WO2007121651A1

WO2007121651A1 - A connection performance optimize method of the adaptive optical transmission network and device thereof

Info

Publication number: WO2007121651A1
Application number: PCT/CN2007/000654
Authority: WO
Inventors: Jiaying Wang; Jijun Zhao
Original assignee: Zte Corporation
Priority date: 2006-04-21
Filing date: 2007-03-01
Publication date: 2007-11-01
Also published as: CN101060420A; CN100531050C

Abstract

An adaptive performance optimize device of the optical switch network and method thereof, when the connection is set up, it can forecast the transmission performance, and the device includes: a route controller for selecting the route and transmitting the link information, a link analyzer for analyzing the transmission performance and the optical characteristic of the received link information in order to determine the validity of the route, and a connection controller for setting up the connection with the above effective route. The method includes: selecting the route in answer to the connection request information and transmitting the link information, analyzing the transmission performance and the optical characteristic of the above link information in order to determine the validity of the route, and setting up the connection with the effective route. Compared with the prior art, because the said device and method of the present invention forecast the transmission performance when the new connection is set up, it gains the advancement in the course of the re-route and setting up the connection, and improves the validity of re-route and connection of the network, and ensures the high quality signal transmission in the connection being set up.

Description

Adaptive optical transport network connection performance optimization method and device

Technical field

The present invention relates to a transport network technology in the field of communication equipment, and in particular, to an adaptive connection performance optimization method and apparatus for an optical switch network.

Background technique

The development of the transmission network presents an intelligent development trend. Currently, the concept of a transport network system with intelligent features includes an intelligent switched optical network (ASON), an optical burst switching (OBS) network, and an optical packet switching (OPS) network. The implementation of these network systems will provide a service platform for future dynamic data services. Among them, the intelligent switched optical network is in the process of gradually commercializing.

High-capacity optical transmission and cross-connect related technologies provide a physical basis for the realization of intelligent networks. At present, long-distance and ultra-long-distance optical transmission technologies have been developed. The transmission capacity of practical devices can reach the order of Tbps, and the transmission distance of non-electrical relays is continuously extended; 40Gbps time division multiplexing (TDM) processing circuits have appeared; Tbps Class switching devices have also emerged; large-capacity optical cross-devices and devices can exchange signals between up to thousands of wavelength channels. All of these technologies create the underlying conditions for wide-area routing and free exchange of traffic streams with a large number of channels.

The intelligence of the device also depends on the advancement of optics and signal processing devices. There are many dynamic components and circuits present, both optical and electronic, and some devices can be used for higher signal rates. Examples include dynamic gain equalization devices (DGE, ITU-T G.671), dynamic polarization mode dispersion compensation devices (PMDC, ITU-T G.666), dynamic dispersion compensation devices (ADC, ITU-T G.667), and forward Error correction technology ( _FEC , ITU-T G.709, G.975), etc., which enables the transmission, transmission and reception performance of optical signals to be adjusted and improved. At the same time, as a basis for adjusting the optical performance of the transmission line, not only the overhead of standard system signals, such as the Synchronous Digital Hierarchy (SDH) signal overhead defined by ITU-T G.707, or the optical transmission specified by ITU-T G.709, can be used. Network (OTN) signal overhead, optical performance detection indicators (ITU-T G.697) can also be used.

At present, the standard automatic switching optical network equipment is a kind of transmission equipment with initial intelligence, which can automatically establish a connection for end-to-end services, and meet the needs of operators to quickly open services. In automatic Based on the connection establishment function, it also forms an attractive fault recovery capability. With the core purpose of automatic connection establishment, it has been in ITU-T G.8080 and G. in architecture, data communication network, distributed call and connection management, automatic resource discovery, route recovery/connection admission control, and control plane management. Standardized in the 771x series of Recommendations.

