CN111385196A - Communication network route optimization and adjustment method for real-time channel fault - Google Patents

Communication network route optimization and adjustment method for real-time channel fault Download PDF

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CN111385196A
CN111385196A CN202010482983.2A CN202010482983A CN111385196A CN 111385196 A CN111385196 A CN 111385196A CN 202010482983 A CN202010482983 A CN 202010482983A CN 111385196 A CN111385196 A CN 111385196A
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communication
adjustment
communication network
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route
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曹小冬
钟少恒
郭泽豪
陈捷
林承勋
蔡耀广
伦杰勇
陈志刚
吕华良
刘智聪
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Foshan Power Supply Bureau of Guangdong Power Grid Corp
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Foshan Power Supply Bureau of Guangdong Power Grid Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery

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Abstract

The invention relates to a communication network route optimization and adjustment method facing real-time channel faults, which comprises the following steps: s1: constructing an optimization objective with an adjustment workload minimization; s2: establishing an adjustment constraint set; s3: constructing a routing optimization adjustment model and simplifying the model; s4: and solving the model to obtain a route optimization adjustment result. The method of the invention fully considers the requirement of fast recovery of communication service under real-time channel failure, provides a route adjusting method aiming at minimizing the adjustment service volume, and can provide an adjusting scheme meeting the operation requirement of a communication network. The method has simple flow and easy realization, and has obvious effect on improving the real-time fault processing efficiency of the communication network.

