CN105141354A - Business level classification based frequency spectrum sharing degree protecting method and device - Google Patents
Business level classification based frequency spectrum sharing degree protecting method and device Download PDFInfo
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Abstract
The invention discloses a business level classification based frequency spectrum sharing degree protecting method and device. The business level classification based frequency spectrum sharing degree protecting device mainly comprises a path business request level classification module (2), an establishment module (4), a frequency spectrum sharing degree setting module (6), a first frequency spectrum resource distribution module (8), a second frequency spectrum resource distribution module (10) and a sequence classification module. The general conception of the business level classification based frequency spectrum sharing degree protecting method and device aims at the survivability problem of an optical network with flexible frequency spectrums and the problem of how to carry out effective protection and rapid recovery when a business is in failure. Different business service levels are classified and protected by introducing the basic idea of the frequency spectrum sharing degree, and distribution and optimization of the frequency spectrum resource for the businesses are carried out through self-adaptively adjusting the threshold of the frequency spectrum sharing degree, so that vicious competition in a malfunctioned business recovery process caused by frequency spectrum resource sharing is removed, a restrictive relation between the business failure recovery and the frequency spectrum efficiency is removed, and the network survivability of the businesses is ensured.
Description
Technical field
The present invention is applied in flexible spectrum optical-fiber network, is mainly used in the harmful competition of the recovery process solving traffic failure.
Background technology
Along with the fast development of mobile Internet, large data, cloud service, Internet of Things, Network and application demand increase rapidly, and bandwidth capacity significantly promotes, and optical-fiber network is to scale and the evolution of complicated direction.In traditional wavelength division multiplexed optical network; the network settings such as wavelength channel grid, signal rate, modulation format immobilize substantially; and this optical-fiber network can not according to customer demand amount of bandwidth; bandwidth resources that dynamic flexible ground is dispatched and service bandwidth demand matches; cause the bandwidth serious waste of wavelength division multiplexed optical network, be difficult to adapt to the high recovery rate of optical network protection technology and the growth requirement of low redundancy.But flexible spectrum optical-fiber network is the inexorable trend of development of optical network, it can according to the Service Properties of the size of service bandwidth granularity and business, is the frequency spectrum resource of service dynamic and distribution network neatly adaptively.Consider the Resourse Distribute characteristic of flexible spectrum optical-fiber network, need fully to excavate the network spectrum level of resources utilization, to adapt to the new feature of dynamic adjustable, controlled, the flexible allotment of intelligence of optical-fiber network, meet the development trend of future optical networks to bandwidth demand and resource efficiency.
In flexible spectrum optical-fiber network, user can, according to own service bandwidth granularity size, the adaptively bandwidth resources of distribution network, be conducive to improving efficiency of network resources.The notable feature of this optical-fiber network is the flexibility and changeabilities such as bandwidth, center spectrum, modulation format, the frequency spectrum resource appropriately cutting and match can be provided according to user bandwidth demand, easy formation optical-fiber network subchannel and super channel, maximally utilise the frequency spectrum resource of network.For the resist technology of flexible spectrum optical-fiber network; by adopting variable modulation format and wire rate; flexibly set up the protection optical channel of different spectral bandwidth, the fast quick-recovery resource of fault business is provided, is conducive to the contradictory relation dissolving business recovery efficiency and network spectrum resource efficiency.At present, for the resist technology of flexible spectrum optical-fiber network, the method mainly solved has two classes:
1) flexible spectrum optical-fiber network privacy protection technology.First the privacy protection path of configuration effort path and Link-disjoint paths in flexible spectrum optical-fiber network, secondly in these two operating paths according to the corresponding frequency spectrum resource of service bandwidth demand assignment.Especially, in Protection path, the protection frequency spectrum resource distributed can only shared by a business, and other business cannot use.
2) flexible spectrum optical-fiber network share protect technology.This resist technology and privacy protection technology similar, need the Protection path of configuration effort path and Link-disjoint paths, simultaneously on this two paths, distribute corresponding frequency spectrum resource.Especially, on Protection path, the frequency spectrum resource of distribution can share by multiple business.