The general architecture of this type of intelligent device is shown in Figure 1. It mainly includes the transport plane device 1, the control plane device 2, the management plane device 3, and the management and control information channels (such as the Integrated Data Communication Network (DCN) and embedded Control 1⁄2'H Words (ECC)) and connect by related information interfaces. Taking the interface flag in FIG. 1 as an example, a graphical user interface (GUI) completes management and control interaction between the user and the network; a control management interface (CMI) implements information interaction between the network element control function unit and the management function unit; The interface (CTI) performs the interaction between the control function unit and the transport plane, and mainly performs the delivery of the transport plane command by the control plane; the management information interface (S) implements the information interaction between the network element management function unit and the transport plane, and performs related setting commands. The delivery and delivery of plane performance and fault alarms are reported.

At present, the problem with this standardized device is that in order to provide a high shield service, it is necessary to ensure high quality signal transmission on the established connection. First, the connection established due to transmission restrictions must be avoided in the connection establishment process. Secondly, the transmission performance on the established connection should be changed to suit the needs of different routing conditions. Third, in the transmission channel. When performance is degraded and cannot be recovered, rerouting can be performed automatically to establish a new reliable connection. Due to the needs of these three aspects, the future transmission equipment needs to have the following features: The transmission function is adaptive, with optical performance detection and dynamic control functions in the transmission plane; and coordinated with the control plane routing and connection establishment process. The transmission performance can be predicted before a new connection is established, and the transmission performance can be adjusted after the connection is established. In the currently disclosed equipment standards and utility equipment, none of the above functions are available. Summary of the invention

The technical problem to be solved by the present invention is to provide an optical switching network adaptive connection performance optimization device and method, which overcomes the shortcomings of the prior art that the performance of the transmission plane is insufficiently evaluated and controlled during the connection establishment process.

The optical performance network adaptive performance optimization device of the present invention comprises: a routing controller 22, configured to perform routing, and send link information; a link analyzer 23, configured to analyze transmission performance and optical characteristics of the received link information, to determine validity of the route; a connection controller 24, Used to establish a connection to the above valid route.

The optical switching network adaptive performance optimization device of the present invention further includes: a transmission controller, configured to receive the link information, and perform signal transmission via the established route; and a performance monitor, configured to transmit signals The routing node performs performance monitoring; a performance analyzer is configured to determine whether the node is adjustable; wherein the transfer controller adjusts the node that can be adjusted.

The optical switching network adaptive performance optimization device of the present invention further includes: a signaling processor, configured to receive a connection request and generate connection request information, and send link information to the transmission controller.

The optical switching network adaptive performance optimization device of the present invention further includes: a link resource manager, configured to provide link information, and update the link information.

The routing controller performs routing according to the connection request information sent by the signaling processor.

The performance monitor further includes: an input signal performance monitoring unit and/or an output signal performance monitoring unit, wherein the performance of the node is monitored according to the monitoring signal or the service signal. The performance analyzer compares the monitored performance to the node rated performance to determine the nodes and adjustments that need to be adjusted.

The invention also relates to an adaptive connection performance optimization method, comprising: Step 1: responding to connection request information for routing and transmitting link information; Step 2: analyzing transmission performance and optical characteristics of the link information to determine a route Validity; Step 3: Establish a connection to the above valid route.

An adaptive connection performance optimization method according to the present invention further includes: Step 4: performing signal transmission via the established route; Step 5: performing performance monitoring on the routing node of the signal transmission; performing steps when the node performance is abnormal 6; otherwise continue to step 4; Step 6: Determine whether the above nodes can be adjusted; Step 7. Adjust the nodes that can be adjusted; After adjustment, return to step 5.

In step 1, if there is a selectable idle route, perform step 2: Otherwise, perform step 8: feedback route establishment failure message.

In step 2, if the route is valid, go to step 3, otherwise return to step 1. Wherein, in step 5: If the performance monitoring result is that the node performance is normal, return to step four, otherwise perform step 6.

