CN102098596B - Route establishing method and device in optical network - Google Patents
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Abstract
The invention provides a route establishing method and a route establishing device in an optical network. The method comprises the following steps that: a source node selects a destination path to a destination node according to resource information of the optical network and physical parameters corresponding to nodes in the optical network; and the source node transmits a route establishing signaling message to perform a signaling route establishing process on a control plane according to the destination path. The device comprises a selection module and a route establishing module, wherein the selection module is used for selecting the destination path to the destination node according to the resource information of the optical network and the physical parameters corresponding to the nodes in the optical network; and the route establishing module is used for transmitting the route establishing signaling message to perform the signaling route establishing process on the control plane according to the destination path. The technical scheme can improve the success rate of establishing a light path to the destination node according to the acquired destination path so as to improve the efficiency of establishing the light path to the destination node.
Description
Technical field
The present invention relates to the optical communication network technology, relate in particular to route method for building up and device in a kind of optical-fiber network.
Background technology
The Next Generation Optical Transport Network network is the ASON take service-oriented, user oriented as principal character, mainly three planes, consists of: management plane, transmit plane and control plane.ASON has the intelligent feature that a series of traditional communication nets can't be realized, such as fastext assignment, protection recovery automatically, efficient resource distribution etc., and these functions depend on a powerful control plane.Some International Standards Organization are studied the control plane correlation technique at present, wherein, and ASON (Automatically Switched Optical Network; Referred to as: ASON) G.8080 framework has defined the main functional modules in the control plane, general multiple protocols label exchange (Generalized MultiProtocol Label Switching; Referred to as: GMPLS) system provides foundation for the specific implementation of control plane.
Wherein, management plane manages whole optical-fiber network, and principal character is distribution and the intellectuality of management function.Control plane has been responsible for the functions such as business is end to end set up, business is removed, protection is switched by each node on it, and its main feature is that the function that former cause centralized network tube apparatus is completed is changed into by distributed node and completing.Transmit plane and formed by a series of transmission entity, be used for providing unidirectional or two-way information transfer channel end to end; Transmit plane and possess hierarchy, can support Technology of Multi-Granularity Optical Switching.
In prior art, the flow process that business is set up comprises: the source node on control plane calculates a paths according to the resource information of storage, then, along the path hop-by-hop that calculates, sends signaling message; Intermediate node after receiving signaling message, judges whether the resource of this node is sufficient; , if resource is sufficient, after the reservation resource, signaling message is transmitted to next-hop node; , in control plane checking resource abundance and after reserving resource, transmit plane and set up light path along corresponding path.Wherein, actual physical network owing to transmitting plane, success is set up business thereon, depend on not only whether resource is sufficient, therefore, in actual application, when control plane checking resource abundance and after reserving resource, transmitting plane often can't be successful when setting up light path, need to return to control plane and reselect a paths, and this success rate and efficiency that makes light path set up is all lower.Prior art is reserved and has been proposed some technical schemes for the distributed resource of the control plane of ASON, but is mainly that it does not relate to the improvement project of setting up light path for the scheduling of resource (for example time slot or wavelength).
Summary of the invention
The invention provides route method for building up and device in a kind of optical-fiber network, in order to solve the prior art light path, set up the low and low problem of success rate of the efficiency that exists in process, improve the success rate that the efficiency of setting up light path and light path are set up.
The invention provides route method for building up in a kind of optical-fiber network, comprising:
Source node, according to physical parameter corresponding to each node in the resource information of optical-fiber network and described optical-fiber network, is selected a destination path to destination node;
Described source node, according to described destination path, sends the road construction signaling message to carry out signaling road construction process on control plane.
The invention provides route apparatus for establishing in a kind of optical-fiber network, comprising:
Select module, be used for resource information and physical parameter corresponding to each node of described optical-fiber network according to optical-fiber network, select a destination path to destination node;
The road construction module, be used for according to described destination path, sends the road construction signaling message to carry out signaling road construction process on control plane.
