KR20220021289A - System and method for automatically calculating the investment cost of transport network - Google Patents

Abstract

Disclosed are a system for automatically calculating an investment cost of a transmission network for automatically calculating an investment amount and an investment cost of multiple types of multi-layered transmission network according to demand information, and a method thereof. The system for automatically calculating an investment cost of a transmission network comprises: a collecting unit to collect shape information and topology information of respective transmitters configuring the transmission network; a shape standardizing unit to standardize the shape information based on shape feature information by types; a topology simplifying unit to simplify a topology between the transmitters as a topology of a local unit based on the topology information; a line capacity analyzing unit for calculating a line use capacity by types of transmission networks using the standardized shape information to calculate usable capacity by types of transmission networks based on the topology of a local unit and the line use capacity; a route search unit to search a shortest local route for connecting an upper local and a lower local of a demand line by types of transmission networks based on the simplified topology of the local unit; an investment amount calculator to calculate an investment amount of the shortest local route by types of transmission networks based on usable capacity of types of transmission networks and a required capacity of the demand line; an optimal network selector for calculating investment costs by types of transmission networks using investment costs and investment amounts of types of transmission networks to select an optimal network based on the calculated investment costs; and a final investment cost calculator to calculate a final investment cost using an investment amount of the selected optimal network.

Description

A system and method for automatically calculating the investment cost of transport network

The present invention relates to a system and method for automatically calculating investment cost for a transmission network, and more particularly, to a system and method for automatically calculating investment cost for a multi-type multi-layer transmission network.

The transport network consists of various types of transport networks, such as a Reconfigurable Optical Add Drop Multiplexer (ROADM) network, a Multi-Service Provisioning Platform (MSPP) network, a Packet Transport Network (PTN) network, and a Packet Optical Transport Network (POTN) network. The shape of the transmission device constituting the transmission network is different for each manufacturer and for each model, the capacity of the unit, the port capacity, etc. are different, and these capacities are variably configured. In addition, depending on the technology applied to the transmission device, it is not possible to determine the trunk capacity and the like with the simple physical topology of each transmission network. Accordingly, in the prior art, the transmission network operator selects the type of transmission network to accommodate the demand line before investment, then conducts due diligence on the transmission network for several months to select available units and ports. and it takes a lot of time In addition, it takes more time to calculate the quantity considering even the case of multi-layered structure.

The present invention has been proposed to solve the above problems, and it is an object of the present invention to provide a system and method for automatically calculating investment cost of a transmission network for automatically calculating the investment amount and investment cost of a multi-type multi-layer transmission network according to demand information. there is.

According to an embodiment, a system for automatically calculating investment cost of a transmission network includes: a collection unit configured to collect shape information and topology information of each transmission device constituting the transmission network; a shape standardization unit for standardizing the shape information based on the shape characteristic information for each model; a topology simplification unit that simplifies a topology between transmission devices into a topology of a local unit based on the topology information; a line capacity analyzer for calculating line usage capacity for each type of transmission network using the standardized shape information, and calculating available capacity for each type of transmission network based on the topology of the local unit and the line usage capacity; a path search unit for searching a shortest local path for connecting an upper station and a lower station of a demand line for each type of transmission network based on the simplified topology of the local unit; an investment quantity calculation unit for calculating an investment quantity for a shortest local path for each type of transmission network based on the available capacity for each type of transmission network and the required capacity of the demand line; an optimal network selection unit for calculating an investment cost for each type of transmission network using the investment unit price for each type of transmission network and the amount of investment for each type of transmission network, and selecting an optimum network based thereon; and a final investment cost calculator for calculating a final investment cost by using the investment amount of the selected optimal network.

The circuit capacity analysis unit determines the total capacity of unused ports of the UNI (User Network Interface) unit of each transmission device for each type of transmission network as the available capacity for the UNI unit part, and calculates the sum of the available capacities of the trunks of the local transmission devices. It can be determined by the available capacity of the local hepatic trunk.

The circuit capacity analyzer, for a Reconfigurable Optical Add Drop Multiplexer (ROADM) network, calculates the usable capacity of the trunk for each transmission device, determines the number of usable wavelengths as the available capacity, and uses wavelength information for each connection section of the transmission devices. Based on , it is possible to calculate the number of usable wavelengths for each connection section.

The line capacity analyzer may calculate the usable capacity in consideration of only the used capacity of the working port in calculating the usable capacity of the trunk between the stations for the transmission network constituting the automatic protection switching line.

The line capacity analyzer may calculate the usable capacity for each level, based on the total usable capacity for each level, for a transmission network accommodating lines of different levels.

The circuit capacity analyzer may calculate the usable capacity by excluding the reserve capacity in calculating the usable capacity of the inter-local trunk for each type of transmission network.

The investment quantity calculation unit calculates the number of investment ports of the UNI unit and the number of investment ports of the NNI (Network Node Interface) unit in the connection section between stations for each type of transmission network, and the optimal network selection unit calculates the investment unit price per port And, it is possible to calculate the investment cost for each type of transmission network by multiplying the investment unit price per port by the number of investment ports.

The investment quantity calculation unit may calculate the number of investment ports of the UNI unit and the NNI unit by selecting the idle ports of the UNI unit and the NNI unit for each type of transmission network, and considering reusable ports among them.

The investment quantity calculation unit may select some of the idle ports as reuse ports in consideration of the reserve ratio and distributed acceptance.

The investment quantity calculating unit stores the number of wavelengths required when calculating the number of investment ports of the UNI unit of the transmission device of the ROADM network, and for a connection section between transmission devices of the ROADM network, the number of required wavelengths and the transmission device Whether to invest in the common shelf can be determined by using the number of supported wavelengths and the number of wavelengths in use of the common shelf.

The optimal network selector may calculate an investment unit cost per wavelength for a connection section between transmission devices of the ROADM network, and calculate the investment cost by multiplying the investment unit cost per wavelength by the number of required wavelengths.

The optimal network selector may determine a value obtained by dividing a unit price of a UNI unit and an NNI unit by the number of ports configured in the UNI unit and the NNI unit as the unit price per port.

The final investment cost calculator may calculate the number of investment units based on the number of investment ports and calculate the final investment cost by multiplying the unit price of the investment unit by the number of units.

The final investment cost calculator may calculate the number of NNI units to invest in consideration of the automatic protection switching configuration in calculating the number of NNI units to be invested.

A method of calculating an investment cost of a transmission network in an automatic investment cost calculation system according to an embodiment includes: collecting shape information and topology information of each transmission device constituting the transmission network; standardizing the shape information based on the shape characteristic information for each model; simplifying a topology between transmission devices into a topology of a local unit based on the topology information; calculating line usage capacity for each type of transmission network using the standardized shape information, and calculating available capacity for each type of transmission network based on the topology of the local unit and the line usage capacity; searching for a shortest local path for connecting an upper station and a lower station of a demand line for each type of transmission network based on the simplified topology of the local unit; calculating an investment amount for a shortest local path for each type of transmission network based on the available capacity for each type of transmission network and the required capacity of the demand line; calculating an investment cost for each type of transmission network by using the investment unit cost for each type of transmission network and the amount of investment for each type of transmission network, and selecting an optimal network based on this; and calculating a final investment cost by using the investment amount of the selected optimal network.

According to the present invention, even if each transmission device constituting the transmission network has different shape characteristics, it is possible to automatically calculate the investment amount of the entire path for the demand line by providing the idle resource selection criteria according to the same rule.

In the present invention, the investment amount of the network of the layer related to the investment amount of the lower layer is also integrally calculated for the complex network composed of several types or the transmission network composed of multiple layers, and the investment amount of the multi-layer transmission network is accurately calculated collectively Therefore, the calculation of investment costs, which previously took several months, can be performed in just 'p minutes.

