CN107689918B - Automatic searching method for service channel path of power communication network - Google Patents
Automatic searching method for service channel path of power communication network Download PDFInfo
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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
- H04L45/22—Alternate routing
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- H—ELECTRICITY
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- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
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Abstract
The invention discloses an automatic searching method of a service channel path of an electric power communication network, which integrates basic parameters of service specifications of the electric power communication network, working habits specialized in modes of the electric power communication network and the like into path searching, when the type of the channel routing is optical fiber multiplexing, the reachable path searching of a channel layer and a link layer is sequentially carried out, and when the type of the channel routing is special for optical fibers, the reachable path searching of an optical cable layer is carried out, so that a complete path routing scheme can be provided; through weighting calculation, the selected paths are all available, and the situation that the calculated path part cannot be used is avoided; meanwhile, the principle of the power communication network N-1 is added in the standby path search, so that a solid support is provided for the stable operation of the communication service of the power communication network, and the method has a good application prospect.
Description
Technical Field
The invention relates to an automatic searching method for a service channel path of a power communication network, belonging to the technical field of automatic searching of the power communication network path.
Background
An algorithm for automatic transmission path search has been studied for a long time in the communication industry, and many equipment manufacturers in China provide an automatic path search function in an EMS system. The automatic path searching function provided by the EMS system can be divided into two types, one type is automatic channel series connection, the function is mainly applied to channel series connection of SDH, and the function is connected in series from source to destination according to the topological connection relation between the network element internal intersection and the network element; the other type is channel reachable path searching, the function is based on the topological connection relation between network elements, does not require available intersection in the network elements, and searches for a topological connection reachable path from a target starting point to a target end point. The above two automatic path search algorithms are widely researched and applied in the communication field, and the network manager manufacturer adds some functions of human intervention on the basis of the above two automatic path search algorithms, for example, the user manually determines to select a channel or a link; after the system is automatically searched, the nodes are arranged according to the number of the nodes for the user to manually select, and the user needs to refer to other information to select a determined path and the like.
In general, the traditional single-mode path search function cannot meet the design requirements of the power communication network scheme, and mainly includes the following points:
1. the path search algorithm of the channel layer and the link layer is not fused, and a complete path routing scheme cannot be provided;
2. the factors such as fiber core length, attenuation, reserved spare fiber cores and the like are not considered in the optical cable layer path search, and the path part obtained by automatic calculation of the system cannot be used.
Disclosure of Invention
In order to solve the technical problem, the invention provides an automatic searching method for a service channel path of a power communication network.
In order to achieve the purpose, the invention adopts the technical scheme that:
an automatic searching method for a service channel path of a power communication network comprises a main path search, and comprises the following specific steps:
reading basic parameters of a main path scheme;
determining the channel routing type according to the planning of a communication department on a main path scheme, sequentially searching reachable paths of a channel layer and a link layer if optical fiber multiplexing is adopted, and searching reachable paths of an optical cable layer if the optical fiber multiplexing is special;
and performing weighted calculation on the reachable paths obtained by analysis, sorting the reachable paths according to the weight calculation result sequence after calculation, and preferentially selecting the reachable paths according to the sorting result sequence.
The method also comprises the following steps of searching for a standby path:
reading basic parameters of a standby path scheme, wherein the basic parameters of the standby path scheme comprise basic parameters of a main path scheme and requirements of an N-1 principle of a power communication network;
determining the channel routing type according to the planning of a communication department on a standby path scheme, sequentially searching a channel layer reachable path and a link layer reachable path if the standby path scheme is optical fiber multiplexing, and searching an optical cable layer reachable path if the standby path scheme is optical fiber special;
and performing weighted calculation on the reachable paths obtained by analysis, sequencing the reachable paths according to the weight calculation result sequence after calculation, and preferentially selecting the reachable paths according to the sequencing result sequence.
The basic parameters of the main path scheme comprise the service requirements of a service department on the main path scheme, the planning target of a communication department on the main path scheme and the requirements of the power communication network service specification on the main path scheme.
When the reachable path is searched, the network element is preferentially searched for the configured cross connection, and then the topological connection is searched.
The weight parameters of the channel layer and the link layer comprise the number of reachable path nodes, the fault rate of the communication equipment, the bandwidth occupancy rate and the occupation ratio of different types of services; the optical cable layer weight parameters comprise the number of optical cable sections, the total length of the optical cable, the attenuation coefficient of the optical cable and the proportion of the used optical cable.
The main path search is performed first, and then the standby path search is performed.