Route method for building up and device in optical-fiber network provided by the invention, while is in conjunction with resource information and the physical parameter corresponding to each node of optical-fiber network, choose the destination path of destination node, according to destination path, send the road construction signaling message to carry out signaling road construction process.Technical solution of the present invention is due to when getting the destination path of destination node, considered physical parameter corresponding to each node, improved according to the destination path that obtains and be established to the success rate of the light path of destination node, and then improved the efficiency of the light path that is established to destination node.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The flow chart of route method for building up in the optical-fiber network that Fig. 1 provides for the embodiment of the present invention one;
The flow chart of route method for building up in the optical-fiber network that Fig. 2 provides for the embodiment of the present invention two;
The structural representation of the optical-fiber network based on Optical Signal To Noise Ratio that Fig. 3 A provides for the embodiment of the present invention three;
The flow chart of route method for building up in the optical-fiber network that Fig. 3 B provides for the embodiment of the present invention three;
The structural representation of route apparatus for establishing in the optical-fiber network that Fig. 4 provides for the embodiment of the present invention four;
The structural representation of route apparatus for establishing in the optical-fiber network that Fig. 5 provides for the embodiment of the present invention five.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment that obtains, belong to the scope of protection of the invention.
set up in process at light path, set up light path at transmission plane success and depend on not only whether resource is enough, also depend on various relevant physical parameters, only have after resource and relevant physical parameter all meet the demands, light path can really be successfully established, and prior art has only been considered resource problem, do not consider the impact that relevant physical parameter is set up light path, therefore, exist light path to be created as power lower, the problem that efficiency is lower, based on this, following examples of the present invention provide a kind of and consider that simultaneously resource and relevant physical parameter carry out the technical scheme that light path is set up.
The flow chart of route method for building up in the optical-fiber network that Fig. 1 provides for the embodiment of the present invention one.As shown in Figure 1, the method for the present embodiment comprises:
Wherein, the resource information of having preserved current optical-fiber network in each node of optical-fiber network, the form with LSD on each node is stored.In addition, each node also can be stored physical parameter corresponding to each node in current optical-fiber network, and wherein, the physical parameter that each node is corresponding can be the physical parameter of each node itself, can be also the physical parameter of the link that is connected with node.Wherein, the physical parameter that each node is corresponding can be wherein any one or its combination such as Optical Signal To Noise Ratio, the error rate, dispersion, polarization mode dispersion, decay or input-output power.Wherein, physical parameter is not limited to above-mentioned listed enumerating, and can be any physical parameter of light path being set up influential transmission plane.
In the present embodiment, set in advance judgment condition on each node in optical-fiber network, this judgment condition is used for judging in signaling road construction process whether physical parameter is qualified for node.Concrete, the physical parameter that source node (belonging in above-mentioned each node) is corresponding according to resource information, each node of preserving and pre-configured judgment condition, calculate a destination path to destination node.Physical parameter corresponding to each node on this destination path meets pre-configured judgment condition, and for example Optical Signal To Noise Ratio is greater than default snr threshold, and dispersion values is less than default dispersion threshold value etc.
Concrete, signaling road construction process comprises: source node is to the decision operation of destination node: source node after calculating the destination path of destination node, according to the destination path that calculates to each node hop-by-hop transmission road construction signaling message on this destination path; , for the arbitrary node on this destination path, when receiving the road construction signaling message, judge mainly whether the resource of this node is sufficient, and in the situation that the resource abundance forwards the road construction signaling message to next node.
Destination node operates to the resource reservation of source node: when destination node receives the road construction signaling message, and send RSVP message along destination path to source node when resource is sufficient, so that the node on destination path carries out resource reservation; , for the arbitrary node on this destination path, carry out resource reservation according to the RSVP message that receives, and RSVP message is transmitted to the next node that the party makes progress; When source node receives RSVP message, illustrate and set up the light path of source node to destination node on control plane.
Wherein, in decision operation, when node is judged inadequate resource, perhaps in the resource reservation operation, when the node judgement can't be reserved resource, node can be according to the signaling mechanism of turning back to source node return node thrashing message, so that source node reselects destination path.
Route method for building up in the optical-fiber network of the present embodiment, while is in conjunction with resource information and the physical parameter corresponding to each node of optical-fiber network, choose the destination path of destination node, carry out signaling road construction process according to selected destination path, for the light path that is established to destination node on the transmission plane is done basis on control plane.The present embodiment is due to when getting the destination path of destination node, considered physical parameter corresponding to each node, in the signaling road construction process of control plane, the physical parameter that transmits plane is considered, improved after control plane carries out signaling road construction success, be established to the success rate of the light path of destination node on the transmission plane, and then improved the efficiency of the light path that is established to destination node.
