CN114363737A - Optical transmission network resource optimization configuration method, system and storage medium thereof - Google Patents
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Abstract
The invention discloses a method, a system and a storage medium for optimizing and configuring optical transmission network resources, wherein the method for optimizing and configuring the optical transmission network resources comprises the following steps: step 1, constructing a system model of an optical transmission network; step 2, selecting a preset link as a resource alternative link set L based on a business balance principle; step 3, adding a service equalization coefficient to the alternative link set L; step 4, adding a link cost coefficient to the alternative link set L based on the link cost; and 5, dynamically configuring the load path based on the service balance coefficient and the link cost coefficient, and realizing the optimal configuration of the optical transmission network resources. The invention fully utilizes the idea of service balance and comprehensively considers the path cost of the link to carry out dynamic configuration of the load path under the scene that link communication quality is reduced or the link fails because of uneven link resource distribution, thereby improving the communication service quality and the service reliability of the optical transmission network and reducing the comprehensive bearing cost of the network.
Description
Technical Field
The invention relates to the technical field of power system communication, in particular to an optical transmission network resource optimal configuration method, system and storage medium considering service balance and link cost.
Background
As a second entity network coexisting with the power grid, the power communication network bears important services such as power production, scheduling, marketing, management and the like, and is an indispensable strategic, fundamental and precedent resource for the national power grid company to build the energy internet. With the continuous development of the power communication network, higher requirements are put on the stability, availability, flexibility and intelligence level of the power communication system, and the existing power communication network has encountered functional or performance bottlenecks. The electric power optical communication network provides communication channel basic service for units such as a power supply station, all levels of transformer substations, power plants and the like, and service objects are mainly power scheduling, production, marketing and administrative offices. The existing electric power optical communication network takes SDH/MSTP as a main technical system, WDM/OTN technical networking is adopted in partial regions, an electric power system network and provincial and regional level networking mainly adopt 2.5/10G SDH or OTN + SDH to construct a backbone optical transmission network, and the capacities of an access layer and a convergence layer are 155Mb/s-622 Mb/s. The networking mode mostly adopts a common SDH looped network mode, and the scheduling of the service among the rings is basically realized through the branch switching of the equipment among the large nodes. The load-bearing service types comprise an EMS power grid dispatching automation system, a substation automation system, relay protection and safety automation device information, substation video monitoring, dispatching telephones, conference televisions, management information systems, administrative telephones, office automation and the like.
With the rapid development of technologies such as artificial intelligence, cloud computing, mobile communication, high-definition video and the like. Under the service application of high-speed growth, the mutual superposition of different network resources creates various network operation environments, and the network resource management and the network cost control become complex continuously. With the rapid increase of the broadband network flow, the increase of the capacity expansion cost and the increasing increase of the complexity of the power communication network, great challenges are brought to the operation and maintenance of the power communication network, how to perform resource joint scheduling, the flow control capacity is improved, more intelligent pipeline services are provided, and the method has important significance for more flexible bearing of power services.
Disclosure of Invention
Aiming at the problems, the optical transmission network resource optimal configuration method considering the service balance and the link cost can fully utilize the idea of the service balance and comprehensively consider the path cost of the link to carry out dynamic configuration on the load path under the scene that the link communication quality is reduced or the link fails due to uneven link resource distribution, thereby improving the communication service quality and the service reliability of the optical transmission network.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the invention relates to an optimal configuration method of optical transmission network resources, which comprises the following steps:
and 5, dynamically configuring the load path based on the service balance coefficient and the link cost coefficient, and realizing the optimal configuration of the optical transmission network resources.
The specific method in the step 2 is as follows: based on the service balancing principle, in the link flow limiting range, a preset number of links closest to the topology service balancing scene are selected as a resource allocation alternative link set L.
The above-mentioned traffic balanced distribution model on the link is as follows:
s.t.ΔPl＝Pnew+Pl-Pavg
pnew is newly added load traffic, Pl is original traffic of a certain link l between nodes i and j, Pavg is traffic distributed to each link in an ideal state by the whole system according to an equal distribution principle after Pnew is added, and PlmaxAnd E is a total link set, and delta Pl is the newly added load traffic plus the difference between the original traffic on the link l and the ideal traffic according to the equipartition principle, so that the link l corresponding to the minimum delta Pl is the optimal link distribution result of the service.