In above-mentioned two kinds of solutions; first method is mainly each business and provides privacy protection path and special frequency spectrum resource; when the fault happens in operational of certain business; this business can be switched on Protection path fast; reserved protection frequency spectrum resource is utilized to carry out the quick protective switch of impaired business, to recover impaired business.But, because the frequency spectrum resource on Protection path can not be utilized by other business, so the frequency spectrum resource utilization ratio of this protected mode is low.Second method owing to adding frequency spectrum resource energy sharing functionality on Protection path, so the frequency spectrum resource efficiency of this protected mode is higher than privacy protection efficiency; But, because frequency spectrum resource can be shared, needing which impaired business of the priority restores by judging business, causing the resume speed of this guard method slower than dedicated path protection.
Although above-mentioned two kinds of guard methods can solve the failure problems of single business to a certain extent, when multiple business breaks down, can not effectively recover multiple impaired business.Especially; for frequency spectrum share resist technology; reserved share spectrum resources share by multiple impaired business; in business recovery process, the frequency spectrum resource that these impaired business keen competitions are shared, easily causes the bad competition of business recovery process; between initiation business, information is asynchronous; be difficult to the recovery order determining business, make business face the failure risk that cannot recover, thus waste the frequency spectrum resource of optical-fiber network and cause fault business recovery efficiency low.
Summary of the invention
This total inventive concept is to provide a kind of frequency spectrum share degree guard method divided based on the grade of service, it is characterized in that, comprises the following steps:
Step 1:
A, press partition of the level service request grade according to business service grade to described service request, the bandwidth demand of described service request is one or more frequency spectrum gap, and the protection bandwidth demand between described service request is one or more frequency spectrum gap;
B, the path be communicated with by source node and the destination node calculating link of described service request, and set up the group of paths be at least made up of two described paths, at least one is chosen as operating path from described group of paths, at least one is as Protection path, and define described operating path and have precedence over described Protection path and used, if and only if during described working path failure, just use described Protection path, described operating path and Protection path form by least one frequency spectrum gap;
C, according to described business service grade, determine the degree that the frequency spectrum gap in each described Protection path is shared, the height of described service request grade is inversely proportional to upper described frequency spectrum share degree.
Step 2: described service request seeks continuous and consistent frequency spectrums of operation gap according to bandwidth demand described in it and described protection bandwidth demand in described operating path, if required frequency spectrums of operation gap can be found, frequency spectrum resource on operating path is allocated successfully, and performs next step;
Step 3: described service request seeks continuous and consistent protection frequency spectrum gap according to described bandwidth demand and described protection bandwidth demand in described Protection path; When same protection frequency spectrum gap is used by the above service request simultaneously, use the described service request number of this frequency spectrum gap not higher than described frequency spectrum share degree; If meet the condition of two described in this step and described service request all can search out corresponding frequency spectrum gap on described Protection path, the frequency spectrum resource on Protection path is allocated successfully, then whole described service request is successfully established.
As a further improvement on the present invention, described step 1 also comprises:
D, according to described business service grade, determine each in described Protection path intermediate frequency spectrum gap by the priority used, its grade of service is higher, and its priority restores order is more forward.
As a further improvement on the present invention, in described step 1, also comprise:
E, threshold value according to business service grade and frequency spectrum share degree, determine the recovery order in same shared frequency spectrum between multiple described service request.
As a further improvement on the present invention, when all described service request perform described step 3 again after performing described step 2, or each described service request performs step 2 and step 3 successively.
As a further improvement on the present invention, in described step 1-B, the condition that the link in described path is communicated with at least is included between described source node and destination node and the frequency spectrum gap in route and described link can be found unoccupied.
As a further improvement on the present invention, in described step 1-C, frequency spectrum share degree is provided with frequency spectrum share degree threshold value, and in described Protection path, the numerical value of the described service request of each use frequency spectrum gap is not higher than described frequency spectrum share degree threshold value.
As a further improvement on the present invention, when arbitrary step cannot perform or perform failed in described step 1 to 3, then control its follow-up step and stop, and/or send warning.
