WO2019189681A1 - Communication control device, communication system, communication control method, and program - Google Patents

Communication control device, communication system, communication control method, and program Download PDF

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Publication number
WO2019189681A1
WO2019189681A1 PCT/JP2019/013849 JP2019013849W WO2019189681A1 WO 2019189681 A1 WO2019189681 A1 WO 2019189681A1 JP 2019013849 W JP2019013849 W JP 2019013849W WO 2019189681 A1 WO2019189681 A1 WO 2019189681A1
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Prior art keywords
communication
alarm
information
packet
communication control
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PCT/JP2019/013849
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French (fr)
Japanese (ja)
Inventor
加藤 健一
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日本電気株式会社
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Publication of WO2019189681A1 publication Critical patent/WO2019189681A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/66Arrangements for connecting between networks having differing types of switching systems, e.g. gateways

Definitions

  • the present invention is based on the priority claim of Japanese patent application: Japanese Patent Application No. 2018-068483 (filed on Mar. 30, 2018), the entire description of which is incorporated herein by reference. Shall.
  • the present invention relates to a communication control device, a communication system, a communication control method, and a program.
  • Patent Document 1 describes a technique for assigning an emergency data band to a predetermined data band and using the emergency data band to transfer emergency data with higher priority than normal data.
  • Patent Document 2 describes a technique of a network device that duplicates input data and transmits data via each of two redundant paths. Furthermore, Patent Document 2 describes a technique of a network device that merges received data and transmits the data to another network device.
  • the network device described in Patent Document 2 transmits important communication data (data with relatively high priority) and data with relatively low priority via the same communication path.
  • the data having a relatively high priority may be data relating to public infrastructure.
  • the data with relatively low priority may be data relating to personal use (for example, data relating to moving image browsing).
  • the network device described in Patent Document 2 replicates data regardless of relative priority, and transmits the data to other network devices via two redundant paths.
  • an object of the present invention is to provide a communication control device, a communication system, a communication control method, and a program that contribute to performing necessary communication stably and efficiently according to the situation.
  • a communication control device relays between the first network and the second network.
  • the communication control device includes a communication unit that transmits and receives packets.
  • the communication control device includes an alarm receiving unit that receives an alarm.
  • the communication control device may include a plurality of packets included in the second network, the packet received by the communication unit from the first network, depending on whether the alarm is received and communication priority.
  • the communication control part which transmits via one or two or more communication paths among communication paths is provided.
  • a communication system includes a server device. Furthermore, the communication system includes a communication control device. The communication control device relays between the first network and the second network. The server device controls the communication control device. The server device includes an alarm receiving unit that receives an alarm. Furthermore, the server device includes a server control unit that transmits control information that is information related to packet processing to the communication control device in response to an alarm received by the alarm reception unit. The communication control device includes a communication unit that transmits and receives packets. Further, the communication control device may receive a packet received from the first network by the communication unit according to the control information and a communication priority among a plurality of communication paths included in the second network. A communication control unit that transmits the packet via one or more communication paths;
  • a communication control method performs transmission / reception of a packet, receives an alarm, and receives a packet received from the first network by the communication unit according to presence / absence of the alarm and a communication priority.
  • a program transmits and receives a packet, receives an alarm, and receives a packet received from the first network by the communication unit according to whether or not the alarm is received and a communication priority.
  • a computer that controls the communication control device is caused to execute a process of transmitting via one or more communication paths among a plurality of communication paths included in the network.
  • these programs can be recorded on a computer-readable storage medium.
  • the storage medium may be non-transient such as a semiconductor memory, a hard disk, a magnetic recording medium, an optical recording medium, or the like.
  • the present invention can also be embodied as a computer program product.
  • a communication control device According to each viewpoint, a communication control device, a communication system, a communication control method, and a program that contribute to performing necessary communication stably and efficiently according to the situation are provided.
  • FIG. 2 is a block diagram illustrating an example of an internal configuration of a communication control apparatus 100.
  • FIG. It is a flowchart which shows an example of operation
  • connection lines between the blocks in each block diagram include both bidirectional and unidirectional.
  • the unidirectional arrow schematically shows the main signal (data) flow and does not exclude bidirectionality.
  • an input port and an output port exist at each of an input end and an output end of each connection line, although they are not explicitly shown. The same applies to the input / output interface.
  • a communication control device that contributes to performing necessary communication stably and efficiently is desired depending on the situation.
  • the communication control apparatus 1000 shown in FIG. 1 relays communication between the first network and the second network.
  • the second network may include a plurality of communication paths having different communication qualities.
  • the first network may be a LAN (Local Area Network).
  • the second network may be a WAN (Wide Area Network).
  • the communication control apparatus 1000 includes a communication unit 1001, an alarm receiving unit 1002, and a communication control unit 1003.
  • the communication unit 1001 transmits and receives packets.
  • the communication control apparatus 1000 realizes communication for transmitting / receiving the data by dividing the data into packets and transmitting / receiving the packets.
  • the alarm receiving unit 1002 receives an alarm.
  • the alarm is information for notifying danger such as a disaster (for example, an alarm transmitted from the national instantaneous alarm system).
  • the communication control unit 1003 receives a packet received from the first network by the communication unit 1001 from a plurality of communication paths included in the second network according to the presence / absence of alarm reception and the communication priority. Transmit via one or more communication paths.
  • the communication control unit 1003 determines a communication path so that important data (for example, data related to public infrastructure) is more stably communicated than data related to personal use. May be.
  • the communication control unit 1003 may determine a communication path so that important data and data relating to personal use can be stably communicated together.
  • the communication control apparatus 1000 can change the communication path according to the situation, the communication priority, and the situation, and transfer the packet via the appropriate communication path. As a result, the communication control apparatus 1000 contributes to performing necessary communication stably and efficiently according to the situation.
  • FIG. 2 is a block diagram showing an example of the overall configuration of the communication system 1 according to the present embodiment.
  • the communication system 1 according to the present embodiment includes one or two or more bases (base 200a, base 200b).
  • the base 200a includes a terminal 110a and a communication control device 100a.
  • the base 200b includes a terminal 110b and a communication control device 100b.
  • FIG. 2 shows one terminal and one communication control device at each site for convenience of explanation, but this limits the number of terminals and communication control devices included in each site to one. It is not the purpose.
  • each base may include two or more terminals and two or more communication control devices.
  • the terminals 110a and 110b are referred to as the terminals 110 when it is not necessary to distinguish them.
  • the communication control devices 100a and 100b are referred to as the communication control device 100 when it is not necessary to distinguish them.
  • 2 shows two bases 200a and 200b, this is not intended to limit the communication system 1 according to the present embodiment to including two bases.
  • the communication system 1 according to the present embodiment may include three or more bases.
  • the bases 200a and 200b are referred to as the bases 200 when it is not necessary to distinguish them.
  • Different bases are connected via two or more WANs (first WAN 300 and second WAN 400).
  • different bases are connected via WANs having different communication qualities (first WAN 300 and second WAN 400).
  • the communication quality of the first WAN 300 is higher than the communication quality of the second WAN 400.
  • the communication path of the first WAN 300 may be a communication path that is higher than the communication quality of the second WAN 400 and that guarantees SLA (Service Level Agreement).
  • each base base 200a, 200b
  • the communication control device 100 and the terminal 110 are connected via a LAN.
  • the LAN in each base is also referred to as a first network.
  • the WAN between the bases is also referred to as a second network.
  • the second network includes a plurality of communication paths (first WAN 300 and second WAN 400) having different communication qualities.
  • FIG. 2 shows two types of WANs (first WAN 300 and second WAN 400), but this is not intended to limit the connection between two bases using two types of WANs.
  • the terminal 110 is an information processing apparatus (computer) provided with communication means.
  • the terminal 110 may be a PC (Personal Computer), a smartphone, or the like, and the details thereof are not limited as long as the device includes a communication unit.
  • the terminal 110 may be a device that includes a communication unit and implements IoT (Internet of Things).
  • the communication control device 100 is a device that relays communication between a LAN (first network) and a WAN (second network).
  • the communication control device 100 may be a CPE (Customer Promises Equipment).
  • the terminal 110a in the base 200a transmits a packet addressed to the terminal 110b in the base 200b.
  • the communication control apparatus 100a receives the packet from the terminal 110a, and transfers the received packet to the base 200b side via the WAN.
  • FIG. 3 is a block diagram illustrating an example of the internal configuration of the communication control apparatus 100.
  • the communication control apparatus 100 includes a storage unit 101, a communication unit 102, an alarm reception unit 103, and a communication control unit 104.
  • Each module of the communication control apparatus 100 may be realized by a computer program that causes the communication control apparatus 100 to execute an operation using the hardware of a computer mounted on the communication control apparatus 100.
  • the communication control apparatus 100 includes hardware (CPU (Central Processing Unit), hardware that receives a packet, etc.) and software.
  • the storage unit 101 stores information necessary for operating the communication control apparatus 100.
  • the storage unit 101 is realized by a magnetic disk device, an optical disk device, or a semiconductor memory.
  • the storage unit 101 manages communication priority. Specifically, the storage unit 101 manages (stores) information that associates the content (type) of communication with the priority. For example, the storage unit 101 may store a higher priority in association with communication related to bank transactions (that is, mission critical communication) than communication related to moving image viewing (that is, communication that is not mission critical).
  • the communication unit 102 transmits and receives packets.
  • the communication unit 102 may be realized using a NIC (Network Interface Card).
  • NIC Network Interface Card
  • the communication unit 102 receives a packet addressed to the terminal 110 in another base from the terminal 110 in the first network (LAN). Further, the communication unit 102 receives a packet addressed to the terminal 110 in the first network (LAN) from the terminal 110 in another base via the second network (WAN).
  • NIC Network Interface Card
  • the alarm receiving unit 103 receives an alarm.
  • the alarm is information for notifying danger such as a disaster.
  • the alarm may be an alarm regarding an earthquake, heavy rain, flood, tsunami, storm, or the like. Further, the alarm may be an alarm transmitted by the national instantaneous alarm system.
  • an alarm that satisfies a predetermined condition is called a serious alarm.
  • a serious alarm is information for notifying a danger that requires immediate action such as a tsunami or flood.
  • the alarm receiving unit 103 manages the reception status (reception state) regarding whether or not a serious alarm has been received. Specifically, the alarm receiving unit 103 manages a “reception” state or a “not received” state as a serious alarm reception status. When the alarm receiving unit 103 receives a serious alarm, the alarm receiving unit 103 sets the reception status of the serious alarm to a “reception” state. On the other hand, if the alarm receiving unit 103 has not received a serious alarm, the alarm receiving unit 103 sets the reception status of the serious alarm to a “not received” state.
  • the communication control unit 104 controls the communication path (transfer path) of the packet received by the communication unit 102.
  • the communication control unit 104 determines that one or more of a plurality of communication paths included in the WAN, depending on whether a serious alarm is received and the communication priority. Two or more communication paths are determined as packet transfer destinations. Then, the communication control unit 104 transfers the packet via the determined communication path.
  • the communication control unit 104 duplicates the received packet for communication whose priority exceeds a predetermined threshold. Then, the communication control unit 104 transfers the received packet to two or more communication paths included in the WAN.
  • the predetermined threshold value may be, for example, a numerical value set according to the content (type) of communication or an index indicating high or low.
  • the predetermined threshold is, for example, a numerical value set according to a packet transmission source, a value of a ToS (Type Of Service) field of a packet header, or a value of a CoS (Class of Service) field. good.
  • the communication control unit 104 on the destination side of the transferred packet transfers the received packet to the LAN side when the communication unit 102 receives the packet from the WAN. Then, after transferring the packet received from the WAN to the LAN side, the communication control unit 104 discards the copied packet when receiving the same copied packet from the WAN.
  • “same packet” means that the packet has the same content as the packet received before receiving the packet.
  • the alarm receiving unit 103 of the communication control device 100a receives a serious alarm.
  • the communication control unit 104 of the communication control device 100a duplicates the received packet for communication whose priority exceeds a predetermined threshold. .
  • the communication control unit 104 of the communication control apparatus 100a transfers the same packet to the first WAN 300 and the second WAN 400, respectively.
  • the first WAN 300 and the second WAN 400 have different communication qualities.
  • the communication unit 102 of the communication control apparatus 100b receives the packet transmitted by the communication control apparatus 100a via the first WAN 300. Then, it is assumed that the communication control unit 104 of the communication control device 100b transfers the packet received by the communication unit 102 to the LAN side to which the communication control device 100b belongs. Thereafter, it is assumed that the communication unit 102 of the communication control apparatus 100b receives the same packet (that is, a duplicated packet) as the received packet from the second WAN 400. In that case, the communication control unit 104 of the communication control apparatus 100b discards the copied packet.
  • the alarm receiving unit 103 receives a serious alarm, it is assumed that the communication unit 102 has received a packet from the LAN with respect to communication whose priority is equal to or lower than a predetermined threshold. In that case, the communication control unit 104 determines a communication path having a relatively low communication quality among a plurality of communication paths included in the WAN as a path for transferring the received packet.
  • the communication control unit 104 performs communication with a priority equal to or lower than a predetermined threshold. Discard the packet.
  • the communication control unit 104 duplicates the received packet for communication whose priority exceeds a predetermined threshold. Then, it is assumed that the communication control unit 104 transfers the same packet to the first WAN 300 and the second WAN 400, respectively. Here, the communication control unit 104 transfers the same packet to the first WAN 300 and the second WAN 400, respectively, so that the communication amount of the second WAN 400 can be transmitted in the communication band of the communication path. Suppose that the communication volume is exceeded. In that case, the communication control unit 104 discards communication packets whose priority is less than or equal to a predetermined threshold among packets scheduled to be transmitted to the communication path of the second WAN 400.
  • step S1 the communication control device 100 sets communication priority. Specifically, the communication control apparatus 100 registers (stores) information in which the content (type) of communication is associated with the priority in the storage unit 101.
  • the administrator or the like of the communication control apparatus 100 inputs (registers) the communication content (type) and the priority of the communication to the communication control apparatus 100. Then, the communication control apparatus 100 associates the content (type) of the input communication with the priority of the communication, and stores it in the storage unit 101.
  • step S2 the alarm receiving unit 103 determines whether or not a serious alarm has been received. Specifically, when the reception status of a serious alarm is “reception”, the alarm reception unit 103 determines that a serious alarm has been received. On the other hand, if the reception status of the serious alarm is “not received”, the alarm receiver 103 determines that no serious alarm has been received.
  • step S3 the alarm receiving unit 103 determines whether or not a serious alarm release notification has been received.
  • the alarm receiving unit 103 When the alarm receiving unit 103 receives a notification of canceling a serious alarm (Yes branch in step S3), the alarm receiving unit 103 changes the reception status of the serious alarm to a state of “not received” (step S4). ). After changing the reception status of the serious alarm to the “not received” state, the communication unit 102 determines whether or not a packet has been received from the LAN (step S13).
  • the communication unit 102 determines whether a packet is received from the LAN (step S5).
  • the communication control unit 104 determines whether or not the communication priority exceeds a predetermined threshold (step S6).
  • the communication unit 102 determines whether a packet has been received from the WAN (step S21 shown in FIG. 5). .
  • step S6 the communication control unit 104 determines whether or not the communication priority exceeds a predetermined threshold. Specifically, the communication control unit 104 refers to the storage unit 101 and acquires the priority corresponding to the communication based on the content (type) of the communication corresponding to the received packet. Then, the communication control unit 104 determines whether or not the acquired priority exceeds a predetermined threshold value.
  • the communication control unit 104 duplicates the packet and determines two or more communication paths included in the WAN as the packet transfer destination. (Step S8). For example, when the communication priority exceeds a predetermined threshold, the communication control unit 104 duplicates the packet and determines the first WAN 300 and the second WAN 400 as the transfer path of the same packet.
  • the communication control unit 104 determines a packet transfer path based on the communication priority (step S7). Specifically, when the communication priority is equal to or lower than a predetermined threshold, the communication control unit 104 uses a communication path having a relatively low communication quality (for example, the second WAN 400) as a packet transfer destination. decide.
  • step S9 the communication control unit 104 determines whether or not the amount of communication that can be transmitted in the communication band of the communication path determined as the packet transfer path is exceeded (step S9).
  • the communication control unit 104 determines whether the communication priority is equal to or lower than a predetermined threshold (step S10). ). If the communication priority is equal to or lower than the predetermined threshold (Yes branch in step S10), the communication control unit 104 discards the packet (step S11).
  • the communication control unit 104 duplicates a packet and transfers the same packet to the first WAN 300 and the second WAN 400.
  • the communication amount exceeds the communication amount that can be transmitted in the communication band of the communication path.
  • the communication control unit 104 transmits the packet corresponding to the communication whose communication priority is equal to or lower than a predetermined threshold among the packets having the second WAN 400 as the transfer destination before transferring the packet to the second WAN 400. Discard the packet.
  • the communication control unit 104 transfers the packet through the determined communication path for the packet that has not been discarded. (Step S12). That is, the communication control unit 104 transfers the packet via the determined communication path without discarding the received packet.
  • the communication control unit 104 discards the communication control unit 104.
  • the packet is transferred via the determined communication path (step S12). That is, the communication control unit 104 transfers the packet via the determined communication path without discarding the received packet.
  • the communication unit 102 determines whether or not the received packet is received from the LAN (step S13). .
  • the communication control unit 104 determines a communication path included in the WAN as a packet transfer destination based on the communication priority. (Step S14).
  • the communication control unit 104 determines a communication path (first WAN 300) having a relatively high communication quality as a packet transfer destination for communication whose communication priority exceeds a predetermined threshold.
  • the communication control unit 104 determines a communication path (second WAN 400) having a relatively low communication quality as a packet transfer destination for communication whose communication priority is equal to or lower than a predetermined threshold.
  • step S15 the communication control unit 104 transfers the packet via the determined communication path.
  • the communication unit 102 determines whether a packet has been received from the WAN (step S21 shown in FIG. 5).
  • step S21 the communication unit 102 determines whether a packet is received from the WAN.
  • the communication control unit 104 determines whether the same packet as the received packet has been received (step S22). On the other hand, if no packet is received from the WAN (No branch in step S21), the communication control apparatus 100 returns to step S2 shown in FIG. 4 and continues the processing.
  • step S22 the communication control unit 104 determines whether or not the same packet as the received packet has been received. As described above, the “same packet” is a copy of the packet received before the packet is received. When the same packet as the received packet is received (Yes branch in step S22), the communication control unit 104 discards the received packet (step S23). And the communication control apparatus 100 returns to step S2 shown in FIG. 4, and continues a process. On the other hand, when the same packet as the received packet has not been received (No branch in step S22), the communication control unit 104 transfers the received packet via the LAN. And the communication control apparatus 100 returns to step S2 shown in FIG. 4, and continues a process.
  • the communication control apparatus 100 receives an alarm. And the communication control apparatus 100 which concerns on this embodiment copies a packet regarding communication (for example, mission critical communication) with high priority, when an alarm is received. Then, the communication control apparatus 100 according to the present embodiment determines a plurality of communication paths as packet transfer destinations, and transfers the packets via the determined communication paths. Accordingly, the communication system 1 according to the present embodiment contributes to stably performing necessary communication even when an emergency situation (for example, a disaster or the like) occurs.
  • an emergency situation for example, a disaster or the like
  • the communication control apparatus 100 when the communication control apparatus 100 receives a serious alarm, the communication control apparatus 100 duplicates a packet for communication with a high priority. Then, the communication control apparatus 100 determines a plurality of communication paths as packet transfer destinations, and transfers the packets via the determined communication paths. Therefore, in the communication system 1 according to the present embodiment, even if a failure occurs in a communication path having a relatively high communication quality, the communication between the bases is performed via the communication path having a relatively low communication quality. Communication can be continued. Therefore, the communication system 1 according to the present embodiment contributes to stably performing necessary communication even when an emergency situation (for example, a disaster or the like) occurs and a failure occurs in the communication path.
  • an emergency situation for example, a disaster or the like
  • the communication control device 100 determines a communication path according to the priority of communication when a serious alarm is not received. Therefore, the communication system 1 according to the present embodiment contributes to performing necessary communication stably and efficiently according to the situation.
  • This embodiment is a form in which a server device different from the communication control device receives an alarm and transmits information for controlling the communication path to the communication control device in the area corresponding to the alarm.
  • the description of the same part as the above embodiment is omitted.
  • the same components as those of the above-described embodiment are denoted by the same reference numerals, and the description thereof is omitted.
  • the description of the same operational effects as those of the above-described embodiment is also omitted.
