CN108616782A - A kind of frequency spectrum distributing method based on the optimization of non-intersecting connection group in elastic optical network - Google Patents
A kind of frequency spectrum distributing method based on the optimization of non-intersecting connection group in elastic optical network Download PDFInfo
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- CN108616782A CN108616782A CN201810296202.3A CN201810296202A CN108616782A CN 108616782 A CN108616782 A CN 108616782A CN 201810296202 A CN201810296202 A CN 201810296202A CN 108616782 A CN108616782 A CN 108616782A
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- 230000000903 blocking effect Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 10
- 239000012634 fragment Substances 0.000 description 7
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
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- H04Q2011/0086—Network resource allocation, dimensioning or optimisation
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Abstract
The invention discloses the frequency spectrum distributing methods based on the optimization of non-intersecting connection group in a kind of elastic optical network, include the following steps：First according to the bandwidth demand and routing length foundation connection group picture occupied needed for each arrival business；By all business according to bandwidth demand size descending arrange, the big business of preferential bandwidth allocation demand, if there are two or more than two business bandwidth demand having the same, be preferentially allocated to wherein routeing the big business of length；After the business preferentially distributed is determined, which is put into non-intersecting connection group using reaching matching strategy distribution frequency spectrum for the first time and the business there are other business of intersection link to be then put into intersection connection group to distribute frequency spectrum using the last matching strategy that reaches.The present invention has the advantages that network link utilization rate is high and service blocking rate is low.
Description
Technical field
The present invention relates to elastic optical network, frequency spectrum resource distribution technique fields, and in particular to base in a kind of elastic optical network
In the frequency spectrum distributing method of non-intersecting connection group optimization.
Background technology
Traditional wavelength-division multiplex (WDM, Wavelength Division Multiplexing) network uses fixed-grid
The frequency spectrum method of salary distribution, thicker frequency spectrum granularity results in that the optical-fiber network availability of frequency spectrum is low and flexibility is poor.In order to reduce
The waste of frequency spectrum resource, elastic optical network (EON, Elastic Optical Network) introduce light orthogonal frequency division multiplexing (O-
OFDM, Optical Orthogonal Frequency Division Multiplexing) technology, it supports traditional WDM
The frequency band (FS, Frequency Slot) that wavelength channel is converted into smaller frequency spectrum granularity carries out resource allocation, while can root
It is distributed according to business demand or combines corresponding frequency band, to improve network resource utilization and efficiency of transmission.
In elastic optical network, need to establish a routing end to end for each newly arrived business and need to be at every
Enough continuous frequency spectrum resources are distributed in chain road, that is, route frequency spectrum and distribute (RSA, Routing and
SpectrumAllocation).Frequency spectrum distribution needs to meet the constraint of frequency spectrum coherence and continuity：Frequency spectrum consistency constraint refers to
Each business must tie up identical frequency band on all chain roads being routed across；Spectral continuity constraint refers to each business
The frequency band occupied in each of the links must be continuous nonseptate.In the dynamic foundation of network connection and demolishing process, meeting
There is remaining situation that can be discontinuous with frequency band or inconsistent adjacent idle frequency spectrum in single link, referred to as frequency spectrum fragment (SF,
Spectrum Fragmentation) problem, being likely to result in network resource utilization reduces and the increase of service request blocking rate
The problems such as.