Description

Communication network route optimization and adjustment method for real-time channel fault
Technical Field
The invention relates to the field of communication network safety, in particular to a communication network route optimization and adjustment method for real-time channel faults.
Background
The power communication network is an important foundation for supporting the reliable operation of modern power systems. As shown in fig. 1, the power communication network is a mesh structure formed by routing and communication channels. The route is a transmission node of the power communication network and is used for initiating and receiving transmission signals of various communication services. The communication channel is a link of the routing node and transmits a communication service transmission signal initiated by the route. Communication traffic is initiated on a fixed route and transmitted to a relatively fixed power communication item on another route. The transmission mode of the communication service can be changed by adjusting the route operation mode in the power communication network.
In the power communication network, the communication channel is generally located outdoors, the operation environment is poor, and the device is easily interrupted and fails due to factors such as external force damage. Therefore, how to make the communication service recovery under the real-time channel failure is a key problem that must be solved by the power communication network. In the traditional mode, the real-time channel fault mainly considers the load rate factor of the communication equipment so as to distribute the route and the communication service carried on the communication channel as balanced as possible. The reason is that under long-term high-load operation, the routing fault probability is improved, meanwhile, communication equipment with a high load rate breaks down, larger fault influence is caused, and the operation safety of the power communication network can be improved by the operation mode with more balanced load.
After a real-time channel failure occurs, if the route operation mode is adjusted by taking load rate balance as a target, an interrupted communication service is recovered, which may cause the problems of increased workload of route adjustment and untimely recovery of the communication service.
Disclosure of Invention
The invention provides a communication network route optimization and adjustment method facing to real-time channel faults, aiming at overcoming the defect of large workload of communication route adjustment in the prior art.
The method comprises the following steps:
s1: constructing an optimization objective with an adjustment workload minimization;
s2: establishing an adjustment constraint set;
s3: constructing a routing optimization adjustment model;
s4: and solving the model to obtain a route optimization adjustment result.
Preferably, the workload indicator in S1 refers to resuming interrupted communication traffic.
Preferably, S1 includes the steps of:
s1.1: determining the operation mode of any communication service in the power communication network,
s1.2: expressing the adjustment workload before and after the real-time communication fault routing adjustment as the numerical value of the difference of the operation mode vectors;
s1.3: and (4) in consideration of different communication service importance differences, an optimization target introduces an importance factor, and the adjustment workload of the whole power communication network is determined.
Preferably, the operation mode of any communication service in the power communication network is represented by a route carrying transmission thereof as follows:
Figure 104923DEST_PATH_IMAGE001
in the formula (I), the compound is shown in the specification,
Figure 664080DEST_PATH_IMAGE002
as a mode vector of the communication service, is
Figure 376821DEST_PATH_IMAGE003
A row vector;
Figure 566494DEST_PATH_IMAGE004
the number of routes in the power communication network.
Preferably, the adjustment workload before and after the real-time communication failure route adjustment is expressed as:
Figure 263054DEST_PATH_IMAGE005
in the formula (2), the reaction mixture is,
Figure 111056DEST_PATH_IMAGE006
adjusting workload for communication traffic;
Figure 881566DEST_PATH_IMAGE007
respectively adjusting the running mode vectors of the communication service before and after adjustment;
Figure 304457DEST_PATH_IMAGE008
expressing the numerical value of the vector, namely solving the sum of absolute values of all elements;
Figure 222734DEST_PATH_IMAGE009
are respectively vector
Figure 61377DEST_PATH_IMAGE010
To middle
Figure 14290DEST_PATH_IMAGE011
The value of each element.
Preferably, the expression of the power communication network adjustment workload is as follows:
Figure 591771DEST_PATH_IMAGE012
in the formula (I), the compound is shown in the specification,
Figure 935027DEST_PATH_IMAGE013
the workload is adjusted for the entire power communication network,
Figure 639678DEST_PATH_IMAGE014
the value of the importance coefficient of the communication service is satisfied
Figure 447097DEST_PATH_IMAGE015
And the higher the importance, the larger the value, otherwise the smaller;
Figure 149474DEST_PATH_IMAGE016
the number of communication services in the power communication network.
Preferably, the constraint conditions to be considered for adjusting the constraint set include: the load-bearing capacity of the route is restrained, the load-bearing capacity of the communication channel is restrained, and the chain structure of the communication service is restrained.
Preferably, the route bearer capability constraint is expressed as:
Figure 776764DEST_PATH_IMAGE017
in the formula (I), the compound is shown in the specification,
Figure 770259DEST_PATH_IMAGE018
representing all routing
Figure 635447DEST_PATH_IMAGE011
The sum of the communication traffic carried over,
Figure 571042DEST_PATH_IMAGE019
the maximum load capacity for the route.
Preferably, the communication channel bearer capability constraint is expressed as:
Figure 685628DEST_PATH_IMAGE020
in the formula (I), the compound is shown in the specification,
