WO2011000181A1 - 环形光传送网中处理多跨段工作通道故障的方法及装置 - Google Patents
环形光传送网中处理多跨段工作通道故障的方法及装置 Download PDFInfo
- Publication number
- WO2011000181A1 WO2011000181A1 PCT/CN2009/074146 CN2009074146W WO2011000181A1 WO 2011000181 A1 WO2011000181 A1 WO 2011000181A1 CN 2009074146 W CN2009074146 W CN 2009074146W WO 2011000181 A1 WO2011000181 A1 WO 2011000181A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- alarm
- protection
- oduk
- channel
- working
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 72
- 230000003287 optical effect Effects 0.000 title claims abstract description 45
- 230000005540 biological transmission Effects 0.000 title claims abstract description 11
- 230000004224 protection Effects 0.000 claims abstract description 155
- 230000008034 disappearance Effects 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 11
- 230000001960 triggered effect Effects 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 10
- 238000000926 separation method Methods 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
-
- 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
- H04B10/27—Arrangements for networking
- H04B10/275—Ring-type networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/08—Intermediate station arrangements, e.g. for branching, for tapping-off
- H04J3/085—Intermediate station arrangements, e.g. for branching, for tapping-off for ring networks, e.g. SDH/SONET rings, self-healing rings, meashed SDH/SONET networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1605—Fixed allocated frame structures
- H04J3/1652—Optical Transport Network [OTN]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
- H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
- H04J2203/0057—Operations, administration and maintenance [OAM]
- H04J2203/006—Fault tolerance and recovery
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0079—Operation or maintenance aspects
- H04Q2011/0081—Fault tolerance; Redundancy; Recovery; Reconfigurability
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/009—Topology aspects
- H04Q2011/0092—Ring
Definitions
- the present invention relates to a ring network protection technology in an OTN (Optical Transport Network), and more particularly to a method and apparatus for processing a multi-span working channel failure in a ring OTN.
- OTN Optical Transport Network
- OTN is a transmission network that organizes networks in the optical layer based on wavelength division multiplexing technology and is the next generation backbone transmission network. For 0TN, because the rate of transmitted signals is higher, the amount of information carried is larger, and the wavelength/sub-wavelength service scheduling capability is provided, the network protection of OTN becomes more important for traditional optical network protection, and the protection capability is also More powerful.
- ODUk Optical Data Unit
- end-to-end subnet link protection is usually provided.
- the protection methods commonly used in the industry include 1+1 protection, l:n protection, and channel sharing protection.
- trade-offs are often made based on bandwidth utilization, protection robustness, and switching time.
- 1+1 protection provides a dedicated alternate channel for each subnet link, transmitting the same signal in both the working channel and the protection channel. Therefore, this protection method is the strongest and the switching time is the shortest. However, the bandwidth utilization rate is only 50%. When the network alarm rate is low, the bandwidth is wasted.
- Channel sharing protection is a protection method that is applied to the ring network and shared resources by all services. Therefore, its bandwidth utilization is much higher than the 1+1 protection method. Because of the separation of working resources and protection resources, their robustness is also higher than l:n protection. However, as the nodes in the ring gradually increase, their stability decreases. In particular, when multiple ODUk alarms occur, services may be disconnected. Even if there is no misconnection, for multiple ODUk alarms, the shared resources shared by the channel can only be switched for one service, and multiple faulty services cannot be protected at the same time. .
- Figure 1 is a schematic diagram of service protection by using the channel shared protection mode when a single ODUk alarm occurs on the ring network.
- FIG. 2 shows the service protection of the channel sharing protection mode when multiple ODUk alarms occur on the ring network.
- the channel sharing protection cannot simultaneously switch more than two services to the shared protection channel. At this time, the protection is invalid.
- the invention provides a method and a device for processing a multi-span working channel fault in a ring OTN, which solves the problem that the channel sharing protection fails when multiple ODUk alarms in the ring network occur at the same time in the prior art.
- the present invention provides a method for processing a multi-span working channel failure in a ring OTN, including the steps:
- the method further includes: filtering the alarm when detecting that only the protection ODUk alarm is generated in the ring network.
- the node of the span in which the ODUk alarm is located is in the 1+1 switching state.
- the node of the optical multiplex section layer alarm or the protection ODUk alarm is in the A-direction switching state or the B-direction switching state, and the node through which the protection channel passes is in the through state.