It is distributed for the frequency spectrum in elastic optical network and fragment problems, academia proposes some frequency spectrum fragments reconstruct plan
Slightly, but fragment Reconstruction Mechanism is possible to interrupting service transmission, to reduce business efficiency of transmission.For this disadvantage,
SeydouBa etc. proposes a kind of de-fragmentation strategies for the business transmitted on operating path and backup path in exchange 1+1, will
The business transmitted on operating path is exchanged with backup path, and defragmentation is carried out on backup path, to ensure data in work
Make not interrupt transmission on path, the disadvantage is that defragmentation mechanism can be just triggered under given conditions, for improving frequency spectrum money
Source utilization rate has certain limitation [Seydou Ba, Bijoy Chand Chatterjee, Eiji
Oki.Defragmentation Scheme Based on Exchanging Primary and Backup Paths in 1+
1 Path Protected Elastic Optical Networks[C].Networking IEEE/ACM
Transactions,2017(25):1717-1731.].Xin Chen etc. propose a kind of routing frequency spectrum point based on fragment perception
With strategy, system resource capacity is determined in conjunction with bandwidth allocation and service request size, using the minimum frequency spectrum of degree of fragmentation point
With scheme, its advantage is that network blocking probability is low, the disadvantage is that do not consider frequency spectrum distribution and service request rate relationship [X.Chen,
J.Li,P.Zhu,R.Tang,Z.Chen and Y.He,Fragmentation-aware routing and spectrum
allocation scheme based on distribution of traffic bandwidth in elastic
optical networks.in IEEE/OSA Journal of Optical Communications and
Networking,Nov.1,2015,11(7):1064-1074.].It is whole that H.L.Liu etc. proposes the fragmentation based on frequency spectrum subregion
Spectrum allocation strategy is managed, reserved area is defined by request type and traffic intensity, has available frequency band to be distributed using First Fit,
Otherwise minimum conflict area is searched using Last Fit distribution, is finally enabled recombination mechanism dynamic and is calculated special frequency spectrum blocks.Its is excellent
Point is availability of frequency spectrum height, it is contemplated that the allocation result under different request rates calculates multiple the disadvantage is that as number of partitions increases
Miscellaneous degree increases very fast [H.L.Liu, L.Lv, Y.Chen and C.Wei.Fragmentation-Avoiding
SpectrumAssignment Strategy Based on Spectrum Partition for Elastic Optical
Networks.in IEEE Photonics Journal,Oct.2017,5(9):1-13.]。
Invention content
The object of the present invention is to provide a kind of elastic optical nets that can be improved network link utilization rate and reduce service blocking rate
Frequency spectrum distributing method based on the optimization of non-intersecting connection group in network.
To achieve the above object, present invention employs following technical solutions：Based on not in a kind of elastic optical network
The frequency spectrum distributing method for intersecting the optimization of connection group, includes the following steps：
Step (1)：It is a connection group by the service definition that each request reaches and is labeled as a vertex, and by every
The bandwidth demand and routing length of a business generate vertex parameter, and vertex is stored in vertex set, until what all requests reached
Business is labeled；
Step (2)：If having intersection link between two business, side is established between the corresponding vertex of two business, and
Side is stored in line set, until all intersection links have traversed；
Step (3)：The line set that the vertex set obtained according to step (1) is obtained with step (2) generates connection group picture；
Step (4)：All ungrouped vertex are arranged according to bandwidth demand size descending, when the maximum top of bandwidth demand
When there are two points or two or more, step (5) is executed；When the maximum vertex of bandwidth demand only there are one when, select bandwidth demand
Maximum vertex executes step (6) as label vertex；
Step (5)：By the identical vertex of bandwidth demand by routing length descending arrangement, the big vertex of selection routing length is made
To mark vertex；
Step (6)：The business of vertex correspondence will be marked to be put into non-intersecting connection group, using for the first time reach matching strategy into
Then the business of other vertex correspondences adjacent with label vertex is put into and intersects in connection group by line frequency spectrum distribution, and using most
Matching strategy is reached afterwards carries out frequency spectrum distribution；
Step (7)：If there is residue not to be grouped vertex, (4) are thened follow the steps, until completing the frequency spectrum distribution of all business.
Further, the frequency spectrum distributing method based on the optimization of non-intersecting connection group in a kind of elastic optical network above-mentioned,
In：In step (1), service request arrival rate obeys the Poisson distribution that mean value is λ, and it is the negative of μ that the duration, which obeys mean value,
Exponential distribution.
Through the implementation of the above technical solution, the beneficial effects of the invention are as follows：Pass based on fragment Yu service request characteristic
System, converts network service topological diagram to construction annexed drawings, link condition that can clearly between reflection business, by preferential
The bandwidth allocation demand high business big with routing length, can be effectively reduced network blocking probability, pass through and divide non-intersecting connection
Group and the spectrum allocation strategy for intersecting connection group can avoid the frequency spectrum nonuniformity of different links as far as possible, to reduce network
In degree of fragmentation.
Description of the drawings
Fig. 1 is using the frequency spectrum allocation result schematic diagram obtained after the First Fit strategies described in background technology.
