CN101610431A - The method for obligating resource of classifying based on business in a kind of optical-fiber network - Google Patents
The method for obligating resource of classifying based on business in a kind of optical-fiber network Download PDFInfo
- Publication number
- CN101610431A CN101610431A CNA2009100887565A CN200910088756A CN101610431A CN 101610431 A CN101610431 A CN 101610431A CN A2009100887565 A CNA2009100887565 A CN A2009100887565A CN 200910088756 A CN200910088756 A CN 200910088756A CN 101610431 A CN101610431 A CN 101610431A
- Authority
- CN
- China
- Prior art keywords
- wavelength
- resource
- alternative
- locking
- reserved
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
- Optical Communication System (AREA)
Abstract
The invention provides the method for obligating resource of classifying based on business in a kind of optical-fiber network.Described method for the different as far as possible wavelength resource scope of traffic assignments, is carried out resource reservation (locking) by determining alternative wavelength resource; After destination node had judged whether that wavelength is reserved, the signaling of carrying operation wavelength information was back to source node, discharged the operation wavelength wavelength resource that is reserved (locking) in addition simultaneously.Use method of the present invention and can avoid the obstruction of the follow-up connection request that causes owing to the redundant wavelength resource of forward direction RSVP locking; And when the destination node wavelength selected is carried out interconnection, avoid because the back does not lock any wavelength resource to RSVP, and the situation that causes this wavelength to be taken by other light path.The present invention reduces business block rate greatly, has improved the utilance of optical-fiber network medium wavelength resource simultaneously.
Description
Technical field
The present invention relates to ASON (ASON, Automatically Switched OpticalNetworks), wavelength switched optical network (WSON, Wavelength Switched Optical Networks) and wavelength division multiplexing (WDM, Wavelength Division Multiplexing) technical field such as is specifically related in a kind of optical-fiber network the realization based on the method for obligating resource of business classification.
Background technology
The distributed wavelength reservation schemes is used for connecting the Wavelength reservation and the configuration of the process of foundation, be a kind of be the novel wavelength route optical network controlling mechanism of one in conjunction with signaling control with wave length routing.Adopt this control mode can avoid the extra control expense of introducing because of the wavelength information distribution, increase the autgmentability of network control, be fit to be applied to wavelength route optical network fairly large or that the variation of wavelength availability information is frequent.Existing distributed wavelength reservation schemes can be divided into three kinds of fundamental types: forward direction reservation protocol (FRP, ForwardReservation Protocol), the back is to reservation protocol (BRP, Backward Reservation Protocol) and mix reservation protocol (HRP, Hybrid Reservation Protocol).FRP and BRP are the classical protocols that occurs the earliest, and mostly HRP is the mutation of FRP and BRP.
Fig. 1 is a FRP road construction process.As shown in Figure 1, in FRP, receive the request of connect setting up after, source node along given route downstream hop-by-hop send Path message to destination node.When receiving Path message, all it is handled each node on the route, do common factor with receiving wavelength set labelset and the long set of this node idler in the Path message, obtain idler eldest son collection, and subclass connects the one or more wavelength of temporary transient reservation (locking) to the link of next jumping for this in view of the above; If do not have wavelength available on next jumping link, just send a failure PathErr message to source node along opposite route, all wavelengths that will reserve (locking) simultaneously before all discharges; After arriving destination node, concentrate wavelength available of selection, and send Resv message to source node along opposite route final idler eldest son.
In the way that arrives source node, Resv message is carried out wavelength selected interconnection and is discharged other wavelength, and source node can begin to transmit data after receiving Resv message.
When two professional priorities of cross link are passed through cross links, last professional all idle wavelength of having reserved (locking), when a back business arrives, because previous business does not have in time to discharge the inoperative wavelength resource on the cross link, this just makes a back professional no idle wavelength to use, and produces connection request and blocks.Therefore, the shortcoming of FRP is to have locked redundant wavelength in the road construction process, thereby causes the obstruction of follow-up connection request easily.