The invention achieves the following beneficial effects: the invention integrates basic parameters of the electric power communication network service specification, the working habit of the electric power communication network mode responsibility and the like into path search, when the channel routing type is optical fiber multiplexing, the reachable path search of a channel layer and a link layer is carried out in sequence, and when the channel routing type is special for optical fibers, the reachable path search of an optical cable layer is carried out, so that a complete path routing scheme can be provided; through weighting calculation, the selected paths are all available, and the situation that the calculated path part cannot be used is avoided; meanwhile, the principle of the power communication network N-1 is added in the standby path search, so that a solid support is provided for the stable operation of the communication service of the power communication network, and the method has a good application prospect.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, an automatic search method for a service channel path of a power communication network first performs a primary path search and then performs a backup path search.
The method comprises the following specific steps:
1) and reading basic parameters of the main path scheme.
The basic parameters of the scheme are the basis for preparing the scheme, and the basic parameters of the scheme are objectified, and specifically comprise the service requirements of a service department on the main path scheme, the planning target of the communication department on the main path scheme and the requirements of the power communication network service specification on the main path scheme.
The service department has service requirements on the main path scheme: including the start and stop point of the service, the bandwidth, the interface type of the service equipment, the service type carried by the optical fiber, the service time limit, etc.
The communication department plans the goal of the main path scheme: and after receiving the service requirement, the communication department judges the rationality of the service and plans a communication scheme according to the service requirement, wherein the planning content comprises a channel route type, an optical fiber construction and maintenance unit, an optical fiber speed, a service duration and the like.
When planning to use the optical port of the equipment and the fiber core of the optical cable, the communication department reserves certain resources for fault emergency repair, temporary opening and the like. The communication resources are reserved in proportion and cannot be clearly marked in the resource information. When the daily scheme is compiled, the reserved resources are required to be free and not occupied. The reserved resource requirement is important parameter information for communication department scheme compilation.
The requirements of the power communication network service specification on the main path scheme are as follows: the scheme compiled by the communication department needs to meet the service specification of the power communication network, and the requirements of the service specification on the scheme comprise a service type, an optical fiber type and the like.
2) And determining the channel routing type according to the planning of the main path scheme by the communication department, sequentially searching the reachable paths of the channel layer and the link layer if the optical fiber multiplexing is adopted, and searching the reachable paths of the optical cable layer if the optical fiber multiplexing is adopted.
The channel layer and link layer search comprises a starting point to end point direct channel, a starting point to end point direct high-speed channel and a starting point to end point partial channel; when the reachable path is searched, the network element is preferentially searched for the configured cross connection, then the topological connection is searched, and the sequence of the search result is sequenced according to the number of the topological connection.
The reachable path search is based on basic parameters and adopts a developed binary tree algorithm to search the reachable path.
3) And performing weighted calculation on the reachable paths obtained by analysis, excluding the fibers which are not really available in the reachable paths, sequencing the reachable paths according to the weight calculation result sequence after calculation, and preferentially selecting the reachable paths according to the sequencing result sequence.
The weight parameters of the channel layer and the link layer comprise the number of reachable path nodes, the fault rate of communication equipment, the bandwidth occupancy rate, the occupation ratio of different types of services and the like; the optical cable layer weight parameters comprise the number of optical cable sections, the total length of the optical cable, the attenuation coefficient of the optical cable and the proportion of the used optical cable.
4) And reading the basic parameters of the standby path scheme, wherein the basic parameters of the standby path scheme comprise the basic parameters of the main path scheme and the requirements of the N-1 principle of the power communication network.
The principle of the power communication network N-1 is that, in a normal operation mode, a single equipment fault at any site in the communication system or a single-point facility fault on a line cannot cause all interruption of a certain power production service at any site in the system. Important services of the power communication network need to meet the N-1 principle, and the important services comprise relay protection, safety automatic devices and the like.
Important service channel requirements: important services meet the principle of an electric power communication network N-1, a main path and a standby path need to be configured firstly, when a single path fails, the other path can bear the services, and the main path and the standby path adopt a 1+1 protection mode.
The requirement of the N-1 principle on the main and standby paths passing through the station is as follows: when a station dynamic environment system breaks down, equipment in the station and the optical cable passing through the station can be affected. Therefore, when a site fails, if the stop-passing service is not interrupted, it is necessary to ensure that the main and standby service paths do not pass through the same site. When the scheme path is automatically searched, the main and standby paths need to be distinguished, and nodes passed by the main and standby paths are allocated to different sites.
The requirement of the N-1 principle on the main and standby path bearing equipment is as follows: when a device fails, traffic passing through the device may be affected. In order to ensure that the service is not interrupted when the equipment passed by the path fails, the main and standby paths to which the service is configured do not pass through the same equipment. When the scheme path is automatically searched, the main and standby paths need to be distinguished, and mutual exclusion of the devices passing through the main and standby paths is achieved.