Wherein, in step 6: If the node can implement the adjustment, perform step seven, otherwise return to step one. By adopting the device and method of the present invention, compared with the prior art, since the transmission performance is predicted when establishing a new connection, the progress of the rerouting and connection establishment process is improved, and the network rerouting and connection are improved. Effectiveness, ensuring high-constrained signal transmission over established connections. BRIEF abstract

1 is a structural diagram of an apparatus for adaptive performance optimization of an optical switching network according to the present invention;

Figure 2 is a structural view of a conveying plane device;

Figure 3 is a structural view of the control plane device;

4 is a flowchart of an adaptive performance optimization method for an optical switching network according to the present invention;

FIG. 5 is a schematic diagram of a connection request establishment process in a network application environment;

Figure 6 is a schematic view of a specific application of the present invention;

Figure 7 is a specific embodiment of the present invention;

Figure 8 is another embodiment of the present invention.

Preferred embodiment of the invention

The embodiments of the technical solutions of the present invention are further described in detail below with reference to the accompanying drawings.

1 is a structural diagram of an adaptive performance optimization device for an optical switching network according to the present invention. The optical switching network adaptive performance optimization device includes a transport plane device 1, a control plane device 2, a management plane device 3, and a management and control information channel (for example: DCN and ECC) and are connected by related information interfaces. The graphical user interface (GUI) completes the management and control of the interaction between the user and the network. Since the intelligent switched optical network (ASON) has the client initiation and operation functions, the GUI of the customer management system is included; the control management interface (CMI) implements the control plane device 2 Information interaction with the management plane device 3; control transmission interface (CTI) execution of the control plane device 2 and the transfer plane device 1 The interaction, the main execution control plane device 2 issues the delivery of the command of the transport plane device 1; the management information interface (S) realizes the information interaction between the management plane device 3 and the transport plane device 1, and performs the delivery and transmission plane performance of the related setting commands and The fault alarm is reported.

Next, the conveying plane device 1 will be described in detail with reference to Fig. 2 . Transfer plane device 1 includes

5 a transfer controller 14, a performance monitor 12, a performance analyzer 13 and a transmit signal processing portion 11, wherein the performance monitor 12 includes an input signal performance monitoring unit 121 and/or an output signal performance monitoring unit 122. The transmit signal processing section 11 is configured to parse and adapt the transmitted signal of the network element device, and includes a core signal processing function of a conventional terminal device, or a line device, or a switching device, for example, at a line amplifying node, by an amplifier. And related drive and control circuit components;

For example, at the optical cross node, it is composed of an optical cross unit and related driving and control circuits; for example, a circuit switching node is composed of a time division multiplexing (TDM) cross unit or a space time division (STS) switching unit and a related driving circuit. The performance monitor 12 is a device for monitoring the input and/or output signals of the network element device, and performs performance monitoring on the node according to the monitoring signal or the service signal, and extracts the monitoring result T. And configuring the monitoring function device according to the service transmitted by the device, for example, in the optical channel layer

5 ( OCH ) detects one or more optical performance related devices such as bit error rate, power, optical signal to noise ratio, center wavelength, dispersion, etc.; for example, in SDH-n, Ethernet, OTU-k/ODU-k A device that detects overhead bytes reflecting its signal quality under service type conditions. The performance analyzer 13 is a device that judges the monitoring results and implements a control strategy, and has computational and logical processing capabilities that determine whether the nodes can be adjusted. Accordingly, the embodiment shown in FIG. 8 in this specification reflects

The method of judging the optical power and implementing the gain optimization, the embodiment shown in Fig. 9 reflects the method of judging the signal quality and implementing the dispersion optimization. The transfer controller 14 receives the link information and transmits the signal via the established route, and adjusts the node that can perform the adjustment, and the sent control signal C includes cross-connection/line switching (light cross or Electrical crossover) and optical performance adjustments (eg modulation related features, gain/attenuation, wavelength, power, dispersion, reception)

: Machine related properties, etc.) Control signals. The transfer controller 14 performs information exchange with the management plane device 3 through the management information interface S, and performs information interaction with the control plane device 2 through the control transfer interface (CTI).

