CN101984566A - Method and network management system for complex optical network protection switching - Google Patents
Method and network management system for complex optical network protection switching Download PDFInfo
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Abstract
The invention relates to a method and a network management system for complex optical network protection switching. The network management system is employed to get advantages of the whole network. When a business path is in failure, a best path is provided to a user according to pre-set load occupancy rate of each line of the whole network, line aging degree, alarm frequency, signal-to-noise ratio and the like to perform protection switching, which is beneficial to network optimization, and reduces the pressure of a hardware system and an APS bus.
Description
Technical field
The present invention relates to communication technical field, specifically is the method and the network management system of complicated optical network protection turning.
Background technology
Fast development along with the optical-fiber network technology; provide powerful support for optical transport network and can carry more polymorphic type and the more ability of multicapacity business; sharp increase along with the business datum amount; the survivability ability that network possesses is network still can be kept service continuity in the situation lower network of fault generation a ability; be directly connected to the safety of Network data; this is APS (Automatic Protection Switching) function with regard to needing system that powerful APS is provided, and more typically comprises protected modes such as 1+1 protection, 1:N protection, ring share protect at present.
A protection group typically refers to the one group of set of hardware that is provided with in order to protect certain resource (wavelength channel or a multiplex section etc.), generally includes APS detector, APS controller, APS actuator etc.It mainly is to be cooperated mutually by the controller veneer of each network element in the protection group with finishing that the protection of protection group generation is at present switched.
Along with the complexity increase of system configuration, in system configuration a large number of services veneer, because line fault causes the corresponding business veneer all to report the APS alarm simultaneously, efficient and the reliability to the APS of system bus will cause unnecessary pressure greatly like this.
In addition; for the network that has a large amount of protection nodes (the protection node is meant and can protects the veneer of switching); simple example as shown in Figure 1; non-protection node in the path omits and shows; if comprise N protection node in the network; each protection node all is a 1:1 protection type, and all paths through the overprotection port all are the protection paths, then protect the path just to have 2
N-a kind may, and optimal path is comprehensively alarmed the factors such as signal to noise ratio of occurrence frequency, optical channel on each line load occupancy, circuit optical fiber degree of aging, the circuit and is selected, and the APS controller that present technology relies on is only known the warning information of this network element, can't obtain above-mentioned whole network data, the result who finally switches may not be best.
Summary of the invention
Main purpose of the present invention provides a kind of method and network management system of complicated optical network protection turning; when service path breaks down, under the prerequisite that does not influence protection switch time, select the best protection path; offer the user and carry out reference, switch to protect.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of method of complicated optical network protection turning, it comprises:
All paths of network management system search the whole network, the port and the frequency of relevant alarm generation switched in degree of aging, each Optical Signal To Noise Ratio and the protection of obtaining road under the load occupancy, each optical transport layer of each multiplex section optical fiber link in path;
Judge the service path that breaks down according to the port that described alarm takes place, concern all optional protection paths that obtain this service path that breaks down according to protection;
Carry out the ordering in optional protection path according to the degree of aging on road under the load occupancy of each the multiplex section optical fiber link that sets in advance, each optical transport layer, each Optical Signal To Noise Ratio or/and the frequency that relevant alarm takes place is switched in protection, it is for reference to select optimal path;
According to the user selection protection of described optimal path is switched.
Preferably, describedly the selection protection of described optimal path is switched, specifically comprises according to the user:
Switch if set in advance to protect automatically for network management system, then network management system is judged the described service path that breaks down and the starting point of the non-coincidence part in described best protection path and the configuration order that terminal point need issue, and described configuration order is sent to the veneer execute protection switch; Do not switch if set in advance to protect automatically, then receive that in described network management system protection switching relevant alarm back and being switched by hardware protection for network management system.
Preferably, the degree of aging on road, each Optical Signal To Noise Ratio and/or protection are switched the frequency that relevant alarm takes place and are carried out the ordering in optional protection path under the load occupancy of each multiplex section optical fiber link that described basis sets in advance, each optical transport layer, and it is for reference to select optimal path; Specifically comprise:
Calculate the maximum of maximum, each transport layer aging circuit degree of each multiplex section load occupancy in each optional protection path, respectively alarm the i.e. signal to noise ratio in path for this reason of signal to noise ratio of maximum, the respective channel of occurrence frequency;
According to the factor that sets in advance, with the maximum of the maximum of the maximum of described each multiplex section load occupancy, aging circuit degree, alarm occurrence frequency all according to descending sort, signal to noise ratio is according to ascending sort, and be weighted, calculate described each optional protection path weighted sum under various sortords;
Determine described and the protection path of maximum be optimal path.
