JP4062615B2 - COMMUNICATION MEDIUM SELECTING METHOD IN COMMUNICATION STATION, PROGRAM THEREOF, AND RECORDING MEDIUM - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a technology for selecting communication equipment in a communication station used for commercial purposes, and in particular, a communication medium for selecting a laid communication medium.Selection method,The present invention also relates to a processing program and a recording medium on which the processing program is recorded.
[0002]
[Prior art]
(Characteristics of communication media in communication stations)
Before describing the conventional technology, the service characteristics of the communication medium in the communication station will be described. In the case of a communication station, there are mainly three patterns as service types.
The first type of service is a service called the direct acquisition method, and a one-to-one relationship is always maintained from the start point (customer side) to the end point (on-site device side). It takes the form that there is one end point. In this case, a medium such as a core wire / terminal that is not always occupied by another subscriber is selected as the communication medium in the communication station.
[0003]
The second is a service method called a multi-branch method, in which an n-to-1 relationship is established from the start point (customer side) to the end point (inside device side). This is a format in which a single fiber is shared by a plurality of subscribers to an intermediate branch device (hereinafter referred to as a branch device) for an optical signal emitted from the device side which is the end point. The service is provided by a plurality of core wires / terminals after the branch device. As a characteristic of this service, in the case of selecting the first subscriber, as with the direct service, the communication medium in the communication station is always a medium such as an empty core / terminal that is not occupied by other subscribers. It is said. However, in the case of selection with the same service of the second subscriber, all the core wires / terminals from the device to the branch device are occupied (connected), and there is an empty terminal on the output side in the branch device. Opening is possible.
[0004]
The third is a service called wavelength division multiplexing, and an m-to-n relationship is established from the start point (customer side) to the end point (inside device side). There are multiple devices that are the end points, each generating independent signals, inserting the optical signal into a wavelength multiplexing branching device in the middle, wavelength multiplexing the multiple optical signals, and then, as with the multi-branch service The signal is branched and shared by a plurality of subscribers. This is a format in which optical signals emitted from multiple devices at the end point are accommodated in one branch device and shared to the branch device. Services are provided by a plurality of core wires / terminals. As a characteristic of this service, after selecting the equipment for the first terminal (hereinafter referred to as wavelength 1), confirm that the selection was successful, and again select the second terminal (hereinafter referred to as wavelength 2). The selection process occurs twice because it needs to be implemented.
[0005]
In the case of selection of the first subscriber, as in the direct service, a communication medium in the communication station is always selected as a medium such as an empty core / terminal that is not occupied by other subscribers. However, in the case of selection with the same service of the second subscriber, all the core wires / terminals from the device to the branch device are occupied (connected), and there is an empty terminal on the output side in the branch device. Opening is possible. The difference from the multi-branch service is that there are multiple terminals on the device side in the case of wavelength multiplexing, so there is no equipment at the second terminal (wavelength 2) even if selection is successful at the first terminal (wavelength 1). In this case, selection cannot be performed. For this reason, after the selection of the first terminal (wavelength 1) is successful, it is necessary to select the second terminal (wavelength 2) again while retaining information on the corresponding wavelength multiplexing branch device.
[0006]
(Prior art 1)
Regarding a path search method between two points, for example, Japanese Patent Application Laid-Open No. 10-134108 (see Patent Document 1), Japanese Patent Application Laid-Open No. 9-161105 (see Patent Document 2), or Japanese Patent Application Laid-Open No. 9-257503 (Patent Document 1). There is a route search (selection) method as described in railway transfer navigation and car navigation, as described in Reference 3).
In these navigations, a route search is performed while comparing time, distance, or fare by the Dijkstra method or the like. In selecting the equipment of the communication medium group in the communication station, the path search for the point-to-point terminal is performed. As shown in FIG. 4, the communication medium group in the communication station is a cable, a rack for accommodating the cable, and an in-house device. Furthermore, since the cable is composed of a plurality of core wires, a cable rack, and a plurality of adapter terminals in the in-house device, not only the path of the point-to-point terminal but also the core wire and the adapter in the path It is necessary to select whether to use the terminal. At that time, it is necessary to determine the use status (whether connection is made) and the state (whether it is usable) of each core wire and adapter terminal. Therefore, even if it is the optimum route, the route cannot be used unless there is a cord and adapter terminal that can be used, and selection must be made in consideration of the use status and state of each communication medium constituting the route. .
[0007]
As a general example of the above-mentioned conventional technology, there is a technology for selecting the optimal route between stations from the start point to the end point as a route selection technology adopted by the passenger railway industry, and it exists between the start point and the end point. From the information of the station (node) to be used and the cost / time information between the stations (nodes), all the routes between the start point and the end point are evaluated from the time axis / cost axis, and the result is displayed to the user. There is a function to do. However, when this technology is applied to communication facilities, the target is a medium called a train. Therefore, the transmission object in one medium (train) such as a multi-branch technology (service signal, train In this case, it is not taken into account that a person) is branched (copied) into a plurality of media (trains) and transmitted. This is because when selecting from a node (outside cable rack) to a node (device), in the case of a multi-branch service that has already been opened by the subscriber, the selection of the second terminal is the first terminal. It will be selected consciously.
[0008]
In the passenger railway industry, this means that a train (communication medium) is copied (branched) to multiple trains (communication media) at a station (node), and the station (starting point) to the station. Between the routes to (end point), it is full (used) with other passengers (users) up to a certain station (branch equipment loading node), but it is copied (branched) from a certain station (node), so From the station (branch device mounting node), it is considered that the train (medium) in a certain direction becomes empty, which is not a reality. Therefore, it is not suitable for the idea unique to communication equipment, and has a different policy from that intended by the present invention, so it is clearly different from the target field.
Furthermore, in communication equipment-specific methods, a technique that aggregates multiple transmission objects (service signals in communication, people in the case of trains) into a single transmission object and multi-branches, as in wavelength multiplexing. Is not taken into account. In the passenger railway industry, this means that in addition to the multiple branches described above, multiple trains (communication media) are aggregated into one medium and branched into multiple, which may also be a reality. Absent. Therefore, in the above technique, a multi-branch service that branches a signal transmitted from one device existing as one of the communication services into a plurality of wavelengths, and a wavelength that multi-branches the signals transmitted from the plurality of devices are aggregated. Since it is not possible to select a multiplex system service and the policy is different from that intended by the present invention in communication facilities, it is clearly different from the target field.
[0009]
As another example of the above-described conventional route selection technology, there is a route selection technology adopted by the aviation industry. When selecting a route from the start point to the end point, there are a case where one airline is used directly and a case where several airlines are used to go to the destination. When traveling to multiple destinations using multiple airlines, information such as boarding time, arrival time, flight time, cost, etc. for each airline between airports (nodes) is maintained and routed through several airports (nodes). Even if you go to your destination, you can evaluate all routes from the start point to the end point connecting the airports (nodes) with the information of each company, and display the results to the user. There is a function to do. In addition, there is a route selection method in consideration of the combination information (for example, ANA Star Alliance, etc.) in the case of crossing a plurality of airlines.
However, when the above technique is applied to communication equipment, services such as multi-branching and wavelength multiplexing are not taken into consideration as described above, and it is not suitable as a path selection technique for communication equipment. In addition, when another subscriber has already used one service like the multi-branch service and there is an empty facility at the second terminal, the second subscriber receives the service using the terminal. That is the case with communication equipment. However, since the utilization state on the equipment from the apparatus to the branching medium is the equipment in use, the concept of further using the equipment in use is required when the above-described path selection technique is to be used. Even in such a facility in use, it is different from the object of the present invention in that it does not take into account whether or not it can be used.
[0010]
In the above technology, a service that exists as one of the communication services, that is, a multi-branch service that branches a signal transmitted from one device into a plurality of signals and a signal that is transmitted from a plurality of devices are aggregated. It differs from the target policy of the present invention in communication facilities in that it cannot select a wavelength division multiplexing service to be branched and there is no concept of selecting an empty facility taking into account the facility in use. Therefore, it is clearly different from the target field.
Furthermore, as a route selection technology adopted by the delivery industry due to recent technological innovations, the GPS device is attached to a transport medium such as a truck, and its location information is grasped and managed by satellite, as well as road congestion. Is obtained in real time, and there is a route selection method for selecting an optimum route from the current position and destination information of the transport medium and road information. However, when the above technology is applied to communication equipment, in addition to the characteristics such as multi-branching and wavelength multiplexing, the occupancy of the equipment is not considered. The above technologies take into account the usage status (congestion status) of the route, and give priority to selecting a route with less congestion. However, in the case of communication facilities, one subscriber has already used it like a multi-branch service. Because it is necessary to select the second subscriber taking into account the route that is being used, the technology that takes into account the usage status of the above technology takes into account the characteristics that the user gets on top of the user. However, it is not suitable as a route selection technology for communication equipment, and the policy is different from that of the above technical field, so it is clearly different from the field targeted by the present invention.