The flow chart of route method for building up in the optical-fiber network that Fig. 2 provides for the embodiment of the present invention two.The present embodiment is based on embodiment one realization, and the something in common of the present embodiment and embodiment one repeats no more, and as shown in Figure 2, the method for the present embodiment comprises:
Concrete, this step 20 comprises: step 201, each node obtain physical parameter corresponding to this node at control plane, such as: Optical Signal To Noise Ratio, the error rate, dispersion, polarization mode dispersion, attenuation or input-output power etc.In the present embodiment, each node can be considered as consisting of the node two parts on the node of control plane and transmission plane, and the node on the node of control plane and transmission plane is integrated on an equipment usually, but is not limited to this.Each node is specifically collected relevant physical parameter by the node of its control plane according to the physical parameter information that the node that transmits plane reports, and also can collect relevant physical parameter by the transducer that is arranged on the node that transmits plane by the node of its control plane.
Step 202, each node flood physical parameter in the optical-fiber network of place;
Each node after collecting relevant physical parameter, floods physical parameter in the optical-fiber network of place.Wherein, the principle that floods is: if the message that floods that node receives is the content that node does not upgrade, the message that will flood after this content of node updates forwards to all of the port; If the message that floods that node receives is the content that this node has upgraded, node no longer forwards this updating message.In the present embodiment, physical parameter corresponding to this node that message refers to that each node is collected that flood.By flooding, in optical-fiber network, each node can be preserved the relevant physical parameter of each node in whole optical-fiber network.
In the present embodiment, flooding of physical parameter can be by (the Open Shortest Path First-Traffic Engineering of the ospf with traffic engineering; Referred to as: OSPF-TE) Routing Protocol carries out.Although these physical parameters are not definition in the OSPF-TE consensus standard, but because the OSPF-TE agreement is an extendible agreement, and this OSPF-TE agreement regulation: can new parameter be flooded by Sub-TLV (Type/Length/Value) structure of expansion.Sub-TLV is the minor structure form of a standard of OSPF-TE agreement, is mainly used to store the new data that flood, and Sub-TLV can level be associated in the OSPF-TE agreement.In the present embodiment, can set different type (type) values for dissimilar physical parameter, the value of physical parameter is filled out in value (Value) field, form newly-increased TLV; The TLV level that then will increase newly is associated in the OSPF-TE protocol package and floods.The expansion content of relevant more Sub-TLV can see (the Generalized Multi-Protocol Label Switching of general multiple protocols sign exchange agreement in IETF RFC4203 for details; Referred to as: description GMPLS) is not described in detail at this.
Wherein, sex-limited when the physical parameter that each node is corresponding in optical-fiber network has, therefore, each node can periodically obtain corresponding physical parameter in the present embodiment, and periodically floods; Cycle or the frequency of wherein obtaining physical parameter can preset, and this present embodiment is not done restriction.In addition,, except periodically obtaining relevant physical parameter, can also obtain up-to-date, real-time physical parameter by the special operation of obtaining before execution step 21.Be that step 20 is specifically periodically obtained physical parameter and still by the special operation of obtaining, obtained physical parameter, the present embodiment is not done restriction.
Step 203, source node receive the physical parameter that each node sends in the mode of flooding.
Wherein, source node receives the physical parameter that other nodes send by the OSPF-TE agreement.
In the present embodiment, step 21 can adopt but be not limited to following execution mode and realize, this execution mode comprises:
Step 210, source node, according to optical network resource information, obtain the first path;
Wherein, in optical-fiber network, certain link changes in network, also can notify nodes all in optical-fiber network with change information by flooding mechanism, and this change information mainly comprises the resource information of each node that relates to., based on this, preserved the resource information in current optical-fiber network on source node, such as wavelength resource, time interval resource etc.
Concrete, source node, according to the network resource information of preserving, calculates a path to destination node, is called in the present embodiment the first path, comprises one or more intermediate nodes that lead to destination node on this first path.
Step 211, source node judge whether physical parameter corresponding to the node on the first path meets default judgment condition; If judgment result is that to be, execution step 212; Otherwise, execution step 210.
Set up in the process of light path in order to make in the transmission aspect, on path, the physical parameter of the inbound port of each node and outbound port can meet the needs that light path is set up, the source node of the present embodiment is after calculating the first path, physical parameter and predefined judgment condition that on the first path, each node is corresponding are compared, on control plane, the physical parameter that transmits on plane is being judged.Wherein, judgment condition can be the threshold value of respective physical parameter in national standard, industry standard, can be also the empirical value of respective physical parameter sanctified by usage.In addition, the grade of service of different business is different, and therefore, judgment condition can be also the decision threshold according to the parameter of respective physical end to end of certain grade of service setting.In the present embodiment, physical parameter is judged the judgment condition of use can be made an appointment, also can carry real-time Transmission by the signaling of expansion.Each node of finger the whole network of making an appointment is made an appointment and all by certain judgment condition, physical parameter is adjudicated while fortunately receiving the road construction signaling, and the road construction signaling of receiving is not distinguished.Carrying real-time Transmission by expanded signalling refers to, for each business, comprised judgment condition in source node sends when carrying out the signaling road construction road construction signaling message, this judgment condition passes to downstream node (being each node on destination path) with road construction signaling message hop-by-hop, for downstream node to according to this judgment condition, its corresponding physical parameter being judged, this mode helps business dissimilar, different priorities is used different judgment condition, and flexibility is stronger.