Can also by a kind of frequency spectrum share degree protective device divided based on the grade of service, realize above-mentioned and/or other characteristic sum effectiveness, this device comprises:
-service request grade classification module, according to the grade of service, described service request can be divided into several ranks, the bandwidth demand of described service request is the frequency spectrum gap of or more, and the protection bandwidth demand between described service request is one or more frequency spectrum gap;
Module is set up in-path, the path that can be communicated with by the source node of described service request and destination node calculating link, and set up the group of paths be at least made up of two described paths, at least one is chosen as operating path from described group of paths, at least one is as Protection path, and define described operating path and have precedence over described Protection path and used, and if only if during described working path failure, just use described Protection path;
-frequency spectrum share degree arranges module, and this module according to business service grade, can determine the frequency spectrum gap sharing degree in each described Protection path, and the height of described service request grade is inversely proportional to the threshold value of the above-mentioned frequency spectrum share degree determined;
-the first frequency spectrum resource distribution module, can configure continuous and consistent frequency spectrums of operation gap according to bandwidth demand described in it and described protection bandwidth demand successively for each described service request in described operating path;
-the second frequency spectrum resource distribution module; can be that each described service request configures continuous and consistent protection frequency spectrum gap according to described bandwidth demand and described protection bandwidth demand successively in described Protection path; when same frequency spectrum gap is used by the above service request simultaneously, use the described service request number of this same frequency spectrum gap not higher than described frequency spectrum share degree.
Further, also comprise judge module, when performing unsuccessfully for above-mentioned arbitrary module or cannot perform, control whole device interrupt run.
Further, also comprise order and divide module, described order divides module can determine that described service request uses described Protection path in the following order when described working path failure:
(1), in the described service request that described frequency spectrum share degree is identical, recovery order is divided according to business service grade;
(2) in the described service request that described frequency spectrum share degree is not identical, divide recovery order according to described frequency spectrum share degree, described frequency spectrum share degree is lower, and its recovery order is higher.
Beneficial effect of the present invention is, the total design of the present invention is the survivability problem mainly for flexible spectrum optical-fiber network, how to effectively protect when business breaks down and fast quick-recovery, by introducing the basic thought of frequency spectrum share degree, carry out dividing to the different business grade of service and protect, by regulating the threshold value of frequency spectrum share degree adaptively, business is carried out to distribution and the optimization of frequency spectrum resource, to eliminate the harmful competition that sharing frequency spectrum resource causes fault business recovery process, and service failure recovery and spectrum efficiency restricting relation, the network survivability of guarantee business.
Accompanying drawing explanation
Fig. 1 is the flow chart of a kind of frequency spectrum share degree guard method based on grade of service division of the present invention;
Fig. 2 is the structural representation of a kind of frequency spectrum share degree protective device based on grade of service division of the present invention;
Wherein: 2-service request grade classification module; 4-sets up module in path; 6-frequency spectrum share degree arranges module; 8-first frequency spectrum resource distribution module; 10-second frequency spectrum resource distribution module; 12-order divides module.
Fig. 3 is the topology diagram of the flexible spectrum optical-fiber network in this total inventive concept one exemplary embodiment.
Fig. 4 is the frequency spectrum resource using state figure of the first embodiment in this total inventive concept.
Fig. 5 is the frequency spectrum resource using state figure of the second embodiment in this total inventive concept.
Fig. 6 is the frequency spectrum resource using state figure of the 3rd embodiment in this total inventive concept.
Embodiment
Below the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, for inventing a kind of flow chart of the frequency spectrum share degree guard method based on grade of service division, it specifically comprises the following steps:
Step 1:
A, press partition of the level service request grade according to business service grade to described service request, the bandwidth demand of described service request is one or more frequency spectrum gap, and the protection bandwidth demand between described service request is one or more frequency spectrum gap;
B, the path be communicated with by source node and the destination node calculating link of described service request, and set up the group of paths be at least made up of two described paths, at least one is chosen as operating path from described group of paths, at least one is as Protection path, and define described operating path and have precedence over described Protection path and used, if and only if during described working path failure, just use described Protection path, described operating path and Protection path form by least one frequency spectrum gap;
C, according to described business service grade, determine the degree that the frequency spectrum gap in each described Protection path is shared, the height of described service request grade is inversely proportional to upper described frequency spectrum share degree.