Figure 669765DEST_PATH_IMAGE021
is composed of
Figure 186197DEST_PATH_IMAGE022
The transpose of (a) is performed,
Figure 541961DEST_PATH_IMAGE023
is a vector of the connection relation of the communication channels,
Figure 347106DEST_PATH_IMAGE024
the maximum load capacity of the communication channel; the connection relationship vector for a communication channel may be represented as:
Figure 197250DEST_PATH_IMAGE025
wherein the connection relation vector of the communication channel is
Figure 568189DEST_PATH_IMAGE026
And column vectors, wherein each element corresponds to a correspondingly ordered route, the values of the elements at the corresponding positions of the routes at the two sides of the communication channel are 1, and the values of other positions are 0.
Preferably, the traffic chain structure constraint is expressed as:
Figure 783269DEST_PATH_IMAGE027
in the formula (I), the compound is shown in the specification,
Figure 606869DEST_PATH_IMAGE028
for communication channels
Figure 11436DEST_PATH_IMAGE029
And communication service
Figure 440144DEST_PATH_IMAGE030
Bearing relation state variable when communication channel bears communication service
Figure 888443DEST_PATH_IMAGE030
If so, the value is 1, otherwise, the value is 0;
Figure 668180DEST_PATH_IMAGE031
a connection relation vector for a communication service, expressed as:
Figure 594548DEST_PATH_IMAGE032
in the formula, each element of the communication service connection relation vector corresponds to a route, the element values of the corresponding positions of the communication service access end route and the access end route are 1, and the other values are 0.
Preferably, the route optimization adjustment model is as follows:
Figure 940078DEST_PATH_IMAGE033
in the formula, FS is a communication service set affected by a communication channel failure.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that: the method of the invention fully considers the requirement of fast recovery of communication service under real-time channel failure, provides a route adjusting method aiming at minimizing the adjustment service volume, and can provide an adjusting scheme meeting the operation requirement of a communication network. The method has simple flow and easy realization, and has obvious effect on improving the real-time fault processing efficiency of the communication network.
Drawings
Fig. 1 is a schematic diagram of a power communication network.
Fig. 2 is a flowchart of a communication network route optimization and adjustment method for real-time channel failure according to this embodiment.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;
it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Example 1
The embodiment provides a communication network route optimization and adjustment method for real-time channel failure, as shown in fig. 2. The method comprises the following steps:
s1: the optimization objective is constructed with an adjustment workload minimization.
The adjustment workload index provided in this embodiment refers to the number of routes that the operation staff needs to make operation mode adjustment in order to recover the interrupted communication service. The operation mode of any communication service in the power communication network can be represented by a route carrying transmission of the communication service as follows:
Figure 762541DEST_PATH_IMAGE001
（1）
in the formula (1), the reaction mixture is,
Figure 810000DEST_PATH_IMAGE002
for communication service
Figure 540059DEST_PATH_IMAGE030
Is a running mode vector of
Figure 943358DEST_PATH_IMAGE003
A row vector.
Figure 733460DEST_PATH_IMAGE004
The number of routes in the power communication network. Each element in the vector corresponds to the bearer relationship between the traffic and the corresponding route, if not
Figure 18947DEST_PATH_IMAGE011
If each route carries the communication service, then
Figure 755959DEST_PATH_IMAGE011
The value of each element is 1; otherwise, the value is 0. OM is the first letter combination of Operation Mode, cs is the first letter combination of Communication Service, NR is the first letter combination of Number of routes, and T is the vector transpose operator.
To the communication service
Figure 826815DEST_PATH_IMAGE030
The adjustment workload before and after the real-time communication failure route adjustment can be expressed asThe value of the difference between the operation mode vectors can be expressed as:
Figure 725500DEST_PATH_IMAGE005
（2）
in the formula (2), the reaction mixture is,
Figure 498284DEST_PATH_IMAGE006
for communication service
Figure 835725DEST_PATH_IMAGE030
The adjustment workload of (2).
Figure 744775DEST_PATH_IMAGE007
Respectively, the running mode vectors of the communication service before and after adjustment.
Figure 79941DEST_PATH_IMAGE008
The expression takes the value of the vector, namely the sum of the absolute values of all elements is solved.
Figure 589289DEST_PATH_IMAGE009
Are respectively vector
Figure 668103DEST_PATH_IMAGE010
To middle
Figure 697239DEST_PATH_IMAGE011
The value of each element. Wherein, AW is the first letter combination of the adjusting Workload english Adjust workbench, Num is the first three letters of the numerical english Number, and B, A are the first letters of "front" english Before and "back" english After, respectively.
The adjustment workload of the whole power communication network is the sum of the adjustment workloads of all communication services, and after importance factors are introduced into an optimization target in consideration of different importance differences of the communication services, the adjustment workload of the whole power communication network can be expressed as follows:
Figure 45DEST_PATH_IMAGE012
（3）
in the formula (3), the reaction mixture is,
Figure 950683DEST_PATH_IMAGE013
the workload is adjusted for the entire power communication network,
Figure 364347DEST_PATH_IMAGE014
for communication service
Figure 264301DEST_PATH_IMAGE030
The value of the importance coefficient satisfies
Figure 675691DEST_PATH_IMAGE015
And the higher the importance, the larger the value, otherwise the smaller.
Figure 910363DEST_PATH_IMAGE016
