CN113922916A

CN113922916A - ROADM all-optical network planning method and device based on WSON function

Info

Publication number: CN113922916A
Application number: CN202111180903.9A
Authority: CN
Inventors: 刘杰; 叶胤; 江树臻; 刘东文; 陈烈辉; 张宇; 赵春华
Original assignee: Guangdong Planning and Designing Institute of Telecommunications Co Ltd
Current assignee: Guangdong Planning and Designing Institute of Telecommunications Co Ltd
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2022-01-11
Anticipated expiration: 2041-10-11
Also published as: CN113922916B

Abstract

The invention discloses a ROADM all-optical network planning method and a device based on a WSON function, wherein the method comprises the following steps: the method comprises the steps of obtaining data information and service information in an all-optical network, planning service working routes, service electric relay nodes and service working route channel numbers in the all-optical network, generating each corresponding interrupt scene according to information of each shared risk link group in the all-optical network, obtaining all risk services in each interrupt scene, calculating the optimal source host node for service recovery, the optimal relay node for service recovery, the optimal route for service recovery and the optimal channel numbers for service recovery of each risk service, counting the construction scale of the all-optical network according to the information corresponding to the service working routes and the service recovery routes, and optimizing the initial topological structure of the all-optical network by combining preset optimization reference conditions. Therefore, the method and the device can improve the accuracy of network resource planning and the reasonability of network topology planning.

Description

ROADM all-optical network planning method and device based on WSON function

Technical Field

The invention relates to the technical field of communication, in particular to a ROADM all-optical network planning method and device based on a WSON function.

Background

With the development and popularization of network communication technology, all-optical networks are also more and more widely applied in the life of people, and the data traffic and the data carrying capacity in the networks are continuously increased. At present, the 100G technology using coherent reception technology has been commercialized in large scale by various operators, and the mature digital information processing technology implements the compensation of dispersion in the electrical domain, so that the dispersion is no longer the key factor limiting the long-distance transmission of DWDM systems. Meanwhile, the WSS technology is continuously advanced and mature in the aspects of improving reliability, increasing density, reducing cost, and the like, and the development of an all-optical network with the 100G technology as a cornerstone and the WSS technology as a core is promoted. The all-optical network has six basic device structures: ROADM (direction dependent, wavelength dependent, no contention), C-ROADM (direction dependent, wavelength independent, no contention), D-ROADM (direction independent, wavelength dependent, contention dependent), CD-ROADM (direction independent, wavelength independent, contention dependent), CDC-ROADM (direction independent, wavelength independent, contention independent), CDCF-ROADM (direction independent, wavelength independent, contention independent, flexible grid). The WSON is an ASON based on a WDM transmission network, is an intelligent wavelength division standard advocated by the IETF standard organization at present, mainly solves the problems of automatic optical fiber/wavelength discovery, online wavelength routing, damage model-based routing and the like in a wavelength division network, and realizes dynamic allocation of optical wavelengths. Currently, planning an all-optical network generally includes checking an optical cable in a certain area, checking a station related to the optical cable, forming an all-optical network topology structure with the station as a point and the optical cable as a line, and finally setting a ROADM node according to a terminal requirement of a service and a requirement of a network structure to obtain a final network topology structure.

However, in the prior art, in the topology planning stage of the all-optical network, since there is no traffic information, the network topology cannot be deeply optimized, which results in too fast consumption of part of node line dimensions, and since the network topology planning is not reasonable, the optical fiber consumption is too large and the network construction cost is too high. Therefore, it is important to reasonably plan the all-optical network.

Disclosure of Invention

The technical problem to be solved by the present invention is to provide a method and an apparatus for ROADM all-optical network planning based on WSON function, which can optimize the initial topology structure of an all-optical network according to traffic information, reduce fiber consumption and network construction cost, and facilitate to improve the accuracy of network resource planning, thereby facilitating to improve the rationality of the all-optical network topology planning.

In order to solve the above technical problem, a first aspect of the present invention discloses a method for ROADM all optical network planning based on a WSON function, where the method includes:

acquiring data information and service information in an all-optical network, wherein the all-optical network has an initial topological structure corresponding to the all-optical network, the data information comprises node information, OMS information and link group information of a shared risk link group in the all-optical network, and the service information comprises original service information and newly added service information in the all-optical network;

planning a service working route in the all-optical network according to the data information and the service information, planning a service electric relay node of the service working route in the all-optical network, and planning a service working route channel number in the all-optical network;

generating an interrupt scene corresponding to each shared risk link group according to the link group information of each shared risk link group in the all-optical network, and acquiring an affected risk service in the interrupt scene corresponding to each shared risk link group;

calculating the service recovery optimal source and sink node of each risk service, planning the service recovery electrical relay nodes of all the risk services and the service recovery routes of all the risk services according to the service recovery optimal source and sink nodes of all the risk services, and planning the service recovery route channel numbers of all the risk services;

according to the information corresponding to the service working route and the information corresponding to the service recovery route, the construction scale of the all-optical network is counted;

and optimizing the initial topological structure according to the construction scale of the all-optical network and in combination with a predetermined optimization reference condition to obtain an optimized target topological structure.

The second aspect of the present invention discloses a ROADM all optical network planning device based on WSON function, said device comprising:

the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring data information and service information in an all-optical network, the all-optical network has an initial topological structure corresponding to the all-optical network, the data information comprises node information, OMS information and link group information of a shared risk link group in the all-optical network, and the service information comprises original service information and newly added service information in the all-optical network;

the first planning module is used for planning the service working route in the all-optical network according to the data information and the service information;

the second planning module is used for planning the service electric relay node of the service working route in the all-optical network according to the data information and the service information;

the third planning module is used for planning the service working routing channel number in the all-optical network according to the data information and the service information;

a generating module, configured to generate an interrupt scenario corresponding to each shared risk link group according to link group information of each shared risk link group in the all-optical network;

the obtaining module is further configured to obtain an affected risk service in an interrupt scene corresponding to each shared risk link group;

the calculation module is used for calculating the optimal source and destination node for the service recovery of each risk service;

a fourth planning module, configured to plan service recovery electrical relay nodes of all the risky services and service recovery routes of all the risky services according to the service recovery optimal source and sink nodes of all the risky services, and plan service recovery route channel numbers of all the risky services;

the statistical module is used for counting the construction scale of the all-optical network according to the information corresponding to the service working route and the information corresponding to the service recovery route;

and the optimization module is used for optimizing the initial topological structure by combining a predetermined optimization reference condition according to the construction scale of the all-optical network to obtain an optimized target topological structure.

The third aspect of the present invention discloses another ROADM all optical network planning device based on WSON function, said device includes:

a memory storing executable program code;

a processor coupled with the memory;

the processor calls the executable program code stored in the memory to execute the ROADM all-optical network planning method based on the WSON function disclosed by the first aspect of the invention.

The fourth aspect of the present invention discloses a computer-readable storage medium, where the computer-readable storage medium stores computer instructions, and when the computer instructions are called, the computer instructions are used to execute the ROADM all-optical network planning method based on the WSON function disclosed in the first aspect of the present invention.