- the method further includes: when detecting that the ODUk alarm disappears, determining whether the corresponding protection ODUk is in a non-fault state, and if yes, performing a 1+1 protection protocol reply process on the service carried on the protection channel, Each node on the protection channel reverts to the idle state. Otherwise, the reply process of the channel sharing protection protocol is triggered, and each node on the protection channel replies to the idle state. Status.
- the method further includes: when detecting that the optical multiplex section layer alarm disappears, triggering a reply flow of the channel sharing protection protocol, and each node on the protection channel returns to an idle state.
- the method further includes: updating, when the protection ODUk alarm disappears, only the status of the protection group.
- the present invention also provides a device for processing a multi-span working channel fault in a ring OTN, including an alarm detecting module and a switching triggering module, wherein
- the alarm detection module is configured to detect the alarm information in the ring optical transmission network in real time and send it to the switching trigger module;
- the switching triggering module is configured to perform a switching process of the 1+1 protection protocol on the service carried on the working channel that generates the alarm when the alarm detecting module detects that only the working ODUk alarm is generated in the ring network;
- the alarm detection module detects that the protection ODUk corresponding to the ODUk that has generated the alarm in the ring network also generates an alarm, or an optical multiplex section is generated in the ring network.
- the switching process of the channel sharing protection protocol is triggered.
- the device further includes:
- the alarm disappearance detecting module is configured to detect the alarm disappearing information in the ring optical transport network in real time and send it to the switching trigger module.
- the switching trigger module is further configured to:
- the alarm disappearance detection module detects that the working ODUk alarm disappears, it is determined whether the corresponding protection ODUk is in a non-fault state at this time. If yes, the reply process of the 1+1 protection protocol is performed on the service carried on the protection channel respectively, otherwise, the trigger channel is triggered. The process of replying to the shared protection agreement;
- the switching triggering module is further configured to trigger a reply process of the channel sharing protection protocol.
- the technical solution of the present invention can solve the problem that the channel sharing protection fails when multiple ODUk alarms in the ring network occur at the same time in the prior art without increasing the link resources.
- the ODUk service performs 1+1 protection at the same time, and provides channel separation protection for link separation under the condition that the protection resources are invalid, thereby greatly enhancing the robustness of the protection in the ring topology.
- Figure 1 is a schematic diagram of service protection by using channel shared protection mode when a single ODUk alarm occurs on the ring network;
- Figure 2 is a schematic diagram of the service protection that cannot be used by the channel sharing protection mode when multiple ODUk alarms occur on the ring network;
- FIG. 3 is a schematic diagram of configuring the working ODUk and the protection ODUk in the same optical channel;
- FIG. 4 is a schematic diagram of configuring the working ODUk and the protection ODUk in different optical channels;
- FIG. 5 is an alarm generated when the ring OTN is detected in the present invention.
- FIG. 6 is a flowchart of a processing method when an alarm in a ring OTN is lost in the present invention;
- FIG. 7 is a structural block diagram of an apparatus for processing an alarm in a ring OTN according to the present invention;
- FIG. 8 is a schematic diagram of a fault in a working channel of a service segment in which the service 1 is located according to the embodiment of the present invention
- FIG. 9 is a schematic diagram of a fault in a working channel of a service segment in which the service 1 and the service 2 are located in the embodiment of the present invention
- FIG. 10 is a schematic diagram of a span failure occurring in a span of service 2 according to an embodiment of the present invention.
- the ODUk signal can be crossed into any wavelength channel in any direction.
- the working ODUk can be separated from the protected ODUk and configured in different optical channels, as shown in Figure 4.
- the invention utilizes the crossover capability of any wavelength of the ODUk in any direction.
- the four node states are in an idle state, the A-direction switching state, the B-direction switching state, and the through-state state, and the fifth is extended.
- the state of the node is one-to-one 1+1 switching state.
- the protection channel resource base that is reversed from the service on the ring based on the channel sharing protection protocol
- the use of the 1+1 protection protocol for the protection channel resources in the same direction as the service is added.
- the core idea of the present invention is: When only the working ODUk alarm is detected, the 1+1 protection of the same direction as the service is triggered, and the shared protection resource in the opposite direction is not switched. In this way, multiple alarms on a certain direction ring can be respectively protected with 1+1 protection, so that protection resource conflicts are not caused.
- the protection ODUk also detects an alarm or detects an OMS layer alarm, the 1+1 protection is invalid.