  • FIG. 6 is a block diagram showing an example of the overall configuration of the communication system 1a according to the present embodiment.
  • the difference between the communication system 1 shown in FIG. 2 and the communication system 1a shown in FIG. 6 is that the communication system 1a shown in FIG.
  • FIG. 6 differences between the communication system 1a according to the present embodiment and the communication system 1 illustrated in FIG. 2 will be described in detail.
  • the server device 500 is connected to the communication control device 100 via a network.
  • the server apparatus 500 may be connected to the communication control apparatus 100 via at least one of the first WAN 300 and the second WAN 400.
  • the server device 500 may be connected to at least one communication control device 100 via a network different from the first WAN 300 and the second WAN 400.
  • FIG. 7 is a block diagram illustrating an example of the internal configuration of the server device 500 according to the present embodiment.
  • the server device 500 includes a server storage unit 501, an alarm reception unit 502, and a server control unit 503.
  • Each module of the server device 500 may be realized by a computer program that causes the server device 500 to execute an operation using a hardware of a computer mounted on the server device 500.
  • the server storage unit 501 stores information necessary for operating the server device 500.
  • the server storage unit 501 is realized by a magnetic disk device, an optical disk device, or a semiconductor memory.
  • the server storage unit 501 manages (stores) reference information.
  • the reference information is information used by the server control unit 503 to determine the response to the received alarm when the alarm receiving unit 502 receives a serious alarm.
  • the reference information according to the present embodiment includes area information.
  • Area information is information that identifies an area within a predetermined range.
  • the area information may be an area name (for example, “Tokyo”, “Osaka”, etc.).
  • the area indicated by the area information may be an area in a range including two or more bases 200.
  • the server storage unit 501 stores area information and information specifying one or more communication control devices 100 corresponding to the area information in association with each other.
  • the information specifying the communication control device 100 may be an identification number of the communication control device.
  • the information specifying the communication control device 100 may be an IP (Internet Protocol) address of the communication control device 100.
  • the information specifying the communication control device 100 may be a MAC (Media Access Control) address of the communication control device 100.
  • the information specifying the communication control device 100 is not particularly limited as long as it is information that realizes communication between the server device 500 and the communication control device 100.
  • the server storage unit 501 manages reference information including an area name as area information. In that case, the server storage unit 501 manages (stores) the name of the area and information specifying the communication control device 100 in the base 200 included in the area in association with each other.
  • the alarm receiving unit 502 receives an alarm. As described above, in this document, an alarm that satisfies a predetermined condition is also called a serious alarm.
  • the alarm received by the alarm receiver 502 according to the present embodiment includes alarm target area information.
  • Alarm target area information is information that identifies an area that is targeted by a transmitted alarm. For example, regarding the alarm received by the alarm receiver 502, when the alarm target area information is “Area A”, the alarm is an alarm targeting “Area A”.
  • the alarm receiving unit 502 manages the reception status (reception state) regarding whether or not a serious alarm has been received. Specifically, the alarm receiving unit 502 manages a “received” state or a “not received” state as a serious alarm reception status. When the alarm reception unit 502 receives a serious alarm, the alarm reception unit 502 sets the reception status of the serious alarm to a “reception” state. On the other hand, if the alarm receiving unit 502 has not received a serious alarm, the alarm reception unit 502 sets the reception status of the serious alarm to a state of “not received”.
  • the server control unit 503 refers to the reference information stored in the server storage unit 501 and transmits the control information to the communication control apparatus 100.
  • Control information is information for controlling the communication control device 100.
  • the control information includes correspondence processing information.
  • Corresponding process information is information that instructs the communication control apparatus 100 to execute a process.
  • the correspondence processing information includes at least one of a packet duplication instruction and a communication path change instruction.
  • the server control unit 503 sends the control information to the communication control device 100 arranged at the location corresponding to the area information. Send.
  • the communication control unit 104 manages the reception status (reception state) regarding whether or not control information is received. Specifically, the communication control unit 104 according to the present embodiment manages a “reception” state or a “not received” state as the reception status of the control information. When receiving the control information, the communication control unit 104 according to the present embodiment sets the reception status of the control information to the “reception” state. On the other hand, when the control information is not received, the communication control unit 104 according to the present embodiment sets the reception status of the control information to a “not received” state.
  • FIG. 8 is a flowchart showing an example of the operation of the server device 500 according to the present embodiment.
  • step S101 the alarm receiving unit 502 determines whether or not a serious alarm has been received. Specifically, when the reception status of the serious alarm is “reception”, the alarm reception unit 502 determines that a serious alarm has been received. On the other hand, when the reception status of the serious alarm is “not received”, the alarm reception unit 502 determines that no serious alarm has been received.
  • Step S101 When the alarm receiving unit 502 receives a serious alarm (Yes branch in step S101), the alarm receiving unit 502 determines whether or not a serious alarm release notification is received ( Step S102). On the other hand, if the alarm receiving unit 502 has not received a serious alarm (No branch in step S101), the server device 500 returns to step S101 and continues the process.
  • the server control unit 503 determines whether or not the alarm target area information corresponds to area information registered in the server storage unit 501.
  • the registered area information means area information included in the reference information managed by the server storage unit 501.
  • the server control unit 503 transmits a notification of canceling a serious alarm to the communication control device 100 (step S102). S103).
  • the communication control apparatus 100 receives a serious alarm release notification (step S104).
  • the alarm receiving unit 502 changes the reception status of a serious alarm to a “not received” state (step S105).
  • the server apparatus 500 returns to step S101 and continues a process.
  • the server control unit 503 may transmit a serious alarm release notification with area information to the communication control apparatus 100 to which the server apparatus 500 is connected, or communication of the alarm target area of the released alarm.
  • the control device 100 may be selected to send a notification of cancellation of a serious alarm.
  • the server control unit 503 controls the communication control device 100 in the area corresponding to the alarm target area information. Information is transmitted (step S107). And the said communication control apparatus 100 receives control information (step S108). On the other hand, when the registered area information does not correspond to the alarm target area information (No branch in step S106), the server apparatus 500 returns to step S101 and continues the process.
  • FIG. 9 is a diagram illustrating an example of reference information stored in the server storage unit 501 according to the present embodiment.
  • the server storage unit 501 stores reference information in which area information “area A” is associated with a communication control device “communication control device 100a”.
  • the server storage unit 501 stores the reference information in which the area information “area B” is associated with the communication control device “communication control device 100 b”.
  • the server storage unit 501 stores the reference information in which the area information “area C” and the communication control devices “communication control device 100 c and communication control device 100 d” are associated with each other.
  • the server control unit 503 determines that the alarm target area information (“area A”) corresponds to the reference information registered in the server storage unit 501. Then, the server control unit 503 transmits control information to the communication control device 100a corresponding to “Area A”. Then, the communication control device 100a corresponding to “Area A” receives the control information.
  • control information includes corresponding processing information “packet duplication instruction”
  • packet duplication instruction a processing information “packet duplication instruction”.
  • step S110 the communication control apparatus 100 sets communication priority. Specifically, information that associates the content (type) of communication with the priority is registered (stored) in the storage unit 101.
  • step S111 the communication control unit 104 determines whether control information has been received. Specifically, when the reception status of the control information is “reception”, the communication control unit 104 determines that the control information has been received. On the other hand, when the reception status of the control information is “not received”, the communication control unit 104 determines that the control information has not been received.
  • the communication control apparatus 100 receives the control information (Yes branch in step S111)
  • the communication control unit 104 determines whether or not a serious alarm release notification has been received (step S112).
  • the communication unit 102 determines whether a packet has been received from the LAN (step S114).
  • step S112 when the communication control apparatus 100 receives a notification of cancellation of a serious alarm (Yes branch of step S112), the communication control unit 104 changes the reception status of the control information to a “not received” state (step S112). S113). And the communication part 102 judges whether the packet was received from LAN (step S122).
  • step S114 to step S121 is the same as the processing from step S5 to step S12 shown in FIG.
  • the communication control unit 104 transfers the packet via the determined communication path (step S121)
  • the communication control apparatus 100 returns to step S111 and continues the process.
  • step S111 the communication unit 102 determines whether or not a packet has been received from the LAN (step S122). Since the processing in steps S122 to S124 is the same as the processing in steps S13 to S15 shown in FIG. 4, detailed description thereof is omitted.
  • step S124 the communication control apparatus 100 transfers the packet via the determined communication path (step S124)
  • step S124 the communication control apparatus 100 returns to step S111 and continues the process.
  • FIG. 11 is a diagram illustrating an example of an operation when the communication control apparatus 100 receives a packet from the WAN. Since the processing from step S131 to step S133 shown in FIG. 11 is the same as the processing from step S21 to step S24 shown in FIG. 5, detailed description thereof is omitted.
  • the communication control unit 104 discards the copied packet (step S133)
  • the communication control apparatus 100 returns to step S111 shown in FIG. 10 and continues the process.
  • the communication control unit 104 transfers the received packet via the LAN (step S134)
  • the communication control apparatus 100 returns to step S111 shown in FIG. 10 and continues the process.
  • the server apparatus 500 when the server apparatus 500 receives a serious alarm, the server apparatus 500 transmits control information to the communication control apparatus 100 at a location corresponding to the received alarm.
  • the communication control apparatus 100 performs processing on the received packet and determines a communication path according to the received control information. Accordingly, the communication system 1a according to the present embodiment contributes to performing necessary communication stably and efficiently in an area corresponding to the alarm even when an event corresponding to a serious alarm occurs. To do. Therefore, the communication system 1a according to the present embodiment contributes to performing necessary communication stably and efficiently according to the situation for each area.
  • the server device 500 when the server device 500 receives a serious alarm, the server device 500 sends a packet regarding communication with a high priority to the communication control device 100 in the area corresponding to the alarm. Is instructed to transfer the packet via a plurality of communication paths. Therefore, in the communication system 1a according to the present embodiment, even if a failure occurs in a communication path having a relatively high communication quality, the communication between the sites is performed via the communication path having a relatively low communication quality. Communication can be continued. Therefore, the communication system 1a according to the present embodiment contributes to stably performing necessary communication even when an emergency situation (for example, a disaster or the like) occurs and a failure occurs in the communication path.
  • an emergency situation for example, a disaster or the like
  • a server device different from the communication control device receives an alarm and causes the communication control device to execute a process corresponding to an event corresponding to the alarm.
  • the description of the same part as the above embodiment is omitted.
  • the same components as those of the above-described embodiment are denoted by the same reference numerals, and the description thereof is omitted.
  • the description of the same operational effects as those of the above-described embodiment is also omitted.
  • FIG. 12 is a block diagram illustrating an example of an internal configuration of the server device 500 according to the present embodiment.
  • the server storage unit 501 manages (stores) reference information in which event information is associated with corresponding processing information.
  • Event information is information that identifies the content of an event.
  • the details of the event information are not particularly limited as long as the information can identify the event, such as “earthquake” and “heavy rain”.
  • Corresponding processing information is information related to processing executed for an event.
  • the server storage unit 501 may manage the event information “heavy rain” and the corresponding processing information “packet duplication instruction” in association with each other. Further, the server storage unit 501 may manage the event information “earthquake” and the corresponding processing information “communication path change instruction” in association with each other.
  • the alarm (serious alarm) received by the alarm receiver 502 includes alarm target event information.
  • Alert target event information is information that identifies an event corresponding to an alarm. For example, regarding the alarm received by the alarm receiving unit 502, when the alarm target event information is “heavy rain”, the alarm indicates that heavy rain has occurred.
  • the server control unit 503 transmits control information to the communication control apparatus 100 when the alarm target event information corresponding to the alarm received by the alarm receiving unit 502 corresponds to the event information included in the reference information. To do. Specifically, in the server device 500 according to the present embodiment, when alarm target event information corresponding to a serious alarm received by the alarm receiving unit 502 corresponds to event information included in the reference information, the server device Control information is transmitted to the communication control apparatus 100 to which 500 is connected.
  • the control information includes at least one of a packet duplication instruction and a communication path change instruction.
  • FIG. 13 is a flowchart showing an example of the operation of the server device 500 according to the present embodiment.
  • step S201 the alarm receiving unit 502 determines whether or not a serious alarm has been received. Specifically, when the reception status of the serious alarm is “reception”, the alarm reception unit 502 determines that a serious alarm has been received. On the other hand, when the reception status of the serious alarm is “not received”, the alarm reception unit 502 determines that no serious alarm has been received.
  • step S201 When the alarm receiving unit 502 receives a serious alarm (Yes branch of step S201), the alarm receiving unit 502 determines whether or not a serious alarm release notification has been received (step S202). On the other hand, when the alarm receiving unit 502 has not received a serious alarm (No branch in step S201), the communication control apparatus 100 returns to step S201 and continues the process.
  • step S202 When a serious alarm cancellation notification is received (Yes branch of step S202), the server control unit 503 transmits a critical alarm cancellation notification to the communication control apparatus 100 (step S203).
  • the communication control apparatus 100 receives a serious alarm release notification (step S204).
  • the alarm receiving unit 502 changes the reception status of a serious alarm to a “not received” state (step S205). And the communication control apparatus 100 returns to step S201, and continues a process.
  • the server control unit 503 determines whether or not the registered event information corresponds to the alarm target event information (Ste S206). Specifically, the server control unit 503 determines whether the alarm target event information corresponds to the event information registered in the server storage unit 501.
  • the registered event information means event information included in the reference information managed by the server storage unit 501.
  • step S206 the communication control device 100 returns to step S201 and continues the process.
  • the server control unit 503 includes control processing information corresponding to the alarm target event information. Is generated (step S207). In step S208, the server control unit 503 transmits control information to the communication control apparatus 100 to which the server apparatus 500 is connected. And the said communication control apparatus 100 receives control information (step S209).
  • FIG. 14 is a diagram illustrating an example of reference information stored in the server storage unit 501 according to the present embodiment.
  • the server storage unit 501 stores reference information in which event information “event P” is associated with corresponding processing information “corresponding processing X”. Further, it is assumed that the server storage unit 501 stores the reference information in which the event information “event Q” is associated with the corresponding processing information “corresponding processing Y”. Then, it is assumed that the alarm receiving unit 502 receives a serious alarm indicating the alarm target event information “event P”.
  • the server control unit 503 determines that the alarm target event information (“event P”) corresponds to the reference information registered in the server storage unit 501. Then, the server control unit 503 generates control information including corresponding processing information (“corresponding processing X”) corresponding to the alarm target event information (“event P”).
  • the server control unit 503 transmits control information including corresponding process information (“corresponding process X”) to the communication control apparatus 100.
  • the communication control apparatus 100 receives control information including response processing information (“response processing X”).
  • control information includes the corresponding processing information “packet duplication instruction”
  • the operation of the communication control apparatus 100 according to the present embodiment is as shown in FIG. Detailed description of the operation of the communication control apparatus 100 according to the present embodiment is omitted.
  • the correspondence processing information may be “no correspondence”.
  • the server storage unit 501 stores reference information in which event information “event R” is associated with corresponding processing information “not supported”. Then, it is assumed that the alarm receiving unit 502 receives a serious alarm indicating the alarm target event information “event R”.
  • the server control unit 503 determines that the alarm target event information (“event R”) corresponds to the circumstance information registered in the server storage unit 501. In that case, the server control unit 503 refers to the server storage unit 501, and determines that the corresponding processing information corresponding to the alarm target event information (“event R”) is “no response”. In this case, the server control unit 503 does not generate control information, returns to step 201, and continues processing.
  • the communication control device 100 when the server device 500 receives a serious alarm, the communication control device 100 performs a process to be executed by the communication control device 100 according to an event corresponding to the alarm. Instruct the device 100. Then, the communication control apparatus 100 according to the present embodiment performs processing on the received packet and determines a communication path in response to an instruction from the server apparatus 500. Therefore, the communication system 1a according to the present embodiment contributes to executing an appropriate process according to an event corresponding to a serious alarm. Thereby, the communication system 1a according to the present embodiment contributes to the stable execution of necessary communication by executing appropriate processing even when an event corresponding to a serious alarm occurs. Therefore, the communication system 1a according to the present embodiment further contributes to performing necessary communication stably and efficiently according to the situation.
  • a server device different from the communication control device receives an alarm, and causes the communication control device in an area corresponding to the alarm to execute processing corresponding to the event corresponding to the alarm.
  • the description of the same part as the above embodiment is omitted.
  • the same components as those of the above-described embodiment are denoted by the same reference numerals, and the description thereof is omitted.
  • the description of the same operational effects as those of the above-described embodiment is also omitted.
  • FIG. 15 is a block diagram illustrating an example of an internal configuration of the server device 500 according to the present embodiment.
  • the server storage unit 501 manages reference information in which area information, event information, and correspondence processing information are associated with each other.
  • the alarm (serious alarm) received by the alarm receiver 502 includes alarm target area information and alarm target event information corresponding to the alarm.
  • the alarm target event information corresponds to the event information included in the reference information
  • the alarm target area information corresponds to the area information included in the reference information.
  • the server control unit 503 transmits control information including correspondence processing information to the communication control device arranged at a location corresponding to the area information.
  • FIG. 16 is a flowchart showing an example of the operation of the server device 500 according to the present embodiment.
  • step S301 the alarm receiving unit 502 determines whether or not a serious alarm has been received. Specifically, when the reception status of the serious alarm is “reception”, the alarm reception unit 502 determines that a serious alarm has been received. On the other hand, when the reception status of the serious alarm is “not received”, the alarm reception unit 502 determines that no serious alarm has been received.
  • step S301 If the alarm receiving unit 502 has not received a serious alarm (No branch in step S301), the process returns to step S301 and the process is continued.
  • the alarm receiving unit 502 determines whether or not a serious alarm release notification has been received (step S302).
  • step S302 If a serious alarm release notification is received (Yes in step S302), the server control unit 503 transmits a serious alarm release notification to the communication control device 100 (step S303).
  • the communication control apparatus 100 receives a serious alarm release notification (step S304).
  • the alarm receiving unit 502 changes the reception status of a serious alarm to a “not received” state (step S305).
  • step S305 the server apparatus 500 returns to step S301 and continues a process.
  • the server control unit 503 may transmit a serious alarm release notification with area information to the communication control apparatus 100 to which the server apparatus 500 is connected, or communication of the alarm target area of the released alarm.
  • the control device 100 may be selected to send a notification of cancellation of a serious alarm.
  • step S302 determines whether the registered area information and event information correspond to the alarm target area information and the alarm target event information or not.
  • the server control unit 503 determines whether or not (step S306).
  • the server device 500 returns to step S301 and continues the process.
  • step S306 when the registered area information and event information correspond to the alarm target area information and the alarm target event information (Yes branch in step S306), the server control unit 503 corresponds to the alarm target event information. Then, control information including correspondence processing information is generated (step S307). In step S308, the server control unit 503 transmits control information to the communication control device in the area corresponding to the alarm target area information. And the said communication control apparatus 100 receives control information (step S309).
  • FIG. 17 is a diagram illustrating an example of reference information stored in the server storage unit 501 according to the present embodiment.
  • the server storage unit 501 associates area information “area A”, event information “event P”, response processing information “response processing X”, and communication control device “communication control device 100a”.
  • the server storage unit 501 associates the area information “area B”, the event information “event Q”, the response processing information “response processing Y”, and the communication control device “communication control device 100b”.
  • you manage information Suppose you manage information.
  • the server control unit 503 determines that the alarm target area information “area A” and the alarm target event information “event P” correspond to the reference information registered in the server storage unit 501. Then, the server control unit 503 generates control information including corresponding processing information (“corresponding processing X”) corresponding to the alarm target event information (“event P”). Then, the server control unit 503 transmits control information to the communication control device 100a corresponding to “Area A”. Then, the communication control device 100a corresponding to “Area A” receives the control information.
  • the alarm receiving unit 502 receives a serious alarm indicating the alarm target area information “area A” and the alarm target event information “event Q”.
  • the server control unit 503 determines that the alarm target area information “area A” and the alarm target event information “event Q” do not correspond to the reference information registered in the server storage unit 501. In that case, the server control unit 503 does not generate control information, returns to step S301, and continues the process.
  • the communication control device 100 when the server device 500 receives a serious alarm, the communication control device 100 in the location corresponding to the received alarm responds to the event corresponding to the alarm. , Send control information. Then, the communication control apparatus 100 according to the present embodiment performs processing on the received packet and determines a communication path in response to an instruction from the server apparatus 500. Therefore, the communication system 1a according to the present embodiment contributes to stably performing necessary communication by executing appropriate processing in an area corresponding to the alarm in response to an event corresponding to a serious alarm. . Therefore, the communication system 1a according to the present embodiment further contributes to performing necessary communication stably and efficiently according to the situation of each area.
