CN113922916B

CN113922916B - ROADM all-optical network planning method and device based on WSON function

Info

Publication number: CN113922916B
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: 2023-07-14
Anticipated expiration: 2041-10-11
Also published as: CN113922916A

Abstract

The invention discloses a ROADM all-optical network planning method and 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 service recovery optimal source nodes, service recovery electric relay nodes, service recovery routes and service recovery route channel numbers of each risk service, counting construction scales of the all-optical network according to information corresponding to the service working routes and the service recovery routes, and optimizing an initial topological structure of the all-optical network by combining preset optimization reference conditions. Therefore, the invention can improve the accuracy of network resource planning and the rationality of planning the network topology structure.

Description

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

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a ROADM all-optical network planning method and apparatus based on a WSON function.

Background

With the development and popularization of network communication technology, all-optical networks are also increasingly and widely applied to the life of people, and the data traffic and data bearing capacity in the networks are continuously increased. Currently, 100G technology using coherent reception technology has been commercially available on a large scale for various large operators, and mature digital information processing technology has realized compensation for chromatic dispersion in the electrical domain, so that chromatic dispersion is no longer a key factor for limiting long-distance transmission of DWDM systems. Meanwhile, the WSS technology is continuously improved and matured in the aspects of improving reliability, improving density, reducing cost and the like, and the development of an all-optical network taking the 100G technology as a foundation stone and the WSS technology as a core is promoted. An all-optical network has six basic device structures: ROADM (direction-dependent, wavelength-dependent, no competition), C-ROADM (direction-dependent, wavelength-independent, no competition), D-ROADM (direction-independent, wavelength-dependent, competition-dependent), CD-ROADM (direction-independent, wavelength-independent, competition-dependent), CDC-ROADM (direction-independent, wavelength-independent, competition-independent), CDCF-ROADM (direction-independent, wavelength-independent, competition-independent, flexible grid). WSON is ASON based on WDM transmission network, is the intelligent wavelength division standard advocated by IETF standard organization at present, and mainly solves the problems of automatic discovery of optical fiber/wavelength, online wavelength routing, routing based on damage model, and the like in the wavelength division network, and realizes dynamic allocation of optical wavelength. At present, the planning of an all-optical network generally firstly performs investigation on an optical cable within a certain area range, then performs investigation on a local station related to the optical cable, forms a topology structure of the all-optical network by taking the local station as a point and the optical cable as a line, and finally sets a ROADM node according to the terminal requirement of a service and the requirement of the network structure to obtain a final network topology structure.

However, in the prior art, in the topology structure planning stage of the all-optical network, the network topology structure cannot be deeply optimized due to no service flow information, so that the line dimension of part of nodes is excessively consumed, and the optical fiber is excessively consumed and the network construction cost is excessively high due to unreasonable network topology structure planning. It can be seen that how to reasonably perform planning of the all-optical network is particularly important.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a method and a device for planning an ROADM all-optical network based on a WSON function, which can optimize an initial topological structure of the all-optical network according to traffic information, reduce fiber consumption and network construction cost, and are beneficial to improving the accuracy of network resource planning and further the rationality of planning the topological structure of the all-optical network.

In order to solve the technical problem, the first aspect of the present invention discloses a ROADM all-optical network planning method based on a WSON function, which comprises the following steps:

acquiring data information and service information in an all-optical network, wherein the all-optical network has an initial topological structure corresponding to the data information, 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;

According to the data information and the service information, planning a service working route in the all-optical network, planning a service electricity 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 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;

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

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 optimizing the initial topological structure according to the construction scale of the all-optical network and combining 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, the device comprises:

the system comprises an acquisition module, a data processing module and a service processing module, wherein the acquisition module is used for acquiring data information and service information in an all-optical network, wherein the all-optical network has an initial topological structure corresponding to the data information, 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 a 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 a business electricity relay node of a business work route in the all-optical network according to the data information and the business information;

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

the generation module is used for 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;

The acquisition module is further configured to acquire an affected risk service in an interrupt scenario corresponding to each shared risk link group;

the computing module is used for computing the service recovery optimal source and destination nodes of each risk service;

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

the statistics 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 according to the construction scale of the all-optical network and combining the predetermined optimization reference condition 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, the device comprises:

a memory storing executable program code;

a processor coupled to the memory;

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

A fourth aspect of the present invention discloses a computer-readable storage medium storing computer instructions that, when invoked, are used to perform a ROADM all-optical network planning method based on WSON functions 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, a service working route, a service electricity relay node and a service working route channel number 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 service recovery optimal source node, the service recovery electricity relay node, the service recovery route and the 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 route and the service recovery route, and the initial topological structure of the all-optical network is optimized by combining preset optimization reference conditions. Therefore, the invention can plan the service route according to the traffic information of the service, further optimize the initial topology structure of the all-optical network to obtain the optimized topology structure, reduce the fiber consumption and the network construction cost in the all-optical network, avoid the waste of network resources, and be beneficial to improving the accuracy of network planning and the rationality of network topology planning.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic flow diagram of a ROADM all-optical network planning method based on WSON function according to an embodiment of the 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 invention;

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

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The terms first, second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, apparatus, article, or article that comprises a list of steps or elements is not limited to only those listed but may optionally 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 may be included in at least one embodiment of the invention. The appearances of such phrases 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. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

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

Referring to fig. 1, fig. 1 is a flow chart of a ROADM all-optical network planning method based on WSON function according to an embodiment of the 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, which is not limited by the embodiment of the invention. As shown in fig. 1, the ROADM all-optical network planning method based on the WSON function may include the following operations:

101. and acquiring data information and service information in the all-optical network, wherein the all-optical network has an initial topological structure corresponding to the data information, 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 configured with ROADM equipment in the all-optical network; the links are optical cable sections formed by one or more optical cables between two adjacent nodes; the OMS (Optical Multiplex Section, optical multiplexing segment) is a DWDM system on a link, further, one or more OMS is/are in a link; one or more OMS in the shared risk link group (Shared Risk Link Groups), the OMS in the same shared risk link group being at risk of simultaneous interruption or simultaneous failure; traffic refers to wavelength level circuitry 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 serial numbers of all nodes in the all-optical network, 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; the OMS information in the all-optical network comprises one or more of codes of each OMS in all OMS in the all-optical network, a starting point name of the OMS, a starting point sequence number of the OMS, an end point name of the OMS, an end point sequence number of the OMS, a link sequence number of the OMS, a length of the OMS, a DGD value of the OMS, an OSNR value of the OMS, an equivalent span number of the OMS, and a service work routing attribute of the OMS; 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 the OMS within the shared risk link group.

In the embodiment of the present invention, optionally, the original service information in the all-optical network includes an OMS usage condition of an original service working route. Further, after the usage condition of the OMS of the original service work routes is obtained, each original service work route is read, and the identification of the service work is marked on each used OMS channel. The newly added service information comprises one or more of a name of a service association group, a starting point of the service, an ending point of the service, a name of a service passing through a node, an encoding of a service passing through an OMS, a name of a service passing through no node, an encoding of a service passing through no OMS and a recovery attribute of the service.

Therefore, in the embodiment of the invention, the data information and the service information in the all-optical network can be acquired, so that the accuracy and the effectiveness of the subsequent planning service work route can be improved, the network resources can be saved, and the rationality of the topology structure planning of the all-optical network can be improved.

102. And planning a service working route in the all-optical network according to the data information and the service information, planning a service electricity 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.

In the embodiment of the invention, the service working route refers to a route used by the service under the 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 optimizing the topology structure of the all-optical network can be improved, and the waste of network resources can be avoided.

In an alternative embodiment, planning a traffic working route in an all-optical network includes:

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

according to the service information, the service work route separation strategy and the service work route searching strategy, switching off the OMS of which the number of used channels reaches a set channel number threshold value and switching off the OMS which is not used for the service work route;

judging whether the current service exists any service of all original services and all newly added services without the OMS requirement according to the service information;

when judging that the current service exists without the OMS requirement, disconnecting the corresponding OMS; and/or judging whether the current service has unnecessary node requirements according to the service information;

when judging that the current service has the requirement of not passing through the node, disconnecting the starting point or the ending point to be all OMS which does not pass through the node.

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

In this optional embodiment, it can be seen that by determining whether the current service has an OMS-free requirement and/or an OMS-free requirement, and then determining whether to disconnect the corresponding OMS and/or the corresponding OMS-free requirement, the accuracy of working route planning for the all-optical network service can be improved, which is beneficial to avoiding waste of network resources, and further beneficial to improving rationality of topology optimization for the all-optical network.

In another alternative embodiment, the method further comprises:

when judging that the current service does not need to pass through OMS requirements and node requirements, acquiring an associated service route 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 judging that the current service is the service in the associated service group, disconnecting service routes OMS of all the services in the service group which does not comprise 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 judging that the current service is not the service in the associated service group, calculating the service working route between every two nodes according to the service working route searching strategy;

judging whether the current service has a necessary node requirement according to the service information;

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

Judging whether the current service has a request of passing OMS according to the service information;

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

and, the method further comprises:

judging whether the current service has a request of passing through a node and a request of passing through an OMS according to the service information;

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

In this alternative embodiment, when it is determined that the current service is a service in the associated service group, the service routing OMS of all the services in the service group that does not include the current service in the associated service group are disconnected, and all the OMS belonging to the same shared risk link group as the current service are disconnected in such a manner that the disconnection is performed according to an associated service working route separation policy, where the associated service working route separation policy includes a route separation policy and a node separation policy. For example, when the associated traffic route separation policy is a route separation policy and when an associated traffic group a group is planned, the OMS of traffic routes of all traffic groups except the associated traffic group a group are disconnected and all OMS of the same shared risk link group as the associated traffic group a group are disconnected. Further, when the associated service route separation policy node separates the policy and when planning the associated service group B, disconnecting the OMS of the service routes of all the service groups except the associated service group B and disconnecting all the OMS of the same shared risk link group as the associated service group B, reading the information of all the nodes except the start point and the end point of the associated service group B through which the service routes of the service groups except the associated service group B pass, setting all the nodes except the start point and the end point of the associated service group B as no-pass nodes of the associated service group B, and disconnecting all the OMS of all the nodes except the start point and the end point of the associated service group B.

In the alternative embodiment, when the current service is judged not to be the service in the associated service group, the service working route between every two nodes is calculated according to the service working route searching strategy, wherein the service working route searching strategy comprises a shortest path searching strategy, a minimum hop count searching strategy and a minimum cost searching strategy. When the service working route searching strategy is the shortest path strategy, working routes between every two nodes in the all-optical network are obtained through calculation by 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 in a certain error range, the route with the minimum hop count 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 an OSNR value of an OMS, an OSNR simulation calculation formula (58 formula) suggested by ITU-T and an algorithm after optimization of a shortest path algorithm, and further, when cost differences of a plurality of alternative routes exist in a certain error range, the route with the shortest length is selected. When the service working route searching strategy is the minimum hop count strategy, setting the length of OMS to be 1, and then calculating to obtain the working route between every two nodes in the all-optical network by utilizing a shortest path algorithm, and further, when the hop count difference of a plurality of alternative routes is in a certain error range, selecting the route with the shortest length.