Preferably, described network management system is judged the described service path that breaks down and the starting point of described all non-coincidence parts in optional protection path and the configuration order that terminal point need issue, and specifically comprises:
The best protection path of finding out the current service path that breaks down and choosing is superposed part not;
If the veneer of making a start of intersection is not the ROADM veneer, then need to be handed down to wavelength Assignment Command of described ROADM veneer: the current service path wavelength that breaks down is assigned to protection corresponding port, path again from the operating path corresponding port; Perhaps
If the veneer of making a start of intersection is not the TMUX veneer, then need to be handed down to cross-over configuration order of described TMUX veneer: present cross bar switch is switched on the intersection in the best protection path of choosing; Perhaps
If the veneer of making a start of intersection is not an OP class veneer, then needs to be handed down to relevant mandatory protection of APS actuator and switch order: protection switch is switched on the port in the best protection path of choosing.
The present invention also provides a kind of network management system, and it comprises:
Parameter acquiring unit is used to search for all paths of the whole network, obtains degree of aging, each Optical Signal To Noise Ratio and the protection on road under the load occupancy, each optical transport layer of each multiplex section optical fiber link in path and switches port and the frequency that relevant alarm takes place;
Protection path acquiring unit, the port that is used for taking place according to described alarm is judged the service path that breaks down, and concerns all optional protection paths that obtain this service path that breaks down according to protection;
The optimal path selection unit, degree of aging, each Optical Signal To Noise Ratio and/or the protection that is used for road under the load occupancy, each optical transport layer according to each multiplex section optical fiber link of setting in advance switched the frequency that relevant alarm takes place and carried out the ordering in optional protection path, and it is for reference to select optimal path;
The protection switch unit is used for according to the user selection protection of described optimal path being switched.
Preferably, described protection switch unit, also be used for: switch if set in advance to protect automatically for network management system, then network management system is judged the described service path that breaks down and the starting point of the non-coincidence part in described best protection path and the configuration order that terminal point need issue, and described configuration order is sent to the veneer execute protection switch; Do not switch if set in advance to protect automatically, then receive that in described network management system protection switching relevant alarm back and being switched by hardware protection for network management system.
Preferably, described optimal path selection unit also comprises:
The calculation of parameter subelement is used to calculate the maximum of maximum, each transport layer aging circuit degree of each multiplex section load occupancy in each optional protection path, respectively alarms the i.e. signal to noise ratio in path for this reason of signal to noise ratio of maximum, the respective channel of occurrence frequency;
Ordering weighting subelement, be used for according to the factor that sets in advance, with the maximum of the maximum of the maximum of described each multiplex section load occupancy, aging circuit degree, alarm occurrence frequency all according to descending sort, signal to noise ratio is according to ascending sort, and be weighted, calculate described each optional protection path weighted sum under various sortords;
Optimal path is determined subelement, be used for determining described and the protection path of maximum be optimal path.
Preferably, described protection switch unit also is used to find out not superposed part of the current service path that breaks down and the best protection path of choosing; If the veneer of making a start in the best protection path of superposed part is not the ROADM veneer, then need to be handed down to wavelength Assignment Command of described ROADM veneer: the current service path wavelength that breaks down is assigned to protection corresponding port, path again from the operating path corresponding port; If perhaps the veneer of making a start of superposed part is not the TMUX veneer, then need to be handed down to cross-over configuration order of described TMUX veneer: present cross bar switch is switched on the intersection in the best protection path of choosing; If perhaps the veneer of making a start of superposed part is not an OP class veneer, then needs to be handed down to relevant mandatory protection of APS actuator and switch order: protection switch is switched on the port in the best protection path of choosing.
Implement technical scheme of the present invention; has following beneficial effect: the method for complicated optical network protection turning provided by the invention and network management system; utilize network management system can obtain the advantage of whole network data; when service path breaks down; factors such as each line load occupancy of the whole network of being concerned about according to the user, aging circuit degree, alarm occurrence frequency, signal to noise ratio; offer protection path best concerning him of user; switch to protect; help the network optimization, alleviated the pressure of hardware system and APS bus.