The selection steps of the alternative link set L are as follows:
step 2.1, solving an optimal link l in all links;
step 2.2, optimally solving all the remaining links except l in the total link set E until k links are selected;
step 2.3, forming an alternative link set L ═ { L | L ═ L1,l2,…lk}。
In step 3, the alternative link set L is ordered according to the number of times as follows: link lb1-lbkWith the addition of an equalization coefficient of
Wherein n is the rank number, and n is more than or equal to 1 and less than or equal to k.
In step 4, the costs of the links in the alternative link set L are respectively calculated and sorted as follows: lc1-lckThe additional link cost factor is
Wherein n is the rank number, and n is more than or equal to 1 and less than or equal to k.
And (4) adding the service balance coefficients and the link cost coefficients of the same link in the steps (3) and (4) and sequencing, selecting the link with the highest addition coefficient, and distributing the new service to the link to realize the optimal configuration of the optical transmission network resources.
An optical transmission network resource optimal configuration system comprises
The system model building module is used for building a system model for the optical transmission network;
the alternative link set determining module is used for selecting a preset link as an alternative link set L of the resource based on a service balancing principle;
a service equalization coefficient determining module, configured to add a service equalization coefficient to the alternative link set L;
a link cost coefficient determination module, configured to add a link cost coefficient to the alternative link set L based on the link cost;
and the dynamic configuration module is used for dynamically configuring the load path based on the service balance coefficient and the link cost coefficient to realize the optimal configuration of the optical transmission network resources.
The alternative link set determining module is specifically configured to select, based on a service balancing principle, a preset number of links closest to a topology service balancing scenario within a link flow limiting range as an alternative link set L for resource configuration;
the model of the balanced distribution of the service on the link is as follows:
s.t.ΔPl＝Pnew+Pl-Pavg
pnew is newly added load traffic, Pl is original traffic of a certain link l between nodes i and j, Pavg is traffic distributed to each link in an ideal state by the whole system according to an equal distribution principle after Pnew is added, and PlmaxThe maximum allowable traffic of the link l is limited, E is a total link set, and the delta Pl is the newly added load traffic plus the difference between the original traffic on the link l and the ideal traffic according to the equipartition principle, so that the link l corresponding to the minimum delta Pl is the optimal link distribution result of the service;
the selection steps of the alternative link set L are as follows:
step 2.1, solving an optimal link l in all links;
step 2.2, optimally solving all the remaining links except l in the total link set E until k links are selected;
step 2.3, forming an alternative link set L ═ { L | L ═ L1,l2,…lk}；
The alternative link set L is ordered according to times as follows: link lb1-lbkWith the addition of an equalization coefficient of
Respectively calculating the cost of the links in the alternative link set L, and sequencing the links, wherein the sequencing comprises the following steps: lc1-
lckThe additional link cost factor is
Wherein n is a ranking number, and n is more than or equal to 1 and less than or equal to k;
adding the service balance coefficients and the link cost coefficients of the same link and sequencing, selecting the link with the highest addition coefficient, and distributing the new service to the link to realize the optimal configuration of the optical transmission network resources.
A computer storage medium, which stores a program for optimal configuration of optical transmission network resources, the program for optimal configuration of optical transmission network resources implementing the steps of the above method for optimal configuration of optical transmission network resources when executed by at least one processor.
The invention has the beneficial effects that:
1. and the reliability and the economy of resource allocation are realized by comprehensively considering two factors of service balance and link cost.
2. The dynamic configuration of the load path can be carried out under the condition that link communication quality is reduced or a link fails due to uneven link resource allocation.
3. And constructing an alternative link set for service balance, and setting a service balance coefficient and a link cost coefficient, wherein the number of links in the alternative link set, the service balance coefficient and the link cost coefficient can be artificially defined and modified so as to adapt to different scene requirements of an optical transmission network in the power system.
Drawings
Fig. 1 is a link comprising six nodes.
FIG. 2 is a link diagram containing three paths of ABC.
Fig. 3 is a flowchart of the method for optimally configuring the resources of the optical transmission network.
Detailed Description
In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the embodiments of the invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary.
Referring to fig. 3, the present invention is a method for optimally configuring optical transmission network resources considering service balance and link cost, including the following steps:
Simplifying a fiber network in a certain area to be (V, E), wherein V is a set of network nodes, E is a set of bidirectional links between nodes, and L is usedijRepresenting the traffic limit between nodes i and j.
As shown in fig. 1: the figure contains 1-6 six nodes, <1,2> <1,3> <1,5> <2,6> <3,4> <4,5> <5,6> seven paths, each path having a pair of bidirectional links.