In the alternative embodiment, if the current service has the requirement of passing through the node, node selection information from the starting point of the service to each passing through node is respectively obtained according to the service working route searching strategy, and the service working route is spliced according to each node selection information, wherein the node selection information is determined according to the service route searching strategy, and the node selection information comprises length information, hop count information and cost information. For example, if the current service has n nodes to be limited and the service working route searching policy is the shortest path searching policy, the length D1 from the start point of the current service to the first node to be passed, the length D2 from the start point of the current service to the second node to be passed, until the length Dn of the nth node to be passed is obtained, and the obtained lengths D1 to Dn are sorted from small to large to obtain a 1×n sequence of the current service to be passed, then the service working route of the current service is "the start point-sequence number 1 node" + "the sequence number 1 node-sequence number 2 node" of the service until the "sequence number n node-the end point of the service" is reached, and the splicing of the service working route of the current service is completed.

In this alternative embodiment, if the current service has a request of passing through the OMS, the start point and the end point of each of the passing through OMS of the current service are respectively obtained according to the service work route searching policy, the two connection nodes passing through the OMS are removed, the node selection information from the start point of the current service to each of the passing through nodes is obtained, and the service work route of the current service is spliced according to the node selection information from the start point of the current service to each of the passing through nodes. For example, if the current service has n routing policies that are required by the OMS and the service working routing policy is the shortest path routing policy, acquiring the starting points and the ending points of all the routing policies that are required by the OMS, obtaining 2n routing nodes, eliminating the two routing nodes that are required by the OMS, acquiring the length D1 from the starting point of the current service to the first routing node, the length D2 from the starting point of the current service to the second routing node, and sorting the acquired lengths D1 to Dn according to the order from small to large, eliminating another node that is required by the OMS and is identical to the sequence node to obtain a 1 xn sequence of the routing node that is required by the current service, and the service working route of the current service is from the starting point of the service to the sequence node 1 node of the service to the sequence node 2 node of the other end node of the OMS where the sequence number 1 is located to the sequence node of the sequence number n node.

It can be seen that, in this optional embodiment, by determining whether the current service is a service in the associated service group, if so, disconnecting the service route OMS of all the services in the service group that does not include the current service in the associated service group according to the service work route separation policy, and disconnecting all OMS belonging to the same shared risk link group as the current service; if not, judging whether the current service has the necessary node requirement and/or the necessary OMS requirement, and when the current service exists, splicing the service working routes according to the service working route searching 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 rationality of planning the service working routes can be further improved.

In yet another alternative embodiment, a service electrical relay node for planning a service work route in an all-optical network, includes:

calculating the cumulative OSNR value of all OMSs between the determined starting node and the determined ending node aiming at the service working route, wherein the initially determined ending node is a second node started by the starting node;

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, triggering the step of executing the calculation of the accumulated OSNR value of all OMS 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;

when the accumulated OSNR value is not larger than the OSNR tolerance value, judging whether the path node 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 business electric relay node;

and determining the service electric relay node as a new starting node aiming at the service working route, triggering and executing the step of calculating the accumulated OSNR value of all OMS between the determined starting node and the determined ending node, and triggering and executing the step of judging whether the accumulated OSNR value is larger than a preset OSNR tolerance value.

In the alternative embodiment, as the nodes with more optical lines can be favorable for recovering the detouring of the service and can save the electric relay number, the selection of the electric relay nodes can preferentially select the nodes with more optical lines as the electric relay nodes, so that the utilization rate of network resources can be improved, and the rationality of the planning of the all-optical network topology structure is favorable for being improved.

In this optional embodiment, it may be seen that, by calculating the cumulative OSNR value of all OMS between the determined starting node and the determined terminating node in the service working route, it is determined whether the cumulative OSNR value is greater than the OSNR tolerance value of the pre-device, and further, whether an electrical relay is needed is further determined, which can improve the accuracy of determining whether the electrical relay is needed in the service working route, and can avoid resource waste caused by too many set electrical relays.

In yet another alternative embodiment, the method further comprises:

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

and when the target electric relay is judged to exist, performing length adjustment operation on the target electric relay so as to update the length of the target electric relay and the starting node of the target electric relay, wherein the length adjustment operation indicates that the service electric relay nodes in the electric relay which do not meet the preset length requirement advance to the starting node direction of the service working route one by one until the length of the target electric relay meets the preset length requirement.

It can be seen that in this optional embodiment, by performing the length adjustment operation on the target electrical trunk, the target electrical trunk can meet the preset length requirement, so that the length of the target electrical trunk is uniform, so that signal transmission in the all-optical network can be more stable, and meanwhile, network resources and network construction cost are saved, and rationality of the topology planning of the all-optical network is improved.

In yet another alternative embodiment, planning a channel number for a traffic working route in an all-optical network includes:

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

when judging that the intersection exists among the idle channel numbers of all OMS, marking the channel corresponding to the idle channel number shared by all OMS as a newly-added working channel number;

when judging that the idle channel numbers of all OMS do not have intersection, sorting all OMS in the target electric relay section from high to low according to the channel utilization rate, replacing the target OMS with the same optical cable route OMS, wherein the channel utilization rate of the target OMS in all OMS in the target electric relay section meets the requirement of the preset utilization rate, so as to update all OMS in the target electric relay section, and triggering and executing the step of searching the idle channel numbers of all OMS in each target electric relay section again to judge whether the idle channel numbers of all OMS have intersection;

And, the method further comprises:

when the target OMS within the target electrical trunk cannot be replaced with the co-cable routing OMS, the OMS is newly added in the corresponding link in the target electrical trunk.

