CN101415131A - Self-adapting transmission control method for optical network based on signaling - Google Patents
Self-adapting transmission control method for optical network based on signaling Download PDFInfo
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- CN101415131A CN101415131A CNA200810226977XA CN200810226977A CN101415131A CN 101415131 A CN101415131 A CN 101415131A CN A200810226977X A CNA200810226977X A CN A200810226977XA CN 200810226977 A CN200810226977 A CN 200810226977A CN 101415131 A CN101415131 A CN 101415131A
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Abstract
The invention provides a self-adaptable transmission control method in an optical network based on signals. The method can introduce an adjustable optical device into the transfer plane of the optical transmission network, extends the signal protocols, and utilizes the signal messages to collect the physical damage information and adjustable physical compensation device information of all parts in the network; according to the physical information, the newly increased performance evaluation module of the control plane evaluates the signal transmission quality, thus judging whether the signals are needed to be optimized or not according to the evaluation results; if so, the signals are globally optimized according to the transmission quality requirement and the adjusting quantity of the adjustable optical device is calculated; furthermore, the adjusting quantity is sent to all nodes, thus achieving the self-adaptable transmission of the optical transmission network, and improving the transmission quality of the optical signal.
Description
Technical field
The present invention relates to the optical-fiber network technical field, be specifically related in a kind of optical-fiber network self-adapting transmission control method based on signaling.
Background technology
With ASON (ASON, Automatically Switched Optical Networks) is the intelligent optical-fiber network of typical case's representative, from network management system, isolated control plane, introduced the automatic controlled function of a part to optical-fiber network, realized automatic connection management, but it does not improve better to transmitting the plane.At present, intelligent optical-fiber network can't carry out intelligent monitoring, control and adjusting to transmitting the plane, thereby also just can not provide solid foundation for the upper strata connects to tear down and build automatically with the multi-service transmission.
Simultaneously, for increasing the flexibility and the extensibility of optical-fiber network, reduce expense and time delay that the conversion of photoelectricity light brings, reduce owing to introduce the cost that the photoelectricity photoconverter is increased, all-optical network will become a kind of development trend of optical-fiber network.In all-optical network, the photoelectricity photoconverter will fade out from the core node of optical-fiber network gradually, to realize the transparent transmission of light signal in optical-fiber network.But along with withdrawing from of photoelectricity photoconverter, the light signal of long Distance Transmission will be owing to physically impaired accumulation such as power loss, chromatic dispersion, noise in the light territory, cause the deterioration of transmission quality, so that can't satisfy the receiving terminal requirement of quality to received signal, and then can't from light signal, correctly parse relevant information.
Therefore, in ASON,, carry out suitable selection control, improve the transmission quality that transmits the plane, the transmission of flexibility and reliability is provided, become a main direction of studying of optical transfer network by control plane how according to the physical message that transmits the plane.For addressing this problem, prior art mainly contains following two kinds of solutions:
1. the transmission plane physical message with perception combines with routing iinformation, wavelength information, takes all factors into consideration physical damnification information, physical topology relation and different wave length to the influence of transmission quality, and the routing that does not meet transmission quality requirements is filtered.
2. in transmitting the plane, introduce the adaptive optical device that can compensate physical damnification, introduce the node of adaptive optical device and will monitor link transmission quality.By the link that does not meet transmission quality requirements is fed back, finish the self adaptation of adaptive optical device and regulate, realize the optimization of transmission quality.
In above-mentioned two kinds of solutions, though first kind of scheme can be optimized route wavelength algorithm by taking all factors into consideration the route wavelength information.But this scheme has just been abandoned some and has not been met the possible path of transmission quality requirements, can not be optimized signal transmission quality, and has reduced the probability that the reliable transmission path is provided.
For second kind of scheme, some adaptive optical devices of some manufacturers produce have been arranged, these adaptive optical devices are compared with the device of the same type of preset parameter, can regulate automatically in transmission plane realization parameter, make network efficient more, flexible, reliable.But for the adaptive optical device, each adaptive optical device all needs to possess detection, feedback, regulatory function, and the realization of these functions needs hardware device to have various correlation function modules, and this has increased the cost of adaptive equalization device greatly.Simultaneously, the adaptive optical device only is present in the network in some node, so the feedback regulation of self adaptation device is just regulated at a part of link in connecting, improve the transmission quality of local link, the raising of this local transmission quality may not necessarily be satisfied the transmission quality requirements that whole piece connects.In addition, this optimizing transmission quality based on the transmission plane fails to combine with control plane, has blindness in compensation.
