Information processing device, information processing method, and program

Abstract

This information processing device comprises: a storage unit that stores domain definition information for each domain including a condition corresponding to the domain; and a processing unit that, on the basis of the condition in the domain definition information, divides a transmission network having a plurality of transmission devices into a plurality of domains with the plurality of domains allowed to be accommodated in one transmission device.

Description

Information processing device, information processing method, and program

[0001] The present invention relates to the technical field of transmission networks that perform optical wavelength division multiplexing transmission.

[0002] In conventional transmission networks that perform optical wavelength division multiplexing transmission, the transmission network is managed by dividing it into multiple domains, for example, by use such as data centers, by management company, or by region (Non-Patent Document 1).

[0003] Multi-domain orchestration for optical network services; An ONAP blueprint, https: / / networkblog.global.fujitsu.com / 2020 / 06 / 04 / multi-domain-orchestration-for-optical-network-services-an-onap-blueprint / , Internet search, May 22, 2024.

[0004] As the communication capacity that can be accommodated by a transmission device increases in the future, it will become necessary to achieve economy by accommodating multiple domains in a single transmission device. However, conventional technology has not been able to perform processes such as dividing domains and designing transmission paths that assume the accommodation of multiple domains in a single transmission device.

[0005] The present invention has been made in consideration of the above points, and aims to provide a technology for performing processing on a transmission network that assumes that a single transmission device accommodates multiple domains.

[0006] According to the disclosed technology, an information processing device is provided that includes: a memory unit that stores domain definition information for each domain, including conditions applicable to the domain; and a processing unit that divides a transmission network having multiple transmission devices into multiple domains based on the conditions in the domain definition information, allowing multiple domains to be accommodated in one transmission device.

[0007] The disclosed technology provides a technology for performing processing on a transmission network that assumes that a single transmission device accommodates multiple domains.

[0008] 1 is a diagram illustrating a configuration of a transmission system. FIG. 2 is a diagram illustrating domain management information. FIG. 3 is a diagram illustrating an example of topology information. FIG. 4 is a diagram illustrating an example of a configuration of a controller 100. FIG. 5 is a diagram illustrating an example of a configuration of the controller 100. FIG. 6 is a flowchart illustrating the operation of a domain management unit 140. FIG. 7 is a diagram illustrating an example of topology information after domain division. FIG. 8 is a flowchart illustrating the operation of a transmission path design unit 150. FIG. 9 is a diagram for explaining a specific example of domain selection. FIG. 10 is a diagram illustrating an example of a configuration of the controller 100. FIG. 11 is a diagram illustrating an example of a hardware configuration of an apparatus.

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The embodiment described below is merely an example, and the embodiment to which the present invention is applied is not limited to the following embodiment.

[0010] Below, first, the conventional technology and the problems will be described in more detail, and then the technology according to this embodiment will be described.

[0011] (Regarding the Prior Art) Fig. 1 shows an example of the configuration of a conventional transmission network (transmission system). The transmission network shown in Fig. 1 has domain #1 and domain #2. Fig. 1 also shows a controller 100 that manages the transmission network. Note that the use of the controller 100 is the same in the technology according to the present embodiment, which will be described later.

[0012] As shown in Figure 1, in conventional transmission networks, network management is performed by dividing a domain into transmission devices or transmission sections. Domains are divided, for example, by use such as data centers, or by management operators or regions (Non-Patent Document 1).

[0013] 1 has a configuration in which two optical terminal devices 10 are provided at both ends, and four transmission devices 20 are provided between the two optical terminal devices 10. In addition, in domain #1, transmission paths (optical wavelength paths) are set as shown in the figure.

[0014] The transmission section refers to an optical signal connection between transmission devices 20. The transmission section may also be called a "section." The transmission path is an optical wavelength path set between optical terminal devices 10, and is a communication path that transmits optical signals at a specific frequency within a WDM grid. The transmission devices 20 may be ROADM (Reconfigurable Optical Add Drop Multiplexing) or APN (All-Photonics Network) devices (APN-G / I), etc. The optical terminal devices 10 may be transponders or APN devices (APN-T), etc. The optical terminal devices may also be called terminals.