- the channel sharing protection needs to be triggered to occupy the shared protection resources of the reverse direction ring.
- FIG. 5 is a flowchart of a processing method when an alarm is generated in a ring OTN according to the present invention, which mainly includes the following steps:
- Step S301 Detecting alarm information in the ring optical transport network in real time
- Step S302 Determine the type of the detected alarm information.
- step S303 is performed, and only one or more protections are generated in the ring network.
- step S304 is performed.
- step S305 is performed.
- Step S303 Perform a 1+1 protection protocol switching process on the service carried on the working channel that generates the alarm, and the upper and lower nodes of the span in which the ODUk alarm is located are in the 1+1 switching state, and the process goes to step S306.
- Step S304 Filter the alarm, and go to step S308.
- Step S305 The switching process of the triggering channel sharing protection protocol is performed.
- the node in the span of the OMS alarm is in the A-direction switching state or the B-direction switching state, and the node through which the protection channel passes is in the through state, and the process goes to step S308.
- Step S306 If an ODMk alarm is generated in the ring network, and an OMS alarm is generated in the ring network, or the protection ODUk corresponding to the ODUk that has generated the alarm also generates an alarm, perform The next step.
- Step S307 The switching process of the triggering channel sharing protection protocol, the OMS alarm or the protection node of the ODUk alarm is in the A-direction switching state or the B-direction switching state, and the node through which the protection channel passes is in the through state, and the process goes to step S308.
- Step S308 the process ends.
- FIG. 6, is a processing party when the alarm in the ring OTN is detected disappears in the present invention.
- the method flow chart mainly includes the following steps:
- Step S401 Real-time detection of alarm disappearance information in the ring optical transport network
- Step S402 determining the type of the detected alarm disappearance information, when detecting the working ODUk alarm disappearing information, performing step S403, and when detecting the protection ODUk alarm disappearing information, performing step S406, when detecting the OMS alarm disappearing information, Step S407 is performed.
- Step S403 determining whether the corresponding protection ODUk is in a no-fault state at this time, if yes, executing step S404, otherwise, executing step S405.
- Step S404 Perform a reply process of the 1+1 protection protocol for the service carried on the protection channel (Revert process, release protection, and resume the process to the working resource), and each node on the protection channel returns to the idle state, and the process goes to step S408.
- Step S405 The reply channel sharing protection protocol is returned, and each node on the protection channel returns to the idle state, and the process goes to step S408.
- Step S406 Update only the status of the protection group, and go to step S408.
- Step S407 The reply channel sharing protection protocol is returned, and each node on the protection channel returns to the idle state, and the process goes to step S408.
- Step S408 the process ends.
- the present invention further provides an alarm processing device in a ring OTN.
- FIG. 7 the figure is a structural block diagram of an apparatus for processing an alarm in a ring OTN according to the present invention, which mainly includes alarm detection.
- the alarm disappearance detecting module is configured to detect the alarm message information in the ring optical transport network in real time and send it to the switching trigger module.
- the switching triggering module performs the switching process of the 1+1 protection protocol on the service carried on the working channel that generates the alarm when the alarm detection module detects that only the working ODUk alarm is generated in the ring network; In the case of an ODUk alarm, if the alarm detection module detects that an OMS alarm is generated in the ring network, or the protection ODUk corresponding to the ODUk that has generated the alarm also generates an alarm, it is used to trigger the channel sharing protection protocol. Switching process. When the alarm disappearance detecting module detects that the working ODUk alarm is lost, the switching triggering module is further configured to determine whether the corresponding protection ODUk is in a faultless state, and if so, perform a 1+1 protection protocol on the service carried on the protection channel respectively. The reply process, otherwise, triggers the reply process of the channel sharing protection protocol; when the alarm disappearance detecting module detects that the OMS alarm disappears, the switching trigger module is also used to trigger the reply process of the channel sharing protection protocol.
- the method and the device of the present invention can simultaneously perform 1+1 protection on multiple ODUk services without increasing link resources, and provide channel separation protection for link separation under the condition that protection resources are invalid, thereby greatly Enhances the robustness of protection in the ring topology.
- the node AF forms a ring network topology, and there is a pair of services between the node B and the node C, which is recorded as the service 1, and a service exists between the nodes C and D, which is recorded as the service 2,
- the following operations are performed:
- Step S601 After detecting the alarm, the node C enters the alarm analysis process, and determines that only the working channel has a fault. Therefore, the 1+1 protection mechanism is sent, and the protection protocol is sent to the peer node B, and the node performs 1+1 switching.