In this alternative 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.

In this alternative embodiment, the idle channel number shared by all OMS in each target electrical trunk is determined to be the newly-added working channel number by searching the idle channel number of all OMS in each target electrical trunk, and if all OMS in each target electrical trunk do not have the shared idle channel number, the target OMS with high usage rate is replaced by the same optical cable routing OMS or the newly-added OMS, so that the number of the newly-added OMS can be saved, the usage rate of channels in the OMS can be improved, further, the network resource 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. In this way, 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, so that the recovery of the risk service can be planned reasonably in a targeted manner.

In an optional embodiment, acquiring the affected risk service in the interruption scenario corresponding to each shared risk link group includes:

determining all OMS in each shared risk link group, judging whether all OMS in the service work route is overlapped with all OMS in the shared risk link group, wherein all OMS in the service work route comprises all OMS in the original service route and all OMS in the newly added service work route;

when judging that all OMS in the service work route overlap with all OMS in the shared risk link group, extracting the service corresponding to all OMS overlapping with the shared risk link group in the service work route into the interrupt scene corresponding to the shared risk link group, and taking the service as the affected risk service in the interrupt scene corresponding to the shared risk link group.

In this optional embodiment, it can be seen that by determining 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 the overlapping OMS into the interrupt scenario corresponding to the shared risk link group, as the risk service affected in the interrupt scenario corresponding to the shared risk link group, accuracy of acquiring the risk service can be improved, and rationality of planning the all-optical network is improved.

104. Calculating service recovery optimal source and destination nodes of each risk service, planning service recovery electric relay nodes of all risk services and service recovery routes of all risk services according to the service recovery optimal source and destination nodes of all risk services, and planning service recovery route channel numbers of all risk services.

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

In the embodiment of the invention, the service recovery optimal source and destination nodes of each risk service are calculated, the service recovery electric relay nodes and the service recovery routes of all risk services are planned according to the service recovery optimal source and destination nodes, and then the service recovery route channel numbers are planned, so that the waste of network resources can be avoided, the accuracy and the effectiveness of recovering the risk services can be improved, and the rationality of all-optical network planning is further improved.

In an alternative embodiment, calculating the service recovery optimal source-destination node of each risk service includes:

acquiring a service restoration route searching strategy of an all-optical network, disconnecting OMS (operation management system) of which the number of channels used in a service work route reaches a preset channel number threshold, disconnecting all OMS in an interruption scene corresponding to all shared risk link groups, and calculating the restoration route between every two nodes in a determined node set and the number of electric relay times required by the restoration route between every two nodes according to the service restoration route searching strategy, wherein the node set comprises a starting point of the service work route, an end point of the service work route and all service electric relay nodes of the service work 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 for each risk service, determining an optimal source and sink node required by the risk service for service recovery according to the number of electric relays 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.

In the optional embodiment, the optimal source and destination nodes required by service restoration are determined by calculating the number of electric relays required by the restoration route of each node, so that the waste of network resources can be avoided, the accuracy and effectiveness of the restoration risk service can be improved, and the rationality of all-optical network planning can be improved.

In another optional embodiment, planning a service recovery electrical relay node of all risk services and a service recovery route of all risk services according to a service recovery optimal source-destination node of all risk services includes:

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

aiming at the relay times of each target electricity, planning the electricity relay times corresponding to the needed optimal source and destination nodes as the service recovery electricity relay node and the service recovery route of each risk service in all risk services of the relay times of the target electricity.

In this alternative embodiment, it should be noted that there are multiple electrical relays corresponding to the optimal source-destination node required for service restoration by all risk services in all interruption scenarios.

In this optional embodiment, statistics and merging are performed according to the electrical relay times corresponding to the service recovery optimal source and destination nodes of all risk services, and then operations corresponding to the electrical relay times are performed, so that accuracy in calculating the electrical relay times can be improved, waste of network resources can be avoided, fiber consumption can be reduced, networking cost can be reduced, and further improvement of rationality of planning of an all-optical network topology structure is facilitated.

In yet another alternative embodiment, all target electrical relay times include 0, 1, 2 and 3, wherein, for each target electrical relay time, planning the electrical relay time corresponding to the required optimal source/sink node as the service recovery electrical relay node and the service recovery route of each risk service in all risk services of the target electrical relay time includes:

planning a service recovery route of each risk service in all risk services with the electrical relay frequency of 0 corresponding to the required optimal source and sink nodes;

calculating a recovery relay matrix table corresponding to all risk services with the electrical relay frequency of 1 corresponding to the required optimal source/sink node, and executing 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 according to the service of each risk service in all risk services with the electrical relay frequency of 1 corresponding to the optimal source/sink node required by the solution of the recovery relay matrix table, and updating the number of OTUs (optical transport unit) capable of being used for service recovery in each path node of the all-optical network;

After planning out service recovery electric relay nodes and service recovery routes of all risk services with the electric relay times of 1 corresponding to the required optimal source and sink nodes, calculating the number of all first to-be-selected nodes which are provided with redundant electric relay OTUs and can be used for service recovery of the risk service and the redundant electric relay OTUs of each first to-be-selected node for each risk service with the electric relay times of 2 corresponding to the required optimal source and sink nodes, and judging whether every two nodes in all first to-be-selected nodes can meet the network performance requirements when the risk service is recovered to obtain a judging result; planning a service recovery electric relay node and a service recovery route of the risk service according to the judging result;

after planning out service recovery electric relay nodes and service recovery routes of each risk service in all risk services with the electric relay times of 2 corresponding to the required optimal source and sink nodes, calculating the number of all second to-be-selected nodes which are provided with redundant electric relay OTUs and can be used for service recovery of the risk service and the number of redundant electric relay OTUs of each second to-be-selected node for each risk service with the electric relay times of 3 corresponding to the required optimal source and sink nodes, and judging whether any three second to-be-selected nodes in all to-be-selected nodes can meet the network performance requirements when the risk service is recovered or not, so as to obtain a judging result; and planning a service recovery electric relay node and a service recovery route of the risk service according to the judging result.