  • the server device 500 may be disposed in at least one base and connectable to the WAN.
  • the mode in which the area information managed by the server storage unit 501 is the name of the area has been described.
  • the area information may be information (IP address, MAC address, etc.) that identifies the communication control device in the base included in the corresponding area.
  • the server storage unit 501 associates position information for specifying the area with information for specifying the communication control device 100 in the base included in the area. May be managed.
  • the area information managed by the server storage unit 501 may be information specifying two or more bases included in the corresponding area. Further, the area information managed by the server storage unit 501 may be names of two or more bases included in the corresponding area. In that case, the server storage unit 501 associates and manages information specifying the communication control device 100 in the base, the name of each base, and position information specifying each base included in the corresponding area. May be.
  • control information includes the corresponding processing information “packet duplication instruction”
  • the communication control device 100 duplicates the received packet and transfers the packet to a plurality of communication paths with respect to communication having a priority exceeding a predetermined threshold.
  • the form has been described. However, this is not intended to limit the corresponding processing information included in the control information.
  • the correspondence processing information may be a communication path change instruction.
  • the communication control apparatus 100 may change a communication path according to the priority of communication, when the control information containing corresponding
  • a communication path with a relatively high communication quality for example, a communication whose priority exceeds a predetermined threshold
  • a communication path with a relatively low communication quality for example, a communication whose priority exceeds a predetermined threshold
  • the communication control apparatus 100 may change the communication path according to the priority of communication after receiving the control information including the corresponding processing information “communication path change instruction”. For example, after receiving the control information including the correspondence processing information “communication path change instruction”, the communication control apparatus 100 receives a communication path having a relatively low communication quality with respect to communication whose priority exceeds a predetermined threshold. The communication path may be changed so that the transmitted packet is transferred. Further, after receiving the control information including the corresponding processing information “communication path change instruction”, the communication control apparatus 100 receives a communication path having a relatively high communication quality with respect to a communication whose priority is equal to or lower than a predetermined threshold. The communication path may be changed so that the transmitted packet is transferred.
  • the server control unit 503 bypasses the area corresponding to the alarm target area information, and sends the control information to the communication control device 100 in the area. May be sent.
  • the alarm receiving unit 502 receives an alarm including alarm target area information “Tokyo”.
  • the server control unit 503 may generate control information instructing to change the communication path so as to bypass the area “Tokyo” for communication.
  • the server control unit 503 may transmit control information to the communication control device 100 in an area that bypasses the area “Tokyo” (for example, the area “Kanagawa”, the area “Saitama”, etc.).
  • the communication control apparatus 100 has been described with respect to the mode in which the packet transfer path is determined according to the presence / absence of alarm reception and the preset communication priority. However, this does not mean that the communication control apparatus 100 is limited to using a preset communication priority. Of course, the communication control apparatus 100 may appropriately change the communication priority. For example, after the communication control apparatus 100 sets the communication priority, the administrator of the communication control apparatus 100 may change, add, or delete the communication content and the communication priority as appropriate. Of course.
  • the communication control device and the server device may be executed as a network function.
  • the communication control device and the server device may be implemented by a dedicated device, or may be virtually implemented by software that operates on a virtual machine (Virtual Machine (VM)).
  • VM Virtual Machine
  • the storage unit 101 manages information in which the content (type) of communication and the priority are associated with each other.
  • the information possessed by the storage unit 101 is not limited to information associated with the content (type) of communication, and may be information associated with a session.
  • the priority managed by the storage unit 101 is the communication priority.
  • the storage unit 101 may manage information in which the packet content (type) is associated with the priority. For example, if the packet transmission source is a terminal that manages a bank system, it may be stored in association with a high priority as mission-critical information.
  • Mode 1 As in the communication control apparatus according to the first aspect.
  • Mode 2 Preferably, when the alarm receiving unit receives the alarm, the communication control unit according to mode 1 duplicates a packet related to communication whose priority exceeds a threshold value and is included in the second network 2 The copied packet is transmitted via the above communication path.
  • Mode 3 Preferably, the communication control unit according to mode 1 or 2 transmits the first packet received by the communication unit from the second network to the first network, and transmits the first packet. When a packet in which the first packet is duplicated is received from the second network after transmission, the duplicated packet is discarded.
  • the communication control unit Preferably, the communication control unit according to any one of Modes 1 to 3 is configured so that a communication amount of a communication path through which the communication unit transmits a packet received from the first network is a communication band of the communication path. When the amount of communication that can be transmitted by the method exceeds the threshold, the communication packet whose priority is equal to or lower than the threshold is discarded.
  • the server device As in the communication system according to the second aspect.
  • the server device according to mode 5 includes a server storage unit that manages information related to an event and processing information associated with the event. The server control unit transmits the control information to the communication control device according to information related to an event included in the alarm received by the alarm reception unit.
  • the server storage unit manages information related to the event, the processing information, and area information indicating an area in which processing associated with the event is performed.
  • the server control unit transmits the control information to a communication control device arranged at a location corresponding to the area information in accordance with information about the event included in the alarm received by the alarm receiving unit and area information.
  • the control information according to any one of modes 5 to 7 includes at least one of a packet duplication instruction and a communication path change instruction.
  • Mode 9 As in the communication control method according to the third aspect.
  • (Mode 10) As in the program according to the fourth aspect.
  • a server device is provided.
  • the server device includes an alarm receiving unit that receives an alarm. Further, the server device transmits control information, which is information relating to packet processing, to a communication control device that relays between the first network and the second network in response to an alarm received by the alarm receiver.
  • control information which is information relating to packet processing
  • the server device according to mode 11 includes a server storage unit for managing information related to an event and processing information associated with the event.
  • the server control unit transmits the control information to the communication control device according to information related to an event included in the alarm received by the alarm reception unit.
  • the server storage unit according to mode 12 manages information related to the event, the processing information, and area information indicating an area in which processing associated with the event is performed.
  • the server control unit transmits the control information to a communication control device arranged at a location corresponding to the area information in accordance with information about the event included in the alarm received by the alarm receiving unit and area information.
  • the control information according to mode 12 or 13 includes at least one of a packet duplication instruction and a communication path change instruction. Note that the forms shown in the above-described forms 5, 9, and 10 can be developed into the forms shown in forms 2 to 4 in the same manner as the form shown in form 1.
  • Communication system 100 100a, 100b, 1000 Communication control device 110, 110a, 110b Terminal 101 Storage unit 102, 1001 Communication unit 103, 1002 Alarm reception unit 104, 1003 Communication control unit 200, 200a, 200b Base 300 First WAN 400 second WAN 500 Server device 501 Server storage unit 502 Alarm reception unit 503 Server control unit

Abstract

The purpose of the present invention is to perform necessary communication stably and efficiently in accordance with the situation. This communication control device serves as a relay between a first network and a second network. The communication control device comprises: a communication unit which performs transmission and reception of a packet; an alert reception unit which receives an alert; and a communication control unit which, in accordance with whether the alert has been received and communication priority, transmits the packet that the communication unit has received from the first network, via one or more communication routes among a plurality of communication routes included in the second network.

Description

通信制御装置、通信システム、通信制御方法及びプログラムCOMMUNICATION CONTROL DEVICE, COMMUNICATION SYSTEM, COMMUNICATION CONTROL METHOD, AND PROGRAM
 本発明は、日本国特許出願:特願2018-068483号(2018年3月30日出願)の優先権主張に基づくものであり、同出願の全記載内容は引用をもって本書に組み込み記載されているものとする。
 本発明は、通信制御装置、通信システム、通信制御方法及びプログラムに関する。
The present invention is based on the priority claim of Japanese patent application: Japanese Patent Application No. 2018-068483 (filed on Mar. 30, 2018), the entire description of which is incorporated herein by reference. Shall.
The present invention relates to a communication control device, a communication system, a communication control method, and a program.
 災害等が発生した場合、通信経路に障害が発生し、通信断が発生する場合がある。しかし、災害等が発生した場合であっても、安定的に通信を行うことが望ましい。 When a disaster or the like occurs, a failure may occur in the communication path, resulting in communication interruption. However, it is desirable to communicate stably even when a disaster or the like occurs.
 特許文献1においては、緊急データ用帯域を、所定データ帯域の中に割り当て、緊急データ用帯域を利用して、緊急データを、通常データより優先的に転送する技術が記載されている。 Patent Document 1 describes a technique for assigning an emergency data band to a predetermined data band and using the emergency data band to transfer emergency data with higher priority than normal data.
 特許文献2においては、入力されたデータを複製して、冗長化された2つの冗長経路のそれぞれを経由してデータを送信するネットワーク装置の技術が記載されている。さらに、特許文献2においては、受信したデータをマージして他のネットワーク装置にデータを送信するネットワーク装置の技術が記載されている。 Patent Document 2 describes a technique of a network device that duplicates input data and transmits data via each of two redundant paths. Furthermore, Patent Document 2 describes a technique of a network device that merges received data and transmits the data to another network device.
特開2005-277690号公報JP 2005-277690 A 特開2015-231091号公報JP2015-231091A
 なお、上記先行技術文献の開示を、本書に引用をもって繰り込むものとする。以下の分析は、本発明の観点からなされたものである。 It should be noted that the disclosure of the above prior art document is incorporated herein by reference. The following analysis has been made from the viewpoint of the present invention.
 上記の通り、災害等が発生した場合であっても、安定的に通信を行うことが望ましい。特に、災害等が発生した場合であっても、重要なデータ(例えば、公共のインフラストラクチャに関するデータ)に関して、安定的に通信を行うことが望ましい。 As mentioned above, it is desirable to communicate stably even when a disaster occurs. In particular, it is desirable to stably communicate important data (for example, data related to public infrastructure) even when a disaster or the like occurs.
 特許文献1に記載された技術においては、緊急データ用帯域に対応する通信経路において、障害が発生した場合には、安定的に通信を行うことができない可能性がある。 In the technique described in Patent Document 1, there is a possibility that stable communication cannot be performed when a failure occurs in the communication path corresponding to the emergency data band.
 例えば、重要な通信のデータ(相対的に優先度が高いデータ)と、相対的に優先度が低いデータとを、同一の通信経路を経由して、特許文献2に記載のネットワーク装置が送信するとする。例えば、相対的に優先度が高いデータとは、公共のインフラストラクチャに関するデータであってもよい。また、例えば、相対的に優先度が低いデータとは、個人利用に関するデータ(例えば、動画閲覧に関するデータ)であってもよい。特許文献2に記載されたネットワーク装置は、相対的な優先度に関わらず、データを複製して、2つの冗長経路を経由して、該データを他のネットワーク装置に送信する。 For example, when the network device described in Patent Document 2 transmits important communication data (data with relatively high priority) and data with relatively low priority via the same communication path. To do. For example, the data having a relatively high priority may be data relating to public infrastructure. Further, for example, the data with relatively low priority may be data relating to personal use (for example, data relating to moving image browsing). The network device described in Patent Document 2 replicates data regardless of relative priority, and transmits the data to other network devices via two redundant paths.
 そのため、特許文献2に記載された技術においては、相対的に優先度が低いデータの通信量が、重要な通信のデータ(相対的に優先度が高いデータ)の通信量より多い場合、各通信経路において、相対的に優先度が低いデータが、多くの帯域を消費する。その結果、特許文献2に記載された技術においては、各通信経路において、重要な通信のデータ(相対的に優先度が高いデータ)に対する帯域が不足し、重要な通信のデータを、指定された宛先に送信できない可能性がある。 Therefore, in the technique described in Patent Document 2, when the communication amount of data having relatively low priority is larger than the communication amount of important communication data (data having relatively high priority), each communication Data with relatively low priority in the path consumes a lot of bandwidth. As a result, in the technique described in Patent Document 2, the bandwidth for important communication data (data with relatively high priority) is insufficient in each communication path, and important communication data is designated. It may not be possible to send to the destination.
 そこで、本発明は、状況に応じて、必要な通信を安定的且つ効率的に行うことに貢献する通信制御装置、通信システム、通信制御方法及びプログラムを提供することを目的とする。 Therefore, an object of the present invention is to provide a communication control device, a communication system, a communication control method, and a program that contribute to performing necessary communication stably and efficiently according to the situation.
 第1の視点によれば、通信制御装置が提供される。前記通信制御装置は、第1のネットワークと第2のネットワークを中継する。前記通信制御装置は、パケットの送受信を行う通信部を備える。さらに、前記通信制御装置は、警報を受信する警報受信部を備える。さらに、前記通信制御装置は、前記警報の受信の有無と、通信の優先度とに応じて、前記通信部が前記第1のネットワークから受信したパケットを、前記第2のネットワークに含まれる複数の通信経路のうち、1又は2以上の通信経路を経由して送信する通信制御部を備える。 According to the first aspect, a communication control device is provided. The communication control device relays between the first network and the second network. The communication control device includes a communication unit that transmits and receives packets. Furthermore, the communication control device includes an alarm receiving unit that receives an alarm. Further, the communication control device may include a plurality of packets included in the second network, the packet received by the communication unit from the first network, depending on whether the alarm is received and communication priority. The communication control part which transmits via one or two or more communication paths among communication paths is provided.
 第2の視点によれば、通信システムが提供される。前記通信システムは、サーバ装置を含む。さらに、前記通信システムは、通信制御装置を含む。前記通信制御装置は、第1のネットワークと第2のネットワークを中継する。前記サーバ装置は、前記通信制御装置を制御する。
 前記サーバ装置は、警報を受信する警報受信部を備える。さらに、前記サーバ装置は、前記警報受信部が受信した警報に応じて、前記通信制御装置にパケットの処理に関する情報である制御情報を送信するサーバ制御部を備える。
 前記通信制御装置は、パケットの送受信を行う通信部を備える。さらに、前記通信制御装置は、前記制御情報と通信の優先度とに応じて、前記通信部が前記第1のネットワークから受信したパケットを、前記第2のネットワークに含まれる複数の通信経路のうち、1又は2以上の通信経路を経由して前記パケットを送信する、通信制御部を備える。
According to a second aspect, a communication system is provided. The communication system includes a server device. Furthermore, the communication system includes a communication control device. The communication control device relays between the first network and the second network. The server device controls the communication control device.
The server device includes an alarm receiving unit that receives an alarm. Furthermore, the server device includes a server control unit that transmits control information that is information related to packet processing to the communication control device in response to an alarm received by the alarm reception unit.
The communication control device includes a communication unit that transmits and receives packets. Further, the communication control device may receive a packet received from the first network by the communication unit according to the control information and a communication priority among a plurality of communication paths included in the second network. A communication control unit that transmits the packet via one or more communication paths;
 第3の視点によれば、通信制御方法が提供される。前記通信制御方法は、パケットの送受信を行い、警報を受信し、前記警報の受信の有無と、通信の優先度とに応じて、前記通信部が前記第1のネットワークから受信したパケットを、第2のネットワークに含まれる複数の通信経路のうち、1又は2以上の通信経路を経由して送信する工程を含む。
 なお、本方法は、通信経路を制御する通信制御装置という、特定の機械に結び付けられている。
According to a third aspect, a communication control method is provided. The communication control method performs transmission / reception of a packet, receives an alarm, and receives a packet received from the first network by the communication unit according to presence / absence of the alarm and a communication priority. A step of transmitting via one or more communication paths among a plurality of communication paths included in the two networks.
Note that this method is linked to a specific machine called a communication control device that controls a communication path.
 第4の視点によれば、プログラムが提供される。前記プログラムは、パケットの送受信を行い、警報を受信し、前記警報の受信の有無と、通信の優先度とに応じて、前記通信部が前記第1のネットワークから受信したパケットを、第2のネットワークに含まれる複数の通信経路のうち、1又は2以上の通信経路を経由して送信する処理を、通信制御装置を制御するコンピュータに実行させる。
 なお、これらのプログラムは、コンピュータが読み取り可能な記憶媒体に記録することができる。記憶媒体は、半導体メモリ、ハードディスク、磁気記録媒体、光記録媒体等の非トランジェント(non-transient)なものとすることができる。本発明は、コンピュータプログラム製品として具現することも可能である。
According to a fourth aspect, a program is provided. The program transmits and receives a packet, receives an alarm, and receives a packet received from the first network by the communication unit according to whether or not the alarm is received and a communication priority. A computer that controls the communication control device is caused to execute a process of transmitting via one or more communication paths among a plurality of communication paths included in the network.
Note that these programs can be recorded on a computer-readable storage medium. The storage medium may be non-transient such as a semiconductor memory, a hard disk, a magnetic recording medium, an optical recording medium, or the like. The present invention can also be embodied as a computer program product.
 各視点によれば、状況に応じて、必要な通信を安定的且つ効率的に行うことに貢献する通信制御装置、通信システム、通信制御方法及びプログラムが提供される。 According to each viewpoint, a communication control device, a communication system, a communication control method, and a program that contribute to performing necessary communication stably and efficiently according to the situation are provided.
一実施形態の概要を説明するための図である。It is a figure for demonstrating the outline | summary of one Embodiment. 第1の実施形態に係る通信システム1の全体構成の一例を示すブロック図である。It is a block diagram which shows an example of the whole structure of the communication system 1 which concerns on 1st Embodiment. 通信制御装置100の内部構成の一例を示すブロック図である。2 is a block diagram illustrating an example of an internal configuration of a communication control apparatus 100. FIG. 第1の実施形態に係る通信制御装置100の動作の一例を示すフローチャートである。It is a flowchart which shows an example of operation | movement of the communication control apparatus 100 which concerns on 1st Embodiment. 第1の実施形態に係る通信制御装置100の動作の一例を示すフローチャートである。It is a flowchart which shows an example of operation | movement of the communication control apparatus 100 which concerns on 1st Embodiment. 第2~第4の実施形態に係る通信システム1aの全体構成の一例を示すブロック図である。It is a block diagram which shows an example of the whole structure of the communication system 1a which concerns on 2nd-4th embodiment. 第2の実施形態に係るサーバ装置500の内部構成の一例を示すブロック図である。It is a block diagram which shows an example of an internal structure of the server apparatus 500 which concerns on 2nd Embodiment. 第2の実施形態に係るサーバ装置500の動作の一例を示すフローチャートである。It is a flowchart which shows an example of operation | movement of the server apparatus 500 which concerns on 2nd Embodiment. 第2の実施形態に係るサーバ記憶部501が記憶する、参照情報の一例を示す図である。It is a figure which shows an example of the reference information which the server memory | storage part 501 which concerns on 2nd Embodiment memorize | stores. 第2~第4の実施形態に係る通信制御装置100の動作の一例を示すフローチャートである。10 is a flowchart showing an example of the operation of the communication control apparatus 100 according to the second to fourth embodiments. 第2~第4の実施形態に係る通信制御装置100の動作の一例を示すフローチャートである。10 is a flowchart showing an example of the operation of the communication control apparatus 100 according to the second to fourth embodiments. 第3の実施形態に係るサーバ装置500の内部構成の一例を示すブロック図である。It is a block diagram which shows an example of an internal structure of the server apparatus 500 which concerns on 3rd Embodiment. 第3の実施形態に係るサーバ装置500の動作の一例を示すフローチャートである。It is a flowchart which shows an example of operation | movement of the server apparatus 500 which concerns on 3rd Embodiment. 第3の実施形態に係るサーバ記憶部501が記憶する、参照情報の一例を示す図である。It is a figure which shows an example of the reference information which the server memory | storage part 501 which concerns on 3rd Embodiment memorize | stores. 第4の実施形態に係るサーバ装置500の内部構成の一例を示すブロック図である。It is a block diagram which shows an example of the internal structure of the server apparatus 500 which concerns on 4th Embodiment. 第4の実施形態に係るサーバ装置500の動作の一例を示すフローチャートである。It is a flowchart which shows an example of operation | movement of the server apparatus 500 which concerns on 4th Embodiment. 第4の実施形態に係るサーバ記憶部501が記憶する、参照情報の一例を示す図である。It is a figure which shows an example of the reference information which the server memory | storage part 501 which concerns on 4th Embodiment memorize | stores.