[0011]
(Prior art 2)
As a system for managing and operating passive components such as a communication medium in a communication station, for example, there is a system described in Japanese Patent Laid-Open No. 2001-142952 (Mr. Nakao) (see Patent Document 4). By following the processing procedure of the computer software described above, a series of operation methods from the design of the passive component group to the construction and removal are established. The series of operations includes automatic selection of passive components, but in the communication media group within the communication station, the route is selected simply by connecting the passive components that make up the route. Can not do it. This is because, as shown in FIG. 4, the communication medium and the number of optical branches according to the service, the communication wavelength, the test wavelength, the workability, the scheduled use date, the scheduled abolition date, etc. The path must be selected. In addition, as described above, the selection of the communication medium in the communication station must take into account the selection of the wavelength division multiplexing service and the multi-branch service. It is possible to match the connection of actual equipment and components with the database in the series of flow from design to operation, and to make automatic selection that realizes efficient equipment operation based on an accurate database. Since the policy is different from the one intended by the technical field in that it does not take into account the above characteristics, it is clearly different from the field targeted by the present invention.
[0012]
(Prior art 3)
Further, as one of similar technical fields, for example, there is a selection technique in Japanese Patent Laid-Open No. 2000-332893 (Mr. Takahashi) (see Patent Document 5). However, this technology is targeted mainly at equipment outside the communication station, and the configuration and characteristics of off-site communication media with special equipment structure (tape structure) and wiring blocks for demand management The communication medium is selected from the wiring block and the wiring block adjacent to the wiring block in consideration of the viewpoints such as the above-mentioned technology. The above technical field does not take into account the selection of connections and the search function of cable routes and cable routes that are considered necessary for efficient implementation of in-house communication equipment. Since the policy is different from what is intended, the field of the present invention is clearly different.
[0013]
(Prior art 4)
Further, as one of technical fields within the management target range of similar communication media, Japanese Patent Laid-Open No. 2000-69106 (Wiring Management System) (see Patent Document 6) and Japanese Patent Laid-Open No. 11-31178 (Wiring Management System). And a wiring management method) (see Patent Document 7). However, although the above technology is the same in the part where the target communication medium is in the communication station, it is only one method for managing the communication medium, and the efficient, quick and accurate management of the equipment in the communication station and the circuit design This is intended for in-kind verification. In addition, because it is a technology in the wiring management system for performing efficient wiring work, the selection processing part considered necessary for implementation selection on the basis of establishment of equipment management is not taken into account. The policy is different from what the above technical field is aimed at in that it does not take into account the connection search and cable route and core route search functions that are considered necessary for efficient communication equipment selection. This is clearly different from the field targeted by the present invention.
[0014]
[Patent Document 1]
JP-A-10-134108
[Patent Document 2]
JP-A-9-161105
[Patent Document 3]
JP-A-9-257503
[Patent Document 4]
JP 2001-142952 A
[Patent Document 5]
JP 2000-332893 A
[Patent Document 6]
JP 2000-69106 A
[Patent Document 7]
JP-A-11-31178
[0015]
[Problems to be solved by the invention]
Here, the features in carrying out selection in the communication station targeted by the present invention will be described.
In order to select the equipment in the communication station, in addition to searching for the path of the arbitrary point-to-point terminal (connection between the cable and the cable rack or the in-house device) in the communication medium group in the communication station, the heart forming the path It is necessary to search for a line, an adapter terminal, and a multi-branch / wavelength multiplexing adapter terminal. In addition, in order to select the path of any point-to-point terminal in the communication medium group in the communication station, service provision conditions, equipment conditions, usage status and status of communication medium components, loss (connection point) / number of connection work points It is necessary to select a route that takes into consideration. Here, the service provision conditions are the communication method and the number of optical branches, the communication wavelength, the test wavelength, the connector reflection characteristics (optical characteristics), the optical transmission mode, the number of necessary media, the planned use date / the planned abolition date. The equipment conditions are the shape of the connector and adapter terminal attached to the cable core, and connection is not possible unless the shape of both is the same. The usage status of the components of the communication medium means how much the communication medium is in the available equipment state because it uses the free equipment of each communication medium (equipment that is not used for the service) when providing the service. This is the usage situation here.
[0016]
The status of the components of the communication medium is to determine whether each communication medium can be used for service. The status includes “in use in good equipment”, “empty equipment in good equipment”, “bad equipment” ”,“ Reserved with good equipment (vacant) ”,“ Reserved with good equipment (in use) ”, and when selecting a communication medium for service provision, select“ Empty equipment with good equipment ” Then, after changing to “Reserved with good equipment (vacant)”, change to “In use with good equipment” after starting the service provision. In addition, when selecting a service when it is abolished, change “in use with good equipment” to “reserved with good equipment (in use)” and change to “empty equipment with good equipment” after the service is abolished. . The communication medium group must connect the communication media with a connector or the like when configuring the path between the two points. Therefore, communication loss increases as the number of connection points between two points increases, and connection work occurs at those connection points. Therefore, when configuring a communication medium path, the fewer the connection points, the higher the quality. It is good and workability is good.
[0017]
Therefore, when selecting equipment in a communication station, let's select a route that considers the service provision conditions, equipment conditions, usage status and status of communication medium components, loss (connection point) / number of connection work points. To do so, there are an infinite number of core route patterns. In particular, with the recent technological advancement, the service forms (direct acquisition, multi-branch, wavelength multiplexing, etc.) have become more complex, and the selection policy has changed further for the first and second subscribers, covering all conditions. Enormous operation is required to select equipment. Therefore, as a special feature in implementing selection within a communication station, in addition to a communication medium selection method that selects the path of any point-to-point terminal, selection that takes into account multi-branch services and wavelength multiplexing services is efficient. It means that it needs to be implemented.
[0018]
(Task)
As an issue of equipment selection in the above communication station, in order to carry out route selection, it is solved that there are innumerable condition patterns and various service forms (direct acquisition, multi-branch, wavelength multiplexing, etc.) However, there are the following two problems in selecting the corresponding path.
(1) The first problem is that, according to the prior art, an optical signal, which is a service providing signal, is branched into a plurality of core wires and joined between the paths of any two point terminals in the communication medium group in the communication station. The multi-branch service that provides services to consumers was not taken into account. These are characteristic methods in a communication station, and a single core can be shared by a plurality of subscribers using a multi-branch device. In this way, the device to the branch device are in use, but the concept that the terminal on the output side of the branch device can be used by other subscribers is not taken into account, and the path of the point-to-point terminal is selected. I couldn't. Along with this, there is no selection technology that is conscious of the service that branches in the station, so in the case of selecting the first subscriber of the multi-branch service, it is possible to select manually, but it passes through multiple multi-branch devices. A selection route pattern is generated enormously in the selection such as when it is necessary. For this reason, when trying to make selections that consider each service condition and the usage pattern of multi-branch devices in addition to the usage status of communication facilities, there are many points that are not considered in existing technologies. Enormous operation was required for the operator to select from the line patterns. For this reason, the standard for extracting the optimum route from the vast number of cardiac route candidates ultimately depends largely on the engineer for selecting the optimum selection candidate from the selection candidates.
[0019]
(2) According to the prior art, the second problem is based on the premise that there is one terminal inside the path between any two point terminals in the communication medium group in the communication station. In the case of wavelength multiplexing service, there are a plurality of internal terminals. However, with existing technology, optical signals that are service providing signals can be provided from a plurality of devices, a plurality of signals can be aggregated into one signal by a wavelength multiplexing branch device, and communication signals can be transmitted to a plurality of media. The wavelength multiplexing service of branching was not taken into account. These are characteristic methods in a communication station, and a plurality of services can be aggregated and divided into multiple branches so that they can be shared by a plurality of subscribers. However, since there is no selection technology that takes into account wavelength-multiplexed services within a station, in the case of wavelength multiplexing selection, services are provided by multiplexing and branching multiple systems of services. However, when trying to select a multi-branch device that takes into account the usage pattern, there are many points that are not taken into account by the existing technology, and the operation is enormous for the operator to select from the whole core pattern. It was hanging. For this reason, the standard for extracting the optimum route from the vast number of cardiac route candidates ultimately depends largely on the engineer for selecting the optimum selection candidate from the selection candidates.
[0020]
(the purpose)
  Therefore, an object of the present invention is to enable selection considering a multi-branch service and a wavelength division multiplexing service in addition to a communication medium selection method for selecting a terminal route between two arbitrary points in a communication medium group in a communication station. Communication mediumSelection methodAnd a program for performing communication medium selection processing and a recording medium on which the program is recorded.
[0021]
  The communication medium selection method of the present invention includes:A method for selecting a communication medium by a communication medium selection device in a communication station, in which the number of cores, connector type, connector reflection characteristics, optical transmission are input when selecting a facility selection by inputting a reservation date for carrying out construction work. The mode, filter type, optical branching number equipment selection conditions, the weighting factor for the evaluation value used when calculating the path with the highest evaluation value, input processing, input selection start point and end point, If already connected, the connection status on the lower side will be taken into account, the connection status will be reduced so that the search amount of the core route that is a candidate for in-house selection can be reduced, and the selection can be handled even in multi-branch services and wavelength multiplexing services The cable route that covers the combination of each node and cable existing between the start point and the inside selection reference point is searched, and each core in the cable of the acquired cable route is searched. And search for the core route that covers the combination of each terminal in the node, and select the route with the highest value of the evaluation formula set in advance as one candidate selection among all the core route that is the selection candidate When implementing, use the pre-established evaluation formula to extract the core route with the highest evaluation value, calculate the evaluation value of each core route, and refer to the calculation result to obtain the highest evaluation. If the core route that was the value is displayed, then multiple candidates are extracted as selection results from all the core routes that are candidates for selection, and the route selection is performed in descending order of evaluation value, service Displays all core routes that can be opened, and if one of the routes is selected, save the approved reservation result or route selection result in the system after the completion of all selection processes, or Cancel the route selection result In addition, when the selection process is repeated multiple times including multiple core selection / wavelength multiplexing, communication is performed by repeating the selection of the required core segment again while retaining the result output obtained in the above processing procedure. It is characterized by selecting between two points in the station.