Wherein, when physical parameter corresponding to each node meets default judgment condition, with this first path as to the destination path of destination node, when follow-up according to this destination path signaling road construction when success on control plane, impact in the time of can reducing physical parameter on the road construction of transmission plane, improved the success rate that transmits the plane road construction; Otherwise, turn step 210, namely again according to the resource information of preserving, calculate first a new path, and continue to carry out subsequent operation.
Step 212, source node determine that the first path is the destination path to destination node;
Be about to the first path as the path to destination node., when reducing physical parameter based on this destination path on the impact when transmitting the plane road construction when the control plane road construction is successful, improve the success rate when transmitting the plane road construction like this.
In the present embodiment, step 22 can adopt but be not limited to following execution mode, and this execution mode comprises:
Step 221, source node send the road construction signaling message to the first node on destination path;
Wherein, first node refers to present node, and it can be to any one node (except source node) on the destination path of destination node.Wherein, when first node was first node on destination path, source node sent road construction signaling message at control plane to this first node, to carry out signaling road construction process; When first node was other nodes except first node, this first node received by signaling message of the road construction from source node that node forwards on it.This road construction signaling message comprises node on the address information, resource information, destination path of source node, destination node and binding information of port (such as inbound port, outbound port) etc.Wherein, when the physical parameter used in the whole optical-fiber network of having made an appointment, this road construction signaling message can adopt road construction signaling message of the prior art, and each node carries out respective handling to whole physical parameters of making an appointment.In addition, during optical-fiber network uses if do not make an appointment physical parameter, the source node of the present embodiment can carry the physics parameter information by some fields in this road construction signaling message, to inform on destination path that each node is used for the physical parameter of selecting destination path to be used, and each node is processed to the respective physical parameter.
Step 222, first node judge according to the road construction signaling message whether the resource of this node is sufficient; , if judgment result is that to be, perform step 223; Otherwise, execution step 225;
Wherein, if the resource of this node is sufficient, the required resource of explanation business is enough; Otherwise the required resource of explanation business is inadequate, the signaling road construction failure of control plane.
Step 223, first node judge whether physical parameter corresponding to this node meets default judgment condition; If judgment result is that to be, namely the physical parameter of this node meets default judgment condition, performs step 224; Otherwise, execution step 21.
Wherein, when judgment result is that while being, explanation is set up process this business, this node meets in the physical parameter of the inbound port that transmits plane and the physical parameter of outbound port the needs that light path corresponding to this business set up, meet national standard, industry standard or empirical value sanctified by usage, also illustrate on the upper hop link and not only can set up path for this business on control plane, also can successfully for this business, set up light path on the transmission plane.When the determination result is NO, the required resource of explanation business is enough, can set up path for this business on control plane, but it transmits physical parameter relevant on plane, such as Optical Signal To Noise Ratio, the error rate, dispersion, polarization mode dispersion attenuation or input-output power etc., or other physical parameter can't meet this business in the demand of setting up that transmits on plane.Because the foundation of light path is actually in the foundation that transmits on plane, therefore in this case, it is failed that light path is set up, and needs control plane to adopt the signaling mechanism of turning back to recalculate a new path by source node, to re-start signaling road construction process.
Step 224, first node forward the road construction signaling message next node that is given on destination path, so that next node is carried out the operation identical with first node according to the road construction signaling message, until destination node, and perform step 226;
Concrete, when first node is judged this node and met simultaneously the resource requirement that transmitting on plane while setting up light path and physical parameter demand, the road construction signaling message is transmitted to next node.Wherein, the operation of next node is identical with the operation of first node, until signaling is forwarded to destination node, and execution step 226.
Step 225, to source node return node thrashing message, and trigger source node execution step 21;
In step 225, can be first node return node thrashing message, can be also to return to other nodes on destination path.
Step 226, destination node are returned to RSVP message along destination path to source node, and carry out resource reservation, to complete the signaling road construction process on control plane.
Wherein, in this step 226, each node on destination path carries out resource reservation according to RSVP message, and forwards the next node of RSVP message to this direction., with resource reservation, namely on resource database, respective resources is labeled as reservation state on control plane.In addition, when node can't correctly be reserved resource, also can be according to the signaling mechanism of turning back to source node return node thrashing message.