Conventionally, one type of transmission network is arbitrarily determined to calculate the investment cost, but the present invention can compare and analyze the investment cost for each type of transmission network at the same time to select an optimal transmission network and calculate the investment cost.

1 is a diagram showing the configuration of a system for automatically calculating investment cost of a transmission network according to an embodiment of the present invention.
2 is a diagram illustrating physical shape information of a transmission device according to an embodiment of the present invention.
3 is a diagram illustrating a topology according to an embodiment of the present invention.
4 is a diagram illustrating a topology according to another embodiment of the present invention.
5 is a flowchart illustrating a method of constructing basic information of the entire transmission network in the system for automatically calculating the investment cost of the transmission network according to an embodiment of the present invention.
6 is a flowchart illustrating a method of calculating an investment cost in a system for automatically calculating an investment cost of a transmission network according to an embodiment of the present invention.

The above-described objects, features and advantages will become more apparent through the following detailed description in relation to the accompanying drawings, and accordingly, those of ordinary skill in the art to which the present invention pertains can easily implement the technical idea of the present invention. There will be. In addition, in the description of the present invention, if it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram showing the configuration of a system for automatically calculating investment cost of a transmission network according to an embodiment of the present invention. The system of this embodiment may include a memory, a memory controller, one or more processors (CPU), a peripheral interface, an input/output (I/O) subsystem, a display device, an input device, and a communication circuit. The memory may include high-speed random access memory, and may also include one or more magnetic disk storage devices, non-volatile memories such as flash memory devices, or other non-volatile semiconductor memory devices. Access to memory by other components, such as processors and peripheral interfaces, may be controlled by the memory controller. The memory may store various types of information and program instructions, and the program is executed by the processor. Peripheral interfaces connect I/O peripherals to the processor and memory. One or more processors execute various software programs and/or sets of instructions stored in memory to perform various functions for the system and process data. The I/O subsystem provides an interface between input/output peripherals such as display devices and input devices and the peripheral interface. The communication circuit performs communication through an external port or communication by an RF signal. The communication circuitry converts electrical signals to RF signals and vice versa through which the RF signals can communicate with communication networks, other mobile gateway devices, and communication devices. As shown in FIG. 1 , the system of this embodiment includes a storage unit 100 , a collection unit 110 , a shape standardization unit 120 , a topology simplification unit 130 , a line capacity analysis unit 140 , and a demand register unit. 150 , a path search unit 160 , an investment amount calculation unit 170 , an optimal network selection unit 180 , and a final investment cost calculation unit 190 , and these components are implemented as a program and stored in a memory, It may be executed and operated by at least one processor, or may be implemented and operated as a combination of software and hardware.

The collection unit 110 collects shape information and topology information of each transmission device constituting the entire transmission network included in the communication network. The transport network includes a Reconfigurable Optical Add Drop Multiplexer (ROADM) network, a Multi-Service Provisioning Platform (MSPP) network, a Packet Transport Network (PTN) network, and a Packet Optical Transport Network (POTN) network. The collection unit 110 collects shape information and topology information of each transmission device by accessing each transmission device constituting each transmission network or by accessing at least one element management system (EMS) that manages multiple transmission devices.

The shape information of the transmission device includes model, version, management IP address, slot information (slot name, whether or not the unit is mounted, mounted unit name), unit information (unit name, unit capacity, mounted slot name, service status ( use, idle, etc.)), port information (port name, port unit information, port capacity information, service status (used, idle, etc.), whether or not a port alarm occurs, etc.).

The topology information of the transmission device includes Working/Protection configuration information of the unit, 1+1 Multiplex Section Protection (MSP) configuration information of the port, information of other transmission devices connected to the transmission device, and line information configured in the transmission device. do. The Working/Protection configuration information is information on whether a backup path is set for protection of currently working paths. For example, in the case of MSPP transmission devices constituting a ring network, when a failure occurs in a currently operating path (eg, working port), it may be configured to transmit and receive data through a backup path (eg, protection port) in the opposite direction. . 1+1 MSP protects the straight line connection between transmitting devices and uses one path while using another path when a failure occurs. In the case of the line information, for example, for the ROADM transmission device, since Wavelength Division Multiplexing (WDM) technology is used, as the line information connected between the UNI (User Network Interface) port connected to the customer and the upper station, the actual line is Collect the wavelength information used to construct. For the MSPP transmission device, the cross connect information configured in the device is collected. For the PTN transmission device, tunnel information of MSLS-TP technology and Pseudowire information for loading Carrier Ethernet service are collected.

Figure 2 is a view showing the physical shape information of the transmission device according to an embodiment of the present invention, the transmission device is also a structure in which several shelves (shelf) 200 is mounted in one rack, or one shelf ( 200) is also one transmission device. In addition, the shelf 200 includes a Main Control Unit (MCU), a User Network Interface (UNI) unit (a unit connected to a customer-side terminal or a unit connected to another type of transmission device), a Network Node Interface (NNI) unit (upper Alternatively, it is composed of a plurality of slots 210 in which various types of units 220 such as a unit connected to a lower transmission device of the same type) and a switching unit are mounted. Therefore, it is necessary to standardize the physical shape of the transmission device. And, when designing investment, it is necessary to identify the slots in which the UNI unit and the NNI unit of the transmission device can be mounted, and to identify the idle slot among them, and also to identify the idle port among the ports of the UNI unit and the NNI unit. However, the information of the slot in which the UNI unit and the NNI unit can be mounted is different for each type of transmission device. In addition, the capacity of each port of each unit by model is fixed or variable, and when it is variable, the total capacity of the unit cannot be exceeded. characteristics must be identified. Therefore, it is necessary to standardize the shape information of each transmission device, which is different for each model and for each unit.

In order to standardize the shape information, it is necessary to refer to the shape characteristic information for each type of transmission device. The storage unit 100 stores shape characteristic information for each type of transmission device. The shape characteristic information for each model includes the mountable slot number of the UNI unit/NNI unit for each model, and the characteristic information for each unit of each model (eg, the number of physical ports, whether there is a fixed/variable capacity, the capacity for each port, and the unit in case of variable capacity) total capacity of each level), total capacity by hierarchy (for example, the total capacity of each SDH (Synchronous Digital Hierarchy), PTN (Packet Transport Network), OTN (Optical Transport Network) of transmission devices of POTN network), transmission device standard It includes the shape (eg, rack type/shelt type, the number of shelves that can be mounted per rack, the number of slots that can be mounted per shelf, etc.). The shape standardization unit 120 standardizes the shape information of each transmission device collected by the collection unit 110 with reference to shape characteristic information for each model stored in the storage unit 100 .

Examples of shape characteristic information for each model are as follows [Table 1] to [Table 3]. [Table 1] is the shape characteristic information of Huawei ROADM as shape characteristic information for each model, [Table 2] is the shape characteristic information for each unit, and [Table 3] is the mapping information of the unit type.

manufacturing company emphysema type Number of Selfs per Rack Number of slots per self Huawei ROADM RACK 4 12

manufacturing company emphysema unit type port capacity Number of ports per capacity variable or not total unit capacity mountable slot Huawei ROADM LOA 1G,
2.5G,
10G 10,
4,
One Y 10G 01~8, 11~18

manufacturing company emphysema unit type EMS mounting unit Huawei ROADM LOA 12LOA, 15LOA, 18LOA

If the slot names of Huawei ROADM equipment in [Table 1] to [Table 3] are standardized, they can be standardized as shown in [Table 4]. That is, as shown in [Table 4], when "/rack=1/shelf=0/sub_shelf=1" is collected as shape information of the slot name, it is standardized as the slot number "01".

manufacturing company emphysema slot name slot number Huawei ROADM /rack=1/shelf=0/sub_shelf=1 01

The topology simplification unit 130 simplifies the topology (ie, connection) between transmission devices into a topology (ie, connection) between stations by using the topology information collected by the collection unit 110 . In the case of the MSPP network and the PTN network, there are many transmission devices, and one to several tens of transmission devices are installed in one station. To calculate the trunk (ie, physical link) usage capacity based on topology information between all these transmission devices, complexity increases. Therefore, the topology of transmission devices within a station is integrated and simplified to a topology between stations. In the example of Fig. 2, the trunk (physical link) between each transmission device of station A and station B is integrated into one trunk (physical link) between station A and station B.