The control plane device 2 will be described in detail below with reference to FIG. The control plane device 2 includes a routing controller 22, a link analyzer 23, a connection controller 24, a link resource manager 25, and Signaling processor 21. The signaling processor 21 receives the connection request and generates connection request information, and transmits link information to the transmission controller 14. It provides relevant link information for routing of the routing controller 22 by receiving a response to the connection request signaling information from the management and control information channel (DCN), and obtaining information related to the connection request by parsing the signaling information. , Simultaneously

; Receive connection status information fed back to controller 24 and provide feedback to the customer. The routing controller 22 receives the connection request information from the signaling processor 21 and performs routing, and the routing controller 22 also exchanges information between the peer routing controllers to maintain the routing information of the entire network; meanwhile, the routing controller also queries the chain. The link information through which the connection route obtained by the path resource manager 25 passes is sent to the connection controller, and the operation of connecting to the transport plane device is performed. Link Analyzer 23 connection routing required for connection request

The passed link information is analyzed and evaluated for transmission performance and optical characteristics to determine the enforceability of the connection route from the performance side. The connection controller 24 establishes a connection to the above-executable route and is responsible for managing and monitoring the establishment and operation of the connection by coordinating the peer or lower connection controller 24, the routing controller 22, and the link resource manager 25. And modify the established connection parameters. Link resource manager 25 provides link information to routing controller 22 and links

; Information is updated and maintained. In addition to all the functions of the link information manager (LRMJTU-T G.8080), the link resource manager 25 should include the optical layer transmission performance of the link (generally in the network element and the transmission segment). Signal transfer feature form to express).

FIG. 4 is a flowchart of an adaptive performance optimization method for an optical switching network according to the present invention.

Step S100: Send a connection request, and process the connection request to generate connection request information. The occurrence of a connection I request may include the following cases: a connection request is made from the client device via the UNI interface; a connection request is made from the network management system via the CMI interface; and a connection request is made from the DCN via the I interface from the remote network element. In the above cases, the signaling processor 21 parses the connection request signaling message according to the used protocol (for example, the GMPLS protocol, or uses other proprietary protocols), and obtains the connection request information;

Step S200: determining whether there is an idle resource, and performing routing in response to the connection request information, and sending the link information; if there is a selectable idle resource, selecting a route that is not confirmed to be invalid, and then proceeds to step S300; if not exists When the route that can be used, step S900 is performed. Routing controller 22 selects routes based on available portions of the idle resources, which are present in link resource manager 25, an embodiment of which is an automatically switched optical network standard (ITU-T) G.8080) The resource manager and related auxiliary devices defined by the device need to use a certain signaling protocol to periodically update synchronously across the entire network, so that the database of any network element device in the network includes the entire network. Resource status information;

Step S300: Determine whether the selected route is valid, and analyze the transmission of the link information.

The performance and optical characteristics are determined to determine the validity of the route; the selected link is evaluated according to the optical performance transfer characteristics of the network element and the route, and after calculation, it is found that the deterioration degree of the received signal quality exceeds a predetermined threshold, indicating that the If the selected route is invalid, the process returns to step S200; instead, after the calculation, it is found that the deterioration degree of the received signal quality will not exceed the predetermined threshold, indicating that the selected route prediction is valid, and the process proceeds to step S400; the link analyzer 23 According to the optical performance of the network element and the transmission segment

» Feature evaluation selected route, the optical performance transfer feature of any network element or transmission segment of the whole network, that is, the relationship between the input port signal attribute and the output port signal attribute, reflecting the performance degradation of the signal after passing through the network element. Or the degree of improvement is an inherent feature of the network element. Although it may change due to changes in the working state of the device in the network element node, the general characteristics of the network element may be pre-tested or estimated based on the rated working point, or The method of maximizing the degradation performance, the solution

: theoretical means such as analysis or statistics to summarize its transfer characteristics (such as the optical transfer characteristics of the network element or transmission segment specified by ITU-T G.otf, including the gain characteristics of the optical amplifier link, the noise characteristics gradually accumulated along the transmission line, and the dispersion The accumulation of its slope, the transfer function of the clock or signal, the nonlinear transfer function of the fiber, etc.). The transfer characteristics of these network elements or transport segments should be stored in the link resource manager 25 and can be updated as the network changes. The link analyzer 23 passes according to the full route.