Step 2: described service request seeks continuous and consistent frequency spectrums of operation gap according to bandwidth demand described in it and described protection bandwidth demand in described operating path, if required frequency spectrums of operation gap can be found, frequency spectrum resource on operating path is allocated successfully, and performs next step;
Step 3: described service request seeks continuous and consistent protection frequency spectrum gap according to described bandwidth demand and described protection bandwidth demand in described Protection path; When same protection frequency spectrum gap is used by the above service request simultaneously, use the described service request number of this frequency spectrum gap not higher than described frequency spectrum share degree; If meet the condition of two described in this step and described service request all can search out corresponding frequency spectrum gap on described Protection path, the frequency spectrum resource on Protection path is allocated successfully, then whole described service request is successfully established.
As a further improvement on the present invention, described step 1 also comprises:
D, according to described business service grade, determine each in described Protection path intermediate frequency spectrum gap by the priority used, its grade of service is higher, and its priority restores order is more forward.
As a further improvement on the present invention, in described step 1, also comprise:
E, threshold value according to business service grade and frequency spectrum share degree, determine the recovery order in same shared frequency spectrum between multiple described service request.
As a further improvement on the present invention, when all described service request perform described step 3 again after performing described step 2, or each described service request performs step 2 and step 3 successively.
As a further improvement on the present invention, in described step 1-B, the condition that the link in described path is communicated with at least is included between described source node and destination node and the frequency spectrum gap in route and described link can be found unoccupied.
As a further improvement on the present invention, in described step 1-C, frequency spectrum share degree is provided with frequency spectrum share degree threshold value, and in described Protection path, the numerical value of the described service request of each use frequency spectrum gap is not higher than described frequency spectrum share degree threshold value.
As a further improvement on the present invention, when arbitrary step cannot perform or perform failed in described step 1 to 3, then control its follow-up step and stop, and/or send warning.
Can also by a kind of frequency spectrum share degree protective device divided based on the grade of service, realize above-mentioned and/or other characteristic sum effectiveness, this device comprises:
-service request grade classification module 2, according to the grade of service, described service request can be divided into several ranks, the bandwidth demand of described service request is one or more continuous print frequency spectrum gap, and the protection bandwidth demand between described service request is one or more frequency spectrum gap;
Module 4 is set up in-path, the path that can be communicated with by the source node of described service request and destination node calculating link, and set up the group of paths be at least made up of two described paths, at least one is chosen as operating path from described group of paths, at least one is as Protection path, and define described operating path and have precedence over described Protection path and used, if and only if during described working path failure, just use described Protection path, described operating path and Protection path form by least one frequency spectrum gap;
-frequency spectrum degree arranges module 6, can according to the grade of service, and determine that each described Protection path intermediate frequency spectrum gap is shared the degree of use, the height of described service request grade is inversely proportional to the above-mentioned frequency spectrum share degree determined;
-the first frequency spectrum resource distribution module 8, can configure continuous and consistent frequency spectrums of operation gap according to bandwidth demand described in it and described protection bandwidth demand successively for each described service request in described operating path;
-the second frequency spectrum resource distribution module 10; can be each described service request successively in described Protection path according to described bandwidth demand and described protection bandwidth demand configuring spectrum gap; when same frequency spectrum gap is used by the above service request simultaneously, use the described service request number of above-mentioned same frequency spectrum gap not higher than described frequency spectrum share degree.
As the further improvement of said apparatus, also comprise judge module, when above-mentioned arbitrary module performs unsuccessfully or cannot perform, control whole device interrupt run.
As the further improvement of said apparatus, also comprise order and divide module 12, described order divides module 12 can determine that described service request uses described Protection path in the following order when described working path failure:
(1), in the described service request that described frequency spectrum share degree is identical, recovery order is divided according to the grade of service;
(2) in the described service request that described frequency spectrum share degree is not identical, divide recovery order according to described frequency spectrum share degree, its recovery order that the threshold value of described frequency spectrum share degree is lower is higher.