However, the topology simplification unit 130 manages the ROADM transmission device for each individual device. ROADM for long-distance transmission uses WSS (Wavelenth Selective Switches) to form a multi-degree network topology. For ROADM transmission devices, when calculating usable capacity when designing investment, it is impossible to overlap wavelengths for each degree, so usable capacity must be calculated according to the use of wavelengths. Also, when ROADM networks are separated in the same station, the topology simplification unit 130 forms a topology by adding virtual link information between the separated ROADM networks in the station. 3 is a diagram illustrating a topology according to an embodiment of the present invention. The ROADM network composed of A-B-C-D and the RODAM network composed of E-F-G-H are not connected to each other. That is, the D transmission device and the F transmission device are not connected by NNI. However, since the D transmission device and the F transmission device are located in the same local area, the UNI of the D transmission device and the UNI of the F transmission device are connected, defined as an Add/Drop section, and managed as a virtual link. By managing this section as a virtual link, it can be utilized when designing future investment paths.

In addition, the topology simplification unit 130 builds a ring network using the topology information collected by the collection unit 110 . In the topology information collected by the collection unit 110, only connection information between each transmission device exists. In calculating the usable capacity of the trunk between transmission devices, the method of calculating the usable capacity may vary depending on whether or not the circular network of each transmission network is established. Therefore, the circular network must be constructed using the topology information. 4 is a diagram showing a topology according to another embodiment of the present invention. As shown in FIG. 3, the annular network may not overlap each other, and as shown in FIG. 4, the annular network may be configured to overlap each other. .

The line capacity analysis unit 140 calculates the line usage capacity for each network type, and then calculates the available capacity for each network type based on the topology between the stations simplified and built by the topology simplification unit 130 and the line usage capacity. . That is, line usage capacity and usable capacity are calculated for each of the ROADM network, the MSPP network, the PTN network, and the POTN network. At this time, the line used capacity and available capacity are calculated for each of the UNI unit portion and the NNI unit portion.

First, for the UNI unit part, the line capacity analysis unit 140 grasps the usage status and capacity of each port of each local UNI unit for each network type based on the standardized shape information of each transmission device, Calculate the used and usable capacity of each port. That is, the port in the in-use state determines that all of the total capacity of the port is in use, and determines that there is no available capacity. On the other hand, in the unused ports, the sum of the total capacities of the ports is determined as the available capacity.

Next, for the NNI unit part, when calculating the line usage capacity between stations, the line capacity analysis unit 140 sums the usage capacity of trunks (that is, physical links) between each transmission device to determine the size of one trunk between stations. Set the capacity to be used. In the example of FIG. 2 , the capacity used between the transmission device a and the transmission device a’ is 10G, the capacity used between the transmission device b and the transmission device b’ is 10G, and the capacity used between the transmission device c and the transmission device c’ is 5G. The used capacity of one trunk between station B and station B is set to 25G. However, in the case of the ROADM network, as described above, the used capacity and the usable capacity are calculated for each transmission device. Hereinafter, for each type of network, a method of calculating the used capacity and the usable capacity of the trunk will be described in detail.

In the case of the ROADM network, the line capacity analyzer 140 determines the usable capacity of the trunk by the number of usable wavelengths for each model and each degree. In this case, since the same wavelength cannot be used for lines with overlapping connection sections in the ROADM network, the usable capacity of the trunk is determined by managing the wavelength information used for each connection section of each directly connected transmission device. For example, in the topology of FIG. 3 , when there is one line using one wavelength (eg, wavelength 1) in the AB connection section and a new line is configured in the ABC connection section, in the AB connection section Since wavelength 1 is already used, only wavelengths other than wavelength 1 (eg, wavelength 2) can be used. However, since the A-D connection section is not related to the A-B connection section, wavelength 1 can be used in the corresponding A-D connection section. As described above, the number of available wavelengths for each connection section varies according to the used wavelength of the line already configured in the ROADM network and which path is configured for the line. Accordingly, the line capacity analysis unit 140 uses wavelengths 1 and 2 for the AB direct connection section for the ROADM network, uses wavelength 2 for the BC direct connection section, and uses wavelength 1 for the AD direct connection section. The usable capacity of the trunk is determined by managing the wavelength information used for each connection section of each directly connected transmission device, such as

In the case of the MSPP network, the line capacity analyzer 140 may calculate the used capacity and the usable capacity of the trunk in the inter-local connection section as the sum of the line capacities configured in the NNI for each transmission device. However, if the MSPP network consists of 1+1 MSP (Multiplex Section Protection) configuration or SNCP (Subnetwork Connection Protection), etc., the protection section is ignored and the total capacity, used capacity, and usable capacity are only the working section. to calculate For example, assuming that the 10G working port and 10G protection port are configured with 1+1 MSP, the total capacity is calculated only at 10G, and the used capacity is calculated as the sum of the lines configured in the working port. If the used capacity is 2G, the usable capacity can be calculated as 8G.

In the case of a PTN network, the lines set in the transmission device are hierarchically configured by applying MPLS-TP and Carrier Ethernet technologies. A tunnel composed of Working LSP (Label Switched Path) and Protection LSP to provide multiple 1+1 type protection to the PTN physical link is loaded, and a Pseudowire line is configured to load service lines on it. Accordingly, in the case of the PTN network, the line capacity analysis unit 140 analyzes the upper physical link, that is, the trunk section, through which each line set in the PTN transmission device actually passes, and determines the used capacity and available capacity of the trunk between each directly connected transmission device. Calculate and sum these to calculate the used and usable capacity of the local hepatic trunk. For example, if there is a topology composed of ABCD, the used capacity of the line established between ABCs is 1G, and the used capacity of the line established between BCDs is 1G, the used capacity of the AB connection section is 1G, the use of the BC connection section is 1G The capacity is calculated as 2G, and the used capacity in the CD connection section is calculated as 1G, and the value obtained by subtracting the used capacity from the total capacity for each connection section is calculated as the usable capacity of each connection section.

The transmission device of the POTN network is composed of several hierarchies and can carry a synchronous digital hierarchy (SDH), a packet transport network (PTN), and an optical transport network (OTN) circuit in a complex manner. In particular, SDH and OTN lines are composed of 1+1, 1+0, or ASON (Automatically Switched Optical Network) that performs rerouting when a failure occurs. As described above, since various types of lines are set in the transmission device of the POTN network, the line capacity analysis unit 140 calculates the used capacity and the usable capacity of the inter-local trunk in the manner of the MSPP network and the PTN network described above for the POTN network. do. However, since the total capacity available for each level is different for each model, the line capacity analysis unit 140 refers to the shape characteristic information for each model stored in the storage unit 100 based on the total capacity available for each level. , calculate the used and usable capacity of the trunk for each hierarchy. For example, the signal of each level in the POTN transmission device is multiplexed and transmitted to another transmission device. At this time, assuming that the total trunk capacity between the transmission devices is 100G, the total capacity available at the SDH level in the transmission device is 40G, and the actual Assuming that the used capacity is 20G, the used capacity of the trunk for the SDH line is 20G, and the usable capacity is not 80G, but 40G minus 20G is calculated as 20G. For other hierarchies such as PTN hierarchies and OTN hierarchies in the POTN transmission device, the used capacity and usable capacity of the trunk are calculated for each hierarchical level in the same manner.