Description of drawings
The method flow diagram that Fig. 1 provides for the embodiment of the invention;
Fig. 2 is the flow chart of the step S130 of Fig. 1;
The schematic diagram of the network system that Fig. 3 provides for the embodiment of the invention;
The current service path that breaks down of the network management system that Fig. 4 provides for the embodiment of the invention and the best protection path schematic diagram of choosing;
The structural representation of the network management system that Fig. 5 provides for the embodiment of the invention;
The structural representation of the optimal path selection unit that Fig. 6 provides for the embodiment of the invention.
The realization of the object of the invention, functional characteristics and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The embodiment of the invention provides a kind of method of complicated optical network protection turning, and as shown in Figure 1, the method comprising the steps of:
All paths of S110, network management system search the whole network, the port and the frequency of relevant alarm generation switched in degree of aging, each Optical Signal To Noise Ratio and the protection of obtaining road under the load occupancy, each optical transport layer of each multiplex section optical fiber link in path; In the present embodiment, relation is protected in the path of homology chummage each other; The bar number that the load occupancy of each multiplex section optical fiber link in described path is generally two link bearer practical businesses between the light amplification veneer is the ratio of multiplex section bandwidth therewith; The degree of aging on road is under described each optical transport layer: network management system is collected the input optical power and the Output optical power data of each optical transport layer circuit, compares the computational scheme degree of aging with the circuit attenuation of dispatching from the factory;
S120, the port that takes place according to described alarm are judged the service path that breaks down, all optional protection paths that obtain this service path that breaks down according to the protection relation; In the present embodiment, receive protection when switching relevant alarm in network management system, network element, veneer, port, temporal information that the record alarm takes place are calculated the frequency that this alarm takes place; It is the relation of protection path and service path that described protection is closed, promptly with the related protection of service path path.
S130, switch the frequency that relevant alarm takes place according to degree of aging, each Optical Signal To Noise Ratio and/or the protection on road under the load occupancy of each multiplex section optical fiber link of setting in advance, each optical transport layer and carry out the ordering in optional protection path, it is for reference to select optimal path; This sets in advance is to set in advance according to the degree of attentiveness that is used for above-mentioned factors such as load occupancy, degree of aging, signal to noise ratio and occurrence frequency, the factor of this care can be any one, also can be several combination arbitrarily, in the present embodiment, more specifically, as shown in Figure 2, this step S130 comprises:
The maximum of S131, the maximum of calculating each multiplex section load occupancy in each optional protection path, each transport layer aging circuit degree, respectively alarm the i.e. signal to noise ratio in path for this reason of signal to noise ratio of maximum, the respective channel of occurrence frequency;
The factor that S132, basis set in advance (as: can be according to the factor of customer relationship, also can be provided with) for system is automatic, with the maximum of the maximum of the maximum of described each multiplex section load occupancy, aging circuit degree, alarm occurrence frequency all according to descending sort, signal to noise ratio is according to ascending sort, and be weighted, calculate described each optional protection path weighted sum under various sortords;
S133, determine described and the protection path of maximum be optimal path.
S140, the selection protection of described optimal path is switched according to the user.In the present embodiment, more specifically, this step S140 comprises: (this sets in advance and can be customization if set in advance, also can be provided with automatically for system) protect automatically for network management system and switch, then network management system is judged the described service path that breaks down and the starting point of the non-coincidence part in described best protection path and the configuration order that terminal point need issue, as the wavelength assignment, cross-over configuration, mandatory protection is switched configuration order etc., described configuration order is sent to the veneer execute protection switches, in the present embodiment, this configuration order adopts the multicast signaling to send veneer to and carries out, and has guaranteed the 50ms that protection switch time requires less than operation; Do not switch if set in advance to protect automatically for network management system, then receive that in described network management system (by the APS bus) protection switching relevant alarm, the back is switched by hardware protection.The method that present embodiment provides is analyzed whole network data by network management system, unified issue protection and switches order, does not need veneer to judge and transmits signaling, not only helps the network optimization, and has alleviated the pressure of hardware system and APS bus.
