CN101166069A - Method and system for automatic switching of optical module in optical transmission network - Google Patents
Method and system for automatic switching of optical module in optical transmission network Download PDFInfo
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- CN101166069A CN101166069A CNA2007101470790A CN200710147079A CN101166069A CN 101166069 A CN101166069 A CN 101166069A CN A2007101470790 A CNA2007101470790 A CN A2007101470790A CN 200710147079 A CN200710147079 A CN 200710147079A CN 101166069 A CN101166069 A CN 101166069A
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Abstract
This invention discloses a method and a system for switching optical modules automatically in a light transmission network, in which, the method includes: 1, monitoring the working state of a primary or a standby optical module, 2, when monitoring that the primary module is abnormal, it closes the laser of the primary optical module and switches its transmission service to the standby module.
Description
Technical field
The present invention relates to optical communication field, relate more specifically to a kind of optical module automatic switching method and system that is used for optical transport network.
Background technology
At present, synchronous digital hierarchy (Synchronous Digital Hierarchy is called for short SDH) optical transport network has obtained increasingly extensive application at communication field, and along with the continuous growth of social demand, the technical merit of SDH optical transport network is also in quick progress.Simultaneously, the user all has higher requirement to the stability of equipment, the cost of equipment and the failure recovery time of equipment etc.The formulation of relevant criterion is also being brought in constant renewal in therewith; wherein; about optical interface APS function; in the G.841 number suggestion " type and the characteristic of SDH network protection architecture " of (International Telecommunication Union TelecommunicationStandardization Secto is called for short ITU-T) of the branch of the relevant telecommunication standard of International Telecommunications Union, made specific description.G.841 mainly provide SDH network protection architecture based on the different implementation methods on the mechanical floor, the protection that protection entity scope can be from single SDH multiplexing node to the end-to-end and whole SDH end-to-end path of part SDH.Implementation method physically can comprise node cycle or node line chain, has pointed out the guideline of network object, framework, application function, switching criterion, agreement and algorithm in the protection classification.
About the implementation method of optical interface APS, mainly be according to standard at present, physically can be by main with, standby board and mainly realize with, standby optical fiber link.The patent (CN200310103225) that name is called " optical interface automatic protection switching arrangement " provides concrete implementation method.The implementation method of this technology himself advantage is arranged, but it has taken extra device resource and fiber resource, development cost, equipment cost, and maintenance cost all higher, less economical.
Yet, add up the fault that optical interface occurs in the present fiber-optic communication project application, get rid of the optical fiber link fault, in the single-plate grade fault, the damage of optical module occupies very big ratio.How efficient and cost-effective ground reduces the influence that the damage because of optical module produces transport service, and particularly equipment development personnel and equipment user are paid close attention to.
Summary of the invention
One or more problems in view of the above the invention provides a kind of optical module automatic switching method and system that is used for optical transport network.
According to the optical module automatic switching method that is used for optical transport network of the present invention, may further comprise the steps: S502, the operating state of leading usefulness and/or standby optical module of monitoring optical transport network; S504 takes place when unusual when monitoring main operating state with optical module, close the laser of main usefulness optical module, and the transport service that will lead with optical module switches to standby optical module.
Wherein, main with optical module transmission specific transactions in, standby optical module also is different under the situation of extra traffic of specific transactions in transmission, in step S502, the main operating state of monitoring simultaneously with optical module and standby optical module.
Wherein, step S504 may further comprise the steps: S5042, take place to close the laser of main usefulness optical module, and stop the transport service of standby optical module when unusual when monitoring main operating state with optical module; And S5044, main transport service with optical module is switched to standby optical module.Wherein, main wavelength with optical module and standby optical module is different.
The optical module automatic switchover system that is used for optical transport network according to the present invention comprises: state monitoring apparatus is used to monitor the main usefulness of optical transport network and/or the operating state of standby optical module; And path switching device, be used for monitoring main operating state and take place under the unusual situation with optical module at state monitoring apparatus, close main laser, and the transport service that will lead with optical module switches to standby optical module with optical module.
Wherein, state monitoring apparatus comprises: state reports the unit, and the operating state that is used for leading usefulness and/or standby optical module reports Condition Monitoring Unit; Condition Monitoring Unit is used for the operating state of leading usefulness and/or standby optical module is monitored in real time.