When RSVP message arrives source node, mean and set up a virtual link on control plane, each node on control plane has been reserved resource for virtual link, i.e. and the signaling road construction at control plane finishes.At this moment, source node will send the resource reservation acknowledge message along destination path to destination node, receive that the node control of the control plane of this message transmits the node on plane accordingly, take the resource of reservation, set up the light path that transmits plane, namely be established to physically the light path of destination node.
wherein, adopt in the present embodiment flooding mechanism to carry out the synchronous of whole optical-fiber network to physical parameter, but may mistake appear because of link failure etc. in the process that floods, also may the corresponding physical parameter physical parameter when flooding when receiving the road construction signaling message be no longer consistent because the timing mechanism that floods makes each node, therefore, the present embodiment is judged the physical parameter that transmits on plane by each node on the direction of destination node at source node, can prevent in the process of flooding the situation that occurs that physical parameter wrong or that the timing mechanism that floods causes changes, further improved the success rate that transmits the plane road construction.
In this explanation, in the above-described embodiments, node on destination path is to judge that whether sufficient resource judge physical parameter in, the decision operation that is equivalent to physical parameter is to carry out along the direction from the source node to the destination node, this execution mode is a kind of optimal way, but is not limited to this.For example: the node on destination path can also judge physical parameter when carrying out resource reservation, and the decision operation that is equivalent to physical parameter is to carry out along the direction from the destination node to the source node.Wherein, on the destination path that those skilled in the art provide in conjunction with the present embodiment each node on from source node to the destination node direction to the decision operation of physical parameter, be appreciated that and can implement each node from destination node to the source node direction on to the decision operation of physical parameter, therefore be not described in detail in this.
route method for building up in the optical-fiber network of the present embodiment, each node by control plane is collected relevant physical parameter, the physical parameter of collecting floods in the whole network, and in the signaling road construction, the physical parameter of collecting is adjudicated, realized in the road construction process of control plane, the physical parameter that transmits plane being judged, thereby while having guaranteed that resource is enough set up business on control plane, guarantee also can set up light path corresponding to business on the transmission plane, thereby avoided business in road construction success on control plane but transmitted the unsuccessful situation of road construction on plane, improved business in the success rate that transmits the plane road construction, and then improved business in the efficiency that transmits the plane road construction.
The structural representation of the optical-fiber network based on Optical Signal To Noise Ratio that Fig. 3 A provides for the embodiment of the present invention three.The flow chart of route method for building up in the optical-fiber network that Fig. 3 B provides for the embodiment of the present invention three.In the topology shown in the present embodiment Fig. 3 A, suppose that the resource that business is reserved is the 1st wavelength, on the 1st wavelength, each node enter the Optical Signal To Noise Ratio difference.In node 2 uplink＜1,2〉on the Optical Signal To Noise Ratio that enters of the 1st wavelength be 22dB; In node 3 uplink＜2,3〉the Optical Signal To Noise Ratio that enters of the 1st wavelength be 20dB; In node 5 uplink＜3,5〉the Optical Signal To Noise Ratio that enters of the 1st wavelength be 18dB; At node 4 uplink＜Isosorbide-5-Nitrae〉the Optical Signal To Noise Ratio that enters of the 1st wavelength be 21dB; In node 5 uplink＜4,5〉the Optical Signal To Noise Ratio that enters of the 1st wavelength be 17dB; In node 3 uplink＜1,3〉the Optical Signal To Noise Ratio that enters of the 1st wavelength be 17dB; In node 4 uplink＜2,4〉the Optical Signal To Noise Ratio that enters of the 1st wavelength be 16dB.And hypothesis will be from node 1 to node 5 be set up a light path in the present embodiment.