[0022]
  Further, the connection status search process is a partial process by the path search processing unit in the communication medium selection device, and in the process of extracting the inside selection reference point by the connection search process by the direct acquisition service, the selection condition The start point / end point information of the outermost terminal and the innermost terminal, which is one of the terminals, is acquired, and the information of the inner terminal that is the end point is acquired from the start point / end point information, and the acquired inner terminal If the connection status of the internal terminal is not connected, the corresponding terminal is identified as the internal selection reference point, the terminal is acquired, and the acquired internal terminal If the connection status is already connected, use the procedure to extract the information of the connection destination outside the acquired terminal and connector and check the connection status of the external equipment acquired again. Search until it is disconnected The pin to identify the house side selection reference point, acquires the terminalIt is characterized by that.
[0023]
  A communication medium selection device used in the communication medium selection method of the present invention includes a communication medium basic information storage unit that stores the properties of each communication medium, a communication medium configuration storage unit that stores the state of each communication medium, and a communication medium. A path search processing unit for determining a candidate for a path between any two points in the group, an optimum path calculation processing unit for determining a path with the highest evaluation value with respect to a predefined evaluation formula, and an extracted path Communication medium path reservation storage unit, and a control unit for controlling each of the constituent function units.
[0024]
  The path search unit sets a selection condition, determines whether the selection condition is correct, reduces the search amount of the core route as a selection candidate, multi-branch service, wavelength multiplexing Connection search unit that enables selection support in the service, cable route search unit that searches for the route between the cable between the start point and the end point, the cable rack, and the in-house device, and the cable searched by the cable route search unit Based on the selection condition from the route, it has a core route that searches the route of the cable core and the adapter terminal and the route of the adapter terminal, and a storage unit that stores the core route searched by the core route search unit ing.
[0025]
  The optimum path calculation processing unit is evaluated and calculated, a route evaluation setting unit for setting a parameter for evaluating a core route, a route evaluation calculation unit for calculating a core route selected based on the evaluation parameter, An evaluation unit that evaluates the core route and a storage unit that stores the evaluated core route.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
(Communication medium selection device)
FIG. 1 is a functional block diagram of a communication medium selection device according to an embodiment of the present invention. First, the communication medium is defined. Communication media is roughly divided into links and nodes. A node is an exchange (or transmission device) that transmits communication signals, or a rack or a connecting device (called MDF, FTM, or closure) for bundling links (cable lines) to collect lines. A link is a cable mainly connecting nodes, and there are metal cables and optical cables. In this way, a structure composed of links and nodes is called a communication medium.
[0027]
The communication medium selection device in FIG. 1 includes the following functional units. That is, the nature of the communication medium in the communication station, for example, if it is a cable, the properties are the number of cores, connector type, connector reflection characteristics (optical characteristics), optical transmission mode, filter type (filter for cutting the test wavelength If there is an adapter terminal, there are the number of terminals, connector type, connector reflection characteristics (optical characteristics), filter type, optical branching number, and the communication medium basic information storage unit 101 storing these properties; The communication relationship between each communication medium, the connection relationship and the communication medium configuration storage unit 102 that stores the usage status and state of each communication medium, and the service provision condition, the facility condition, the path between any two points of the communication medium group, A path search processing unit 106 that searches for a path candidate in consideration of the usage status and state of the components of the communication medium and determines a path candidate, and the path condition determined by the path search processing unit 106 Among the path candidates selected from the path candidates determined by the path search processing unit 106 and the optimum path calculation processing unit 105 that determines an optimal path with a small number of loss (connection points) / connection work points, or The communication medium route reservation storage unit 104 stores the optimum route determined by the optimum route calculation processing unit 105, and the control unit 100 controls each component function unit.
[0028]
When an arbitrary point-to-point terminal of a communication medium group and a service provision condition are designated, the path search processing unit 106 includes accommodation relations, connection relations and communication relations between the communication media stored in the communication medium configuration storage unit 102. It is characterized by selecting a path that can connect between two arbitrary terminals of a specified communication medium group based on the use status and state of the communication medium and the nature of each communication medium stored in the communication medium basic information storage unit 101. Yes.
[0029]
(Route search processing unit)
FIG. 2 is a block diagram configuration of the path search processing unit in FIG.
The route search processing unit 106 determines a selection condition, determines whether or not the condition is correct, reduces the search amount of the core route that is the in-house selection candidate, multi-branch service, wavelength multiplexing Searched by the connection search unit 114-1, which enables selection support in the service, the cable route search unit 114-2 that searches for the cable, the cable rack, and the in-house device, and the cable route search unit 114-2 A cable route search unit 115 that searches for a cable core and an adapter terminal from the cable route based on a selection condition, and a storage unit 116 that stores the cable route searched by the cable route search unit 115 I have.
[0030]
The cable route search unit 114-2 holds a connection search technique for establishing selection of wavelength multiplexing service and multi-branch service, which is one of the problems. For example, if the first subscriber is open, the service terminal is acquired at the second terminal, the internal terminal inside the site is acquired, and if the terminal seems to be connected, the lower side (location Acquire information on the cable connected to the outside (outside), and check the connection status of the cable connector on the lower side (outside) based on that information. If the connection status of the corresponding cable connector (terminal) is not connected, the corresponding connector (terminal) is the reference point for selection on the inside, and if it is already connected, the connection status is further traced down to the lower side. The connector (terminal) that is not connected becomes the reference point for selecting the inside. Therefore, in the case of direct acquisition service, the connection point is traced to the unconnected connector (terminal) on the lower side, and finally the connector (terminal) which is an unconnected part is connected to the internal selection reference point. The connector (terminal) that is the final destination is used as the reference point for selection on the inside.
[0031]
In the case of multi-branch service, if the inside terminal (end point) is not connected in the case of selecting the first subscriber, it is selected via cable route search and core route search between the start point and end point. Ends. Conversely, in the case of the second subscriber, the connection is searched up to the output terminal of the corresponding branch device, and if a free terminal is found in the corresponding output terminal, the corresponding free terminal becomes the inside selection reference point. . In the case of wavelength multiplex branching, when the first subscriber is selected, the processing is the same as the multi-branch service, but since there are two internal terminals (wavelength 1 and wavelength 2), the wavelength is 1 degree. It is confirmed that the selection of 1 is completed, and the route selection of the wavelength 2 is started while holding the selection result information of the wavelength 1 again. Conversely, in the case of the selection of the second subscriber, a connection search is performed on both systems, and as a result, it is confirmed that the branching device is for wavelength multiplexing that matches the service conditions and that there is an empty terminal on the output side. Then, the corresponding empty terminal becomes the inside selection reference point.
[0032]
One of the effects of the above connection search technology is that the terminal (connector) that is the reference point for the inside selection is below the inside terminal (end point) regardless of the service type (direct acquisition, multi-branch, wavelength multiplexing). In the case of moving to the above, there is a function to shorten the search process between two points in carrying out the cable route and core route search shown above, between the two points so far (the terminal of the outside cable rack, A large number of core routes are extracted in cable route search and core route search (inside equipment or inside terminal of cable rack), and the service conditions and equipment suitability of the core route are confirmed one by one. The efficiency of enormous processing is realized in the part that goes.
[0033]
As a second effect of the above connection search technology, when selecting the second subscriber of the multi-branch service, there is a branch device that adapts to the service conditions in the middle of the connection search, and there is an empty terminal on the output side of the corresponding device. If there is a terminal, the youngest terminal in the vacant terminal becomes the inside selection reference point, and the position of the in-house terminal has already moved before starting the cable search and the core route search. Therefore, it is possible to easily select even a multi-branch service. Similarly to the above, the terminal (connector) that is the reference point for selecting the inside has the function of shortening the search section between the two points when performing the cable route and the core route route search. The efficiency of enormous extraction of the core route in the cable route search and the core route search between the terminals (between the outside cable rack and the in-house device or the inside terminal of the cable rack) is realized. Also, it is not necessary for the operator or the system side to explicitly check whether the current subscriber is the first subscriber or the second subscriber at the time of selection. Up to the corresponding branch device is already connected, and it is possible to easily determine after waiting for the result.
[0034]
Further, as a third effect of the connection search technology, the same can be said for the multi-branch service when selecting the second subscriber of the wavelength division multiplexing service. If there is a wavelength multiplexing branch device that adapts to the service conditions in the middle of the connection search and there is an empty terminal on the output side of the device, the lowest numbered terminal in the empty terminal is selected inside. Since the position of the in-house terminal has already moved before the cable search and the core route search are started as a reference point, selection can be easily performed even in the wavelength multiplexing service. In the same way as above, the terminal (connector) that becomes the reference point for selecting the inside has the function of shortening the search section in performing the cable route and the core route search. Efficient extraction of enormous core route is realized. Similarly to the multi-branch service, it is not necessary for the operator or system side to explicitly check whether the current subscriber is the first subscriber or the second subscriber at the time of selection. For example, it is always possible to connect to the corresponding branch device at the time of connection search, and it is possible to easily determine after waiting for the result.