Fig. 2 is the frequency spectrum distributing method based on the optimization of non-intersecting connection group in a kind of elastic optical network of the present invention
Flow diagram.
Fig. 3 is the structural schematic diagram of network topology in the present invention.
Fig. 4 is the structural schematic diagram that group picture is connected in the present invention.
Fig. 5 is to use the frequency spectrum distribution side optimized based on non-intersecting connection group in a kind of elastic optical network of the present invention
The frequency spectrum allocation result schematic diagram obtained after method.
Specific implementation mode
The invention will be further described in the following with reference to the drawings and specific embodiments.
As shown in Fig. 2, the frequency spectrum distributing method based on the optimization of non-intersecting connection group in a kind of elastic optical network, packet
Include following steps：
Step (1)：The business C that each request is reachediIt is defined as a connection group and is labeled as a vertex vi, and
Vertex parameter w is generated by the bandwidth demand of each businessi, vertex parameter r is generated by the routing length of each businessi, by vertex vi
(wi, ri) deposit vertex set { V }, until the business that all requests reach is labeled；I.e.：Mark all service request C1,
C2... ... C12For vertex v1, v2... ..., v12, vertex parameter is generated by the bandwidth demand and routing length of each request respectively
(w1,r1),(w2,r2) ... ..., (w12,r12), wherein N number of service request reaches, and it is λ that service request arrival rate, which obeys mean value,
Poisson distribution, the duration obey mean value be μ quantum condition entropy；
6 nodes, the network topological diagram of 8 links are shown in Figure 3, it is assumed that have 12 business to arrive in a time window
It reaches, and each corresponding source of business-destination node routing and bandwidth demand are as shown in table 1：
1 business routing iinformation of table
| Business | Source node | Destination node | Routed path | Occupy link | It route length | Bandwidth demand |
| C1 | A | B | A-F-B | 2,3 | 2 | 2 |
| C2 | F | C | F-B-C | 3,4 | 2 | 1 |
| C3 | B | E | B-C-E | 4,5 | 2 | 3 |
| C4 | C | E | C-E | 5 | 1 | 3 |
| C5 | B | F | B-A-F | 1,2 | 2 | 1 |
| C6 | F | B | F-B | 3 | 1 | 2 |
| C7 | B | D | B-C-D | 4,6 | 2 | 1 |
| C8 | B | C | B-C | 4 | 1 | 1 |
| C9 | C | E | C-D-E | 6,7 | 2 | 1 |
| C10 | C | F | C-D-E-F | 6,7,8 | 3 | 1 |
| C11 | D | E | D-E | 7 | 1 | 1 |
| C12 | A | B | A-B | 1 | 1 | 4 |
Step (2)：If two business CiAnd CjBetween have intersection link, then in the corresponding vertex v of two businessiAnd vjIt
Between establish side eij, and by side eijIt is stored in line set { E }, until all intersection links have traversed；
Step (3)：The line set { E } that the vertex set { V } obtained according to step (1) is obtained with step (2), which generates, to be connected
Group picture；As shown in figure 4, with business C2For, C as shown in Table 12Be bandwidth demand be 1, routing length be 2 business, by the industry
The vertex parameter that business generates is v2=(1,2)；In addition business C2By link 3, link 4, the industry of this both links has been also passed through
Business has C1、C3、C6、C7And C8, then vertex v2With v1、v3、v6、v7And v8Connection is established respectively, traverses all business and intersection link
Produce connection group picture；
Step (4)：By all ungrouped vertex according to bandwidth demand wiSize descending arranges, when bandwidth demand is maximum
When there are two vertex or two or more, step (5) is executed；When the maximum vertex of bandwidth demand only there are one when, select bandwidth need
Seek wiMaximum vertex is as label vertex v0, execute step (6)；
Step (5)：By bandwidth demand wiIdentical vertex is by routing length riDescending arranges, selection routing length riBig
Vertex is as label vertex v0；
Step (6)：Vertex v will be marked0Corresponding business is put into non-intersecting connection group, using reaching matching strategy for the first time
(FirstFit strategies) carries out frequency spectrum distribution, then will be with label vertex v0The business of other adjacent vertex correspondences is put into intersection
In connection group, and frequency spectrum distribution is carried out using the last matching strategy (LastFit strategies) that reaches；
Step (7)：If there is residue not to be grouped vertex, (4) are thened follow the steps, until completing the frequency spectrum distribution of all business.
