CN103312630B - Based on the Resources re engineering method of business sequence remaining time in a kind of elastic exchange network - Google Patents
Based on the Resources re engineering method of business sequence remaining time in a kind of elastic exchange network Download PDFInfo
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- CN103312630B CN103312630B CN201310185273.3A CN201310185273A CN103312630B CN 103312630 B CN103312630 B CN 103312630B CN 201310185273 A CN201310185273 A CN 201310185273A CN 103312630 B CN103312630 B CN 103312630B
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Abstract
The invention discloses a kind of method based on the Resources re engineering of business sequence remaining time in elastic exchange network, relate to elastic exchange network network field.This method in elasticity Switched Optical net, when transmit a kind of can estimate the business in required transmission time by computer time, and when giving this traffic assignments resource, the business transmission time is also treated as a parameter and is encapsulated in each frequency gap that business takies.When this business of Internet Transmission, when needing the frequency spectrum reconfiguration to Internet resources, according to the mode that business sorts remaining time in order, business is arranged in the left end of frequency spectrum to right-hand member, when business takies that frequently the gap time, continuity was in time kept to 0, continuity in time, the frequency gap resource discharged can form continuous print frequency spectrum resource, therefore achieve the continuous of the maximum likelihood of idle gap number frequently, thus reduce frequency spectrum fragment, reduce frequency spectrum reconfiguration number of times and reduce service blocking rate.
Description
Technical field
The invention belongs to elastic exchange network field, relate to the method based on the Resources re engineering of sequence remaining time in elasticity DIALOGUES.
Background technology
The concept of frequency spectrum burst elastic optical network: carry out Resources allocation by the granularity being better than a wavelength, namely becomes more closely-spaced frequency gap a wavelength division.The object of frequency spectrum burst elastic optical network is by introducing the business that elasticity granularity provides 100Gb/s or higher in optical frequency territory, and the frequency spectrum resource in given route is fragmented as end-to-end light path distributes the bandwidth of suitable size instead of fixed size.In frequency spectrum burst elastic optical network, light path is expanded according to flow and user's request or is shunk, and its special feature is the segmentation of frequency spectrum resource and polymerization, the efficient allocation of multiple data rates and the Flexible change of Resources allocation.
In frequency spectrum burst elastic optical network, consistent wavelength constraints conversion in wavelength switched optical network has been become frequency spectrum consistency constraint, generic reference numeral from low to high after each link spectral resource burst, each section of link is selected the frequency gap of identical label can meet consistency, and the frequency gap used together must have continuous print label, with allocation algorithm from minimum label (FF algorithm).In network when there being new service request to arrive, we should set up new passage for it and distribute rational frequency spectrum resource, but the distribution of resource must meet spectral continuity and consistency constraint, on every bar optical fiber link, namely distribute the continuous frequency spectrum of same sequence number.End along with business transmission connects and will be removed, and shared resource also can be released and for new service request.In dynamic service request situation, the foundation of channel and demolishing process will cause gap resource fragmentation frequently, and due to the noncontinuity of these resource fragmentation, its utilance can be very low.If can integrate namely to these frequency gap resources: frequency spectrum reconfiguration, then can be used for new service request.Frequency spectrum reconfiguration will by carrying out frequency spectrum shift to realize to existing business, when Resources re engineering in the past, no matter for any business, frequency spectrum reconfiguration is exactly that the frequency gap resource of reconstituted links is sequentially arranged in the left end of frequency spectrum to right-hand member according to the resource shared by business, situation about existing like this is, along with the continuity of time, business takies the frequently gap time and is kept to 0, the frequency gap number of business release can not realize the continuous of maximum possible, as shown in Figure 1, make link need frequent sequence, add service blocking rate.
Summary of the invention
(1) technical problem that will solve
The object of the invention is to solve in frequency spectrum burst elastic optical network, when transmit a kind of can estimate the business in required transmission time by computer time, and during because of each link spectral Resources re engineering, adopt the frequency gap number of FF algorithm business release can not realize the continuous print of maximum possible, link sequence is frequent, the problem that service blocking rate is high.