In the alternative embodiment, further, when the number of electrical relays corresponding to the required optimal source and destination nodes is planned to be greater than 3, the topology design 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 node can be improved, and the reasonability of planning the all-optical network is improved.

Therefore, in the optional embodiment, by planning the required electrical relay times corresponding to the optimal source and destination nodes and then executing the operations corresponding to the electrical relay times on different electrical relay times, 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 all-optical network planning can be improved.

In yet another alternative embodiment, planning the traffic restoration routing channel numbers for all risk traffic includes:

acquiring the number of OMS (operation management system) needed for recovering all risk services in the interrupt scenes corresponding to all the shared risk link groups, and sequencing according to the number of OMS, wherein in the interrupt scenes corresponding to all the shared risk link groups, judging whether channel numbers marked as shared recovery channels exist in all OMS in all the recovery electric relay segments by taking the recovery electric relay segments in the service recovery route as units;

When judging that all OMS in all the recovery electric relay sections have channel numbers marked as shared recovery, re-triggering and executing the step of judging whether all OMS in the recovery electric relay sections have channel numbers marked as shared recovery or not until the planning of the service recovery route channel is completed;

when judging that the channel numbers marked as shared recovery are not existed in all OMS in all recovery electric relay segments, judging whether intersection exists in idle channel numbers of all OMS in all recovery electric relay segments;

when judging that the intersection exists among the idle channel numbers of all OMS in all the recovery electric relay segments, marking the channel corresponding to the idle channel number shared by all the OMS as the channel number for sharing recovery, and re-triggering and executing the step of judging whether the channel number marked as the channel number for sharing recovery exists in all the OMS in the recovery electric relay segments or not until the planning of the service recovery route channel is completed;

when judging that the intersection does not exist among the idle channel numbers of all OMS in all the recovery electric relay sections, sequencing all OMS in all the recovery electric relay sections from high to low according to channel utilization rate, replacing a first target OMS of which the channel utilization rate in all OMS in all the recovery electric relay sections meets the preset utilization rate requirement with an on-link OMS so as to update all OMS in the recovery electric relay sections, and triggering and executing to judge whether the channel numbers marked as shared recovery channel numbers exist in all OMS in all the recovery electric relay sections;

And, the method further comprises:

when the first target OMS can not be replaced by the same-link OMS, the OMS is newly added in the link corresponding to the recovery electric relay section, and service recovery route channel numbers of all risk services are planned through the newly added OMS.

In this optional embodiment, it can be seen that, by acquiring the number of OMS needed for recovering all risk services in the outage scenario corresponding to all shared risk link groups and planning channel numbers of all OMS in all recovery electric hops, the number of newly added OMS can be saved, the usage rate of channels in OMS can be improved, thereby being beneficial to saving network resources and improving the rationality of planning service working routes.

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 work route comprises at least one of a service work route, a service work route electric relay node and a service work 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 OTUs of the service newly added by the node, the number of OTUs of the electrical relay newly added by the node for the service working route, the number of channels used by the OMS for the service working route, the number of OTUs of the electrical relay newly added by the service node for the restoration route, and the number of 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 OTU configuration and the channel planning condition of OMS in the all-optical network.

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 consumption of optical fibers can be reduced, the construction cost can be reduced, and the rationality of planning the all-optical network can be improved.

106. And according to the construction scale of the all-optical network, optimizing the initial topological structure by combining the predetermined optimization reference condition to obtain the optimized target topological structure.

In the embodiment of the invention, the initial topology 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 topology structure of the all-optical network can be improved, and the rationality of planning the all-optical network can be improved.

In another alternative embodiment, according to the construction scale of the all-optical network, the initial topology structure is optimized according to the predetermined optimization reference condition, and the optimized target topology structure is obtained, which includes:

and determining the number of newly-increased used channels which can be directly connected by an optical layer between every two adjacent OMS according to the construction scale of the all-optical network, if the number of the newly-increased used channels which can be directly connected by the optical layer between every two adjacent OMS is larger than a preset channel number threshold, not setting ROADM nodes at the connection points of the two OMS, 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 the alternative embodiment, by determining the number of channels which are used in the optical layer direct connection between all adjacent OMS, judging whether the number of channels is larger than the preset threshold value of the number of channels, further determining whether to set ROADM nodes at the connection points of the two OMS, and according to the predetermined optimization reference condition, the waste of network resources can be avoided, the accuracy of optimizing the topology structure of the all-optical network can be improved, and further the rationality of planning the all-optical network can be improved.

Therefore, 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 acquiring the data information and the service information in the all-optical network, generating an interruption scene corresponding to each shared risk link group according to the link group information of each shared risk link group, acquiring all affected services in the interruption scene, calculating the optimal source and destination node, the service restoration electrical relay node, the service restoration route and the service restoration route channel number of each risk service for service restoration, 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 restoration route, and optimizing the topology structure of the initial all-optical network by combining with the predetermined optimized reference condition, so that the optical fiber consumption and the network construction cost can be reduced, network resources can be saved, and the rationality and accuracy of the 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 WSON function according to an embodiment of the invention. The apparatus described in fig. 2 may be applied to a network planning apparatus, which is not limited by the embodiment of the present invention. 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 newly added service information in the all-optical network.

