CN101132237A - Optical network self-healing recovery method and system thereof - Google Patents
Optical network self-healing recovery method and system thereof Download PDFInfo
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- CN101132237A CN101132237A CN 200610111482 CN200610111482A CN101132237A CN 101132237 A CN101132237 A CN 101132237A CN 200610111482 CN200610111482 CN 200610111482 CN 200610111482 A CN200610111482 A CN 200610111482A CN 101132237 A CN101132237 A CN 101132237A
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- receiving device
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- 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
Abstract
This invention discloses a self-cured resuming method for optical networks including: 1, monitoring and resuming a faulty laser transceiver of an original faulty channel and cutting off data transmission of said channel, B, releasing a standby laser transceiver replacing said faulty device and opening the channel to transmit data by the resumed faulty laser transceiver. This invention also discloses a self-cured resuming system of the optical network.
Description
Technical field
The present invention relates to the self-healing recovery system of the self-healing recovery method and the optic network of optic network technical field, particularly optic network.
Background technology
In recent years, along with the development of broadband services, people increase sharply to the demand of wideband switch-in business, and in order to satisfy the demand of these high bandwidths, big capacity access, people have selected light incoming communication network.Yet the price comparison costliness of some Primary Components in the normal optical communication network, therefore cost-effective passive optical network (PON) has appearred, for example based on the passive optical network (APON) of ATM(Asynchronous Transfer Mode), broadband passive optic network (BPON), passive optical network (EPON), G bit passive optic network (GPON), Wavelenght division multiplexing passive optical network (WDM-PON) and optical code division multiple access passive optical network (OCDMA-PON) etc. based on Ethernet.In these numerous PON systems, WDM-PON is with its high security, the huge amount of information of every user and the characteristics that are easy to upgrade and extremely people's favor.
In general, in passive optical network system, use trunk fiber to be connected as professional provider's central office (CO) between the distant-end node (RN) in the neighbourhood of user location with being arranged on, distant-end node then is connected by distribute type optical fiber with the Optical Network Terminal (ONT) of conduct business consumption side.For for simplicity, below ONT and optical network unit (ONU) are called ONT.Because what distant-end node was placed is passive optical component, has significantly reduced administrative structure and maintenance cost like this.
That shown in Figure 1 is common WDM-PON.In this system, the mac controller of CO sends downlink data to generating laser 1～n respectively, the data-modulated of the different passages that generating laser 1～n will receive is to the light signal of different wave length λ 1～λ n, the light signal of a plurality of wavelength is transferred to RN by single fiber after multiplexing demultiplexing device is multiplexing then; By the demultiplexing of multiplexing demultiplexing device, the optical transmission of each wavelength X i is arrived the laser pickoff of corresponding ONTi again; The downlink data that laser pickoff obtains the light signal rectification of different passages sends to the mac controller of ONT.The transmission of upstream data and receiving similarly, just the direction of upstream data is from ONT to CO, and is different with downlink data, repeats no more here.In the data transmit-receive process, corresponding ONT can only use the wavelength of distributing to it to send upstream data and downlink data receiving.
Yet in above-mentioned WDM-PON system, the generating laser that is positioned at CO can increase along with the increase of port number or number of wavelengths, therefore the generating laser reliability of operation has been proposed very high request.As shown in Figure 2, when certain generating laser i breaks down, will certainly cause this passage λ i to use.A kind of method of head it off adopts redundant standby adjustable laser reflector to protect exactly.When passage λ i breaks down, switch, promptly utilize the adjustable laser reflector to send the data of faulty channel λ i.But after switching end; if former fault generating laser i recovers; owing to the adjustable laser reflector is not reverted to the state that can be used for switching; but can not utilize the adjustable laser reflector to switch in the time of can causing other generating laser to break down so; waste the protection efficient of redundant standby adjustable laser reflector greatly, influenced the normal transmitting-receiving of downlink data.
Equally, in above-mentioned WDM-PON system, the laser pickoff that is positioned at CO can increase along with the increase of port number or number of wavelengths, therefore the laser pickoff reliability of operation has also been proposed very high request.As shown in Figure 3, when certain laser pickoff i breaks down, will certainly cause this passage λ i to use.Equally, can adopt redundant standby adjustable laser receiver to protect.When passage λ i breaks down, switch, promptly utilize redundant adjustable laser receiver to receive the data of faulty channel λ i.But after switching end; if former fault laser pickoff i recovers; owing to the adjustable laser receiver is not reverted to the state that can be used for switching; but can not utilize this adjustable laser receiver to switch in the time of can causing other laser pickoff to break down so; waste the protection efficient of redundant standby adjustable laser receiver greatly, influenced the normal transmitting-receiving of upstream data.