Compared with the prior art, the embodiment of the invention has the following beneficial effects:

in the embodiment of the invention, data information and service information in an all-optical network are acquired, service working routes, service electric relay nodes and service working route channel numbers in the all-optical network are planned, each corresponding interrupt scene is generated according to the information of each shared risk link group in the all-optical network, all risk services in each interrupt scene are acquired, the optimal service recovery source host node, the optimal service recovery electric relay node, the optimal service recovery route and the optimal service recovery route channel number of each risk service are calculated, the construction scale of the all-optical network is counted according to the information corresponding to the service working routes and the service recovery routes, and the initial topological structure of the all-optical network is optimized by combining preset optimization reference conditions. Therefore, the implementation of the invention can plan the service route according to the traffic information of the service, further optimize the initial topological structure of the all-optical network to obtain the optimized topological structure, reduce the optical fiber consumption and the network construction cost in the all-optical network, avoid the waste of network resources, be beneficial to improving the accuracy of network planning and be further beneficial to improving the rationality of the network topological structure planning.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic flowchart of a ROADM all-optical network planning method based on a WSON function disclosed in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a ROADM all-optical network planning device based on a WSON function according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of another ROADM all-optical network planning apparatus based on the WSON function according to an embodiment of the present invention.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terms "first," "second," and the like in the description and claims of the present invention and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, article, or article that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or article.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The invention discloses a method and a device for ROADM all-optical network planning based on a WSON function, which can optimize and plan service routing according to traffic information of a service, further optimize an initial topological structure of an all-optical network to obtain an optimized topological structure, reduce optical fiber consumption and network construction cost, save network resources and further contribute to improving the rationality of the all-optical network topological structure planning.

Referring to fig. 1, fig. 1 is a schematic flow chart of a ROADM all optical network planning method based on a WSON function according to an embodiment of the present invention. The ROADM all-optical network planning method based on the WSON function described in fig. 1 may be applied to a network planning device, and the embodiment of the present invention is not limited thereto. As shown in fig. 1, the ROADM all-optical network planning method based on the WSON function may include the following operations:

101. the method comprises the steps of obtaining data information and service information in an all-optical network, wherein the all-optical network has an initial topological structure corresponding to the all-optical network, the data information comprises node information, OMS information and link group information of a shared risk link group in the all-optical network, and the service information comprises original service information and newly added service information in the all-optical network.

In the embodiment of the invention, the node is a local station which is configured with ROADM equipment in an all-optical network; the link is an optical cable section formed by one or more optical cables between two adjacent nodes; an OMS (Optical Multiplex Section) is a DWDM system on a link, and further, one or more OMS are in a link; one or more OMSs (Shared Risk Link Groups) exist in a Shared Risk Link group, and the OMSs in the same Shared Risk Link group have the Risk of simultaneous interruption or simultaneous failure; traffic refers to wavelength-level circuits carried end-to-end on an all-optical network.

In the embodiment of the invention, the data information comprises node information, OMS information and link group information of a shared risk link group in the all-optical network. The node information in the all-optical network comprises one or more of the serial numbers of all nodes in the all-optical network, the names of the nodes, the number of optical line directions of the nodes, the number of existing OTUs of the nodes, the number of existing working relay OTUs of the nodes, the number of existing recovery relay OTUs of the nodes, the number of idle service OTUs of the nodes, the number of idle relay OTUs of the nodes and the electrical relay attribute of the nodes; OMS information in the all-optical network comprises one or more of codes of each OMS in all OMSs in the all-optical network, starting point names of the OMSs, starting point serial numbers of the OMSs, end point names of the OMSs, end point serial numbers of the OMSs, link serial numbers of the OMSs, lengths of the OMSs, DGD values of the OMSs, OSNR values of the OMSs, equivalent span numbers of the OMSs and service work routing attributes of the OMSs; the link group information of the shared risk link group in the all-optical network includes one or more of a name of the shared risk link group, and an encoding of an OMS within the shared risk link group.

In this embodiment of the present invention, optionally, the original service information in the all-optical network includes a use condition of the OMS of the original service working route. Furthermore, after obtaining the use condition of the OMS of the original service working route, reading each original service working route, and marking the identifier of the service working on each used OMS channel. The newly added service information comprises one or more of the name of the service association group, the starting point of the service, the end point of the service, the name of the node which the service must pass through, the coding of the OMS which the service must pass through, the name of the node which the service must not pass through, the coding of the OMS which the service must not pass through and the recovery attribute of the service.

Therefore, in the embodiment of the invention, by acquiring the data information and the service information in the all-optical network, the multi-azimuth information in the all-optical network can be acquired, which is beneficial to improving the accuracy and the effectiveness of the subsequent planning of the service working route, and is beneficial to saving network resources, thereby being beneficial to improving the rationality of the planning of the all-optical network topology structure.

102. And planning a service working route in the all-optical network, planning a service electric relay node of the service working route in the all-optical network and planning a service working route channel number in the all-optical network according to the data information and the service information.

In the embodiment of the invention, the service working route refers to a route used by a service under a normal working condition, and the service electric relay node refers to a node which can be used for electric relay in the service working route. By planning the service working route, the service electric relay node and the service working route channel number in the all-optical network according to the data information and the service information in the all-optical network, the accuracy and the effectiveness of the optimization of the all-optical network topology structure can be improved, and the waste of network resources can be avoided.

In an alternative embodiment, planning a service operation route in an all-optical network includes:

acquiring a service work route separation strategy and a service work route path searching strategy in an all-optical network;

according to the service information and service working route separation strategy and the service working route routing strategy, disconnecting the OMS of which the used channel number reaches a set channel number threshold value and disconnecting the OMS which is not used for the service working route;

judging whether the current service is required by an OMS (operation management system) or not according to the service information, wherein the current service is any one of all original services and all newly added services;

when judging that the current service is not required by the OMS, disconnecting the corresponding OMS; and/or judging whether the current service exists or not according to the service information without the node requirement;

and when judging that the current service has the requirement of unnecessary nodes, disconnecting all OMSs with the starting point or the end point of unnecessary nodes.

In this optional embodiment, the service work route separation policy includes a route separation policy and a node separation policy, and the service work route searching policy includes a shortest path policy, a minimum hop count policy, and a minimum cost policy.

Therefore, in the optional embodiment, by judging whether the current service has the requirement of passing through the OMS and/or the node, and then judging whether the corresponding OMS and/or the corresponding OMS which does not pass through the node need to be disconnected, the accuracy of the route planning of the all-optical network service can be improved, the waste of network resources can be avoided, and the rationality of the optimization of the all-optical network topology structure can be improved.

In another optional embodiment, the method further comprises:

when judging that the current service does not have the requirement of not passing through an OMS (operation management system) and not having the requirement of passing through a node, acquiring a related service routing separation strategy in an all-optical network and related service information in the all-optical network, and judging whether the current service in the all-optical network is a service in a related service group according to the related service information in the all-optical network, wherein the related service group comprises a first service group and a second service group;

when the current service is judged to be the service in the associated service group, disconnecting the service routing OMS of all the services in the service group which does not include the current service in the associated service group and disconnecting all the OMS which belong to the same shared risk link group with the current service;

when the current service is judged not to be the service in the associated service group, calculating a service working route between every two nodes according to a service working route routing strategy;

judging whether the current service has a must pass node requirement or not according to the service information;

when judging that the current service has the requirement of the must-pass node, splicing the service working route according to the requirement of the must-pass node; and/or

Judging whether the current service has the mandatory OMS requirement according to the service information;

when judging that the current service has the requirement of the OMS, splicing the service working route according to the requirement of the OMS;

and, the method further comprises:

judging whether the current service has a must-pass node requirement and a must-pass OMS requirement according to the service information;

and when judging that the current service has no requirement of the mandatory node and the mandatory OMS, closing all OMSs except the OMS without idle channel resources.

In this optional embodiment, when it is determined that the current service is a service in the associated service group, the service routing OMS of all services in the service group that does not include the current service in the associated service group is disconnected, and all OMS that belong to the same shared risk link group as the current service are disconnected according to the associated service working routing separation policy, where the associated service working routing separation policy includes a routing separation policy and a node separation policy. For example, when the associated service routing separation policy is the routing separation policy and an associated service group a group is planned, the OMS of the service routes of all service groups except the associated service group a group is disconnected, and all OMS of the same shared risk link group as the associated service group a group are disconnected. Further, when a node separation policy of the associated service group separation policy is implemented and an associated service group B group is planned, the OMS of the service routes of all service groups except the associated service group B group is disconnected, all OMS of the shared risk link group that is the same as the associated service group B group is disconnected, information of all nodes except the start point and the end point of the associated service group B group through which the service routes of the service groups except the associated service group B group pass is read, all nodes except the start point and the end point of the associated service group B group are set as unnecessary nodes of the associated service group B group, and all the OMS of which the start point or the end point is all nodes except the start point and the end point of the associated service group B group are disconnected.