To quote three one exemplary embodiment of this total inventive concept in detail now, its example is illustrated in accompanying drawing 3-6, and wherein, similar Reference numeral refers to similar element from start to finish.
As shown in Figure 3, its network topology structure figure of being made up of 5 nodes and 6 links.Fig. 4-6 represents under the threshold value of different spectral sharing degree, service request frequency spectrum resource using state, wherein f1, f2, f3 ... it is the numbering set of frequency spectrum gap.Service request R (s, d, b, g) represents, it represents the service request from source node s to destination node d, and the bandwidth demand required for it is b frequency spectrum gap, and the protection bandwidth between different business represents by g frequency spectrum gap.
In three embodiments of the present invention, be following 4 different service request, be respectively R1 (A; E, 3,1), R2 (A; E, 3,1), R3 (A; E, 3,1), R4 (A; E, 3,1); they are all from source node A to destination node E, and the bandwidth demand of business is all 3 frequency spectrum gaps, and protection bandwidth needs 1 frequency spectrum gap.
First embodiment of this total design, has following steps:
Step 1:
A, according to the grade of service, partition of the level service request grade is pressed to described service request, in the present embodiment, have the service request that four different, be respectively R1 (A, E, 3,1), R2 (A, E, 3,1), R3 (A, E, 3,1), R4 (A, E, 3,1), its grade of service is successively decreased successively, in these four service requests, bandwidth demand is all 3 frequency spectrum gaps, and protection bandwidth needs 1 frequency spectrum gap;
B, by the source node of described service request and destination node evaluation work path and Protection path, in above-mentioned four service request, they are all from source node A to destination node E, therefore in the present embodiment, three paths can be set up respectively, be respectively the path 1 (A-B-E) in Fig. 3; Path 2 (A-C-E); Path 3 (A-D-E); In these three paths, path selection 1 and path 2 are as operating path, and path 3 is Protection path.
C, according to business service grade, determine the threshold value of each described Protection path intermediate frequency spectrum gap sharing degree, in the present embodiment, set its grade of service and be the superlative degree, namely all need to be used alone Protection path intermediate frequency spectrum gap, the threshold value MSD of its frequency spectrum share degree is 1;
D, according to described business service grade, determine the recovery order of service request between different spectral sharing degree, i.e. the first recovery order, frequency spectrum share degree and the first recovery order are inversely proportional to, namely frequency spectrum share degree is lower, and its first recovery order is more forward, in the present embodiment 1, only has a frequency spectrum share degree, therefore without the need to determining the first recovery order;
E, according to business service grade, determine between the multiple described service request in same frequency spectrum share degree recovery order, namely second recovery order, in the present first embodiment, the second recovery order is followed successively by R1 (A, E from front to back, 3,1), R2 (A, E, 3,1), R3 (A, E, 3,1), R4 (A, E, 3,1).
Step 2: for first service request R1 (A, E, 3,1), the evaluation work path from source node A to destination node E, the operating path here selected by service request R1 (A, E, 3,1) is path 1 (A-B-E).In path 1 (A-B-E), according to the bandwidth demand of business service and protection bandwidth, need to find in path 1 (A-B-E) the frequency spectrum gap that 3 continuous and consistent, then can reserve frequency spectrum gap and be numbered { f1, f2, f3} are as the frequency spectrums of operation resource of service request R1;
Step 3: for first service request R1 (A, E, 3, 1), selecting paths 3 (A-D-E) is Protection path, on Protection path 3 (A-D-E), according to bandwidth demand and the protection amount of bandwidth of business, and frequency spectrum share degree searches available spectrum resources, here the threshold value MSD of frequency spectrum share degree is 1, namely each service request all needs the frequency spectrum gap that exclusively enjoys in Protection path 3, reserved frequency spectrum gap is numbered { f1, f2, f3} is as service request R1 (A, E, 3, 1) frequency spectrum resource, so far, foundation is finished the work path and Protection path, and distribute their corresponding frequency spectrum resources, service request R1 (A, E, 3, 1) be successfully established.
