CN101621451B - Method, node and system for bearing service - Google Patents
Method, node and system for bearing service Download PDFInfo
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- CN101621451B CN101621451B CN2008100682344A CN200810068234A CN101621451B CN 101621451 B CN101621451 B CN 101621451B CN 2008100682344 A CN2008100682344 A CN 2008100682344A CN 200810068234 A CN200810068234 A CN 200810068234A CN 101621451 B CN101621451 B CN 101621451B
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Abstract
The embodiment of the invention discloses a method, a node and a system for bearing a service. The method comprises the following steps: receiving a superior service request and calculating the needed route path of a requested superior service; judging whether the bandwidth occupied by a service that a route path segment in which no other service is transmitted up and down of the route path needs to bear is greater than a preset threshold but smaller than or equal to a bandwidth that a wavelength can bear; and if so, using a direct optical path to bear the superior service in the route path segment in which no other service is transmitted up and down of the route path to dynamically adjust a multilayer network in real time, reduce photoelectric conversion amount, improve the utilization rate of network resources and reduce operation cost.
Description
Technical field
The present invention relates to the communications field, particularly a kind of method of bearer service, node and system.
Background technology
Present network generally is composited by many levels.These levels are realized (PSC (packet switch capability for example by different techniques respectively; The packet switch level); TDM (Time Division Multiplexing, time division multiplexing level), or LSC (Lambda Switch Capable; Wavelength exchange level) etc., the exchange granularity of each level is different.In such multitiered network; Identical flow exchanges transfer ratio at the level of coarsegrain, and to exchange cost at the level than small grain size lower; For example the two-tier network of IP+WDM is an example, and same traffic is directly with the WDM link transmission is more much lower than pure IP forwarding cost end to end.
Thereby comprehensive the whole network resource is considered, the target that the maximization that reaches network resource usage and cost are reduced seems particularly important, how to confirm just which level when flow should transmit at.
And prior art is under the not enough situation of upper strata resource; Through an independent or distributed assembly; PCE (path computation element, path-calculating element) for example, dynamic driving lower floor carries out the LSP of lower floor (label switch path; Label switched path) sets up, use to offer the upper strata.
In realizing process of the present invention, the inventor finds that there is following problem at least in prior art:
Just drive lower floor when resource is not enough on the upper strata and carry out the resource adjustment, can not reach the highest of resource utilization.
Summary of the invention
The embodiment of the invention provides a kind of method, node and system of bearer service, can improve utilization rate of network resource and cut operating costs.
The method of a kind of bearer service that the embodiment of the invention provides comprises:
After receiving the upper-layer service request, the path that the upper-layer service of computation requests need be passed through;
According to the Internet resources topology, judge that other professional route segments up and down of nothing in said path need the shared bandwidth of loaded service, the bandwidth that whether can carry smaller or equal to a wavelength greater than the threshold value of a setting;
Be then on other professional route segments up and down of nothing in said path, to utilize direct optical path to carry said upper-layer service;
When having business on other professional route segments up and down of nothing in said path; Saidly utilize direct optical path to carry said upper-layer service to be specially: if carry the light path of said existing business is the segmentation light path; Then said segmentation light path is spliced into direct optical path and carries said upper-layer service and said existing business; If carrying the light path of said existing business is direct optical path, then utilize said direct optical path to carry said upper-layer service and said existing business;
When not having business on other professional route segments up and down of the nothing in said path, saidly utilize direct optical path to carry said upper-layer service to be specially: set up direct optical path and carry said upper-layer service.
A kind of node that the embodiment of the invention provides comprises:
Receiving element is used to receive the upper-layer service request;
Computing unit is used for the path that the upper-layer service of computation requests need be passed through;
Judging unit is used for according to the Internet resources topology, judges that other professional route segments up and down of nothing in said path need the shared bandwidth of loaded service, the bandwidth that whether can carry smaller or equal to a wavelength greater than the threshold value of a setting;
The decision unit, be used for when the judged result of said judging unit when being, decision utilizes direct optical path to carry said upper-layer service on the route segments about other business of nothing in said path;
Existing professional on other professional route segments up and down of nothing in said path; And when the light path of carrying said existing business was the segmentation light path, said decision unit was used to specifically determine that on other professional route segments up and down of nothing in said path, said segmentation light path being spliced into direct optical path carries said upper-layer service and said existing business;
Existing professional on other professional route segments up and down of nothing in said path; And when the light path of carrying said existing business was direct optical path, said decision unit specifically was used to determine on other professional route segments up and down of nothing in said path, to utilize said direct optical path to carry said upper-layer service and said existing business;
When not having business on other professional route segments up and down of nothing in said path, said decision unit is used to specifically determine that on other professional route segments up and down of nothing in said path, setting up direct optical path carries said upper-layer service.