In addition, also can there be the problems referred to above at ONT.Therefore how after fault generating laser/receiver recovers, the adjustable laser emitter/receiver to be discharged from user mode, switch when breaking down for other generating laser/receiver, improve the utilance of adjustable laser emitter/receiver, become a technical problem of being badly in need of solution.
Summary of the invention
In view of this, the present invention proposes a kind of self-healing recovery method of optic network, in order to improve utilance such as standby laser transmitting-receiving devices such as adjustable laser reflector and adjustable laser receivers.Another object of the present invention is to propose a kind of self-healing recovery system of optic network.
According to above-mentioned purpose, the invention provides a kind of self-healing recovery method of optic network, this method comprises:
Steps A: the fault laser transmitting-receiving device that monitors former fault passage recovers, and cuts off the data transmit-receive of this passage;
Step B: discharge the standby laser transmitting-receiving device that replaces described fault laser transmitting-receiving device, open described passage, by the fault laser transmitting-receiving device transceive data of having recovered.
Alternatively, described fault laser transmitting-receiving device is a generating laser, and described standby laser transmitting-receiving device is the adjustable laser reflector.
Alternatively, described fault laser transmitting-receiving device is a laser pickoff, and described standby laser transmitting-receiving device is the adjustable laser receiver.
The present invention also provides a kind of self-healing recovery system of optic network, comprising: at least one laser transmitting-receiving device, standby laser transmitting-receiving device;
Mac controller, being used for monitoring former described at least one laser transmitting-receiving device fault laser transmitting-receiving device recovers, and the data transmit-receive that cuts off this fault laser transmitting-receiving device respective channel, discharge described standby laser transmitting-receiving device, open described passage, by the fault laser transmitting-receiving device transceive data of having recovered.
Described mac controller further comprises the channel monitoring module, is used to monitor described fault laser transmitting-receiving device and recovers, and the notice mac controller.
Preferably, this system further comprises multiplexing demultiplexing device and Light Coupled Device; Described laser transmitting-receiving device is connected with an end of this multiplexing demultiplexing device, and the other end of described standby laser transmitting-receiving device and this multiplexing demultiplexing device is connected in Light Coupled Device.
Preferably, this system further comprises multiplexing demultiplexing device and Light Coupled Device; Described standby laser transmitting-receiving device is connected with an end of multiplexing demultiplexing device with the Light Coupled Device of each road laser transmitting-receiving device by each road, and through behind the multiplexing demultiplexing device, multichannel is photosynthetic to be one road light.
Described laser transmitting-receiving device is a generating laser, and described standby laser transmitting-receiving device is the adjustable laser reflector.
Described laser transmitting-receiving device is a laser pickoff, and described standby laser transmitting-receiving device is the adjustable laser receiver.
From such scheme as can be seen, because the present invention is behind the routing restoration that monitors former fault laser transceiver spare correspondence, cut off the reception/transmission of this passage, discharge the standby laser transmitting-receiving device that replaces fault laser transmitting-receiving device then, and open this passage carries out data by the fault laser transmitting-receiving device that has recovered reception/transmission.By enforcement of the present invention; make and after fault generating laser/receiver recovers, standby generating laser/receiver is discharged from user mode; switch when breaking down for other generating laser/receiver; thereby improve the utilance of standby generating laser/receiver, and improved the efficient that protection is switched.
Description of drawings
Fig. 1 is the structural representation of WDM-PON system;
Schematic diagram when Fig. 2 breaks down for generating laser;
Schematic diagram when Fig. 3 breaks down for laser pickoff;
Fig. 4 is a kind of system configuration schematic diagram of the embodiment of the invention;
Fig. 5 is the schematic flow sheet of the embodiment of the invention;
Fig. 6 is another system configuration schematic diagram of the embodiment of the invention;
Fig. 7 is another schematic flow sheet of the embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in more detail by the following examples.
Be that example illustrates enforcement of the present invention with CO as data transmission end and receiving terminal respectively below.ONT as the situation of data transmission end and receiving terminal similarly.
Fig. 4 be in the embodiment of the invention CO as the system configuration schematic diagram of data transmission end.
As shown in Figure 4, this system comprises mac controller, a n generating laser, standby adjustable laser reflector n+1, multiplexing demultiplexing device.
Wherein, when mac controller monitors the fault generating laser i recovery of former fault passage λ i, cut off the transmission of the downlink data of passage λ i, discharge the adjustable laser reflector n+1 that acts on behalf of fault generating laser i that had before taken, open the transmission of passage λ i downlink data then, make it send data, thereby finish self-healing recovery by the fault generating laser i that has recovered.
Mac controller may further include the channel monitoring module, and whether the fault generating laser i that this channel monitoring module is used to monitor former fault passage λ i recovers, when the fault generating laser i that monitors former fault passage λ i recovers, and the notice mac controller.