- Step S602 Node B receives the protection protocol of node C, triggers a 1+1 switching state, and sends a response protocol to node C.
- Step S603 the node C receives the response protocol, and the system is in a steady state.
- Step S604 After detecting the alarm, the node D enters the alarm analysis process, and determines that only the working channel has a fault. Therefore, the 1+1 protection mechanism is sent, and the protection protocol is sent to the peer node C, and the node performs 1+1 switching.
- Step S605 Node C receives the protection protocol of node D, triggers a 1+1 switching state, and sends a response protocol.
- Step S606 the node D receives the response protocol, and the system is in a steady state.
- Step S607 Node D detects the OMS alarm, enters the alarm analysis process, triggers the channel sharing protection mechanism, and sends the protection protocol to the topology. Other nodes within.
- Step S608 After the channel sharing protocol in the system is stable, the node C is in the B-direction switching state, the node D is in the A-direction switching state, and the node A, the node B, the node E, and the node F are respectively in a through state.
- the present invention can effectively deal with the problem that the protection protection fails when two or more working channels have both faults in the channel sharing protection, and improves the network survivability without increasing network resources.
- the technical solution of the present invention can solve the problem that the channel sharing protection fails when multiple ODUk alarms in the ring network occur at the same time in the prior art without increasing the link resources.
- Multiple ODUk services are simultaneously protected by 1+1, and the channel sharing protection of the link separation is provided under the condition that the protection resources are invalid, thereby greatly enhancing the robustness of the protection in the ring topology.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computing Systems (AREA)
- Small-Scale Networks (AREA)
- Optical Communication System (AREA)
- Time-Division Multiplex Systems (AREA)
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/380,866 US8755686B2 (en) | 2009-07-02 | 2009-09-23 | Method and device for processing failure of multi-span working channel in ring optical transmission network |
JP2012517998A JP5317378B2 (ja) | 2009-07-02 | 2009-09-23 | リング型光伝送ネットワークにマルチスパンセクション動作チャンネル故障を処理する方法及び装置 |
BRPI0924971-0A BRPI0924971B1 (pt) | 2009-07-02 | 2009-09-23 | Método e dispositivo para processar falha de multicanal de trabalho para amplificação em rede de transmissão óptica em anel |
KR1020127000335A KR101399404B1 (ko) | 2009-07-02 | 2009-09-23 | 링형 광 전송 네트워크에서 멀티 스팬 작업 채널 고장을 처리하는 방법 및 장치 |
EP09846710.3A EP2451094B1 (en) | 2009-07-02 | 2009-09-23 | Method and device for processing failure of multi-span working channel in ring optical transmission network |
ES09846710.3T ES2683023T3 (es) | 2009-07-02 | 2009-09-23 | Procedimiento y dispositivo para procesar fallos de un canal de trabajo de múltiples tramos en una red óptica de transmisión en anillo |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200910148740A CN101599798B (zh) | 2009-07-02 | 2009-07-02 | 环形光传送网中处理多跨段工作通道故障的方法及装置 |
CN200910148740.9 | 2009-07-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011000181A1 true WO2011000181A1 (zh) | 2011-01-06 |
Family
ID=41421072
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2009/074146 WO2011000181A1 (zh) | 2009-07-02 | 2009-09-23 | 环形光传送网中处理多跨段工作通道故障的方法及装置 |