[0015] (Problems) As the communication capacity that can be accommodated in a transmission section increases in the future, it will be necessary to achieve economy by accommodating multiple domains in one transmission device 20 and one transmission section. However, conventional technology has not been able to perform processes such as dividing domains and designing transmission paths that assume the accommodation of multiple domains in one transmission device 20.

[0016] Furthermore, in order to efficiently use wavelengths between transmission devices 20, it is becoming necessary to open and delete transmission paths on demand in response to fluctuations in communication demand. However, in conventional transmission networks, domains were selected manually when designing transmission paths, so it was not possible to open and delete transmission paths on demand in response to fluctuations in communication demand.

[0017] Hereinafter, a domain management technique for economically utilizing a large-capacity transmission system and a transmission path design technique for automatic domain selection that solves the above problems will be described.

[0018] (System Configuration Example, Operation Overview) The overall configuration of the transmission system of this embodiment is the same as that of Fig. 1, and includes a transmission network and a controller 100 that controls the transmission network. Note that the controller 100 in this embodiment may include functions for performing domain management and transmission path design, but may not include functions for controlling the transmission network. The controller 100 may also be referred to as an information processing device 100.

[0019] The controller 100 in this embodiment holds domain management information and topology information.

[0020] 2A and 2B show examples of domain management information held by the controller 100. In the domain management information, FIG. 2A is referred to as domain definition information, and FIG. 2B is referred to as domain division information.

[0021] As shown in Figure 2(a), the domain definition information includes, for each domain, a domain name that identifies the domain, a priority, attributes of available paths (in the example of Figure 2(a), purpose, available users, etc.), attributes of available optical terminal devices, etc.

[0022] The attribute of an optical terminal is, more specifically, the attribute of the wavelength supported by the optical terminal (e.g., APN-T). In Fig. 2(a), this attribute is represented as type A, etc. This attribute can identify whether the optical terminal suitable for the corresponding domain is an optical terminal that can handle wavelengths in the C band, an optical terminal that can handle wavelengths in the L band, or an optical terminal that can handle both.

[0023] The domains in this embodiment are intended to accommodate cases where, for example, there are restrictions on the wavelengths that can be used as transmission path wavelengths due to the attributes of an optical terminal device, or where the wavelengths and transmission sections that can be used are limited for each operator or purpose.

[0024] The domain division information shown in FIG. 2(b) is information generated by dividing the topology information into domains. The generation process will be described later. The domain division information includes information on the domain to which each pair of section (fiber between transmission devices) and wavelength belongs. For example, the example in FIG. 2(b) indicates that "section A-B (the section between transmission device 20A and transmission device 20B) can use both the wavelength bands λ1 to λ40 and the wavelength bands λ1 to λ80, and the wavelength bands λ1 to λ40 belong to domain #1, and the wavelength bands λ1 to λ80 belong to domain #2."

[0025] In addition, the same section / same wavelength may belong to multiple domains. For example, in the example of Figure 2(b), the wavelength band λ1 to λ80 of section B-C belongs to both domains #2 and #3.

[0026] The priority (domain selection priority) shown in FIG. 2(a) may be determined by an operator based on an operational policy, or may be determined automatically by the controller 100 based on topology information (e.g., the number of devices included in the domain, the maximum distance between transmission devices 20 within the domain).

[0027] An example of topology information is shown in Fig. 3. In the example of Fig. 3, the topology information is information indicating that the transmission devices 20A to 20F are connected as shown. As shown in Fig. 2(b), the transmission devices 20A to 20F may be denoted by symbols such as A and B, respectively.

[0028] When designing a transmission path, the controller 100 automatically determines to which domain the transmission path should belong based on domain management information (path attributes, attributes of optical terminal devices that are path endpoints, etc.). A detailed processing flow will be described later.