As shown in figure 3, all vertex are based on bandwidth demand wiDescending, maximum w12=4, then by vertex v12It is put into
In non-intersecting connection group, corresponding business C12Using First Fit frequency spectrum allocation algorithms；In addition, and v12Adjacent vertex v5It puts
Enter to intersect in connection group, corresponding business C5Using Last Fit frequency spectrum allocation algorithms；It is not grouped in vertex in residue, bandwidth needs
Seek wiThere is v on maximum vertex3And v4, by routeing length riDescending selectes v3It is put into non-intersecting connection group as label vertex, with
The adjacent v in the vertex2、v4、v7And v8Be put into intersection connection group, corresponding business be based on Last Fit frequency spectrums allocation algorithms by according to
Sub-distribution；It is not grouped in vertex at remaining and selectes wiAnd riMaximum vertex v1It is put into non-intersecting connection group, v adjacent thereto6It puts
Enter to intersect connection group, and then corresponding business is assigned to the frequency band of respective links；Remaining three vertex wiIt is equal, according to ri
Descending chooses v10It is put into non-intersecting connection group, corresponding business is assigned, and all vertex adjacent with the vertex are put into phase commissure
After connecing group, all vertex have traversed, and table 2 is that final each vertex is grouped situation, using frequency spectrum distribution side of the present invention
Business frequency spectrum distribution condition after method optimization is shown in Figure 5, by the way that Fig. 5 is used a kind of elastic optical network of the present invention
In after the frequency spectrum distributing method based on the optimization of non-intersecting connection group obtained frequency spectrum allocation result schematic diagram (as shown in Figure 5) with adopt
Compared with the frequency spectrum allocation result schematic diagram (as shown in Figure 1) obtained after the FirstFit strategies described in background technology it is found that
Frequency spectrum distributing method based on the optimization of non-intersecting connection group in a kind of elastic optical network of the present invention is than institute in background technology
The network link utilization rate for the frequency spectrum distributing method stated is high and service blocking rate is low.
2 non-intersecting connection group of table establishes situation with connection group is intersected
| Step 1 | Step 2 | Step 3 | Step 4 | |
| Non-intersecting connection group | v12 | v3 | v1 | v10 |
| Intersect connection group | v5 | v2 v4 v7 v8 | v6 | v9 v11 |
Through the implementation of the above technical solution, it is an advantage of the invention that：Relationship based on fragment Yu service request characteristic, will
Network service topological diagram is converted into construction annexed drawings, link condition that can clearly between reflection business, by preferentially distributing
Bandwidth demand height and the big business of routing length, can be effectively reduced network blocking probability, by divide non-intersecting connection group and
The spectrum allocation strategy of intersection connection group can avoid the frequency spectrum nonuniformity of different links as far as possible, to reduce in network
Degree of fragmentation.
Claims (2)
1. the frequency spectrum distributing method based on the optimization of non-intersecting connection group in a kind of elastic optical network, it is characterised in that：Including following
Step：
Step (1)：It is a connection group by the service definition that each request reaches and is labeled as a vertex, and by each industry
The bandwidth demand and routing length of business generate vertex parameter, and vertex is stored in vertex set, until the business that all requests reach
It is labeled；
Step (2)：If having intersection link between two business, side is established between the corresponding vertex of two business, and by side
It is stored in line set, until all intersection links have traversed；
Step (3)：The line set that the vertex set obtained according to step (1) is obtained with step (2) generates connection group picture；
Step (4)：All ungrouped vertex are arranged according to bandwidth demand size descending, when the maximum vertex of bandwidth demand has
Two or more when, execute step (5)；When the maximum vertex of bandwidth demand only there are one when, select bandwidth demand maximum
Vertex as label vertex, execute step (6)；
Step (5)：By the identical vertex of bandwidth demand by routing length descending arrangement, the vertex for selecting routing length big is as mark
Remember vertex；
Step (6)：The business of vertex correspondence will be marked to be put into non-intersecting connection group, using reaching matching strategy for the first time into line frequency
Then the business of other vertex correspondences adjacent with label vertex is put into and intersects in connection group, and uses and finally arrive by spectrum distribution
Frequency spectrum distribution is carried out up to matching strategy；
Step (7)：If there is residue not to be grouped vertex, (4) are thened follow the steps, until completing the frequency spectrum distribution of all business.