Fig. 2 is a BRP road construction process.As shown in Figure 2, lock redundant wavelength but final and obsolete shortcoming a middle or short term in order to overcome forward direction reservation protocol road construction process, the back is suggested to the agreement of RSVP (BRP) as a kind of optimization.In BRP, source node is towards destination node hop-by-hop transmission downstream tentative messages (Prob), but not Path message.Prob message is only collected the wavelength state information on the path, does not lock any wavelength.After receiving Prob message, the wavelength that the destination node decision finally will be used sends Resv message to source node in the other direction along route wavelength selected is carried out interconnection (if this wavelength is also available).If unavailable at this wavelength of some intermediate node, then this node sends ResvErr message to destination node, sends Fail message to source node.Cross-coupled wavelength before ResvErr message discharges, Fail message informing source node connect sets up failure, and source node can begin to transmit data after receiving Resv message.
BRP is not reserve (locking) idle wavelength sending Prob message, and this just makes selected operation wavelength to be had another business of cross link to take in advance with this business, causes this business to be blocked.Because the process BRP of Prob does not lock wavelength, so the shortcoming of BRP is Resv message when the destination node wavelength selected is carried out interconnection, may find the situation that this wavelength has been taken by other light path.
The main target of HRP is to improve network performances such as blocking rate, and complexity is than higher, and it is bigger to implement difficulty in real network.At this situation, proposed to can be used in the large-scale wavelength route network simple fast distributed Wavelength reservation agreement (for example, the destination RSVP, DRP, DestinationResource Reservation Protocol) retry back and in the middle of the band to resource reservation scheme (BRP-IR, Backward Resource Reservation Protocol with Intermediate Re-try).But the former is to be that cost obtains short connection setup time and handles complexity to increase blocking rate, and the latter then can increase road construction time delay and signaling consumption.
Summary of the invention
The invention provides the method for obligating resource of classifying based on business in a kind of optical-fiber network, can avoid because FRP locks redundant wavelength resource, and the obstruction of the follow-up connection request that causes; Also avoided simultaneously when the destination node wavelength selected is carried out interconnection, may finding the situation that this wavelength has been taken by other light path because BRP does not lock any wavelength resource, the present invention greatly reduces the higher problem of service blocking rate.
For solving the problems of the technologies described above, it is as follows to the invention provides scheme:
Based on the method for obligating resource of business classification, in described optical-fiber network, the business of sending service request is classified in a kind of optical-fiber network, comprise and determine selected wavelength resource and selected operation wavelength;
Classification is divided into alternative wavelength resource and non-alternative wavelength resource with whole wavelength resources to source node according to business;
Source node sends Path message along shortest path to destination node, the intermediate node of receiving Path message is done common factor to reservation (locking) wavelength of Message Record and idle wavelength that next jumps link, and in alternative wavelength, reserve the wavelength resource of (locking) gained subclass, write down the idle wavelength information in the non-alternative wavelength simultaneously;
Described alternative wavelength resource is divided into fixing alternative wavelength resource and alternative at random wavelength resource.
Said method comprising the steps of:
A, classify, determine fixing alternative wave-length coverage and alternative at random wave-length coverage according to business;
B, Path message are reserved the idle wavelength resource in the alternative wave-length coverage, write down the wavelength state information in the non-alternative wave-length coverage simultaneously;
C, judge whether alternative wavelength resource is reserved, and destination node is selected to operation wavelength;
If the alternative wavelength resource of D is reserved, then selectes a wavelength that is reserved as operation wavelength, otherwise in non-alternative wavelength, determine one at random as operation wavelength;
E, the RESV that will carry operation wavelength information are back to source node, discharge the wavelength resource that is reserved (or locking) beyond the operation wavelength simultaneously.