In the optional embodiment, when it is determined that the current service is not a service in the associated service group, a service working route between every two nodes is calculated according to a service working route routing policy, where the service working route routing policy includes a shortest path routing policy, a minimum hop count routing policy, and a minimum cost routing policy. And when the service working route searching strategy is the shortest path strategy, working routes between every two nodes in the all-optical network are calculated through the length of the OMS in the service and the shortest path algorithm, and further, when the length difference of a plurality of alternative routes is within a certain error range, the route with the least hop number is selected. When the service working route searching strategy is the minimum cost strategy, working routes between every two nodes in the all-optical network are obtained through calculation by using an OSNR value of an OMS, an OSNR simulation calculation formula (58 formula) recommended by ITU-T and an algorithm optimized by a shortest path algorithm, and further, when the cost difference of a plurality of alternative routes is within a certain error range, the route with the shortest length is selected. And when the service working route routing strategy is the minimum hop strategy, setting the length of the OMS to be 1, calculating by using a shortest path algorithm to obtain the working route between every two nodes in the all-optical network, and further, when the hop difference of a plurality of alternative routes is within a certain error range, selecting the route with the shortest length.

In the optional embodiment, if the current service has a routing policy of the necessary nodes, node selection information from the start point of the service to each necessary node is respectively obtained according to the service working routing policy, and the service working routes are spliced according to each node selection information, where the node selection information is determined according to the service routing policy, and the node selection information includes length information, hop count information, and cost information. For example, if the current service is limited by n inevitable nodes and the service working route routing strategy is the shortest path routing strategy, the length D1 from the starting point of the current service to the first inevitable node and the length D2 from the starting point of the current service to the second inevitable node are obtained until the length Dn of the nth inevitable node are obtained, and the obtained lengths D1 to Dn are sorted from small to large to obtain a 1 xn sequence of the inevitable nodes of the current service, the service working route of the current service is from "the starting point-sequence number 1 node of the service" + "sequence number 1 node-sequence number 2 node" until "sequence number n node-end point of the service", that is, the splicing of the service working route of the current service is completed.

In the optional embodiment, if the current service has the requirement of the indispensable OMS, respectively obtaining a starting point and an end point of each indispensable OMS of the current service according to a service working route routing strategy, eliminating two connection nodes of the indispensable OMS, obtaining node selection information from the starting point to each indispensable node of the current service, and splicing the service working route of the current service according to the node selection information from the starting point to each indispensable node of the current service. For example, if the current service has n compulsory OMS requests and the service working route routing strategy is the shortest path routing strategy, the starting point and the end point of all the compulsory OMS are obtained to obtain 2n compulsory nodes, two connecting nodes of the compulsory OMS are removed, the length D1 from the starting point to the first compulsory node and the length D2 from the starting point to the second compulsory node of the current service are obtained until the length Dn of the nth compulsory node are obtained, the obtained lengths D1 to Dn are sorted from small to large to obtain each sequence number node, another node of the compulsory OMS which is the same as the sequence number node is removed to obtain a 1 Xn sequence of the compulsory node of the current service, and the service working route of the current service is from the starting point of the sequence number 1 node of the current service to the sequence number 2 node of the OMS where the sequence number 1 node is located to the other end point of the OMS where the sequence number 1 node is located Node-the end point of the service ".

It can be seen that, in the alternative embodiment, by determining whether the current service is a service in the associated service group, if yes, disconnecting the service routing OMS of all services in the service group, which does not include the current service, in the associated service group and disconnecting all OMS belonging to the same shared risk link group as the current service according to the service working routing separation policy; if not, judging whether the current service has a must-pass node requirement and/or a must-pass OMS requirement, and if so, splicing the service working routes according to the service working route routing strategy, so that the accuracy of splicing the service working routes of the current service can be ensured, the practicability of the service working routes can be improved, and the reasonability of planning the service working routes can be further improved.

In yet another alternative embodiment, a service electrical relay node for planning service operation routes in an all-optical network, comprises:

calculating the accumulated OSNR values of all OMSs between the starting node determined aiming at the service working route and the determined termination node, wherein the initially determined termination node is the second node from which the starting node starts;

judging whether the accumulated OSNR value is larger than a preset OSNR tolerance value or not;

when the accumulated OSNR value is judged to be larger than the OSNR tolerance value, determining the next adjacent node of the termination node as a new termination node, and triggering the step of calculating the accumulated OSNR values of all OMSs between the starting node and the determined termination node and the step of judging whether the accumulated OSNR value is larger than the preset OSNR tolerance value or not;

when judging that the accumulated OSNR value is not greater than the OSNR tolerance value, sequentially judging whether the path nodes can be used for electric relay from the previous node of the termination node to the direction of the starting node, and when judging that a certain path node can be used for electric relay, setting the path node as a service electric relay node;

and determining the service power relay node as a new starting node aiming at the service working route, triggering the step of executing and calculating the accumulated OSNR values of all OMSs between the determined starting node and the determined terminating node, and triggering the step of executing and judging whether the accumulated OSNR value is greater than a preset OSNR tolerance value.

In this optional embodiment, since the nodes with a large number in the optical line direction can be favorable for recovering the detour of the service, and at the same time, the number of the electrical relays can be saved, so that the nodes with a large number of optical lines can be preferentially selected as the service electrical relay nodes, which can improve the utilization rate of network resources and is favorable for improving the rationality of the planning of the all-optical network topology structure.

It can be seen that, in this optional embodiment, by calculating the accumulated OSNR values of all OMS between the start node and the end node determined in the service working route, it is determined whether the accumulated OSNR value is greater than the OSNR tolerance value of the pre-device, and then it is determined whether the electrical relay is needed, the accuracy of determining whether the service working route needs the electrical relay can be improved, resource waste caused by too many set electrical relays can be avoided, further, by preferentially selecting nodes with a large number of optical line directions as the electrical relay nodes, the number of set electrical relays can be reduced, network resources can be saved, network construction cost can be saved, and the rationality of planning the all-optical network topology structure can be improved.

In yet another optional embodiment, the method further comprises:

determining the length of each electric relay section aiming at all service electric relay nodes determined by the service working route, the starting point of the service working route and the end point of the service working route, and judging whether a target electric relay section which does not meet the preset length requirement exists or not;

and when the target electrical relay section exists, executing a length adjustment operation on the target electrical relay section to update the length of the target electrical relay section and the starting node of the target electrical relay section, wherein the length adjustment operation indicates that the service electrical relay nodes in the electrical relay sections which do not meet the preset length requirement are moved forward to the starting node direction of the service working route one by the way nodes until the length of the target electrical relay section meets the preset length requirement.

Therefore, in the optional embodiment, the length adjustment operation is performed on the target electrical relay segment, so that the target electrical relay segment can meet the requirement of the preset length, and the length of the target electrical relay segment is uniform, so that the signal transmission in the all-optical network is more stable, the network resource and the network construction cost are saved, and the rationality of the topology planning of the all-optical network is improved.

In yet another alternative embodiment, the planning of the channel number of the service working route in the all-optical network includes:

searching all the OMS idle channel numbers in each target electrical relay section by taking the target electrical relay section as a unit, and judging whether the idle channel numbers of all the OMS have intersection or not;

when judging that the idle channel numbers of all OMSs have intersection, marking the channel corresponding to the idle channel number shared by all OMSs as a channel number for newly adding work;

when judging that the idle channel numbers of all OMSs do not have intersection, sequencing all OMSs in the target electrical relay section from high to low according to the channel utilization rate, replacing the target OMSs of which the channel utilization rates meet the preset utilization rate requirement in all the OMSs in the target electrical relay section with the same optical cable routing OMS so as to update all the OMSs in the target electrical relay section, and triggering and executing again to search the idle channel numbers of all the OMSs in each target electrical relay section, and judging whether the idle channel numbers of all the OMSs have intersection or not;

and, the method further comprises:

and when the target OMS in the target electrical relay section cannot be replaced by the same optical cable routing OMS, adding an OMS in a corresponding link in the target electrical relay section.