The number of communication services in the power communication network. Wherein
Figure 127718DEST_PATH_IMAGE016
The first letter combination of English Number of Communication Service is known for the Communication Service.
S2: and establishing an adjustment constraint set.
The constraint conditions to be considered comprise three items, namely a route bearing capacity constraint, a communication channel bearing capacity constraint and a communication service chain structure constraint.
1. Routing bearer capacity constraints:
the constraint of the route carrying capacity means that the number of communication services carried by any route cannot exceed the carrying capacity thereof, and can be expressed as:
Figure 69129DEST_PATH_IMAGE017
（4）
in the formula (4), the reaction mixture is,
Figure 979316DEST_PATH_IMAGE018
representing all routingrThe sum of the communication traffic carried over,
Figure 638968DEST_PATH_IMAGE019
the maximum load capacity for the route. Wherein MLC is the combination of Maximum Load Capacity of routing English Maximum Load Capacity of Route.
2. Communication channel bearer capacity constraints:
the communication channel bearing capacity constraint means that the communication service carried by any communication channel cannot exceed the bearing capacity of the communication channel, and can be expressed as:
Figure 643702DEST_PATH_IMAGE020
（5）
in the formula (5), the reaction mixture is,
Figure 767515DEST_PATH_IMAGE023
for communication channels
Figure 786287DEST_PATH_IMAGE029
The vector of the connection relationship of (a),
Figure 464393DEST_PATH_IMAGE024
is the maximum load of the communication channel. The connection relationship vector for a communication channel may be represented as:
Figure 289129DEST_PATH_IMAGE025
（6）
in the formula (6), the connection relation vector of the communication channel is
Figure 205133DEST_PATH_IMAGE026
And column vectors, wherein each element corresponds to a correspondingly ordered route, the values of the elements at the corresponding positions of the routes at the two sides of the communication channel are 1, and the values of other positions are 0. Wherein, CC is the first letter combination of Communication Channel, and CR is the first letter combination of connection relation.
3. The chain structure of the communication service is restricted:
the communication service chain structure refers to a unidirectional chain link formed by connecting the head and the tail of a communication channel for bearing the communication service. When the communication service operation mode vector is adopted, the chain structure constraint is equivalent to link communication and can be expressed as:
Figure 207855DEST_PATH_IMAGE027
（7）
in the formula (7), the reaction mixture is,
Figure 638836DEST_PATH_IMAGE028
for communication channels
Figure 939368DEST_PATH_IMAGE029
And communication service
Figure 772195DEST_PATH_IMAGE030
Carrying a state variable of a relationship as a communication channel
Figure 929506DEST_PATH_IMAGE029
Carries communication service
Figure 785467DEST_PATH_IMAGE030
If so, the value is 1, otherwise, the value is 0.
Figure 201274DEST_PATH_IMAGE031
For communication service
Figure 91869DEST_PATH_IMAGE030
The connection relation vector of (2) can be expressed as:
Figure 420082DEST_PATH_IMAGE032
（8）
in the formula (8), each element of the communication service connection relation vector corresponds to a route, the element values of the corresponding positions of the communication service access end route and the access end route are 1, and the other values are 0.
S3: and constructing a route optimization and adjustment model.
For the routing adjustment optimization required to be carried out for communication service recovery under real-time communication channel failure, only the affected communication service needs to be considered, so the routing optimization adjustment model can be expressed as follows:
Figure 825656DEST_PATH_IMAGE033
（9）
in equation (9), FS is a set of communication services affected by a communication channel failure. The optimization target is the minimum adjustment workload of the influenced communication service, and the considered optimization target comprises the constraint of the bearing capacity of the route, the constraint of the bearing capacity of the communication channel and the constraint of the chain structure of the communication service.
S4: and solving the model to obtain a route optimization adjustment result.
The optimization model is a linear programming problem containing an absolute value item, the absolute value item is removed by introducing a state variable, and the optimization model is solved by adopting conventional programming methods such as simplex and the like. The implementation process is not repeated in the invention. The solution result is the real-time channel fault route adjustment scheme with the minimum adjustment workload.
The terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent;
it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A communication network route optimization and adjustment method for real-time channel faults is characterized by comprising the following steps:
s1: constructing an optimization objective with an adjustment workload minimization;
s2: establishing an adjustment constraint set;
s3: constructing a routing optimization adjustment model;
s4: and solving the model to obtain a route optimization adjustment result.
2. The method for optimizing and adjusting routing of communication network facing real-time channel failure according to claim 1, wherein S1 comprises the following steps:
s1.1: determining the operation mode of any communication service in the power communication network,
s1.2: expressing the adjustment workload before and after the real-time communication fault routing adjustment as the numerical value of the difference of the operation mode vectors;
s1.3: and (4) in consideration of different communication service importance differences, an optimization target introduces an importance factor, and the adjustment workload of the whole power communication network is determined.