(2) technical scheme
Technical solution of the present invention is as follows:
Each because link nervous and need to carry out Resources re engineering to link time, according to the size of business remaining time, according to from small to large, as shown in Figure 2, or from big to small, mode as shown in Figure 3 sorts, and the left end being sequentially arranged in frequency spectrum is to right-hand member.
After sequence, business takies the frequently gap time and continuity in time can be kept to 0.
Preferably, when business takies that frequently the gap time, continuity was in time kept to 0, continuity in time, the frequency gap resource discharged can form continuous print frequency spectrum resource.
Preferably, when frequency gap resource shared by business release, before the restructuring of next frequency spectrum, the frequency gap resource discharged and adjacent frequency spectrum form continuous print frequency spectrum resource.
The continuous print frequency spectrum resource that the frequency spectrum resource of release and adjacent frequency spectrum form can provide frequency spectrum resource for new business.
Preferably, the order that new business is arranged in frequency spectrum is, according to the corresponding Resources re engineering method based on business sequence remaining time, the mode of carrying out from small to large or is from big to small traffic assignments resource.
(3) beneficial effect
After the present invention carries out frequency spectrum reconfiguration according to the proposed method by the business remaining time of order from less to more, along with business holding time is kept to 0 gradually, the idle frequency spectrum of the business of releasing resource can realize farthest continuous, greatly reduce frequency spectrum fragment, improve the success rate for the required gap resource frequently of new business distribution, reduce LINK RECONFIGURATION number of times, thus effectively reduce service blocking rate.
Accompanying drawing explanation
Fig. 1 is the figure that the present invention uses the mode of FF algorithm frequency spectrum reconfiguration;
Fig. 2 is the figure of the present invention according to the remaining time of frequency spectrum reconfiguration mode from small to large;
Fig. 3 is the figure of the present invention according to the remaining time of frequency spectrum reconfiguration mode from big to small.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described further.Following examples only for illustration of the present invention, but are not used for limiting the scope of the invention.
In elastic exchange network, when carrying out Resources re engineering because link is nervous, the mode according to business order remaining time size sorts, and the frequency spectrum carried out reconstitutes at every turn.
Embodiment 1
When the mode according to business order remaining time size sorts, be sequentially arranged in the left end of frequency spectrum to right-hand member according to business according to the remaining time of order from less to more, as shown in Figure 2.
After sequence, business takies the frequently gap time and continuity in time can be kept to 0.
Because the business taking the left side of frequency spectrum is less than the business remaining time taken on the right of frequency spectrum remaining time, resource is first vacated than the right in the left side of frequency spectrum, and along with terminating successively of business duration, frequency spectrum resource from left to right vacates resource successively.
Because business is sequentially arranged in the left end of frequency spectrum to right-hand member according to the remaining time of order from less to more, after frequency spectrum resource is vacated, the idle frequency spectrum of the business on energy and former adjacent limit to the left forms continuous print idle frequency spectrum, like this, like this before next frequency spectrum reconfiguration arrives, idle frequency spectrum can realize farthest continuous, reduces frequency spectrum fragment.
The continuous print frequency spectrum resource that the frequency spectrum resource of release and adjacent frequency spectrum form can provide frequency spectrum resource for new business
The method that new business is arranged in frequency spectrum is, is traffic assignments resource successively according to idle frequency spectrum mode from small to large.
When the link circuit resource at frequency spectrum place is inadequate, again the frequency spectrum reconfiguration using the method is carried out to link.
Embodiment 2
When the mode according to business order remaining time size sorts, be sequentially arranged in the left end of frequency spectrum to right-hand member according to business according to the order of remaining time from many to few, as shown in Figure 3.
After sequence, business takies the frequently gap time and continuity in time can be kept to 0.
Because the business taking the left side of frequency spectrum is less than the business remaining time taking the frequency spectrum left side remaining time, resource is first vacated than the left side in the right of frequency spectrum, and along with terminating successively of business duration, frequency spectrum resource vacates resource from right to left successively.
Because business is sequentially arranged in the left end of frequency spectrum to right-hand member according to the order of remaining time from many to few, after frequency spectrum resource is vacated, the idle frequency spectrum of the business on energy and former adjacent limit to the right forms continuous print idle frequency spectrum, like this, like this before next frequency spectrum reconfiguration arrives, idle frequency spectrum can realize farthest continuous, reduces frequency spectrum fragment.