In the scenario of transmitting a scheduling command by a power system, a service refers to a scheduling command responding to a load demand. Taking fig. 2 as an example, 1-6 refer to each scheduling node, and the numerical value labeled for each link refers to the existing load traffic. If a new piece of scheduling information needs to be transmitted from 1 to 5 scheduling nodes, wherein the new piece of scheduling information contains 100kW load demand response information, three ABC paths are selected. Based on the existing load traffic, the optimal path is then B (as shown by the dashed line), followed by C, and finally a.
Then the model for making the traffic equal distribution over the link is as follows:
s.t.ΔPl＝Pnew+Pl-Pavg
pnew is newly added load traffic, Pl is original traffic of a certain link l between nodes i and j, Pavg is traffic (ideal state) distributed to each link by the whole system according to an equal distribution principle after Pnew is added, and Plmax is maximum allowable traffic limit of the link l. E is the total link set and Δ Pl is the newly added load traffic plus the difference between the original traffic on link l and the ideal traffic according to the equipartition principle, which should be the smallest and the best. The l link corresponding to the minimum Δ Pl is the optimal link allocation result of the service.
However, considering the link cost and the link distance, the link which does not satisfy the above optimal condition is the actual optimal solution, and if the Δ Pl values corresponding to the two links are the same or similar, the link cost and the link distance need to be considered. Therefore, a certain number k (k may be arbitrarily designated, 1/5 is usually selected as the total number of links, k is 2 when the total number of links does not satisfy 5, and k is 3 when the total number of links is greater than 5 and not greater than 10) is determined as the candidate link set. The alternative link set selection method comprises the following steps:
the alternative link set selecting steps are as follows:
step 2.1, solving the optimal link l in all links according to the formula;
step 2.2, optimally solving all the remaining links except l in the total link set E until k links are selected;
step 2.3, forming an alternative link set L ═ { L | L ═ L1,l2,…lk}。
the additional equalization coefficients are shown in table 1:
on the left are solved, time-ordered links lbThe subscripts indicate the ordering.
TABLE 1 additional equalization coefficients
| Link circuit | Coefficient of equalization |
| lb1 | 1 |
| lb2 | (k-1)/k |
| … | … |
| |
2/ |
| l | |
| bk | 1/k |
And 4, on the basis of the service balance, different costs of different bandwidths of the optical fiber network are also considered.
The corresponding costs for different bandwidths of the optical fiber network are shown in table 2:
TABLE 2 different Bandwidth correspondence costs for fiber optic networks
| Link bandwidth | Cost value |
| 4Mb/s | 250 |
| 10Mb/s | 100 |
| 16Mb/s | 62 |
| 100Mb/s | 19 |
| 1Gb/ |
4 |
| 10Gb/ |
2 |
Therefore, for the link l in the alternative link set solved in step 3iRespectively calculating the cost, sorting the cost and adding a link cost coefficient, wherein the additional link cost coefficient is shown in a table 3;
wherein, the left column represents the link cost ordering, and the right side corresponds to the link cost coefficient;
TABLE 3 additional Link cost factor
| Link cost ordering | Link cost coefficient |
| lc1 | 1 |
| lc2 | (k-1)/k |
| … | … |
| |
2/ |
| l | |
| ck | 1/k |
And 5, fusing the service balance coefficient and the link cost coefficient to dynamically configure the load path, so as to realize the optimal configuration of the optical transmission network resources.
And adding the service equalization coefficients and the link cost coefficients of the same link in the two tables and sequencing. The links in table 1 and table 3 are the same, but are ordered according to different criteria, one is based on the service balance, and the other is based on the link cost. And selecting the link with the highest addition coefficient, thereby distributing the new service to the link and realizing the optimal configuration of the optical transmission network resources.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Claims (10)
1. A method for optimizing and configuring optical transmission network resources is characterized in that: the method comprises the following steps:
step 1, constructing a system model of an optical transmission network;
step 2, selecting a preset link as a resource alternative link set L based on a business balance principle;
step 3, adding a service equalization coefficient to the alternative link set L;
step 4, adding a link cost coefficient to the alternative link set L based on the link cost;
and 5, dynamically configuring the load path based on the service balance coefficient and the link cost coefficient, and realizing the optimal configuration of the optical transmission network resources.