[0035]
Furthermore, in the case of wavelength multiplexing selection, even if it is the first subscriber's selection, the selection is first made between one device and the external terminal, and when the selection route is determined, the core line is selected. The route is held on the system and held in a state of a holding core wire that is positioned between the waiting waiting core wire and the active core wire. While taking into account the held core wire, the selection between the terminal in the second and subsequent devices and the corresponding wavelength multiplexing branch device is performed in the order of search, route search, and core route search. Considering the feature of selecting communication, enormous efficiency of extracting the core route in the cable route search and the core route search described above can be realized.
[0036]
FIG. 3 is a block diagram of the optimum path calculation processing unit in FIG.
The optimum path calculation processing unit 105 is evaluated and calculated by a route evaluation setting unit 117 that sets parameters for evaluating the core route, a route evaluation calculation unit 118 that calculates a core route selected based on the evaluation parameters, An evaluation unit 119 for evaluating the core line route and a storage unit 120 for storing the evaluated core line route are provided.
The route evaluation setting unit 117 has a function of considering light loss and workability as evaluation parameters. Here, the optical loss generally increases in proportion to the transmission distance and the number of connection points between the cable core and the adapter terminal. However, the optical loss due to the transmission distance is short in the communication station targeted by the present invention. Since the optical loss is negligible compared to the optical loss due to the connection point, it is defined that the optical loss is proportional to the number of connection points. For evaluation, the smaller the optical loss, the better. Workability is the amount of creation that connects the cable core and adapter terminal when providing service. At the connection point of the core route, there are points that are connected in advance and points that are not connected (connection work points). is there. The amount of work increases in proportion to this connection work point. As the amount of work increases, workability deteriorates as a result. Therefore, it is defined that workability deteriorates in proportion to the number of connection work points.
[0037]
(Communication medium selection method)
FIG. 5 is an operation flowchart of the communication medium selection method according to the embodiment of the present invention.
As the flow to select, enter the reservation date for construction work such as ○ month × day (300), and then the number of cores (terminals), connector type, connector reflection characteristics (optical) Characteristics), optical transmission mode, filter type (filter for cutting the test wavelength), optical branching number equipment selection condition, and weighting factor for the evaluation value used when calculating (305) the path. After inputting the above conditions (301), the selection start / end points are input (302), and the connection status is searched based on the end point (terminal) information on the inside (303-1). Next, a cable route existing between the starting point and the inside selection reference point is searched (303-2), and the core route of the acquired cable route is searched (304). When one candidate is selected from all the core routes of the search result, an evaluation value of each path is calculated in order to extract one of the core routes having the highest evaluation value (305).
[0038]
Next, the core route having the highest evaluation value among the evaluation values of all candidates for the core route is displayed (306). This time, when extracting a plurality of candidates as a selection result and selecting a route in descending order of evaluation value, a plurality of routes that are all core routes are selected by the operator. (307). Also, one of the plurality of paths is selected by the operator (308), and after the completion of all selection processes, the reservation result is accepted by the operator and the path selection result is stored in the system (309). Alternatively, the route selection result can be canceled (310) at the operator's discretion. Finally, in the case where it is necessary to repeat the selection process multiple times such as selection of multiple cores, or in the case of wavelength multiplexing service, it is necessary to restart from the procedure 300 while maintaining the result output obtained in the above procedure. The selection is completed by repeating the selection of the line segment.
[0039]
(Connection search)
The connection search function in the direct acquisition service will be described with reference to FIGS. 6, 12, and 13.
(For direct receipt service)
FIG. 6 is an operation flowchart of a connection search procedure (in the case of direct acquisition service).
As a connection search procedure using the direct acquisition service, the start point / end point information of the outermost terminal and the innermost terminal, which is one of the selection conditions, is acquired (328), and the inner side of the start point / end point information is acquired. Terminal information is acquired (329). Next, the connection status of the acquired in-house terminal (end point) is confirmed (330). If the connection status is not connected (no connection) (330-2), the corresponding terminal is set as the in-house selection reference point. Identify (332). Conversely, if the acquired connection status is already connected (present) (330-1), information on the connection destination on the lower side (reverse side / outside) of the acquired equipment (terminal / connector) is extracted. (331), and the connection status of the acquired equipment is confirmed again (330). This search process continues until it is finally unconnected (no) (330-2), and when it is unconnected, the corresponding terminal is identified as the inside selection criterion and acquired (332). .
[0040]
12 and 13 are explanatory diagrams of a specific connection search implementation method in the case of the direct service.
As an example of a specific connection search, as shown in FIG. 12, first, an end point (inside terminal) on the inside is obtained, and then the connection status is confirmed. At this point in time, it is not determined whether the reference point is the inside selection reference point, so the reference point {circle over (1)} is obtained. After that, it is confirmed that the inside terminal has been connected, and the cable name on the lower side is obtained from the information of the connected connector. Check the connection status of the connector on the lower side from the core number of the acquired cable name. If the connection is confirmed at this time, the initial reference point (1) has moved to the lower side, so that it becomes the reference point (2). Checking the connection state on the lower side in this way and tracking it to the unconnected position is called connection search. In this case, the connection is not connected at the adapter terminal outside the relay cable rack 1. Therefore, the inside selection reference point here becomes the terminal (STEP 1 to STEP 3).
Next, as shown in FIG. 13, it is clear from the connection search that the inside reference point and the device terminal have already been connected, so other equipment in the equipment (cable adapter terminal) in the corresponding section. Cannot be used. Therefore, the substantial selection target range is only from the outside terminal to the in-house selection reference point. After carrying out this process, the process proceeds to the cable route search procedure.
[0041]
Next, the connection search function in the multi-branch service will be described with reference to FIGS.
(For multi-branch service)
FIG. 7 is a flowchart of a connection search procedure in the case of a multi-branch service. The start point / end point information of the outermost terminal and the innermost terminal, which is also one of the selection conditions, is acquired (328). Next, information on the inside terminal is acquired from the start point / end point information (329), and if the selection condition is a multi-branch service, the connection status of the acquired equipment is confirmed (430). If the acquired connection status is not connected (no connection) (430-2), the corresponding terminal is identified and acquired as the inside selection reference point (436). Conversely, if the acquired connection status is already connected (present) (430-1), information on the connection destination on the lower side (reverse side / outside) of the acquired equipment (terminal / connector) is extracted. (431). If the terminal type of the connection destination is neither the external terminal (start point) nor the output terminal of the branch device using the procedure (432) for confirming the connection destination of the acquired equipment (432-1), again 320 The connection status of the equipment is confirmed at (430).
[0042]
Conversely, if the terminal type of the connection destination is an external terminal (starting point) (342-2), it indicates that there is no branch device between the internal terminal and the external terminal, and an error occurs ( 435). If the terminal type of the connection destination is an output terminal of the branch device (432-3), the type of branch device (number of branches, connector reflection characteristics, etc.) is confirmed (433). Next, when the initial defined service condition is not met (433-2), an error is set (435). When the initial defined service condition is met (433-1), the determination device is further processed. The state of the vacant terminal on the output side is confirmed (434). When there is an empty terminal on the output side (434-1), the corresponding terminal is identified and acquired as the inside selection reference point (436). Finally, if there is no empty terminal on the output side (434-2), an error is set (435).
[0043]
FIG. 15 is an explanatory diagram of a specific connection search implementation method in the case of a multi-branch / wavelength multiplexing service.
As with the direct acquisition service, the inside terminal is acquired from the information of the start point and end point acquired in the initial stage, and the reference point is held. Check whether the inside terminal is connected or not, and if it is connected, search the outside connection state of the equipment connected to the lower side, branch equipment or outside terminal (start point) or unconnected place Move the reference point until it reaches. On the way, when the branch device in the splitter rack is reached, it is checked whether the type of branch device such as the number of branches meets the service conditions. If the branch device meets the service conditions, The connection status of the output side terminal is confirmed, and if there is an empty terminal, it becomes the inside selection criterion. In this case, even if there is a direct-collection system (direct-acquisition type) branch device on the way, it is not recognized as a branch device, and the connection search on the lower side is performed again. Therefore, as shown in FIG. 15, in the relay cable rack, even if the direct connection system branch device is used, the search on the lower side is executed as it is on the main connection search, and the branch other than the corresponding direct acquisition system is executed. The above check works when hitting the device. Similarly, if a branch device is not connected and an unconnected part is specified on the way, the corresponding terminal (connector) becomes the reference point for selection inside the multi-branch service, and the cable route search for the direct service is performed. Then, the core route search is performed, and the core route is acquired.
[0044]
(For wavelength multiplexing service)
Next, the connection search function in the wavelength division multiplexing service will be described with reference to FIGS.
FIG. 8 is a flowchart showing the procedure of connection search in the case of the wavelength division multiplexing service.
The start point / end point information of the outermost terminal and the innermost terminal, which is also one of the selection conditions, is acquired (328). Next, the information on the inside terminal is acquired from the start point / end point information (329), and when the selection condition is the wavelength division multiplexing service, the connection status of the acquired equipment is confirmed (530). If the acquired connection status is not connected (no connection) (530-2), the corresponding terminal is identified as the inside selection reference point and acquired (538). Conversely, if the acquired connection status is already connected (present) (530-1), information on the connection destination on the lower side (reverse side / outside) of the acquired equipment (terminal / connector) is extracted. (531). Furthermore, using the procedure (532) for confirming the connection destination of the acquired equipment, if the terminal type of the connection destination is neither an external terminal (start point) nor an output terminal of a wavelength multiplexing branching device (532-) 1) The connection status of the equipment is confirmed again at 530 (530).