In the present embodiment, more specifically, be example with business shown in Figure 3, wherein, among this Fig. 3, remove between protection node 1 and the protection node 2 as shown in Figure 4 in the current service path that breaks down and the best protection path chosen, service path with protect paths merge.In described step S140, described network management system is judged the described service path that breaks down and the starting point of the non-coincidence part in described best protection path and the configuration order that terminal point need issue, and specifically comprises:
The best protection path of finding out current path of breaking down and choosing is superposed part not, promptly protects AB highway section (service path) and CD highway section (protection path) between node 1 and the protection node 2;
If the veneer of making a start of intersection is not ROADM (Reconfigurable Optical Add-Drop Multiplexer, reconfigurable optical add/drop multiplexer) veneer then needs to be handed down to wavelength Assignment Command of this veneer: the current service path wavelength that breaks down is assigned to the protection path port again from the operating path corresponding ports; Perhaps
If the veneer of making a start of intersection is not TMUX (Trans-Multiplexer, sub-rate multiplexer) veneer then needs to be handed down to relevant cross-over configuration order of CSU (Cross-connect and Synchronous Timing Board) veneer: present cross bar switch is switched on the intersection in protection highway section; Perhaps
If the veneer of making a start of intersection is not OP (light protection) class veneer, then needs to be handed down to relevant mandatory protection of APS actuator and switch order: protection switch is switched on the port in protection highway section;
In addition, also identical at above-mentioned three kinds of situations in the process of the processing of receiving terminal.
The embodiment of the invention also provides a kind of network management system, is used to the method that realizes that the foregoing description provides, and as shown in Figure 5, this network management system comprises:
Parameter acquiring unit 510 is used to search for all paths of the whole network, obtains degree of aging, each Optical Signal To Noise Ratio and the protection on road under the load occupancy, each optical transport layer of each multiplex section optical fiber link in path and switches port and the frequency that relevant alarm takes place;
Protection path acquiring unit 520, the port that is used for taking place according to described alarm is judged the service path that breaks down, and concerns all optional protection paths that obtain this service path that breaks down according to protection;
Optimal path selection unit 530, degree of aging, each Optical Signal To Noise Ratio and/or the protection that is used for road under the load occupancy, each optical transport layer according to each multiplex section optical fiber link of setting in advance switched the frequency that relevant alarm takes place and carried out the ordering in optional protection path, and it is for reference to select optimal path;
Protection switch unit 540 is used for according to the user selection protection of described optimal path being switched.In the present embodiment, more specifically, described protection switch unit 540, also be used for: switch if set in advance to protect automatically for network management system, then network management system is judged the described service path that breaks down and the starting point of the non-coincidence part in described best protection path and the configuration order that terminal point need issue, and described configuration order is sent to the veneer execute protection switch; Do not switch if set in advance to protect automatically, then receive that in described network management system protection switching relevant alarm back and being switched by hardware protection for network management system.
In addition, in embodiment more specifically, described protection switch unit 540 also is used to find out not superposed part of the current service path that breaks down and the best protection path of choosing; If the veneer of making a start in the best protection path of superposed part is not the ROADM veneer, then need to be handed down to wavelength Assignment Command of described ROADM veneer: the current service path wavelength that breaks down is assigned to protection corresponding port, path again from the operating path corresponding port; If perhaps the veneer of making a start of superposed part is not the TMUX veneer, then need to be handed down to cross-over configuration order of described TMUX veneer: present cross bar switch is switched on the intersection in the best protection path of choosing; If perhaps the veneer of making a start of superposed part is not an OP class veneer, then needs to be handed down to relevant mandatory protection of APS actuator and switch order: protection switch is switched on the port in the best protection path of choosing.
In the present embodiment, more specifically, described optimal path selection unit 530 as shown in Figure 6, also comprises:
Calculation of parameter subelement 531 is used to calculate the maximum of maximum, each transport layer aging circuit degree of each multiplex section load occupancy in each optional protection path, respectively alarms the i.e. signal to noise ratio in path for this reason of signal to noise ratio of maximum, the respective channel of occurrence frequency;
Ordering weighting subelement 532, be used for according to the factor that sets in advance, with the maximum of the maximum of the maximum of described each multiplex section load occupancy, aging circuit degree, alarm occurrence frequency all according to descending sort, signal to noise ratio is according to ascending sort, and be weighted, calculate described each optional protection path weighted sum under various sortords;
Optimal path is determined subelement 533, be used for determining described and the protection path of maximum be optimal path.