Preferably, in the said method, in the described steps A,, the professional number of categories of setting (Sort_Num) is got remainder, determine professional classification by professional label (Label);
Preferably, in the said method, in the described steps A, fixing alternative wavelength resource is the difference according to class of service, from λ
1～λ
Sort_NumIn determine one, alternative at random wavelength then is to determine the N bar from the alternative wavelength of M bar on-fixed of remainder at random, the alternative wavelength resource of the common composition of fixing alternative wavelength and alternative at random wavelength;
Preferably, in the said method, among the described step B, in the alternative wavelength resource scope of determining, from the source node to the destination node, set out, to the reservation of all the idle wavelength in the alternative wavelength resource scope; Receive each node of Path message, wavelength resource information according to the reservation in the Path message (locking), can reserve the common factor of the wavelength resource of (locking) with next jumping in this node link adjacency matrix, reserve (locking) corresponding wavelength resource, write down the wavelength available resource information in the non-alternative wavelength resource scope simultaneously, but do not reserve the wavelength available resource information in (locking) non-alternative wavelength resource scope.
Preferably, in the said method, among described step C and the step D, described destination node is selected to operation wavelength, whether judge has the wavelength resource in the alternative wave-length coverage to be reserved (locking) in the Path message of receiving, if fixing alternative wavelength resource is reserved (locking), the fixing alternative wavelength that then will reserve (locking) is as operation wavelength;
If fixing alternative wavelength is not reserved (locking), and exists other alternative at random wavelength to be reserved (locking), then from the alternative at random wavelength that is reserved (locking), select a wavelength at random as operation wavelength;
If all wavelengths in the alternative wavelength resource scope all is not reserved (locking), promptly alternative wavelength resource is all unavailable, then the wavelength of free time, selects a wavelength as operation wavelength at random in the non-alternative wavelength resource scope of Path Message Record.
Preferably, in the said method, in the described step e, the described RESV that carries operation wavelength information that returns is back to source node, if operation wavelength from alternative wavelength resource, determine, then need to discharge other reservation (locking) but the wavelength resource that is not used; If operation wavelength is determined in non-alternative wavelength resource scope at random, except that the wavelength resource that discharges other reservation (locking) but be not used, return the road construction information of step C and give source node, the wavelength resource that has taken before discharging simultaneously.
From the above as can be seen, based on the method for obligating resource of business classification,,, carry out resource reservation (locking) in a kind of optical-fiber network provided by the invention for the different as far as possible wavelength resource scope of traffic assignments by determining alternative wavelength resource; After destination node had judged whether that wavelength is reserved, the signaling of carrying operation wavelength information was back to source node, discharged the operation wavelength wavelength resource that is reserved (locking) in addition simultaneously.By the business classification, compressed the scope of alternative wavelength resource; Simultaneously in conjunction with forward direction resource reservation and back to the resource reservation advantage, reduce the possibility that produces the resource contention conflict in the resource reservation process, have better resource utilization, lower service blocking rate and shorter road construction time delay.
Description of drawings
Fig. 1 is a FRP road construction process;
Fig. 2 is a BRP road construction process;
Fig. 3 is professional classification map figure;
Fig. 4 is that alternative wavelength resource is formed schematic diagram;
The signalling diagram of Fig. 5 for having alternative wavelength resource to use in the embodiment of the invention;
The signalling diagram that Fig. 6 can use for no alternative wavelength resource in the embodiment of the invention.
Embodiment
The present invention is directed to the problem of the business obstruction that brings to resource reservation (BRP) non-locking wavelength resource in forward direction resource reservation (FRP) redundant wavelength resource of locking and back, proposed the method for obligating resource in a kind of optical-fiber network based on the business classification.The present invention uses for reference the thought of hash table, by the business classification, has compressed the scope of alternative wavelength resource; Simultaneously in conjunction with forward direction resource reservation and back to the resource reservation advantage, reduce the possibility that produces the resource contention conflict in the resource reservation process, have better resource utilization, lower service blocking rate and shorter road construction time delay.
According to the method for obligating resource based on the business classification in a kind of optical-fiber network provided by the invention, source node will be classified to the business that arrives.Fig. 3 is professional classification map figure, and it has represented different business and a kind of thought of classification between the classification separately.