The system of a kind of bearer service that the embodiment of the invention provides comprises: first node,
Said first node comprises:
Receiving element is used to receive the upper-layer service request;
Computing unit is used for the path that the upper-layer service of computation requests need be passed through;
Judging unit is used for according to the Internet resources topology, judges that other professional route segments up and down of nothing in said path need the shared bandwidth of loaded service, the bandwidth that whether can carry smaller or equal to a wavelength greater than the threshold value of a setting;
The decision unit, be used for when the judged result of said judging unit when being, decision utilizes direct optical path to carry said upper-layer service on the route segments about other business of nothing in said path;
Existing professional on other professional route segments up and down of nothing in said path; And when the light path of carrying said existing business was the segmentation light path, said decision unit was used to specifically determine that on other professional route segments up and down of nothing in said path, said segmentation light path being spliced into direct optical path carries said upper-layer service and said existing business;
Existing professional on other professional route segments up and down of nothing in said path; And when the light path of carrying said existing business was direct optical path, said decision unit specifically was used to determine on other professional route segments up and down of nothing in said path, to utilize said direct optical path to carry said upper-layer service and said existing business;
When not having business on other professional route segments up and down of nothing in said path, said decision unit is used to specifically determine that on other professional route segments up and down of nothing in said path, setting up direct optical path carries said upper-layer service;
Notification unit is used for the determination result of said decision unit is notified to the intermediate node on other professional route segments up and down of nothing in said path;
Said system also comprises the intermediate node on other professional route segments up and down of nothing in said path;
Intermediate node on other professional route segments up and down of the nothing in said path is used for after receiving the notice of said first node, utilizes direct optical path to carry said upper-layer service.
The method of a kind of bearer service that the embodiment of the invention provides, node and system, can be real-time multitiered network be dynamically adjusted reduces the quantity of opto-electronic conversion, improves utilization rate of network resource and cuts operating costs.
Description of drawings
Fig. 1 is the flow chart of the method for a kind of bearer service of providing of one embodiment of the invention;
Fig. 2 is the service path sketch map that one embodiment of the invention provides;
Fig. 3 is the service path sketch map that another embodiment of the present invention provides;
Fig. 4 is the network environment sketch map that one embodiment of the invention provides;
Fig. 5 is the adjusted network environment sketch map that one embodiment of the invention provides;
Fig. 6 is the Internet resources topological diagram that one embodiment of the invention provides;
Fig. 7 is the sketch map of the carrying LSP1 that provides of the embodiment of the invention, LSP2, LSP3;
Fig. 8 is the carrying LSP4 that provides of the embodiment of the invention, the sketch map of LSP5;
Fig. 9 is the sketch map of a kind of node of providing of one embodiment of the invention;
Figure 10 is the sketch map of a kind of node of providing of another embodiment of the present invention;
Figure 11 is the sketch map of a kind of node of providing of another embodiment of the present invention.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, embodiment of the present invention is done to describe in detail further below in conjunction with accompanying drawing.
As shown in Figure 1, the flow chart of the method for a kind of bearer service that provides for one embodiment of the invention, said method comprises:
After receiving the upper-layer service request, the path that the upper-layer service of computation requests need be passed through;
According to the Internet resources topology, judge that other professional route segments up and down of nothing in said path need the shared bandwidth of loaded service, the bandwidth that whether can carry smaller or equal to a wavelength greater than the threshold value of a setting;
Be then on other professional route segments up and down of nothing in said path, to utilize direct optical path to carry said upper-layer service.