2. The method for optimal configuration of optical transmission network resources according to claim 1, wherein: the specific method in the step 2 is as follows: based on the service balancing principle, in the link flow limiting range, a preset number of links closest to the topology service balancing scene are selected as a resource allocation alternative link set L.
3. The method of claim 2, wherein the method comprises: the model of the balanced distribution of the service on the link is as follows:
s.t.ΔPl＝Pnew+Pl-Pavg
pnew is newly added load traffic, Pl is original traffic of a certain link l between nodes i and j, Pavg is traffic distributed to each link in an ideal state by the whole system according to an equal distribution principle after Pnew is added, and PlmaxAnd E is a total link set, and delta Pl is the newly added load traffic plus the difference between the original traffic on the link l and the ideal traffic according to the equipartition principle, so that the link l corresponding to the minimum delta Pl is the optimal link distribution result of the service.
4. The method of claim 2, wherein the method comprises: the selection steps of the alternative link set L are as follows:
step 2.1, solving an optimal link l in all links;
step 2.2, optimally solving all the remaining links except l in the total link set E until k links are selected;
step 2.3, forming an alternative link set L ═ { L | L ═ L1,l2,…lk}。
5. The method for optimal configuration of optical transmission network resources according to claim 1, wherein: in step 3, the alternative link set L is ordered according to the number of times as follows: link lb1-lbkWith the addition of an equalization coefficient of
Wherein n is the rank number, and n is more than or equal to 1 and less than or equal to k.
6. The method for optimal configuration of optical transmission network resources according to claim 1, wherein: in step 4, the costs of the links in the alternative link set L are respectively calculated and sorted as follows: lc1-lckThe additional link cost factor is
Wherein n is the rank number, and n is more than or equal to 1 and less than or equal to k.
7. The method for optimal configuration of optical transmission network resources according to claim 1, wherein: and (4) adding the service balance coefficients and the link cost coefficients of the same link in the steps (3) and (4) and sequencing, selecting the link with the highest addition coefficient, and distributing the new service to the link to realize the optimal configuration of the optical transmission network resources.
8. An optical transmission network resource optimal configuration system is characterized in that: comprises that
The system model building module is used for building a system model for the optical transmission network;
the alternative link set determining module is used for selecting a preset link as an alternative link set L of the resource based on a service balancing principle;
a service equalization coefficient determining module, configured to add a service equalization coefficient to the alternative link set L;
a link cost coefficient determination module, configured to add a link cost coefficient to the alternative link set L based on the link cost;
and the dynamic configuration module is used for dynamically configuring the load path based on the service balance coefficient and the link cost coefficient to realize the optimal configuration of the optical transmission network resources.
9. The system for optimal configuration of optical transmission network resources according to claim 8, wherein: the alternative link set determining module is specifically configured to select, based on a service balancing principle, a preset number of links closest to a topology service balancing scenario within a link flow limiting range as an alternative link set L for resource configuration;
the model of the balanced distribution of the service on the link is as follows:
s.t.ΔPl＝Pnew+Pl-Pavg
pnew is newly added load traffic, Pl is original traffic of a certain link l between nodes i and j, Pavg is traffic distributed to each link in an ideal state by the whole system according to an equal distribution principle after Pnew is added, and PlmaxFor link l maximum allowed traffic limit, E is the total link set, Δ Pl is the newly added load traffic plusIf the difference between the original traffic on the uplink l and the ideal traffic according to the equipartition principle is found, the l link corresponding to the minimum delta Pl is the optimal link distribution result of the service;
the selection steps of the alternative link set L are as follows:
step 2.1, solving an optimal link l in all links;
step 2.2, optimally solving all the remaining links except l in the total link set E until k links are selected;
step 2.3, forming an alternative link set L ═ { L | L ═ L1,l2,…lk}；
The alternative link set L is ordered according to times as follows: link lb1-lbkWith the addition of an equalization coefficient of
Respectively calculating the cost of the links in the alternative link set L, and sequencing the links, wherein the sequencing comprises the following steps: lc1-lckThe additional link cost factor is
Wherein n is a ranking number, and n is more than or equal to 1 and less than or equal to k;
adding the service balance coefficients and the link cost coefficients of the same link and sequencing, selecting the link with the highest addition coefficient, and distributing the new service to the link to realize the optimal configuration of the optical transmission network resources.
10. A computer storage medium, characterized in that the computer storage medium stores a program for optical transmission network resource optimal configuration, which when executed by at least one processor implements the steps of the method for optical transmission network resource optimal configuration according to any one of claims 1 to 7.
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