Country Status (8)
Country | Link |
---|---|
US (1) | US8755686B2 (zh) |
EP (1) | EP2451094B1 (zh) |
JP (1) | JP5317378B2 (zh) |
KR (1) | KR101399404B1 (zh) |
CN (1) | CN101599798B (zh) |
BR (1) | BRPI0924971B1 (zh) |
ES (1) | ES2683023T3 (zh) |
WO (1) | WO2011000181A1 (zh) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014015502A1 (zh) * | 2012-07-26 | 2014-01-30 | 华为技术有限公司 | 一种光传送网中共享保护的方法、第一节点设备及*** |
CN103079022B (zh) * | 2013-01-10 | 2015-05-06 | 山东康威通信技术股份有限公司 | 专网通信内部双网语音告警物理隔离控制***及方法 |
CN105744385B (zh) * | 2014-12-10 | 2020-06-16 | 中兴通讯股份有限公司 | 一种光突发传送网的传输方法和*** |
CN106452817B (zh) * | 2015-08-12 | 2019-05-31 | 中国电信股份有限公司 | 保护配置管理方法和*** |
CN106911377A (zh) * | 2015-12-23 | 2017-06-30 | ***通信集团内蒙古有限公司 | 一种td-lte业务的保护方法及*** |
CN107800601B (zh) * | 2016-09-06 | 2021-10-29 | 中兴通讯股份有限公司 | 环网倒换的保护方法、装置及*** |
CN109639549B (zh) * | 2017-10-09 | 2021-11-05 | 中兴通讯股份有限公司 | 一种环网保护的实现方法和环网保护*** |
US10951654B2 (en) | 2018-08-30 | 2021-03-16 | At&T Intellectual Property 1, L.P. | System and method for transmitting a data stream in a network |
CN112532532B (zh) * | 2020-11-16 | 2022-08-12 | 烽火通信科技股份有限公司 | 业务返回方法、装置、设备及可读存储介质 |
WO2024030135A1 (en) * | 2022-08-05 | 2024-02-08 | Altiostar Networks, Inc. | System and method for traffic distribution with optical switch |
CN116016139A (zh) * | 2023-01-05 | 2023-04-25 | 中国联合网络通信集团有限公司 | 保护倒换方法和装置、电子设备、存储介质 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040111651A1 (en) * | 2002-12-05 | 2004-06-10 | Biswanath Mukherjee | Method and apparatus for guaranteeing a failure-recovery time in a wavelength-division multiplexing network |
CN1713548A (zh) * | 2004-06-22 | 2005-12-28 | 中兴通讯股份有限公司 | 环形同步数字体系光传送网中光自动关断功能的实现方法 |
CN1808950A (zh) * | 2005-01-19 | 2006-07-26 | 华为技术有限公司 | 一种复用段保护环带宽动态调整的方法 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7046619B2 (en) * | 2000-11-07 | 2006-05-16 | Ciena Corporation | Method and system for bi-directional path switched network |
US20040057724A1 (en) * | 2001-01-04 | 2004-03-25 | Markku Oksanen | Maintaining quality of packet traffic in optical network when a failure of an optical link occurs |
ITMI20010382A1 (it) * | 2001-02-26 | 2002-08-26 | Cit Alcatel | Metodo per gestire la transizione tra un guasto tipo ring ed un guasto tipo span in reti per telecomunicazioni con topologia ad anello |
US20030009599A1 (en) * | 2001-05-04 | 2003-01-09 | Appian Communications, Inc. | Protecting ring network data |
US7106968B2 (en) * | 2001-07-06 | 2006-09-12 | Optix Networks Inc. | Combined SONET/SDH and OTN architecture |
US7715713B1 (en) * | 2002-09-30 | 2010-05-11 | Meriton Networks Us Inc. | Method and apparatus for providing multiple optical channel protection switching mechanisms in optical rings |
EP1411665A1 (en) * | 2002-10-18 | 2004-04-21 | Alcatel | Method and apparatus for shared protection in an optical transport network ring based on the ODU management |
US20040109408A1 (en) * | 2002-12-06 | 2004-06-10 | Packetlight Networks, Ltd. | Fast protection for TDM and data services |
IL163557A (en) * | 2004-08-16 | 2010-05-31 | Eci Telecom Ltd | Method and system for hybrid protection in optical networks |
CN1753342B (zh) * | 2004-09-21 | 2010-12-08 | 华为技术有限公司 | 光网络中保护倒换的实现方法 |
JP4984797B2 (ja) | 2006-09-29 | 2012-07-25 | 富士通株式会社 | 光ネットワークシステム |
CN101145870B (zh) * | 2007-07-31 | 2012-07-18 | 中兴通讯股份有限公司 | 一种光环形网络中业务无中断扩容的方法 |
CN101431371B (zh) * | 2007-11-09 | 2011-12-21 | 华为技术有限公司 | 一种光网络设备信道保护倒换的方法及装置 |
-
2009
- 2009-07-02 CN CN200910148740A patent/CN101599798B/zh active Active