In an embodiment, in calculating the available capacity of inter-local trunks for each network type, the line capacity analyzer 140 may calculate the available capacity by excluding the spare capacity for each network type. For example, if the total capacity of the section B-C is 30G, the used capacity is 5G, and the reserve ratio of the section is 20%, the usable capacity is 19G (30G - 5G - 30*0.2).

The demand registration unit 150 receives demand information, which is an investment cost calculation target. The demand includes the customer's line demand, the line demand for IP network construction/relocation, and the demand for calculating the trunk shortage section. Here, the line demand for IP network establishment/replacement is the transmission network demand when a new IP network (eg, router, etc.) connected to the transmission network is newly built or redeployed. The demand for calculating the trunk shortage section is a demand for calculating all sections in which trunk capacity is used more than a specific usage rate. The demand information includes upper station, lower station, number of lines, line capacity (1G, 2.5G, 10G, etc.), line configuration method (1+1, 1+0), and the like. In the case of the demand for calculating the trunk shortage section, only the information of the upper station and the lower station can be input, and without the need to find the shortest local path below, the trunk shortage period can be directly calculated from the investment quantity calculation unit 170 described below. Calculate.

The demand registration unit 150 may determine whether to accommodate the corresponding demand in the transmission network based on the input demand information. Specifically, the demand register 150 calculates the distance from the upper station (eg, Yangjae) to the lower station (eg, Busan) of the demand line, and if the distance is less than a specific distance, the demand line is not accommodated in the transmission network. Decided not to, and decided to install optical cables. In other words, it is determined that the investment cost is not calculated for the demand line determined by the optical cable installation because the demand line can be established by connecting it to the optical cable installation without accommodating it in the transmission network between the stations that are close to each other.

The path search unit 160 searches for a shortest local path for connecting an upper station and a lower station for each network type for a demand line from the simplified topology information by using the demand information. For example, when the capacity of the demand line is 1G, the line may be configured with the MSPP network, the line may be configured with the PTN network, or the line may be configured with only the ROADM network. Therefore, the shortest local path is searched for each network type. For example, when the upper-level station is Guro and the lower-level station is Busan, there may be several routes, such as a route via Daejeon and a route via Daegu, as a path that can connect the Guro and Busan stations, and among these, the shortest route Search the path.

When searching for the shortest local path, the path search unit 160 searches for only one shortest path for the 1+0 circuit, but in the case of the 1+1 circuit, the shortest local path for each of the working path and the protection path for dualization. , that is, the two shortest local paths can be searched. Also, when searching for a shortest local route by network type, the route search unit 160 is configured to, when there is no transmission device of the corresponding network type in an upper station or a lower station of the demand line, the nearest nearby station (eg, within 40 km) Searches the shortest local path based on .

The investment amount calculation unit 170, for each shortest local path of each type of network searched for the demand line, is configured to connect with the terminal to a transmission device connected to the terminal of the demand line among the transmission devices of the upper station and the lower station. Calculate the number of ports of UNI unit to be additionally invested and the number of ports of NNI unit to be invested for each connection section between stations on the path connecting upper and lower stations. For example, when a route is given to a terminal through a terminal-parent station-transit station-child station-terminal, the number of ports of the UNI unit to be invested to connect the terminal and the parent station, and to connect the lower station and the terminal Calculate the number of ports of UNI unit to be used, the number of ports of NNI unit to invest to connect upper station and transit station, and number of ports of NNI unit to invest to connect transit station and upper station. Hereinafter, a port to be invested is referred to as an investment port. However, for the UNI unit of the ROADM network, the number of investment ports is calculated in the same way as other networks, but for the NNI unit, it is determined whether a common unit shelf is newly established, not the number of ports to be invested. The common part is demonstrated below.

First, in order to calculate the investment port of the UNI unit for connecting the terminal and the upper or lower station, the investment amount calculation unit 170, based on the standardized shape information of each transmission device, the terminal and the phase / Select an idle port of a UNI unit that can connect sub-stations, and check if there is a reusable port among them. If there is no reusable port or when it is not possible to accommodate all the demand lines through the reusable ports, the investment quantity calculating unit 170 may determine the required capacity of the demand line and the reusable capacity analyzed by the line capacity analysis unit 140 . Based on the available capacity of the port, the number of investment ports of the UNI unit between the terminal and the upper/lower station is calculated. When there is no reusable port, the number of investment ports is calculated according to the required capacity of the demand line, and when there is a reusable port, the number of investment ports is calculated according to the available capacity of the reusable port and the required capacity of the demand line do. In this case, the reuse port selection method is different for each network type.

In the case of ROADM network, whether the idle port of the UNI unit of the transmitting device connected to the terminal can be reused is determined according to whether different lines of the same degree can be accommodated for each port of the UNI unit and the degree of the demand line. . For example, if each port of a UNI unit can accommodate only a line of the same degree, a 10G line between Guro and Busan is loaded in the UNI unit, and the line on demand is a line between Guro and Bukdaegu, the UNI unit is idle. The port is not selected as a reuse port, and the number of investment ports for the demand line is calculated. As another example, each port of the UNI unit can accommodate lines of different degrees and if there is an idle port, the idle port is selected as a reuse port for the demand line, and the reuse port is considered to calculate the number of investment ports do. At this time, the investment amount calculation unit 170 calculates and stores the number of necessary wavelengths according to the characteristics of the UNI unit, and then uses it when determining whether or not to establish a common unit shelf. This is because, in the trunk section of the ROADM network, the capacity is determined by the number of wavelengths.

In the case of the MSPP/PTN network, the investment quantity calculation unit 170 may calculate the number of investment ports of the UNI unit, regardless of the degree. That is, the investment quantity calculation unit 170 selects an idle port among the ports of the UNI unit connected between the MSPP/PTN transmission device and the terminal as a reuse port, and accepts the demand line in consideration of the available capacity of the selected reuse port. Calculate the number of investment ports. However, the investment quantity calculation unit 170 selects some of the idle ports as reuse ports in consideration of the reserve ratio and the dispersion acceptance (eg, dispersion ratio). For example, when there is a demand for 10 10G ports between Guro and Busan, there are 5 transmission devices in Guro, 100 ports in total, and 5% reserve, 5 ports in the idle state are for emergency preparedness. Leave it as and do not select it as a reuse port. For distributed accommodation, when device A has 10 idle ports and device B has 2 idle ports, and there is a demand for 10 ports, the demand ports are divided by 5 (eg 50% distribution), and 5 on device A After selecting two idle ports as reuse ports, and selecting two idle ports as reuse ports in device B, the remaining three demand ports are determined as investment ports.

Next, in order to calculate the investment port of the NNI unit for each connection section between the upper station and the lower station connecting the upper station and the lower station, the investment amount calculating unit 170, for each network type, each connection section on the path (ie, trunk) Calculate the required capacity for each section and compare the calculated required capacity for each section with the available capacity of the trunk for each section analyzed by the line capacity analyzer 140. In the section where the available capacity is less than the required capacity, it is determined that investment is necessary and calculate the number of investment ports. If there is a plurality of demand, the investment quantity calculating unit 170 must calculate the required capacity of each connection section by adding up the required capacity of each of the plurality of demand for each connection section on the route. For example, if demand 1 requires 1G capacity and is an ABCD route, and demand 2 requires 1G capacity and is a BCDF route, the required capacity of sections AB and DF is 1G, but the required capacity of sections BC and CD is 2G becomes

The investment amount calculation unit 170 determines the idle port of the NNI unit of the transmission device for the connection section requiring investment, and calculates the number of investment ports in consideration of the capacity of the idle port. In one embodiment, in the case of the MSPP/PTN network (POTN network), a port that is not connected to another transmission device and is in an inactive (Deact) state is determined as an idle port. In addition, it is necessary to calculate the number of investment ports in consideration of dualization. In the case of the MSPP/PTN network, the NNI of the transmission device can be configured as 1+1 MSP or as a circular network to ensure network survivability, so the number of investment ports should be calculated according to the network configuration status. For example, when configuring 1+1 MSP, considering both the working port and the protection port, two ports are calculated as investment ports. In order to calculate more accurately, in the case of an annular network, it is necessary to additionally calculate the number of locales composed of the annular network × 2. However, since the toroidal network configuration can be different, it can be calculated only about 4 times. This will depend on your investment policy.