Summary of the invention
Technical problem to be solved by this invention provides in a kind of optical-fiber network the self-adapting transmission control method based on signaling, signaling protocol by expansion, the tunable light device that control transmits the plane compensates the optical signal transmission physical damnification, thereby the signal transmission quality of optical-fiber network is provided at lower cost.
For solving the problems of the technologies described above, it is as follows to the invention provides scheme:
Based on the self-adapting transmission control method of signaling, the node place in described optical-fiber network is provided for tunable light device that the light signal physical damnification is compensated, said method comprising the steps of in a kind of optical-fiber network:
A receives the source node of road construction request, according to the physical topology information of the optical-fiber network of self maintained, calculates and determine the route of described road construction request correspondence;
B utilizes first signaling message, collects the tunable light device information of each node on the described route and the light signal physical damnification information of each section link from source node to destination node;
C, tunable light device information and light signal physical damnification information that destination node is collected according to described first signaling message, assess the signal transmission quality of described route, and judge whether described signal transmission quality satisfies pre-provisioning request: if then set up light path according to described route; Otherwise, enter step D;
D, the tunable light device information that destination node is collected according to described first signaling message judges whether and can make the signal transmission quality of described route satisfy described pre-provisioning request: if then enter step e by regulating tunable light device; Otherwise refuse described road construction request;
E, calculate the regulated value of each tunable light device when described signal transmission quality satisfies described pre-provisioning request, by second signaling message described regulated value is delivered to each node on the described route, light path is set up after described second signaling message arrives source node, wherein, when each node on the described route arrives this node at described second signaling message, extract wherein relevant regulated value with the tunable light device of this node, and the tunable light device of regulating this node in view of the above.
Preferably, in the said method, after setting up described light path, further monitor the signal transmission quality of described light path in destination node, and when the signal transmission quality of described light path does not satisfy predetermined the requirement:
Utilize the 3rd signaling message to collect the tunable light device information of each node on the described light path and the light signal physical damnification information of each section link from destination node to source node;
Tunable light device information and light signal physical damnification information that source node is collected according to described the 3rd signaling message, assess the signal transmission quality of described light path, the regulated value of each tunable light device when signal transmission quality that calculates described light path satisfies pre-provisioning request is delivered to each node on the described route by the 4th signaling message with this regulated value;
When each node on the described light path arrives this node at described the 4th signaling message, extract wherein relevant regulated value with the tunable light device of this node, and the tunable light device of regulating this node in view of the above.
Preferably, in the said method, described tunable light device information comprises the current state value and the adjustable range of tunable light device link corresponding ID, optical fiber ID, wavelength ID, tunable light device, and described light signal physical damnification information comprises optical fiber dispersion information, this link power dampening information, link noise information and the nonlinear fiber coefficient of link information, this link; Described tunable light device comprises dispersion compensator, image intensifer and polarization mode dispersion compensator.
Preferably, in the said method, described optical-fiber network comprises control plane, transmits plane and management plane, and each node comprises routing module, Link Resource Manager module, signalling module and performance estimation module on the described control plane;
Described Link Resource Manager module mutual by with transport layer hardware obtains the tunable light device information at this node place and the light signal physical damnification information of this node place each section link, and the information of being obtained sent to the signalling module of this node;
In the described steps A,, utilize described first signaling message to collect described tunable light device information and light signal physical damnification information further by the signalling module of described source node;
Among described step C and the step D,, assess the signal transmission quality of described route and calculate described regulated value further by the performance estimation module of described destination node;
Among the described step D, further the signalling module by destination node sends described second signaling message.
Preferably, in the said method, among the described step C, assess the signal transmission quality of described route and assess: optical dispersion, signal power, Optical Signal To Noise Ratio and nonlinear phase shift at following physical index.
Preferably, in the said method, among the described step C, further when all physical indexs of described signal transmission quality all satisfy described pre-provisioning request, judge that described quality of evaluation satisfies described pre-provisioning request.