[0045]
Next, when the terminal type of the connection destination is an outside terminal (starting point) (532-2), in order to indicate that there is no wavelength multiplexing branch device between the inside terminal and the outside terminal, An error is assumed (537). On the other hand, when the terminal type of the connection destination is an output terminal of a wavelength multiplexing branch device (532-3), the wavelength multiplexing branch device type (number of branches, connector reflection characteristics, etc.) is changed. Confirm (533), and if it does not match the initially defined service conditions (533-2), an error is set (537). On the other hand, if the service condition matches the initially defined service condition (533-1), the empty terminal status on the output side of the branch device is further confirmed (534).
Next, when the connection search of this terminal is the wavelength 2 of the second terminal which is not the wavelength 1 (first terminal) (534-2), the planned use branching device of the wavelength 1 (first terminal) which has already been selected. (535). If the same device is not used (535-2), an error is determined (537). Conversely, when the same device is used (535-1), or when the connection search of this terminal is wavelength 1 (first terminal) at 534 (534-1), the output of the branch device is further increased. The vacant terminal status on the side is confirmed (536). When there is an empty terminal on the output side (536-1), the corresponding terminal is identified and acquired as the inside selection reference point (538), and finally when there is no empty terminal on the output side ( 536-2) and an error (537).
[0046]
With reference to FIG. 15, a specific connection search method of the wavelength division multiplexing service method will be described.
Similarly to the direct acquisition service, the wavelength division multiplexing service first acquires the inner terminal of the wavelength 1 from the start / end point information acquired in the initial stage, and holds the reference point. Check whether the inside terminal is connected or not, and if it is connected, search the outside connection state of the equipment connected to the lower side, branch equipment or outside terminal (start point) or unconnected place Move the reference point until it reaches. On the way, when the branch device in the splitter rack is reached, it is checked whether the type of branch device such as the number of branches meets the service conditions. If the branch device meets the service conditions, The connection status of the output side terminal is confirmed, and if there is a vacant terminal, it becomes the inside selection reference point. Further, next, the inner terminal of wavelength 2 is acquired and the reference point is held. Check whether the inside terminal is connected or not, and if it is connected, search the outside connection state of the equipment connected to the lower side, branch equipment or outside terminal (start point) or unconnected place Move the reference point until it reaches.
[0047]
On the way, when the branch device in the splitter rack is reached, it is checked whether the type of branch device such as the number of branches meets the service conditions, and if the branch device meets the service conditions, and If it is the same as the branch device to be used at the wavelength 1, the connection status of the output side terminal is confirmed, and if there is an empty terminal, it becomes the inside selection reference point. Conversely, if the wavelength 1 and the wavelength 2 are different branching devices, the service cannot be provided, and in this case, an error occurs. In this case, similarly to the multi-branch service, even if a direct-collection system (direct-acquisition type) branch device exists in the middle, it is not recognized as a branch device, and the lower side connection search is performed again. For this reason, even if the direct connection system branch device is used, the above check is performed when a search on the lower side is executed as it is in this connection search and a branch device other than the corresponding direct acquisition system is hit. Similarly, if a branch device is not connected and an unconnected part is specified in the middle, the corresponding terminal (connector) becomes the reference point for selection inside the wavelength division multiplexing service, and the cable route search for the direct service is performed. Then, the core route search is performed, and the core route is acquired.
[0048]
FIG. 16 and FIG. 17 are explanatory diagrams of connection search for the first subscriber of wavelength multiplexing showing an embodiment of the present invention.
Here, contrary to the example shown in FIG. 15, the contents of selection processing when both wavelength 1 and wavelength 2 are in an unconnected state are shown.
First, as an initial state, since the inside selection reference point is not connected in both systems, it becomes an end point terminal. In this case, first, a wavelength 1 terminal is acquired, and a wavelength 1 terminal is selected and implemented with respect to the external terminal. After the cable route search and the core route search, each core route is evaluated and the acquisition of the core route having the highest evaluation value is completed. While holding the acquired information about the core route, this time the wavelength 2 selection process is performed. In the case of wavelength 2, since the external terminal (starting point) and the wavelength multiplexing branching device have already been selected, the input side terminal of the wavelength multiplexing branching device and the wavelength 2 internal terminal are the selection criteria inside. A point is selected, and selection is performed in the section. When the wavelength 2 is selected and the selection is completed, the selection process is completed and the equipment selection is completed.
[0049]
(Cable route search / Core route search)
The functions of the cable route search and the core route search will be described with reference to the procedures of FIGS. 9 to 11 and the explanatory diagram of FIG.
FIG. 9 is an operation flowchart showing the procedure for calculating the cable route search. Subsequent to the connection search, information on the cable rack in which the start terminal is accommodated is acquired, information on the cable accommodated in the corresponding cable rack is acquired, and search for the cable route is started (311). Next, the inside selection reference point is extracted from the result of the connection search (312). A cable accommodated on the reverse side (upper side) of the cable rack located on the upper side (inside) of the acquired cable information is searched (313). At this time, if the presence of the cable is confirmed on the upper side of the corresponding cable rack, it is confirmed that the next cable rack has been reached (315), and conversely if the cable rack has not been reached, After confirming that there is no route, the cable route search ends (314).
[0050]
If it is confirmed that the cable rack has been reached following 315, whether the reaching cable rack is not the cable rack or the in-house device at the inside selection reference point terminal (315-1), or the reaching cable rack is connected to the upper part of the cable rack. Whether it is a cable rack or in-house device that is not and is not an in-house selection reference point terminal (315-2), or whether the reaching cable rack is a cable rack or in-house device of an in-house selection reference point terminal (315-3) Check each one. When the reaching cable rack is not the cable rack of the inside-side selection reference point terminal or the in-house device (315-1), the cable accommodated in the cable rack is searched again (313). Next, when the reaching cable rack is a cable rack or an in-house device that has no cable in the upper part and is not the inside selection reference point terminal (315-2), when it does not reach the next cable rack, Make sure there is no route. When the reaching cable rack is a cable rack or an in-house device at the in-house selection reference point terminal (315-3), the cable route is determined (316).
[0051]
FIG. 14 is an explanatory diagram of a specific cable route search implementation method.
An example of cable route search is described. In FIG. 14, a start point terminal and an end point terminal exist in the cable rack 1 and the in-house device 2, respectively. The terminals are not connected to each other, and the inside selection reference point does not move accordingly. For this reason, it is understood that the selection target range is the cable rack 1 and the in-house device 2 having the start point / end point terminal.
When cable routes are extracted from the above information, first, the type of cable laid in the cable rack 1 including the start point terminal is acquired. At this time, the acquired cables are the in-house cables 1 and 3. If the cable rack which exists in the upper part side (place inside) of each acquired cable is acquired, the cable racks 3 and 4 can be acquired similarly. Since the acquired cable rack is neither the cable rack including the in-house selection reference point nor the in-house device, the route on the upper side is further searched.
[0052]
At this time, when the cables laid in the respective cable racks are acquired, the in-house cables 6 and 8 are obtained in the cable rack 3 and the in-house cables 7 and 9 are obtained in the cable rack 4. When the node information on the upper side of the four cables is acquired, the in-house cables 6 and 8 are in the cable rack 3 and the in-house cables 7 and 9 are in the cable rack 4. When the node information on the upper side of the above four cables is acquired, the in-house devices 1 and 2 can be acquired. At this time, among the in-house devices 1 and 2, the in-house device 2 is clearly the cable rack or in-house device having the in-house selection reference point, so the finally remaining cables are the in-house cables 8 and 9. Therefore, the cable and rack pattern connecting the cable rack 1 and the in-house device 2 is
(1) Cable rack (1) Local cable (1) Cable rack (3) Local cable (8) Local equipment (2),
(2) Cable rack 1 In-house cable 3 In-house cable rack 4 In-house cable 9 In-house device 2 The above two routes become cable routes.
[0053]
(Calculation of core route search)
FIG. 10 is an operation flowchart showing a procedure for searching for a cardiac route.
For each cable route searched, a search is started from the start point terminal (317), and toward the end point terminal, the upper end side cable or adapter terminal is connected to the end and the end of the cable core or adapter terminal that is not connected. Search (318). When searching at 318, is it possible to acquire a core route as a route (318-1), or cannot acquire a core route as a route (318-2), and the searched adapter terminal is a terminal terminal (318-3) is confirmed. As a result, when the core route can be acquired as a route (318-1), the cable is connected to the end terminal on the upper side or to the end terminal on the upper side, and the end terminal side is already connected and unconnected on the upper side. A core wire or adapter terminal is searched (318). Further, if the core route cannot be acquired as a route (318-2), it is determined that the core route cannot be acquired, and the core route is uncertain (319). Finally, if the searched adapter terminal is a terminal terminal (318-3), the acquired core line route (301-302) suitability for the initially set service and wavelength multiplexing selection wavelength A check is also performed to confirm simultaneously whether or not the corresponding ports of 1 and 2 are using the same wavelength (320). As a result of the above procedure, if there is no compatibility with the service (320-2), the core route is uncertain (319) by saying that the core route cannot be acquired. Conversely, if there is suitability with the service (320-1), the acquired core route is determined (321).
[0054]
With reference to FIG. 14, a specific method for conducting a cardiac route search will be described.
In the description of FIG. 14 described above, the cable route search method has been described. However, in the following description, an example of the core route search will be described.
