CA2164071A1 - Optical communication system - Google Patents
Optical communication systemInfo
- Publication number
- CA2164071A1 CA2164071A1 CA002164071A CA2164071A CA2164071A1 CA 2164071 A1 CA2164071 A1 CA 2164071A1 CA 002164071 A CA002164071 A CA 002164071A CA 2164071 A CA2164071 A CA 2164071A CA 2164071 A1 CA2164071 A1 CA 2164071A1
- Authority
- CA
- Canada
- Prior art keywords
- protection
- link
- nodes
- link failure
- node
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0221—Power control, e.g. to keep the total optical power constant
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
- H04B10/032—Arrangements for fault recovery using working and protection systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0278—WDM optical network architectures
- H04J14/0283—WDM ring architectures
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0287—Protection in WDM systems
- H04J14/0289—Optical multiplex section protection
- H04J14/0291—Shared protection at the optical multiplex section (1:1, n:m)
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0287—Protection in WDM systems
- H04J14/0293—Optical channel protection
- H04J14/0295—Shared protection at the optical channel (1:1, n:m)
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0287—Protection in WDM systems
- H04J14/0297—Optical equipment protection
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optical Communication System (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
- Small-Scale Networks (AREA)
Abstract
A discontinuous ring is formed by separate bidirectional optical communication links, with possibly different transmission speeds, synchronous or asynchronous transmission, and ratios of working to protection channels, each linking a pair of terminals in different nodes of a communication system. To protect protection-switched traffic on a communication link from a link failure, it is routed around the ring via the protection channel of the other communication links. To this end, an optical switch is provided between the protection channel of each link and the associated terminals in each node, and is controlled differently in nodes adjacent the link failure and in nodes not adjacent the link failure to route the protection-switched traffic accordingly. Rapid protection switching is facilitated by controlling the optical switches using wavelength detectors directionally coupled to the protection channel at each node.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US328695P | 1995-09-06 | 1995-09-06 | |
US60/003,286 | 1995-09-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2164071A1 true CA2164071A1 (en) | 1997-03-07 |
CA2164071C CA2164071C (en) | 2001-08-21 |
Family
ID=21705075
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002164071A Expired - Lifetime CA2164071C (en) | 1995-09-06 | 1995-11-29 | Optical communication system |
Country Status (6)
Country | Link |
---|---|
US (1) | US5933258A (en) |
EP (1) | EP0848873B1 (en) |
JP (1) | JP3362228B2 (en) |
CA (1) | CA2164071C (en) |
DE (1) | DE69627165T2 (en) |
WO (1) | WO1997009803A1 (en) |
Families Citing this family (64)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6483803B1 (en) * | 1996-09-04 | 2002-11-19 | Nortel Networks Limited | Apparatus and method for restoring fiber optic communications network connections |
SE9603458L (en) * | 1996-09-23 | 1997-12-01 | Ericsson Telefon Ab L M | Method and apparatus for detecting errors in a network |
JP3555824B2 (en) * | 1996-11-21 | 2004-08-18 | 日本電気株式会社 | Branching device |
WO1998025365A2 (en) * | 1996-12-06 | 1998-06-11 | Bell Communications Research, Inc. | Inter-ring cross-connect for survivable multi-wavelength optical communication networks |
DE19703992A1 (en) * | 1997-02-03 | 1998-08-06 | Siemens Ag | Method for the equivalent switching of transmission devices in ring architectures for the bidirectional transmission of ATM cells |
JP3777008B2 (en) * | 1997-02-18 | 2006-05-24 | 株式会社日立コミュニケーションテクノロジー | Disaster recovery control method |
DE69839961D1 (en) * | 1997-02-25 | 2008-10-16 | Hitachi Ltd | OPTICAL CROSS-LINKING DEVICE |
DE19712759A1 (en) * | 1997-03-27 | 1998-10-01 | Bosch Gmbh Robert | Bidirectional optical transmission device and method for checking the transmission in a bidirectional optical transmission device |
JP3175630B2 (en) * | 1997-04-02 | 2001-06-11 | 日本電気株式会社 | Optical communication node and wavelength-division multiplexing optical transmission device having ring configuration formed therefrom |