'The physical properties of the network element and the transmission segment are calculated by cascading the signal changes of the service signal from the routing input point to the routing output point, and the evaluation of the validity of the route is completed;

Step S400: Establish a connection to the valid route according to the signaling protocol; the connection controller 24 establishes a connection through the selected route through the signaling protocol. The process of connection establishment may follow a general signaling protocol, such as a connection signaling procedure as defined by ITU-T G.7713.1 or G.7713.2. The node reached by the connection signaling needs to be parsed by the signaling processor 21 of the control plane device and then transmitted to the connection controller 24 of the node, and the connection controller 24 calculates the input and output port resource assignment requirements according to the node switching model. And then enter the transfer controller 14 via the Control Transmission Interface (CTI) interface to control the occurrence of cross-switching;

Step S500: performing signal transmission via the established route, and may feedback that the connection is successful and/or The connection hold message; the transfer controller 14 initiates the transmission of the signal. The signal sent may be a traffic signal or a temporary detection signal for the purpose of verifying link performance and integrity. If it is only a detection signal, it is necessary to replace the result of the step S600 with the service signal under normal conditions. When the sending end node continues to work normally, it can feed back the connection success and/or the connection hold message;

Step S600: determining whether the performance of the node is normal, and performing real-time performance monitoring on the routing node of the signal to determine whether the performance of the node is normal. When the performance of the performance is normal, the performance of the node is normal, and the performance is abnormal, and then S700 is executed; The performance detector 12 is configured to perform real-time performance detection on the node through which the signal passes. When performing real-time performance detection, the detection signal of the transmitting end may be used, or the service signal of the transmitting end may be used, and the detected information may be out-of-band or It is in-band; it can detect signal analog features (such as power, wavelength, signal-to-noise ratio), as well as digital features of the signal, such as bit error rate; it can directly sample the signal waveform, or extract the specific service signal transmitted. Overhead bytes, such as Bl, B2, etc. of the Synchronous Digital Hierarchy (SDH) signal, and frame structure performance monitoring bytes such as OUTk, ODUk of the Optical Transport Network (OTN) signal;

Step S700: determining whether the node is adjustable to determine a route adjustment object; and the performance analyzer 13 determines a route adjustment object. The measured performance status is compared to the rated performance status of the device during analysis to determine the nodes and adjustments that need to be adjusted in the routing. When it is found that the control of all the adjusted objects cannot achieve signal quality improvement, it indicates that the currently used route has been invalid, and returns to step S200; otherwise, it proceeds to step S800; when the signal quality cannot be improved, unless the system needs to maintain the current degradation. The signal can be returned to step S500 (not shown) when the signal continues to serve;

Step S800: Adjusting the node that can perform the adjustment; the transfer controller 14 controls the adjustable node in the link, and gradually improves the signal quality according to a predetermined optimization principle and a control algorithm, and after completing the adjustment, proceeds to step S600. When an adjustment cannot achieve the optimization goal, the general engineering optimization method may be used to adjust step by step, or iteratively adjust, so that the system performance gradually approaches the ideal range; Step S900: feedback route establishment failure message; signaling processor 21 feedback route establishment Failure message. Through the above process, the establishment failure occurs when no connection is found during the connection establishment process and there is no valid resource. FIG. 5 is a schematic diagram of a connection request establishment process in a network application environment, mainly referring to steps S200, S300, S400, and S700 in FIG. 4, for illustrating changes in routing in different situations. In a network domain, the control plane device and the transport plane device are connected through a Control Transmission Interface (CTI). In the figure, the link resource manager 25 includes resource information of all nodes in the network domain and node and transmission segment transfer characteristics. It is connected to the transport plane device via the Control Transmission Interface (CTI) and can be updated when the transport plane node changes physically. When there is a connection request from the source node client device a to the target node client device z, route 1 in the example of FIG. 6 represents a route based on idle resource selection, passing through nodes NA, NB, NZ. When the performance of the connection under the routing condition is predicted by calling the transfer feature in the link resource manager 25 in step 3 of the above method, and the route is found to be unavailable, the route needs to be recalculated until the performance prediction result is qualified, for example. A new route (route 2) through the nodes NA, NC, ND, NZ is obtained. Then, the source node client initiates the request S1 to the connection, and after the control plane device and the integrated data communication network (DCN) reach the destination node, returns the connection request confirmation S2, and finally sends the connection plane device corresponding to each node of the NA, NC, ND, and NZ. The connection establishment control S3 completes the establishment process of the entire connection. During the operation, when the connection has unrecoverable performance degradation and exceeds the threshold, the route needs to be recalculated. Assume that a new route that passes the performance monitoring result passes through the NA, NF, NC, ND, and NZ nodes (Route 3), and the source node client is required to initiate the connection/change request S4 again, through the control plane device and the integrated data communication network ( After reaching the destination node, DCN returns the connection request/change confirmation S5, and finally sends a connection establishment control S3 to the transmission plane devices corresponding to the respective nodes of NA, F, NC, ND, and NZ, completing the establishment process of the entire connection, for example, in the first construction. Under the post-demolition strategy, especially the connection control of three nodes of NA, NF and NC.