Below only be preferred embodiment of the present invention,, all any modifications of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within protection scope of the present invention not in order to restriction the present invention.
Claims (8)
1. the method for a complicated optical network protection turning is characterized in that, comprising:
All paths of network management system search the whole network, the port and the frequency of relevant alarm generation switched in degree of aging, each Optical Signal To Noise Ratio and the protection of obtaining road under the load occupancy, each optical transport layer of each multiplex section optical fiber link in path;
Judge the service path that breaks down according to the port that described alarm takes place, concern all optional protection paths that obtain this service path that breaks down according to protection;
Switch the frequency that relevant alarm takes place according to degree of aging, each Optical Signal To Noise Ratio and/or the protection on road under the load occupancy of each the multiplex section optical fiber link that sets in advance, each optical transport layer and carry out the ordering in optional protection path, it is for reference to select optimal path;
According to the user selection protection of described optimal path is switched.
2. method according to claim 1 is characterized in that, describedly according to the user selection protection of described optimal path is switched, and specifically comprises:
Switch if set in advance to protect automatically for network management system, then network management system is judged the described service path that breaks down and the starting point of the non-coincidence part in described best protection path and the configuration order that terminal point need issue, and described configuration order is sent to the veneer execute protection switch; Do not switch if set in advance to protect automatically, then receive that in described network management system protection switching relevant alarm back and being switched by hardware protection for network management system.
3. as method as described in the claim 2, it is characterized in that, the degree of aging on road, each Optical Signal To Noise Ratio and/or protection are switched the frequency that relevant alarm takes place and are carried out the ordering in optional protection path under the load occupancy of each multiplex section optical fiber link that described basis sets in advance, each optical transport layer, and it is for reference to select optimal path; Specifically comprise:
Calculate the maximum of maximum, each transport layer aging circuit degree of each multiplex section load occupancy in each optional protection path, respectively alarm the i.e. signal to noise ratio in path for this reason of signal to noise ratio of maximum, the respective channel of occurrence frequency;
According to the factor that sets in advance, with the maximum of the maximum of the maximum of described each multiplex section load occupancy, aging circuit degree, alarm occurrence frequency all according to descending sort, signal to noise ratio is according to ascending sort, and be weighted, calculate described each optional protection path weighted sum under various sortords;
Determine described and the protection path of maximum be optimal path.
4. as method as described in the claim 2, it is characterized in that described network management system is judged the described service path that breaks down and the starting point of described all non-coincidence parts in optional protection path and the configuration order that terminal point need issue, and specifically comprises:
The best protection path of finding out the current service path that breaks down and choosing is superposed part not;
If the veneer of making a start of intersection is not the ROADM veneer, then need to be handed down to wavelength Assignment Command of described ROADM veneer: the current service path wavelength that breaks down is assigned to protection corresponding port, path again from the operating path corresponding port; Perhaps
If the veneer of making a start of intersection is not the TMUX veneer, then need to be handed down to cross-over configuration order of described TMUX veneer: present cross bar switch is switched on the intersection in the best protection path of choosing; Perhaps
If the veneer of making a start of intersection is not an OP class veneer, then needs to be handed down to relevant mandatory protection of APS actuator and switch order: protection switch is switched on the port in the best protection path of choosing.
5. a network management system is characterized in that, comprising:
Parameter acquiring unit is used to search for all paths of the whole network, obtains degree of aging, each Optical Signal To Noise Ratio and the protection on road under the load occupancy, each optical transport layer of each multiplex section optical fiber link in path and switches port and the frequency that relevant alarm takes place;
Protection path acquiring unit, the port that is used for taking place according to described alarm is judged the service path that breaks down, and concerns all optional protection paths that obtain this service path that breaks down according to protection;
The optimal path selection unit, degree of aging, each Optical Signal To Noise Ratio and/or the protection that is used for road under the load occupancy, each optical transport layer according to each multiplex section optical fiber link of setting in advance switched the frequency that relevant alarm takes place and carried out the ordering in optional protection path, and it is for reference to select optimal path;
The protection switch unit is used for according to the user selection protection of described optimal path being switched.