 初めに、図1を用いて一実施形態の概要について説明する。なお、この概要に付記した図面参照符号は、理解を助けるための一例として各要素に便宜上付記したものであり、この概要の記載はなんらの限定を意図するものではない。また、各ブロック図のブロック間の接続線は、双方向及び単方向の双方を含む。一方向矢印については、主たる信号(データ)の流れを模式的に示すものであり、双方向性を排除するものではない。さらに、本願開示に示す回路図、ブロック図、内部構成図、接続図などにおいて、明示は省略するが、入力ポート及び出力ポートが各接続線の入力端及び出力端のそれぞれに存在する。入出力インターフェイスも同様である。 First, an outline of an embodiment will be described with reference to FIG. Note that the reference numerals of the drawings attached to the outline are attached to the respective elements for convenience as an example for facilitating understanding, and the description of the outline is not intended to be any limitation. The connection lines between the blocks in each block diagram include both bidirectional and unidirectional. The unidirectional arrow schematically shows the main signal (data) flow and does not exclude bidirectionality. Further, in the circuit diagram, block diagram, internal configuration diagram, connection diagram, and the like disclosed in the present application, an input port and an output port exist at each of an input end and an output end of each connection line, although they are not explicitly shown. The same applies to the input / output interface.
 上記の通り、状況に応じて、必要な通信を安定的且つ効率的に行うことに貢献する通信制御装置が望まれる。 As described above, a communication control device that contributes to performing necessary communication stably and efficiently is desired depending on the situation.
 そこで、一例として、図1に示す通信制御装置1000を提供する。通信制御装置1000は、第1のネットワークと第2のネットワーク間の通信を中継する。ここで、第2のネットワークは、通信品質の異なる複数の通信経路を含んでいてもよい。例えば、第1のネットワークは、LAN(Local Area Network)であってもよい。また、第2のネットワークは、WAN(Wide Area Network)であってもよい。 Therefore, as an example, the communication control apparatus 1000 shown in FIG. 1 is provided. The communication control apparatus 1000 relays communication between the first network and the second network. Here, the second network may include a plurality of communication paths having different communication qualities. For example, the first network may be a LAN (Local Area Network). Further, the second network may be a WAN (Wide Area Network).
 通信制御装置1000は、通信部1001と、警報受信部1002と、通信制御部1003とを備える。 The communication control apparatus 1000 includes a communication unit 1001, an alarm receiving unit 1002, and a communication control unit 1003.
 通信部1001は、パケットを送受信する。通信制御装置1000は、データをパケットに分割し、該パケットを送受信することで、該データを送受信する通信を実現する。警報受信部1002は、警報を受信する。警報とは、例えば、災害等、危険を知らせるための情報(例えば、全国瞬時警報システムが発信する警報)である。 The communication unit 1001 transmits and receives packets. The communication control apparatus 1000 realizes communication for transmitting / receiving the data by dividing the data into packets and transmitting / receiving the packets. The alarm receiving unit 1002 receives an alarm. The alarm is information for notifying danger such as a disaster (for example, an alarm transmitted from the national instantaneous alarm system).
 通信制御部1003は、警報の受信の有無と、通信の優先度とに応じて、通信部1001が第1のネットワークから受信したパケットを、第2のネットワークに含まれる複数の通信経路のうち、1又は2以上の通信経路を経由して送信する。 The communication control unit 1003 receives a packet received from the first network by the communication unit 1001 from a plurality of communication paths included in the second network according to the presence / absence of alarm reception and the communication priority. Transmit via one or more communication paths.
 例えば、通信制御部1003は、警報を受信した場合、重要なデータ(例えば、公共のインフラストラクチャに関するデータ)に関して、個人利用に関するデータより、安定的に通信が行われるように、通信経路を決定してもよい。 For example, when receiving an alarm, the communication control unit 1003 determines a communication path so that important data (for example, data related to public infrastructure) is more stably communicated than data related to personal use. May be.
 また、例えば、通信制御部1003は、警報を受信していない場合、重要なデータ及び個人利用に関するデータに関して、共に安定的に通信が行われるように、通信経路を決定してもよい。 Further, for example, when the alarm is not received, the communication control unit 1003 may determine a communication path so that important data and data relating to personal use can be stably communicated together.
 従って、通信制御装置1000は、状況及び通信の優先度及び状況に応じて、通信経路を変更し、適切な通信経路を介して、パケットを転送できる。その結果、通信制御装置1000は、状況に応じて、必要な通信を安定的且つ効率的に行うことに貢献する。 Therefore, the communication control apparatus 1000 can change the communication path according to the situation, the communication priority, and the situation, and transfer the packet via the appropriate communication path. As a result, the communication control apparatus 1000 contributes to performing necessary communication stably and efficiently according to the situation.
[第1の実施形態]
 第1の実施形態について、図面を用いて詳細に説明する。
[First Embodiment]
The first embodiment will be described in detail with reference to the drawings.
 図2は、本実施形態に係る通信システム1の全体構成の一例を示すブロック図である。本実施形態に係る通信システム1は、1又は2以上の拠点(拠点200a、拠点200b)を含んで構成される。拠点200aは、端末110aと、通信制御装置100aとを含んで構成される。拠点200bは、端末110bと、通信制御装置100bとを含んで構成される。なお、図2は、説明の便宜上、各拠点に、一つの端末と、一つの通信制御装置とを示すが、これは、各拠点に含まれる端末、通信制御装置の数を、一つに限定する趣旨ではない。各拠点は、2以上の端末、2以上の通信制御装置を含んでもよいことは勿論である。なお、以下の説明では、端末110a、110bを、それぞれ、区別する必要がない場合には、端末110と表記する。また、以下の説明では、通信制御装置100a、100bを、それぞれ、区別する必要がない場合には、通信制御装置100と表記する。なお、図2は、2つの拠点200a、200bを示すが、これは、本実施形態に係る通信システム1が、2つの拠点を含むことに限定する趣旨ではない。本実施形態に係る通信システム1は、3つ以上の拠点を含んで構成されてもよいことは勿論である。また、以下の説明では、拠点200a、200bを、それぞれ、区別する必要がない場合には、拠点200と表記する。 FIG. 2 is a block diagram showing an example of the overall configuration of the communication system 1 according to the present embodiment. The communication system 1 according to the present embodiment includes one or two or more bases (base 200a, base 200b). The base 200a includes a terminal 110a and a communication control device 100a. The base 200b includes a terminal 110b and a communication control device 100b. FIG. 2 shows one terminal and one communication control device at each site for convenience of explanation, but this limits the number of terminals and communication control devices included in each site to one. It is not the purpose. Of course, each base may include two or more terminals and two or more communication control devices. In the following description, the terminals 110a and 110b are referred to as the terminals 110 when it is not necessary to distinguish them. In the following description, the communication control devices 100a and 100b are referred to as the communication control device 100 when it is not necessary to distinguish them. 2 shows two bases 200a and 200b, this is not intended to limit the communication system 1 according to the present embodiment to including two bases. Of course, the communication system 1 according to the present embodiment may include three or more bases. In the following description, the bases 200a and 200b are referred to as the bases 200 when it is not necessary to distinguish them.
 異なる拠点(拠点200a、200b)間は、2以上のWAN(第1のWAN300、第2のWAN400)を介して接続する。具体的には、本実施形態に係る通信システム1においては、異なる拠点(拠点200a、拠点200b)間は、異なる通信品質のWAN(第1のWAN300、第2のWAN400)を介して接続する。 Different bases (bases 200a and 200b) are connected via two or more WANs (first WAN 300 and second WAN 400). Specifically, in the communication system 1 according to the present embodiment, different bases (base 200a, base 200b) are connected via WANs having different communication qualities (first WAN 300 and second WAN 400).
 以下の説明では、説明の便宜上、第1のWAN300の通信品質は、第2のWAN400の通信品質より高いものとする。例えば、第1のWAN300の通信経路は、第2のWAN400の通信品質より高く、SLA(Service Level Agreement)が保障されている通信経路であってもよい。 In the following description, for convenience of explanation, it is assumed that the communication quality of the first WAN 300 is higher than the communication quality of the second WAN 400. For example, the communication path of the first WAN 300 may be a communication path that is higher than the communication quality of the second WAN 400 and that guarantees SLA (Service Level Agreement).
 各拠点(拠点200a、200b)内において、通信制御装置100と端末110間は、LANを介して接続する。以下の説明では、各拠点内のLANを、第1のネットワークとも呼ぶ。また、以下の説明では、各拠点間のWANを、第2のネットワークとも呼ぶ。第2のネットワークは、通信品質の異なる複数の通信経路(第1のWAN300、第2のWAN400)とを含む。なお、図2は、2種類のWAN(第1のWAN300、第2のWAN400)を示すが、これは、各拠点間を2種類のWANで接続することに限定する趣旨ではない。本実施形態に係る通信システム1において、異なる拠点間は、3種類以上のWANを介して接続してもよいことは勿論である。 In each base (base 200a, 200b), the communication control device 100 and the terminal 110 are connected via a LAN. In the following description, the LAN in each base is also referred to as a first network. In the following description, the WAN between the bases is also referred to as a second network. The second network includes a plurality of communication paths (first WAN 300 and second WAN 400) having different communication qualities. Note that FIG. 2 shows two types of WANs (first WAN 300 and second WAN 400), but this is not intended to limit the connection between two bases using two types of WANs. In the communication system 1 according to the present embodiment, it is needless to say that different bases may be connected via three or more types of WANs.
 端末110は、通信手段を備える情報処理装置(コンピュータ)である。端末110は、PC(Personal Computer)、スマートフォン等であってもよく、通信手段を備える装置であればその詳細は問わない。例えば、端末110は、通信手段を備え、IoT(Internet of Things)を実現する機器であってもよい。 The terminal 110 is an information processing apparatus (computer) provided with communication means. The terminal 110 may be a PC (Personal Computer), a smartphone, or the like, and the details thereof are not limited as long as the device includes a communication unit. For example, the terminal 110 may be a device that includes a communication unit and implements IoT (Internet of Things).
 通信制御装置100は、LAN(第1のネットワーク)とWAN(第2のネットワーク)間の通信を中継する装置である。通信制御装置100は、CPE(Customer Promises Equipment)であってもよい。 The communication control device 100 is a device that relays communication between a LAN (first network) and a WAN (second network). The communication control device 100 may be a CPE (Customer Promises Equipment).
 例えば、拠点200a内の端末110aが、拠点200b内の端末110b宛のパケットを送信するとする。その場合、通信制御装置100aは、端末110aからパケットを受信し、WANを介して、拠点200b側に、受信したパケットを転送する。 For example, it is assumed that the terminal 110a in the base 200a transmits a packet addressed to the terminal 110b in the base 200b. In that case, the communication control apparatus 100a receives the packet from the terminal 110a, and transfers the received packet to the base 200b side via the WAN.
 次に、通信制御装置100について詳細に説明する。 Next, the communication control apparatus 100 will be described in detail.
 図3は、通信制御装置100の内部構成の一例を示すブロック図である。通信制御装置100は、記憶部101と、通信部102と、警報受信部103と、通信制御部104とを含んで構成される。 FIG. 3 is a block diagram illustrating an example of the internal configuration of the communication control apparatus 100. The communication control apparatus 100 includes a storage unit 101, a communication unit 102, an alarm reception unit 103, and a communication control unit 104.
 通信制御装置100の各モジュールは、通信制御装置100に搭載されたコンピュータに、そのハードウェアを用いて、通信制御装置100に動作を実行させるコンピュータプログラムにより実現してもよい。通信制御装置100は、ハードウェア(CPU(Central Processing Unit)、パケットを受信するハードウェア等)、及びソフトウェアを含んで構成される。 Each module of the communication control apparatus 100 may be realized by a computer program that causes the communication control apparatus 100 to execute an operation using the hardware of a computer mounted on the communication control apparatus 100. The communication control apparatus 100 includes hardware (CPU (Central Processing Unit), hardware that receives a packet, etc.) and software.
 記憶部101は、通信制御装置100を動作させるために必要な情報を記憶する。記憶部101は、磁気ディスク装置や光ディスク装置、半導体メモリによって実現される。 The storage unit 101 stores information necessary for operating the communication control apparatus 100. The storage unit 101 is realized by a magnetic disk device, an optical disk device, or a semiconductor memory.
 また、記憶部101は、通信の優先度を管理する。具体的には、記憶部101は、通信の内容(種類)と、優先度とを対応付けた情報を管理(記憶)する。例えば、記憶部101は、銀行のトランザクションに関する通信(即ち、ミッションクリティカルな通信)に関して、動画閲覧に関する通信(即ち、ミッションクリティカルではない通信)より、高い優先度を対応付けて記憶してもよい。 Also, the storage unit 101 manages communication priority. Specifically, the storage unit 101 manages (stores) information that associates the content (type) of communication with the priority. For example, the storage unit 101 may store a higher priority in association with communication related to bank transactions (that is, mission critical communication) than communication related to moving image viewing (that is, communication that is not mission critical).
 通信部102は、パケットを送受信する。通信部102は、NIC(Network Interface Card)を用いて実現してもよい。例えば、通信部102は、第1のネットワーク(LAN)内の端末110から、他の拠点内の端末110宛のパケットを受信する。さらに、通信部102は、他の拠点内の端末110から、第2のネットワーク(WAN)を介して、第1のネットワーク(LAN)内の端末110宛のパケットを受信する。 The communication unit 102 transmits and receives packets. The communication unit 102 may be realized using a NIC (Network Interface Card). For example, the communication unit 102 receives a packet addressed to the terminal 110 in another base from the terminal 110 in the first network (LAN). Further, the communication unit 102 receives a packet addressed to the terminal 110 in the first network (LAN) from the terminal 110 in another base via the second network (WAN).
 警報受信部103は、警報を受信する。警報とは、例えば、災害等、危険を知らせるための情報である。警報は、地震・大雨・洪水・津波・暴風等に関する警報であってもよい。また、警報とは、全国瞬時警報システムが発信する警報であってもよい。以下の説明では、所定の条件を満たす警報を、重大な警報と呼ぶ。例えば、重大な警報とは、津波や洪水等の即時対処が必要となる危険を知らせるための情報である。 The alarm receiving unit 103 receives an alarm. The alarm is information for notifying danger such as a disaster. The alarm may be an alarm regarding an earthquake, heavy rain, flood, tsunami, storm, or the like. Further, the alarm may be an alarm transmitted by the national instantaneous alarm system. In the following description, an alarm that satisfies a predetermined condition is called a serious alarm. For example, a serious alarm is information for notifying a danger that requires immediate action such as a tsunami or flood.
 さらに、警報受信部103は、重大な警報の受信の有無に関する、受信ステータス(受信状態)を管理する。具体的には、警報受信部103は、重大な警報の受信ステータスとして、「受信」の状態、又は「未受信」の状態を管理する。警報受信部103は、重大な警報を受信した場合、重大な警報の受信ステータスを、「受信」の状態に設定する。一方、警報受信部103は、重大な警報を受信していない場合、重大な警報の受信ステータスを、「未受信」の状態に設定する。 Furthermore, the alarm receiving unit 103 manages the reception status (reception state) regarding whether or not a serious alarm has been received. Specifically, the alarm receiving unit 103 manages a “reception” state or a “not received” state as a serious alarm reception status. When the alarm receiving unit 103 receives a serious alarm, the alarm receiving unit 103 sets the reception status of the serious alarm to a “reception” state. On the other hand, if the alarm receiving unit 103 has not received a serious alarm, the alarm receiving unit 103 sets the reception status of the serious alarm to a “not received” state.
 通信制御部104は、通信部102が受信したパケットの通信経路(転送経路)を制御する。通信制御部104は、受信部が、LANからパケットを受信した場合、重大な警報の受信の有無と、通信の優先度とに応じて、WANに含まれる、複数の通信経路のうち、1又は2以上の通信経路を、パケットの転送先として決定する。そして、通信制御部104は、決定した通信経路を経由して、パケットを転送する。 The communication control unit 104 controls the communication path (transfer path) of the packet received by the communication unit 102. When the reception unit receives a packet from the LAN, the communication control unit 104 determines that one or more of a plurality of communication paths included in the WAN, depending on whether a serious alarm is received and the communication priority. Two or more communication paths are determined as packet transfer destinations. Then, the communication control unit 104 transfers the packet via the determined communication path.
 より具体的には、通信制御部104は、警報受信部103が重大な警報を受信した場合、優先度が所定の閾値を超える通信に関して、受信したパケットを複製する。そして、通信制御部104は、WANに含まれる、2以上の通信経路に、受信したパケットを転送する。 More specifically, when the alarm receiving unit 103 receives a serious alarm, the communication control unit 104 duplicates the received packet for communication whose priority exceeds a predetermined threshold. Then, the communication control unit 104 transfers the received packet to two or more communication paths included in the WAN.
 所定の閾値とは、例えば、通信の内容(種類)に応じて設定された数値や高低を示す指標であっても良い。所定の閾値とは、例えば、パケットの送信元に応じて設定された数値や、パケットのヘッダのToS(Type Of Service)フィールドの値や、CoS(Class of Service)フィールドの値が設定されても良い。 The predetermined threshold value may be, for example, a numerical value set according to the content (type) of communication or an index indicating high or low. The predetermined threshold is, for example, a numerical value set according to a packet transmission source, a value of a ToS (Type Of Service) field of a packet header, or a value of a CoS (Class of Service) field. good.
 そして、転送されたパケットの宛先側の通信制御部104は、通信部102がWANからパケットを受信した場合、LAN側に、受信したパケットを転送する。そして、通信制御部104は、LAN側に、WANから受信したパケットを転送した後、WANから、複製された同じパケットを受信した場合、当該複製されたパケットを破棄する。ここで、「同じパケット」とは、当該パケットが、当該パケットを受信する前に受信したパケットと同じ内容であるということである。 Then, the communication control unit 104 on the destination side of the transferred packet transfers the received packet to the LAN side when the communication unit 102 receives the packet from the WAN. Then, after transferring the packet received from the WAN to the LAN side, the communication control unit 104 discards the copied packet when receiving the same copied packet from the WAN. Here, “same packet” means that the packet has the same content as the packet received before receiving the packet.
 例えば、通信制御装置100aの警報受信部103が、重大な警報を受信したとする。その場合、通信制御装置100aの警報受信部103が、重大な警報を受信後には、通信制御装置100aの通信制御部104は、優先度が所定の閾値を超える通信に関して、受信したパケットを複製する。そして、通信制御装置100aの通信制御部104は、第1のWAN300と、第2のWAN400とに、それぞれ、同じパケットを転送する。なお、上記の通り、第1のWAN300と第2のWAN400とは、異なる通信品質であるものとする。 For example, it is assumed that the alarm receiving unit 103 of the communication control device 100a receives a serious alarm. In that case, after the alarm receiving unit 103 of the communication control device 100a receives a serious alarm, the communication control unit 104 of the communication control device 100a duplicates the received packet for communication whose priority exceeds a predetermined threshold. . Then, the communication control unit 104 of the communication control apparatus 100a transfers the same packet to the first WAN 300 and the second WAN 400, respectively. As described above, it is assumed that the first WAN 300 and the second WAN 400 have different communication qualities.
 そして、通信制御装置100bの通信部102が、第1のWAN300を介して、通信制御装置100aが送信したパケットを受信したとする。そして、通信制御装置100bの通信制御部104は、通信制御装置100bが属するLAN側に、通信部102が受信したパケットを転送したとする。その後、通信制御装置100bの通信部102が、第2のWAN400から、受信したパケットと同じパケット(即ち、複製されたパケット)を受信したとする。その場合、通信制御装置100bの通信制御部104は、当該複製されたパケットを破棄する。 Then, it is assumed that the communication unit 102 of the communication control apparatus 100b receives the packet transmitted by the communication control apparatus 100a via the first WAN 300. Then, it is assumed that the communication control unit 104 of the communication control device 100b transfers the packet received by the communication unit 102 to the LAN side to which the communication control device 100b belongs. Thereafter, it is assumed that the communication unit 102 of the communication control apparatus 100b receives the same packet (that is, a duplicated packet) as the received packet from the second WAN 400. In that case, the communication control unit 104 of the communication control apparatus 100b discards the copied packet.
 また、警報受信部103が、重大な警報を受信した場合、優先度が所定の閾値以下の通信に関して、通信部102が、LANからパケットを受信したとする。その場合、通信制御部104は、WANに含まれる、複数の通信経路のうち、相対的に通信品質の低い通信経路を、受信したパケットを転送する経路として決定する。 Further, when the alarm receiving unit 103 receives a serious alarm, it is assumed that the communication unit 102 has received a packet from the LAN with respect to communication whose priority is equal to or lower than a predetermined threshold. In that case, the communication control unit 104 determines a communication path having a relatively low communication quality among a plurality of communication paths included in the WAN as a path for transferring the received packet.
