¿í´ø½ÓÈë·½·¨¡£
Cable Modem£ºÊÇÓɹãµçÖ÷°ìµÄ¡£ËüÊÇͨ¹ýÓÐÏßµçÊÓÉÏÍø£¬µ«Cable ModemÊǽ«Ä¿Ç°µÄ450MhzµÄµ¥ÏòCATVÓÐÏßµçÊÓÍøÂç¸ÄÔì³É750MhzµÄË«ÏòHFC(¹âÏËͬÖá»ìºÏ)Íøºó²ÅÄܹ¤×÷¡£HFC´ÓÍ·¶Ëµ½¸÷¸ö¹âÏ˽ڵãÓÃÄ£Äâ¹âÏËÁ¬½Ó£¬¹¹³ÉÒ»¸öÐÇÐÎÍø¡£¹âÏ˽ڵãÏÂÊÇͬÖáµçÀÂ×é³ÉµÄÊ÷ÐÎ×ÜÏßÍø¡£Ò»¸ö¹âÏ˽ڵã¿ÉÒÔÖ§³Ö500-2000¸öÓû§£¬¹âÏ˽ڵ㵽ͷ¶ËµÄ¾àÀëΪ25Km£¬µ½Óû§µÄ¾àÀë²»³¬¹ý2-3km¡£Í·¶Ë½«Cable ModemµÄÐźÅת»»ºó½ÓÈëÊý×ÖÍøÂç¡£Cable ModemÊý¾ÝͨµÀÊÇ´Ó5-40Mhz·Ö³öÒ»¸öÉÏÐÐƵµÀ£¬Í¬Ê±´Ó550-750Mhz·Ö³öÒ»¸öÏÂÐÐƵµÀ¹¹³ÉµÄË«ÏòͨµÀ¡£ÉÏÐÐƵµÀÈÝÒ×Êܵ½¼Òµç¸ÉÈÅ¡£Calbe ModemÒ»°ãʹÓÃQPSKµ÷ÖÆ£¬Èç½ñµ÷ÖÆÓÐ256QAMºÍ64QAM£¬µ«Ê¹ÓÃ64QAM+QPSKµ÷ÖƾӶࡣÔÚʹÓÃ64QAMµ÷ÖÆʱCalbe Modem×î´óÌṩÏÂÐÐ10Mbps£¬ÉÏÐÐ10MbpsµÄ¹²ÏíËÙÂÊ¡£Ê¹ÓÃ256QAMµ÷ÖÆʱCalbe Modem×î´óÌṩÏÂÐÐ36Mbps£¬ÉÏÐÐ10MbpsµÄ¹²ÏíËÙÂÊ¡£
ADSL£º£¨Asymmetric Digital Subscriber Line£©£¬·Ç¶Ô³ÆÊý×ÖÓû§Ïß·¡£ADSLÌṩ×î´óÏÂÐÐ8Mbps/ÉÏÐÐ640KbpsµÄ²»¶Ô³ÆËÙÂÊ¡£ADSLÊÇÀûÓÃÏÖÓеÄÒ»¶ÔÍÖÆË«½ÊÏß(µç»°Ïß)£¬ÔÚÁ½Í·×°Ò»¶ÔADSL ModemÀ´½øÐÐÊý¾Ý´«ËÍ¡£ADSL½ÓÈëÍøÂçÊÇÔÚÓû§Ïß·½Óµ½³Ì¿Ø½»»»»úÒÔÇ°½«Êý¾ÝÐźŷÖÀë³öÀ´£¬´ÓÓû§µ½¾Ö¶ËÊÇÒ»¸öÐÇÐÎÍøÂç¡£ÒòΪÎÒÃÇÆÕͨµÄµç»°ÊÜPBX½»»»»úµÄÏÞÖÆֻʹÓÃÁË0-4KhzµÄƵ¶Î£¬ËùÒÔ¿ÉÒÔ²ÉÓÃƵ·Ö¸´Óü¼ÊõÔڵ绰ÏßµÄ4KhzÒÔÉϵÄƵ¶Î´«ËÍÊý¾Ý(µ±È»Õâ¸öÊý¾ÝÊDz»ÄÜͨ¹ý³Ì¿Ø½»»»»úµÄ)¡£ADSLµÄƵÂÊ·ÖÅ䣺0¡«4KhzÓïÒôÐźţ¬20¡«50KhzÉÏÐÐƵÂÊ£¬140¡«1100KhzÏÂÐÐƵÂÊ¡£ËùÒÔÓû§ÒªÍ¨¹ýADSLÉÏÍø±ØÐëÓо߱¸ÐźŷÖÀëÆ÷µÄADSL Modem£¬µ±È»Íø¿¨ÊÇÉÙ²»Á˵ġ£
2.FTTBÌص㣺
(1)Ëٶȿì:¹âÏ˵½Â¥£¬ÍøÏßµ½»§£¬ÉÏ¡¢ÏÂÐÐ×î¸ßËÙÂÊ¿É´ïµ½10Mbps£¬ÊÇÆÕͨ56Kµ÷Öƽâµ÷Æ÷µÄ180±¶¡£
(2)ÈÝÁ¿´ó:ÿ»§×î¸ß¿É¶ÀÏíË«Ïò¾ùºâ10M´ø¿í£¬Ï൱ÓÚÆÕͨµç»°´ø¿í64KµÄ156±¶¡£
(3)Ó¦Óùã:¸ßËÙÉÏÍø VODÊÓƵµã²¥ ¼ÒÍ¥°ì¹«£¨SOHO£© Ô¶³Ì½ÌÓý ÊÓƵ»áÒé Ô¶³Ì°ì¹«£¨ROBO£© Ô¶³ÌÒ½ÁÆ Íø¼ä»¥Áª