On the other hand, since the transmission device of the ROADM network is not an equipment to be invested in per port unit of the NNI unit, but must be invested in the unit of the common unit self, the investment amount calculation unit 170, for the connection section between the transmission devices of the ROADM network, Based on the number of supported wavelengths of the common unit shelf of each transmission device, the number of wavelengths currently in use of the common unit shelf, and the number of investment ports of the UNI unit, stored in advance while calculating the number of high required wavelengths, Decide whether to invest in wealth self. For example, if the common shelf supports 80 wavelengths, and 75 wavelengths are currently being used, and the required number of wavelengths is 9, the usable capacity of the common shelf is 5 wavelengths, so 4 wavelengths can be used. I can't, and I decide that the investment of the common self is necessary. Here, the common shelf is a shelf for long-distance transmission in which units commonly used in the ROADM transmission device are mounted, and is a component integrally including an amplifier, an attenuator, a MUX, a DEMUX, and the like. And, since the number of wavelengths to be loaded on the newly established common part shelf is four, the final required wavelength becomes four.

In the above embodiment, the shortest local route is searched for each network type for the demand line, and for each network type, an investment port for connecting a terminal and an upper or lower station, and a section on a path connecting an upper station and a lower station Calculate the investment port. In configuring the demand line, one network type may constitute the demand line, but several types of networks may be connected to form the demand line. For example, the MSPP network may be connected to the SDN unit of the POTN or, if the demand line is long-distance, connected to the ROADM network to configure the demand line.

Therefore, in calculating the investment port for each section on the path connecting the upper station and the lower station, there is an upper layer connection relationship in each connection section or the distance between the transmission devices is a specific distance (eg, 40 km) or more, so a long distance such as ROADM When it is necessary to connect a transmission device, etc., it is necessary to determine the number of investment ports and whether or not to establish a common cellt for these linked devices. For example, if you need to invest 1 port in NNI unit of MSPP, you need to make sure that there is an idle port in SDH unit of POTN or idle port in UNI of ROADM to connect that investment port, If there is no or only idle ports are insufficient, the number of investment ports must be calculated.

To this end, the investment quantity calculating unit 170 inputs a new demand for the connected devices to the demand registration unit 150 when connecting devices that do not belong to the corresponding network type in the connection section for each network type. Thus, the number of investment ports is also calculated for the devices. At this time, for each network type, the section directly connected to the linkage device is the number of investment ports of the linkage device in a manner that calculates the investment port for connecting the above-described terminal and the upper or lower station, and the connection section between the linkage devices For each section, the number of investment ports or whether to establish a common section shelf is determined in a manner that calculates investment ports and common section shelves for each section on the path connecting the above-described upper station and lower station.

The investment amount calculation unit 170, for each network type, in additionally registering the demand for the linked devices, if the linked device and the transmitting device are not in the same station, the station with the transmitting device and the linked device By comparing the distances of nearby stations, the nearest nearby station can be selected as a parent or a lower station can

The optimal network selection unit 180 calculates an investment unit price for each type of network, and calculates the total investment cost for each type of network using the number of investment ports or the number of required wavelengths calculated by the investment quantity calculation unit 170 . Calculate and select the network type with the lowest investment cost as the optimal network for the demand circuit. Here, the calculation of the unit cost of investment is calculated as simplified as possible. That is, in order to expand the investment port, it is necessary to expand the investment port unit, not the investment port unit, but when selecting the optimal network, the investment unit price is calculated by the port unit, not the unit unit. Also, the investment unit cost is calculated in units of wavelengths for the common shelf.

More specifically, the investment unit price per port is calculated by dividing it into a UNI unit and an NNI unit. As described above, the UNI unit is a unit for connecting the terminal and the upper or lower station, and the NNI unit is a unit connecting the transmission devices of the upper station and the lower station. The unit cost of investment for a UNI unit is the value obtained by dividing the unit price of the UNI unit by the number of ports configured in the UNI unit. For example, if the price of one UNI unit is 100,000 won and there are two ports configured in the UNI unit, the investment terminal per port is 50,000 won (100,000 won ÷ 2). The investment unit price for the NNI unit is a value obtained by dividing the unit price of the NNI unit by the number of ports configured in the NNI unit, and then dividing the value by the ratio of the actual investment capacity to the port capacity. For example, if the price of one NNI unit is 200,000 won, there are two ports configured in the NNI unit, the capacity of each port is 10G, and the actual investment capacity is 1G, the unit investment price per port is 10,000 won ((20 10,000 won ÷ 2) ÷ 1/10). The investment unit price in units of wavelengths is calculated for the ROADM transmission device, and is a value obtained by dividing the unit price of the common unit shelf by the number of wavelengths supported by the common unit shelf when the establishment of the common unit shelf is decided.

The optimal network selection unit 180 calculates the investment unit price per port of the UNI unit, the investment unit cost per port of the NNI unit, and the investment unit price in wavelength units for each network type, as in the above-described example, and then the actual investment The total investment cost for each network type is calculated by multiplying and summing the number of investment ports or required wavelengths, and the network type with the lowest total investment cost is selected as the optimal network for the demand line. For example, if the number of investment ports is 4 and the investment unit price per port is 50,000 won, 200,000 won is the total investment cost. Alternatively, if the investment unit price of a wavelength is 200,000 won, and the number of required wavelengths is 10, the total investment cost is 2 million won.

The final investment cost calculator 190 calculates a final investment cost for the optimal network selected by the optimal network selector 180 . In this case, the final investment cost calculation unit 190 calculates the final investment cost differently according to the type of the finally selected optimal network. MSPP, PTN, and POTN calculate the number of investment ports as the number of units again, and calculate the final investment cost by multiplying the number of units by the price of the unit. For example, if the investment port is 10, and the number of ports per unit is 8, 2 units are needed for 10 investment ports. Therefore, the price per unit is multiplied by 2 to calculate the final investment cost. In this case, when calculating the number of NNI units, the number of units is calculated in consideration of dualization. That is, the unit for the working port and the unit for the protection port can be separately calculated. In the case of the ROADM network, the investment cost is calculated for the UNI unit in the same way as other types of networks, and for the NNI unit part, as described above, the investment cost is calculated using the required number of common unit shelves. That is, it is calculated by multiplying the required number of common shelves by the price of the common shelves.

The final investment cost calculation unit 190, when calculating the final investment cost, if there is a unit that must be invested together when investing in the optimal network, the unit is also considered when calculating the final investment cost. For example, there is a separate unit that provides the corresponding function when calculating the final investment cost for a 1+1 line. Therefore, this unit is also included in the final investment cost calculation. In addition, the final investment cost calculation unit 190, after calculating the number of units to be invested, checks whether there is an empty slot in which an investment unit can be installed in the local area, and if there is no, calculates by self-expansion or new construction, The cost is also included in the final investment cost.

5 is a flowchart illustrating a method of constructing basic information of the entire transmission network in the system for automatically calculating the investment cost of the transmission network according to an embodiment of the present invention.