In this system, adjustable laser reflector n+1 one end and generating laser 1～n are parallel to mac controller.This system also comprises Light Coupled Device A, and the output of the output of multiplexing demultiplexing device and adjustable laser reflector n+1 is connected to the input of Light Coupled Device A, the output after the Light Coupled Device coupling of the light signal of both output.
In addition, can also adopt the mode of all placing an optical coupler A between each generating laser i and the multiplexing demultiplexing device, adjustable laser reflector n+1 is connected with the input of multiplexing demultiplexing device by corresponding optical coupler A with each generating laser.The every road light signal that is produced by generating laser or adjustable laser reflector is input to multiplexing demultiplexing device through optical coupler, exports after the process multiplexing demultiplexing device is combined into one road light.
Fig. 5 is the schematic flow sheet of data transmission end self-healing recovery in the embodiment of the invention.With reference to Fig. 5, may further comprise the steps in transmitting terminal self-healing recovery process:
Step 106, self-healing recovery finishes.
Fig. 6 be in the embodiment of the invention CO as the system configuration schematic diagram of data receiver.
As shown in Figure 6, this system comprises mac controller, a n laser pickoff, standby adjustable laser receiver n+1, multiplexing demultiplexing device.
When wherein mac controller monitors the fault laser pickoff i recovery of former fault passage λ i, cut off the reception of the upstream data of passage λ i, discharge the adjustable laser receiver n+1 that had before taken, open the reception of the upstream data of passage λ i then, make it receive data, thereby finish self-healing recovery by the laser pickoff i that has recovered.
Mac controller may further include the channel monitoring module, and whether the fault laser pickoff i that this channel monitoring module is used to monitor former fault passage λ i recovers, when the fault laser pickoff i that monitors former fault passage λ i recovers, and the notice mac controller.
In this system, adjustable laser receiver n+1 one end and laser pickoff 1～n are parallel to mac controller.This system also comprises Light Coupled Device A, the input of the input of multiplexing demultiplexing device and adjustable laser receiver n+1 is connected to the output of Light Coupled Device A, imports the light signal of this system and import multiplexing demultiplexing device and adjustable laser receiver n+1 respectively behind the Light Coupled Device partial wave.
In addition, can also adopt the mode of all placing an optical coupler A between each laser pickoff i and the multiplexing demultiplexing device, adjustable laser receiver n+1 is connected with the output of multiplexing demultiplexing device by corresponding optical coupler A with each laser pickoff.Behind the light signal input multiplexing demultiplexing device, behind the multiplexing demultiplexing device demultiplexing, form light signal λ 1～λ n on each road, then through optical coupler input laser pickoff or adjustable laser receiver n+1.
Fig. 7 is the schematic flow sheet of data receiver self-healing recovery in the embodiment of the invention.With reference to Fig. 7, may further comprise the steps in receiving terminal self-healing recovery process:
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the self-healing recovery method of an optic network is characterized in that, this method comprises:
Steps A: the fault laser transmitting-receiving device that monitors former fault passage recovers, and cuts off the data transmit-receive of this passage;
Step B: discharge the standby laser transmitting-receiving device that replaces described fault laser transmitting-receiving device, open described passage, by the fault laser transmitting-receiving device transceive data of having recovered.
2. method according to claim 1 is characterized in that, described fault laser transmitting-receiving device is a generating laser, and described standby laser transmitting-receiving device is the adjustable laser reflector.
3. method according to claim 1 is characterized in that, described fault laser transmitting-receiving device is a laser pickoff, and described standby laser transmitting-receiving device is the adjustable laser receiver.
4. the self-healing recovery system of an optic network is characterized in that, this system comprises: at least one laser transmitting-receiving device, standby laser transmitting-receiving device;
Mac controller, being used for monitoring described at least one laser transmitting-receiving device fault laser transmitting-receiving device recovers, and the data transmit-receive that cuts off this fault laser transmitting-receiving device respective channel, discharge described standby laser transmitting-receiving device, open described passage, by the fault laser transmitting-receiving device transceive data of having recovered.
5. system according to claim 4 is characterized in that described mac controller further comprises the channel monitoring module, is used to monitor described fault laser transmitting-receiving device and recovers, and the notice mac controller.
6. system according to claim 4 is characterized in that this system further comprises multiplexing demultiplexing device and Light Coupled Device;
Described laser transmitting-receiving device is connected with an end of this multiplexing demultiplexing device, and the other end of described standby laser transmitting-receiving device and this multiplexing demultiplexing device is connected in Light Coupled Device.