3.FTTBÓëISDNÓкÎÇø±ð£¿
FTTBÓëISDN¶¼ÊÇÄ¿Ç°½ÏÓÐÓ¦ÓÃÇ°¾°µÄ½ÓÈëÊֶΣ¬¶þÕßÔÚÓ¦ÓÃÖеÄÏàͬµã¶¼Äܹ»½øÐÐÓïÒô¡¢Êý¾Ý¡¢Í¼ÏóµÄ×ÛºÏͨÐÅ£¬µ«FTTBµÄËÙÂÊÒª±ÈISDNµÄËÙÂʸߵöࡣISDNÌṩµÄÊÇ2B£«DµÄÊý¾ÝͨµÀ£¬ÆäËÙÂÊ×î¸ß¿É´ïµ½128KbpS£¬¶øFTTBµÄÉÏÏÂÐÐËÙÂʾù¿É´ï10MbPS¡£
4.FTTBºÍDDNÓкÎÇø±ð£¿
FTTBÌṩ10M´ø¿íÊý¾Ý´«Ê䣬Ïà¶ÔDDNµÄÕ´øÊý¾Ý´«Ê䣨64K£ZM£©¸üÄÜÂú×ãÓû§µÄ´ø¿íÐèÇó¡£Í¬Ê±FTTB·ÑÓýÏDDN ÒªµÍÁ®µÃ¶à¡£
5.FTTBºÍHFCµÄÉÏÍøËÙÂʱȽÏÈçºÎ£¿
FTTB²ÉÓùâÏ˵½Â¥¡¢ÍøÏßµ½»§µÄ½ÓÈ뷽ʽ£¬ÎªÃ¿¸öÓû§Ìṩ¹Ì¶¨¡¢¶ÀÕ¼µÄ´ø¿í£¬ÐéÄâ¾ÖÓòÍøϸ·Öµ½Â¥Ó¾ßÓнÏÇ¿µÄ°²È«ÐÔ£¬¶øHFCÍøÂç½á¹¹ÊÇÊ÷Ð͵ģ¬ Cable ModemÉÏÐÐ10MÏÂÐÐ38MµÄÐŵÀ´ø¿íÊÇÕû¸öÉçÇøÓû§¹²ÏíµÄ£¬Ò»µ©Óû§ÊýÔö¶à£¬Ã¿¸öÓû§Ëù·ÖÅäµÄ´ø¿í¾Í»á¼±¾çϽµ£¬¶øÇÒ¹²ÏíÐÍÍøÂçÍØÆËÖÂÃüµÄȱÏݾÍÊÇËüµÄ°²È«ÐÔ£¨Õû¸öÉçÇøÊôÓÚÒ»¸öÍø¶Î£©£¬Êý¾Ý´«ËÍ»ùÓڹ㲥»úÖÆ£¬Í¬Ò»¸öÉçÇøµÄËùÓÐÓû§¶¼¿ÉÒÔ½ÓÊÕµ½ËûÈ˵ÄÊý¾Ý°ü¡£
6.FTTB¿ÉÒÔÌṩ¾ÖÓòÍøµÄ½ÓÈëÂð£¿
µ±È»¿ÉÒÔ£¬FTTB±¾Éí¾ÍÊÇ FTTB£«LANµÄ¼ò³Æ£¬±È½ÏÊʺÏLANµÄ½ÓÈë¡£
7.ΪʲôFTTBµÄʵ¼ÊËÙÂʲ¢Ã»ÓÐÀíÂÛÖµÄÇô¿ì£¿
Õâ²»ÊÇFTTB±¾ÉíµÄÎÊÌ⣬¶øÊÇÄ¿Ç°InternetµÄ³ö¿Ú´ø¿í¼°ÐÅÏ¢ÍøÕ¾ÉÏÁ¬´ø¿í±È½ÏÕËùÔì³ÉµÄ£¬µ«Ïà±ÈÆäËû½ÓÈ뷽ʽ£¬FTTBÈÔÄÜÌåÏֽϸߵÄËÙ¶ÈÓÅÊÆ¡£
»Ø´ðÕߣº
xhy1331
»Ø´ðʱ¼ä£º2012-05-25 10:54
157 163
ѧϰÁËÒ»ÏÂ
»Ø´ðÕߣº
ÖìСÁúAA
»Ø´ðʱ¼ä£º2012-05-25 11:47
96 167
2Â¥ÕæÏêϸ£¬Ð»Ð»£¬Ñ§Ï°ÁË£¡
»Ø´ðÕߣº
bjld04
»Ø´ðʱ¼ä£º2012-05-25 12:45
104 149
FTTH ÊǹâÏ˵½»§£¬FTTBÊǹâÏ˵½Â¥£¬ Ò»¸öÊǵ½¼ÒÀһ¸öÖ»Êǵ½Â¥µÀ½»»»»ú £¬
»Ø´ðÕߣº
jessyqiang
»Ø´ðʱ¼ä£º2012-05-28 16:08
158 106
¸öÈËÈÏΪFTTHµÄÓÅÊÆÒª´óÓÚFTTB
»Ø´ðÕߣº
frank_132
»Ø´ðʱ¼ä£º2012-05-30 15:47
98 107
ÈȵãÎÊÌâ
¸ü¶à¾«²Ê
ÁªÏµÎÒÃÇ - ÎÊͨÐÅר¼Ò | Powered by MSCBSC Òƶ¯Í¨ÐÅÍø © 2006 - |