[0029] (Device Configuration) Fig. 4 shows an example of the configuration of the controller 100. As shown in Fig. 4, the controller 100 has a fiber information management unit 110, an optical terminal device management unit 120, a topology information management unit 130, a domain management unit 140, and a transmission path design unit 150. The domain management unit 140 and the transmission path design unit 150 may each have a storage unit that stores domain definition information, topology information for each domain after division (domain division information), etc. The storage unit may be located outside the domain management unit 140 and the transmission path design unit 150.

[0030] The fiber information management unit 110 manages fiber information. The fiber information includes fiber attribute values ​​such as fiber length and loss (attenuation). The fiber information management unit 110 acquires and manages the fiber information from, for example, an external design system.

[0031] The optical terminal device management unit 120 stores and manages optical terminal device information. The optical terminal device information includes, for example, the wavelength bands, modes, and quality tolerances supported by the optical terminal device. The optical terminal device management unit 120 acquires the optical terminal device information from, for example, an external design system. The optical terminal device management unit 120 may also communicate with the optical terminal device 10 and acquire the optical terminal device information from the optical terminal device 10.

[0032] The topology information management unit 130 manages topology information such as connections between the transmission devices 20 and connections between the optical terminal devices 10 and the transmission devices 20 .

[0033] The domain management unit 140 defines and manages domain names, the selection priority of the domain, available users, terminal attributes, etc. That is, the domain management unit 140 holds and manages the above-mentioned domain management information (e.g., FIGS. 2A and 2B). The domain management unit 140 can also create domain management information. As mentioned above, the selection priority can be given externally or can be calculated by the controller 100 based on the number of nodes included in the domain, etc. The transmission path design unit 150 performs domain selection, route selection, wavelength selection, transmission quality estimation, etc. That is, the transmission path design unit 150 accepts a request for transmission path design including optical terminal devices at both end points, required quality (bandwidth, etc.), etc., selects a domain that accommodates a transmission path that meets the request, selects a route and wavelength of the transmission path that meets the conditions related to the request, and responds with the results.

[0034] The transmission path design unit 150 may create domain management information (e.g., Figures 2(a) and 2(b)) by itself and perform transmission path design using the domain management information that it created, or may perform transmission path design using the domain management information created by the domain management unit 140.

[0035] 5, the controller 100 may further include a transmission path request receiving unit 160, a transmission path setting unit 170, a transmission path management unit 180, and a transmission device management unit 190 in addition to the configuration of FIG.

[0036] The transmission path request receiving unit 160 is a functional unit that receives a transmission path design request from an external user. The transmission path setting unit 170 is a functional unit that communicates with the optical terminal device 10 and the transmission device 10 according to the route and wavelength of the transmission path designed by the transmission path design unit 150, and sets the transmission path.

[0037] The transmission path management unit 180 is a functional unit that manages information about the set transmission paths. The transmission device management unit 190 is a functional unit that manages information about the amplifier performance, available wavelength bands, frequency grids, etc. of each transmission device 20.

[0038] The processing flow of the domain management unit 140 and the processing flow of the transmission path design unit 150 will be described below. In this embodiment, each of the domain management unit 140 and the transmission path design unit 150 can create domain management information (domain definition information and domain division information). However, this is just an example, and the transmission path design unit 150 may design a transmission path using the domain management information created by the domain management unit 140 without creating domain management information.

[0039] In addition, the transmission path design unit 150 may refer to the domain definition information (e.g., FIG. 2(a)) held in the domain management unit 140, and create topology division information (e.g., FIG. 2(b)) by dividing the topology information in accordance with the domain definition information.

[0040] (Domain Management Unit Processing Flow) The operation of the domain management unit 140 of the controller 100 will be described with reference to the flowchart in Fig. 6. The domain management unit 140 executes the following process after facility information is registered in the controller 100. The facility information is information managed by, for example, the fiber information management unit 110, the optical terminal point device management unit 120, and the topology information management unit 130.

[0041] <S1: Creating Domain Definition Information> In S1 (step 1) of Fig. 6, the domain management unit 140 creates domain definition information consisting of the purpose, available users, terminal attributes, etc. In S1, for example, the domain definition information shown in Fig. 2(a) is created, and the domain management unit 140 holds the domain definition information. However, in this processing flow, the priority of domain selection is determined in S4, which will be described later.