Preferably, in the said method, in the described step e, the regulated value of described each tunable light device when calculating described signal transmission quality and satisfying described pre-provisioning request specifically comprises:
Select first physical index that does not satisfy described pre-provisioning request in the described signal transmission quality;
According to the tunable light device information that described first signaling message is collected, determine first relevant on the described route tunable light device and the current state value and the adjustable range of first tunable light device with described first physical index;
Current state value and adjustable range according to first tunable light device, judging whether can be by regulating first tunable light device, make the physical index of winning satisfy described pre-provisioning request: if then calculate the regulated value of each first tunable light device when described first physical index satisfies described pre-provisioning request.
Preferably, in the said method, in the described step e,, extract regulated value corresponding in second signaling message with the tunable light device of this node further by the Link Resource Manager module of each node on the described route, and the tunable light device of regulating this node in view of the above.
Preferably, in the said method, described first signaling message is the RSVP PATH message of expansion, and described second signaling message and the 3rd signaling message are the RSVP RESV message of expansion, and described the 4th signaling message is the RSVP RESV CONFIREM message of expansion.
From the above as can be seen, in the optical-fiber network provided by the invention based on the self-adapting transmission control method of signaling, tunable light device is introduced into the transmission plane of optical transfer network, by signaling protocol is expanded, utilize the physical damnification information and the adjustable physical compensation device information of each several part in the signaling message collection network, according to these physical messages, performance estimation module by control plane is assessed signal transmission quality, and then judge whether that according to assessment result needs are optimized signal, if needs are arranged, then signal is carried out global optimization according to transmission quality requirements, calculate the regulated quantity of tunable light device, and send to each node by signaling, thus realized the Adaptive Transmission of optical transfer network, improved the transmission quality of light signal.The present invention introduces tunable light device the optical-fiber network performance is regulated, and has improved the road construction success rate and has improved the optical transmission quality.Simultaneously, the present invention has expanded the GMPLS signaling protocol, utilizes distributed signaling to realize the pool adjusting of the tunable light device on the whole optical path, has improved optimizing transmission quality efficient.
Description of drawings
Fig. 1 is the applied environment schematic diagram of self-adapting transmission control method in the described optical-fiber network of the embodiment of the invention;
Fig. 2 is the flow chart of self-adapting transmission control method in the described optical-fiber network of the embodiment of the invention;
Fig. 3 is the signaling process schematic diagram when setting up light path in the embodiment of the invention;
Fig. 4 is the schematic diagram of signal transmission quality assessment in the embodiment of the invention;
Fig. 5 is the signaling process schematic diagram of professional monitoring in the embodiment of the invention.
Embodiment
The present invention is introduced into the transmission plane of optical transfer network with tunable light device, and on the basis of existing optical transfer network control plane, has increased the optical signal transmission quality is carried out the evaluated performance evaluation module; Simultaneously, the present invention also utilizes the signalling module collection related physical information of expansion and the regulated value that sends each tunable light device, thereby has realized the optimization of the signal transmission quality of optical-fiber network.The invention will be further described by specific embodiment below in conjunction with accompanying drawing.
Fig. 1 is the applied environment schematic diagram of self-adapting transmission control method in the described optical-fiber network of present embodiment.Optical-fiber network shown in Figure 1 based on existing ASON architecture, includes three big planes: management plane, control plane and transmission plane.Present embodiment is provided with at each the node place that transmits the plane and is used for tunable light device that the light signal physical damnification is compensated.As shown in Figure 1, this tunable light device specifically can comprise compensating adaptive dispersion device (ADC, Adaptive Dispersion Compensator), image intensifer or DGE (DGE, Dynamic Gain Equalizer) and polarization mode dispersion compensator (PMDC, Polarization Mode Dispersion Compensator) etc.
Among Fig. 1, the control plane node mainly comprises routing module, Link Resource Manager module, signalling module, connection controller and performance estimation module.Wherein, routing module safeguards that (DB Database), and carries out route Wavelength assignment algorithm (RWA, Routing and WavelengthAssignment) and calculates route for the physical topology database of information of optical-fiber network.The Link Resource Manager module functions is the link circuit resource information in the maintaining network, and the guarantee of resource is provided for establishment of connection.Signalling module then is used for creating, safeguards, recovers to be connected with the deletion optical link.Be responsible for coordinating each module and connect controller.