, if only consider whether resource is enough, do not consider whether the Optical Signal To Noise Ratio that transmits plane meets the demands, and source node can calculate four light pathes according to occupation condition: the having of double bounce: node 1-node 4-node 5 and node 1-node 3-node 5; Having of three jumpings: node 1-node 2-node 3-node 5 and node 1-node 2-node 4-node 5.If do not consider whether the Optical Signal To Noise Ratio that transmits plane meets the demands, acquiescence is selected the path of minimum hop count, supposes to select the path of double bounce: node 1-node 4-node 5.While setting up path by signaling on control plane, reserved the resource of the 1st wavelength.The path of setting up according to control plane on the transmission plane afterwards takies wavelength resource on the 1st wavelength of node 1-node 4-node 5, the transmission of data, set up light path.Yet,, according to national standard or industry standard, transmitting internodally on plane to enter Optical Signal To Noise Ratio and be correlated with, the Optical Signal To Noise Ratio business that enters that meets certain condition could be actual open-minded.In the present embodiment, suppose that judgment condition is to be not less than 18dB into Optical Signal To Noise Ratio.If control plane does not consider to transmit the physical parameter judgment condition on plane, although set up path on control plane be: node 1-node 4-node 5, wavelength is the connection of the 1st wavelength, when transmitting the plane road construction, due in node 5 uplink＜4, the Optical Signal To Noise Ratio that enters of the 1st wavelength 5〉is 17dB, the Optical Signal To Noise Ratio that enters that does not meet more than or equal to 18dB limits, at the 1st wavelength that transmits node 4-node 5 on plane, can't set up, the light path of the 1st wavelength of the node 1-node 4 of having set up also will be dismantled again, re-starts road construction.
If consider not only whether resource is enough, also considered to transmit the correlation circumstance of the physical parameter Optical Signal To Noise Ratio on plane, only have a node 1-node 2-node 3-node 5 can meet the requirement of physical parameter Optical Signal To Noise Ratio in four light pathes.Based on this, the method for routing foundation of the present embodiment as shown in Figure 3 B, comprising:
Each node of step 31, control plane is collected into Optical Signal To Noise Ratio, and the Optical Signal To Noise Ratio that enters of collecting floods in the whole network.
In the present embodiment, 5 nodes of control plane are collected the relevant physical parameter that transmits planes, and namely each each wavelength of node enters Optical Signal To Noise Ratio.Entering Optical Signal To Noise Ratio can be reported by the node that transmits plane, also can be by the transducer generated data.Entering Optical Signal To Noise Ratio is a variable, the renewal of can periodically collecting and flood.
In the present embodiment, judgment condition is set to be not less than 18dB into Optical Signal To Noise Ratio.
the present embodiment is collected into Optical Signal To Noise Ratio information by each node of control plane, and enter Optical Signal To Noise Ratio and whether more than or equal to 18dB, adjudicate what collect in the signaling road construction, realized judging entering Optical Signal To Noise Ratio in control plane signaling road construction process, while guaranteeing that resource is enough set up business on control plane, guarantee also can set up light path corresponding to business on the transmission plane, avoided business in road construction success on control plane but transmitted the unsuccessful situation of road construction on plane, improved the success rate of business road construction, and then improved the efficiency of business road construction.
The structural representation of route apparatus for establishing in the optical-fiber network that Fig. 4 provides for the embodiment of the present invention four.As shown in Figure 4, the device of the present embodiment comprises: select module 41 and road construction module 42.
Above-mentioned each functional module can be used for carrying out the flow process of route method for building up in the optical-fiber network that said method embodiment provides, and its operation principle sees the description of embodiment of the method for details, does not repeat them here.
Route apparatus for establishing in the optical-fiber network of the present embodiment, while is in conjunction with resource information and the physical parameter corresponding to each node of optical-fiber network, choose the destination path of destination node, carry out signaling road construction process according to selected destination path, for the light path that is established to destination node on the transmission plane is done basis on control plane.The device of the present embodiment is when obtaining destination path, considered physical parameter corresponding to each node, in the signaling road construction process of control plane, the physical parameter that transmits plane is considered, improved after control plane carries out signaling road construction success, be established to the success rate of the light path of destination node on the transmission plane, and then improved the efficiency of the light path that is established to destination node.
The structural representation of route apparatus for establishing in the optical-fiber network that Fig. 5 provides for the embodiment of the present invention five.The present embodiment realizes based on above-described embodiment, and as shown in Figure 5, the device of the present embodiment also comprises: acquisition module 51.
Wherein, acquisition module can be used for carrying out in said method embodiment the corresponding flow process of obtaining physical parameter, and its operation principle sees the description of embodiment of the method for details, does not repeat them here.
Route apparatus for establishing in the optical-fiber network of the present embodiment, can obtain physical parameter corresponding to each node by acquisition module, for selecting module, according to physical parameter, selects destination path to lay the foundation.
Further, a kind of implementation structure of the selection module 41 of the present embodiment comprises: acquiring unit 411, judging unit 412, determining unit 413 and trigger element 414.