In this optional embodiment, the OMS includes one or more channels, and when any channel in any OMS is in an occupied state or an idle state, the channel has a corresponding identifier.

It can be seen that, in this optional embodiment, the number of the idle channels of all OMS in each target electrical relay segment is searched, the number of the idle channels shared by all OMS is determined as the number of the channel for the new service, and if there is no shared number of the idle channels in all OMS in each target electrical relay segment, the target OMS with a high usage rate is replaced by the OMS with the same optical cable route or the new OMS, so that the number of the new OMS can be saved, the usage rate of the channels in the OMS can be improved, network resources can be saved, and the rationality of planning the service working route can be improved.

103. And generating an interruption scene corresponding to each shared risk link group according to the link group information of each shared risk link group in the all-optical network, and acquiring the influenced risk service in the interruption scene corresponding to each shared risk link group.

In the embodiment of the present invention, it should be noted that there are one or more affected risk services in the interrupt scenario corresponding to each shared risk link group. Therefore, the accuracy of determining the risk service can be improved by acquiring the affected risk service in the interrupt scene corresponding to each shared risk link group, and the recovery of the risk service can be planned reasonably in a targeted manner.

In an optional embodiment, the obtaining of the affected risk service in the interrupt scenario corresponding to each shared risk link group includes:

determining all OMSs in each shared risk link group, and judging whether all OMSs in the service working route overlap with all OMSs in the shared risk link group, wherein all OMSs in the service working route comprise all OMSs in the original service route and all OMSs in the newly added service working route;

and when judging that all OMSs in the service working route are overlapped with all OMSs in the shared risk link group, extracting the services corresponding to all OMSs overlapped with the shared risk link group in the service working route into an interruption scene corresponding to the shared risk link group, and taking the interruption scene as the influenced risk service in the interruption scene corresponding to the shared risk link group.

Therefore, in the optional embodiment, by judging whether all OMS in each shared risk link group overlap with all OMS in the service working route, and then extracting the services corresponding to all overlapping OMS into the interruption scenes corresponding to the shared risk link group, as the affected risk services in the interruption scenes corresponding to the shared risk link group, the accuracy of obtaining the risk services can be improved, and the rationality of the all-optical network planning can be improved.

104. And calculating the service recovery optimal source and sink node of each risk service, planning the service recovery electrical relay nodes of all risk services and the service recovery routes of all risk services according to the service recovery optimal source and sink nodes of all risk services, and planning the service recovery route channel numbers of all risk services.

In the embodiment of the invention, the service recovery optimal source and destination node refers to the starting point and the end point of the route for recovering the risk service.

In the embodiment of the invention, the optimal source and sink node for the service recovery of each risk service is calculated, the service recovery electrical relay nodes and the service recovery routes of all risk services are planned according to the optimal source and sink node for the service recovery, and the number of the service recovery route channels is planned, so that the waste of network resources can be avoided, the accuracy and the effectiveness of the risk service recovery can be improved, and the reasonability of the all-optical network planning can be improved.

In an optional embodiment, calculating the traffic restoration optimal source and sink node for each risk traffic includes:

acquiring a service recovery route routing strategy of an all-optical network, disconnecting OMS (operation management system) of which the used channel number reaches a preset channel number threshold in a service working route, disconnecting all OMS in an interrupt scene corresponding to all shared risk link groups, and calculating the recovery route between every two nodes in a determined node set and the required electric relay times of the recovery route between every two nodes according to the service recovery route routing strategy, wherein the node set comprises a starting point of the service working route, an end point of the service working route and all service electric relay nodes of the service working route;

calculating the interruption position of the risk service of each interruption scene in the corresponding target electric relay section by taking the target electric relay section of the service working route as a unit;

and aiming at each risk service, determining an optimal source and sink node required by the risk service for service recovery according to the number of electric relay times required by the recovery route of each node after the interruption position of the risk service in the node set and each node before the interruption position of the risk service in the node set.

Therefore, in the optional embodiment, the optimal source and sink node required by service recovery is determined by calculating the number of electrical relays required by the recovery route of each node, so that the waste of network resources can be avoided, the accuracy and effectiveness of recovery of risk services can be improved, and the reasonability of all-optical network planning can be improved.

In another optional embodiment, planning the service recovery electrical relay nodes of all the risky services and the service recovery routes of all the risky services according to the service recovery optimal source and sink nodes of all the risky services includes:

combining the electric relay times with the same size in the electric relay times corresponding to the optimal source host node required by service recovery of all the risk services in all the interruption scenes to obtain a plurality of target electric relay times with different sizes;

and planning the service recovery electric relay node and the service recovery route of each risk service in all the risk services with the required electric relay times corresponding to the optimal source host node for each target electric relay time.

In this optional embodiment, it should be noted that there are multiple electrical relay times corresponding to the optimal source and sink nodes required for service restoration of all the risk services in all the interruption scenarios.

It can be seen that, in this optional embodiment, the electrical relay times corresponding to the optimal source-sink node are recovered according to the services of all the risky services, and then the operation corresponding to the electrical relay times is executed, so that the accuracy of calculating the electrical relay times can be improved, the waste of network resources can be avoided, the optical fiber consumption can be reduced, the network construction cost can be reduced, and the rationality of the all-optical network topology planning can be improved.

In yet another optional embodiment, all the target electrical relay times include 0, 1, 2, and 3, where for each target electrical relay time, a service restoration electrical relay node and a service restoration route for each risk service in all the risk services for which the electrical relay time corresponding to the required optimal source and sink node is the target electrical relay time are planned, and the method includes:

planning a service recovery route of each risk service in all risk services with the number of electric relay times of 0 corresponding to the required optimal source and destination node;

calculating a recovery relay matrix table corresponding to all the risk services of which the electrical relay frequency corresponding to the required optimal source and sink node is 1, performing solving operation on the recovery relay matrix table to obtain a solution of the recovery relay matrix table, recovering the electrical relay node and the service recovery route of each risk service of which the electrical relay frequency corresponding to the optimal source and sink node is 1 according to the solution of the recovery relay matrix table, and updating the number of OTUs capable of being used for service recovery in each path node of the all-optical network;

after planning out a service recovery electric relay node and a service recovery route of each risk service in all risk services with the electric relay frequency of 1 corresponding to the required optimal source host node, calculating the number of all first nodes to be selected which have redundant electric relay OTUs and can be used as the risk service for service recovery and the number of redundant electric relay OTUs of each first node to be selected for each risk service with the electric relay frequency of 2 corresponding to the required optimal source host node, and judging whether every two nodes in all the first nodes to be selected can meet the network performance requirement when the risk service is subjected to service recovery to obtain a judgment result; planning a service recovery electric relay node and a service recovery route of the risk service according to the judgment result;

after planning out a service recovery electric relay node and a service recovery route of each risk service in all risk services with the electric relay frequency 2 corresponding to the required optimal source host node, calculating the number of all second nodes to be selected which have redundant electric relay OTUs and can be used for service recovery of the risk service and the number of the redundant electric relay OTUs of each second node to be selected for each risk service with the electric relay frequency 3 corresponding to the required optimal source host node, and judging whether any three second nodes to be selected in all the nodes to be selected can meet the network performance requirement when the risk service is subjected to service recovery, so as to obtain a judgment result; and planning the service recovery electric relay node and the service recovery route of the risk service according to the judgment result.