WO1999000942A2 (en) * | 1997-06-27 | 1999-01-07 | Tellabs Denmark A/S | A method of transmitting data in a ring-shaped teletransmission network, such a network and a network element therefor |
JPH1198077A (en) * | 1997-09-16 | 1999-04-09 | Nec Corp | Light wave network system |
US6233072B1 (en) * | 1997-12-31 | 2001-05-15 | Mci Communications Corporation | Method and system for restoring coincident line and facility failures |
US6195367B1 (en) * | 1997-12-31 | 2001-02-27 | Nortel Networks Limited | Architectural arrangement for bandwidth management in large central offices |
US5870212A (en) * | 1998-01-14 | 1999-02-09 | Mciworldcom, Inc. | Self-healing optical network |
DE19807069A1 (en) | 1998-02-20 | 1999-08-26 | Bosch Gmbh Robert | Optical signal transmission method for optical information communications |
GB9807583D0 (en) * | 1998-04-08 | 1998-06-10 | Cambrian Systems Corp | Path switched shared protection |
US6307652B1 (en) * | 1998-04-28 | 2001-10-23 | Weed Instrument Company, Incorporated | Fault tolerant optical communication apparatus and method |
DE19832039A1 (en) * | 1998-07-16 | 2000-01-20 | Alcatel Sa | Node of a point-to-multipoint network |
US6567194B1 (en) | 1998-08-17 | 2003-05-20 | Corvis Corporation | Optical communication network and protection methods |
US7272321B1 (en) | 1999-05-10 | 2007-09-18 | Alloptic, Inc. | Passive optical network |
US6643464B1 (en) | 1999-07-07 | 2003-11-04 | Nortel Networks Limited | Constrained optical mesh protection for transmission systems |
NL1012568C2 (en) * | 1999-07-12 | 2001-01-15 | Koninkl Kpn Nv | Optical transmission network with protection configuration. |
US6968130B1 (en) * | 1999-09-07 | 2005-11-22 | Nokia Corporation | System and method for fully utilizing available optical transmission spectrum in optical networks |
US6891942B1 (en) | 1999-09-16 | 2005-05-10 | Mci, Inc. | Method and system for using caller preferences to direct special call handling |
US7386236B1 (en) | 1999-09-27 | 2008-06-10 | Alloptic, Inc. | Multiple wavelength TDMA optical network |
DE19946487A1 (en) * | 1999-09-28 | 2001-05-10 | Siemens Ag | Optical protection module for optical network topologies |
US6735392B1 (en) * | 1999-10-18 | 2004-05-11 | Nortel Networks Limited | System and method for transmitting and restoring an optical signal |
US7139477B2 (en) * | 1999-11-03 | 2006-11-21 | Eci Telecom Ltd. | Method and system for diverting traffic in a communication network |
IL132726A (en) * | 1999-11-03 | 2003-07-31 | Eci Telecom Ltd | Method and system for transmitting optical communication |
JP4215369B2 (en) * | 2000-02-09 | 2009-01-28 | 株式会社日立コミュニケーションテクノロジー | Network transmission apparatus and network transmission system |
EP1126741A1 (en) * | 2000-02-15 | 2001-08-22 | Siemens Aktiengesellschaft | Method for protection switching of transmission equipment in MPLS networks |
US20010038473A1 (en) * | 2000-03-10 | 2001-11-08 | Ming-Jun Li | Devices and methods for controlling protection switching in an optical channel shared protection ring |
US6894978B1 (en) * | 2000-03-10 | 2005-05-17 | Noriaki Hashimoto | Method and system for operation of a resilient closed communication network without a dedicated protection network segment |
EP1148667A1 (en) * | 2000-04-20 | 2001-10-24 | TELEFONAKTIEBOLAGET L M ERICSSON (publ) | A multi-wavelength/multi-channel optical system |
US7096275B1 (en) | 2000-06-06 | 2006-08-22 | Lucent Technologies Inc. | Methods and apparatus for protection against network failures |
US20020097461A1 (en) * | 2000-07-07 | 2002-07-25 | Naimish Patel | Bi-directional wavelength switched ring optical protection switching protocol |
US7170852B1 (en) * | 2000-09-29 | 2007-01-30 | Cisco Technology, Inc. | Mesh with projection channel access (MPCA) |
US6856767B2 (en) * | 2000-10-06 | 2005-02-15 | Alphion Corporation | Optical signal quality selection system |
US6782198B1 (en) * | 2000-11-10 | 2004-08-24 | Lucent Technologies Inc. | Switching arrangement for fault recovery in optical WDM ring networks |
GB2386274B (en) * | 2000-12-30 | 2004-07-14 | Redback Networks Inc | Non-BLSR protected layer 2/3 channel provisioning |
US6975589B2 (en) * | 2000-12-30 | 2005-12-13 | Redback Networks Inc. | Method and apparatus for a hybrid variable rate pipe |
US7016300B2 (en) * | 2000-12-30 | 2006-03-21 | Redback Networks Inc. | Protection mechanism for an optical ring |
US7209436B1 (en) * | 2000-12-30 | 2007-04-24 | Redback Networks Inc. | Method and apparatus for variable rate pipes |