 また、通信制御部104は、受信したパケットを転送する経路として決定した通信経路の通信量が、該通信経路の通信帯域で送信できる通信量を超える場合、優先度が所定の閾値以下の通信のパケットを破棄する。 In addition, when the communication amount of the communication route determined as a route for transferring the received packet exceeds the communication amount that can be transmitted in the communication band of the communication route, the communication control unit 104 performs communication with a priority equal to or lower than a predetermined threshold. Discard the packet.
 例えば、警報受信部103が重大な警報を受信後、通信制御部104は、優先度が所定の閾値を超える通信に関して、受信したパケットを複製したとする。そして、通信制御部104は、第1のWAN300と、第2のWAN400とに、それぞれ、同じパケットを転送したとする。ここで、通信制御部104が、第1のWAN300と、第2のWAN400とに、それぞれ、同じパケットを転送することで、第2のWAN400の通信量が、該通信経路の通信帯域で送信できる通信量を超えるとする。その場合、通信制御部104は、第2のWAN400の通信経路に送信予定のパケットのうち、優先度が所定の閾値以下の通信のパケットを破棄する。 For example, it is assumed that after the alarm receiving unit 103 receives a serious alarm, the communication control unit 104 duplicates the received packet for communication whose priority exceeds a predetermined threshold. Then, it is assumed that the communication control unit 104 transfers the same packet to the first WAN 300 and the second WAN 400, respectively. Here, the communication control unit 104 transfers the same packet to the first WAN 300 and the second WAN 400, respectively, so that the communication amount of the second WAN 400 can be transmitted in the communication band of the communication path. Suppose that the communication volume is exceeded. In that case, the communication control unit 104 discards communication packets whose priority is less than or equal to a predetermined threshold among packets scheduled to be transmitted to the communication path of the second WAN 400.
 次に、図4を参照しながら、通信制御装置100の動作について詳細に説明する。 Next, the operation of the communication control apparatus 100 will be described in detail with reference to FIG.
 ステップS1において、通信制御装置100は、通信の優先度を設定する。具体的には、通信制御装置100は、通信の内容(種類)と、優先度とを対応付けた情報を、記憶部101に登録(記憶)する。 In step S1, the communication control device 100 sets communication priority. Specifically, the communication control apparatus 100 registers (stores) information in which the content (type) of communication is associated with the priority in the storage unit 101.
 より具体的には、通信制御装置100の管理者等が、通信の内容(種類)と、当該通信の優先度を、通信制御装置100に入力(登録)する。そして、通信制御装置100は、入力された通信の内容(種類)と、当該通信の優先度とを対応付けて、記憶部101に記憶させる。 More specifically, the administrator or the like of the communication control apparatus 100 inputs (registers) the communication content (type) and the priority of the communication to the communication control apparatus 100. Then, the communication control apparatus 100 associates the content (type) of the input communication with the priority of the communication, and stores it in the storage unit 101.
 ステップS2において、重大な警報を受信したか否かを、警報受信部103は判断する。具体的には、重大な警報の受信ステータスが、「受信」の状態である場合には、警報受信部103は、重大な警報を受信したと判断する。一方、重大な警報の受信ステータスが、「未受信」の状態である場合には、警報受信部103は、重大な警報を受信していないと判断する。 In step S2, the alarm receiving unit 103 determines whether or not a serious alarm has been received. Specifically, when the reception status of a serious alarm is “reception”, the alarm reception unit 103 determines that a serious alarm has been received. On the other hand, if the reception status of the serious alarm is “not received”, the alarm receiver 103 determines that no serious alarm has been received.
 警報受信部103が重大な警報を受信した場合(ステップS2のYes分岐)には、警報受信部103が、重大な警報の解除通知を受信したか否かを判断する(ステップS3)。 When the alarm receiving unit 103 receives a serious alarm (Yes branch in step S2), the alarm receiving unit 103 determines whether or not a serious alarm release notification has been received (step S3).
 警報受信部103が重大な警報の解除通知を受信した場合(ステップS3のYes分岐)には、警報受信部103は、重大な警報の受信ステータスを「未受信」の状態に変更する(ステップS4)。重大な警報の受信ステータスを「未受信」の状態に変更した後、通信部102は、LANからパケットを受信したか否かを判断する(ステップS13)。 When the alarm receiving unit 103 receives a notification of canceling a serious alarm (Yes branch in step S3), the alarm receiving unit 103 changes the reception status of the serious alarm to a state of “not received” (step S4). ). After changing the reception status of the serious alarm to the “not received” state, the communication unit 102 determines whether or not a packet has been received from the LAN (step S13).
 警報受信部103が重大な警報の解除通知を受信していない場合(ステップS3のNo分岐)には、通信部102は、LANからパケットを受信したか否かを判断する(ステップS5)。通信部102がLANからパケットを受信した場合(ステップS5のYes分岐)には、通信制御部104は、通信の優先度が所定の閾値を超えるか否かを判断する(ステップS6)。一方、通信部102がLANからパケットを受信していない(ステップS5のNo分岐)場合には、通信部102は、WANからパケットを受信したか否かを判断する(図5に示すステップS21)。 If the alarm receiving unit 103 has not received a serious alarm release notification (No branch in step S3), the communication unit 102 determines whether a packet is received from the LAN (step S5). When the communication unit 102 receives a packet from the LAN (Yes branch in step S5), the communication control unit 104 determines whether or not the communication priority exceeds a predetermined threshold (step S6). On the other hand, if the communication unit 102 has not received a packet from the LAN (No branch in step S5), the communication unit 102 determines whether a packet has been received from the WAN (step S21 shown in FIG. 5). .
 ステップS6において、通信の優先度が所定の閾値を超えるか否かを、通信制御部104は判断する。具体的には、通信制御部104は、記憶部101を参照し、受信したパケットに対応する通信の内容(種類)に基づいて、当該通信に対応する優先度を取得する。そして、通信制御部104は、取得した優先度が、所定の閾値を超えるか否かを判断する。 In step S6, the communication control unit 104 determines whether or not the communication priority exceeds a predetermined threshold. Specifically, the communication control unit 104 refers to the storage unit 101 and acquires the priority corresponding to the communication based on the content (type) of the communication corresponding to the received packet. Then, the communication control unit 104 determines whether or not the acquired priority exceeds a predetermined threshold value.
 通信の優先度が所定の閾値を超える場合(ステップS6のYes分岐)には、通信制御部104は、パケットを複製して、WANに含まれる2以上の通信経路を、パケットの転送先として決定する(ステップS8)。例えば、通信の優先度が所定の閾値を超える場合には、通信制御部104は、パケットを複製して、第1のWAN300と第2のWAN400とを、同じパケットの転送経路として決定する。 If the communication priority exceeds a predetermined threshold (Yes branch in step S6), the communication control unit 104 duplicates the packet and determines two or more communication paths included in the WAN as the packet transfer destination. (Step S8). For example, when the communication priority exceeds a predetermined threshold, the communication control unit 104 duplicates the packet and determines the first WAN 300 and the second WAN 400 as the transfer path of the same packet.
 一方、通信の優先度が所定の閾値以下である場合(ステップS6のNo分岐)には、通信制御部104は、通信の優先度に基づいて、パケットの転送経路を決定する(ステップS7)。具体的には、通信の優先度が所定の閾値以下である場合には、通信制御部104は、相対的に通信品質の低い通信経路(例えば、第2のWAN400)を、パケットの転送先として決定する。 On the other hand, when the communication priority is equal to or lower than the predetermined threshold (No branch in step S6), the communication control unit 104 determines a packet transfer path based on the communication priority (step S7). Specifically, when the communication priority is equal to or lower than a predetermined threshold, the communication control unit 104 uses a communication path having a relatively low communication quality (for example, the second WAN 400) as a packet transfer destination. decide.
 ステップS9において、通信制御部104は、パケットの転送経路として決定した通信経路の通信帯域で送信できる通信量を超過しているか否かを判定する(ステップS9)。通信制御部104は、パケットの転送経路として決定した通信経路の通信量が通信帯域を超える場合(ステップS9のYes分岐)、通信の優先度が所定の閾値以下であるかを判定する(ステップS10)。通信制御部104は、該通信の優先度が所定の閾値以下の場合(ステップS10のYes分岐)、当該パケットを破棄する(ステップS11)。 In step S9, the communication control unit 104 determines whether or not the amount of communication that can be transmitted in the communication band of the communication path determined as the packet transfer path is exceeded (step S9). When the communication amount of the communication path determined as the packet transfer path exceeds the communication band (Yes branch in step S9), the communication control unit 104 determines whether the communication priority is equal to or lower than a predetermined threshold (step S10). ). If the communication priority is equal to or lower than the predetermined threshold (Yes branch in step S10), the communication control unit 104 discards the packet (step S11).
 例えば、通信制御部104は、パケットを複製して、第1のWAN300と第2のWAN400とに、同じパケットを転送したとする。それにより、第2のWAN400に関して、通信量が該通信経路の通信帯域で送信できる通信量を超えるとする。この場合、通信制御部104は、第2のWAN400を転送先とするパケットのうち、通信の優先度が所定の閾値以下の通信に対応するパケットに関して、第2のWAN400に転送する前に、当該パケットを破棄する。 For example, it is assumed that the communication control unit 104 duplicates a packet and transfers the same packet to the first WAN 300 and the second WAN 400. Thereby, regarding the second WAN 400, it is assumed that the communication amount exceeds the communication amount that can be transmitted in the communication band of the communication path. In this case, the communication control unit 104 transmits the packet corresponding to the communication whose communication priority is equal to or lower than a predetermined threshold among the packets having the second WAN 400 as the transfer destination before transferring the packet to the second WAN 400. Discard the packet.
 通信制御部104は、通信の優先度が所定の閾値以上である場合(ステップS10のNo分岐)、通信制御部104は、破棄していないパケットについて、決定した通信経路を経由してパケットを転送する(ステップS12)。つまり、通信制御部104は、受信したパケットを破棄せず、決定した通信経路を経由して、パケットを転送する。 When the communication priority is equal to or higher than the predetermined threshold (No branch in step S10), the communication control unit 104 transfers the packet through the determined communication path for the packet that has not been discarded. (Step S12). That is, the communication control unit 104 transfers the packet via the determined communication path without discarding the received packet.
 通信制御部104は、パケットの転送経路として決定した通信経路の通信量が該通信経路の通信帯域で送信できる通信量を超えない場合(ステップS9のNo分岐)、通信制御部104は、破棄していないパケットについて、決定した通信経路を経由してパケットを転送する(ステップS12)。つまり、通信制御部104は、受信したパケットを破棄せず、決定した通信経路を経由して、パケットを転送する。 When the communication amount of the communication path determined as the packet transfer route does not exceed the communication amount that can be transmitted in the communication band of the communication route (No branch in step S9), the communication control unit 104 discards the communication control unit 104. For a packet that has not been received, the packet is transferred via the determined communication path (step S12). That is, the communication control unit 104 transfers the packet via the determined communication path without discarding the received packet.
 一方、警報受信部103が重大な警報を受信していない場合(ステップS2のNo分岐)には、通信部102は、受信したパケットがLANから受信したものか否かを判断する(ステップS13)。 On the other hand, when the alarm receiving unit 103 has not received a serious alarm (No branch in step S2), the communication unit 102 determines whether or not the received packet is received from the LAN (step S13). .
 通信部102がLANからパケットを受信した場合(ステップS13のYes分岐)には、通信制御部104は、通信の優先度に基づいて、WANに含まれる通信経路を、パケットの転送先として決定する(ステップS14)。 When the communication unit 102 receives a packet from the LAN (Yes branch in step S13), the communication control unit 104 determines a communication path included in the WAN as a packet transfer destination based on the communication priority. (Step S14).
 例えば、通信制御部104は、通信の優先度が所定の閾値を超える通信に関して、相対的に通信品質の高い通信経路(第1のWAN300)を、パケットの転送先として決定する。一方、通信制御部104は、通信の優先度が所定の閾値以下の通信に関して、相対的に通信品質の低い通信経路(第2のWAN400)を、パケットの転送先として決定する。 For example, the communication control unit 104 determines a communication path (first WAN 300) having a relatively high communication quality as a packet transfer destination for communication whose communication priority exceeds a predetermined threshold. On the other hand, the communication control unit 104 determines a communication path (second WAN 400) having a relatively low communication quality as a packet transfer destination for communication whose communication priority is equal to or lower than a predetermined threshold.
 ステップS15において、通信制御部104は、決定した通信経路を経由して、パケットを転送する。一方、通信部102がLANからパケットを受信していない場合(ステップS13のNo分岐)には、通信部102はWANからパケットを受信したか否かを判断する(図5に示すステップS21)。 In step S15, the communication control unit 104 transfers the packet via the determined communication path. On the other hand, if the communication unit 102 has not received a packet from the LAN (No branch in step S13), the communication unit 102 determines whether a packet has been received from the WAN (step S21 shown in FIG. 5).
 次に、図5を参照しながら、通信制御装置100がWANからパケットを受信した場合の動作について説明する。 Next, the operation when the communication control apparatus 100 receives a packet from the WAN will be described with reference to FIG.
 ステップS21において、WANからパケットを受信したか否かを、通信部102は判断する。WANからパケットを受信した場合(ステップS21のYes分岐)には、通信制御部104は、受信したパケットと同じパケットを受信したか否かを判断する(ステップS22)。一方、WANからパケットを受信していない場合(ステップS21のNo分岐)には、通信制御装置100は、図4に示すステップS2に戻り、処理を継続する。 In step S21, the communication unit 102 determines whether a packet is received from the WAN. When a packet is received from the WAN (Yes branch in step S21), the communication control unit 104 determines whether the same packet as the received packet has been received (step S22). On the other hand, if no packet is received from the WAN (No branch in step S21), the communication control apparatus 100 returns to step S2 shown in FIG. 4 and continues the processing.
 ステップS22において、受信したパケットと同じパケットを受信したか否かを、通信制御部104は判断する。上記の通り、「同じパケット」とは、当該パケットが、当該パケットを受信する前に受信したパケットが複製されたものである。受信したパケットと同じパケットを受信した場合(ステップS22のYes分岐)には、通信制御部104は、受信したパケットを破棄する(ステップS23)。そして、通信制御装置100は、図4に示すステップS2に戻り、処理を継続する。一方、受信したパケットと同じパケットを受信していない場合(ステップS22のNo分岐)には、通信制御部104は、受信したパケットを、LANを経由して転送する。そして、通信制御装置100は、図4に示すステップS2に戻り、処理を継続する。 In step S22, the communication control unit 104 determines whether or not the same packet as the received packet has been received. As described above, the “same packet” is a copy of the packet received before the packet is received. When the same packet as the received packet is received (Yes branch in step S22), the communication control unit 104 discards the received packet (step S23). And the communication control apparatus 100 returns to step S2 shown in FIG. 4, and continues a process. On the other hand, when the same packet as the received packet has not been received (No branch in step S22), the communication control unit 104 transfers the received packet via the LAN. And the communication control apparatus 100 returns to step S2 shown in FIG. 4, and continues a process.
 以上のように、本実施形態に係る通信システム1においては、通信制御装置100が、警報を受信する。そして、本実施形態に係る通信制御装置100は、警報を受信した場合、優先度の高い通信(例えば、ミッションクリティカルな通信)に関して、パケットを複製する。そして、本実施形態に係る通信制御装置100は、複数の通信経路をパケットの転送先として決定し、決定した通信経路を経由して、パケットを転送する。それにより、本実施形態に係る通信システム1は、緊急事態(例えば、災害等)が発生した場合であっても、必要な通信を安定的に行うことに貢献する。 As described above, in the communication system 1 according to the present embodiment, the communication control apparatus 100 receives an alarm. And the communication control apparatus 100 which concerns on this embodiment copies a packet regarding communication (for example, mission critical communication) with high priority, when an alarm is received. Then, the communication control apparatus 100 according to the present embodiment determines a plurality of communication paths as packet transfer destinations, and transfers the packets via the determined communication paths. Accordingly, the communication system 1 according to the present embodiment contributes to stably performing necessary communication even when an emergency situation (for example, a disaster or the like) occurs.
 例えば、通信制御装置100が、重大な警報を受信後、相対的に通信品質の高い通信経路(第1のWAN300の通信経路)に障害が発生したとする。本実施形態に係る通信システム1において、通信制御装置100は、重大な警報を受信した場合、優先度の高い通信に関して、パケットを複製する。そして、通信制御装置100は、複数の通信経路をパケットの転送先として決定し、決定した通信経路を経由して、パケットを転送する。そのため、本実施形態に係る通信システム1においては、相対的に通信品質の高い通信経路に、障害が発生した場合であっても、相対的に通信品質の低い通信経路を介して、拠点間の通信を継続することができる。従って、本実施形態に係る通信システム1は、緊急事態(例えば、災害等)が発生し、通信経路に障害が発生した場合であっても、必要な通信を安定的に行うことに貢献する。 For example, it is assumed that a failure has occurred in a communication path with relatively high communication quality (communication path of the first WAN 300) after the communication control apparatus 100 receives a serious alarm. In the communication system 1 according to the present embodiment, when the communication control apparatus 100 receives a serious alarm, the communication control apparatus 100 duplicates a packet for communication with a high priority. Then, the communication control apparatus 100 determines a plurality of communication paths as packet transfer destinations, and transfers the packets via the determined communication paths. Therefore, in the communication system 1 according to the present embodiment, even if a failure occurs in a communication path having a relatively high communication quality, the communication between the bases is performed via the communication path having a relatively low communication quality. Communication can be continued. Therefore, the communication system 1 according to the present embodiment contributes to stably performing necessary communication even when an emergency situation (for example, a disaster or the like) occurs and a failure occurs in the communication path.
 一方、本実施形態に係る通信システム1においては、通信制御装置100は、重大な警報を受信していない場合には、通信の優先度に応じて、通信経路を決定する。従って、本実施形態に係る通信システム1は、状況に応じて、必要な通信を安定的且つ効率的に行うことに貢献する。 On the other hand, in the communication system 1 according to the present embodiment, the communication control device 100 determines a communication path according to the priority of communication when a serious alarm is not received. Therefore, the communication system 1 according to the present embodiment contributes to performing necessary communication stably and efficiently according to the situation.
[第2の実施形態]
 次に、第2の実施形態について、図面を用いて詳細に説明する。
[Second Embodiment]
Next, a second embodiment will be described in detail with reference to the drawings.
 本実施形態は、通信制御装置とは異なるサーバ装置が、警報を受信し、通信経路を制御するための情報を、警報に対応するエリアの通信制御装置に送信する形態である。なお、本実施形態における説明では、上記の実施形態と重複する部分の説明は省略する。さらに、本実施形態における説明では、上記の実施形態と同一の構成要素には、同一の符号を付し、その説明を省略する。また、本実施形態における説明では、上記の実施形態と同一の作用効果についても、その説明を省略する。 This embodiment is a form in which a server device different from the communication control device receives an alarm and transmits information for controlling the communication path to the communication control device in the area corresponding to the alarm. In the description of the present embodiment, the description of the same part as the above embodiment is omitted. Further, in the description of the present embodiment, the same components as those of the above-described embodiment are denoted by the same reference numerals, and the description thereof is omitted. In the description of the present embodiment, the description of the same operational effects as those of the above-described embodiment is also omitted.
 図6は、本実施形態に係る通信システム1aの全体構成の一例を示すブロック図である。図2に示す通信システム1と、図6に示す通信システム1aとの相違点は、図6に示す通信システム1aは、サーバ装置500を含んで構成される点である。以下、本実施形態に係る通信システム1aと、図2に示す通信システム1の相違点について詳細に説明する。 FIG. 6 is a block diagram showing an example of the overall configuration of the communication system 1a according to the present embodiment. The difference between the communication system 1 shown in FIG. 2 and the communication system 1a shown in FIG. 6 is that the communication system 1a shown in FIG. Hereinafter, differences between the communication system 1a according to the present embodiment and the communication system 1 illustrated in FIG. 2 will be described in detail.
 サーバ装置500は、通信制御装置100とネットワークを介して接続する。例えば、サーバ装置500は、第1のWAN300、第2のWAN400の少なくともいずれかを介して、通信制御装置100と接続してもよい。あるいは、サーバ装置500は、第1のWAN300及び第2のWAN400とは異なるネットワークを介して、少なくとも一の通信制御装置100と接続してもよい。 The server device 500 is connected to the communication control device 100 via a network. For example, the server apparatus 500 may be connected to the communication control apparatus 100 via at least one of the first WAN 300 and the second WAN 400. Alternatively, the server device 500 may be connected to at least one communication control device 100 via a network different from the first WAN 300 and the second WAN 400.