In this optional embodiment, further, when the number of electrical relays corresponding to the planned optimal source-sink node is greater than 3, the design of the topology structure of the all-optical network is perfected, and the routes of the all-optical network are enriched. Therefore, the waste of network resources in the all-optical network can be avoided, the utilization rate of the electric relay nodes can be improved, and the reasonability of the all-optical network planning can be improved.

Therefore, in the optional embodiment, by planning the number of electrical relays corresponding to the required optimal source-sink node and then executing the corresponding operation on different numbers of electrical relays, the waste of network resources in the all-optical network can be avoided, the utilization rate of the electrical relay nodes can be improved, and the rationality of the all-optical network planning can be further improved.

In yet another alternative embodiment, planning the service recovery routing channel numbers of all the risky services includes:

acquiring the quantity of OMSs (operation management systems) required for recovering all risk services in interrupt scenes corresponding to all shared risk link groups, and sequencing the OMSs from more to less, wherein in the interrupt scenes corresponding to each shared risk link group, whether channel numbers marked as shared recovery exist in all OMSs in all recovery electrical relay sections is judged by taking the recovery electrical relay sections in a service recovery route as a unit;

when judging that all OMSs in all the recovery power relay sections have the channel numbers marked as shared recovery, re-triggering and executing the step of judging whether all OMSs in the recovery power relay sections have the channel numbers marked as shared recovery until the service recovery routing channel planning is finished;

when judging that all OMSs in all the recovery power relay sections do not have the channel numbers marked as shared recovery, judging whether the idle channel numbers of all the OMSs in all the recovery power relay sections have intersection or not;

when judging that the idle channel numbers of all OMSs in all the recovery power relay sections have intersection, marking the channel corresponding to the idle channel number shared by all the OMSs as the channel number for shared recovery, and triggering and executing the step of judging whether the channel number marked as the shared recovery exists in all the OMSs in the recovery power relay sections again until the service recovery route channel planning is finished;

when judging that the idle channel numbers of all OMSs in all the recovery electrical relay sections do not have intersection, sequencing all OMSs in all the recovery electrical relay sections from high to low according to the channel utilization rates, replacing first target OMSs of which the channel utilization rates meet the requirement of a preset utilization rate in all the OMSs in all the recovery electrical relay sections with same-link OMSs so as to update all the OMSs in the recovery electrical relay sections, and triggering and executing to judge whether the channel numbers marked as recovery sharing exist in all the OMSs in all the recovery electrical relay sections;

and, the method further comprises:

and when the first target OMS cannot be replaced by the OMS with the same link, adding an OMS in the link corresponding to the power restoration relay section, and planning the service restoration routing channel numbers of all the risk services by the aid of the added OMS.

It can be seen that, in this optional embodiment, by obtaining the number of OMS required for recovering all the risk services in the interrupt scenario corresponding to all the shared risk link groups and planning the channel numbers of all the OMS in all the recovery power relay sections, the number of newly added OMS can be saved, the utilization rate of the channels in the OMS can be improved, and thus, network resources are saved, and the rationality of planning the service working route is improved.

105. And counting the construction scale of the all-optical network according to the information corresponding to the service working route and the information corresponding to the service recovery route.

In the embodiment of the invention, the information corresponding to the service working route comprises at least one of the service working route, the service working route electrical relay node and the service working route channel number; the information corresponding to the service restoration route comprises at least one of a service restoration optimal source and destination node, a service restoration electrical relay node, a service restoration route and a service restoration route channel number.

In the embodiment of the present invention, optionally, the construction scale of the all-optical network includes one or more of the number of the service OTUs newly added to the node, the number of the electrical relay OTUs newly added to the node for the service working route, the number of the channels used by the OMS for the service working route, the number of the electrical relay OTUs newly added to the service node for the route restoration, and the number of the channels used by the OMS for the service restoration route. Furthermore, the construction scale of the all-optical network can be counted according to the number of OTUs in the all-optical network and the channel planning condition of the OMS.

Therefore, in the embodiment of the invention, the construction scale of the all-optical network is counted according to the information corresponding to the service working route and the information corresponding to the service recovery route, so that the accuracy of counting the construction scale of the all-optical network can be improved, the waste of network resources can be avoided, the optical fiber consumption can be reduced, the network construction cost can be reduced, and the reasonability of the planning of the all-optical network can be improved.

106. And optimizing the initial topological structure according to the construction scale of the all-optical network and in combination with the predetermined optimization reference condition to obtain the optimized target topological structure.

In the embodiment of the invention, the initial topological structure of the all-optical network is optimized according to the construction scale of the all-optical network and the predetermined optimization reference condition, so that the waste of network resources can be avoided, the accuracy of optimizing the all-optical network topological structure can be improved, and the reasonability of planning the all-optical network can be improved.

In another optional embodiment, the optimizing the initial topology structure according to the construction scale of the all-optical network and in combination with a predetermined optimization reference condition to obtain an optimized target topology structure includes:

determining the number of newly-added used channels through which optical layers can pass through between every two adjacent OMSs according to the construction scale of the all-optical network, if the number of newly-added used channels through which optical layers can pass through between every two adjacent OMSs is larger than a preset threshold value of the number of channels, not setting ROADM nodes at the connecting points of the two OMSs, and optimizing the initial topological structure of the all-optical network according to at least one of optical cable resource information, machine room matching condition information and residual optical line dimension information to obtain an optimized target topological structure.

In this optional embodiment, the number of newly added and used channels through optical layer communication between all two adjacent OMS is determined, whether the channel number is greater than a preset channel number threshold is judged, whether a ROADM node is set at a connection point of the two OMS is further determined, and according to a predetermined optimization reference condition, waste of network resources can be avoided, the accuracy of optimizing an all-optical network topology structure can be improved, and the reasonability of planning an all-optical network is further improved.

It can be seen that, implementing the ROADM all optical network planning method based on the WSON function described in fig. 1 can plan the service working route in the all optical network by obtaining the data information and the service information in the all optical network, and according to the link group information of each shared risk link group, generate the interrupt scene corresponding to each shared risk link group, and obtain all the affected services in the interrupt scene, then calculate the optimal source and sink node, service restoration electrical relay node, service restoration route, and service restoration route channel number for each risk service to perform service restoration, and according to the information corresponding to the service working route and the information corresponding to the service restoration route, count the construction scale of the all optical network, and combine the predetermined optimization reference condition to optimize the initial topology structure of the all optical network, and can reduce the fiber consumption and the network cost, and network resources can be saved, and the rationality and accuracy of a network topology structure can be improved.

Example two

Referring to fig. 2, fig. 2 is a schematic structural diagram of a ROADM all-optical network planning device based on a WSON function according to an embodiment of the present invention. The apparatus described in fig. 2 may be applied to a network planning apparatus, and the embodiment of the present invention is not limited thereto. As shown in fig. 2, the apparatus may include:

the acquiring module 201 is configured to acquire data information and service information in an all-optical network, where the all-optical network has an initial topology structure corresponding to the data information, the data information includes node information, OMS information, and link group information of a shared risk link group in the all-optical network, and the service information includes original service information and new service information in the all-optical network.

And the first planning module 202 is configured to plan a service working route in the all-optical network according to the data information and the service information.

And the second planning module 203 is configured to plan the service electrical relay node of the service working route in the all-optical network according to the data information and the service information.

And a third planning module 204, configured to plan a service working routing channel number in the all-optical network according to the data information and the service information.

The generating module 205 is configured to generate an interrupt scenario corresponding to each shared risk link group according to the link group information of each shared risk link group in the all-optical network.

The obtaining module 201 is further configured to obtain an affected risk service in an interruption scenario corresponding to each shared risk link group.

And the calculating module 206 is configured to calculate a service restoration optimal source and sink node for each risk service.

And a fourth planning module 207, configured to plan the service recovery electrical relay nodes of all the risky services and the service recovery routes of all the risky services according to the service recovery optimal source and sink nodes of all the risky services, and plan the service recovery route channel numbers of all the risky services.