Wherein, path switching device comprises: the module closing unit, being used for monitoring main operating state with optical module at state monitoring apparatus takes place under the unusual situation, transmit control signal with optical module to module switch unit and master, the master is switched with the service path of the transport service of optical module to close main laser and command module switch unit with optical module; The module switch unit is used for the order in response to the module closing unit, and main transport service with optical module is switched to standby optical module, or the transport service that earlier the transport service termination of standby optical module will be led with optical module again switches to standby optical module.
Wherein, state reports the unit to be used and/or standby optical module and service processing circuit realization by main.Condition Monitoring Unit and module closing unit are realized by supervisory circuit.The module switch unit is realized by Service Processing Unit.
By the present invention, realized protection to the high device of probability of damage in using, improved the adaptive capacity of veneer.Compare with existing active-standby single-chip protection technology, do not use complicated algorithm, finish protection in veneer inside automatically and switch, realize that simply the groove position resource and the equipment cost of having saved equipment self have been saved the optical fiber link resource.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the block diagram according to the optical module automatic switchover system that is used for optical transport network of the embodiment of the invention;
Fig. 2 is the structure chart according to the optical module automatic switchover system of the transmission part that is used for optical transport network of the embodiment of the invention;
Fig. 3 is the structure chart according to the optical module automatic switchover system of the receiving unit that is used for optical transport network of the embodiment of the invention;
Fig. 4 is the structure chart based on the optical module automatic switchover system of SDH according to the embodiment of the invention; And
Fig. 5 is the flow chart according to the optical module automatic switching method that is used for optical transport network of the embodiment of the invention.
Embodiment
Below with reference to accompanying drawing, describe the specific embodiment of the present invention in detail.
With reference to figure 1, the optical module automatic switchover system that is used for optical transport network according to the embodiment of the invention is described.As shown in Figure 1, this optical module automatic switchover system comprises: state monitoring apparatus 102 is used to monitor the main usefulness of optical transport network and/or the operating state of standby optical module; And path switching device 104, be used for monitoring main operating state and take place under the unusual situation with optical module at state monitoring apparatus, close main laser, and the transport service that will lead with optical module switches to standby optical module with optical module.
Wherein, state monitoring apparatus 102 comprises: state reports unit 1022, and the operating state that is used for leading usefulness and/or standby optical module reports Condition Monitoring Unit; Condition Monitoring Unit 1024 is used for the operating state of leading usefulness and/or standby optical module is monitored in real time.
Wherein, path switching device 104 comprises: module closing unit 1042, being used for monitoring main operating state with optical module at state monitoring apparatus takes place under the unusual situation, transmit control signal with optical module to module switch unit and master, the master is switched with the service path of the transport service of optical module to close main laser and command module switch unit with optical module; Module switch unit 1044 is used for the order in response to the module closing unit, and main transport service with optical module is switched to standby optical module, or the transport service that earlier the transport service termination of standby optical module will be led with optical module again switches to standby optical module.
Referring to figs. 2 and 3, illustrate according to the transmission part that is used for optical transport network of the embodiment of the invention and the optical module automatic switchover system of receiving unit.As shown in Figures 2 and 3, in the present embodiment, the transmitting terminal of optical transport network and receiving terminal comprise optical module A, optical module B, service processing circuit, supervisory circuit respectively and close ripple/wave-dividing device.Wherein, under the situation of needs transmission extra traffic, optical module A and optical module B wavelength are different; Do not needing to transmit under the situation of extra traffic, the wavelength of optical module A and optical module B is not being required.
Be that example describes the specific embodiment of the present invention with the main usefulness in A road below.
As shown in Figure 2,, after service signal waiting for transmission is handled through service processing circuit, become the signal of telecommunication with optical module A rate-matched, send into optical module A at sending direction.Signal is finished the conversion of electricity/light by optical module A, behind ECDC ripple/wave-dividing device, by Optical Fiber Transmission to receiver equipment.At this moment, the B road is standby, can be idle, also can transmit extra business, to improve the utilance of fiber resource.