When the route of (1) is extracted from the cable routes acquired in the above, first, the connector connection information on the upper side and the lower side of the in-house cable 1 on the upper side of the cable rack of the starting point terminal is acquired first. Obtain the lowest numbered core wire in the open connection state (in this case, the first core wire of the in-house cable 1) and connect the upper side connected core wires (in this case, the second and third cores of the cable) Line). The opposite end of the cable rack 3 on the upper side of the core wire obtained above (in this case, the first terminal) and the back side are already connected (in this case, the second and fourth terminals) (in this case, The connection state of the front side is acquired, the connection state with the cable connector on the upper side is further checked, and it is determined whether or not the route in the cable route can be routed. In this case, the second terminal on the back side of the cable rack 3 is already connected, but the connection destination is the local cable 6 with a different cable route. Therefore, this terminal cannot be routed and is not subject to the core route. Based on the above results, this time, taking into account the connection status with the in-house cable 8 on the upper side, similarly, the youngest heart of the connection state in which both ends are empty (in this case, the first core wire of the in-house cable 8) Get the line and get the upper connected core (in this case, none).
[0055]
As a subject of the core route obtained finally,
1: In-house cable 1 = core numbers 1 and 3
2: Cable rack 3 = terminal numbers 1 and 4
3: In-house cable 8 = core number 1
It becomes.
The following candidates that cover the patterns of equipment for each core route
(1) Start terminal ⇔In-house cable 1 (No. 1 core wire) ⇔Cable rack 3 (No. 1 terminal) 内 In-house cable 8 (Core wire number 1) ⇔End terminal
(2) Start point terminal 内 In-house cable 1 (No. 3 core wire) ⇔ Cable rack 3 (No. 3 terminal) 内 In-house cable 8 (Core wire number 1) ⇔ End point terminal
Becomes the core route candidate in the final cable route, and confirms whether each core route candidate conforms to the service conditions (for example, suitability of connector type of terminal and connector, suitability of reflection characteristics, etc.) ), Candidates covering the suitability are acquired as the core route.
[0056]
(Calculation of optimal path)
FIG. 11 is an operation flowchart showing the procedure for calculating the optimum path.
A unique number is assigned to the confirmed core route group (for example, j = 1... N) and acquired (322). At this time, the number of connected locations of the acquired core route is acquired (323), and the number of unconnected locations of the acquired core route is acquired (324). When the reciprocal value of the number of connected points in the core route is A and the reciprocal value of the number of unconnected points in the core route is B, the number of connected points and the number of unconnected points acquired in the above 323 and 324 are used. Then, A and B are calculated (325), and the evaluation values are respectively set to A and B using the A and B values obtained in the above 325 using the count values set in the initial (301). Is obtained by multiplying and adding the coefficient value (weight) (326). Of the numbers assigned to the finally acquired core route in the initial stage (322), if the maximum number n is in a relationship of n> j with respect to the acquired route number j, the evaluation of the j + 1th core route is performed. (326-2). On the contrary, if the relationship of n = j is established (326-1), an evaluation value for confirming whether or not the route is the optimum route for each core route is calculated and stored.
[0057]
A specific method for calculating the optimum path will be described with reference to FIG.
In FIG. 14 described above, the core route search and the cable route search have been described. Here, an example of calculating the optimum route will be described.
Evaluation is performed by holding the core route acquired in the above-described route search and acquiring the number of contact points and the number of unconnected points on the route. If the number of connection points increases, the loss value increases accordingly, and the conditions for providing the service deteriorate. In addition, if the number of unconnected locations increases, the number of construction locations increases accordingly, and a process is required to open a service, which increases costs. From this, by calculating the sum of the number of connected points on the core route and the reciprocal of the number of unconnected points, the loss side of each core route that cleared the service conditions and equipment conditions for opening the service and Evaluation can be performed in terms of process. In the case of the core route (1), since there are four connection points and all four points are not connected, an addition value of 1/4 and 1/4 (= 2/4 = 0.5) is the evaluation value. Next, in the case of the core route (2), the number of connected locations is 4 as in (1), but since one location is already connected, the number of unconnected locations is 3. , 1/4 and 1/3 (= 7/12 = 0.58) are the evaluation values. In this case, the values of routes (1) and (2) are compared, and the higher value (in this case (2)) can be acquired as the optimum path.
[0058]
Furthermore, by multiplying each reciprocal number by a weighting coefficient and adding the results, it is possible to carry out an evaluation that is more aware of the specific gravity. For example, when the evaluation value = W (1 / number of connected locations) + C (1 / number of unconnected locations), the operator may consciously change W and C to give more weight to the evaluation parameters. Is possible. Temporarily, there are two core wire routes, one (= A) is the number of connected locations = 2 and the number of unconnected locations = 4, and the other (= B) is the number of connected locations = 4. In the case of the normal calculation formula when the number of unconnected locations = 3, A = (1/2) + (1/4) = 0.75, B = (1/4) + (1 /3)=0.58, and the evaluation of the core route A is high. However, when the operator weights that the evaluation is higher as the number of unconnected portions is smaller, and the value of W is 1 and the value of C is 10, A = 1 × (1/2) + 10 × (1/4) = 3.0, B = 1 × (1/4) + 10 × (1/3) = 3.58, and the core route B is now more highly evaluated.
In this way, it is possible to incorporate an evaluation axis that the operator is aware of using the evaluation formula.
[0059]
Finally, the communication medium selection method of the present invention is a method for selecting a path of a communication medium group in a communication station composed of passive articles. First, the inside selection is performed by performing a connection search. Clarifying the reference point, it is possible not only for direct acquisition services, but also for multi-branch services and wavelength division multiplexing services, and conducts route search (cable route search) with cables, cable racks, in-house devices, After the cable route search, the route is selected by a three-step route search in which a route search (core route search) is performed with the core wire, the cable rack, and the adapter terminal constituting the in-house device. Thereby, since the process of the selection part currently processed manually is processed automatically, the efficiency of selection can be achieved.
[0060]
Note that the communication medium selection method in FIG. 5, the connection search (direct acquisition service) procedure in FIG. 6, the connection search (multi-branch service) procedure in FIG. 7, the connection search (wavelength multiplexing service) procedure in FIG. If the cable route search procedure 9, the core route search procedure in FIG. 10, and the optimum route calculation procedure in FIG. 11 are each programmed and stored in a recording medium such as a CD-ROM, the program can be sold. The present invention can be easily realized by installing and executing a program by attaching a recording medium to a computer of the communication medium selection device.
In addition, the present invention is not a technique specialized for communication equipment, and can be easily applied to other fields.
[0061]
【The invention's effect】
As described above, according to the present invention, it is possible to automatically select an arbitrary inter-terminal path of a communication medium group in a communication station, and to select a multi-branch service or a wavelength division multiplexing service. The communication medium can be selected without depending on the manpower.
[Brief description of the drawings]
FIG. 1 is a block diagram of a communication medium selection device according to an embodiment of the present invention.
2 is a block configuration diagram of a path search processing unit in FIG. 1. FIG.
FIG. 3 is a block configuration diagram of an optimum path calculation processing unit in FIG. 1;
FIG. 4 is a diagram illustrating service characteristics of a communication medium in a communication station.
FIG. 5 is an operation flowchart of a communication medium selection method according to the embodiment of the present invention.
FIG. 6 is a flowchart of a connection search procedure (in the case of a direct acquisition service) according to the present invention.
FIG. 7 is a flowchart of a connection search procedure (in the case of a multi-branch service) according to the present invention.
FIG. 8 is a flowchart of a connection search procedure (in the case of wavelength multiplexing service) according to the present invention.
FIG. 9 is a flowchart showing a procedure for searching for a cable route according to the present invention.
FIG. 10 is a flowchart showing a procedure for searching for a cardiac route according to the present invention.
FIG. 11 is a flowchart showing a procedure for calculating an optimum path according to the present invention.
FIG. 12 is an explanatory diagram of an initial stage of a cable search method showing an embodiment in the case of a direct service according to the present invention.
FIG. 13 is an explanatory diagram of a cable route search method showing an embodiment in the case of direct receipt service of the present invention.
FIG. 14 is an explanatory diagram of a core route and a cable route according to the present invention.
FIG. 15 is an explanatory diagram showing an embodiment of the multi-branch / wavelength multiplexing service of the present invention.
FIG. 16 is an explanatory diagram for selecting only the initial state of wavelength multiplexed first subscriber and wavelength 1 according to the present invention;
FIG. 17 is an explanatory diagram in the case of selecting wavelength 2 of the first subscriber of wavelength multiplexing according to the present invention.
[Explanation of symbols]
100: Control unit, 101: Communication medium basic information storage unit,
102: Communication medium configuration storage unit, 103: Command processing unit,
104 ... Communication medium route reservation storage unit, 105 ... Optimal route calculation processing unit,
106: path search processing unit, 108 ... output unit, 109 ... input unit,
110 ... Input / output interface unit, 112 ... Input / output device,
113 ... Selection condition part, 114-1 ... Connection search part,
114-2 ... cable route search unit, 115 ... core route search unit,
116: Storage unit, 117 ... Route evaluation setting unit, 118 ... Route evaluation calculation unit,
119: Evaluation unit, 120: Storage unit.