And the counting module 208 is configured to count the construction scale of the all-optical network according to the information corresponding to the service working route and the information corresponding to the service restoration route.

And the optimizing module 209 is configured to optimize the initial topology structure according to the construction scale of the all-optical network and in combination with a predetermined optimization reference condition to obtain an optimized target topology structure.

It can be seen that, by implementing the apparatus described in fig. 2, the service route can be planned according to the traffic information of the service, and then the initial topology of the all-optical network is optimized to obtain the optimized topology, so that the optical fiber consumption and the network establishment cost in the all-optical network can be reduced, the waste of network resources can be avoided, the accuracy of network planning can be improved, and the rationality of network topology planning can be improved.

In an alternative embodiment, as shown in FIG. 2, the first planning module 202 includes:

the obtaining sub-module 2021 is configured to obtain a service work route separation policy and a service work route routing policy in the all-optical network.

The disconnecting submodule 2022 is configured to disconnect, according to the service information and service working route separation policy and the service working route routing policy, the OMS whose used channel number reaches the set channel number threshold, and the OMS that is not used for the service working route.

The first determining sub-module 2023 is configured to determine, according to the service information, whether the current service exists without an OMS requirement, where the current service is any one of all original services and all newly added services.

The disconnection submodule 2022 is further configured to disconnect the corresponding OMS when the first judgment submodule 2023 judges that the current service does not have to be requested by the OMS;

the first determining sub-module 2023 is further configured to determine whether a current service exists without a node requirement according to the service information.

The disconnecting submodule 2022 is further configured to disconnect all OMS whose starting points or end points are unnecessary nodes when the first judging submodule 2023 judges that the current service has the unnecessary node requirement.

Therefore, the implementation of the apparatus described in fig. 2 can improve the accuracy of the route planning for the all-optical network service, which is beneficial to avoiding the waste of network resources and further beneficial to improving the rationality of the optimization of the all-optical network topology structure.

In another alternative embodiment, as shown in fig. 2, the obtaining sub-module 2021 is further configured to obtain an associated service routing separation policy in the all-optical network and associated service information in the all-optical network when the first determining sub-module 2023 determines that the current service does not have a requirement that does not pass through the OMS and a requirement that does not pass through the node.

The first determining sub-module 2023 is further configured to determine, according to the associated service information in the all-optical network, whether a current service in the all-optical network is a service in an associated service group, where the associated service group includes a first service group and a second service group.

The disconnecting sub-module 2022 is further configured to, when the first determining sub-module 2023 determines that the current service is a service in the associated service group, disconnect service routing OMS of all services in the service group that does not include the current service in the associated service group, and disconnect all OMS that belong to the same shared risk link group as the current service.

The first planning module 202 further includes:

the first calculating sub-module 2024 is configured to calculate a service working route between every two nodes according to the service working route routing policy when the first determining sub-module 2023 determines that the current service is not a service in the associated service group.

The first determining sub-module 2023 is further configured to determine whether the current service has a node requirement according to the service information.

The splicing submodule 2025 is configured to splice the service working routes according to the node requirement when the first judging submodule 2023 judges that the current service has the node requirement for passing through.

The first determining sub-module 2023 is further configured to determine whether the current service has a requirement of passing through the OMS according to the service information.

The splicing submodule 2025 is further configured to splice the service working route according to the mandatory OMS requirement when the first judging submodule 2023 judges that the current service has the mandatory OMS requirement.

The first determining sub-module 2023 is further configured to determine whether the current service has a must-pass node requirement and a must-pass OMS requirement according to the service information.

The closing sub-module 2026 is configured to close all OMS except the OMS without idle channel resources when the first determining sub-module 2023 determines that the current service does not have a node requirement and an OMS requirement.

Therefore, the device described in fig. 2 can ensure the accuracy of splicing the service working routes of the current service, improve the practicability of the service working routes, and further improve the rationality of the service working route planning.

In yet another alternative embodiment, as shown in FIG. 2, the second planning module 203 includes:

a second calculating submodule 2031, configured to calculate cumulative OSNR values of all OMS between a start node determined for the service working route and a determined end node, where the initially determined end node is a second node from the start node;

the second judging submodule 2032 is configured to judge whether the accumulated OSNR value is greater than a preset OSNR tolerance value;

a determining submodule 2033, configured to, when the second determining submodule 2032 determines that the accumulated OSNR value is greater than the OSNR tolerance value, determine a next adjacent node of the termination node as a new termination node, and trigger the step of calculating the accumulated OSNR values of all OMS between the start node and the determined termination node to be executed and the step of determining whether the accumulated OSNR value is greater than the preset OSNR tolerance value;

the determining sub-module 2033 is further configured to, when the second determining sub-module 2032 determines that the accumulated OSNR value is not greater than the OSNR tolerance value, sequentially determine whether the path node can be used for the electrical relay from a node before the termination node toward the start node, and set a path node as a service electrical relay node when determining that a certain path node can be used for the electrical relay;

the determining submodule 2033 is further configured to determine the service electrical relay node as a new start node for the service working route, and trigger the executed step of calculating the cumulative OSNR values of all OMS between the determined start node and the determined end node, and trigger the executed step of determining whether the cumulative OSNR value is greater than the preset OSNR tolerance value.

It can be seen that, by implementing the apparatus described in fig. 2, the accuracy of determining whether the service working route needs the electrical relay can be improved, and resource waste caused by too many set electrical relays can be avoided, and further, by preferentially selecting the nodes with a large number of optical line directions as the electrical relay nodes, the number of set electrical relays can be reduced, which is beneficial to saving network resources, saving network construction cost, and improving the rationality of the planning of the all-optical network topology.

In yet another alternative embodiment, as shown in fig. 2, the determining submodule 2033 is further configured to determine, for all the service electrical relay nodes determined by the service working route, as well as the starting point of the service working route and the end point of the service working route, the length of each electrical relay segment;

the second judging sub-module 2032 is further configured to judge whether there is a target electrical relay segment that does not meet the preset length requirement;

the second planning module 203 further comprises:

an executing sub-module 2034, configured to, when the second determining sub-module 2032 determines that the target electrical relay segment exists, perform a length adjusting operation on the target electrical relay segment to update the length of the target electrical relay segment and the start node of the target electrical relay segment, where the length adjusting operation indicates that the service electrical relay nodes in the electrical relay segments that do not meet the preset length requirement are moved forward one by one towards the start node of the service working route until the length of the target electrical relay segment meets the preset length requirement.

Therefore, the implementation of the apparatus described in fig. 2 can make the length of the target electrical relay section meet the requirement of the preset length, so that the signal transmission in the all-optical network is more stable, and meanwhile, the apparatus is also beneficial to saving network resources and network construction cost, and is beneficial to improving the rationality of the topology planning of the all-optical network.

In yet another alternative embodiment, as shown in fig. 2, the way for the third planning module 204 to plan the channel number of the service working route in the all-optical network specifically is as follows:

It can be seen that the implementation of the apparatus described in fig. 2 can save the number of newly added OMS, and can improve the utilization rate of channels in OMS, thereby being beneficial to saving network resources and improving the reasonability of planning the service working route.

In yet another alternative embodiment, as shown in fig. 2, the manner for acquiring, by the acquiring module 201, the affected risk service in the interrupt scenario corresponding to each shared risk link group is specifically:

It can be seen that the implementation of the apparatus described in fig. 2 can improve the accuracy of acquiring the risk service, which is beneficial to improving the rationality of the all-optical network planning.

In yet another alternative embodiment, as shown in fig. 2, the way for the calculation module 206 to calculate the service restoration optimal source and sink node of each risk service is specifically as follows:

Therefore, the implementation of the apparatus described in fig. 2 can avoid the waste of network resources, and can improve the accuracy and effectiveness of the risk recovery service, thereby being beneficial to improving the rationality of the all-optical network planning.