In the embodiment of the invention, when existing when professional on other professional route segments up and down of the nothing in said path, the said shared bandwidth of loaded service that needs is the bandwidth sum that said upper-layer service request bandwidth that need take and said existing business take; When not having business on other professional route segments up and down of nothing in said path, the said shared bandwidth of loaded service that needs is the bandwidth that said upper-layer service request need take.
The method of a kind of bearer service that another embodiment of the present invention provides; Wherein, When having business on other professional route segments up and down of nothing in said path; Saidly utilize direct optical path to carry said upper-layer service to be specially: if carry the light path of said existing business is the segmentation light path; Then said segmentation light path being spliced into direct optical path and carrying said upper-layer service and said existing business, is direct optical path if carry the light path of said existing business, then utilizes said direct optical path to carry said upper-layer service and said existing business;
When not having business on other professional route segments up and down of the nothing in said path, saidly utilize direct optical path to carry said upper-layer service to be specially: set up direct optical path and carry said upper-layer service.
The method of a kind of bearer service that another embodiment of the present invention provides; Wherein, saidly said segmentation light path is spliced into direct optical path carries said upper-layer service and said existing business is specially: the switching node between the said segmentation light path becomes and carries out full light exchange by carrying out the conversion of photoelectricity light.
The method of a kind of bearer service that another embodiment of the present invention provides, wherein, said Internet resources topology is by node the link information that changes to be carried out inundation in network to form.
The method of a kind of bearer service that another embodiment of the present invention provides; Wherein, described link information comprises: light exchange link information, opto-electronic conversion link information, electric light transfer link information, transmission link information, light path link information, electric laminar flow amount information.
As shown in Figure 2; Suppose that the path that the upper-layer service of request need be passed through is A-B-C-D-E-F-G; And supposition is about other business of nothing on this path; Promptly other professional route segments up and down of the nothing in this path are the complete trails in this path, then on other professional route segments up and down of nothing in this path, promptly on the complete trails in this path, utilize direct optical path to carry said upper-layer service;
As shown in Figure 3; Suppose that the path that the upper-layer service of request need be passed through is A-B-C-D-E-F-G; And supposition is about Node B and other business of node D existence; Promptly other professional route segments up and down of the nothing in this path are meant: first of this route segment and/or last node have about other business, and comprise a route segment that does not have other professional intermediate nodes up and down at least, are B-C-D part route segment and D-E-F-G part route segment; Then on other professional route segments up and down of nothing in this path, promptly on the B-C-D in this path part route segment and D-E-F-G part route segment, utilize direct optical path to carry said upper-layer service respectively.
The method of a kind of bearer service that the embodiment of the invention provides can be real-time multitiered network is dynamically adjusted, reduce the quantity of opto-electronic conversion, improve utilization rate of network resource and cut operating costs.
As shown in Figure 4, be the network environment sketch map that one embodiment of the invention provides, in this multitiered network, the existing smooth exchange capacity of each node has electric exchange capacity again.During beginning, node A receives a less upper-layer service request (first node is A, and end-node is E) of capacity end to end; The embodiment of the invention is electric layer service request; Such as the IP flow can certainly be other upper-layer service requests, and the embodiment of the invention does not limit this.The path that node A calculates the upper-layer service process of this request is A-B-C-D-E; Because this volume of business is less,, do not utilize direct optical path to carry so light path is not monopolized; Promptly do not carry out OOO exchange (all-optical switching at switching node B, D place; Full light exchange), but carries, at B by three sections light paths; D does at the place OEO conversion (conversion of Optical-Electrical-Optical photoelectricity light), and these light path resources can be used by other upper-layer service requests respectively like this.Do the OEO conversion as for why not at node C, the photoelectricity light tts resource that reason is node C is not enough, so can only carry out the OOO exchange.
But when the service traffics on upper strata change, still for example with the flow between A-E, if judge the capacity that has reached near taking a light path bandwidth (i.e. bandwidth that wavelength can carry), for example 90% of the light path bandwidth.And the threshold value that this light path is set is 80% of a light path bandwidth, at this moment, and the bandwidth that the bandwidth that the business on upper strata need take can be carried smaller or equal to a wavelength greater than this threshold value.Because the flow of same capability; Lower floor's transmission (is changed without OEO; Directly carry out OOO exchange) cost lower than the cost of upper strata transmission (needing conversion) through OEO, just the cost of OOO is lower than the cost of OEO in this case, so uses OOO as much as possible replaces OEO to change.