Service processing circuit (that is, state reports the part of unit) reports supervisory circuit (that is Condition Monitoring Unit) with the operating state on A road and B road.Optical module A (that is, state reports another part of unit) delivers to supervisory circuit with data message and warning information, and supervisory circuit is monitored its operating state in real time, and makes judgement.If B road transmission extra traffic, then supervisory circuit is with the operating state of while monitor optical module B.
When the operating state of the optical module A that detects the A road takes place when unusual, supervisory circuit (that is, the module closing unit) will be sent control signal and give service processing circuit and optical module A, the transmission laser of shutoff optical module A.If the B road is at the transmission extra traffic, then service processing circuit (promptly, the module switch unit) will stop the transmission of its extra traffic, transmission path with the transport service on former A road switches simultaneously, the B road becomes main using, carry out electric light conversion by optical module B, behind ECDC ripple/wave-dividing device, by Optical Fiber Transmission to the recipient.
As shown in Figure 3, on receive direction, the physical connection method and the sending direction of device are identical.Service processing circuit is handled the A road through the service signal after the opto-electronic conversion.Simultaneously, the operating state of the real-time monitor optical modules A of supervisory circuit.When the operating state of optical module A takes place when unusual, supervisory circuit is sent control signal to service processing circuit and optical module A, carries out the switching of transmission path.If extra traffic is transmitted on the B road simultaneously, the service processing circuit extra traffic on treatments B road simultaneously then, supervisory circuit is monitored the optical module B on B road simultaneously.
With reference to figure 4, the optical module automatic switchover system based on SDH according to the embodiment of the invention is described.In the optical module automatic switchover system based on SDH shown in Figure 4, service processing circuit is realized by field programmable gate array (FPGA), is cooperated corresponding filter circuit and power circuit.Supervisory circuit adopts the higher logic element (CPLD) of conformability to realize, cooperates corresponding filter circuit and power circuit.The speed of optical module A and optical module B is 622M, and wavelength is respectively 1550nm and 1310nm, is encapsulated as SFP.Close ripple/wave-dividing device and adopt 1310/1550 channel join-splitting device.In addition, the Mpc860 chip of employing Freescale company is finished the function of alarming processing, alarm report and manual switching.Wherein, the course of work based on the optical module automatic switchover system of SDH according to the embodiment of the invention is as follows:
The first step connects.Sending direction selects the A road to use as main by Mpc860.Professional handle through FPGA after, carry out opto-electronic conversion by optical module A after, enter Optical Fiber Transmission through channel join-splitting device.At this moment, the B road free time.CPLD and optical module A real time communication, the operating state of monitor optical modules A.Simultaneously, CPLD reports Mpc860 with the operating state of optical module A, finishes human-computer dialogue by Mpc860.Receive direction selects the A road to use as main by Mpc860.A road business is handled by FPGA.Supervisory circuit is monitored the working condition of respective devices in real time, and Mpc860 finishes human-computer dialogue synchronously.Note, the coupling of sending direction and receive direction optical module wavelength, promptly all with 1550nm as the main usefulness in A road.
Second step switched.Receive direction, CPLD detect the received signal alarm.CPLD sends control signal to FPGA, will lead with path and be converted to the B road by the A road; CPLD sends control signal to optical module A, turn-offs the transmission laser of optical module A; Simultaneously, CPLD reports Mpc860 with warning information and handover information, finishes human-computer dialogue.Sending direction, because of the transmission laser of receive direction optical module A is closed, CPLD will detect warning information, simultaneously, finish main with the switching of path and reporting of warning information and handover information.
The 3rd step location.The detected alarm of receive direction CPLD comprises following two kinds of situations: first kind of situation, and sending direction optical module A damages, and does not promptly have signal to send; Second kind of situation, receive direction optical module A damages, and promptly have signal to send, but the recipient can't receive.At first kind of situation, sending direction optical module sendaisle damages, and then sending direction CPLD will detect this information, and report Mpc860, and the user judges that in view of the above the sending direction optical module damages; At second kind of situation, the optical module sendaisle of sending direction and receive direction is all normal.At this moment, receive direction optical module receive path damages, and the CPLD of receive direction at first detects unusually, and sends switching signal and give FPGA, sends control signal simultaneously and gives optical module, turn-offs its sendaisle.In view of the above, the user can be judged as the damage of receive direction optical module.