[0042] <S2: Configuring design topology information> In S2, the domain management unit 140 configures design topology information using equipment information (information managed by the fiber information management unit 110, the optical terminal point device management unit 120, the topology information management unit 130, etc.).

[0043] Specifically, the domain management unit 140 acquires the connection relationships between devices from the topology information management unit 140, and then acquires the wavelength bands and the like supported by each fiber (each link) from the fiber information management unit 110. The design topology information configured here is, for example, information such as the wavelength bands supported by each link (each transmission section) added to each link of the topology information shown in Fig. 3.

[0044] <S3: Dividing Topology Information into Domains> In S3, the domain management unit 140 divides the topology information created in S2 (the transmission network indicated by the topology information) into one or more domains according to the domain definition information (e.g., FIG. 2(a)) created in S1. The domain management unit 140 determines the domain to which each combination of a transmission section (connection between transmission devices) and a wavelength available in the transmission section belongs. Note that the same transmission section (same transmission device) / same wavelength may belong to multiple domains. As a result of the division in S3, the domain division information shown in FIG. 2(b) is created and stored. An example of the topology information after domain division is shown in FIG. 7. FIG. 7 corresponds to the domain division information in FIG. 2(b). The domain division information in FIG. 2(b) may be considered to be the same as the topology information after domain division shown in FIG. 7.

[0045] An example of a domain division method is as follows. By the division method below, domain division is performed for each condition (purpose, available users, optical terminal device attributes, etc.) in the domain definition information (e.g., FIG. 2(a)). Then, topology information is divided into domains according to this domain definition information.

[0046] If there are restrictions on available wavelengths due to the attributes of the optical terminals, the domain management unit 140 divides the domains using those attributes. For example, if there are three types of optical terminals, A, B, and C, and optical terminals A and B can only use λ1 to λ40, while optical terminal C can use λ1 to λ80, the domains are divided into a domain that uses only λ1 to λ40 and a domain that uses λ1 to λ80.

[0047] The domain management unit 140 may also divide the domain for securing a transmission section or wavelength that is preferentially used for data center use or for leasing to other businesses as a specific domain.

[0048] <S4: Determining Domain Selection Priority> In S4, the domain management unit 140 determines a domain selection priority for each domain divided in S3. As described above, the domain selection priority may be given externally, or may be calculated by the domain management unit 140 based on the number of transmission devices included in the domain, etc.

[0049] (Transmission Path Design Unit Processing Flow) Next, the operation of the transmission path design unit 150 of the controller 100 will be described with reference to the flowchart of FIG.

[0050] <S11: Request Acceptance> In S11, the transmission path design unit 150 accepts a request for transmission path design. The request includes information on the optical terminal devices 10 that are the endpoints of the transmission path, their attributes, path attributes (usage, type of service provider), required quality (bandwidth, etc.), etc.

[0051] <S12: Configuring design topology information> In S12, the transmission path design unit 150 configures (creates) design topology information by using facility information (information managed by the fiber information management unit 110, the optical termination point device management unit 120, the topology information management unit 130, etc.).

[0052] Specifically, the transmission path design unit 150 acquires the connection relationships between devices from the topology information management unit 140, and then acquires the wavelength bands and the like supported by each fiber (each link) from the fiber information management unit 110. Furthermore, the transmission path design unit 150 acquires the wavelength bands and quality tolerances and the like supported by each optical terminal device 10 from the optical terminal device management unit 120.

[0053] The design topology information configured here is, for example, such that information such as the wavelength band supported by each link in the topology information shown in Figure 3 is added to that link, and also such information as the wavelength band supported by each optical terminal device 10 used, quality tolerance, etc. is added.

[0054] <S13: Divide Topology Information into Domains> The transmission path design unit 150 divides the topology information (the transmission network indicated by the topology information) into one or more domains by using the domain definition information (e.g., FIG. 2A) stored in the domain management unit 140. The domain definition information may be stored in a storage unit in the transmission path design unit 150, or may be stored in any storage unit in the controller 100.