Suppose wavelength between the D '-E ' upper-layer service that also to have carried other non-A-E simultaneously be sourcesink; Promptly suppose about other business of node D existence; Other professional route segments up and down of the nothing in the path that the upper-layer service of this request need be passed through need be through A '-D ' the part route segment in path for the upper-layer service of this request; Then use the end-to-end wavelength LSP (label switch path, label switched path) of A '-D ' part route segment replace two sections original LSP (A '-B ', B '-D '); Promptly between other professional A '-D ' up and down of nothing, utilize direct optical path to come bearer service, adjusted network environment sketch map is as shown in Figure 5.
And if the wavelength between D '-E ' does not carry other business simultaneously; Do not exist other professional about; Other professional route segments up and down of the nothing in the path that the upper-layer service of i.e. this request need be passed through need be through the A '-E ' complete trails in path for the upper-layer service of this request; Then can directly set up the LSP of wavelength end to end of A '-E ' complete trails, utilize this direct optical path to come bearer service.
For bandwidth how to judge in the embodiment of the invention that bandwidth that upper-layer service need take can be carried smaller or equal to a wavelength greater than the threshold value set, the embodiment of the invention is judged through the Internet resources topology that the link information according to the node inundation forms.Specifically can be through expansion IGP agreement (interior gateway protocol; Interior Gateway Protocol); Several kinds of link information TLV (Type below the increase; Length and Value type, length and codomain) sub-TLV, other nodes that the following link information of each multilayer switching node is flooded in the network form Internet resources topology:
The light exchange sub-TLV of link information (just this node has the exchange capacity of which wavelength);
The sub-TLV of opto-electronic conversion link information (information of description transceiver, what indicate which wavelength can followingly arrive the electricity layer, bandwidth is how much);
The sub-TLV of electric light transfer link information (describe the information of transceiver, indicating electric layer service can be above to which wavelength, and bandwidth how much);
The sub-TLV of transmission link information (which wavelength every link all supports);
The sub-TLV of light path link information (information of light path, just the information of photosphere LSP comprises information such as first end-node and wavelength attribute);
Electricity laminar flow amount information sub-TLV (information of electricity layer LSP comprises the information of the photosphere LSP that carries it).
Behind network convergence, each node all generates the as shown in Figure 6 one network resource topology figure that throws the net.
Link information with the C node is an example:
Light exchange link information: have λ 1, λ 2 exchange capacities;
Opto-electronic conversion link information: λ 1, λ 2 can descend electric layer service, and bandwidth is respectively bandwidth 1, and bandwidth 2;
Electric light transfer link information: electric layer service can be gone up λ 1, and λ 2, and bandwidth is respectively bandwidth3, and bandwidth 4;
Transmission link information: C-A, C-B, C-D, the link between C-E is supported wavelength X 1, λ 2;
Light path link information: all photosphere LSP information of node headed by the C node;
Electricity laminar flow amount information: all electricity layer LSP information of node headed by the C node, the photosphere LSP sign of carrying.
When the service traffics on the upper strata changed like this, the first node of each upper-layer service request just can judge that the utilance of how to carry out levels resource allocation network is the highest.
Also can be in the embodiment of the invention by the device that is provided with separately, a certain node in a separate server or the network for example carries out the arbitration functions of above-mentioned each node; Promptly this device also participate in the link information in the network inundation to form the Internet resources topology; When certain node, when receiving the service request of upper layer network, this solicited message is sent to this device such as node A; After this device receives this solicited message, the path that the upper-layer service of computation requests need be passed through; And, judge that other professional route segments up and down of nothing in said path need the shared bandwidth of loaded service, the bandwidth that whether can carry smaller or equal to a wavelength greater than the threshold value of a setting according to the Internet resources topology; Be then to determine on other professional route segments up and down of nothing in said path, to utilize direct optical path to carry said upper-layer service; And said determination result notified to the node in the network; And said notice can be issued node A; Be transmitted to the node in the network by node A, can directly issue the node in the network by said device yet, the present invention does not limit this.