The 4th step recovered.The optical module A of sending direction and receive direction, optical module B all adopt the SFP encapsulation, can realize damaging the recovery of link directly by changing optical module.
From above description as can be seen, the present invention when optical module breaks down, automatically switches to standby light path by the operating state of the real-time monitor optical module of supervisory circuit, has no progeny and can recover automatically during business is instantaneous.
That is to say, may further comprise the steps: S502, the operating state of leading usefulness and/or standby optical module of monitoring optical transport network according to embodiment of the invention optical module automatic switching method; S504 takes place when unusual when monitoring main operating state with optical module, close the laser of main usefulness optical module, and the transport service that will lead with optical module switches to standby optical module.
Wherein, main with optical module transmission specific transactions in, standby optical module also is different under the situation of extra traffic of specific transactions in transmission, in step S502, the main operating state of monitoring simultaneously with optical module and standby optical module.
Wherein, step S504 may further comprise the steps: S5042, take place to close the laser of main usefulness optical module, and stop the transport service of standby optical module when unusual when monitoring main operating state with optical module; And S5044, main transport service with optical module is switched to standby optical module.Wherein, main wavelength with optical module and standby optical module is different.
The above is embodiments of the invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.
Claims (11)
1. an optical module automatic switching method that is used for optical transport network is characterized in that, may further comprise the steps:
S502, the operating state of leading usefulness and/or standby optical module of monitoring optical transport network; And
S504 takes place when unusual when monitoring described main operating state with optical module,
Close described main laser, and described main transport service with optical module is switched to described standby optical module with optical module.
2. optical module automatic switching method according to claim 1, it is characterized in that, when described master is with optical module transmission specific transactions, described standby optical module also is different under the situation of extra traffic of described specific transactions in transmission, in described step S502, monitor described main operating state simultaneously with optical module and described standby optical module.
3. optical module automatic switching method according to claim 2 is characterized in that, described step S504 may further comprise the steps:
S5042 takes place to close the laser of described main usefulness optical module, and stop the transport service of described standby optical module when unusual when monitoring described main operating state with optical module; And
S5044 switches to described standby optical module with described main transport service with optical module.
4. optical module automatic switching method according to claim 3 is characterized in that, described main wavelength with optical module and described standby optical module is different.
5. an optical module automatic switchover system that is used for optical transport network is characterized in that, comprising:
State monitoring apparatus is used to monitor the main usefulness of optical transport network and/or the operating state of standby optical module; And
Path switching device is used for monitoring described main operating state with optical module at described state monitoring apparatus and takes place under the unusual situation, closes described main laser with optical module, and described main transport service with optical module is switched to described standby optical module.
6. optical module automatic switchover system according to claim 5 is characterized in that, described state monitoring apparatus comprises:
State reports the unit, is used for the described operating state of leading usefulness and/or standby optical module is reported Condition Monitoring Unit;
Described Condition Monitoring Unit is used for the described operating state of leading usefulness and/or standby optical module is monitored in real time.
7. optical module automatic switchover system according to claim 6 is characterized in that, described path switching device comprises:
The module closing unit, being used for monitoring described main operating state with optical module at described state monitoring apparatus takes place under the unusual situation, transmit control signal with optical module to module switch unit and described master, with close described main with optical module laser and order described module switch unit that the described service path of leading with the transport service of optical module is switched;
Described module switch unit, be used for order in response to described module closing unit, described main transport service with optical module is switched to described standby optical module, or transport service termination that earlier will described standby optical module switches to described standby optical module with described main transport service with optical module again.
8. optical module automatic switchover system according to claim 7 is characterized in that, described state reports the unit by described main using and/or standby optical module and service processing circuit realization.
9. optical module automatic switchover system according to claim 8 is characterized in that described Condition Monitoring Unit is realized by supervisory circuit.
10. optical module automatic switchover system according to claim 9 is characterized in that, described module closing unit is realized by described supervisory circuit.