3. The method for optimizing and adjusting the routing of the communication network facing the real-time channel fault according to claim 2, wherein the operation mode of any communication service in the power communication network is represented by a route carrying the transmission of the communication service as follows:
Figure 246887DEST_PATH_IMAGE001
in the formula (I), the compound is shown in the specification,
Figure 101711DEST_PATH_IMAGE002
as a mode vector of the communication service, is
Figure 147027DEST_PATH_IMAGE003
A row vector;
Figure 11078DEST_PATH_IMAGE004
the number of routes in the power communication network.
4. The method for optimizing and adjusting the routing of a communication network facing the real-time channel fault according to claim 3, wherein the adjustment workload before and after the real-time communication fault routing adjustment is expressed as:
Figure 559871DEST_PATH_IMAGE005
in the formula (2), the reaction mixture is,
Figure 100443DEST_PATH_IMAGE006
adjusting workload for communication traffic;
Figure 367476DEST_PATH_IMAGE007
respectively adjusting the running mode vectors of the communication service before and after adjustment;
Figure 35218DEST_PATH_IMAGE008
expressing the numerical value of the vector, namely solving the sum of absolute values of all elements;
Figure 438517DEST_PATH_IMAGE009
are respectively vector
Figure 900723DEST_PATH_IMAGE010
To middle
Figure 655052DEST_PATH_IMAGE011
The value of each element.
5. The real-time channel fault-oriented communication network route optimization and adjustment method according to claim 4, wherein the expression of the power communication network adjustment workload is as follows:
Figure 110173DEST_PATH_IMAGE012
in the formula (I), the compound is shown in the specification,
Figure 633558DEST_PATH_IMAGE013
the workload is adjusted for the entire power communication network,
Figure 266665DEST_PATH_IMAGE014
for importance of communication servicesCoefficient, value satisfies
Figure 242711DEST_PATH_IMAGE015
And the higher the importance, the larger the value, otherwise the smaller;
Figure 252255DEST_PATH_IMAGE016
the number of communication services in the power communication network.
6. The method for optimizing and adjusting the routing of a communication network facing the real-time channel failure according to any one of claims 1 to 5, wherein the constraint conditions to be considered for adjusting the constraint set include: the load-bearing capacity of the route is restrained, the load-bearing capacity of the communication channel is restrained, and the chain structure of the communication service is restrained.
7. The method for optimizing and adjusting routing of communication network for real-time path failure according to claim 6, wherein the routing bearer capability constraint is expressed as:
Figure 895726DEST_PATH_IMAGE017
in the formula (I), the compound is shown in the specification,
Figure 683423DEST_PATH_IMAGE018
representing all routingrThe sum of the communication traffic carried over,
Figure 412344DEST_PATH_IMAGE019
the maximum load capacity for the route.
8. The method for optimizing and adjusting the routing of a communication network for real-time channel failure according to claim 7, wherein the communication channel bearer capacity constraint is expressed as:
Figure 694421DEST_PATH_IMAGE020
in the formula (I), the compound is shown in the specification,
Figure 192398DEST_PATH_IMAGE021
is composed of
Figure 167308DEST_PATH_IMAGE022
The transpose of (a) is performed,
Figure 383525DEST_PATH_IMAGE023
is a vector of the connection relation of the communication channels,
Figure 718561DEST_PATH_IMAGE024
the maximum load capacity of the communication channel; the connection relationship vector for a communication channel may be represented as:
Figure 71045DEST_PATH_IMAGE025
wherein the connection relation vector of the communication channel is
Figure 482434DEST_PATH_IMAGE026
And column vectors, wherein each element corresponds to a correspondingly ordered route, the values of the elements at the corresponding positions of the routes at the two sides of the communication channel are 1, and the values of other positions are 0.
9. The method for optimizing and adjusting the routing of a communication network facing the real-time channel fault as recited in claim 8, wherein the constraint of the chain-like structure of the communication service is expressed as:
Figure 920369DEST_PATH_IMAGE027
in the formula (I), the compound is shown in the specification,
Figure 544248DEST_PATH_IMAGE028
for communication channels
Figure 16818DEST_PATH_IMAGE029
And communication service
Figure 333530DEST_PATH_IMAGE030
Bearing relation state variable when communication channel bears communication service
Figure 258761DEST_PATH_IMAGE030
If so, the value is 1, otherwise, the value is 0;
Figure 935598DEST_PATH_IMAGE031
a connection relation vector for a communication service, expressed as:
Figure 262675DEST_PATH_IMAGE032
in the formula, each element of the communication service connection relation vector corresponds to a route, the element values of the corresponding positions of the communication service access end route and the access end route are 1, and the other values are 0.
10. The real-time channel failure oriented communication network route optimization and adjustment method according to claim 9, wherein the route optimization and adjustment model is:
Figure 15867DEST_PATH_IMAGE033
in the formula, FS is a communication service set affected by a communication channel failure.
CN202010482983.2A 2020-06-01 2020-06-01 Communication network route optimization and adjustment method for real-time channel fault Pending CN111385196A (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109195192A (en) * 2018-08-16 2019-01-11 全球能源互联网研究院有限公司 Balancing energy dispatching method, device, system and the storage medium of wireless sense network

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109195192A (en) * 2018-08-16 2019-01-11 全球能源互联网研究院有限公司 Balancing energy dispatching method, device, system and the storage medium of wireless sense network

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
王翊 等，: ""面向实时通道故障的电力通信网路由优化调整方法"", 《机械与电子》 *

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