The method of a kind of bearer service that another embodiment of the present invention provides, as follows:
At first, node A receives LSP1 (first node is A, and end-node the is D) service request of a little bandwidth; The path that node A calculates the business process of this request is A-C-D, thus the decision segmentation set up two light paths (A-C, C-D); Carry out the OEO conversion at switching node C, suppose all to use λ 1 to carry, the corresponding link resource is taken; Node C in the node A informing network accomplishes segmentation and sets up two light paths;
Subsequently, Node B receives LSP2 (first node is B, and end-node the is D) service request of big bandwidth again; The path that Node B calculates the business process of this request is B-C-D, and Node B judges that based on the Internet resources topology of the link information formation of each node inundation the bandwidth of LSP2 adds the bandwidth of the bandwidth of LSP1 greater than λ 1; So can not and the shared C-D of LSP1 between λ 1, at this moment determine segmentation to set up two light paths (B-C, C-D equally; Suppose all to use λ 2) carry; The corresponding link resource is taken, and the node C in the Node B informing network accomplishes segmentation and sets up two light paths;
If at this moment Node B receives the LSP3 of a big bandwidth again (first node is B; End-node is E) service request; The path that Node B calculates the business process of this request is B-C-E, and Node B is according to the Internet resources topology that the link information of each node inundation forms, and judges that this bandwidth can take basically or near taking a wavelength; Promptly greater than one set threshold value (such as bandwidth 80%) and the bandwidth that can carry smaller or equal to a wavelength; Decision directly set up one end to end direct optical path (B-E, use λ 1) carry, this light path is directly carried out the wavelength exchange and need do not carried out opto-electronic conversion at the C node; Node C in the Node B informing network accomplishes and sets up a direct optical path end to end;
As shown in Figure 7, the sketch map of the carrying LSP1 that provides for the embodiment of the invention, LSP2, LSP3;
If at this moment node A receives LSP4 (first node is A, and end-node the is D) service request of a little bandwidth again, the path that node A calculates the business process of this request is A-C-D; Node A is according to the Internet resources topology that the link information of each node inundation forms, judge this bandwidth add the bandwidth of existing LSP1 can take basically a λ 1 (surpass above-mentioned threshold value 80%, but smaller or equal to λ 1) then decision with existing two light path (A-C; C-D, λ 1), direct splicing becomes a direct optical path carrying LSP4 and an existing LSP1 end to end; Just this light path is become by the OEO conversion at the C node and directly carry out full light exchange; And not newly-built light path does not only consume the bandwidth of another light path, and need not consume the opto-electronic conversion link; The resource of electric light transfer link; And reduce the required sky high cost of OEO conversion, this light path of node A notice node C is become by the OEO conversion at the C node and directly carries out full light exchange, accomplishes existing two light path (A-C; C-D, λ 1) direct splicing become one end to end direct optical path carry LSP4 and existing LSP1; Certainly the embodiment of the invention also can be used to carry LSP4 and existing LSP1 by a newly-built direct optical path, and will carry the light path release of LSP1 originally, and the present invention does not limit this;
And if at this moment Node B receives the LSP5 of a little bandwidth again (first node is B; End-node is E) service request; The path that Node B calculates the business process of this request is B-C-E; Node B is based on the Internet resources topology that the link information of each node inundation forms, and judges that this bandwidth adds that the bandwidth of existing LSP3 on this path still satisfies greater than the threshold value of setting smaller or equal to a λ 1, and then decision is with carrying LSP5 of the direct optical path between the B-E that has set up and existing LSP3;
As shown in Figure 8, the carrying LSP4 that provides for the embodiment of the invention, the sketch map of LSP5.
The method of a kind of bearer service that the embodiment of the invention provides can be real-time multitiered network is dynamically adjusted, reduce the quantity of opto-electronic conversion, improve utilization rate of network resource and cut operating costs.
As shown in Figure 9, a kind of node for one embodiment of the invention provides comprises:
Receiving element is used to receive the upper-layer service request;
Computing unit is used for the path that the upper-layer service of computation requests need be passed through;
Judging unit is used for according to the Internet resources topology, judges on other professional route segments up and down of nothing in said path the bandwidth that needs the shared bandwidth of loaded service whether can carry smaller or equal to a wavelength greater than the threshold value of a setting;
The decision unit, be used for when the judged result of said judging unit when being, decision utilizes direct optical path to carry said upper-layer service on the route segments about other business of nothing in said path.