CN1184752C (en) * | 2001-02-05 | 2005-01-12 | 华为技术有限公司 | Virtual protection method and device for optical fibre path |
US20050086232A1 (en) * | 2001-02-05 | 2005-04-21 | Jixiong Dong | Virtual protection method and device for fiber path |
DE10126334A1 (en) * | 2001-05-30 | 2002-12-12 | Siemens Ag | Optical protection system for an optical communication system |
US20020181037A1 (en) * | 2001-06-01 | 2002-12-05 | Richard Lauder | Failure protection switching in optical network |
US7372803B2 (en) * | 2001-07-24 | 2008-05-13 | Nortel Networks Limited | Apparatus and method for establishment and protection of connections within mesh networks |
US7054264B2 (en) * | 2001-07-24 | 2006-05-30 | Corrigent Systems Ltd. | Interconnect and gateway protection in bidirectional ring networks |
US7061859B2 (en) | 2001-08-30 | 2006-06-13 | Corrigent Systems Ltd. | Fast protection in ring topologies |
US7305623B2 (en) * | 2001-12-03 | 2007-12-04 | Lucent Technologies Inc. | Method and apparatus for managing and representing elements in a network |
US20040208586A1 (en) * | 2002-03-27 | 2004-10-21 | Susumu Kinoshita | System and method for amplifying signals in an optical network |
DE10237584B4 (en) * | 2002-08-16 | 2005-10-06 | Siemens Ag | Method for managing resources when setting up a replacement path in a transparently switchable network |
CN100370700C (en) * | 2004-04-14 | 2008-02-20 | 华为技术有限公司 | Realizing method and device for optical path shared protection in wave division complex system |
CN101453666B (en) * | 2007-12-07 | 2012-07-04 | 华为技术有限公司 | Main and standby link protection method, loop system and apparatus for passive optical network |
FR2978315B1 (en) * | 2011-07-20 | 2013-09-13 | Thales Sa | INFORMATION TRANSMISSION NETWORK AND CORRESPONDING NETWORK NODE |
FR2983018B1 (en) * | 2011-11-22 | 2014-01-10 | Thales Sa | INFORMATION TRANSMISSION NETWORK AND PROGRAMMABLE NETWORK NUTS |
FR2983017B1 (en) * | 2011-11-22 | 2014-01-10 | Thales Sa | INFORMATION TRANSMISSION NETWORK AND NETWORK CORRESPONDING NOZZLE |
FR2987201B1 (en) | 2012-02-16 | 2017-12-01 | Thales Sa | INFORMATION TRANSMISSION NETWORK AND TRANSMISSION RING NODE |
FR2987204B1 (en) | 2012-02-16 | 2014-03-21 | Thales Sa | INFORMATION TRANSMISSION NETWORK AND NODE |
FR2987202B1 (en) | 2012-02-16 | 2014-03-28 | Thales Sa | NODE AND INFORMATION TRANSMISSION NETWORK |
FR2987203B1 (en) * | 2012-02-16 | 2014-03-28 | Thales Sa | NETWORK AND NETWORK OF INFORMATION TRANSMISSION NETWORK |
FR2996090B1 (en) * | 2012-09-21 | 2014-10-31 | Thales Sa | INFORMATION TRANSMISSION NETWORK HAVING INSERT AUTHORIZATION AND CORRESPONDING NODE |
US10826601B2 (en) * | 2019-01-16 | 2020-11-03 | Ciena Corporation | Optical switch with path continuity monitoring for optical protection switching |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5159595A (en) * | 1988-04-08 | 1992-10-27 | Northern Telecom Limited | Ring transmission system |
JP2570016B2 (en) * | 1991-08-29 | 1997-01-08 | 富士通株式会社 | Path switch switching method for optical transmission equipment |
US5457555A (en) * | 1992-01-10 | 1995-10-10 | Fujitsu Limited | Optical transmission system |
US5442623A (en) * | 1992-08-17 | 1995-08-15 | Bell Communications Research, Inc. | Passive protected self healing ring network |
JPH0795225A (en) * | 1993-09-20 | 1995-04-07 | Fujitsu Ltd | Bidirectional ring network control system |
ATE231667T1 (en) * | 1993-10-29 | 2003-02-15 | Siemens Ag | OPTICAL, TRANSPARENT RING NETWORK WITH SPARE SWITCHING PATHS |
IT1267645B1 (en) * | 1994-12-09 | 1997-02-07 | Cselt Centro Studi Lab Telecom | RING COMMUNICATION STRUCTURE ON OPTICAL VECTOR AND RELATIVE RECONFIGURABLE NODE. |
-
1995
- 1995-11-29 CA CA002164071A patent/CA2164071C/en not_active Expired - Lifetime
-
1996
- 1996-08-29 EP EP96927489A patent/EP0848873B1/en not_active Expired - Lifetime
- 1996-08-29 DE DE69627165T patent/DE69627165T2/en not_active Expired - Lifetime
- 1996-08-29 WO PCT/CA1996/000580 patent/WO1997009803A1/en active IP Right Grant
- 1996-08-29 JP JP51071597A patent/JP3362228B2/en not_active Expired - Lifetime
- 1996-09-04 US US08/707,440 patent/US5933258A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
WO1997009803A1 (en) | 1997-03-13 |
EP0848873B1 (en) | 2003-04-02 |
CA2164071C (en) | 2001-08-21 |
DE69627165T2 (en) | 2003-11-13 |
JPH10511250A (en) | 1998-10-27 |
EP0848873A1 (en) | 1998-06-24 |
US5933258A (en) | 1999-08-03 |
DE69627165D1 (en) | 2003-05-08 |
JP3362228B2 (en) | 2003-01-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20151130 |