In yet another alternative embodiment, as shown in fig. 2, the way that the fourth planning module 207 plans the service recovery electrical relay nodes of all the risky services and the service recovery routes of all the risky services according to the service recovery optimal source and sink nodes of all the risky services is specifically:

Therefore, the device described in fig. 2 can improve the accuracy of calculating the number of times of the electrical relay, avoid the waste of network resources, reduce the consumption of optical fibers and the cost of network construction, and further contribute to improving the rationality of the planning of the all-optical network topology structure.

In yet another optional embodiment, as shown in fig. 2, all the target electrical relay times include 0, 1, 2, and 3, where, for each target electrical relay time, the fourth planning module 207 plans, for each target electrical relay time, a manner of recovering an electrical relay node and a service recovery route for each risk service of all the risk services for which the electrical relay time corresponding to the required optimal source sink node is the target electrical relay time specifically is as follows:

Therefore, the implementation of the apparatus described in fig. 2 can avoid the waste of network resources in the all-optical network, and can improve the utilization rate of the electrical relay nodes, thereby being beneficial to improving the rationality of the all-optical network planning.

In yet another alternative embodiment, as shown in fig. 2, the way for the fourth planning module to plan 207 the service recovery routing channel numbers of all the risky services specifically includes:

In yet another alternative embodiment, as shown in fig. 2, the optimization module 209 optimizes the initial topology according to the construction scale of the all-optical network and in combination with the predetermined optimization reference condition, and the manner of obtaining the optimized target topology specifically is:

Therefore, the implementation of the apparatus described in fig. 2 can avoid the waste of network resources, and can also improve the accuracy of optimizing the topology of the all-optical network, thereby being beneficial to improving the rationality of the all-optical network planning.

EXAMPLE III

Referring to fig. 3, fig. 3 is a schematic structural diagram of another device for ROADM all optical network planning based on WSON function according to an embodiment of the present invention. As shown in fig. 3, the apparatus for ROADM all-optical network planning based on WSON function may include:

a memory 301 storing executable program code;

a processor 302 coupled to the memory 301;

the processor 302 calls the executable program code stored in the memory 301 to execute the steps of the ROADM all-optical network planning method based on the WSON function described in the first embodiment of the present invention.

Example four

The embodiment of the invention discloses a computer storage medium, which stores computer instructions, and when the computer instructions are called, the computer instructions are used for executing steps in the ROADM all-optical network planning method based on the WSON function.

EXAMPLE five

The embodiment of the invention discloses a computer program product, which comprises a non-transitory computer readable storage medium storing a computer program, and the computer program is operable to make a computer execute the steps of the method for ROADM all optical network planning based on WSON function described in the first embodiment.

The above-described embodiments of the apparatus are merely illustrative, and the modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

Through the above detailed description of the embodiments, those skilled in the art will clearly understand that the embodiments may be implemented by software plus a necessary general hardware platform, and may also be implemented by hardware. Based on such understanding, the above technical solutions may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, where the storage medium includes a Read-Only Memory (ROM), a Random Access Memory (RAM), a Programmable Read-Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), a One-time Programmable Read-Only Memory (OTPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc-Read-Only Memory (CD-ROM), or other disk memories, CD-ROMs, or other magnetic disks, A tape memory, or any other medium readable by a computer that can be used to carry or store data.

Finally, it should be noted that: the ROADM all-optical network planning method and device based on the WSON function disclosed in the embodiments of the present invention are only preferred embodiments of the present invention, and are only used for illustrating the technical solutions of the present invention, not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A ROADM all-optical network planning method based on a WSON function is characterized by comprising the following steps:

2. The ROADM all-optical network planning method based on WSON function as claimed in claim 1, wherein said planning the service operation route in said all-optical network comprises:

acquiring a service work route separation strategy and a service work route searching strategy in the all-optical network;

according to the service information and the service working route separation strategy and the service working route routing strategy, disconnecting the OMS with the used channel number reaching the set channel number threshold and disconnecting the OMS which is not used for the service working route;

judging whether a current service exists and is not required to pass an OMS (operation management system) requirement according to the service information, wherein the current service is any one of all original services and all newly added services;

when the current service is judged to have the unnecessary OMS requirement, disconnecting the corresponding OMS; and/or the presence of a gas in the gas,

judging whether the current service exists without node requirement according to the service information;

and when judging that the current service has the unnecessary node requirement, disconnecting all OMSs with starting points or end points as the unnecessary nodes.

3. The ROADM all-optical network planning method based on WSON function as claimed in claim 2, wherein the method further comprises:

when the current service is judged to have no unnecessary OMS requirement and no unnecessary node requirement, acquiring an associated service routing separation strategy in the all-optical network and associated service information in the all-optical network, and judging whether the current service in the all-optical network is a service in an associated service group according to the associated service information in the all-optical network, wherein the associated service group comprises a first service group and a second service group;

when the current service is judged to be the service in the associated service group, disconnecting the service routing OMS of all services in the service group which does not include the current service in the associated service group and disconnecting all OMS which belong to the same shared risk link group with the current service;

when the current service is judged not to be the service in the associated service group, calculating a service working route between every two nodes according to the service working route routing strategy;

when judging that the current service has the requirement of the must-pass node, splicing a service working route according to the requirement of the must-pass node; and/or

when judging that the current service has the requirement of the compulsory OMS, splicing a service working route according to the requirement of the compulsory OMS;

and, the method further comprises:

judging whether the current service has the compulsory node requirement and the compulsory OMS requirement according to the service information;

and when judging that the current service does not have the requirement of the compulsory node and the requirement of the compulsory OMS, closing all OMSs except the OMS without idle channel resources.

4. The ROADM all-optical network planning method based on WSON function as claimed in claim 3, wherein the service electrical relay node for planning the service operation route in the all-optical network comprises:

calculating the accumulated OSNR values of all OMSs between a starting node determined aiming at the service working route and a determined terminating node, wherein the initially determined terminating node is a second node from which the starting node starts;

when the accumulated OSNR value is judged to be larger than the OSNR tolerance value, determining the next adjacent node of the termination node as a new termination node, and triggering to execute the step of calculating the accumulated OSNR values of all OMSs between the starting node and the determined termination node and the step of judging whether the accumulated OSNR value is larger than a preset OSNR tolerance value or not;

when judging that the accumulated OSNR value is not larger than the OSNR tolerance value, sequentially judging whether path nodes can be used for electric relay from a node before the termination node to the direction of the starting node, and when judging that a certain path node can be used for electric relay, setting the path node as a service electric relay node;

and determining the service electric relay node as a new starting node aiming at the service working route, and triggering and executing the step of calculating the accumulated OSNR values of all OMSs between the determined starting node and the determined terminating node and the step of judging whether the accumulated OSNR value is larger than a preset OSNR tolerance value or not.

5. The ROADM all-optical network planning method based on WSON function as claimed in claim 4, wherein said method further comprises:

when the target electrical relay segment is judged to exist, executing a length adjustment operation on the target electrical relay segment to update the length of the target electrical relay segment and the starting node of the target electrical relay segment, wherein the length adjustment operation represents that the service electrical relay nodes in the electrical relay segments which do not meet the preset length requirement are moved forward to the starting node direction of the service working route one by the way nodes until the length of the target electrical relay segment meets the preset length requirement.

6. The ROADM all-optical network planning method based on WSON function as claimed in claim 5, wherein said planning the channel number of the traffic operation route in the all-optical network comprises:

searching all the idle channel numbers of the OMSs in each target electrical relay section by taking the target electrical relay section as a unit, and judging whether intersection exists among the idle channel numbers of all the OMSs;

when judging that the idle channel numbers of all the OMSs have intersection, marking the channels corresponding to the idle channel numbers shared by all the OMSs as newly-added working channel numbers;

when judging that the idle channel numbers of all the OMSs do not have intersection, sequencing all the OMSs in the target electrical relay section from high to low according to the channel utilization rate, replacing the target OMSs of which the channel utilization rates meet the preset utilization rate requirement in all the OMSs in the target electrical relay section with optical cable routing OMSs so as to update all the OMSs in the target electrical relay section, and triggering and executing the step of searching the idle channel numbers of all the OMSs in each target electrical relay section again to judge whether the idle channel numbers of all the OMSs have intersection;

and, the method further comprises:

when the target OMS in the target electrical relay section cannot be replaced by the optical-cable routing OMS, an OMS is newly added in a corresponding link in the target electrical relay section.