Concrete, acquiring unit 411, be used for the resource information according to optical-fiber network, obtains the first path; Judging unit 412, be connected with acquiring unit 411, is used for judging whether physical parameter corresponding to node on the first path meets default judgment condition; Determining unit 413, be connected with judging unit 412, is used for determining that the first path is destination path when judgment result is that of judging unit 412 is; Trigger element 414, be connected with judging unit 412, is used for when the determination result is NO, triggering the resource information that acquiring unit 411 is carried out according to optical-fiber network at judging unit 412, obtains the operation in the first path.
Above-mentioned each functional unit can be used for carrying out the detailed process that obtains destination path in said method embodiment, and its operation principle sees the description of embodiment of the method for details, does not repeat them here.
Further, a kind of implementation structure of the road construction module 42 of the present embodiment comprises: transmitting element 421 and receiving element 422.
concrete, transmitting element 421, respectively with optical-fiber network in each node (not shown) are connected and are connected with determining unit, be used for sending the road construction signaling message along the destination path that determining unit 413 is determined to the first node on destination path, whether the resource that judges this node according to the road construction signaling message for first node whether physical parameter corresponding to sufficient and judgement meets default judgment condition, and return node thrashing message when inadequate or physical parameter does not meet default judgment condition in resource, or will state the road construction signaling message be transmitted to next node on destination path when resource abundance and physical parameter meet default judgment condition, receiving element 422, with each node (not shown) in optical-fiber network be connected module 41 to be connected, be used for the receiving node thrashing message, re-execute according to physical parameter corresponding to each node in the resource information of optical-fiber network and optical-fiber network with triggering selection module 41, select an operation to the destination path of destination node.
A kind of implementation of the road construction module that above-mentioned each functional unit is the present embodiment but be not limited to this, above-mentioned each functional unit can be used for carrying out the detailed process of signaling road construction process in said method embodiment, its operation principle sees the description of embodiment of the method for details, does not repeat them here.
Further, in the various embodiments described above, physical parameter corresponding to each node can be wherein any one or its combination such as Optical Signal To Noise Ratio, the error rate, dispersion, polarization mode dispersion, attenuation or input-output power, in addition, the physical parameter of other any impacts transmission plane road construction processes all is applicable to the various embodiments described above.
in sum, route apparatus for establishing in the optical-fiber network of the present embodiment, each node by control plane is collected relevant physical parameter, the physical parameter of collecting floods in the whole network, and in the signaling road construction, the physical parameter of collecting is adjudicated, realized in the road construction process of control plane, the physical parameter that transmits plane being judged, thereby while having guaranteed that resource is enough set up business on control plane, guarantee also can set up light path corresponding to business on the transmission plane, thereby avoided business in road construction success on control plane but transmitted the unsuccessful situation of road construction on plane, improved business in the success rate that transmits the plane road construction, and then improved business in the efficiency that transmits the plane road construction.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be completed by the hardware that program command is correlated with, aforesaid program can be stored in a computer read/write memory medium, this program when carrying out, is carried out the step that comprises said method embodiment; And aforesaid storage medium comprises: the various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that finally: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. route method for building up in an optical-fiber network, is characterized in that, comprising:
Source node, according to physical parameter corresponding to each node in the resource information of optical-fiber network and described optical-fiber network, is selected a destination path to destination node;
Described source node, according to described destination path, sends the road construction signaling message to carry out signaling road construction process on control plane;
Wherein, described source node, according to described destination path, sends the road construction signaling message and comprises to carry out signaling road construction process on control plane:
The first node of described source node on along described destination path to described destination path sends described road construction signaling message;
Described first node judges according to described road construction signaling message whether the resource of this node is sufficient;
If judgment result is that resource is inadequate, described first node is to described source node return node thrashing message,, so that described source node re-executes according to physical parameter corresponding to each node in the resource information of optical-fiber network and described optical-fiber network, select an operation to the destination path of destination node;
If judgment result is that resource is sufficient, described first node judges whether physical parameter corresponding to this node meets default judgment condition;
If judgment result is that and do not meet default judgment condition, described first node is to described source node return node thrashing message,, so that described source node re-executes according to physical parameter corresponding to each node in the resource information of optical-fiber network and described optical-fiber network, select an operation to the destination path of destination node;
If judgment result is that and meet default judgment condition, described first node is transmitted to next node on described destination path with described road construction signaling message, so that described next node is carried out the operation identical with described first node according to described road construction signaling message, until described destination node.
2. route method for building up in optical-fiber network according to claim 1, it is characterized in that, described source node according to the resource information of optical-fiber network and described optical-fiber network in physical parameter corresponding to each node, select also to comprise before a destination path to destination node:
Described source node obtains physical parameter corresponding to described each node.