Referring to FIG. 5 , in step S501, the system collects shape information and topology information of each transmission device constituting the entire transmission network included in the communication network. The system collects shape information and topology information of each transmission device by accessing each transmission device constituting each transmission network or by accessing at least one Element Management System (EMS) that manages multiple transmission devices. The shape information and topology information of the transmission device are the same as described above.

In step S502 , the system standardizes the collected shape information of each transmission device with reference to shape characteristic information for each model stored in the storage unit 100 . And in step S503, the system simplifies the topology between transmission devices (ie, connection) into a topology between stations (ie, connection) using the collected topology information. However, the system manages the ROADM transmission device for each individual device. This is because, for a ROADM transmission device for long-distance transmission, the usable capacity must be calculated according to the use of wavelengths for each degree when calculating the usable capacity during investment design. In this case, when ROADM networks are separated in the same station, the system forms a topology by adding virtual link information between the separated ROADM networks in the station. In addition, the system builds a ring network using the collected topology information.

In step S504, the system calculates the line usage capacity for each network type based on the standardized shape information of each transmission device, and then calculates the usable capacity for each network type based on the simplified and constructed local topology and the line usage capacity. Calculate. That is, line usage capacity and usable capacity are calculated for each of the ROADM network, the MSPP network, the PTN network, and the POTN network. At this time, the line used capacity and available capacity are calculated for each of the UNI unit portion and the NNI unit portion. In an embodiment, in calculating the available capacity of the inter-local trunk for each network type, the system may calculate the available capacity by excluding the spare capacity for each network type.

First, for the UNI unit part, the system determines the usage status and capacity of each port of each local UNI unit for each network type, based on the standardized shape information of each transmission device, and determines the usage capacity of each port and Calculate usable capacity. That is, the port in the in-use state determines that all of the total capacity of the port is in use, and determines that there is no available capacity. On the other hand, in the unused ports, the sum of the total capacities of the ports is determined as the available capacity.

Next, for the NNI unit part, in calculating the line usage capacity between stations, the system sums the usage capacity of trunks (that is, physical links) between each transmission device and sets it as the usage capacity of one trunk between stations. However, in the case of the ROADM network, as described above, the used capacity and the usable capacity are calculated for each transmission device. Hereinafter, for each type of network, a method of calculating the used capacity and the usable capacity of the trunk will be described in detail.

In case of ROADM network, the system determines the usable capacity of the trunk by the number of usable wavelengths for each type and each degree. In this case, since the same wavelength cannot be used for lines with overlapping connection sections in the ROADM network, the usable capacity of the trunk is determined by managing the wavelength information used for each connection section of each directly connected transmission device.

In the case of the MSPP network, the system can calculate the used capacity and the usable capacity of the trunk in the inter-local connection section by the sum of the line capacities configured in the NNI for each transmission device. However, if the MSPP network consists of 1+1 MSP configuration or circular network protection switching such as SNCP, the protection section is ignored and the total capacity, used capacity, and usable capacity are calculated only with the working section. For example, assuming that the 10G working port and 10G protection port are configured with 1+1 MSP, the total capacity is calculated only at 10G, and the used capacity is calculated as the sum of the lines configured in the working port. If the used capacity is 2G, the usable capacity can be calculated as 8G.

In the case of a PTN network, the system analyzes the upper physical link, that is, the trunk section through which each line set in the PTN transmission device actually passes, calculates the used capacity and the usable capacity of the trunk between each directly connected transmission device, and adds them to the trunk section between stations. Calculate used and usable capacity. The system calculates the used capacity and the usable capacity of the inter-local trunk in the manner of the MSPP network and the PTN network described above for the POTN network. However, since the total capacity available for each hierarchy is different for each model, the system refers to the shape characteristic information for each model stored in the storage unit 100 and based on the total usable capacity for each hierarchy, Calculate used and usable capacity.

6 is a flowchart illustrating a method of calculating an investment cost in a system for automatically calculating an investment cost of a transmission network according to an embodiment of the present invention.

Referring to FIG. 6 , in step S601, the system receives demand information, which is an investment cost calculation target. The demand includes the customer's line demand and the line demand for IP network construction/relocation. Here, the line demand for IP network establishment/replacement is the transmission network demand when a new IP network (eg, router, etc.) connected to the transmission network is newly built or redeployed. The demand information includes upper station, lower station, number of lines, line capacity (1G, 2.5G, 10G, etc.), line configuration method (1+1, 1+0), and the like.

In step S602, the system determines whether to accommodate the demand in the transmission network based on the input demand information. Specifically, the system calculates the distance from the upper station (eg, Yangjae) to the lower station (eg, Busan) of the demand line and, if the distance is less than a certain distance, determines that the demand line is not accommodated in the transmission network, and , decided by installing optical cables. In other words, it is determined that the investment cost is not calculated for the demand line determined by the optical cable installation because the demand line can be established by connecting it to the optical cable installation without accommodating it in the transmission network between the stations that are close to each other.

In step S603, the system searches the simplified topology information for a shortest local path for connecting the upper station and the lower station for each network type for the demand line by using the demand information. For example, when the upper-level station is Guro and the lower-level station is Busan, there may be several routes, such as a route via Daejeon and a route via Daegu, as a path that can connect the Guro and Busan stations, and among these, the shortest route Search the path. When searching for the shortest local path, only one shortest path is searched for the 1+0 circuit, but in the case of the 1+1 circuit, the shortest local path, i.e., two shortest local paths, is used for each of the working path and the protection path for dualization. You can search. Also, when searching for the shortest local route by network type, if there is no transmission device of the corresponding network type in the upper or lower station of the demand line, the shortest local route is searched based on the nearest nearby station (eg, within 40 km) do.

In step S604, for each shortest local path of each network type searched for the demand line, the system additionally invests in a transmission device connected to the terminal of the demand line among the transmission devices of the upper station and the lower station for connection with the terminal Calculate the number of UNI unit ports to be used. Hereinafter, a port to be invested in is referred to as an investment port.

First, in order to calculate the investment port of the UNI unit for connecting the terminal and the upper or lower station, the system can connect the terminal and the upper/lower station for each network type based on the standardized shape information of each transmission device. Select an idle port of the UNI unit and check if there is a reusable port among them. If there is no reusable port or when all demand lines cannot be accommodated with the reusable ports, the system, based on the required capacity of the demand line and the available capacity of the reusable port analyzed in step S404 of FIG. 5, the terminal Calculate the number of investment ports of the UNI unit between the and upper/lower stations. When there is no reusable port, the number of investment ports is calculated according to the required capacity of the demand line, and when there is a reusable port, the number of investment ports is calculated according to the available capacity of the reusable port and the required capacity of the demand line do. In this case, the reuse port selection method is different for each network type.

In the case of ROADM network, whether the idle port of the UNI unit of the transmitting device connected to the terminal can be reused is determined according to whether different lines of the same degree can be accommodated for each port of the UNI unit and the degree of the demand line. . For example, if each port of a UNI unit can accommodate only a line of the same degree, a 10G line between Guro and Busan is loaded in the UNI unit, and the line on demand is a line between Guro and Bukdaegu, the UNI unit is idle. The port is not selected as a reuse port, and the number of investment ports for the demand line is calculated. As another example, each port of the UNI unit can accommodate lines of different degrees and if there is an idle port, the idle port is selected as a reuse port for the demand line, and the reuse port is considered to calculate the number of investment ports do. At this time, the system calculates and stores the number of necessary wavelengths according to the characteristics of the UNI unit, and then uses it when determining whether to establish a common unit shelf. This is because, in the trunk section of the ROADM network, the capacity is determined by the number of wavelengths.