For perception transmits the physical damnification on plane and the relevant information of tunable light device, present embodiment is on the basis of the control plane of ASON, its Link Resource Manager module and signalling module have been done to further expand, make the Link Resource Manager module on the basis of original automatic discovery feature, can obtain the physical damnification information and the tunable light device information of local node by carrying out information interaction with transport layer hardware.After obtaining above-mentioned information, the Link Resource Manager module is given above-mentioned communication the signalling module of this node.Signalling module after the expansion is collected the tunable light device information of each node on the whole route of acquisition and the light signal physical damnification information of link.Simultaneously, present embodiment has also increased performance estimation module in control plane, be used for the signal transmission quality of the information evaluation optical-fiber network collected according to signalling module, calculate the regulated value of each adjustable compensation device, and transfer to signalling module the regulated value that calculates is sent to each node.
In the present embodiment, generalized multiprotocol label switching (GMPLS) protocol (GMPLS by expansion ASON control plane, Generalized Multi-protocol Label Switching) bunch the RSVP (RSVP-TE in based on the traffic engineering expansion, Resource Reservation Protocol-TrafficEngineering) signaling protocol is realized distributed Adaptive Transmission control.In the RSVP-TE signaling protocol, introduce the object that comprises the network physical transmission parameter.
Below please refer to Fig. 2 and Fig. 3 understands present embodiment, wherein, Fig. 2 is the flow chart of the method for the described raising optical-fiber network of present embodiment transmission quality, the signaling process figure when Fig. 3 sets up light path for the RSVP-TE agreement of present embodiment utilization expansion.As shown in Figure 2, the method for the described raising optical-fiber network of present embodiment transmission quality specifically may further comprise the steps:
In this step, similar with prior art, the routing module of source node is being safeguarded the physical topology information in the optical-fiber network.When the user submits a road construction request to webmaster, when requiring to set up source node to the light path of destination node, the routing module of source node is carried out the RWA algorithm according to the physical topology information of the optical-fiber network of self maintained, calculates and determine the route of this road construction request correspondence.In this step, do not consider the physical damnification of link when calculating route, only the source node of determining according to the physical topology information of optical-fiber network arrives the route of destination node.
In this step, RSVP PATH signaling message is expanded, increased physical link state object LINK_INFO in the RSVP PATH message after the expansion, be used to collect the tunable light device information of each node and the light signal physical damnification information of link.Here, described tunable light device information comprises the current state value and the adjustable range of tunable light device link corresponding ID, optical fiber ID, wavelength ID, tunable light device, and described light signal physical damnification information comprises optical fiber dispersion information, this link power dampening information, link noise information and the nonlinear fiber coefficient of link information, this link.RSVP PATH extended message finally arrives destination node via described route from source node, this message is every when reaching a node, the physical parameter information relevant with this node will be joined in the LINK_INFO object, thereby when this message arrives destination node, can form the object string of the physical parameter information that includes each node on the described route in this message.
Step 23, destination node is according to tunable light device information on the described route of collecting in the RSVP PATH extended message and light signal physical damnification information, assess the signal transmission quality of described route, and judge whether described signal transmission quality satisfies pre-provisioning request: if then enter step 24; Otherwise, enter step 25.
In this step, the signalling module of destination node sends to performance estimation module with the object string in the RSVP PATH extended message, request is carried out the transmission quality assessment to whole route, performance estimation module is assessed and assessment result is compared to the pre-provisioning request of signal quality with the destination node place, whether the signal transmission quality of judging this route can satisfy pre-provisioning request: if can satisfy, then destination node is to response message of source node loopback, thereby sets up light path between source, destination node.
Here, for the assessment of signal transmission quality, should assess according to the concrete index request of destination node.As shown in Figure 4, when destination node has corresponding requirements for these three physical indexs of optical dispersion, signal power and Optical Signal To Noise Ratio, need simultaneously these indexs to be assessed.Have only all these physical indexs all satisfy pre-provisioning request (be shown in Fig. 4 " with " relation) time, represent that just signal transmission quality meets the requirements; As long as have arbitrary physical index do not satisfy destination node requirement (be shown in Fig. 4 " or " relation), undesirable with regard to the decision signal transmission quality.Here, concrete physical index is determined by the specific requirement according to destination node, can be comprised the indexs such as chromatic dispersion, signal power, Optical Signal To Noise Ratio and nonlinear phase shift of light signal.
Here, when the signal transmission quality of above-mentioned route does not satisfy predetermined the requirement, can make the related physical index satisfy pre-provisioning request by regulating the tunable light device on the route.For example, when luminous power is lower than the power requirement of destination node, can make the received optical power of destination node increase, to satisfy pre-provisioning request by regulating the image intensifer on the route.Therefore, in step 25, can calculate and judge whether and to make signal transmission quality meet the demands by regulating tunable light device according to the current state value and the adjustable range of the tunable light device on the described route.
