JPWO2021176696A1 - - Google Patents

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Publication number
JPWO2021176696A1
JPWO2021176696A1 JP2022504923A JP2022504923A JPWO2021176696A1 JP WO2021176696 A1 JPWO2021176696 A1 JP WO2021176696A1 JP 2022504923 A JP2022504923 A JP 2022504923A JP 2022504923 A JP2022504923 A JP 2022504923A JP WO2021176696 A1 JPWO2021176696 A1 JP WO2021176696A1
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JP
Japan
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
JP2022504923A
Other versions
JP7481644B2 (ja
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Publication of JP7481644B2 publication Critical patent/JP7481644B2/ja
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Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/27Arrangements for networking
    • H04B10/275Ring-type networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/27Arrangements for networking
    • H04B10/272Star-type networks or tree-type networks
    • H04B10/2725Star-type networks without a headend
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/03Arrangements for fault recovery

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Optical Communication System (AREA)
  • Small-Scale Networks (AREA)
JP2022504923A 2020-03-06 2020-03-06 通信システム Active JP7481644B2 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/009730 WO2021176696A1 (ja) 2020-03-06 2020-03-06 通信システム及びoltシステム

Publications (2)

Publication Number Publication Date
JPWO2021176696A1 true JPWO2021176696A1 (ja) 2021-09-10
JP7481644B2 JP7481644B2 (ja) 2024-05-13

Family

ID=77613938

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2022504923A Active JP7481644B2 (ja) 2020-03-06 2020-03-06 通信システム

Country Status (3)

Country Link
US (1) US12063072B2 (ja)
JP (1) JP7481644B2 (ja)
WO (1) WO2021176696A1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7205004B2 (ja) * 2020-09-18 2023-01-16 三菱電機株式会社 一芯双方向光リングシステム、一芯双方向光リングシステムの制御方法、及び、中央局

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001168802A (ja) * 1999-10-14 2001-06-22 Korea Advanced Inst Of Sci Technol 副搬送波多重方式両方向自己治癒環形光通信網
US20050019031A1 (en) * 2003-07-25 2005-01-27 Nokia Corporation Single-fiber protection in telecommunications networks
JP2009130505A (ja) * 2007-11-21 2009-06-11 Fujitsu Ltd 光伝送装置、光入力断検出閾値設定方法および光入力断検出閾値設定プログラム
JP2013070123A (ja) * 2011-09-20 2013-04-18 Fujitsu Ltd 光伝送システムおよび雑音抑制方法

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020071149A1 (en) * 2000-12-12 2002-06-13 Xu Dexiang John Apparatus and method for protection of an asynchronous transfer mode passive optical network interface
US7590139B2 (en) * 2005-12-19 2009-09-15 Teknovus, Inc. Method and apparatus for accommodating TDM traffic in an ethernet passive optical network
US8538256B2 (en) * 2008-03-17 2013-09-17 Telefonaktiebolaget L M Ericsson (Publ) Fast protection scheme for passive optical network
US9319758B2 (en) * 2008-10-21 2016-04-19 Broadcom Corporation Method and system for protection switching in ethernet passive optical networks
CN101854566B (zh) * 2009-04-02 2014-08-13 华为技术有限公司 无源光网络保护方法、主备切换控制设备和系统
CN101888268B (zh) * 2009-05-14 2013-09-11 中兴通讯股份有限公司 一种在以太无源光网络实现主干光纤保护的方法和装置
CN101990132A (zh) * 2009-07-30 2011-03-23 中兴通讯股份有限公司 光线路终端快速更新光网络单元测距结果的方法及系统
US8422887B2 (en) * 2010-01-31 2013-04-16 Pmc Sierra Ltd System for redundancy in Ethernet passive optical networks (EPONs)
KR101286011B1 (ko) * 2010-03-24 2013-08-23 미쓰비시덴키 가부시키가이샤 통신 방법, 광통신 시스템, 이용자측 광회선 종단 장치, 국측 광회선 종단 장치 및 제어 장치
CN103178971B (zh) * 2011-12-20 2015-12-16 华为技术有限公司 Pon保护方法及装置
EP2621194A1 (en) * 2012-01-30 2013-07-31 Mitsubishi Electric R&D Centre Europe B.V. Transparent protection switching operation in a pon
US8953936B2 (en) * 2012-10-01 2015-02-10 Telefonaktiebolaget L M Ericsson (Publ) Method for protection of multi-wavelength passive optical network
US9008501B2 (en) * 2013-02-13 2015-04-14 Tellabs Bedford, Inc. Network and method for providing redundancy in an optical distribution network
US20160134953A1 (en) * 2014-11-12 2016-05-12 Broadcom Corporation Shared protection in optical networks
JP7415192B2 (ja) * 2020-03-06 2024-01-17 日本電信電話株式会社 通信システム及びoltシステム

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001168802A (ja) * 1999-10-14 2001-06-22 Korea Advanced Inst Of Sci Technol 副搬送波多重方式両方向自己治癒環形光通信網
US20050019031A1 (en) * 2003-07-25 2005-01-27 Nokia Corporation Single-fiber protection in telecommunications networks
JP2009130505A (ja) * 2007-11-21 2009-06-11 Fujitsu Ltd 光伝送装置、光入力断検出閾値設定方法および光入力断検出閾値設定プログラム
JP2013070123A (ja) * 2011-09-20 2013-04-18 Fujitsu Ltd 光伝送システムおよび雑音抑制方法

Also Published As

Publication number Publication date
WO2021176696A1 (ja) 2021-09-10
US12063072B2 (en) 2024-08-13
US20230084976A1 (en) 2023-03-16
JP7481644B2 (ja) 2024-05-13

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