Contents such as concrete processing between above-mentioned each unit, implementation and since with the inventive method embodiment based on same conception, can repeat no more referring to the narration among the inventive method embodiment here.
A kind of node that another embodiment of the present invention provides; Wherein, Existing professional on other professional route segments up and down of nothing in said path; And when the light path of carrying said existing business was the segmentation light path, said decision unit was used to specifically determine that on other professional route segments up and down of nothing in said path, said segmentation light path being spliced into direct optical path carries said upper-layer service and said existing business;
Existing professional on other professional route segments up and down of nothing in said path; And when the light path of carrying said existing business was direct optical path, said decision unit specifically was used to determine on other professional route segments up and down of nothing in said path, to utilize said direct optical path to carry said upper-layer service and said existing business;
When not having business on other professional route segments up and down of nothing in said path, said decision unit is used to specifically determine that on other professional route segments up and down of nothing in said path, setting up direct optical path carries said upper-layer service.
Shown in figure 10, be a kind of node that another embodiment of the present invention provides, wherein, said node also comprises notification unit, is used for the determination result of said decision unit is notified to the node on other professional route segments up and down of nothing in said path.
Shown in figure 11, be a kind of node that another embodiment of the present invention provides, wherein, said node also comprises:
The inundation unit is used at network inundation link information to form said Internet resources topology;
Memory cell is used to store said Internet resources topology.
Wherein, described link information comprises: light exchange link information, opto-electronic conversion link information, electric light transfer link information, transmission link information, light path link information, electric laminar flow amount information.
Contents such as concrete processing between above-mentioned each unit, implementation and since with the inventive method embodiment based on same conception, can repeat no more referring to the narration among the inventive method embodiment here.
Node in the embodiment of the invention also can be an independent device that is provided with; A separate server for example, this device are also participated in the inundation of the link information in the network to form the Internet resources topology, when certain node; When receiving the service request of upper layer network such as node A; This solicited message is sent to this device, after this device receives this solicited message, the path that the upper-layer service of computation requests need be passed through; And according to Internet resources topologys, whether other professional route segments up and down of nothing of judging said path need the shared bandwidth of loaded service greater than the threshold value set, and the bandwidth that can carry smaller or equal to a wavelength; Be then to determine on other professional route segments up and down of nothing in said path, to utilize direct optical path to carry said upper-layer service; And said determination result notified to the node in the network; And said notice can be issued node A; Be transmitted to the node in the network by node A, can directly issue the node in the network by said device yet, the present invention does not limit this.
A kind of node that the embodiment of the invention provides, can be real-time multitiered network be dynamically adjusted reduces the quantity of opto-electronic conversion, improves utilization rate of network resource and cuts operating costs.
A kind of system that the embodiment of the invention provides comprises first node,
Said first node, be used to receive the upper-layer service request after, the path that the upper-layer service of computation requests need be passed through; And be used for according to the Internet resources topology, judge that other professional route segments up and down of nothing in said path need the shared bandwidth of loaded service, the bandwidth that whether can carry smaller or equal to a wavelength greater than the threshold value of a setting; Be then also to be used to determine on other professional route segments up and down of nothing in said path, to utilize direct optical path to carry said upper-layer service.
A kind of system that another embodiment of the present invention provides, said first node also is used to notify the intermediate node on other professional route segments up and down of nothing in said path to utilize direct optical path to carry said upper-layer service;
Intermediate node on other professional route segments up and down of the nothing in said path is used for after receiving the notice of said first node, utilizes direct optical path to carry said upper-layer service.
A kind of system that another embodiment of the present invention provides; Existing professional on other professional route segments up and down of nothing in said path; And when the light path of carrying said existing business is the segmentation light path; Intermediate node on other professional route segments up and down of the nothing in said path specifically is used on other professional route segments up and down of nothing in said path, said segmentation light path being spliced into direct optical path and carries said upper-layer service and said existing business;
Existing professional on other professional route segments up and down of nothing in said path; And when the light path of carrying said existing business is direct optical path; Intermediate node on other professional route segments up and down of the nothing in said path specifically is used on other professional route segments up and down of nothing in said path, utilizing said direct optical path to carry said upper-layer service and said existing business;
When not having business on other professional route segments up and down of nothing in said path; Intermediate node on other professional route segments up and down of the nothing in said path specifically is used on other professional route segments up and down of nothing in said path, setting up direct optical path and carries said upper-layer service.