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.

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

And the third planning module 204 is configured to plan a service working route 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 outage 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 201 is further configured to obtain the risk service affected in the outage scenario corresponding to each shared risk link group.

And the calculating module 206 is configured to calculate a service recovery optimal source-destination node of each risk service.

And the fourth planning module 207 is configured to plan a service recovery electrical relay node of all risk services and a service recovery route of all risk services according to the service recovery optimal source and destination nodes of all risk services, and plan a service recovery route channel number of all risk services.

And the statistics 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 recovery route.

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

Therefore, the device described in fig. 2 can plan the service route according to the traffic information of the service, and further optimize the initial topology structure of the all-optical network to obtain an optimized topology structure, so that the fiber consumption and the network construction 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:

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

And a disconnection sub-module 2022, configured to disconnect the OMS that has used the channel number up to the set channel number threshold and disconnect the OMS that is not used for the service working route according to the service information and service working route separation policy and the service working route searching policy.

A first judging submodule 2023 is configured to judge whether the current service exists without the OMS requirement according to the service information, where the current service is any service 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 exists without the OMS requirement;

the first judging submodule 2023 is further configured to judge whether the current service has a requirement of not passing through the node according to the service information.

The disconnection sub-module 2022 is further configured to disconnect all OMS whose starting point or end point is the unnecessary node when the first determination sub-module 2023 determines that the current service exists the unnecessary node.

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

In another alternative embodiment, as shown in fig. 2, the obtaining submodule 2021 is further configured to obtain the associated service route separation policy in the all-optical network and the associated service information in the all-optical network when the first judging submodule 2023 judges that the current service does not have to be not required by the OMS and does not have to be required by the nodes.

The first judging submodule 2023 is further configured to judge 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, where the associated service group includes a first service group and a second service group.

The disconnection submodule 2022 is further configured to disconnect the service routing OMS of all the services in the service group that does not include the current service in the associated service group and disconnect all OMS belonging to the same shared risk link group as the current service when the first judgment submodule 2023 judges that the current service is a service in the associated service group.

The first planning module 202 further includes:

the first calculating submodule 2024 is configured to calculate a service working route between every two nodes according to the service working route searching policy when the first judging submodule 2023 judges that the current service is not the service in the associated service group.

The first judging submodule 2023 is further configured to judge whether the current service has a request of passing through the node according to the service information.

And a splicing submodule 2025, configured to splice service working routes according to the requirement of the necessary node when the first judging submodule 2023 judges that the current service has the requirement of the necessary node.

The first judging submodule 2023 is further configured to judge whether the current service has a requirement of passing the OMS according to the service information.

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

The first judging submodule 2023 is further configured to judge whether the current service has a request to go through the node and a request to go through the OMS according to the service information.

And a closing sub-module 2026, configured to close all OMS except the OMS without idle channel resources when the first judging sub-module 2023 judges that the current service does not have the necessary node requirement and the necessary 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 calculation submodule 2031, configured to calculate cumulative OSNR values of all OMS between the determined start node and the determined end node for the service work route, where the initially determined end node is a second node from the start node;

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

a determining submodule 2033, configured to determine a next neighboring node of the termination node as a new termination node when the second determining submodule 2032 determines that the cumulative OSNR value is greater than the OSNR tolerance value, and trigger the step of calculating the cumulative OSNR values of all OMS between the start node and the determined termination node and the step of determining whether the triggered cumulative OSNR value is greater than the OSNR tolerance value set in advance;

the determining submodule 2033 is further configured to, when the second judging submodule 2032 judges that the cumulative OSNR value is not greater than the OSNR tolerance value, sequentially judge whether a path node can be used for electric relay from a node previous to the termination node toward the direction of the start node, and when it is judged that a certain path node can be used for electric relay, set the path node as a service electric relay node;

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 step of performing calculation to determine an accumulated OSNR value of all OMS between the determined start node and the determined end node, and trigger the step of performing judgment to determine whether the accumulated OSNR value is greater than a preset OSNR tolerance value.

It can be seen that implementing the apparatus described in fig. 2 can improve accuracy of determining whether the service working route needs an electrical relay, avoid resource waste caused by too many electrical relays, and further, by preferentially selecting the node with too many optical line directions as the electrical relay node, reduce the number of electrical relays, thereby being beneficial to saving network resources, saving networking cost and improving rationality of all-optical network topology planning.

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

a second judging submodule 2032, configured to further judge whether a target electric junction segment that does not meet the preset length requirement exists;

The second planning module 203 further comprises:

and an execution submodule 2034, configured to, when the second determination submodule 2032 determines that the target electric trunk exists, perform a length adjustment operation on the target electric trunk to update the length of the target electric trunk and the start node of the target electric trunk, where the length adjustment operation indicates that the service electric trunk nodes in the electric trunk that do not meet the preset length requirement advance toward the start node direction of the service working route one by one until the length of the target electric trunk meets the preset length requirement.

Therefore, the implementation of the device described in fig. 2 can make the length of the target electrical trunk meet the preset length requirement, so that the signal transmission in the all-optical network can be more stable, and meanwhile, the network resource and the network construction cost are saved, and the rationality of the topology structure planning of the all-optical network is improved.

In yet another alternative embodiment, as shown in fig. 2, the third planning module 204 plans the channel number of the service working route in the all-optical network in a specific manner:

Therefore, the implementation of the device described in fig. 2 can save the number of new OMS, and can improve the utilization rate of channels in the OMS, thereby being beneficial to saving network resources and improving the rationality of planning service work routes.