Claims (15)

A communication medium selection method by a communication medium selection device in a communication station,
Input the reservation date for construction work,
When selecting equipment, select the number of cores, connector type, connector reflection characteristics, optical transmission mode, filter type, optical branching number, equipment selection conditions, and the evaluation value used when calculating the path with the highest evaluation value. Input the weighting factor,
Input and process the selection start and end points
If the end point on the inside of the site is already connected, search from the in- house device to the connection point on the lowest side, and the equipment from the in- house device to the connection point on the lowest side is excluded from the selection target, thereby reducing the amount of search If there is a branching device in the middle from the in-house device to the lowest connection point, the branching device is used as a site-side selection reference point, taking into account the equipment state that branches from the branching device to the lower part. Search for connected
Search for the cable route that covers each node and cable combination existing between the start point and the inside selection reference point,
Search for the core route that covers the combination of each core wire in the cable of the acquired cable route and each terminal in the node,
When performing route selection with the highest evaluation formula value set in advance as one candidate selection among all core route that is a selection candidate, use the evaluation formula set in advance to evaluate To extract the highest core route
Calculate the evaluation value of each core route,
Referring to the calculation result, display the core route that had the highest evaluation value,
Next, from the whole core route that is a selection candidate, multiple candidates are extracted as selection results,
When selecting routes in descending order of evaluation value, display all core routes where service can be opened,
If one of the multiple paths is selected, after all selection processes are completed, the approved reservation result or path selection result is stored in the system.
Or cancel the route selection result,
If the selection process is repeated multiple times including multiple core selection and wavelength division multiplexing, the selection of necessary core segments is repeated again while maintaining the result output obtained in the above processing procedure. A communication medium selection method characterized in that selection between the two points is performed. The connection status search process is a partial process by a path search processing unit in the communication medium selection device,
In the process of extracting the inside selection reference point by the connection search process by the direct acquisition service, the start point / end point information of the outermost terminal and the innermost terminal, which is one of the selection conditions, is acquired. Among the end point information, obtain information on the inside terminal that is the end point, check the connection status of the obtained inside terminal, and if the connection status of the inside terminal is not connected, select the corresponding terminal. Identify the inside selection reference point, acquire the terminal, and if the acquired connection status of the inside terminal is already connected, extract the information of the acquired terminal and the connection destination outside the connector Then, using the procedure to check the connection status of the equipment outside the site that was acquired again, continue the search until it finally becomes unconnected, identify the corresponding terminal as the inside selection reference point, and The communication medium according to claim 1, wherein: Constant method. The connection status search process is a partial process by a path search processing unit in the communication medium selection device,
In the process of extracting the inside selection reference point by the connection search process by the multi-branch service, the start point / end point information of the outermost terminal and the innermost terminal is acquired, and the end point of the start point / end point information is Acquire information on a certain inside terminal, check the connection status of the acquired inside terminal, and if the acquired inside terminal connection status is not connected, select the corresponding terminal as the inside selection reference point. Identify and acquire the terminal, and if the acquired connection status of the inside terminal is already connected, extract the information of the acquired terminal and the connection destination outside the connector, Using the procedure for checking the connection destination of equipment, if the terminal type of the connection destination is neither the outside terminal that is the starting point nor the output terminal of the branch device, check the connection status of the outside equipment again, and Outside terminal whose outer terminal type is the starting point If there is a branch device between the inside terminal and the outside terminal, an error occurs.If the terminal type of the outside connection destination is the output terminal of the branch device, Use the procedure for checking the type of characteristics, including the number of branches of branch equipment and connector reflection characteristics. If the service conditions do not meet the initial defined service conditions, this is considered an error and meets the initial defined service conditions. In this case, the procedure for confirming the status of empty terminals on the output side of the branch device is further used. If there is an empty terminal on the output side of the branch device that meets the service conditions defined in the initial stage, the corresponding terminal is set. 2. The inside selection reference point is identified as an inside selection reference point, and when there is no empty terminal on the output side of the branch device, this is regarded as an error, and the inside selection reference point is acquired in a multi-branch service. communication Body selection method. The connection status search process is a partial process by a path search processing unit in the communication medium selection device,
In the process of extracting the inside selection reference point by the connection search process by the wavelength division multiplexing service, the information of the outermost terminal as the start point and the innermost terminal as the end point is acquired, and the location information is included in the start point / end point information. Acquire information on the inner terminal, check the connection status of the acquired inner terminal, and if the acquired connection status is not connected, identify the corresponding terminal as the inner selection reference point, and If the acquired connection status is already connected, use the procedure to extract the information of the connection destination outside the acquired terminal and connector and check the connection destination of the acquired equipment. If the destination terminal type is neither the outside terminal that is the starting point nor the output terminal of the wavelength multiplexing branch device, check the connection status of the outside equipment again, and the outside where the connecting terminal type is the starting point If it was a terminal, To indicate that there is no wavelength multiplexing branch device between the external terminals, if this is an error, and the connection destination terminal type is the output terminal of the wavelength multiplexing branch device, the wavelength multiplexing Use the procedure for confirming the characteristic type including the number of branches of the branch device and the connector reflection characteristics. If the service condition does not meet the initially defined service conditions, this is considered an error. Further, when the procedure for checking the available terminal status on the output side of the branch device is used, and the connection search of this terminal is the second terminal other than the first terminal, the planned use branch of the first terminal that has already been selected is used. If the same device is used and the same device is not used, this is regarded as an error. If the same device is used, the connection search for this terminal is performed at the first terminal. In some cases In addition, using the procedure for checking the status of unused terminals on the output side of the branch device, if there is an unused terminal on the output side, the corresponding terminal is identified as the inside selection reference point, and the terminal is obtained. 2. The communication medium selection method according to claim 1, wherein if there is no empty terminal on the output side, this is regarded as an error, and the inside selection reference point is acquired in the wavelength division multiplexing service. The cable route search process is a partial process by a route search processing unit in the communication medium selection device,
By the cable route search process, the information on the cable rack in which the start terminal is accommodated and the cable information in the corresponding cable rack are acquired, the cable route search process is started, and the connection search is performed. The connection point is searched from the inside end terminal until it corresponds to the unconnected part, and the part corresponding to the unconnected terminal is extracted as the inside selection reference point, and then it is located inside the acquired cable information. When searching for the cable housed on the reverse side of the cable rack to be checked and confirming the presence of the cable on the inside, it was confirmed that it reached the next cable rack and did not reach the next cable rack If there is no route, end the cable route search, and if it is confirmed that the cable rack has been reached, The cable rack is not a cable rack or an in-house device of the inside selection reference point terminal, or the reaching cable rack is a cable rack or an in-house device that has no cable at the top and is not the inside selection reference point terminal, or Check whether the destination cable rack is a cable rack or in-house device at the in-house selected reference point terminal. If the destination cable rack is not a cable rack or in-house device at the inside selected reference point terminal, check again the cable rack. A search is performed from the procedure for searching for the cable housed in the cable, and if the reaching cable rack is a cable rack or in-house device that has no cable in the upper part and is not a reference point terminal on the inside side, it reaches the next cable rack. If not, check that there is no route and end the cable route search. , When reaching the cable rack has a cable rack or premises device plant selection reference point terminal, communication media selection method according to claim 1, characterized in that the cable route determined. The core route search process is a partial process by a route search processing unit in the communication medium selection device,
For each cable route extracted in the cable route search process, the search process is started from the start terminal, and toward the end terminal, the cable core wire with the end terminal side connected and unconnected at the internal cable or adapter terminal Or, if you search for an adapter terminal and search, it is possible to acquire a core route as a route, whether it is impossible to acquire a core route as a route, and check whether the searched adapter terminal is a terminal terminal As a result, when the core route can be acquired as the route, the cable core wire or the terminal terminal side of the upper side cable or adapter terminal that is connected to the end side toward the end point terminal on the upper side or the unconnected cable core or If you can't get the core route as a route using the procedure to search for the adapter terminal, you can't get the core route. If the searched adapter terminal is a terminal terminal using the procedure for making the line route uncertain, the first terminal of the acquired core line route to suit the initially set service or wavelength multiplexing selection A check is also performed to confirm whether the second terminal is using the corresponding port of the same branch device. If the result of the check indicates that there is no conformity, it is impossible to obtain the core route. 2. The communication medium selection method according to claim 1, wherein a procedure for making the line route indeterminate is used, and if there is suitability, the acquired core line route is decided. The evaluation value calculation process is a partial process by an optimum path calculation processing unit in the communication medium selection device,
Obtained by assigning a unique number to the confirmed core route group by the core route search process, obtaining the number of connected locations of the obtained core route, and obtaining the number of unconnected locations of the obtained core route When the reciprocal value of the number of connected points in the core route is A and the reciprocal value of the number of unconnected points in the core route is B, the number of connected points and the number of unconnected points obtained above are used. Similar to the procedure for calculating A and B, the evaluation values are multiplied by the weight coefficient values for A and B, respectively, using the A and B values obtained in the above using the initially set count values. If the relationship is the maximum number n> j with respect to the acquired route number j among the numbers obtained by adding together and given in the acquired core route, the evaluation of the j + 1th core route is evaluated. On the contrary, if the relationship of n = j holds, Communication media selection method according to claim 1, wherein the calculating an evaluation value with respect to the line route, stores the calculation result. A communication medium selection program executed by a communication medium selection device in a communication station,