A kind of system that another embodiment of the present invention provides, the intermediate node on other professional route segments up and down of the nothing in said path specifically is used to carry out full light exchange.
Contents such as concrete processing between above-mentioned each node, implementation and since with the inventive method embodiment based on same conception, can repeat no more referring to the narration among the inventive method embodiment here.
A kind of system that the embodiment of the invention provides, can be real-time multitiered network be dynamically adjusted reduces the quantity of opto-electronic conversion, improves utilization rate of network resource and cuts operating costs.
A kind of node that the embodiment of the invention provides comprises:
Receiving element is used to receive the notice that lets said node utilize direct optical path carrying upper-layer service;
Crosspoint, be used to receive said notice after, carry out the exchange of full light.
Contents such as concrete processing between above-mentioned each unit, implementation and since with the inventive method embodiment based on same conception, can repeat no more referring to the narration among the inventive method embodiment here.
A kind of node that the embodiment of the invention provides, can be real-time multitiered network be dynamically adjusted reduces the quantity of opto-electronic conversion, improves utilization rate of network resource and cuts operating costs.
All or part of content in the technical scheme that above embodiment provides can realize that through software programming its software program is stored in the storage medium that can read, storage medium for example: the hard disk in the computer, CD or floppy disk.
More than be merely preferred embodiment of the present invention, or not all within spirit of the present invention and principle in order to restriction the present invention, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the method for a bearer service is characterized in that, said method comprises:
After receiving the upper-layer service request, the path that the upper-layer service of computation requests need be passed through;
According to the Internet resources topology, judge that other professional route segments up and down of nothing in said path need the shared bandwidth of loaded service, the bandwidth that whether can carry smaller or equal to a wavelength greater than the threshold value of a setting;
Be then on other professional route segments up and down of nothing in said path, to utilize direct optical path to carry said upper-layer service;
When having business on other professional route segments up and down of nothing in said path; Saidly utilize direct optical path to carry said upper-layer service to be specially: if carry the light path of said existing business is the segmentation light path; Then said segmentation light path is spliced into direct optical path and carries said upper-layer service and said existing business; If carrying the light path of said existing business is direct optical path, then utilize said direct optical path to carry said upper-layer service and said existing business;
When not having business on other professional route segments up and down of the nothing in said path, saidly utilize direct optical path to carry said upper-layer service to be specially: set up direct optical path and carry said upper-layer service.
2. the method for claim 1; It is characterized in that, saidly said segmentation light path is spliced into direct optical path carries said upper-layer service and said existing business is specially: the switching node between the said segmentation light path becomes and carries out full light exchange by carrying out the conversion of photoelectricity light.
3. the method for claim 1 is characterized in that, said Internet resources topology is by node the link information that changes to be carried out inundation in network to form.
4. method as claimed in claim 3 is characterized in that, described link information comprises: light exchange link information, opto-electronic conversion link information, electric light transfer link information, transmission link information, light path link information, electric laminar flow amount information.
5. a node is characterized in that, comprising:
Receiving element is used to receive the upper-layer service request;
Computing unit is used for the path that the upper-layer service of computation requests need be passed through;
Judging unit is used for according to the Internet resources topology, judges that other professional route segments up and down of nothing in said path need the shared bandwidth of loaded service, the bandwidth that whether can carry smaller or equal to a wavelength greater than the threshold value of a setting;
The decision unit, be used for when the judged result of said judging unit when being, decision utilizes direct optical path to carry said upper-layer service on the route segments about other business of nothing in said path;
Existing professional on other professional route segments up and down of nothing in said path; And when the light path of carrying said existing business was the segmentation light path, said decision unit was used to specifically determine that on other professional route segments up and down of nothing in said path, said segmentation light path being spliced into direct optical path carries said upper-layer service and said existing business;
Existing professional on other professional route segments up and down of nothing in said path; And when the light path of carrying said existing business was direct optical path, said decision unit specifically was used to determine on other professional route segments up and down of nothing in said path, to utilize said direct optical path to carry said upper-layer service and said existing business;
When not having business on other professional route segments up and down of nothing in said path, said decision unit is used to specifically determine that on other professional route segments up and down of nothing in said path, setting up direct optical path carries said upper-layer service.