The continuous print frequency spectrum resource that the frequency spectrum resource of release and adjacent frequency spectrum form can provide frequency spectrum resource for new business
The method that new business is arranged in frequency spectrum is, is traffic assignments resource successively according to idle frequency spectrum mode from small to large.
When the link circuit resource at frequency spectrum place is inadequate, again the frequency spectrum reconfiguration using the method is carried out to link.
Above execution mode is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification, therefore all equivalent technical schemes also belong to protection category of the present invention.
Claims (1)
1. in an elastic exchange network based on the Resources re engineering method of sequence business remaining time, it is characterized in that, the left end former business being sequentially arranged in frequency spectrum according to the remaining time of order is from less to more sequentially arranged in the left end of frequency spectrum to right-hand member to right-hand member or by former business according to the order of remaining time from many to few;
Frequency gap resource shared by former business release, the frequency spectrum resource that the frequency gap resource of described former business release is adjacent forms continuous print frequency spectrum resource, the continuous print frequency spectrum resource of described composition is as the frequency spectrum resource of new business, and described former business takies the gap time frequently and can continue in time and be kept to 0;
When the left end that former business is sequentially arranged in frequency spectrum according to the remaining time of order is from less to more to right-hand member, the order that new business is arranged in frequency spectrum is, sorts according to the new business remaining time of mode from less to more; When the left end that former business is sequentially arranged in frequency spectrum according to the order of remaining time from many to few is to right-hand member, the order that new business is arranged in frequency spectrum is, sorts according to the new business mode of remaining time from many to few.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310185273.3A CN103312630B (en) | 2013-05-17 | 2013-05-17 | Based on the Resources re engineering method of business sequence remaining time in a kind of elastic exchange network |
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| CN201310185273.3A CN103312630B (en) | 2013-05-17 | 2013-05-17 | Based on the Resources re engineering method of business sequence remaining time in a kind of elastic exchange network |
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| CN103312630A CN103312630A (en) | 2013-09-18 |
| CN103312630B true CN103312630B (en) | 2016-01-20 |
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| CN104202112B (en) * | 2014-09-12 | 2017-04-19 | 西安电子科技大学 | Periodical aggregation optical path reconstruction method based on channel density and minimum clearance |
| CN106953710B (en) * | 2017-03-15 | 2018-07-20 | 重庆邮电大学 | The method for routing of the distribution of minimum cost frequency spectrum and fragment perception in elastic optical network |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7450604B2 (en) * | 2002-04-20 | 2008-11-11 | Conexant Systems, Inc. | Method and apparatus for establishing circuit connections over local area networks with frequency selective impairments |
| CN102420656A (en) * | 2011-11-22 | 2012-04-18 | 北京邮电大学 | Trigger method of frequency spectrum resource reconstruction in all-optical network and system thereof |
| CN102724113A (en) * | 2012-05-31 | 2012-10-10 | 北京邮电大学 | Method for reconstructing frequency slot resources |
| CN103051547A (en) * | 2012-12-24 | 2013-04-17 | 北京邮电大学 | Routing and spectrum resource allocation method and system for resource awareness in elastic optical path network |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9020350B2 (en) * | 2011-06-24 | 2015-04-28 | Techsys Insights | Optical spectrum recovery |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7450604B2 (en) * | 2002-04-20 | 2008-11-11 | Conexant Systems, Inc. | Method and apparatus for establishing circuit connections over local area networks with frequency selective impairments |
| CN102420656A (en) * | 2011-11-22 | 2012-04-18 | 北京邮电大学 | Trigger method of frequency spectrum resource reconstruction in all-optical network and system thereof |
| CN102724113A (en) * | 2012-05-31 | 2012-10-10 | 北京邮电大学 | Method for reconstructing frequency slot resources |
| CN103051547A (en) * | 2012-12-24 | 2013-04-17 | 北京邮电大学 | Routing and spectrum resource allocation method and system for resource awareness in elastic optical path network |
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