[0055] Specifically, the transmission path design unit 150 acquires domain definition information, which is a condition for domain division, from the domain management unit 140 or the like, and determines the domain to which a combination of a transmission section (connection between transmission devices) and a wavelength available in the transmission section belongs according to the condition. It also creates topology information (= domain division information) for each domain. Note that one "pair of section (transmission device) and wavelength" may belong to multiple domains. In S13, domain division information (e.g., FIG. 2(b)) is created. The divided domain information corresponding to FIG. 2(b) is as shown in FIG. 7.

[0056] <S14: Domain Selection> In S14, the transmission path design unit 150 selects a domain to be used for the requested transmission path from the one or more domains divided in S14.

[0057] Specifically, the transmission path design unit 150 selects a domain based on the path attributes (usage, service provider type) of the requested transmission path and the attributes of the optical terminal device 10, by referring to domain definition information (e.g., FIG. 2A) stored in the domain management unit 140, etc. If there are multiple domains available for the requested transmission path, the domain may be determined based on the selection priority in the domain definition information, or the operator may manually select one from the candidates.

[0058] 9(a) and 9(b), a specific example of domain selection when the domain division is performed as shown in Fig. 7 will be described. Fig. 9(a) shows the domain definition information, and Fig. 9(b) shows the domain #1 selected as a result.

[0059] In this example, the requested transmission path has communication endpoints of the transmission device 20A and the transmission device 20E. The optical terminal device 10a is connected to the transmission device 20A, and the optical terminal device 10z is connected to the transmission device 20E.

[0060] Here, the domains that can use the transmission device 20A and the transmission device 20E as communication endpoints are domain #1 and domain #2, as shown in Fig. 7. Also, it is assumed that the optical terminal attribute included in the path design request is "type A" and the use is "data center connection."

[0061] In this case, as shown in the domain definition information in Fig. 9A, both domain #1 and domain #2 satisfy the conditions related to the path design request. Therefore, the transmission path design unit 150 selects domain #1 based on the priority in the domain definition information. Fig. 9B shows the selected domain #1.

[0062] <S15: Route and Wavelength Selection> In S15 of the flow in FIG. 8, the transmission path design unit 150 uses topology information corresponding to the selected domain to select a route (path) and wavelength to be used in the requested transmission path.

[0063] More specifically, the transmission path design unit 150 performs route selection using logic such as k-shortest.

[0064] Furthermore, the transmission path design unit 150 identifies available wavelengths using information such as wavelength usage status of each transmission device 20, which is obtained from, for example, a database that manages information about the transmission devices 20 (which may be the transmission device management unit 190 described above), and then selects a wavelength using logic such as first fit. Note that the "technology for selecting a route from multiple candidate links and the technology for selecting a wavelength to be used in each link" itself is an existing technology, and any existing technology may be used in this embodiment.

[0065] <S16: Confirmation of Transmission Quality> In S16, the transmission path design unit 150 confirms the transmission quality of the transmission path. Specifically, the transmission path design unit 150 estimates the quality of the transmission path passing through the route selected in S15, compares the quality estimation result with the quality tolerance of the optical terminal device 10, and confirms whether the transmission path satisfies the quality related to the quality tolerance. Note that any method may be used for quality estimation, and for example, a vendor tool, GNPy, etc. may be used.

[0066] If the transmission path does not satisfy the quality (if the quality becomes worse than the quality tolerance), the transmission path design unit 150 selects, for example, another route, selects a wavelength again, and checks the transmission quality. Here, it is assumed that a transmission path (route and wavelength) that satisfies the quality is obtained.

[0067] <S17: Result Response> In S17, the transmission path design unit 150 responds (outputs) the transmission path design result.

[0068] The transmission path design unit 150 may select multiple candidates in the route / wavelength selection in S15, check whether each of the multiple candidates satisfies the quality conditions in the transmission quality confirmation in S16, and return multiple candidates that satisfy the transmission quality in S17. Also, in S17, the candidate with the best quality among the multiple candidates that satisfy the transmission quality may be returned.