6. node as claimed in claim 5 is characterized in that,
Said node also comprises notification unit, is used for the determination result of said decision unit is notified to the node on other professional route segments up and down of nothing in said path.
7. node as claimed in claim 5 is characterized in that, said node also comprises:
The inundation unit is used at network inundation link information to form said Internet resources topology;
Memory cell is used to store said Internet resources topology.
8. node as claimed in claim 7 is characterized in that, described link information comprises: light exchange link information, opto-electronic conversion link information, electric light transfer link information, transmission link information, light path link information, electric laminar flow amount information.
9. the system of a bearer service comprises first node, it is characterized in that,
Said first node comprises:
Receiving element is used to receive the upper-layer service request;
Computing unit is used for the path that the upper-layer service of computation requests need be passed through;
Judging unit is used for according to the Internet resources topology, judges that other professional route segments up and down of nothing in said path need the shared bandwidth of loaded service, the bandwidth that whether can carry smaller or equal to a wavelength greater than the threshold value of a setting;
The decision unit, be used for when the judged result of said judging unit when being, decision utilizes direct optical path to carry said upper-layer service on the route segments about other business of nothing in said path;
Existing professional on other professional route segments up and down of nothing in said path; And when the light path of carrying said existing business was the segmentation light path, said decision unit was used to specifically determine that on other professional route segments up and down of nothing in said path, said segmentation light path being spliced into direct optical path carries said upper-layer service and said existing business;
Existing professional on other professional route segments up and down of nothing in said path; And when the light path of carrying said existing business was direct optical path, said decision unit specifically was used to determine on other professional route segments up and down of nothing in said path, to utilize said direct optical path to carry said upper-layer service and said existing business;
When not having business on other professional route segments up and down of nothing in said path, said decision unit is used to specifically determine that on other professional route segments up and down of nothing in said path, setting up direct optical path carries said upper-layer service;
Notification unit is used for the determination result of said decision unit is notified to the intermediate node on other professional route segments up and down of nothing in said path;
Said system also comprises the intermediate node on other professional route segments up and down of nothing in said path;
Intermediate node on other professional route segments up and down of the nothing in said path is used for after receiving the notice of said first node, utilizes direct optical path to carry said upper-layer service.
10. system as claimed in claim 9 is characterized in that, the intermediate node on other professional route segments up and down of the nothing in said path specifically is used to carry out full light exchange.
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| CN2008100682344A CN101621451B (en) | 2008-06-30 | 2008-06-30 | Method, node and system for bearing service |
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| CN101621451B true CN101621451B (en) | 2012-01-11 |
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| CN102325070B (en) * | 2011-07-15 | 2014-11-05 | 华为技术有限公司 | Service grooming method and device |
| CN103986670B (en) * | 2014-04-24 | 2017-11-21 | 电子科技大学 | A kind of acquisition methods of smooth exchange chip performance |
| CN106716935B (en) * | 2015-08-11 | 2020-01-31 | 华为技术有限公司 | cross-layer service configuration method and controller |
| CN107295430B (en) * | 2017-06-19 | 2019-09-06 | 西安空间无线电技术研究所 | A kind of photoelectricity isomery switching path generation method based on load balancing |
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| CN1780190A (en) * | 2004-11-20 | 2006-05-31 | 中兴通讯股份有限公司 | Optical network service processing method |
| CN101127628A (en) * | 2006-08-14 | 2008-02-20 | 华为技术有限公司 | A method for managing and transmitting small granularity service |
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| CN1780190A (en) * | 2004-11-20 | 2006-05-31 | 中兴通讯股份有限公司 | Optical network service processing method |
| CN101127628A (en) * | 2006-08-14 | 2008-02-20 | 华为技术有限公司 | A method for managing and transmitting small granularity service |
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