The thought of classification comes from hash table technology in the data structure lookup technology, and in fact the technology of searching is exactly to determine that key equals being recorded in of set-point and searches memory location in the structure.The general technology of searching can only compare by a series of set-point and key, and this class technology of searching all is to be based upon on the basis of comparison, and efficient is not high.The hash table technology is to find the mapping H (k) of set-point K when searching according to a definite corresponding relation, searches thereby finish, and efficient is higher.In fact, in the hash table technology, K is exactly a kind of concrete classification for searching, stores corresponding position into or in the location lookup of correspondence according to the difference of classification (K value).In like manner, traditional forward direction resource reservation is to adopt initial hit or the method for hitting at random to determine to use wavelength in all wavelength availables, and this is a kind of ataxonomic thought, exists randomness and contingency.And according to the hash table technology, the present invention adopts a kind of thought of classification, allows different professional correspondences choose different wavelength, has so just avoided resource contention
Professional classification is by professional label (Label) the professional number of categories of setting (Sort_Num) to be got remainder to determine.Fig. 4 is that alternative wavelength resource is formed schematic diagram, and it has represented the component relationship of alternative wavelength resource.Fixing alternative wavelength resource promptly according to the difference of class of service from λ
1～λ
Sort_NumIn determine one; Alternative at random wavelength then is to determine the N bar from the alternative wavelength of M bar on-fixed of remainder at random.
Source node sends Path message downstream according to the gained path.The common factor that each node of receiving Path message can be reserved (locking) wavelength resource according to next jumping in the reservation in the Path message (locking) wavelength resource information and this node link adjacency matrix is reserved (locking) wavelength resource accordingly.Write down the wavelength available resource information in the non-alternative wavelength resource scope simultaneously, but do not reserve the wavelength available resource information in (locking) non-alternative wavelength resource scope.
Whether destination node is to judge in the Path message of receiving to have the wavelength resource in the alternative wave-length coverage to be reserved (locking) to the selected of operation wavelength.
The signalling diagram of Fig. 5 for having alternative wavelength resource to use in the embodiment of the invention.As shown in Figure 5, in the present embodiment, all wavelength is totally 16, and business is divided into 4 classes, λ
1Be fixing alternative wavelength, λ
5, λ
7, λ
9, λ
11, λ
13And λ
15It is alternative at random wavelength resource.If fixing alternative wavelength resource λ
1Be reserved fixing alternative wavelength that (locking) then will reserve (locking) as operation wavelength; If fixing alternative wavelength X
1Be not reserved (locking) and exist other alternative at random wavelength to be reserved (locking), then from the alternative at random wavelength that is reserved (locking), select one at random as operation wavelength.
The RESV that carries operation wavelength information is back to source node, discharges other reservation (locking) but the wavelength resource that is not used.
The signalling diagram that Fig. 6 can use for no alternative wavelength resource in the embodiment of the invention.As shown in Figure 6, in the present embodiment,, then in the non-alternative wavelength resource scope of Path Message Record, select a wavelength X at random the available wavelength if all wavelengths in the alternative wavelength resource scope all is not reserved (locking)
6(or λ
8) as operation wavelength.
The RESV that carries operation wavelength information is back to source node, because be not reserved (locking) operation wavelength, if wavelength is when carrying out interconnection, this wavelength X
6Unoccupied, then continue to return RESV message, source node is received RESV message, shows the road construction success.If wavelength is when carrying out interconnection, this wavelength X
8Taken by other light path, then the dismounting of Fail message takes place and be reserved the wavelength resource of (locking) and announce source node road construction failure, the wavelength resource that has taken before discharging simultaneously to source node.
In resource reservation scheme based on the business classification, professional arrive destination node and when not having wavelength available, non-alternative wavelength resource according to the signaling record takies situation, hit an idle wavelength resource at random as assigned wavelength, and signaling is returned to the resource reservation scheme in the foundation back, so promptly inherit traditional back to resource reservation advantage efficiently, solved traditional back prolongs, has the professional problem that in resource contention, produces resource contention easily from cross link to the average road construction of resource reservation scheme again.