In the case of the MSPP / PTN network, the system can calculate the number of investment ports of the UNI unit, regardless of the degree. That is, an idle port is selected as a reuse port among the ports of the UNI unit connected between the MSPP/PTN transmission device and the terminal, and the number of investment ports to accommodate the demand line is calculated in consideration of the available capacity of the selected reuse port. However, some of the idle ports are selected as reuse ports in consideration of the reserve ratio and distribution acceptance (eg, distribution ratio).

In step S605, the system determines whether the number of ports of the NNI unit to be invested in each connection section between the stations on the path connecting the upper station and the lower station or whether a common shelf is newly established. Here, whether or not to establish a common part shelf is for the ROADM network, and for the remaining network types, the number of ports of the NNI unit is calculated.

In order to calculate the investment port of the NNI unit for each connection section between the upper station and the lower station, the system calculates the required capacity for each connection section (ie, trunk) on the path for each network type, and the calculated By comparing the required capacity for each section with the available capacity of the trunk for each section analyzed in step S504 of FIG. 5, it is determined that investment is necessary for a section in which the available capacity is less than the required capacity, and the number of investment ports is calculated. If there is a plurality of demand, the system must calculate the required capacity of each connection section by adding up the required capacity of each of the plurality of demand for each connection section on the route.

The system determines the idle port of the NNI unit of the transmission device for the connection section requiring investment, and calculates the number of investment ports in consideration of the capacity of the idle port. In one embodiment, in the case of the MSPP/PTN network (POTN network), a port that is not connected to another transmission device and is in an inactive (Deact) state is determined as an idle port. In addition, it is necessary to calculate the number of investment ports in consideration of dualization. In the case of the MSPP/PTN network, the NNI of the transmission device can be configured as 1+1 MSP or as a circular network to ensure service survivability, so the number of investment ports should be calculated according to the network configuration status. For example, when configuring 1+1 MSP, considering both the working port and the protection port, two ports are calculated as investment ports.

On the other hand, since the transmission device of the ROADM network is not an equipment that is invested in units of ports of the NNI unit, but is invested in units of the common unit shelf, the system uses the common part of each transmission device for the connection section between the transmission devices of the ROADM network. Based on the number of wavelengths that can be supported by the shelf, the number of wavelengths currently in use of the common shelf, and the number of investment ports of the UNI unit, it is stored in advance, and based on the number of high required wavelengths, it is decided whether or not to invest in the common part shelf. decide

In step S605, the system determines whether a long-distance transmission device such as an ROADM should be connected because there is an upper layer connection relationship in each connection section or the distance between transmission devices is greater than or equal to a specific distance (eg, 40 km). If it is necessary to connect a linkage device, the number of investment ports for the linkage device and whether to establish a common cellt must be determined. To this end, the system inputs a new demand for the associated devices, and performs again from step S601. For each network type, in additionally registering the demand for the associated devices, the system calculates the distance between the station with the transmitting device and the nearby station with the linkage if the associated device and the transmitting device are not located in the same station. In comparison, the nearest nearby station may be selected as the upper or lower station, or if another station has an associated device previously connected to the transmitting device, the corresponding station may be selected as the upper or lower station.

In step S606, the system calculates an investment unit price for each network type, and calculates the total investment cost for each network type using the number of investment ports or the number of required wavelengths calculated in steps S604 and S605 to calculate the investment cost This lowest network type is selected as the optimal network for the demand circuit. Here, the calculation of the unit cost of investment is calculated as simplified as possible. That is, in order to expand the investment port, it is necessary to expand the investment port unit, not the investment port unit, but when selecting the optimal network, the investment unit price is calculated by the port unit, not the unit unit. Also, the investment unit cost is calculated in units of wavelengths for the common shelf. For each network type, the system calculates the investment unit price per port of the UNI unit, the investment unit cost per port of the NNI unit, and the investment unit price in wavelength unit, and then multiplies the number of investment ports or required wavelengths to actually invest and sums them up By doing so, the total investment cost is calculated for each network type, and the network type with the lowest total investment cost is selected as the optimal network for the demand circuit.

In step S607, the system calculates the final investment cost for the selected optimal network. In this case, the system calculates the final investment cost differently according to the type of the finally selected optimal network. MSPP, PTN, and POTN calculate the number of investment ports as the number of units again, and calculate the final investment cost by multiplying the number of units by the price of the unit. In this case, when calculating the number of NNI units, the number of units is calculated in consideration of dualization. That is, the unit for the working port and the unit for the protection port can be separately calculated. In the case of the ROADM network, the investment cost is calculated for the UNI unit in the same way as other types of networks, and for the NNI unit part, as described above, the investment cost is calculated using the required number of common unit shelves. That is, it is calculated by multiplying the required number of common shelves by the price of the common shelves.

In one embodiment, when calculating the final investment cost, when there is a unit that must be invested together when investing in the optimal network, the system also considers the corresponding unit when calculating the final investment cost. For example, there is a separate unit that provides the corresponding function when calculating the final investment cost for a 1+1 line. Therefore, this unit is also included in the final investment cost calculation. In addition, after calculating the number of units to be invested, it is checked whether there is an empty slot for installing the investment unit in the relevant area.

While this specification contains many features, such features should not be construed as limiting the scope of the invention or the claims. Also, features described in individual embodiments herein may be implemented in combination in a single embodiment. Conversely, various features described herein in a single embodiment may be implemented in various embodiments individually, or may be implemented in appropriate combination.

Although acts are described in the drawings in a specific order, it should not be understood that the acts are performed in the specific order as shown, or that all of the described acts are performed in a continuous order, or to obtain a desired result. . Multitasking and parallel processing can be advantageous in certain circumstances. In addition, it should be understood that the division of various system components in the above-described embodiments does not require such division in all embodiments. The program components and systems described above may generally be implemented as a package in a single software product or multiple software products.

The method of the present invention as described above may be implemented as a program and stored in a computer-readable form in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.). Since this process can be easily performed by a person skilled in the art to which the present invention pertains, it will not be described in detail any longer.

The present invention described above, for those of ordinary skill in the art to which the present invention pertains, various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It is not limited by the drawings.

100: storage
110: collection unit
120: shape standardization unit
130: topology simplification unit
140: line capacity analysis unit
150 : demand register
160: path search unit
170: investment volume calculation unit
180: optimal network selection unit
190: final investment cost calculation unit

Claims (28)