[0069] (Other Configuration Examples) The controller (information processing device) 100 may have the configuration shown in Fig. 10 . The controller (information processing device) 100 includes a storage unit 210 and a processing unit 220. The storage unit 210 may be a storage unit within the domain management unit 140 or the transmission path design unit 150, or may be another storage unit. The processing unit 220 may have the functions of the domain management unit 140 or the transmission path design unit 150.

[0070] For example, the memory unit 210 stores domain definition information for each domain, including conditions applicable to the domain, and the processing unit 220 divides a transmission network having multiple transmission devices into multiple domains based on the conditions in the domain definition information, allowing multiple domains to be accommodated in one transmission device.

[0071] Also, for example, the memory unit 210 stores topology information for each domain obtained by dividing a transmission network having multiple transmission devices into multiple domains by allowing multiple domains to be accommodated in one transmission device, and the processing unit 220 selects a domain from the multiple domains in which to set the requested transmission path based on the topology information for each domain.

[0072] (Hardware Configuration Example) Any of the devices (controller, information processing device) described in this embodiment can be realized, for example, by causing a computer to execute a program. This computer may be a physical computer or a virtual machine on a cloud.

[0073] That is, the device can be realized by executing a program corresponding to the processing performed by the device using hardware resources such as a CPU and memory built into a computer. The program can be recorded on a computer-readable recording medium (such as a portable memory) and stored or distributed. The program can also be provided via a network such as the Internet or email.

[0074] Fig. 11 is a diagram showing an example of the hardware configuration of the computer. The computer in Fig. 11 includes a drive device 1000, an auxiliary storage device 1002, a memory device 1003, a CPU 1004, an interface device 1005, a display device 1006, an input device 1007, an output device 1008, and the like, all of which are interconnected via a bus B. The computer may further include a GPU.

[0075] The program that realizes the processing on the computer is provided by a recording medium 1001, such as a CD-ROM or a memory card. When the recording medium 1001 storing the program is set in the drive device 1000, the program is installed from the recording medium 1001 to the auxiliary storage device 1002 via the drive device 1000. However, the program does not necessarily have to be installed from the recording medium 1001, but may be downloaded from another computer via a network. The auxiliary storage device 1002 stores the installed program as well as necessary files, data, etc.

[0076] The memory device 1003 reads and stores a program from the auxiliary storage device 1002 when an instruction to start the program is received. The CPU 1004 realizes functions related to the device in accordance with the program stored in the memory device 1003. The interface device 1005 is used as an interface for connecting to a network, etc. The display device 1006 displays a GUI (Graphical User Interface) or the like according to the program. The input device 1007 is composed of a keyboard, mouse, buttons, a touch panel, etc., and is used to input various operation instructions. The output device 1008 outputs the results of calculations.

[0077] (Summary, Effects, etc. of the Embodiment) As described above, the technology described in the present embodiment makes it possible to divide one transmission device or one transmission section into multiple domains and manage them, assuming that multiple domains are accommodated in one transmission device. Furthermore, in path design, it is possible to automatically select a domain to use from multiple domains.

[0078] This allows large-capacity transmission systems to be shared among multiple domains, and also makes it possible to design paths on demand in response to fluctuations in demand, allowing transmission systems to be operated economically.

[0079] The following additional notes are provided regarding the above-described embodiments.