By foregoing description as can be seen, in the prior art, locked redundant wavelength in the FRP road construction process, thereby caused the obstruction of follow-up connection request easily.When the Resv reserving message is carried out interconnection to the destination node wavelength selected among the BRP, may find that this wavelength is taken by other light path, because the process BRP of Prob does not lock wavelength.The congestion situations of the business that these two kinds of extreme methods all are increases.
The reflected thought of hash table of the resource reservation scheme that proposes according to the present invention, professional classification based on the business classification.By the business classification, compressed the scope of alternative wavelength resource, reduced the possibility that produces the resource contention conflict in the resource reservation process.Simultaneously, in the process of signaling road construction, comprehensively adopted and reserved alternative wavelength resource and write down the method that non-alternative wavelength resource takies situation, in the signaling return course, whether can be used to decision according to alternative wavelength resource and adopt the forward direction resource reservation still to return signaling to resource reservation in the back.The present invention combines forward direction resource reservation and back to the resource reservation advantage, has better resource utilization, lower service blocking rate and shorter road construction time delay, and is more efficient based on the method for obligating resource of business classification, finish road construction fast.
The above only is embodiments of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
- In the optical-fiber network based on the method for obligating resource of business classification, it is characterized in that, the business of sending service request is classified, comprise and determine selected wavelength resource and selected operation wavelength.
- 2. the method for claim 1 is characterized in that, by professional label, the professional number of categories of setting is got remainder, determines professional classification.
- 3. the method for claim 1 is characterized in that, classification is divided into alternative wavelength resource and non-alternative wavelength resource with whole wavelength resources to source node according to business;Described alternative wavelength resource is divided into fixing alternative wavelength resource and alternative at random wavelength resource;Source node sends Path message along shortest path to destination node, the intermediate node of receiving Path message is done common factor to reservation (locking) wavelength of Message Record and idle wavelength that next jumps link, and in alternative wavelength, reserve the wavelength resource of (locking) gained subclass, write down the idle wavelength information in the non-alternative wavelength simultaneously.
- 4. the method for claim 1 may further comprise the steps:A, classify, determine fixing alternative wave-length coverage and alternative at random wave-length coverage according to business;B, Path message are reserved the idle wavelength resource in the alternative wave-length coverage, write down the wavelength state information in the non-alternative wave-length coverage simultaneously;C, judge whether alternative wavelength resource is reserved, and destination node is selected to operation wavelength;If the alternative wavelength resource of D is reserved, then selectes a wavelength that is reserved as operation wavelength, otherwise in non-alternative wavelength, determine one at random as operation wavelength;E, the signaling that will carry operation wavelength information are back to source node, discharge the wavelength resource that is reserved (or locking) beyond the operation wavelength simultaneously.
- 5. method as claimed in claim 3 is characterized in that, in the affiliated steps A, fixing alternative wavelength resource is the difference according to class of service, from λ 1～λ Sort_NumIn determine one, alternative at random wavelength then is to determine the N bar from the alternative wavelength of M bar on-fixed of remainder at random, the alternative wavelength resource of the common composition of fixing alternative wavelength and alternative at random wavelength.
- 6. method as claimed in claim 3 is characterized in that, among the affiliated step B, described Path message in the alternative wavelength resource scope of determining, is set out from the source node to the destination node, to the reservation of all the idle wavelength in the alternative wavelength resource scope;Receive each node of Path message, wavelength resource information according to the reservation in the Path message (locking), can reserve the common factor of the wavelength resource of (locking) with next jumping in this node link adjacency matrix, reserve (locking) corresponding wavelength resource, write down the wavelength available resource information in the non-alternative wavelength resource scope simultaneously, but do not reserve the wavelength available resource information in (locking) non-alternative wavelength resource scope.