2. the frequency spectrum distributing method based on the optimization of non-intersecting connection group in a kind of elastic optical network according to claim 1,
It is characterized in that：In step (1), service request arrival rate obeys the Poisson distribution that mean value is λ, and the duration obeys mean value
For the quantum condition entropy of μ.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111615022A (en) * | 2020-05-20 | 2020-09-01 | 重庆邮电大学 | Conflict resolution method for all-optical nodes of space division multiplexing elastic optical network |
| CN112968741A (en) * | 2021-02-01 | 2021-06-15 | 中国民航大学 | Adaptive broadband compressed spectrum sensing algorithm based on least square vector machine |
| CN113965837A (en) * | 2021-12-21 | 2022-01-21 | 华南师范大学 | Optical network dynamic spectrum partitioning method, device, storage medium and computer equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102523068A (en) * | 2011-12-07 | 2012-06-27 | 北京邮电大学 | Frequency spectrum resource distribution method in elastic optical network and system thereof |
| WO2013045521A1 (en) * | 2011-09-30 | 2013-04-04 | Telefonica, S.A. | A system and a method to perform spectrum allocation in an optical network |
| WO2013169158A1 (en) * | 2012-05-10 | 2013-11-14 | Telefonaktiebolaget L M Ericsson (Publ) | Node and method for iterative improvement of spectral use |
| CN106953710A (en) * | 2017-03-15 | 2017-07-14 | 重庆邮电大学 | What the distribution of minimum cost frequency spectrum and fragment were perceived in elastic optical network reconfigures routing mechanism |
| CN106961641A (en) * | 2017-02-24 | 2017-07-18 | 南京邮电大学 | A kind of frequency spectrum distributing method perceived in elastic optical network based on service priority |
| CN107360478A (en) * | 2017-07-10 | 2017-11-17 | 中国科学院计算技术研究所 | Route Selection and frequency spectrum distributing method in elastic optical network |
-
2018
- 2018-04-03 CN CN201810296202.3A patent/CN108616782B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013045521A1 (en) * | 2011-09-30 | 2013-04-04 | Telefonica, S.A. | A system and a method to perform spectrum allocation in an optical network |
| CN102523068A (en) * | 2011-12-07 | 2012-06-27 | 北京邮电大学 | Frequency spectrum resource distribution method in elastic optical network and system thereof |
| WO2013169158A1 (en) * | 2012-05-10 | 2013-11-14 | Telefonaktiebolaget L M Ericsson (Publ) | Node and method for iterative improvement of spectral use |
| CN106961641A (en) * | 2017-02-24 | 2017-07-18 | 南京邮电大学 | A kind of frequency spectrum distributing method perceived in elastic optical network based on service priority |
| CN106953710A (en) * | 2017-03-15 | 2017-07-14 | 重庆邮电大学 | What the distribution of minimum cost frequency spectrum and fragment were perceived in elastic optical network reconfigures routing mechanism |
| CN107360478A (en) * | 2017-07-10 | 2017-11-17 | 中国科学院计算技术研究所 | Route Selection and frequency spectrum distributing method in elastic optical network |
Non-Patent Citations (1)
| Title |
|---|
| 黄天天: "《面向弹性光网络中路由和频谱分配问题的算法研究》", 《 中国优秀硕士学位论文全文数据库 信息科技辑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111615022A (en) * | 2020-05-20 | 2020-09-01 | 重庆邮电大学 | Conflict resolution method for all-optical nodes of space division multiplexing elastic optical network |
| CN111615022B (en) * | 2020-05-20 | 2022-04-19 | 重庆邮电大学 | Conflict resolution method for all-optical nodes of space division multiplexing elastic optical network |
| CN112968741A (en) * | 2021-02-01 | 2021-06-15 | 中国民航大学 | Adaptive broadband compressed spectrum sensing algorithm based on least square vector machine |
| CN113965837A (en) * | 2021-12-21 | 2022-01-21 | 华南师范大学 | Optical network dynamic spectrum partitioning method, device, storage medium and computer equipment |
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