If exist on the described route do not meet pre-provisioning request one or more physical indexs (for convenience of description, below this physical index of address is first physical index), can be according to the tunable light device information of collecting, determine the current state value and the adjustable range of the tunable light device relevant on the route (for convenience of description, below this tunable light device of address is first tunable light device) and first tunable light device with first physical index; Current state value and adjustable range according to first tunable light device, judging whether can be by regulating first tunable light device, make the physical index of winning satisfy pre-provisioning request: if then calculate the regulated value of each first tunable light device when described first physical index satisfies pre-provisioning request.
In step 27, RSVP RESV signaling message is expanded, increased the TUN_INFO object in the RSVP RESV message after the expansion, carry the configuration parameter information of the tunable light device that performance estimation module calculates therein.During the every node that reaches on the described route of RSVP RESV extended message, this node will inquire the configuration parameter of the tunable light device relevant with this node from the TUN_INFO object, the Link Resource Manager module by this node is configured relevant tunable light device then.
When described route is carried out optimizing transmission quality, the wherein adjusting of the tunable light device of certain node, meeting has corresponding influence to the adjusting of the tunable light device of other nodes, therefore, can make full use of the adjustable range of tunable light device, a part of tunable light device is wherein carried out in a big way adjusting, to reduce the number that needs the tunable light device of regulating.
From the above as can be seen, present embodiment will transmit the tunable light device on plane and the automatic controlled function of control plane combines, and realize the Adaptive Transmission of optical-fiber network; And by the expansion signaling protocol come physical damnification information and tunable light device information are carried out perception and collection, utilize the performance estimation module that increases newly in the control plane, according to the information that signalling module is collected the regulated quantity of the tunable light device of whole piece route is calculated, realization is to the The global regulation of each tunable light device, thereby reach the purpose of optimizing transmission quality end to end, improved the signal transmission quality of optical-fiber network.
Transmission environment in the optical-fiber network is dynamic change, and for example appearance of newly-built light path, network traffics change, the factors such as state value change of tunable light device all may be brought influence to the signal transmission quality of the light path of previous foundation.Therefore, after setting up light path according to Fig. 2, present embodiment is also further monitored the quality of service on this light path, thereby can in time make a response when quality of service worsens, and further guarantees the signal transmission quality of optical-fiber network.Therefore, present embodiment can further include following steps after step 27 shown in Figure 2 when business is monitored:
Step 28, destination node through performance monitoring modular, the signal transmission quality of the light path of being set up in the monitoring step 27, and when the signal transmission quality of this light path does not satisfy predetermined the requirement: utilize RSVP RESV extended message, collect the tunable light device information of each node on the described light path and the light signal physical damnification information of each section link from destination node to source node;
Please refer to Fig. 5, Figure 5 shows that the signaling process schematic diagram when business is monitored in the present embodiment.Destination node is monitored service condition, when finding that signal quality is undesirable, will generate RSVP RESV extended message, is used to collect the physical parameter information of whole optical path.Here, the RSVPRESV message among the RSVP-TE is expanded, increased the LINK_INFO object, this object is used for collecting the tunable light device information of each node and the light signal physical damnification information of link on the way.
Step 29, the performance estimation module of source node, according to tunable light device information on the described light path of collecting and light signal physical damnification information, assess the signal transmission quality of described light path, calculate the regulated value of each tunable light device when the signal transmission quality of described light path satisfies pre-provisioning request, by RSVP RESV CONFIRM extended message this regulated value is delivered to each node on the described light path by signalling module again; When each node on the described light path arrives this node in described RSVP RESV CONFIRM extended message, extract wherein relevant regulated value with the tunable light device of this node, and the tunable light device of regulating this node in view of the above.
Here, the evaluation process done according to the physical parameter information collected of performance estimation module is the same with the processing of road construction process.In this step, the RSVP RESV Confirm message of RSVP-TE agreement is expanded, increased the TUN_INFO object in this message, this object is used to carry the configuration parameter information from the tunable light device of performance estimation module acquisition.Signalling module is done corresponding processing according to the result of performance estimation module: if can make signal transmission quality meet the demands by regulating tunable light device, then signalling module transmits the configuration parameter information of each tunable light device via described light path by signaling message; If can not make signal transmission quality meet the demands by regulating tunable light device, can be left intact this moment.