Similarly, service request R2 (A, E; 3,1) repeat above-mentioned steps, frequency spectrum gap can be reserved respectively on operating path 1 (A-B-E) and Protection path 3 (A-D-E) and be numbered { f5; f6, f7} as this business work and protection frequency spectrum resource.Here owing to needing the protection bandwidth of a frequency spectrum gap between two different service request; so number at operating path 1 (A-B-E) and the upper frequency spectrum gap of Protection path 3 (A-D-E), { f4} is as service request R1 (A; E; 3; 1) and R2 (A; E, 3,1) the protection bandwidth between.
For service request R3 (A; E; 3,1) and R4 (A, E; 3; 1), selected path 2 (A-C-E) and path 3 (A-D-E), can by repeating above-mentioned steps 2-3 as operating path and Protection path; reserved frequency spectrums of operation gap, protection frequency spectrum gap and protection bandwidth on selected operating path and Protection path, table specific as follows:
Table 1: in the first embodiment, the frequency spectrum gap shared by R3, R4
As Fig. 5 and 6 is respectively second embodiment of the invention and the 3rd embodiment intermediate frequency spectrum resource using status figure; second embodiment and the 3rd embodiment identical with the step between the first embodiment; difference is only the difference between the threshold value MSD of frequency spectrum share degree; thus cause in Protection path, take the difference of frequency spectrum gap resource.
As in the first embodiment, frequency spectrum degree threshold value is MSD=1, and upper table and Fig. 4 set forth, and in the second embodiment and the 3rd embodiment, frequency spectrum degree threshold value is respectively MSD=2 and MSD=4, and it takies operating path and Protection path is respectively described in following table:
Table 2: in second and third embodiment, the frequency spectrum gap that each service request takies in operating path
Table 3: in second and third embodiment, the frequency spectrum gap that each service request takies in Protection path
Above embodiment is only the present invention's execution mode wherein, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1., based on the frequency spectrum share degree guard method that the grade of service divides, it is characterized in that, comprise the following steps:
Step 1:
A, press partition of the level service request grade according to business service grade to described service request, the bandwidth demand of described service request is one or more frequency spectrum gap, and the protection bandwidth demand between described service request is one or more frequency spectrum gap;
B, the path be communicated with by source node and the destination node calculating link of described service request, and set up the group of paths be at least made up of two described paths, at least one is chosen as operating path from described group of paths, at least one is as Protection path, and define described operating path and have precedence over described Protection path and used, if and only if during described working path failure, just use described Protection path, described operating path and Protection path form by least one frequency spectrum gap;
C, according to described business service grade, determine the degree that the frequency spectrum gap in each described Protection path is shared, the height of described service request grade is inversely proportional to upper described frequency spectrum share degree.
Step 2: described service request seeks continuous and consistent frequency spectrums of operation gap according to bandwidth demand described in it and described protection bandwidth demand in described operating path, if required frequency spectrums of operation gap can be found, frequency spectrum resource on operating path is allocated successfully, and performs next step;
Step 3: described service request seeks continuous and consistent protection frequency spectrum gap according to described bandwidth demand and described protection bandwidth demand in described Protection path; When same protection frequency spectrum gap is used by the above service request simultaneously, use the described service request number of this frequency spectrum gap not higher than described frequency spectrum share degree; If meet the condition of two described in this step and described service request all can search out corresponding frequency spectrum gap on described Protection path, the frequency spectrum resource on Protection path is allocated successfully, then whole described service request is successfully established.
2. a kind of frequency spectrum share degree guard method divided based on the grade of service according to claim 1, it is characterized in that, described step 1 also comprises:
D, according to described business service grade, determine each in described Protection path intermediate frequency spectrum gap by the priority used, its grade of service is higher, and its priority restores order is more forward.
3. a kind of frequency spectrum share degree guard method divided based on the grade of service according to claims 1 or 2, is characterized in that, in described step 1, also comprise:
E, threshold value according to business service grade and frequency spectrum share degree, determine the recovery order in same shared frequency spectrum between multiple described service request.