11. optical module automatic switchover system according to claim 10 is characterized in that, described module switch unit is realized by described Service Processing Unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007101470790A CN101166069A (en) | 2007-09-05 | 2007-09-05 | Method and system for automatic switching of optical module in optical transmission network |
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| CNA2007101470790A CN101166069A (en) | 2007-09-05 | 2007-09-05 | Method and system for automatic switching of optical module in optical transmission network |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102088366A (en) * | 2010-11-30 | 2011-06-08 | 中兴通讯股份有限公司 | Single board information monitoring device and distributed single board information monitoring system |
| WO2011143876A1 (en) * | 2010-05-21 | 2011-11-24 | 中兴通讯股份有限公司 | Master/backup switching method and device for service nodes |
| CN102263587A (en) * | 2011-07-26 | 2011-11-30 | 中兴通讯股份有限公司 | Optical interface switching method of ONU and system thereof |
| WO2011120460A3 (en) * | 2011-05-05 | 2012-04-19 | 华为技术有限公司 | Single fiber bi-directional optical module, transport system and method based on single fiber bi-directional optical modules |
| CN102480368A (en) * | 2010-11-22 | 2012-05-30 | 中兴通讯股份有限公司 | Protecting method and system of aggregation link |
| CN106612564A (en) * | 2015-10-21 | 2017-05-03 | 普天信息技术有限公司 | Method and device for replacement of user physical interface in base station |
| CN112019262A (en) * | 2020-08-13 | 2020-12-01 | 武汉光迅科技股份有限公司 | Communication station, optical communication system, data transmission method, and storage medium |
| CN115065858A (en) * | 2022-08-18 | 2022-09-16 | 广州市保伦电子有限公司 | Audio and video transmission method and system based on double optical fibers |
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- 2007-09-05 CN CNA2007101470790A patent/CN101166069A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011143876A1 (en) * | 2010-05-21 | 2011-11-24 | 中兴通讯股份有限公司 | Master/backup switching method and device for service nodes |
| CN102480368B (en) * | 2010-11-22 | 2015-07-22 | 中兴通讯股份有限公司 | Protecting method and system of aggregation link |
| CN102480368A (en) * | 2010-11-22 | 2012-05-30 | 中兴通讯股份有限公司 | Protecting method and system of aggregation link |
| CN102088366A (en) * | 2010-11-30 | 2011-06-08 | 中兴通讯股份有限公司 | Single board information monitoring device and distributed single board information monitoring system |
| CN102088366B (en) * | 2010-11-30 | 2015-06-03 | 中兴通讯股份有限公司 | Single board information monitoring device and distributed single board information monitoring system |
| CN102870331B (en) * | 2011-05-05 | 2015-04-15 | 华为技术有限公司 | Single fiber bi-directional optical module, transport system and method based on single fiber bi-directional optical module |
| CN102870331A (en) * | 2011-05-05 | 2013-01-09 | 华为技术有限公司 | Single fiber bi-directional optical module, transport system and method based on single fiber bi-directional optical module |
| WO2011120460A3 (en) * | 2011-05-05 | 2012-04-19 | 华为技术有限公司 | Single fiber bi-directional optical module, transport system and method based on single fiber bi-directional optical modules |
| US9419706B2 (en) | 2011-05-05 | 2016-08-16 | Huawei Technologies Co., Ltd. | Single fiber bi-directional optical module, and transport system and method based thereon |
| CN102263587A (en) * | 2011-07-26 | 2011-11-30 | 中兴通讯股份有限公司 | Optical interface switching method of ONU and system thereof |
| CN106612564A (en) * | 2015-10-21 | 2017-05-03 | 普天信息技术有限公司 | Method and device for replacement of user physical interface in base station |
| CN106612564B (en) * | 2015-10-21 | 2020-05-08 | 普天信息技术有限公司 | Method and device for replacing user physical interface in base station |
| CN112019262A (en) * | 2020-08-13 | 2020-12-01 | 武汉光迅科技股份有限公司 | Communication station, optical communication system, data transmission method, and storage medium |
| CN115065858A (en) * | 2022-08-18 | 2022-09-16 | 广州市保伦电子有限公司 | Audio and video transmission method and system based on double optical fibers |
| CN115065858B (en) * | 2022-08-18 | 2022-11-15 | 广州市保伦电子有限公司 | Audio and video transmission method and system based on double optical fibers |
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