Destination node continues the signal quality of the described light path of monitoring, when finding that signal quality does not satisfy predetermined the requirement, repeats above step 28～29.
In sum, the present invention transmits the tunable light device of having introduced adjustable physical compensation in the plane at optical-fiber network, on this hardware foundation, utilize the physical damnification information and the adjustable physical compensation device information of each several part in the signaling collection network, and according to these physical messages, performance estimation module by control plane is assessed signal transmission quality, and then judge whether that according to assessment result needs are optimized signal, if have need according to transmission quality requirements signal is carried out global optimization, calculate the regulated quantity of tunable light device, and send to each node by signaling, thereby realized the Adaptive Transmission of optical transfer network, improved the transmission quality of light signal.
The above only is embodiments of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
- In the optical-fiber network based on the self-adapting transmission control method of signaling, it is characterized in that the node place in described optical-fiber network is provided for tunable light device that the light signal physical damnification is compensated, said method comprising the steps of:A receives the source node of road construction request, according to the physical topology information of the optical-fiber network of self maintained, calculates and determine the route of described road construction request correspondence;B utilizes first signaling message, collects the tunable light device information of each node on the described route and the light signal physical damnification information of each section link from source node to destination node;C, tunable light device information and light signal physical damnification information that destination node is collected according to described first signaling message, assess the signal transmission quality of described route, and judge whether described signal transmission quality satisfies pre-provisioning request: if then set up light path according to described route; Otherwise, enter step D;D, the tunable light device information that destination node is collected according to described first signaling message judges whether and can make the signal transmission quality of described route satisfy described pre-provisioning request: if then enter step e by regulating tunable light device; Otherwise refuse described road construction request;E, calculate the regulated value of each tunable light device when described signal transmission quality satisfies described pre-provisioning request, by second signaling message described regulated value is delivered to each node on the described route, light path is set up after described second signaling message arrives source node, wherein, when each node on the described route arrives this node at described second signaling message, extract wherein relevant regulated value with the tunable light device of this node, and the tunable light device of regulating this node in view of the above.
- 2. the method for claim 1 is characterized in that, after setting up described light path, further monitors the signal transmission quality of described light path in destination node, and when the signal transmission quality of described light path does not satisfy predetermined the requirement:Utilize the 3rd signaling message to collect the tunable light device information of each node on the described light path and the light signal physical damnification information of each section link from destination node to source node;Tunable light device information and light signal physical damnification information that source node is collected according to described the 3rd signaling message, assess the signal transmission quality of described light path, the regulated value of each tunable light device when signal transmission quality that calculates described light path satisfies pre-provisioning request is delivered to each node on the described route by the 4th signaling message with this regulated value;When each node on the described light path arrives this node at described the 4th signaling message, extract wherein relevant regulated value with the tunable light device of this node, and the tunable light device of regulating this node in view of the above.
- 3. method as claimed in claim 2, it is characterized in that, described tunable light device information comprises the current state value and the adjustable range of tunable light device link corresponding ID, optical fiber ID, wavelength ID, tunable light device, and described light signal physical damnification information comprises optical fiber dispersion information, this link power dampening information, link noise information and the nonlinear fiber coefficient of link information, this link; Described tunable light device comprises dispersion compensator, image intensifer and polarization mode dispersion compensator.
- 4. method as claimed in claim 3 is characterized in that, described optical-fiber network comprises control plane, transmits plane and management plane, and each node comprises routing module, Link Resource Manager module, signalling module and performance estimation module on the described control plane;Described Link Resource Manager module mutual by with transport layer hardware obtains the tunable light device information at this node place and the light signal physical damnification information of this node place each section link, and the information of being obtained sent to the signalling module of this node;In the described steps A,, utilize described first signaling message to collect described tunable light device information and light signal physical damnification information further by the signalling module of described source node;Among described step C and the step D,, assess the signal transmission quality of described route and calculate described regulated value further by the performance estimation module of described destination node;Among the described step D, further the signalling module by destination node sends described second signaling message.
- 5. method as claimed in claim 4 is characterized in that, among the described step C, assesses the signal transmission quality of described route and assesses at following physical index: optical dispersion, signal power, Optical Signal To Noise Ratio and nonlinear phase shift.