Figure 6 is a schematic diagram of an application under specific routing conditions, mainly involving step S300 in Figure 4. One or more electrical regeneration nodes N1, one or more non-electrical regeneration nodes N2, and one or more fiber segments may exist in the route from a to z? . In the optical transmission section 1 and the optical transmission section 2, it is necessary to use the optical transition feature cascade of each node and the fiber section to calculate the signal evolution of the entire transmission section. When passing through an electrical regeneration node, the transfer characteristics of the electrical signal are required. The difference between the electrical regeneration node and the electroless regeneration node is recorded in the link resource manager 25.

FIG. 7 is a schematic diagram of an optical switching network adaptive performance optimization device under specific routing conditions, which mainly relates to steps S500, S600, S700, and S800 in FIG. 4. Node device uses dimmable amplification 00654

(TOA) and a dimmable attenuation (TOL) device, or a dynamic gain equalization device (DGE) as an embodiment of the transmission signal processing portion 11. There is a monitoring signal T interface and a control signal C interface at the optical processing unit of each node. An optical performance monitor (OPM) is used as an embodiment of the performance monitor 12 to detect at an interface T of one or more node devices. Commercial Optical Performance Monitors (OPMs) perform power monitoring, wavelength monitoring, and optical signal-to-noise ratio monitoring. The adaptive control system A connected to the OPM and the node optical processing device interface C includes at least the performance analyzer 13 shown in FIGS. 2 and 3, the transfer controller 14, the control plane device 2, and the control information channel (DCN). . When the transmitting end (X1,...,XN) signal is continuously transmitted, when it is detected by the optical performance detector (OPM) that the signal power distribution along the entire transmission line deviates from normal, the adaptive system A gradually adjusts the dimming along the line. Amplification (TOA), dimmable attenuation (TOL) devices, and/or dynamic gain equalization (DGE) devices bring the signal power distribution closer to normal, abandoning the adjustment of the line only if the signal cannot be normal after adjustment The other routes are selected by the routing controller 22 included in the control plane device within the adaptive system A shown in the figure.

Figure 8 is an application example of signal quality control under specific routing conditions, mainly involving steps S500, S600, S700, and S800 in Figure 4, and an apparatus and system embodiment for implementing signal spectrum domain control optimization. The transmitting end node device has a variable power laser L and a variable performance modulation device (MOD), and the receiving end node has an adaptive dispersion adjusting device (ADC). The transmitting end includes a combiner M, a laser source L, a modulator (MOD), a driver (DRI), and a power controller P, which is an embodiment of the transmission signal processing section 11. Includes splitter D at the receiving end, adaptive dispersion compensation

(ADC), Receiver R, is also an embodiment of the transmit signal processing portion. There is a detection signal T interface and a control signal C interface at the optical processing device of each node. Using the signal quality detector Q as an embodiment of the performance detector 12, the interface T of the receiving end node device performs the detection. Commercial signal quality detectors can be meters or chips that can perform error detection or Q value detection. Adaptive control system A connected to Q and node optical processing device interface C, at least