In the automatic calculation system for investment cost of a transmission network,
a collection unit for collecting shape information and topology information of each transmission device constituting the transmission network;
a shape standardization unit for standardizing the shape information based on the shape characteristic information for each model;
a topology simplification unit that simplifies a topology between transmission devices into a topology of a local unit based on the topology information;
a line capacity analyzer for calculating line usage capacity for each type of transmission network using the standardized shape information, and calculating available capacity for each type of transmission network based on the topology of the local unit and the line usage capacity;
a path search unit for searching a shortest local path for connecting an upper station and a lower station of a demand line for each type of transmission network based on the simplified topology of the local unit;
an investment quantity calculation unit for calculating an investment quantity for a shortest local path for each type of transmission network based on the available capacity for each type of transmission network and the required capacity of the demand line;
an optimal network selection unit for calculating an investment cost for each type of transmission network using the investment unit price for each type of transmission network and the amount of investment for each type of transmission network, and selecting an optimum network based thereon; and
An automatic investment cost calculation system comprising a; a final investment cost calculation unit for calculating a final investment cost by using the investment amount of the selected optimal network. According to claim 1,
The line capacity analysis unit,
For each type of transmission network, the total capacity of unused ports of the UNI (User Network Interface) unit of each transmission device is determined as the usable capacity for the UNI unit part, and the sum of the trunk available capacity of the transmission devices within the station is the usable capacity of the trunk between stations. Investment cost automatic calculation system, characterized in that to determine. 3. The method of claim 2,
The line capacity analysis unit,
For a Reconfigurable Optical Add Drop Multiplexer (ROADM) network, the available capacity of the trunk is calculated for each transmission device, the number of usable wavelengths is determined as the available capacity, and each connection is based on the wavelength information used for each connection section of the transmission devices. Automatic investment cost calculation system, characterized in that calculating the number of usable wavelengths for each section. 3. The method of claim 2,
The line capacity analysis unit,
For the transmission network constituting the automatic protection switching circuit, in calculating the available capacity of the trunk between the stations, the available capacity is calculated by considering only the used capacity of the working port. 3. The method of claim 2,
The line capacity analysis unit,
An automatic investment cost calculation system, characterized in that for a transmission network accommodating lines of different hierarchies, the usable capacity for each level is calculated based on the total usable capacity for each level. 6. The method according to any one of claims 3 to 5,
The line capacity analysis unit,
An automatic investment cost calculation system, characterized in that the usable capacity is calculated by excluding the spare capacity in calculating the usable capacity of the inter-local trunk for each type of transmission network. 3. The method of claim 2,
The investment amount calculation unit,
Calculate the number of investment ports of the UNI unit for each type of transmission network and the number of investment ports of the NNI (Network Node Interface) unit in the connection section between stations,
The optimal network selection unit,
An investment cost automatic calculation system, characterized in that calculating an investment unit price per port, and multiplying the investment unit price per port by the number of investment ports to calculate the investment cost for each type of transmission network. 8. The method of claim 7,
The investment amount calculation unit,
Automatic investment cost calculation system, characterized in that the number of investment ports of the UNI unit and the NNI unit is calculated by selecting the idle ports of the UNI unit and the NNI unit for each type of the transmission network, and considering the reusable ports among them. 9. The method of claim 8,
The investment amount calculation unit,
Automatic investment cost calculation system, characterized in that some of the idle ports are selected as reuse ports in consideration of the reserve ratio and distributed acceptance. 8. The method of claim 7,
The investment amount calculation unit,
When calculating the number of investment ports of the UNI unit of the transmission device of the ROADM network, the number of required wavelengths is stored, and for the connection section between the transmission devices of the ROADM network, the number of required wavelengths and the common unit shelf of the transmission device are stored. ), using the number of supported wavelengths and the number of wavelengths in use, to determine whether to invest in the common unit self. 11. The method of claim 10,
The optimal network selection unit,
An investment cost automatic calculation system, characterized in that for a connection section between transmission devices of the ROADM network, an investment unit cost per wavelength is calculated, and the investment cost is calculated by multiplying the investment unit cost per wavelength by the number of required wavelengths. 11. The method of claim 7 to 10,
The optimal network selection unit,
An automatic investment cost calculation system, characterized in that a value obtained by dividing the unit price of the UNI unit and the NNI unit by the number of ports configured in the UNI unit and the NNI unit is determined as the unit price per port. 13. The method of claim 12,
The final investment cost calculation unit,
Calculating the number of investment units based on the number of investment ports, and multiplying the unit price of the investment unit by the number of units to calculate the final investment cost. 14. The method of claim 13,
The final investment cost calculation unit,
An automatic investment cost calculation system, characterized in that the number of NNI units to be invested is calculated in consideration of the automatic protection switching configuration in calculating the number of NNI units to be invested. A method of calculating the investment cost of a transmission network in an automatic investment cost calculation system, the method comprising:
collecting shape information and topology information of each transmission device constituting the transmission network;
standardizing the shape information based on the shape characteristic information for each model;
simplifying a topology between transmission devices into a topology of a local unit based on the topology information;
calculating line usage capacity for each type of transmission network using the standardized shape information, and calculating available capacity for each type of transmission network based on the topology of the local unit and the line usage capacity;
searching for a shortest local path for connecting an upper station and a lower station of a demand line for each type of transmission network based on the simplified topology of the local unit;
calculating an investment amount for a shortest local path for each type of transmission network based on the available capacity for each type of transmission network and the required capacity of the demand line;
calculating an investment cost for each type of transmission network by using the investment unit cost for each type of transmission network and the amount of investment for each type of transmission network, and selecting an optimal network based on this; and
and calculating a final investment cost by using the investment amount of the selected optimal network. 16. The method of claim 15,
Calculating the usable capacity comprises:
For each type of transmission network, the total capacity of unused ports of the UNI (User Network Interface) unit of each transmission device is determined as the usable capacity for the UNI unit part, and the sum of the trunk available capacity of the transmission devices within the station is the usable capacity of the trunk between stations. A method characterized in that it is determined as 17. The method of claim 16,
Calculating the usable capacity comprises:
For a Reconfigurable Optical Add Drop Multiplexer (ROADM) network, the available capacity of the trunk is calculated for each transmission device, the number of usable wavelengths is determined as the available capacity, and each connection is based on the wavelength information used for each connection section of the transmission devices. A method comprising calculating the number of usable wavelengths for each section. 16. The method of claim 15,
Calculating the usable capacity comprises:
A method, characterized in that for the transmission network constituting the automatic protection switching circuit, the available capacity is calculated by considering only the used capacity of the working port in calculating the available capacity of the trunk between the stations. 16. The method of claim 15,
Calculating the usable capacity comprises:
A method, characterized in that for a transmission network accommodating lines of different hierarchies, the usable capacity for each hierarchy is calculated on the basis of the total usable capacity for each hierarchy. 20. The method according to any one of claims 17 to 19,
Calculating the usable capacity comprises:
A method, characterized in that the available capacity is calculated by excluding the spare capacity in calculating the available capacity of inter-local trunks for each type of transmission network. 17. The method of claim 16,
The step of calculating the investment amount,
Calculate the number of investment ports of the UNI unit for each type of transmission network and the number of investment ports of the NNI (Network Node Interface) unit in the connection section between stations,
The step of selecting the optimal network comprises:
A method of calculating an investment unit cost per port, and multiplying the investment unit price per port by the number of investment ports to calculate an investment cost for each type of transmission network. 22. The method of claim 21,
The step of calculating the investment amount,
A method characterized in that the number of investment ports of the UNI unit and the NNI unit is calculated by selecting the idle ports of the UNI unit and the NNI unit for each type of the transmission network and considering the reusable ports among them. 23. The method of claim 22,
The step of calculating the investment amount,
A method characterized in that some of the idle ports are selected as reuse ports in consideration of the reserve ratio and distributed acceptance. 22. The method of claim 21,
The step of calculating the investment amount,
When calculating the number of investment ports of the UNI unit of the transmission device of the ROADM network, the number of required wavelengths is stored, and for the connection section between the transmission devices of the ROADM network, the number of required wavelengths and the common unit shelf of the transmission device are stored. ) using the number of supported wavelengths and the number of wavelengths in use, to determine whether to invest in the common part self. 25. The method of claim 24,
The step of selecting the optimal network comprises:
Method for calculating an investment cost per wavelength for a connection section between transmission devices of the ROADM network, and calculating the investment cost by multiplying the investment unit price per wavelength by the number of required wavelengths. 25. The method according to claim 21 to 24,
The step of selecting the optimal network comprises:
A method characterized in that a value obtained by dividing the unit price of the UNI unit and the NNI unit by the number of ports configured in the UNI unit and the NNI unit is determined as the unit price per port. 27. The method of claim 26,
The step of calculating the final investment cost is,
Calculating the number of investment units based on the number of investment ports, and multiplying the unit price of the investment unit by the number of units to calculate the final investment cost. 28. The method of claim 27,
The step of calculating the final investment cost is,
A method characterized in that in calculating the number of NNI units to be invested, the number of NNI units to be invested is calculated in consideration of the automatic protection switching configuration.

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