- 6. method as claimed in claim 5 is characterized in that, among the described step C, further when all physical indexs of described signal transmission quality all satisfy described pre-provisioning request, judges that described quality of evaluation satisfies described pre-provisioning request.
- 7. method as claimed in claim 6 is characterized in that, in the described step e, the regulated value of described each tunable light device when calculating described signal transmission quality and satisfying described pre-provisioning request specifically comprises:Select first physical index that does not satisfy described pre-provisioning request in the described signal transmission quality;According to the tunable light device information that described first signaling message is collected, determine first relevant on the described route tunable light device and the current state value and the adjustable range of first tunable light device with described first physical index;Current state value and adjustable range according to first tunable light device, judging whether can be by regulating first tunable light device, make the physical index of winning satisfy described pre-provisioning request: if then calculate the regulated value of each first tunable light device when described first physical index satisfies described pre-provisioning request.
- 8. method as claimed in claim 7, it is characterized in that, in the described step e, further by the Link Resource Manager module of each node on the described route, extract regulated value corresponding in second signaling message with the tunable light device of this node, and the tunable light device of regulating this node in view of the above.
- 9. method as claimed in claim 2, it is characterized in that, described first signaling message is the RSVPPATH message of expansion, and described second signaling message and the 3rd signaling message are the RSVP RESV message of expansion, and described the 4th signaling message is the RSVP RESV CONFIREM message of expansion.
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| CN102710324A (en) * | 2012-05-16 | 2012-10-03 | 中兴通讯股份有限公司 | Method for processing messages in intelligent optical network and optical line equipment |
| CN103530257A (en) * | 2013-10-18 | 2014-01-22 | 浪潮电子信息产业股份有限公司 | SAS signal quality optimization method of dynamic self-adapting transmission route |
| CN105122683A (en) * | 2013-06-25 | 2015-12-02 | 雷声公司 | Free-space optical mesh network |
| CN105471732A (en) * | 2015-11-24 | 2016-04-06 | 河北工程大学 | SDN controller in optical network and physical damage perception RSA method |
| CN105915643A (en) * | 2016-06-14 | 2016-08-31 | 烽火通信科技股份有限公司 | Method for implementing signaling expansion by using electronic relay for establishing cross-layer channel in WSON (Wavelength Switched Optical Network) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100531117C (en) * | 2005-06-04 | 2009-08-19 | 华为技术有限公司 | Information transmission method of optical network of automatic exchange |
| FR2893798B1 (en) * | 2005-11-21 | 2008-01-04 | Alcatel Sa | DEVICE AND METHOD FOR GENERATING PRIORITY-PRESERVED CONSISTENT BURSTS FOR EQUIPMENT IN A GUSTED SWITCHING COMMUNICATION NETWORK |
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Cited By (9)
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| CN102348138A (en) * | 2011-11-10 | 2012-02-08 | 北京邮电大学 | Collision avoidance wavelength assignment method based on PCE (Personal Computer Equipment) |
| CN102710324A (en) * | 2012-05-16 | 2012-10-03 | 中兴通讯股份有限公司 | Method for processing messages in intelligent optical network and optical line equipment |
| CN105122683A (en) * | 2013-06-25 | 2015-12-02 | 雷声公司 | Free-space optical mesh network |
| CN103530257A (en) * | 2013-10-18 | 2014-01-22 | 浪潮电子信息产业股份有限公司 | SAS signal quality optimization method of dynamic self-adapting transmission route |
| CN103530257B (en) * | 2013-10-18 | 2017-01-18 | 浪潮电子信息产业股份有限公司 | SAS signal quality optimization method of dynamic self-adapting transmission route |
| CN105471732A (en) * | 2015-11-24 | 2016-04-06 | 河北工程大学 | SDN controller in optical network and physical damage perception RSA method |
| CN105471732B (en) * | 2015-11-24 | 2018-05-08 | 河北工程大学 | A kind of RSA methods that SDN controllers and physical damnification in optical-fiber network perceive |
| CN105915643A (en) * | 2016-06-14 | 2016-08-31 | 烽火通信科技股份有限公司 | Method for implementing signaling expansion by using electronic relay for establishing cross-layer channel in WSON (Wavelength Switched Optical Network) |
| CN105915643B (en) * | 2016-06-14 | 2018-11-30 | 烽火通信科技股份有限公司 | The implementation method of the signaling extensions in cross-layer channel is established in WSON using electricity relaying |
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| CN101415131B (en) | 2011-05-18 |
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