- 2009-09-23 US US13/380,866 patent/US8755686B2/en active Active
- 2009-09-23 EP EP09846710.3A patent/EP2451094B1/en active Active
- 2009-09-23 BR BRPI0924971-0A patent/BRPI0924971B1/pt active IP Right Grant
- 2009-09-23 ES ES09846710.3T patent/ES2683023T3/es active Active
- 2009-09-23 JP JP2012517998A patent/JP5317378B2/ja active Active
- 2009-09-23 WO PCT/CN2009/074146 patent/WO2011000181A1/zh active Application Filing
- 2009-09-23 KR KR1020127000335A patent/KR101399404B1/ko active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040111651A1 (en) * | 2002-12-05 | 2004-06-10 | Biswanath Mukherjee | Method and apparatus for guaranteeing a failure-recovery time in a wavelength-division multiplexing network |
CN1713548A (zh) * | 2004-06-22 | 2005-12-28 | 中兴通讯股份有限公司 | 环形同步数字体系光传送网中光自动关断功能的实现方法 |
CN1808950A (zh) * | 2005-01-19 | 2006-07-26 | 华为技术有限公司 | 一种复用段保护环带宽动态调整的方法 |
Also Published As
Publication number | Publication date |
---|---|
KR101399404B1 (ko) | 2014-05-27 |
CN101599798B (zh) | 2012-10-10 |
EP2451094B1 (en) | 2018-05-30 |
EP2451094A4 (en) | 2017-03-22 |
EP2451094A1 (en) | 2012-05-09 |
US20120099853A1 (en) | 2012-04-26 |
US8755686B2 (en) | 2014-06-17 |
JP5317378B2 (ja) | 2013-10-16 |
JP2012531845A (ja) | 2012-12-10 |
BRPI0924971B1 (pt) | 2020-11-03 |
ES2683023T3 (es) | 2018-09-24 |
CN101599798A (zh) | 2009-12-09 |
KR20120027469A (ko) | 2012-03-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2011000181A1 (zh) | 环形光传送网中处理多跨段工作通道故障的方法及装置 | |
JP4760504B2 (ja) | ネットワークシステムおよび通信装置 | |
US8179788B2 (en) | Protection switching method and apparatus for use in ring network | |
JP5471240B2 (ja) | スイッチ装置、リングネットワークシステム、通信制御方法、および装置のプログラム | |
WO2007128176A1 (fr) | Procédé de commutation de service et noeud de réseau associé | |
KR20120040261A (ko) | 링 네트워크 토폴로지 정보를 갱신하기 위한 방법, 장치 및 시스템 | |
GB2471761A (en) | Fault recovery path reconfiguration in ring networks | |
EP1784045A1 (en) | System and method for fast layer 2 protection in passive optical networks | |
WO2005022782A1 (fr) | Structure d'echange et procede de configuration de connexion entre reseaux optiques | |
CN101436975B (zh) | 一种在环网中实现快速收敛的方法、装置及*** | |
WO2012079313A1 (zh) | 一种链路保护方法及*** | |
CN101459565A (zh) | 一种复用段保护业务的恢复方法、装置和网络节点 | |
WO2011150739A1 (zh) | 一种otn网络中共享保护的方法、***和节点设备 | |
US9197441B2 (en) | Method and system for service protection | |
JP4562081B2 (ja) | 光クロスコネクト装置と伝送装置の連係方式 | |
WO2010133065A1 (zh) | 基于无源光网络的保护***和方法 | |
CN100377506C (zh) | 防错连的方法 | |
WO2011017863A1 (zh) | 光数据单元环路共享保护控制方法与装置 | |
CN101667863B (zh) | 一种复用段共享环网保护中增加通道告警触发的装置及方法 | |
KR101538348B1 (ko) | 이더넷 노드의 검출 프레임 타임아웃 지속시간을 설정하는 방법 및 시스템 | |
CN101262400A (zh) | 一种桥模式弹性分组环冗余保护的方法和*** | |
JP2005159546A (ja) | ネットワーク装置 | |
JP3689062B2 (ja) | 上位ノードおよびネットワークおよびプログラムおよび記録媒体 | |
JP2002262316A (ja) | 光通信ネットワーク・ノード装置 | |
JP2009194623A (ja) | イーサネット光アクセス装置およびイーサネット保守冗長方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09846710 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13380866 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012517998 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2009846710 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 6/CHENP/2012 Country of ref document: IN |
|
ENP | Entry into the national phase |
Ref document number: 20127000335 Country of ref document: KR Kind code of ref document: A |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: PI0924971 Country of ref document: BR |
|
ENP | Entry into the national phase |
Ref document number: PI0924971 Country of ref document: BR Kind code of ref document: A2 Effective date: 20111229 |