6. as network management system as described in the claim 5, it is characterized in that, described protection switch unit, also be used for: switch if set in advance to protect automatically for network management system, then network management system is judged the described service path that breaks down and the starting point of the non-coincidence part in described best protection path and the configuration order that terminal point need issue, and described configuration order is sent to the veneer execute protection switch; Do not switch if set in advance to protect automatically, then receive that in described network management system protection switching relevant alarm back and being switched by hardware protection for network management system.
7. as network management system as described in the claim 6, it is characterized in that described optimal path selection unit also comprises:
The calculation of parameter subelement is used to calculate the maximum of maximum, each transport layer aging circuit degree of each multiplex section load occupancy in each optional protection path, respectively alarms the i.e. signal to noise ratio in path for this reason of signal to noise ratio of maximum, the respective channel of occurrence frequency;
Ordering weighting subelement, be used for according to the factor that sets in advance, with the maximum of the maximum of the maximum of described each multiplex section load occupancy, aging circuit degree, alarm occurrence frequency all according to descending sort, signal to noise ratio is according to ascending sort, and be weighted, calculate described each optional protection path weighted sum under various sortords;
Optimal path is determined subelement, be used for determining described and the protection path of maximum be optimal path.
8. as network management system as described in the claim 6, it is characterized in that described protection switch unit also is used to find out not superposed part of the current service path that breaks down and the best protection path of choosing; If the veneer of making a start in the best protection path of superposed part is not the ROADM veneer, then need to be handed down to wavelength Assignment Command of described ROADM veneer: the current service path wavelength that breaks down is assigned to protection corresponding port, path again from the operating path corresponding port; If perhaps the veneer of making a start of superposed part is not the TMUX veneer, then need to be handed down to cross-over configuration order of described TMUX veneer: present cross bar switch is switched on the intersection in the best protection path of choosing; If perhaps the veneer of making a start of superposed part is not an OP class veneer, then needs to be handed down to relevant mandatory protection of APS actuator and switch order: protection switch is switched on the port in the best protection path of choosing.
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| CN2010105461824A CN101984566A (en) | 2010-11-16 | 2010-11-16 | Method and network management system for complex optical network protection switching |
| PCT/CN2011/081053 WO2012065491A1 (en) | 2010-11-16 | 2011-10-20 | Method for protection switching in complicated optical network and network management system |
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| CN2010105461824A CN101984566A (en) | 2010-11-16 | 2010-11-16 | Method and network management system for complex optical network protection switching |
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| CN107204935A (en) * | 2017-07-12 | 2017-09-26 | 苏州大学 | The probability of malfunction and load balancing mean method and system of the flexible optical-fiber network of frequency spectrum |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2012065491A1 (en) * | 2010-11-16 | 2012-05-24 | 中兴通讯股份有限公司 | Method for protection switching in complicated optical network and network management system |
| WO2012106904A1 (en) * | 2011-07-20 | 2012-08-16 | 华为技术有限公司 | Wavelength access method and device |
| CN102694683A (en) * | 2012-05-22 | 2012-09-26 | 华为技术有限公司 | Service switching method, network management server and communication system |
| CN103825751A (en) * | 2012-11-16 | 2014-05-28 | 华为技术有限公司 | Service opening method, veneer, network management equipment and service opening system |
| CN103825751B (en) * | 2012-11-16 | 2017-11-24 | 华为技术有限公司 | Method, veneer, Network Management Equipment and the system to activate the service |
| US10536236B2 (en) | 2013-08-26 | 2020-01-14 | Coriant Operations, Inc. | Intranodal ROADM fiber management apparatuses, systems, and methods |
| CN108234016A (en) * | 2016-12-09 | 2018-06-29 | 中兴通讯股份有限公司 | Optical network protection control method, device and NM server |
| CN107204935A (en) * | 2017-07-12 | 2017-09-26 | 苏州大学 | The probability of malfunction and load balancing mean method and system of the flexible optical-fiber network of frequency spectrum |
| CN107204935B (en) * | 2017-07-12 | 2020-11-17 | 苏州大学 | Fault probability and load balancing compromise method and system for spectrum flexible optical network |
| CN109962735A (en) * | 2019-03-11 | 2019-07-02 | 烽火通信科技股份有限公司 | The adaptation method and system of optical power parameter |
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