[0080] <Additional Notes> (Additional Item 1) An information processing device comprising: a storage unit that stores domain definition information including conditions applicable to each domain; and a processing unit that divides a transmission network having a plurality of transmission devices into a plurality of domains based on the conditions in the domain definition information, allowing a single transmission device to accommodate a plurality of domains. (Additional Item 2) The information processing device according to Additional Item 1, wherein the conditions include an attribute of an optical terminal device, a use of a transmission path, or a user who can use a transmission path. (Additional Item 3) The information processing device according to Additional Item 2, wherein the attribute of the optical terminal device is a wavelength available for use by the optical terminal device, and the processing unit divides the transmission network into a plurality of domains based on the wavelengths available for use by the optical terminal device and the wavelengths supported in each transmission section of the transmission network. (Supplementary Item 4) An information processing device comprising: a storage unit that stores topology information for each domain, obtained by dividing a transmission network having a plurality of transmission devices into a plurality of domains while allowing a single transmission device to accommodate a plurality of domains; and a processing unit that selects from the plurality of domains a domain in which to set a requested transmission path based on the topology information for each domain. (Supplementary Item 5) The information processing device according to Supplementary Item 4, wherein the processing unit selects a domain that matches an attribute of an optical terminal device included in the transmission path request. (Supplementary Item 6) An information processing method executed by an information processing device, wherein the information processing device comprises: a storage unit that stores, for each domain, domain definition information including conditions applicable to the domain; and the information processing method comprises a step of dividing a transmission network having a plurality of transmission devices into a plurality of domains while allowing a single transmission device to accommodate a plurality of domains based on the conditions in the domain definition information. (Supplementary Item 7) An information processing method executed by an information processing device, wherein the information processing device has a memory unit that stores topology information for each domain obtained by dividing a transmission network having multiple transmission devices into multiple domains by allowing multiple domains to be accommodated in one transmission device, and the information processing method includes a step of selecting from the multiple domains a domain in which to set a requested transmission path based on the topology information for each domain.(Supplementary Item 8) A non-transitory storage medium storing a program for causing a computer to function as a processing unit in the information processing device according to any one of Supplementary Items 1 to 5.

[0081] Although the present embodiment has been described above, the present invention is not limited to such a specific embodiment, and various modifications and changes are possible within the scope of the gist of the present invention described in the claims.

[0082] 10 Optical terminal device 20 Transmission device 100 Controller (information processing device) 110 Fiber information management unit 120 Optical terminal device management unit 130 Topology information management unit 140 Domain management unit 150 Transmission path design unit 160 Transmission path request reception unit 170 Transmission path setting unit 180 Transmission path management unit 190 Transmission device management unit 1000 Drive device 1001 Recording medium 1002 Auxiliary storage device 1003 Memory device 1004 CPU 1005 Interface device 1006 Display device 1007 Input device 1008 Output device

Claims

1. An information processing device comprising: a memory unit that stores domain definition information for each domain, including conditions applicable to the domain; and a processing unit that divides a transmission network having multiple transmission devices into multiple domains based on the conditions in the domain definition information, allowing multiple domains to be accommodated in a single transmission device.

2. The information processing device according to claim 1, wherein the conditions include attributes of the optical network unit, a use of the transmission path, or users who can use the transmission path.

3. The information processing device according to claim 2, wherein the attribute of the optical terminal device is the wavelengths available to the optical terminal device, and the processing unit divides the transmission network into multiple domains based on the wavelengths available to the optical terminal device and the wavelengths supported in each transmission section of the transmission network.

4. An information processing device comprising: a memory unit that stores topology information for each domain obtained by dividing a transmission network having multiple transmission devices into multiple domains by allowing multiple domains to be accommodated in one transmission device; and a processing unit that selects from the multiple domains a domain in which to set a requested transmission path based on the topology information for each domain.

5. The information processing device according to claim 4, wherein the processing unit selects a domain that matches the attribute of the optical terminal device included in the transmission path request.

6. An information processing method executed by an information processing device, wherein the information processing device has a memory unit that stores domain definition information for each domain, including conditions applicable to the domain, and the information processing method comprises a step of dividing a transmission network having multiple transmission devices into multiple domains based on the conditions in the domain definition information, allowing multiple domains to be accommodated in one transmission device.

7. An information processing method executed by an information processing device, wherein the information processing device has a memory unit that stores topology information for each domain obtained by dividing a transmission network having multiple transmission devices into multiple domains by allowing multiple domains to be accommodated in one transmission device, and the information processing method includes a step of selecting from the multiple domains a domain in which to set a requested transmission path based on the topology information for each domain.

8. A program for causing a computer to function as a processing unit in an information processing device according to any one of claims 1 to 5.

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