4. a kind of frequency spectrum share degree guard method divided based on the grade of service according to claim 3; it is characterized in that; when all described service request perform described step 3 again after performing described step 2, or each described service request performs step 2 and step 3 successively.
5. a kind of frequency spectrum share degree guard method divided based on the grade of service according to claim 4; it is characterized in that; in described step 1-B, the condition that the link in described path is communicated with at least is included between described source node and destination node and the frequency spectrum gap in route and described link can be found unoccupied.
6. a kind of frequency spectrum share degree guard method divided based on the grade of service according to claim 5; it is characterized in that; in described step 1-C; frequency spectrum share degree is provided with frequency spectrum share degree threshold value; in described Protection path, the numerical value of the described service request of each use frequency spectrum gap is not higher than described frequency spectrum share degree threshold value.
7. a kind of frequency spectrum share degree guard method divided based on the grade of service according to claim 6, is characterized in that, when arbitrary step cannot perform or perform failed in described step 1 to 3, then controls its follow-up step and stops, and/or send warning.
8., based on the frequency spectrum share degree protective device that the grade of service divides, it is characterized in that, comprising:
-service request grade classification module, according to the grade of service, described service request can be divided into several ranks, the bandwidth demand of described service request is the frequency spectrum gap of or more, and the protection bandwidth demand between described service request is one or more frequency spectrum gap;
Module is set up in-path, the path that can be communicated with by the source node of described service request and destination node calculating link, and set up the group of paths be at least made up of two described paths, at least one is chosen as operating path from described group of paths, at least one is as Protection path, and define described operating path and have precedence over described Protection path and used, and if only if during described working path failure, just use described Protection path;
-frequency spectrum share degree arranges module, and this module according to business service grade, can determine the frequency spectrum gap sharing degree in each described Protection path, and the height of described service request grade is inversely proportional to the threshold value of the above-mentioned frequency spectrum share degree determined;
-the first frequency spectrum resource distribution module, can configure continuous and consistent frequency spectrums of operation gap according to bandwidth demand described in it and described protection bandwidth demand successively for each described service request in described operating path;
-the second frequency spectrum resource distribution module; can be that each described service request configures continuous and consistent protection frequency spectrum gap according to described bandwidth demand and described protection bandwidth demand successively in described Protection path; when same frequency spectrum gap is used by the above service request simultaneously, use the described service request number of this same frequency spectrum gap not higher than described frequency spectrum share degree.
9. a kind of frequency spectrum share degree protective device divided based on the grade of service according to claim 8, is characterized in that, also comprise judge module, when performing unsuccessfully for above-mentioned arbitrary module or cannot perform, control whole device interrupt run.
10. a kind of frequency spectrum share degree protective device divided based on the grade of service according to Claim 8 or described in 9; it is characterized in that; also comprise order and divide module, described order divides module can determine that described service request uses described Protection path in the following order when described working path failure:
(1), in the described service request that described frequency spectrum share degree is identical, recovery order is divided according to business service grade;
(2) in the described service request that described frequency spectrum share degree is not identical, divide recovery order according to described frequency spectrum share degree, described frequency spectrum share degree is lower, and its recovery order is higher.
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| CN106685572A (en) * | 2016-12-29 | 2017-05-17 | 重庆邮电大学 | Cycle stepping recovery method based on bandwidth fairness in WDM optical network |
| CN106992945A (en) * | 2017-05-21 | 2017-07-28 | 北京工业大学 | A kind of optical-fiber network frequency spectrum resource asymmetric distribution method and apparatus |
| CN106992810A (en) * | 2017-01-23 | 2017-07-28 | 苏州大学 | Consider the shared protection route and frequency spectrum distributing method of joint probability of malfunction constraint |
| CN107026803A (en) * | 2017-01-23 | 2017-08-08 | 苏州大学 | Route and frequency spectrum distributing method and system based on shared protection |
| CN111711517A (en) * | 2020-07-23 | 2020-09-25 | 苏州大学 | Quantum key distribution protection method and system based on service security level |
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