7. system according to claim 4 is characterized in that this system further comprises multiplexing demultiplexing device and Light Coupled Device;
Described standby laser transmitting-receiving device is connected with an end of multiplexing demultiplexing device with the Light Coupled Device of each road laser transmitting-receiving device by each road, and through behind the multiplexing demultiplexing device, multichannel is photosynthetic to be one road light.
8. according to each described system in the claim 4～7, it is characterized in that described laser transmitting-receiving device is a generating laser, described standby laser transmitting-receiving device is the adjustable laser reflector.
9. according to each described system in the claim 4～7, it is characterized in that described laser transmitting-receiving device is a laser pickoff, described standby laser transmitting-receiving device is the adjustable laser receiver.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610111482 CN101132237A (en) | 2006-08-22 | 2006-08-22 | Optical network self-healing recovery method and system thereof |
| PCT/CN2007/070533 WO2008025292A1 (en) | 2006-08-22 | 2007-08-21 | Self-healing recovery method and system of optical network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610111482 CN101132237A (en) | 2006-08-22 | 2006-08-22 | Optical network self-healing recovery method and system thereof |
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| Publication Number | Publication Date |
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| CN101132237A true CN101132237A (en) | 2008-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610111482 Pending CN101132237A (en) | 2006-08-22 | 2006-08-22 | Optical network self-healing recovery method and system thereof |
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| Country | Link |
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| CN (1) | CN101132237A (en) |
| WO (1) | WO2008025292A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102907022A (en) * | 2010-06-03 | 2013-01-30 | 瑞典爱立信有限公司 | Optical network node with restoration path |
| CN104422989A (en) * | 2013-08-26 | 2015-03-18 | 华为技术有限公司 | Optical assembly, optical isolator assembly and light emitting system |
| CN112034564A (en) * | 2019-06-03 | 2020-12-04 | 华为技术有限公司 | Light source switching method and device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002009801A (en) * | 2000-06-26 | 2002-01-11 | Nec Miyagi Ltd | System and method for verifying operation in self- healing ring system |
| CN100452679C (en) * | 2002-12-31 | 2009-01-14 | 北京邮电大学 | Method and device for elastic protection conversion in Ethernet passive optic network system |
| KR100547709B1 (en) * | 2003-07-07 | 2006-01-31 | 삼성전자주식회사 | Self-Healing Wavelength Division Multiplexing Passive Optical Subscriber Network |
| KR100605899B1 (en) * | 2004-01-09 | 2006-08-02 | 삼성전자주식회사 | Wavelength Injected Self-healing Wavelength Division Multiplexed Passive Optical Network |
| CN100454879C (en) * | 2005-01-14 | 2009-01-21 | 华为技术有限公司 | Self recovery method and system in shared protection for optical channels |
| CN100369419C (en) * | 2005-07-14 | 2008-02-13 | 广东省电信有限公司研究院 | Method for realizing connected reinforced main-apparatus protection in automatic exchange optical network |
| CN1852052B (en) * | 2005-12-09 | 2010-04-14 | 华为技术有限公司 | Optical-fiber line fault down stream alarm inhibiting method, apparatus and system |
| CN100518035C (en) * | 2006-05-09 | 2009-07-22 | 中兴通讯股份有限公司 | Data-communication network system of optical network and its realizing method |
-
2006
- 2006-08-22 CN CN 200610111482 patent/CN101132237A/en active Pending
-
2007
- 2007-08-21 WO PCT/CN2007/070533 patent/WO2008025292A1/en active Application Filing
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102907022A (en) * | 2010-06-03 | 2013-01-30 | 瑞典爱立信有限公司 | Optical network node with restoration path |
| CN102907022B (en) * | 2010-06-03 | 2016-08-03 | 瑞典爱立信有限公司 | Optical network node with restoration path |
| CN104422989A (en) * | 2013-08-26 | 2015-03-18 | 华为技术有限公司 | Optical assembly, optical isolator assembly and light emitting system |
| CN104422989B (en) * | 2013-08-26 | 2018-03-06 | 华为技术有限公司 | Optical assembly, Optical isolator module and light emission system |
| CN112034564A (en) * | 2019-06-03 | 2020-12-04 | 华为技术有限公司 | Light source switching method and device |
| WO2020244302A1 (en) * | 2019-06-03 | 2020-12-10 | 华为技术有限公司 | Method and device for light source switching |
| CN114675382A (en) * | 2019-06-03 | 2022-06-28 | 华为技术有限公司 | Light source switching method and device |
| US11877368B2 (en) | 2019-06-03 | 2024-01-16 | Huawei Technologies Co., Ltd. | Optical source switching method and apparatus |
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| Publication number | Publication date |
|---|---|
| WO2008025292A1 (en) | 2008-03-06 |
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Application publication date: 20080227 |