3. route method for building up in optical-fiber network according to claim 2, is characterized in that, described source node obtains physical parameter corresponding to described each node and comprises:
Described each node obtains physical parameter corresponding to this node, and described physical parameter is flooded in described optical-fiber network;
Described source node receives the physical parameter that described each node sends in the mode of flooding.
4. route method for building up according to claim 1 and 2 or 3 described optical-fiber networks, it is characterized in that, described source node, according to physical parameter corresponding to each node in the resource information of optical-fiber network and described optical-fiber network, selects the destination path to destination node to comprise:
Described source node, according to the resource information of described optical-fiber network, obtains the first path;
Described source node judges whether physical parameter corresponding to the node on described the first path meets described default judgment condition;
If judgment result is that to be, described source node determines that described the first path is described destination path;
If the determination result is NO, described source node returns to the resource information of carrying out according to described optical-fiber network, obtains the operation in the first path.
5. route method for building up according to claim 1 and 2 or 3 described optical-fiber networks, it is characterized in that, physical parameter corresponding to described each node comprises following any one or its combination: Optical Signal To Noise Ratio, the error rate, dispersion, polarization mode dispersion, attenuation or input-output power.
6. route apparatus for establishing in an optical-fiber network, is characterized in that, comprising:
Select module, be used for resource information and physical parameter corresponding to each node of described optical-fiber network according to optical-fiber network, select a destination path to destination node;
The road construction module, be used for according to described destination path, sends the road construction signaling message to carry out signaling road construction process on control plane;
Wherein, described road construction module comprises:
Transmitting element, first node on being used for along from described destination path to described destination path sends described road construction signaling message, whether the resource that judges this node according to described road construction signaling message for described first node whether physical parameter corresponding to sufficient and judgement meets default judgment condition, and when the inadequate or described physical parameter of resource does not meet default judgment condition the return node thrashing message, or described road construction signaling message is transmitted to when sufficient and described physical parameter meets default judgment condition in resource next node on described destination path;
Receiving element, be used for receiving described node failure message, to trigger described selection module, re-executes according to physical parameter corresponding to each node in the resource information of optical-fiber network and described optical-fiber network, selects an operation of arriving the destination path of destination node.
7. route apparatus for establishing in optical-fiber network according to claim 6, is characterized in that, also comprises:
Acquisition module, be used for obtaining physical parameter corresponding to described each node before described selection module is selected described destination path.
8. route apparatus for establishing in smooth networking according to claim 7, is characterized in that, described acquisition module specifically is used for receiving physical parameter that described each node obtains and that send in the mode of flooding.
9. route apparatus for establishing according to claim 6 or 7 or 8 described optical-fiber networks, is characterized in that, described selection module comprises:
Acquiring unit, be used for the resource information according to described optical-fiber network, obtains the first path;
Judging unit, be used for judging whether physical parameter corresponding to node on described the first path meets described default judgment condition;
Determining unit, be used for determining that described the first path is described destination path when judgment result is that of described judging unit is;
Trigger element, be used for when the determination result is NO, triggering the resource information of described acquiring unit execution according to described optical-fiber network at described judging unit, obtains the operation in the first path.
10. route apparatus for establishing according to claim 6 or 7 or 8 described optical-fiber networks, it is characterized in that, physical parameter corresponding to described each node comprises following any one or its combination: Optical Signal To Noise Ratio, the error rate, dispersion, polarization mode dispersion, attenuation or input-output power.
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| CN103457877B (en) * | 2012-06-01 | 2018-07-27 | 中兴通讯股份有限公司 | path establishment method and device |
| CN104010236B (en) * | 2014-06-17 | 2017-06-06 | 国家电网公司 | Optical circuit path planing method |
| US20170134089A1 (en) * | 2015-11-09 | 2017-05-11 | Mohammad Mehdi Mansouri Rad | System and method of configuring an optical network |
| CN105939499B (en) * | 2016-04-14 | 2019-01-15 | 烽火通信科技股份有限公司 | A kind of method and system of mobile POTN transmission network tunnel rapid configuration |
| CN106788708A (en) * | 2016-12-22 | 2017-05-31 | 云南电网有限责任公司 | The OSNR computational methods of OTN networks |
| CN107948766B (en) * | 2017-11-16 | 2020-11-06 | 北京邮电大学 | Route selection optimization method and device |
| CN110912821A (en) * | 2019-11-01 | 2020-03-24 | 中国联合网络通信集团有限公司 | Route distribution method and device |
| CN112054921B (en) * | 2020-08-06 | 2021-09-03 | 清华大学 | Network verification method and device, computer storage medium and electronic equipment |
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