 図7は、本実施形態に係るサーバ装置500の内部構成の一例を示すブロック図である。サーバ装置500は、サーバ記憶部501と、警報受信部502と、サーバ制御部503とを含んで構成される。 FIG. 7 is a block diagram illustrating an example of the internal configuration of the server device 500 according to the present embodiment. The server device 500 includes a server storage unit 501, an alarm reception unit 502, and a server control unit 503.
 サーバ装置500の各モジュールは、サーバ装置500に搭載されたコンピュータに、そのハードウェアを用いて、サーバ装置500に動作を実行させるコンピュータプログラムにより実現してもよい。 Each module of the server device 500 may be realized by a computer program that causes the server device 500 to execute an operation using a hardware of a computer mounted on the server device 500.
 サーバ記憶部501は、サーバ装置500を動作させるために必要な情報を記憶する。サーバ記憶部501は、磁気ディスク装置や光ディスク装置、半導体メモリによって実現される。 The server storage unit 501 stores information necessary for operating the server device 500. The server storage unit 501 is realized by a magnetic disk device, an optical disk device, or a semiconductor memory.
 サーバ記憶部501は、参照情報を管理(記憶)する。 The server storage unit 501 manages (stores) reference information.
 参照情報とは、警報受信部502が重大な警報を受信した場合に、サーバ制御部503が、受信した警報に対する対応を判断するために使用する情報である。本実施形態に係る参照情報は、エリア情報を含む。 The reference information is information used by the server control unit 503 to determine the response to the received alarm when the alarm receiving unit 502 receives a serious alarm. The reference information according to the present embodiment includes area information.
 エリア情報とは、所定の範囲のエリアを特定する情報である。例えば、エリア情報は、エリアの名称(例えば、「東京」、「大阪」等)であってもよい。ここで、エリア情報が示すエリアは、2以上の拠点200を含む範囲のエリアであってもよい。 Area information is information that identifies an area within a predetermined range. For example, the area information may be an area name (for example, “Tokyo”, “Osaka”, etc.). Here, the area indicated by the area information may be an area in a range including two or more bases 200.
 さらに、サーバ記憶部501は、エリア情報と、当該エリア情報に対応する、1又は2以上の通信制御装置100を特定する情報とを対応付けて記憶する。ここで、通信制御装置100を特定する情報とは、通信制御装置の識別番号であってもよい。通信制御装置100を特定する情報とは、通信制御装置100のIP(Internet Protocol)アドレスであってもよい。または、通信制御装置100を特定する情報とは、通信制御装置100のMAC(Media Access Control)アドレスであってもよい。通信制御装置100を特定する情報は、サーバ装置500と通信制御装置100間の通信を実現する情報であれば、その詳細は問わない。 Further, the server storage unit 501 stores area information and information specifying one or more communication control devices 100 corresponding to the area information in association with each other. Here, the information specifying the communication control device 100 may be an identification number of the communication control device. The information specifying the communication control device 100 may be an IP (Internet Protocol) address of the communication control device 100. Alternatively, the information specifying the communication control device 100 may be a MAC (Media Access Control) address of the communication control device 100. The information specifying the communication control device 100 is not particularly limited as long as it is information that realizes communication between the server device 500 and the communication control device 100.
 例えば、サーバ記憶部501は、エリア情報としてエリアの名称を含む、参照情報を管理するとする。その場合、サーバ記憶部501は、エリアの名称と、当該エリアに含まれる、拠点200内の通信制御装置100を特定する情報とを、対応付けて管理(記憶)する。 For example, it is assumed that the server storage unit 501 manages reference information including an area name as area information. In that case, the server storage unit 501 manages (stores) the name of the area and information specifying the communication control device 100 in the base 200 included in the area in association with each other.
 警報受信部502は、警報を受信する。上記の通り、本書においては、所定の条件を満たす警報を、重大な警報とも呼ぶ。本実施形態に係る警報受信部502が受信する警報は、警報対象エリア情報を含む。 The alarm receiving unit 502 receives an alarm. As described above, in this document, an alarm that satisfies a predetermined condition is also called a serious alarm. The alarm received by the alarm receiver 502 according to the present embodiment includes alarm target area information.
 警報対象エリア情報とは、発信される警報が対象としているエリアを特定する情報である。例えば、警報受信部502が受信した警報に関して、警報対象エリア情報が、「エリアA」である場合、当該警報は、「エリアA」を対象とする警報である。 Alarm target area information is information that identifies an area that is targeted by a transmitted alarm. For example, regarding the alarm received by the alarm receiver 502, when the alarm target area information is “Area A”, the alarm is an alarm targeting “Area A”.
 さらに、警報受信部502は、重大な警報の受信の有無に関する、受信ステータス(受信状態)を管理する。具体的には、警報受信部502は、重大な警報の受信ステータスとして、「受信」の状態又は「未受信」の状態を管理する。警報受信部502は、重大な警報を受信した場合、重大な警報の受信ステータスを、「受信」の状態に設定する。一方、警報受信部502は、重大な警報を受信していない場合、重大な警報の受信ステータスを、「未受信」の状態に設定する。 Furthermore, the alarm receiving unit 502 manages the reception status (reception state) regarding whether or not a serious alarm has been received. Specifically, the alarm receiving unit 502 manages a “received” state or a “not received” state as a serious alarm reception status. When the alarm reception unit 502 receives a serious alarm, the alarm reception unit 502 sets the reception status of the serious alarm to a “reception” state. On the other hand, if the alarm receiving unit 502 has not received a serious alarm, the alarm reception unit 502 sets the reception status of the serious alarm to a state of “not received”.
 サーバ制御部503は、警報受信部502が重大な警報を受信した場合、サーバ記憶部501に記憶される参照情報を参照して、通信制御装置100に制御情報を送信する。 When the alarm receiving unit 502 receives a serious alarm, the server control unit 503 refers to the reference information stored in the server storage unit 501 and transmits the control information to the communication control apparatus 100.
 制御情報とは、通信制御装置100を制御するための情報である。制御情報は、対応処理情報を含む。 Control information is information for controlling the communication control device 100. The control information includes correspondence processing information.
 対応処理情報とは、通信制御装置100に実行させる処理を指示する情報である。対応処理情報は、パケットの複製指示、通信経路変更指示の少なくともいずれかを含む。 Corresponding process information is information that instructs the communication control apparatus 100 to execute a process. The correspondence processing information includes at least one of a packet duplication instruction and a communication path change instruction.
 本実施形態に係るサーバ装置500においては、重大な警報に対応する警報対象エリア情報が、参照情報に含まれるエリア情報に対応するか否かを判断する。サーバ制御部503は、重大な警報に対応する警報対象エリア情報が、参照情報に含まれるエリア情報に対応する場合、エリア情報に対応する場所に配置された、通信制御装置100に、制御情報を送信する。 In the server device 500 according to the present embodiment, it is determined whether or not the alarm target area information corresponding to a serious alarm corresponds to the area information included in the reference information. When the alarm target area information corresponding to the serious alarm corresponds to the area information included in the reference information, the server control unit 503 sends the control information to the communication control device 100 arranged at the location corresponding to the area information. Send.
 本実施形態に係る通信制御部104は、制御情報の受信の有無に関する、受信ステータス(受信状態)を管理する。具体的には、本実施形態に係る通信制御部104は、制御情報の受信ステータスとして、「受信」の状態又は「未受信」の状態を管理する。本実施形態に係る通信制御部104は、制御情報を受信した場合、制御情報の受信ステータスを、「受信」の状態に設定する。一方、本実施形態に係る通信制御部104は、制御情報を受信していない場合、制御情報の受信ステータスを、「未受信」の状態に設定する。 The communication control unit 104 according to the present embodiment manages the reception status (reception state) regarding whether or not control information is received. Specifically, the communication control unit 104 according to the present embodiment manages a “reception” state or a “not received” state as the reception status of the control information. When receiving the control information, the communication control unit 104 according to the present embodiment sets the reception status of the control information to the “reception” state. On the other hand, when the control information is not received, the communication control unit 104 according to the present embodiment sets the reception status of the control information to a “not received” state.
 次に、本実施形態に係る通信システム1aの動作について詳細に説明する。 Next, the operation of the communication system 1a according to this embodiment will be described in detail.
 図8は、本実施形態に係るサーバ装置500の動作の一例を示すフローチャートである。 FIG. 8 is a flowchart showing an example of the operation of the server device 500 according to the present embodiment.
 ステップS101において、重大な警報を受信したか否かを、警報受信部502は判断する。具体的には、重大な警報の受信ステータスが、「受信」の状態である場合には、警報受信部502は、重大な警報を受信したと判断する。一方、重大な警報の受信ステータスが、「未受信」の状態である場合には、警報受信部502は、重大な警報を受信していないと判断する。 In step S101, the alarm receiving unit 502 determines whether or not a serious alarm has been received. Specifically, when the reception status of the serious alarm is “reception”, the alarm reception unit 502 determines that a serious alarm has been received. On the other hand, when the reception status of the serious alarm is “not received”, the alarm reception unit 502 determines that no serious alarm has been received.
 警報受信部502が重大な警報を受信した場合(ステップS101のYes分岐)には、警報受信部502は、重大な警報の解除通知を受信したか否かを、警報受信部502は判断する(ステップS102)。一方、警報受信部502が重大な警報を受信していない場合(ステップS101のNo分岐)には、サーバ装置500は、ステップS101に戻り、処理を継続する。 When the alarm receiving unit 502 receives a serious alarm (Yes branch in step S101), the alarm receiving unit 502 determines whether or not a serious alarm release notification is received ( Step S102). On the other hand, if the alarm receiving unit 502 has not received a serious alarm (No branch in step S101), the server device 500 returns to step S101 and continues the process.
 警報受信部502が重大な警報の解除通知を受信していない場合(ステップS102のNo分岐)には、登録されたエリア情報と、警報対象エリア情報とが対応するか否かを、サーバ制御部503は判断する(ステップS106)。具体的には、警報対象エリア情報が、サーバ記憶部501に登録されたエリア情報に対応するか否かを、サーバ制御部503は判断する。ここで、登録されたエリア情報とは、サーバ記憶部501が管理する参照情報に含まれる、エリア情報を意味する。 If the alarm receiving unit 502 has not received a serious alarm release notification (No branch in step S102), the server control unit determines whether the registered area information corresponds to the alarm target area information. In step S106, the determination is made. Specifically, the server control unit 503 determines whether or not the alarm target area information corresponds to area information registered in the server storage unit 501. Here, the registered area information means area information included in the reference information managed by the server storage unit 501.
 一方、警報受信部502が重大な警報の解除通知を受信した場合(ステップS102のYes分岐)には、サーバ制御部503は、重大な警報の解除通知を、通信制御装置100に送信する(ステップS103)。当該通信制御装置100は、重大な警報の解除通知を受信する(ステップS104)。そして、警報受信部502は、重大な警報の受信ステータスを「未受信」の状態に変更する(ステップS105)。そして、サーバ装置500は、ステップS101に戻り、処理を継続する。なお、サーバ制御部503は、サーバ装置500が接続する通信制御装置100に、エリア情報を付して重大な警報の解除通知を送信してもよいし、解除された警報の警報対象エリアの通信制御装置100を選択して、重大な警報の解除通知を送信してもよい。 On the other hand, when the alarm receiving unit 502 receives a notification of canceling a serious alarm (Yes branch in step S102), the server control unit 503 transmits a notification of canceling a serious alarm to the communication control device 100 (step S102). S103). The communication control apparatus 100 receives a serious alarm release notification (step S104). Then, the alarm receiving unit 502 changes the reception status of a serious alarm to a “not received” state (step S105). And the server apparatus 500 returns to step S101 and continues a process. Note that the server control unit 503 may transmit a serious alarm release notification with area information to the communication control apparatus 100 to which the server apparatus 500 is connected, or communication of the alarm target area of the released alarm. The control device 100 may be selected to send a notification of cancellation of a serious alarm.
 登録されたエリア情報と、警報対象エリア情報とが対応する場合(ステップS106のYes分岐)には、サーバ制御部503は、警報対象エリア情報に対応する、エリア内の通信制御装置100に、制御情報を送信する(ステップS107)。そして、当該通信制御装置100は、制御情報を受信する(ステップS108)。一方、登録されたエリア情報と、警報対象エリア情報とが対応しない場合(ステップS106のNo分岐)には、サーバ装置500は、ステップS101に戻り、処理を継続する。 When the registered area information corresponds to the alarm target area information (Yes branch in step S106), the server control unit 503 controls the communication control device 100 in the area corresponding to the alarm target area information. Information is transmitted (step S107). And the said communication control apparatus 100 receives control information (step S108). On the other hand, when the registered area information does not correspond to the alarm target area information (No branch in step S106), the server apparatus 500 returns to step S101 and continues the process.
 図9は、本実施形態に係るサーバ記憶部501が記憶する、参照情報の一例を示す図である。以下、図9を参照しながら、本実施形態に係るサーバ制御部503の処理の一例について説明する。例えば、サーバ記憶部501は、エリア情報「エリアA」と、通信制御装置「通信制御装置100a」とを対応付けた、参照情報を記憶するとする。さらに、サーバ記憶部501は、エリア情報「エリアB」と、通信制御装置「通信制御装置100b」とを対応付けた、参照情報を記憶するとする。さらに、サーバ記憶部501は、エリア情報「エリアC」と、通信制御装置「通信制御装置100c、通信制御装置100d」とを対応付けた、参照情報を記憶するとする。 FIG. 9 is a diagram illustrating an example of reference information stored in the server storage unit 501 according to the present embodiment. Hereinafter, an example of processing of the server control unit 503 according to the present embodiment will be described with reference to FIG. For example, it is assumed that the server storage unit 501 stores reference information in which area information “area A” is associated with a communication control device “communication control device 100a”. Further, it is assumed that the server storage unit 501 stores the reference information in which the area information “area B” is associated with the communication control device “communication control device 100 b”. Further, it is assumed that the server storage unit 501 stores the reference information in which the area information “area C” and the communication control devices “communication control device 100 c and communication control device 100 d” are associated with each other.
 そして、警報受信部502が、警報対象エリア情報「エリアA」を示す、重大な警報を受信したとする。その場合、警報対象エリア情報(「エリアA」)が、サーバ記憶部501に登録された、参照情報に対応する、とサーバ制御部503は判断する。そして、サーバ制御部503は、「エリアA」に対応する通信制御装置100aに、制御情報を送信する。そして、「エリアA」に対応する通信制御装置100aは、制御情報を受信する。 Then, it is assumed that the alarm receiving unit 502 receives a serious alarm indicating the alarm target area information “Area A”. In that case, the server control unit 503 determines that the alarm target area information (“area A”) corresponds to the reference information registered in the server storage unit 501. Then, the server control unit 503 transmits control information to the communication control device 100a corresponding to “Area A”. Then, the communication control device 100a corresponding to “Area A” receives the control information.
 次に、図10を参照しながら、本実施形態に係る通信制御装置100の動作について、詳細に説明する。以下の説明では、制御情報が、対応処理情報「パケットの複製指示」を含む場合を例示して説明する。 Next, the operation of the communication control apparatus 100 according to the present embodiment will be described in detail with reference to FIG. In the following description, a case where the control information includes corresponding processing information “packet duplication instruction” will be described as an example.
 ステップS110において、通信制御装置100は、通信の優先度を設定する。具体的には、通信の内容(種類)と、優先度とを対応付けた情報を、記憶部101に登録(記憶)する。 In step S110, the communication control apparatus 100 sets communication priority. Specifically, information that associates the content (type) of communication with the priority is registered (stored) in the storage unit 101.
 ステップS111において、制御情報を受信したか否かを、通信制御部104は判断する。具体的には、制御情報の受信ステータスが、「受信」の状態である場合には、通信制御部104は、制御情報を受信したと判断する。一方、制御情報の受信ステータスが、「未受信」の状態である場合には、通信制御部104は、制御情報を受信していないと判断する。通信制御装置100が制御情報を受信した場合(ステップS111のYes分岐)には、重大な警報の解除通知を受信したか否かを、通信制御部104は判断する(ステップS112)。 In step S111, the communication control unit 104 determines whether control information has been received. Specifically, when the reception status of the control information is “reception”, the communication control unit 104 determines that the control information has been received. On the other hand, when the reception status of the control information is “not received”, the communication control unit 104 determines that the control information has not been received. When the communication control apparatus 100 receives the control information (Yes branch in step S111), the communication control unit 104 determines whether or not a serious alarm release notification has been received (step S112).
 重大な警報の解除通知を受信していない場合(ステップS112のNo分岐)には、通信部102は、LANからパケットを受信したか否かを判断する(ステップS114)。 If no serious alarm release notification has been received (No branch in step S112), the communication unit 102 determines whether a packet has been received from the LAN (step S114).
 一方、通信制御装置100が重大な警報の解除通知を受信した場合(ステップS112のYes分岐)には、通信制御部104は、制御情報の受信ステータスを「未受信」の状態に変更する(ステップS113)。そして、通信部102は、LANからパケットを受信したか否かを判断する(ステップS122)。 On the other hand, when the communication control apparatus 100 receives a notification of cancellation of a serious alarm (Yes branch of step S112), the communication control unit 104 changes the reception status of the control information to a “not received” state (step S112). S113). And the communication part 102 judges whether the packet was received from LAN (step S122).
 制御情報がパケットの複製指示を含む場合、ステップS114~ステップS121までの処理は、図4に示すステップS5~ステップS12までの処理と同じであるため、詳細な説明は省略する。通信制御部104が、決定した通信経路を経由して、パケットを転送すると(ステップS121)、通信制御装置100は、ステップS111に戻り、処理を継続する。 When the control information includes a packet duplication instruction, the processing from step S114 to step S121 is the same as the processing from step S5 to step S12 shown in FIG. When the communication control unit 104 transfers the packet via the determined communication path (step S121), the communication control apparatus 100 returns to step S111 and continues the process.
 一方、通信制御装置100が制御情報を受信していない場合(ステップS111のNo分岐)には、通信部102は、LANからパケットを受信したか否かを判断する(ステップS122)。ステップS122~ステップS124の処理は、図4に示すステップS13~S15の処理と同じであるため詳細な説明は省略する。通信制御部104が、決定した通信経路を経由して、パケットを転送すると(ステップS124)、通信制御装置100は、ステップS111に戻り、処理を継続する。 On the other hand, if the communication control apparatus 100 has not received control information (No branch in step S111), the communication unit 102 determines whether or not a packet has been received from the LAN (step S122). Since the processing in steps S122 to S124 is the same as the processing in steps S13 to S15 shown in FIG. 4, detailed description thereof is omitted. When the communication control unit 104 transfers the packet via the determined communication path (step S124), the communication control apparatus 100 returns to step S111 and continues the process.
 図11は、通信制御装置100がWANからパケットを受信した場合の動作の一例を示す図である。図11に示すステップS131からS133までの処理は、図5に示すステップS21~ステップS24までの処理と同じであるため、詳細な説明は省略する。通信制御部104が、複製されたパケットを破棄する(ステップS133)と、通信制御装置100は、図10に示すステップS111に戻り、処理を継続する。また、通信制御部104が、受信したパケットを、LANを経由して転送する(ステップS134)と、通信制御装置100は、図10に示すステップS111に戻り、処理を継続する。 FIG. 11 is a diagram illustrating an example of an operation when the communication control apparatus 100 receives a packet from the WAN. Since the processing from step S131 to step S133 shown in FIG. 11 is the same as the processing from step S21 to step S24 shown in FIG. 5, detailed description thereof is omitted. When the communication control unit 104 discards the copied packet (step S133), the communication control apparatus 100 returns to step S111 shown in FIG. 10 and continues the process. When the communication control unit 104 transfers the received packet via the LAN (step S134), the communication control apparatus 100 returns to step S111 shown in FIG. 10 and continues the process.