The procedure for inputting the reservation date for carrying out the work to the computer of the communication medium selection device and the selection of equipment, when selecting the number of cores, connector type, connector reflection characteristics, optical transmission mode, filter type, number of optical branches Equipment selection conditions, procedures for input processing of weighting factors for evaluation values used when calculating the route with the highest evaluation value, procedures for input processing of selection start and end points, connection from in- house equipment to the lowest connection point Search and reduce the amount of search by excluding equipment from the in-house device to the lowermost connection point, and if there is a branch device in the middle from the in-house device to the lowermost connection point , with house side selection reference point the branching device, each node and Ke present procedure, between the start point and the plant-side selection reference point connection search in consideration of the equipment state that multiple branches to lower from the branch device Procedures for searching for cable routes that cover combinations of cables, procedures for searching for cable routes that cover combinations of each cable core and each terminal in the node of the acquired cable route, and all cores that are candidates for selection When selecting a route with the highest value of the preset evaluation formula as one candidate selection among the line routes, the core route with the highest evaluation value using the preset evaluation formula is used. , The procedure to calculate the evaluation value of each core route, the procedure to display the core route that was the highest evaluation value with reference to the calculation result, among all the core routes that are selection candidates, Procedures for extracting multiple candidates as selection results, when selecting routes in descending order of evaluation values, procedures for displaying all core routes that can be serviced, and selecting one of the routes If all the selection processes are completed, the approved reservation result or route selection result is stored in the system, or the route selection result is canceled, or multiple times including multiple core selection and wavelength multiplexing. When the selection process is repeated, the procedure for selecting between two points in the communication station is executed by repeating the selection of the necessary core segment again while retaining the result output obtained in the above processing procedure. Program for selecting a communication medium. A connection status search processing program executed by a path search processing unit in the communication medium selection device,
In the process of extracting the inside selection reference point to the computer of the route search processing unit by the connection search process by the direct acquisition service, one of the selection conditions is the outermost terminal and the starting point of the innermost terminal. Procedure for obtaining end point information, procedure for obtaining information on the inside terminal that is the end point of the start point / end point information, procedure for checking the connection status of the acquired inside terminal, connection status of the inside terminal is not yet If it is a connection, the corresponding terminal is identified as the inside selection reference point, and the procedure for obtaining the terminal is acquired. Procedure for extracting information on the connection destination outside the terminal and connector, and checking the connection status of the equipment outside the terminal again, and continuing the search until it finally becomes unconnected, applicable Select the inner terminal Identifying a quasi point, the procedure for acquiring the said terminal, communication media selected program instructs respectively. A program for search processing of a connection status executed by a path search processing unit in the communication medium selection device,
In the process of extracting the inside selection reference point by the connection search process by the multi-branch service to the computer of the path search processing unit, a procedure for acquiring the start point / end point information of the outermost terminal and the innermost terminal, Among the start / end points information, the procedure to acquire the information of the inside terminal that is the end point, the procedure to check the connection status of the acquired inside terminal, and the connection status of the acquired inside terminal is not connected Identifies the corresponding terminal from the inside selection reference point and acquires the terminal, and if the acquired inside terminal connection status is already connected, the acquired terminal and the outside of the connector If the connection destination terminal type is neither the external terminal that is the start point nor the output terminal of the branch device, using the procedure for extracting the connection destination information and the procedure for confirming the connection destination of the acquired outside equipment Again, outside The procedure to check the connection status of the equipment, and if the outside connection destination terminal type is an outside terminal that is the start point, it indicates that there is no branch device between the inside terminal and the outside terminal, so an error If the terminal type at the outside connection destination is an output terminal of a branch device, use the procedure for checking the type of characteristics including the number of branches of the branch device and the connector reflection characteristics. If it does not meet the service conditions defined in the above, use the procedure to make this an error, and if it matches the service conditions defined in the initial stage, use the procedure to check the vacant terminal status on the output side of the branch device. If there is an unused terminal on the output side of the branch device that conforms to the service conditions defined in the initial stage, the procedure for identifying the corresponding terminal as the inside selection reference point, and if there is no unused terminal on the output side of the branch device This is Ella And procedures, the procedure for acquiring the house side selection reference point in a multi-branch service, communication media selected program instructs respectively. A program for search processing of a connection status executed by a path search processing unit in the communication medium selection device,
In the process of extracting the inside selection reference point by the connection search process by the wavelength division multiplexing service to the computer of the route search processing unit, a procedure for acquiring information on the outermost terminal that is the start point and the innermost terminal that is the end point, Among the start / end point information, the procedure for acquiring the information on the inside terminal, the procedure for checking the connection status of the acquired inside terminal, and if the acquired connection status is not connected, locate the corresponding terminal. The procedure for identifying the inner selection reference point and acquiring the terminal, and the procedure for extracting the information on the connection destination outside the acquired terminal and connector if the acquired connection status has already been connected. Use the procedure for checking the connection destination of equipment, and if the connection destination terminal type is neither the external terminal that is the start point nor the output terminal of the branching device for wavelength multiplexing, check the connection status of the external equipment again. Procedure If the terminal type of the connection destination is an external terminal that is the starting point, a procedure that makes this an error to indicate that there is no wavelength multiplexing branch device between the internal terminal and the external terminal, If the terminal type of the connection destination is an output terminal of a wavelength division multiplexing branch device, use the procedure for checking the characteristic type including the number of branches of the wavelength division multiplexing branch device and the connector reflection characteristics to make an initial definition. If the service condition does not meet the specified service condition, this terminal is used as an error. If the service condition is initially defined, the terminal is further checked using the procedure for checking the vacant terminal status on the output side of the branch device. When the connection search is for the second terminal that is not the first terminal, the procedure is used to check if the same equipment as the planned branch equipment for the first terminal that has already been selected is used, and the same equipment is not used In this If the same device is used, or if the connection search for this terminal is the first terminal, use the procedure for checking the free terminal status on the output side of the branch device to output If there is a vacant terminal on the side, identify the corresponding terminal as the inside selection reference point and acquire the terminal. If there is no vacant terminal on the output side, specify the error, procedure, and wavelength. A program for selecting a communication medium for executing the procedure for acquiring the inside selection reference point in a multiple service. A cable route search processing program executed by a route search processing unit in the communication medium selection device,
The cable route search processing computer acquires the information about the cable rack in which the starting terminal is accommodated and the cable information in the corresponding cable rack, and starts the cable route search processing. A procedure to search for connection points from the end terminal on the inside to the outside corresponding to the unconnected location by conducting a connection search, a procedure to extract the location corresponding to the unconnected terminal as the inside selection reference point, Continuing the procedure for searching for the cable accommodated on the reverse side of the cable rack located inside the acquired cable information, if the existence of the cable is confirmed inside, confirm that it has reached the next cable rack. Confirmation procedure, if the next cable rack is not reached, confirm that there is no route and end the cable route search If it is confirmed that the cable rack has been reached, the cable rack is not the cable rack or the in-house device at the inside selection reference point terminal. In addition, a procedure for confirming whether the cable rack or in-house device is not the in-house selection reference point terminal, or whether the reaching cable rack is the in-house selection reference point terminal cable rack or in-house device, and the reaching cable rack is in the inside. If it is not the cable rack of the selection reference point terminal or the in-house device, the procedure for searching for the cable stored in the cable rack again, the cable rack where the reaching cable rack has no cable at the top and is not the selection reference point terminal inside Or if it is an in-house device, it reaches the next cable rack. If there is no route, the procedure to confirm the absence of the route and end the cable route search, and the procedure to determine the cable route if the reaching cable rack is a cable rack or in-house device at the in-house selection reference point terminal, A program for selecting communication media to be executed. A core route search processing program executed by a route search processing unit in a communication medium selection device,
For each cable route extracted in the cable route search process, the route search processing unit computer starts the search process from the start terminal, toward the end terminal, the end terminal side is the cable or adapter terminal inside Procedure for searching for connected and unconnected cable cores or adapter terminals, and when searching, whether the core route can be acquired as a route, or whether the core route cannot be acquired as a route, or the searched adapter Procedure for confirming whether the terminal has become the terminal terminal. As a result, if the core wire route can be acquired as the route, the terminal terminal is further connected to the terminal terminal on the upper side toward the terminal terminal on the upper side. Procedure for searching for connected and unconnected cable cores or adapter terminals on the side, if a core route cannot be obtained as a route Is the procedure to make the core route uncertain because it is impossible to acquire the core route, and if the searched adapter terminal is a terminal terminal, to the initially set service in the acquired core route If there is no suitability as a result of the check to confirm whether the compatibility of the WDM and the first terminal and the second terminal of the wavelength multiplexing selection use the corresponding port of the same branch device at the same time, A program for selecting a communication medium for executing a procedure for making the core route uncertain because it is impossible to obtain the core route, and a procedure for confirming the obtained core route when there is suitability. . An evaluation value calculation processing program executed by the optimum path calculation processing unit in the communication medium selection device,
A procedure for obtaining a determined number of core route groups by assigning them to the computer of the optimum route calculation processing unit by a core route search process, a procedure for obtaining the number of connection points of the obtained core route, and obtaining The procedure for obtaining the number of unconnected locations in the core route, where the reciprocal value of the number of connected locations in the core route is A and the reciprocal value of the number of unconnected locations in the core route is B, Similar to the procedure for calculating A and B using the acquired number of connected points and the number of unconnected locations, using the initially set count values and using the A and B values acquired above, A procedure for obtaining evaluation values by multiplying A and B by weighting factor values and adding them, and among the numbers assigned in the obtained core route, the relationship is such that the maximum number n> j with respect to the obtained route number j. If so, the j + 1th core If the relationship of n = j holds, the procedure for calculating the evaluation value for each core route and the procedure for storing the calculation result are respectively executed. Communication medium selection program.   15. A computer-readable recording medium in which the communication medium selection program according to claim 8 is recorded.

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