> Performance analyzer 13 with the embodiment shown in Figures 2 and 3, transfer controller 14, control plane device 2, and control information channel (DCN). When the signal of the transmitting end light source L is continuously transmitted, when the quality of the acknowledgment signal is deviated from the normal teaching by the signal quality detector Q, the power of the transmitting end laser, the driving signal of the modulator, or the modulation mode are gradually adjusted by the adaptive system A, And / or gradually adjust the receiving end adaptive dispersion compensation (ADC) to make the signal quality of the receiving end approach normal, only to make the signal normal after adjusting, abandon the adjustment of this line, as shown in the figure The routing controller 22 in the control plane device within the adaptation system A selects other routes. The embodiment of the present invention is a exemplified embodiment of the present invention, and those skilled in the art can make modifications and changes to the present invention without departing from the spirit and scope of the invention.

Industrial applicability

The device and method of the present invention adopts a prediction of transmission performance when establishing a new connection, and advances in the rerouting and connection establishment process, improving the effectiveness of network rerouting and connection; before establishing a new connection The transmission performance is predicted, and the transmission performance can be adjusted after the connection is established, ensuring high-quality signal transmission on the established connection.

Claims

Claim

An adaptive performance optimization device for an optical switching network, which predicts transmission performance when establishing a connection, and is characterized by:

a routing controller, configured to perform routing, and send link information;

a link analyzer for analyzing transmission performance and optical characteristics of the received link information to determine the validity of the route;

A connection controller is used to establish a connection to the above valid route.

2. The optical switching network adaptive performance optimization device according to claim 1, further comprising:

a transmission controller, configured to receive the link information, and perform signal transmission via the established route;

a performance monitor for performing performance monitoring on a routing node for signal transmission;

a performance analyzer, configured to determine whether the node is adjustable;

Wherein, the transfer controller adjusts the node that can be adjusted.

;

3. The optical switching network adaptive performance optimization device according to claim 2, further comprising:

a signaling processor for receiving a connection request and generating connection request information, and transmitting link information to the transmission controller.

The optical performance network adaptive performance optimization device according to claim 1 or 2, wherein the method further comprises:

A link resource manager is configured to provide link information and update the link information.

5. The optical switching network adaptive performance optimization device according to claim 3, wherein the routing controller performs routing according to connection request information sent by the signaling processor.

6. The optical switching network adaptive performance optimization device according to claim 2, wherein the performance monitor further comprises:

An input signal performance monitoring unit and/or an output signal performance monitoring unit that monitors performance of the node based on the monitoring signal or the traffic signal.

7. The optical switching network adaptive performance optimization device according to claim 2, wherein the performance analyzer compares the monitored performance with a node rated performance to determine a node and an adjustment amount that need to be adjusted. .

8. An adaptive performance optimization method for an optical switching network, which predicts transmission performance when establishing a connection, and is characterized by:

Step 1: responding to the connection request information to perform routing and sending link information. Step 2: analyzing the transmission performance and optical characteristics of the link information to determine the validity of the route. Step 3: Establish a connection to the valid route.

9. The method for optimizing an adaptive performance of an optical switching network according to claim 8, wherein the method further comprises:

Step 4: transmitting signals through the established route;

Step 5: Perform performance monitoring on the routing node of the signal transmission; perform step 6 when the node performance is abnormal; otherwise continue to step 4;

Step 6: determining whether the node is adjustable;

: Step 7. Adjust the nodes that can be adjusted. After adjustment, return to step 5.

The method for optimizing the adaptive performance of the optical switching network according to claim 8, wherein in step 1, if there is a selectable idle route, step 2 is performed: otherwise, step 8: feedback routing establishment failure message is performed.

11. The adaptive performance optimization method for an optical switching network according to claim 8, wherein in step 2: if the route is valid, step 3 is performed, otherwise step 1 is returned.

12. The adaptive performance optimization method for an optical switching network according to claim 9, wherein in step 5: if the performance monitoring result is that the node performance is normal, return to step four, otherwise step 6 is performed.

The method for optimizing the adaptive performance of the optical switching network according to claim 9 or 12, wherein in step 6: if the node can implement the adjustment, step 7 is performed, otherwise step 1 is returned.