 以上のように、本実施形態に係る通信システム1aにおいては、サーバ装置500が、重大な警報を受信した場合、受信した警報に対応する場所の通信制御装置100に、制御情報を送信する。本実施形態に係る通信制御装置100は、受信した制御情報に応じて、受信したパケットに対して処理を行うとともに、通信経路を決定する。従って、本実施形態に係る通信システム1aは、重大な警報に対応する事象が発生した場合であっても、当該警報に対応するエリアにおいて、必要な通信を安定的且つ効率的に行うことに貢献する。よって、本実施形態に係る通信システム1aは、エリア毎の状況に応じて、必要な通信を安定的且つ効率的に行うことに貢献する。 As described above, in the communication system 1a according to the present embodiment, when the server apparatus 500 receives a serious alarm, the server apparatus 500 transmits control information to the communication control apparatus 100 at a location corresponding to the received alarm. The communication control apparatus 100 according to the present embodiment performs processing on the received packet and determines a communication path according to the received control information. Accordingly, the communication system 1a according to the present embodiment contributes to performing necessary communication stably and efficiently in an area corresponding to the alarm even when an event corresponding to a serious alarm occurs. To do. Therefore, the communication system 1a according to the present embodiment contributes to performing necessary communication stably and efficiently according to the situation for each area.
 例えば、サーバ装置500が、重大な警報を受信後、相対的に通信品質の高い通信経路(第1のWAN300の通信経路)に障害が発生したとする。本実施形態に係る通信システム1aにおいて、サーバ装置500が、重大な警報を受信した場合、サーバ装置500は、当該警報に対応するエリア内の通信制御装置100に、優先度の高い通信に関して、パケットを複製し、複数の通信経路を経由してパケットを転送するように指示する。そのため、本実施形態に係る通信システム1aにおいては、相対的に通信品質の高い通信経路に、障害が発生した場合であっても、相対的に通信品質の低い通信経路を介して、拠点間の通信を継続することができる。従って、本実施形態に係る通信システム1aは、緊急事態(例えば、災害等)が発生し、通信経路に障害が発生した場合であっても、必要な通信を安定的に行うことに貢献する。 For example, it is assumed that a failure has occurred in a communication path with relatively high communication quality (communication path of the first WAN 300) after the server apparatus 500 receives a serious alarm. In the communication system 1a according to the present embodiment, when the server device 500 receives a serious alarm, the server device 500 sends a packet regarding communication with a high priority to the communication control device 100 in the area corresponding to the alarm. Is instructed to transfer the packet via a plurality of communication paths. Therefore, in the communication system 1a according to the present embodiment, even if a failure occurs in a communication path having a relatively high communication quality, the communication between the sites is performed via the communication path having a relatively low communication quality. Communication can be continued. Therefore, the communication system 1a according to the present embodiment contributes to stably performing necessary communication even when an emergency situation (for example, a disaster or the like) occurs and a failure occurs in the communication path.
[第3の実施形態]
 次に、第3の実施形態について、図面を用いて詳細に説明する。
[Third Embodiment]
Next, a third embodiment will be described in detail with reference to the drawings.
 本実施形態は、通信制御装置とは異なるサーバ装置が、警報を受信し、警報に対応する事象に応じた処理を、通信制御装置に実行させる形態である。なお、本実施形態における説明では、上記の実施形態と重複する部分の説明は省略する。さらに、本実施形態における説明では、上記の実施形態と同一の構成要素には、同一の符号を付し、その説明を省略する。また、本実施形態における説明では、上記の実施形態と同一の作用効果についても、その説明を省略する。 In the present embodiment, a server device different from the communication control device receives an alarm and causes the communication control device to execute a process corresponding to an event corresponding to the alarm. In the description of the present embodiment, the description of the same part as the above embodiment is omitted. Further, in the description of the present embodiment, the same components as those of the above-described embodiment are denoted by the same reference numerals, and the description thereof is omitted. In the description of the present embodiment, the description of the same operational effects as those of the above-described embodiment is also omitted.
 本実施形態に係る通信システム1aの全体構成は、図6の通りであるため、詳細な説明は省略する。 Since the overall configuration of the communication system 1a according to the present embodiment is as shown in FIG. 6, detailed description thereof is omitted.
 図12は、本実施形態に係るサーバ装置500の内部構成の一例を示すブロック図である。 FIG. 12 is a block diagram illustrating an example of an internal configuration of the server device 500 according to the present embodiment.
 本実施形態に係るサーバ記憶部501は、事象情報と、対応処理情報とを対応付けた、参照情報を管理(記憶)する。 The server storage unit 501 according to the present embodiment manages (stores) reference information in which event information is associated with corresponding processing information.
 事象情報とは、事象の内容を特定する情報である。事象情報は、「地震」、「大雨」等、事象を特定可能な情報であれば、その詳細は問わない。 Event information is information that identifies the content of an event. The details of the event information are not particularly limited as long as the information can identify the event, such as “earthquake” and “heavy rain”.
 対応処理情報とは、事象に対して、実行される処理に関する情報である。例えば、サーバ記憶部501は、事象情報「大雨」と、対応処理情報「パケットの複製指示」とを対応付けて管理してもよい。また、サーバ記憶部501は、事象情報「地震」と、対応処理情報「通信経路変更指示」とを対応付けて管理してもよい。 Corresponding processing information is information related to processing executed for an event. For example, the server storage unit 501 may manage the event information “heavy rain” and the corresponding processing information “packet duplication instruction” in association with each other. Further, the server storage unit 501 may manage the event information “earthquake” and the corresponding processing information “communication path change instruction” in association with each other.
 本実施形態に係る警報受信部502が受信する警報(重大な警報)は、警報対象事象情報を含む。 The alarm (serious alarm) received by the alarm receiver 502 according to the present embodiment includes alarm target event information.
 警報対象事象情報とは、警報に対応する、事象を特定する情報である。例えば、警報受信部502が受信した警報に関して、警報対象事象情報が、「大雨」である場合、当該警報は、大雨が発生したことを示すものである。 Alert target event information is information that identifies an event corresponding to an alarm. For example, regarding the alarm received by the alarm receiving unit 502, when the alarm target event information is “heavy rain”, the alarm indicates that heavy rain has occurred.
 本実施形態に係るサーバ制御部503は、警報受信部502が受信した、警報に対応する警報対象事象情報が、参照情報に含まれる事象情報に対応する場合、通信制御装置100に制御情報を送信する。具体的には、本実施形態に係るサーバ装置500においては、警報受信部502が受信した、重大な警報に対応する警報対象事象情報が、参照情報に含まれる事象情報に対応する場合、サーバ装置500が接続する通信制御装置100に、制御情報を送信する。制御情報は、パケットの複製指示、通信経路変更指示の少なくともいずれかを含む。 The server control unit 503 according to the present embodiment transmits control information to the communication control apparatus 100 when the alarm target event information corresponding to the alarm received by the alarm receiving unit 502 corresponds to the event information included in the reference information. To do. Specifically, in the server device 500 according to the present embodiment, when alarm target event information corresponding to a serious alarm received by the alarm receiving unit 502 corresponds to event information included in the reference information, the server device Control information is transmitted to the communication control apparatus 100 to which 500 is connected. The control information includes at least one of a packet duplication instruction and a communication path change instruction.
 次に、本実施形態に係る通信システム1aの動作について詳細に説明する。 Next, the operation of the communication system 1a according to this embodiment will be described in detail.
 図13は、本実施形態に係るサーバ装置500の動作の一例を示すフローチャートである。 FIG. 13 is a flowchart showing an example of the operation of the server device 500 according to the present embodiment.
 ステップS201において、重大な警報を受信したか否かを、警報受信部502は判断する。具体的には、重大な警報の受信ステータスが、「受信」の状態である場合には、警報受信部502は、重大な警報を受信したと判断する。一方、重大な警報の受信ステータスが、「未受信」の状態である場合には、警報受信部502は、重大な警報を受信していないと判断する。 In step S201, the alarm receiving unit 502 determines whether or not a serious alarm has been received. Specifically, when the reception status of the serious alarm is “reception”, the alarm reception unit 502 determines that a serious alarm has been received. On the other hand, when the reception status of the serious alarm is “not received”, the alarm reception unit 502 determines that no serious alarm has been received.
 警報受信部502が重大な警報を受信した場合(ステップS201のYes分岐)には、警報受信部502は、重大な警報の解除通知を受信したか否かを判断する(ステップS202)。一方、警報受信部502が重大な警報を受信していない場合(ステップS201のNo分岐)には、通信制御装置100は、ステップS201に戻り、処理を継続する。 When the alarm receiving unit 502 receives a serious alarm (Yes branch of step S201), the alarm receiving unit 502 determines whether or not a serious alarm release notification has been received (step S202). On the other hand, when the alarm receiving unit 502 has not received a serious alarm (No branch in step S201), the communication control apparatus 100 returns to step S201 and continues the process.
 重大な警報の解除通知を受信した場合(ステップS202のYes分岐)には、サーバ制御部503は、重大な警報の解除通知を、通信制御装置100に送信する(ステップS203)。当該通信制御装置100は、重大な警報の解除通知を受信する(ステップS204)。そして、警報受信部502は、重大な警報の受信ステータスを「未受信」の状態に変更する(ステップS205)。そして、通信制御装置100は、ステップS201に戻り、処理を継続する。 When a serious alarm cancellation notification is received (Yes branch of step S202), the server control unit 503 transmits a critical alarm cancellation notification to the communication control apparatus 100 (step S203). The communication control apparatus 100 receives a serious alarm release notification (step S204). Then, the alarm receiving unit 502 changes the reception status of a serious alarm to a “not received” state (step S205). And the communication control apparatus 100 returns to step S201, and continues a process.
 重大な警報の解除通知を受信していない場合(ステップS202のNo分岐)には、登録された事象情報と、警報対象事象情報とが対応するか否かを、サーバ制御部503は判断する(ステップS206)。具体的には、警報対象事象情報が、サーバ記憶部501に登録された事象情報に対応するか否かを、サーバ制御部503は判断する。ここで、登録された事象情報とは、サーバ記憶部501が管理する参照情報に含まれる、事象情報を意味する。 If a serious alarm release notification has not been received (No branch in step S202), the server control unit 503 determines whether or not the registered event information corresponds to the alarm target event information ( Step S206). Specifically, the server control unit 503 determines whether the alarm target event information corresponds to the event information registered in the server storage unit 501. Here, the registered event information means event information included in the reference information managed by the server storage unit 501.
 登録された事象情報と、警報対象事象情報とが対応しない場合(ステップS206のNo分岐)には、通信制御装置100は、ステップS201に戻り、処理を継続する。 If the registered event information does not correspond to the alarm target event information (No branch in step S206), the communication control device 100 returns to step S201 and continues the process.
 一方、登録された事象情報と、警報対象事象情報とが対応する場合(ステップS206のYes分岐)には、サーバ制御部503は、警報対象事象情報に対応する、対応処理情報を含む、制御情報を生成する(ステップS207)。ステップS208において、サーバ制御部503は、サーバ装置500が接続する通信制御装置100に、制御情報を送信する。そして、当該通信制御装置100は、制御情報を受信する(ステップS209)。 On the other hand, when the registered event information corresponds to the alarm target event information (Yes branch in step S206), the server control unit 503 includes control processing information corresponding to the alarm target event information. Is generated (step S207). In step S208, the server control unit 503 transmits control information to the communication control apparatus 100 to which the server apparatus 500 is connected. And the said communication control apparatus 100 receives control information (step S209).
 図14は、本実施形態に係るサーバ記憶部501が記憶する、参照情報の一例を示す図である。以下、図14を参照しながら、サーバ制御部503の処理の一例について説明する。例えば、サーバ記憶部501は、図14に示すように、事象情報「事象P」と、対応処理情報「対応処理X」とを対応付けた、参照情報を記憶するとする。さらに、サーバ記憶部501は、事象情報「事象Q」と、対応処理情報「対応処理Y」とを対応付けた、参照情報を記憶するとする。そして、警報受信部502が、警報対象事象情報「事象P」を示す、重大な警報を受信したとする。その場合、警報対象事象情報(「事象P」)が、サーバ記憶部501に登録された、参照情報に対応する、とサーバ制御部503は判断する。そして、サーバ制御部503は、警報対象事象情報(「事象P」)に対応する、対応処理情報(「対応処理X」)を含む、制御情報を生成する。 FIG. 14 is a diagram illustrating an example of reference information stored in the server storage unit 501 according to the present embodiment. Hereinafter, an example of processing of the server control unit 503 will be described with reference to FIG. For example, as illustrated in FIG. 14, the server storage unit 501 stores reference information in which event information “event P” is associated with corresponding processing information “corresponding processing X”. Further, it is assumed that the server storage unit 501 stores the reference information in which the event information “event Q” is associated with the corresponding processing information “corresponding processing Y”. Then, it is assumed that the alarm receiving unit 502 receives a serious alarm indicating the alarm target event information “event P”. In that case, the server control unit 503 determines that the alarm target event information (“event P”) corresponds to the reference information registered in the server storage unit 501. Then, the server control unit 503 generates control information including corresponding processing information (“corresponding processing X”) corresponding to the alarm target event information (“event P”).
 そして、サーバ制御部503は、対応処理情報(「対応処理X」)を含む、制御情報を、通信制御装置100に送信する。通信制御装置100は、対応処理情報(「対応処理X」)を含む、制御情報を受信する。 Then, the server control unit 503 transmits control information including corresponding process information (“corresponding process X”) to the communication control apparatus 100. The communication control apparatus 100 receives control information including response processing information (“response processing X”).
 制御情報が、対応処理情報「パケットの複製指示」を含む場合、本実施形態に係る通信制御装置100の動作は、図10に示すとおりである。本実施形態に係る通信制御装置100の動作の詳細について、詳細な説明は省略する。 When the control information includes the corresponding processing information “packet duplication instruction”, the operation of the communication control apparatus 100 according to the present embodiment is as shown in FIG. Detailed description of the operation of the communication control apparatus 100 according to the present embodiment is omitted.
 また、対応処理情報は、「対応なし」であってもよい。例えば、サーバ記憶部501は、事象情報「事象R」と、対応処理情報「対応なし」とを対応付けた、参照情報を記憶するとする。そして、警報受信部502が、警報対象事象情報「事象R」を示す、重大な警報を受信したとする。その場合、警報対象事象情報(「事象R」)が、サーバ記憶部501に登録された、事情情報に対応する、とサーバ制御部503は判断する。その場合、サーバ制御部503は、サーバ記憶部501を参照し、警報対象事象情報(「事象R」)に対応する、対応処理情報は、「対応なし」である、と判断する。その場合、サーバ制御部503は、制御情報を生成せず、ステップ201に戻り、処理を継続する。 Also, the correspondence processing information may be “no correspondence”. For example, it is assumed that the server storage unit 501 stores reference information in which event information “event R” is associated with corresponding processing information “not supported”. Then, it is assumed that the alarm receiving unit 502 receives a serious alarm indicating the alarm target event information “event R”. In that case, the server control unit 503 determines that the alarm target event information (“event R”) corresponds to the circumstance information registered in the server storage unit 501. In that case, the server control unit 503 refers to the server storage unit 501, and determines that the corresponding processing information corresponding to the alarm target event information (“event R”) is “no response”. In this case, the server control unit 503 does not generate control information, returns to step 201, and continues processing.
 以上のように、本実施形態に係る通信システム1aにおいては、サーバ装置500が、重大な警報を受信した場合、警報に対応する事象に応じて、通信制御装置100に実行させる処理を、通信制御装置100に指示する。そして、本実施形態に係る通信制御装置100は、サーバ装置500からの指示に応じて、受信したパケットに対して処理を行うとともに、通信経路を決定する。従って、本実施形態に係る通信システム1aは、重大な警報に対応する事象に応じて、適切な処理を実行することに貢献する。それにより、本実施形態に係る通信システム1aは、重大な警報に対応する事象が発生した場合であっても、適切な処理を実行し、必要な通信を安定的に行うことに貢献する。よって、本実施形態に係る通信システム1aは、より一層、状況に応じて、必要な通信を安定的且つ効率的に行うことに貢献する。 As described above, in the communication system 1a according to the present embodiment, when the server device 500 receives a serious alarm, the communication control device 100 performs a process to be executed by the communication control device 100 according to an event corresponding to the alarm. Instruct the device 100. Then, the communication control apparatus 100 according to the present embodiment performs processing on the received packet and determines a communication path in response to an instruction from the server apparatus 500. Therefore, the communication system 1a according to the present embodiment contributes to executing an appropriate process according to an event corresponding to a serious alarm. Thereby, the communication system 1a according to the present embodiment contributes to the stable execution of necessary communication by executing appropriate processing even when an event corresponding to a serious alarm occurs. Therefore, the communication system 1a according to the present embodiment further contributes to performing necessary communication stably and efficiently according to the situation.
[第4の実施形態]
 次に、第4の実施形態について、図面を用いて詳細に説明する。
[Fourth Embodiment]
Next, a fourth embodiment will be described in detail with reference to the drawings.
 本実施形態は、通信制御装置とは異なるサーバ装置が、警報を受信し、警報に対応するエリアの通信制御装置に、警報に対応する事象に応じた処理を実行させる形態である。なお、本実施形態における説明では、上記の実施形態と重複する部分の説明は省略する。さらに、本実施形態における説明では、上記の実施形態と同一の構成要素には、同一の符号を付し、その説明を省略する。また、本実施形態における説明では、上記の実施形態と同一の作用効果についても、その説明を省略する。 In the present embodiment, a server device different from the communication control device receives an alarm, and causes the communication control device in an area corresponding to the alarm to execute processing corresponding to the event corresponding to the alarm. In the description of the present embodiment, the description of the same part as the above embodiment is omitted. Further, in the description of the present embodiment, the same components as those of the above-described embodiment are denoted by the same reference numerals, and the description thereof is omitted. In the description of the present embodiment, the description of the same operational effects as those of the above-described embodiment is also omitted.
 本実施形態に係る通信システム1aの全体構成は、図6の通りであるため、詳細な説明は省略する。 Since the overall configuration of the communication system 1a according to the present embodiment is as shown in FIG. 6, detailed description thereof is omitted.
 図15は、本実施形態に係るサーバ装置500の内部構成の一例を示すブロック図である。 FIG. 15 is a block diagram illustrating an example of an internal configuration of the server device 500 according to the present embodiment.
 本実施形態に係るサーバ記憶部501は、エリア情報と、事象情報と、対応処理情報とを対応付けた、参照情報を管理する。 The server storage unit 501 according to the present embodiment manages reference information in which area information, event information, and correspondence processing information are associated with each other.
 本実施形態に係る警報受信部502が受信する警報(重大な警報)は、警報に対応する、警報対象エリア情報と警報対象事象情報とを含む。 The alarm (serious alarm) received by the alarm receiver 502 according to the present embodiment includes alarm target area information and alarm target event information corresponding to the alarm.
 本実施形態に係る通信システム1aにおいて、警報対象事象情報が参照情報に含まれる事象情報に対応する場合であって、前記警報対象エリア情報が参照情報に含まれるエリア情報に対応する場合であるとする。その場合、本実施形態に係るサーバ制御部503は、エリア情報に対応する場所に配置された通信制御装置に、対応処理情報を含む、制御情報を送信する。 In the communication system 1a according to the present embodiment, the alarm target event information corresponds to the event information included in the reference information, and the alarm target area information corresponds to the area information included in the reference information. To do. In that case, the server control unit 503 according to the present embodiment transmits control information including correspondence processing information to the communication control device arranged at a location corresponding to the area information.
 次に、本実施形態に係る通信システム1aの動作について詳細に説明する。 Next, the operation of the communication system 1a according to this embodiment will be described in detail.
 図16は、本実施形態に係るサーバ装置500の動作の一例を示すフローチャートである。 FIG. 16 is a flowchart showing an example of the operation of the server device 500 according to the present embodiment.
 ステップS301において、重大な警報を受信したか否かを、警報受信部502は判断する。具体的には、重大な警報の受信ステータスが、「受信」の状態である場合には、警報受信部502は、重大な警報を受信したと判断する。一方、重大な警報の受信ステータスが、「未受信」の状態である場合には、警報受信部502は、重大な警報を受信していないと判断する。 In step S301, the alarm receiving unit 502 determines whether or not a serious alarm has been received. Specifically, when the reception status of the serious alarm is “reception”, the alarm reception unit 502 determines that a serious alarm has been received. On the other hand, when the reception status of the serious alarm is “not received”, the alarm reception unit 502 determines that no serious alarm has been received.
 警報受信部502が重大な警報を受信していない場合(ステップS301のNo分岐)には、ステップS301に戻り、処理を継続する。警報受信部502が重大な警報を受信した場合(ステップS301のYes分岐)には、重大な警報の解除通知を受信したか否かを、警報受信部502は判断する(ステップS302)。 If the alarm receiving unit 502 has not received a serious alarm (No branch in step S301), the process returns to step S301 and the process is continued. When the alarm receiving unit 502 receives a serious alarm (Yes branch in step S301), the alarm receiving unit 502 determines whether or not a serious alarm release notification has been received (step S302).