- 7. method as claimed in claim 4, it is characterized in that, among described step C and the step D, described destination node is selected to operation wavelength, whether judge has the wavelength resource in the alternative wave-length coverage to be reserved (locking) in the Path message of receiving, if fixing alternative wavelength resource is reserved (locking), the fixing alternative wavelength that then will reserve (locking) is as operation wavelength;If fixing alternative wavelength is not reserved (locking), and exists other alternative at random wavelength to be reserved (locking), then from the alternative at random wavelength that is reserved (locking), select a wavelength at random as operation wavelength;If all wavelengths in the alternative wavelength resource scope all is not reserved (locking), promptly alternative wavelength resource is all unavailable, then the wavelength of free time, selects a wavelength as operation wavelength at random in the non-alternative wavelength resource scope of Path Message Record.
- 8. method as claimed in claim 4, it is characterized in that in the described step e, the described signaling of carrying operation wavelength information of returning is back to source node, if operation wavelength determines from alternative wavelength resource, then need to discharge other reservation (locking) but the wavelength resource that is not used; If operation wavelength is determined in non-alternative wavelength resource scope at random, except that the wavelength resource that discharges other reservation (locking) but be not used, return the road construction information of step C and give source node, the wavelength resource that has taken before discharging simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100887565A CN101610431A (en) | 2009-07-10 | 2009-07-10 | The method for obligating resource of classifying based on business in a kind of optical-fiber network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100887565A CN101610431A (en) | 2009-07-10 | 2009-07-10 | The method for obligating resource of classifying based on business in a kind of optical-fiber network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101610431A true CN101610431A (en) | 2009-12-23 |
Family
ID=41483969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100887565A Pending CN101610431A (en) | 2009-07-10 | 2009-07-10 | The method for obligating resource of classifying based on business in a kind of optical-fiber network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101610431A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102439997A (en) * | 2011-10-14 | 2012-05-02 | 华为技术有限公司 | Method, system and node device for building wavelength cross connection |
| CN102546435A (en) * | 2012-02-17 | 2012-07-04 | 中兴通讯股份有限公司 | Spectrum resource assignment method and device |
| CN102577430A (en) * | 2011-12-30 | 2012-07-11 | 华为技术有限公司 | Method, system and node equipment for establishing optical cross connection |
| CN103036812A (en) * | 2012-12-20 | 2013-04-10 | 中国联合网络通信集团有限公司 | Wavelength resource reservation method and optical network node |
| CN103888357A (en) * | 2014-03-07 | 2014-06-25 | 清华大学 | Moving source routing method of dynamic transport network |
| CN104009818A (en) * | 2011-10-14 | 2014-08-27 | 华为技术有限公司 | Method, system and node device for establishing wavelength cross connection |
| CN105491465A (en) * | 2015-12-10 | 2016-04-13 | 南京理工大学 | Distributed optical network wavelength assignment method based on relative link distance grading |
| WO2016206470A1 (en) * | 2015-06-26 | 2016-12-29 | 中兴通讯股份有限公司 | Automatically switched optical network resource control method, apparatus and computer readable storage medium |
-
2009
- 2009-07-10 CN CNA2009100887565A patent/CN101610431A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012149804A1 (en) * | 2011-10-14 | 2012-11-08 | 华为技术有限公司 | Method, system and node device for establishing wavelength cross-connect |
| CN102439997A (en) * | 2011-10-14 | 2012-05-02 | 华为技术有限公司 | Method, system and node device for building wavelength cross connection |
| CN104009818B (en) * | 2011-10-14 | 2017-02-01 | 华为技术有限公司 | Method, system and node device for establishing wavelength cross connection |
| CN102439997B (en) * | 2011-10-14 | 2014-07-09 | 华为技术有限公司 | Method, system and node device for building wavelength cross connection |