In yet another alternative embodiment, as shown in fig. 2, the manner in which the obtaining module 201 obtains the affected risk service in the interruption scenario corresponding to each shared risk link group is specifically:

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

In yet another alternative embodiment, as shown in fig. 2, the calculating module 206 calculates the service recovery optimal source and destination node of each risk service specifically includes:

Therefore, the implementation of the device described in fig. 2 can avoid the waste of network resources, and can improve the accuracy and effectiveness of the recovery risk 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 manner in which the fourth planning module 207 plans the service recovery electrical relay node of all risk services and the service recovery route of all risk services according to the service recovery optimal source-destination node of all risk services is specifically:

Therefore, the device described in fig. 2 can improve the accuracy of calculating the relay times, avoid the waste of network resources, reduce the fiber consumption and the networking cost, and further facilitate improving the rationality of the topology planning of the all-optical network.

In yet another alternative embodiment, as shown in fig. 2, all the target electrical relay numbers include 0, 1, 2 and 3, where, for each target electrical relay number, the manner in which the fourth planning module 207 plans, for each target electrical relay number, the service recovery electrical relay node and the service recovery route of each risk service in all the risk services for which the optimal source and destination node corresponds to the required electrical relay number is specifically:

Therefore, the implementation of the device 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 node, thereby being beneficial to improving the rationality of planning the all-optical network.

In yet another alternative embodiment, as shown in fig. 2, the manner in which the fourth planning module plans 207 the service restoration route channel numbers of all risk services is specifically:

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

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

Example III

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

A memory 301 storing executable program code;

a processor 302 coupled with the memory 301;

processor 302 invokes executable program code stored in memory 301 to perform the steps in the ROADM all-optical network planning method based on WSON functionality described in embodiment one of the invention.

Example IV

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

Example five

An embodiment of the present invention discloses a computer program product comprising a non-transitory computer readable storage medium storing a computer program, and the computer program is operable to cause a computer to perform the steps of the ROADM all-optical network planning method based on WSON functions described in embodiment one.

The apparatus embodiments described above are merely illustrative, wherein the modules illustrated as separate components may or may not be physically separate, and the components shown as modules may or may not be physical, i.e., may be located in one place, or may be distributed over 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 this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.

From the above detailed description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course by means of hardware. Based on such understanding, the foregoing technical solutions may be embodied essentially or in part in the form of a software product that may be stored in a computer-readable storage medium including Read-Only Memory (ROM), random-access Memory (Random Access Memory, RAM), programmable Read-Only Memory (Programmable Read-Only Memory, PROM), erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), one-time programmable Read-Only Memory (OTPROM), electrically erasable programmable Read-Only Memory (EEPROM), compact disc Read-Only Memory (Compact Disc Read-Only Memory, CD-ROM) or other optical disc Memory, magnetic disc Memory, tape Memory, or any other medium that can be used for computer-readable carrying or storing data.

Finally, it should be noted that: the embodiment of the invention discloses a ROADM all-optical network planning method and device based on a WSON function, which are disclosed by the embodiment of the invention only for illustrating the technical scheme of the invention, but not limiting the technical scheme; although the invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that; the technical scheme recorded in the various embodiments can be modified or part of technical features in the technical scheme can be replaced equivalently; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. A ROADM all-optical network planning method based on WSON functions, the method comprising:

2. The ROADM all-optical network planning method based on the WSON function according to claim 1, wherein the planning the service working route in the all-optical network comprises:

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

judging whether the current service exists in any service of all original services and all newly added services without the OMS requirement according to the service information;

when judging that the current service has the requirement of not passing through an OMS, disconnecting the corresponding OMS; and/or the number of the groups of groups,

judging whether the current service has unnecessary node requirements according to the service information;

and when judging that the current service has the requirement of not passing through the node, disconnecting the starting point or the ending point to be all OMS which does not pass through the node.

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

When judging that the current service does not have the request without going through OMS and the request without going through node, acquiring an associated service route 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 judging that the current service is the service in the associated service group, disconnecting service routing OMS of all the services in the service group which does not comprise 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 judging that the current service is not the service in the associated service group, calculating a service working route between every two nodes according to the service working route searching strategy;

when judging that the current service has the requirement of the necessary node, splicing service working routes according to the requirement of the necessary node; and/or

Judging whether the current service has a request of passing an OMS according to the service information;

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

and, the method further comprises:

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

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

4. A ROADM all-optical network planning method based on WSON function according to claim 3, wherein the planning of the service electricity relay node of the service working route in the all-optical network comprises:

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, triggering and executing the step of calculating the accumulated OSNR value of all OMS between the starting node and the determined termination node and triggering the step of judging whether the accumulated OSNR value is larger than a preset OSNR tolerance value;

When judging that the accumulated OSNR value is not greater than the OSNR tolerance value, sequentially judging whether a path node can be used for electric relay from the previous node of the termination node towards 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 business electric relay node;

5. The ROADM all-optical network planning method based on the WSON function according to claim 4, wherein the method further comprises:

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

6. The ROADM all-optical network planning method based on the WSON function according to claim 5, wherein the planning the channel number of the service working route in the all-optical network includes:

when judging that the idle channel numbers of all OMS do not have intersection, sorting all OMS in the target electric relay from high to low according to channel utilization rate, replacing the target OMS with the same optical cable route OMS with which the channel utilization rate in all OMS in the target electric relay meets the preset utilization rate requirement so as to update all OMS in the target electric relay, and re-triggering and executing the steps of searching the idle channel numbers of all OMS in each target electric relay and judging whether the idle channel numbers of all OMS have intersection;

and, the method further comprises:

And when the target OMS in the target electric relay cannot be replaced by the same-cable routing OMS, adding OMS in a corresponding link in the target electric relay.