7. The ROADM all-optical network planning method based on WSON function according to claim 6, wherein said obtaining the affected risk traffic in the interrupt scenario corresponding to each said shared risk link group includes;

determining all OMSs in each shared risk link group, and judging whether all OMSs in the service working route overlap with all OMSs in the shared risk link group, wherein all OMSs in the service working route comprise all OMSs in the original service route and all OMSs in a newly added service working route;

when judging that all OMSs in the service working route are overlapped with all OMSs in the shared risk link group, extracting the services corresponding to all OMSs in the service working route, which are overlapped with the shared risk link group, into an interruption scene corresponding to the shared risk link group, and taking the interruption scene as the influenced risk service in the interruption scene corresponding to the shared risk link group.

8. The ROADM all-optical network planning method based on WSON function as claimed in claim 7, wherein said recovering the optimal source and sink node for calculating the traffic of each said risk traffic comprises:

acquiring a service recovery route routing strategy of the all-optical network, disconnecting an OMS (operation management system) of which the used channel number reaches a preset channel number threshold value in a service working route, disconnecting all OMSs in an interrupt scene corresponding to all the shared risk link groups, and calculating the recovery route between every two nodes in a determined node set and the required electric relay times of the recovery route between every two nodes according to the service recovery route routing strategy, wherein the node set comprises a starting point of the service working route, an end point of the service working route and all the service electric relay nodes of the service working route;

and for each risk service, determining an optimal source and sink node required by the risk service for service recovery according to the number of electrical relay times required by the recovery route of each node after the interruption position of the risk service in the node set and each node before the interruption position of the risk service in the node set.

9. The ROADM all-optical network planning method based on WSON function according to claim 8, wherein said planning all the service recovery electrical relay nodes of said risky service and all the service recovery routes of said risky service according to the service recovery optimal source-sink node of all said risky services comprises:

merging the electric relay times with the same size in the electric relay times corresponding to the optimal source host node required by the service recovery of all the risk services in all the interruption scenes to obtain a plurality of target electric relay times with different sizes;

10. The ROADM all-optical network planning method based on WSON function as claimed in claim 9, wherein all the target electrical relay times include 0, 1, 2 and 3;

wherein, for each target electrical relay time, planning a service recovery electrical relay node and a service recovery route for each risk service in all risk services for which the electrical relay time corresponding to the required optimal source host node is the target electrical relay time, including:

calculating a recovery relay matrix table corresponding to all the risk services of which the electrical relay times are 1 and which correspond to the required optimal source and sink node, performing solving operation on the recovery relay matrix table to obtain a solution of the recovery relay matrix table, recovering the electrical relay nodes and service recovery routes of each risk service of which the electrical relay times are 1 and which correspond to the optimal source and sink node and which correspond to the solution of the recovery relay matrix table, and updating the number of OTUs which can be used for service recovery in each path node of the all-optical network;

after planning out a service recovery electric relay node and a service recovery route of each risk service in all risk services with the electric relay frequency of 1 corresponding to the required optimal source host node, calculating the number of all first nodes to be selected which have redundant electric relay OTUs and can be used for carrying out service recovery on the risk service and the redundant electric relay OTUs of each first node to be selected for each risk service with the electric relay frequency of 2 corresponding to the required optimal source host node, judging whether every two nodes in all the first nodes to be selected can meet the network performance requirement when the risk service carries out service recovery, and obtaining a judgment result; planning a service recovery electric relay node and a service recovery route of the risk service according to the judgment result;

after planning out a service recovery electric relay node and a service recovery route of each risk service in all risk services with the electric relay frequency 2 corresponding to the required optimal source host node, calculating the number of all second nodes to be selected which have redundant electric relay OTUs and can be used as the risk service for service recovery and the number of the redundant electric relay OTUs of each second node to be selected for each risk service with the electric relay frequency 3 corresponding to the required optimal source host node, and judging whether any three second nodes to be selected in all the nodes to be selected can meet the network performance requirement when the risk service is subjected to service recovery, so as to obtain a judgment result; and planning the service recovery electric relay node and the service recovery route of the risk service according to the judgment result.

11. The ROADM all-optical network planning method based on WSON function according to claim 10, wherein said planning the traffic recovery routing channel numbers of all said risky traffic includes:

acquiring the quantity of OMSs (operation and maintenance systems) required for recovering all the risk services in the interrupt scenes corresponding to all the shared risk link groups, and sequencing the quantity of OMSs from more to less, wherein in the interrupt scenes corresponding to each shared risk link group, whether the channel numbers marked as shared recovery exist in all the OMSs in all the recovery electrical relay sections is judged by taking the recovery electrical relay sections in the service recovery routes as units;

when judging that all OMSs in all the recovery electrical relay sections have the channel numbers marked as shared recovery, re-triggering and executing the step of judging whether all the OMSs in the recovery electrical relay sections have the channel numbers marked as shared recovery until the service recovery routing channel planning is finished;

when judging that all OMSs in all the recovery electrical relay sections do not have the channel numbers marked as shared recovery, judging whether the idle channel numbers of all the OMSs in all the recovery electrical relay sections have intersection or not;

when judging that the idle channel numbers of all the OMSs in all the recovery electrical relay sections have intersection, marking the channels corresponding to the idle channel numbers shared by all the OMSs as the channel numbers for shared recovery, and re-triggering and executing the step of judging whether the channel numbers marked as the shared recovery exist in all the OMSs in the recovery electrical relay sections until the service recovery route is planned by the channels;

when judging that the idle channel numbers of all the OMSs in all the recovered electrical relay sections do not have intersection, sequencing all the OMSs in all the recovered electrical relay sections from high to low according to the channel utilization rates, replacing a first target OMS of all the OMSs in all the recovered electrical relay sections, the channel utilization rates of which meet the requirement of a preset utilization rate, with a same-link OMS so as to update all the OMSs in the recovered electrical relay sections, and triggering and executing to judge whether the channel numbers marked as shared recovery exist in all the OMSs in all the recovered electrical relay sections;

and, the method further comprises:

and when the first target OMS cannot be replaced by the OMS with the same link, adding an OMS in a link corresponding to the power restoration relay section, and planning service restoration routing channel numbers of all the risk services by the aid of the added OMS.

12. The ROADM all-optical network planning method based on the WSON function as claimed in claim 11, wherein the optimizing the initial topology structure according to the construction scale of the all-optical network and in combination with a predetermined optimization reference condition to obtain an optimized target topology structure comprises:

and determining the number of newly-added used channels through which the optical layers can be directly communicated between every two adjacent OMSs according to the construction scale of the all-optical network, if the number of the newly-added used channels through which the optical layers can be directly communicated between every two adjacent OMSs is greater than a preset threshold value of the number of the channels, not setting ROADM nodes at the connecting points of the two OMSs, and optimizing the initial topological structure of the all-optical network according to at least one of optical cable resource information, machine room matching condition information and residual optical line dimension information to obtain an optimized target topological structure.

13. A ROADM all optical network planning apparatus based on WSON function, the apparatus comprising:

14. An apparatus for ROADM all-optical network planning based on WSON functions, the apparatus comprising:

a memory storing executable program code;

a processor coupled with the memory;

the processor calls the executable program code stored in the memory to execute the method for ROADM all-optical network planning based on WSON function according to any one of claims 1-12.

15. A computer-storable medium that stores computer instructions that, when invoked, perform a method for WSON-enabled ROADM all-optical network planning as recited in any of claims 1-12.