| CN104009818A (en) * | 2011-10-14 | 2014-08-27 | 华为技术有限公司 | Method, system and node device for establishing wavelength cross connection |
| CN102577430A (en) * | 2011-12-30 | 2012-07-11 | 华为技术有限公司 | Method, system and node equipment for establishing optical cross connection |
| WO2013097191A1 (en) * | 2011-12-30 | 2013-07-04 | 华为技术有限公司 | Method, system and node device for establishing optical cross connection |
| CN102577430B (en) * | 2011-12-30 | 2014-02-26 | 华为技术有限公司 | Method, system and node equipment for establishing optical cross connection |
| CN102546435B (en) * | 2012-02-17 | 2016-01-20 | 中兴通讯股份有限公司 | A kind of frequency spectrum resource allocation method and device |
| CN102546435A (en) * | 2012-02-17 | 2012-07-04 | 中兴通讯股份有限公司 | Spectrum resource assignment method and device |
| CN103036812A (en) * | 2012-12-20 | 2013-04-10 | 中国联合网络通信集团有限公司 | Wavelength resource reservation method and optical network node |
| CN103036812B (en) * | 2012-12-20 | 2016-02-03 | 中国联合网络通信集团有限公司 | Wavelength resource reservation method and optical network node |
| CN103888357A (en) * | 2014-03-07 | 2014-06-25 | 清华大学 | Moving source routing method of dynamic transport network |
| CN103888357B (en) * | 2014-03-07 | 2017-05-31 | 清华大学 | The mobile source routing method of dynamic transmission network |
| WO2016206470A1 (en) * | 2015-06-26 | 2016-12-29 | 中兴通讯股份有限公司 | Automatically switched optical network resource control method, apparatus and computer readable storage medium |
| CN106330503A (en) * | 2015-06-26 | 2017-01-11 | 中兴通讯股份有限公司 | Automatically switched optical network resource control method and device |
| CN105491465A (en) * | 2015-12-10 | 2016-04-13 | 南京理工大学 | Distributed optical network wavelength assignment method based on relative link distance grading |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101610431A (en) | The method for obligating resource of classifying based on business in a kind of optical-fiber network | |
| US7633938B2 (en) | Transfer system | |
| US7171124B2 (en) | Wavelength routing and switching mechanism for a photonic transport network | |
| KR100798018B1 (en) | Reservation protocol signaling extentions for optical switched networks | |
| EP2058986B1 (en) | A method for determining a routing path and a routing path determination unit | |
| US7289730B2 (en) | Optical path communication network, node, and optical path setup method | |
| CN101822003A (en) | Path management control method, path management control program, path management control device and path management control system | |
| CN101715151B (en) | Priority-based inter-domain resource reservation method | |
| CN102143066B (en) | Method for establishing label switching path, node device and system | |
| US8050560B2 (en) | Distributed resource sharing method using weighted sub-domain in GMPLS network | |
| CN101296178B (en) | Inter-domain flux engineering route computing method and route computing device | |
| CN100395991C (en) | End-to-end business automatic configurating and restoring method in ASON network | |
| CN101616054A (en) | A kind of bypass processing method, device and system and router | |
| US7233743B2 (en) | Lightpath segmentation system and method in a generalized multi-protocol label switching network | |
| CN103036812B (en) | Wavelength resource reservation method and optical network node | |
| CN101257455A (en) | Label pre-distributing mechanism based on T-MPLS grouping conveying network | |
| CN102348138B (en) | Collision avoidance wavelength assignment method based on PCE (Personal Computer Equipment) | |
| CN101662422B (en) | Multi-layer network connection establishment method, node equipment and multi-layer network system | |
| Nandi et al. | A new contention avoidance scheme in optical burst switch network | |
| US7289450B2 (en) | Flood signaling architecture and process for provisioning communication paths | |
| Giorgetti et al. | Reservation collision avoidance in GMPLS wavelength-routed optical networks | |
| Ghimire et al. | Adaptive wavelength allocation in GMPLS controlled optical network | |
| CN101431701A (en) | Modularization implementing method for T-MPLS control plane | |
| US20060050725A1 (en) | Least used channel wavelength scheduling in APSON | |
| KR20040028331A (en) | Method for selecting a new Label Switching Path on MPLS network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20091223 |