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

determining all OMS in each shared risk link group, and judging whether all OMS in the service work route overlaps with all OMS in the shared risk link group, wherein all OMS in the service work route comprises all OMS in the original service route and all OMS in the newly added service work route;

when it is judged that all OMS in the service working route overlap with all OMS in the shared risk link group, extracting the service corresponding to all OMS overlapping 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 service as the affected risk service in the interruption scene corresponding to the shared risk link group.

8. The ROADM all-optical network planning method based on the WSON function according to claim 7, wherein the computing the service recovery optimal source-destination node of each risk service includes:

Acquiring a service restoration route searching strategy of the all-optical network, disconnecting all OMSs in an interruption scene corresponding to all shared risk link groups when the number of channels used in the service working route reaches a preset channel number threshold, and calculating the restoration route between every two nodes and the number of electric relays required by the restoration route between every two nodes in a determined node set according to the service restoration route searching 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 work route as a unit;

and for each risk service, determining an optimal source and destination node required by service recovery of the risk service according to the number of electric relays 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 the WSON function according to claim 8, wherein the planning of the service recovery electrical relay node of all the risk services and the service recovery route of all the risk services according to the service recovery optimal source and destination nodes of all the risk services includes:

combining the same electric relay times in the electric relay times corresponding to the optimal source and destination nodes required by service recovery of all the risk services in the interruption scene to obtain a plurality of target electric relay times with different sizes;

aiming at each target electric relay time, planning the electric relay time corresponding to the required optimal source and sink node as the service recovery electric relay node and the service recovery route of each risk service in all risk services of the target electric relay time.

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

the step of planning the required optimal source and sink node corresponding electrical relay times for each target electrical relay times to be the service recovery electrical relay node and the service recovery route of each risk service in all risk services of the target electrical relay times comprises the following steps:

calculating a recovery relay matrix table corresponding to all risk services with the electrical relay frequency of 1 corresponding to the required optimal source and sink nodes, 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 in all risk services with the electrical relay frequency of 1 corresponding to the optimal source and sink nodes according to the solution of the recovery relay matrix table, and updating the number of OTU (optical transport unit) capable of being used for service recovery in each path node of the all-optical network;

after planning out service recovery electric relay nodes and service recovery routes of each risk service in all risk services with the electric relay times of 1 corresponding to the required optimal source and sink nodes, calculating the number of all first to-be-selected nodes which are provided with redundant electric relay OTUs and can be used for service recovery of the risk service and the redundant electric relay OTUs of each first to-be-selected node for judging whether two to two nodes in all first to-be-selected nodes can meet the network performance requirements of the risk service during service recovery, and obtaining a judging result; planning a service recovery electric relay node and a service recovery route of the risk service according to the judging result;

11. The ROADM all-optical network planning method based on the WSON function according to claim 10, wherein the planning of the service restoration route channel numbers of all the risk services includes:

acquiring the number of OMS (operation management system) needed for recovering all the risk services in the interrupt scenes corresponding to all the shared risk link groups, sequencing the OMS according to the number from more to less, and judging whether channel numbers marked as shared recovery exist in all OMS in all the recovery electric relay sections by taking the recovery electric relay sections in the service recovery route as units in the interrupt scenes corresponding to each shared risk link group;

When judging that all OMS in all the recovery electric relay segments have the channel numbers marked as shared recovery, re-triggering and executing the step of judging whether all OMS in the recovery electric relay segments have the channel numbers marked as shared recovery or not until the service recovery route channel planning is completed;

when judging that the channel numbers marked as shared recovery are not existed in all OMS in all the recovery electric relay segments, judging whether intersection exists between idle channel numbers of all OMS in all the recovery electric relay segments;

when judging that the intersection exists among the idle channel numbers of all OMS in all the recovery electric relay segments, marking the channel corresponding to the idle channel number shared by all the OMS as the channel number for sharing recovery, and re-triggering and executing the step of judging whether the channel number marked for sharing recovery exists in all the OMS in the recovery electric relay segments or not until the planning of the service recovery route channel is completed;

when it is determined that there is no intersection of idle channel numbers of all OMS in all the recovery electric hops, sorting all the OMS in all the recovery electric hops from high to low according to the channel usage rate, replacing a first target OMS in all the recovery electric hops, where the channel usage rate meets a preset usage rate requirement, with an on-link OMS to update all the OMS in the recovery electric hops, and retriggering to execute the determination of whether channel numbers marked for shared recovery exist in all the OMS in all the recovery electric hops;

And, the method further comprises:

and when the first target OMS cannot be replaced by the same-link OMS, newly adding the OMS in the link corresponding to the recovery electric relay, and planning the service recovery route channel numbers of all the risk services through the newly added OMS.

12. The ROADM all-optical network planning method based on the WSON function according to 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 includes:

and determining the number of newly-increased used channels which can be directly connected by an optical layer between every two adjacent OMS according to the construction scale of the all-optical network, if the number of newly-increased used channels which can be directly connected by the optical layer between every two adjacent OMS is larger than a preset channel number threshold, not setting ROADM nodes at the connection points of the two OMS, 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 device based on WSON function, the device comprising:

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

a memory storing executable program code;

a processor coupled to the memory;

the processor invokes the executable program code stored in the memory to perform the method of ROADM all-optical network planning based on WSON functionality as claimed in any of claims 1-12.

15. A computer-storable medium storing computer instructions that, when invoked, perform a method of ROADM all-optical network planning based on WSON functions according to any of claims 1-12.