The requirement of the N-1 principle on the main and standby paths through the optical cable is as follows: in the event of a cable failure, traffic passing through the core of the cable may be affected. In order to ensure that the service is not interrupted when the optical cable passed by the path fails, the main and standby paths of the service need to be set not to pass through the same optical cable. When the scheme path is automatically searched, the main standby path needs to be distinguished, and when the optical cable layer path is searched, the main standby path cannot be physically the same cable.
5) Determining the channel routing type according to the planning of a communication department on a standby path scheme, sequentially searching a channel layer reachable path and a link layer reachable path if the standby path scheme is optical fiber multiplexing, and searching an optical cable layer reachable path if the standby path scheme is optical fiber special;
6) and performing weighted calculation on the reachable paths obtained by analysis, excluding the fibers which are not really available in the reachable paths, sequencing the reachable paths according to the weight calculation result sequence after calculation, and preferentially selecting the reachable paths according to the sequencing result sequence.
The method integrates basic parameters such as the service specification of the electric power communication network, the working habit specialized by the mode of the electric power communication network and the like into path search, when the channel routing type is optical fiber multiplexing, the reachable path search of a channel layer and a link layer is sequentially carried out, and when the channel routing type is special for optical fibers, the reachable path search of an optical cable layer is carried out, so that a complete path routing scheme can be provided; through weighting calculation, the selected paths are all available, and the situation that the calculated path part cannot be used is avoided; meanwhile, the principle of the power communication network N-1 is added in the standby path search, so that a solid support is provided for the stable operation of the communication service of the power communication network, and the method has a good application prospect.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (3)
1. An automatic search method for a service channel path of a power communication network is characterized in that: the method comprises the following steps of searching a main path:
reading basic parameters of a main path scheme;
determining the channel routing type according to the planning of a communication department on a main path scheme, sequentially searching reachable paths of a channel layer and a link layer if optical fiber multiplexing is adopted, and searching reachable paths of an optical cable layer if the optical fiber multiplexing is special;
performing weighted calculation on the reachable paths obtained by analysis, excluding real unusable optical fibers in the reachable paths, sorting the reachable paths according to the weight calculation result sequence after calculation, and preferentially selecting the reachable paths according to the sorting result sequence;
the method also comprises the following steps of searching for a standby path:
reading basic parameters of a standby path scheme, wherein the basic parameters of the standby path scheme comprise basic parameters of a main path scheme and requirements of an N-1 principle of a power communication network;
determining the channel routing type according to the planning of a communication department on a standby path scheme, sequentially searching a channel layer reachable path and a link layer reachable path if the standby path scheme is optical fiber multiplexing, and searching an optical cable layer reachable path if the standby path scheme is optical fiber special;
performing weighted calculation on the reachable paths obtained by analysis, excluding real unusable optical fibers in the reachable paths, sorting according to the weight calculation result sequence after calculation, and preferentially selecting the reachable paths according to the sorting result sequence;
the basic parameters of the main path scheme comprise the service requirements of a service department on the main path scheme, the planning target of a communication department on the main path scheme and the requirements of the power communication network service specification on the main path scheme;
the weight parameters of the channel layer and the link layer comprise the number of reachable path nodes, the fault rate of the communication equipment, the bandwidth occupancy rate and the occupation ratio of different types of services; the optical cable layer weight parameters comprise the number of optical cable sections, the total length of the optical cable, the attenuation coefficient of the optical cable and the proportion of the used optical cable.
2. The automatic searching method for the service channel path of the power communication network according to claim 1, characterized in that: when the reachable path is searched, the network element is preferentially searched for the configured cross connection, and then the topological connection is searched.
3. The automatic searching method for the service channel path of the power communication network according to claim 1, characterized in that: the main path search is performed first, and then the standby path search is performed.
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| CN110309943A (en) * | 2019-04-15 | 2019-10-08 | 国网山东省电力公司信息通信公司 | Optimal service path planning method for power transmission network |
| CN110808883B (en) * | 2019-11-07 | 2020-12-11 | 中国电子科技集团公司第三十四研究所 | Searching method of optical fiber communication transmission path |
| CN110784218B (en) * | 2019-11-11 | 2023-03-21 | 电信科学技术第五研究所有限公司 | Method for rapidly identifying rubidium clock type |
| CN111611666B (en) * | 2020-06-04 | 2023-03-17 | 中通服创立信息科技有限责任公司 | Communication intelligent scheme design system and method based on power business rules |
| CN115118649B (en) * | 2022-06-29 | 2023-07-11 | 国网山东省电力公司威海供电公司 | Automatic planning method for relay protection route of power communication network |
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