 重大な警報の解除通知を受信した場合(ステップS302のYes分岐)には、サーバ制御部503は、重大な警報の解除通知を、通信制御装置100に送信する(ステップS303)。当該通信制御装置100は、重大な警報の解除通知を受信する(ステップS304)。そして、警報受信部502は、重大な警報の受信ステータスを「未受信」の状態に変更する(ステップS305)。そして、サーバ装置500は、ステップS301に戻り、処理を継続する。なお、サーバ制御部503は、サーバ装置500が接続する通信制御装置100に、エリア情報を付して重大な警報の解除通知を送信してもよいし、解除された警報の警報対象エリアの通信制御装置100を選択して、重大な警報の解除通知を送信してもよい。 If a serious alarm release notification is received (Yes in step S302), the server control unit 503 transmits a serious alarm release notification to the communication control device 100 (step S303). The communication control apparatus 100 receives a serious alarm release notification (step S304). Then, the alarm receiving unit 502 changes the reception status of a serious alarm to a “not received” state (step S305). And the server apparatus 500 returns to step S301 and continues a process. Note that the server control unit 503 may transmit a serious alarm release notification with area information to the communication control apparatus 100 to which the server apparatus 500 is connected, or communication of the alarm target area of the released alarm. The control device 100 may be selected to send a notification of cancellation of a serious alarm.
 一方、重大な警報の解除通知を受信していない場合(ステップS302のNo分岐)には、登録されたエリア情報と事象情報とが、警報対象エリア情報と警報対象事象情報とに対応するか否かを、サーバ制御部503は判断する(ステップS306)。 On the other hand, if no serious alarm release notification has been received (No branch in step S302), whether the registered area information and event information correspond to the alarm target area information and the alarm target event information or not. The server control unit 503 determines whether or not (step S306).
 登録されたエリア情報と事象情報とが、警報対象エリア情報と警報対象事象情報とに対応しない場合(ステップS306のNo分岐)には、サーバ装置500は、ステップS301に戻り、処理を継続する。 When the registered area information and event information do not correspond to the alarm target area information and the alarm target event information (No branch in step S306), the server device 500 returns to step S301 and continues the process.
 一方、登録されたエリア情報と事象情報とが、警報対象エリア情報と警報対象事象情報とに対応する場合(ステップS306のYes分岐)には、サーバ制御部503は、警報対象事象情報に対応する、対応処理情報を含む、制御情報を生成する(ステップS307)。ステップS308において、サーバ制御部503は、警報対象エリア情報に対応するエリア内の通信制御装置に、制御情報を送信する。そして、当該通信制御装置100は、制御情報を受信する(ステップS309)。 On the other hand, when the registered area information and event information correspond to the alarm target area information and the alarm target event information (Yes branch in step S306), the server control unit 503 corresponds to the alarm target event information. Then, control information including correspondence processing information is generated (step S307). In step S308, the server control unit 503 transmits control information to the communication control device in the area corresponding to the alarm target area information. And the said communication control apparatus 100 receives control information (step S309).
 図17は、本実施形態に係るサーバ記憶部501が記憶する、参照情報の一例を示す図である。以下、図17を参照しながら、本実施形態に係るサーバ制御部503の処理の一例について説明する。例えば、サーバ記憶部501は、エリア情報「エリアA」と、事象情報「事象P」と、対応処理情報「対応処理X」と、通信制御装置「通信制御装置100a」を対応付けた、参照情報を管理するとする。さらに、サーバ記憶部501は、エリア情報「エリアB」と、事象情報「事象Q」と、対応処理情報「対応処理Y」と、通信制御装置「通信制御装置100b」とを対応付けた、参照情報を管理するとする。 FIG. 17 is a diagram illustrating an example of reference information stored in the server storage unit 501 according to the present embodiment. Hereinafter, an example of processing of the server control unit 503 according to the present embodiment will be described with reference to FIG. For example, the server storage unit 501 associates area information “area A”, event information “event P”, response processing information “response processing X”, and communication control device “communication control device 100a”. Suppose you manage. Further, the server storage unit 501 associates the area information “area B”, the event information “event Q”, the response processing information “response processing Y”, and the communication control device “communication control device 100b”. Suppose you manage information.
 ここで、例えば、警報受信部502が、警報対象エリア情報「エリアA」と、警報対象事象情報「事象P」とを示す、重大な警報を受信したとする。その場合、警報対象エリア情報「エリアA」と、警報対象事象情報「事象P」とが、サーバ記憶部501に登録された参照情報に対応する、とサーバ制御部503は判断する。そして、サーバ制御部503は、警報対象事象情報(「事象P」)に対応する、対応処理情報(「対応処理X」)を含む、制御情報を生成する。そして、サーバ制御部503は、「エリアA」に対応する通信制御装置100aに、制御情報を送信する。そして、「エリアA」に対応する通信制御装置100aは、制御情報を受信する。 Here, for example, it is assumed that the alarm receiving unit 502 receives a serious alarm indicating the alarm target area information “area A” and the alarm target event information “event P”. In that case, the server control unit 503 determines that the alarm target area information “area A” and the alarm target event information “event P” correspond to the reference information registered in the server storage unit 501. Then, the server control unit 503 generates control information including corresponding processing information (“corresponding processing X”) corresponding to the alarm target event information (“event P”). Then, the server control unit 503 transmits control information to the communication control device 100a corresponding to “Area A”. Then, the communication control device 100a corresponding to “Area A” receives the control information.
 また、例えば、警報受信部502が、警報対象エリア情報「エリアA」と、警報対象事象情報「事象Q」とを示す、重大な警報を受信したとする。その場合、警報対象エリア情報「エリアA」と、警報対象事象情報「事象Q」とが、サーバ記憶部501に登録された参照情報に対応しない、とサーバ制御部503は判断する。その場合、サーバ制御部503は、制御情報を生成せず、ステップS301に戻り、処理を継続する。 Further, for example, it is assumed that the alarm receiving unit 502 receives a serious alarm indicating the alarm target area information “area A” and the alarm target event information “event Q”. In that case, the server control unit 503 determines that the alarm target area information “area A” and the alarm target event information “event Q” do not correspond to the reference information registered in the server storage unit 501. In that case, the server control unit 503 does not generate control information, returns to step S301, and continues the process.
 以上のように、本実施形態に係る通信システム1aにおいては、サーバ装置500が重大な警報を受信した場合、警報に対応する事象に応じて、受信した警報に対応する場所の通信制御装置100に、制御情報を送信する。そして、本実施形態に係る通信制御装置100は、サーバ装置500からの指示に応じて、受信したパケットに対して処理を行うとともに、通信経路を決定する。従って、本実施形態に係る通信システム1aは、重大な警報に対応する事象に応じて、当該警報に対応するエリアにおいて、適切な処理を実行し、必要な通信を安定的に行うことに貢献する。よって、本実施形態に係る通信システム1aは、より一層、エリア毎の状況に応じて、必要な通信を安定的且つ効率的に行うことに貢献する。 As described above, in the communication system 1a according to the present embodiment, when the server device 500 receives a serious alarm, the communication control device 100 in the location corresponding to the received alarm responds to the event corresponding to the alarm. , Send control information. Then, the communication control apparatus 100 according to the present embodiment performs processing on the received packet and determines a communication path in response to an instruction from the server apparatus 500. Therefore, the communication system 1a according to the present embodiment contributes to stably performing necessary communication by executing appropriate processing in an area corresponding to the alarm in response to an event corresponding to a serious alarm. . Therefore, the communication system 1a according to the present embodiment further contributes to performing necessary communication stably and efficiently according to the situation of each area.
 なお、上記の説明においては、サーバ装置500が、各拠点(拠点200a、200b)とは異なる場所に配置される形態について説明した。しかし、サーバ装置500が、少なくとも一の拠点内に配置され、WANと接続可能であってもよい。 In the above description, the form in which the server device 500 is arranged at a place different from each base (base 200a, 200b) has been described. However, the server device 500 may be disposed in at least one base and connectable to the WAN.
 また、上記の説明においては、サーバ記憶部501が管理するエリア情報が、エリアの名称である形態について説明した。しかし、これは、エリア情報を、エリアの名称に限定する趣旨ではない。例えば、エリア情報は、対応するエリアに含まれる、拠点内の通信制御装置を特定する情報(IPアドレス、MACアドレス等)であってもよい。例えば、警報がエリアを特定する位置情報を含む場合、サーバ記憶部501は、エリアを特定する位置情報、当該エリアに含まれる、拠点内の通信制御装置100を特定する情報と、を対応付けて管理してもよい。 In the above description, the mode in which the area information managed by the server storage unit 501 is the name of the area has been described. However, this is not intended to limit the area information to the name of the area. For example, the area information may be information (IP address, MAC address, etc.) that identifies the communication control device in the base included in the corresponding area. For example, when the alarm includes position information for specifying an area, the server storage unit 501 associates position information for specifying the area with information for specifying the communication control device 100 in the base included in the area. May be managed.
 また、サーバ記憶部501が管理するエリア情報は、対応するエリアに含まれる、2以上の拠点を特定する情報であってもよい。また、サーバ記憶部501が管理するエリア情報は、対応するエリアに含まれる、2以上の拠点の名称であってもよい。その場合、サーバ記憶部501は、対応するエリアに含まれる、当該拠点内の通信制御装置100を特定する情報と、各拠点の名称と、各拠点を特定する位置情報とを対応付けて管理してもよい。 Further, the area information managed by the server storage unit 501 may be information specifying two or more bases included in the corresponding area. Further, the area information managed by the server storage unit 501 may be names of two or more bases included in the corresponding area. In that case, the server storage unit 501 associates and manages information specifying the communication control device 100 in the base, the name of each base, and position information specifying each base included in the corresponding area. May be.
 また、上記の説明では、制御情報が、対応処理情報「パケットの複製指示」を含む形態について説明した。そして、通信制御装置100が、パケットの複製指示を含む制御情報を受信した場合には、所定の閾値を超える優先度の通信に関して、受信したパケットを複製し、複数の通信経路にパケットを転送する形態について説明した。しかし、これは、制御情報に含まれる対応処理情報を限定する趣旨ではない。対応処理情報は、通信経路変更指示であってもよい。そして、通信制御装置100は、対応処理情報「通信経路変更指示」を含む制御情報を受信した場合には、通信の優先度に応じて、通信経路を変更しても良い。 Further, in the above description, the mode in which the control information includes the corresponding processing information “packet duplication instruction” has been described. When the communication control device 100 receives control information including a packet duplication instruction, the communication control device 100 duplicates the received packet and transfers the packet to a plurality of communication paths with respect to communication having a priority exceeding a predetermined threshold. The form has been described. However, this is not intended to limit the corresponding processing information included in the control information. The correspondence processing information may be a communication path change instruction. And the communication control apparatus 100 may change a communication path according to the priority of communication, when the control information containing corresponding | compatible process information "communication path change instruction" is received.
 例えば、通信制御装置100が、対応処理情報「通信経路変更指示」を含む制御情報を受信する前には、優先度が所定の閾値を超える通信に関して、相対的に通信品質の高い通信経路(例えば、第1のWAN300)に、受信したパケットを転送するとする。さらに、通信制御装置100が、対応処理情報「通信経路変更指示」を含む制御情報を受信する前には、優先度が所定の閾値を超える通信に関して、相対的に通信品質の低い通信経路(例えば、第2のWAN400)に、受信したパケットを転送するとする。 For example, before the communication control apparatus 100 receives control information including the corresponding processing information “communication path change instruction”, a communication path with a relatively high communication quality (for example, a communication whose priority exceeds a predetermined threshold) (for example, Suppose that the received packet is transferred to the first WAN 300). Furthermore, before the communication control apparatus 100 receives control information including the corresponding processing information “communication path change instruction”, a communication path with a relatively low communication quality (for example, a communication whose priority exceeds a predetermined threshold) (for example, Assume that the received packet is transferred to the second WAN 400).
 その場合に、通信制御装置100は、対応処理情報「通信経路変更指示」を含む制御情報を受信した後には、通信の優先度に応じて、通信経路を変更しても良い。例えば、通信制御装置100は、対応処理情報「通信経路変更指示」を含む制御情報を受信した後には、優先度が所定の閾値を超える通信に関して、相対的に通信品質の低い通信経路に、受信したパケットを転送するように、通信経路を変更してもよい。さらに、通信制御装置100は、対応処理情報「通信経路変更指示」を含む制御情報を受信した後には、優先度が所定の閾値以下の通信に関して、相対的に通信品質の高い通信経路に、受信したパケットを転送するように、通信経路を変更してもよい。 In this case, the communication control apparatus 100 may change the communication path according to the priority of communication after receiving the control information including the corresponding processing information “communication path change instruction”. For example, after receiving the control information including the correspondence processing information “communication path change instruction”, the communication control apparatus 100 receives a communication path having a relatively low communication quality with respect to communication whose priority exceeds a predetermined threshold. The communication path may be changed so that the transmitted packet is transferred. Further, after receiving the control information including the corresponding processing information “communication path change instruction”, the communication control apparatus 100 receives a communication path having a relatively high communication quality with respect to a communication whose priority is equal to or lower than a predetermined threshold. The communication path may be changed so that the transmitted packet is transferred.
 また、例えば、制御情報が、対応処理情報「通信経路変更指示」を含む場合、サーバ制御部503は、警報対象エリア情報に対応するエリアを迂回する、エリア内の通信制御装置100に、制御情報を送信してもよい。例えば、警報受信部502が、警報対象エリア情報「東京」を含む、警報を受信したとする。その場合、サーバ制御部503は、エリア「東京」を迂回して通信するように、通信経路変更を指示する、制御情報を生成してもよい。そして、サーバ制御部503は、エリア「東京」を迂回するエリア(例えば、エリア「神奈川」、エリア「埼玉」等)内の通信制御装置100に、制御情報を送信してもよい。 Further, for example, when the control information includes correspondence processing information “communication path change instruction”, the server control unit 503 bypasses the area corresponding to the alarm target area information, and sends the control information to the communication control device 100 in the area. May be sent. For example, it is assumed that the alarm receiving unit 502 receives an alarm including alarm target area information “Tokyo”. In that case, the server control unit 503 may generate control information instructing to change the communication path so as to bypass the area “Tokyo” for communication. Then, the server control unit 503 may transmit control information to the communication control device 100 in an area that bypasses the area “Tokyo” (for example, the area “Kanagawa”, the area “Saitama”, etc.).
 また、上記した実施形態においては、通信制御装置100は、警報の受信の有無と、予め設定した通信の優先度とに応じて、パケットの転送経路を決定する形態について説明した。しかし、これは、通信制御装置100が、予め設定した通信の優先度を利用することに限定する趣旨ではない。通信制御装置100は、適宜、通信の優先度を変更しても良いことは勿論である。例えば、通信制御装置100が、通信の優先度を設定した後に、通信制御装置100の管理者等が、適宜、通信の内容と、当該通信の優先度とを変更、追加、削除してもよいことは勿論である。 Further, in the above-described embodiment, the communication control apparatus 100 has been described with respect to the mode in which the packet transfer path is determined according to the presence / absence of alarm reception and the preset communication priority. However, this does not mean that the communication control apparatus 100 is limited to using a preset communication priority. Of course, the communication control apparatus 100 may appropriately change the communication priority. For example, after the communication control apparatus 100 sets the communication priority, the administrator of the communication control apparatus 100 may change, add, or delete the communication content and the communication priority as appropriate. Of course.
 また、上記した実施形態において、通信制御装置やサーバ装置は、ネットワーク機能として実行されるものであってもよい。例えば、通信制御装置やサーバ装置は、専用装置により実装されても良いし、仮想マシン(Virtual Machine(VM))上で動作するソフトウェアによって、仮想的に実装されるものであってもよい。 In the above-described embodiment, the communication control device and the server device may be executed as a network function. For example, the communication control device and the server device may be implemented by a dedicated device, or may be virtually implemented by software that operates on a virtual machine (Virtual Machine (VM)).
 また、上記の説明においては、記憶部101は、通信の内容(種類)と優先度とを対応付けた情報を管理すると説明した。しかし、記憶部101の所持する情報は通信の内容(種類)と対応付けられる情報に限られず、セッションと対応付けられた情報であっても良い。 In the above description, it has been described that the storage unit 101 manages information in which the content (type) of communication and the priority are associated with each other. However, the information possessed by the storage unit 101 is not limited to information associated with the content (type) of communication, and may be information associated with a session.
 また、上記の説明においては、記憶部101の管理する優先度が通信の優先度であると説明した。しかし、記憶部101は、パケットの内容(種類)と優先度とを対応付けた情報を管理しても良い。例えば、パケットの送信元が銀行のシステムを管理する端末であれば、ミッションクリティカルな情報であるとして、高い優先度を対応付けて記憶しても良い。 Further, in the above description, it has been described that the priority managed by the storage unit 101 is the communication priority. However, the storage unit 101 may manage information in which the packet content (type) is associated with the priority. For example, if the packet transmission source is a terminal that manages a bank system, it may be stored in association with a high priority as mission-critical information.
 上述の実施形態の一部又は全部は、以下の形態のようにも記載され得るが、以下には限られない。
 (形態1)上記第1の視点に係る通信制御装置の通りである。
 (形態2)好ましくは形態1に係る通信制御部は、前記警報受信部が前記警報を受信した場合、前記優先度が閾値を超える通信に関するパケットを複製し、前記第2のネットワークに含まれる2以上の通信経路を経由して、複製したパケットを送信する。
 (形態3)好ましくは形態1又は2に係る前記通信制御部は、前記通信部が前記第2のネットワークから受信した第1のパケットを前記第1のネットワークに送信し、前記第1のパケットを送信後に、前記第2のネットワークから前記第1のパケットが複製されたパケットを受信した場合、当該複製されたパケットを破棄する。
 (形態4)好ましくは形態1乃至3のいずれか一に係る通信制御部は、前記通信部が前記第1のネットワークから受信したパケットを送信する通信経路の通信量が、該通信経路の通信帯域で送信できる通信量を超える場合、前記優先度が閾値以下の通信のパケットを破棄する。
 (形態5)上記第2の視点に係る通信システムの通りである。
 (形態6)好ましくは形態5に係る前記サーバ装置は、事象に関する情報と、該事象に関連付けられた処理情報とを管理するサーバ記憶部を含む。前記サーバ制御部は、前記警報受信部が受信した前記警報に含まれる事象に関する情報に応じて、前記制御情報を前記通信制御装置に送信する。
 (形態7)好ましくは形態6に係る前記サーバ記憶部は、前記事象に関する情報と、前記処理情報と、該事象に関連付けられた処理を実施するエリアを示すエリア情報とを管理する。前記サーバ制御部は、前記警報受信部が受信した前記警報に含まれる事象に関する情報およびエリア情報に応じて、前記エリア情報に対応する場所に配置された通信制御装置に、前記制御情報を送信する。
 (形態8)好ましくは形態5乃至7のいずれか一に係る前記制御情報は、パケットの複製指示、通信経路変更指示の少なくともいずれかを含む。
 (形態9)上記第3の視点に係る通信制御方法の通りである。
 (形態10)上記第4の視点に係るプログラムの通りである。
 (形態11)第5の視点によれば、サーバ装置が提供される。前記サーバ装置は、警報を受信する警報受信部を含む。さらに、前記サーバ装置は、前記警報受信部が受信した警報に応じて、第1のネットワークと第2のネットワークとを中継する通信制御装置にパケットの処理に関する情報である制御情報を送信するサーバ制御部を含む。
 (形態12)好ましくは形態11に係る前記サーバ装置は、事象に関する情報と、該事象に関連付けられた処理情報とを管理するサーバ記憶部を含む。前記サーバ制御部は、前記警報受信部が受信した前記警報に含まれる事象に関する情報に応じて、前記制御情報を前記通信制御装置に送信する。
 (形態13)好ましくは形態12に係る前記サーバ記憶部は、前記事象に関する情報と、前記処理情報と、該事象に関連付けられた処理を実施するエリアを示すエリア情報とを管理する。前記サーバ制御部は、前記警報受信部が受信した前記警報に含まれる事象に関する情報およびエリア情報に応じて、前記エリア情報に対応する場所に配置された通信制御装置に、前記制御情報を送信する。
 (形態14)好ましくは形態12又は13に係る前記制御情報は、パケットの複製指示、通信経路変更指示の少なくともいずれかを含む。
 なお、上記の形態5、9、10に示す形態は、形態1に示す形態と同様に、形態2乃至4に示す形態に展開することが可能である。
Part or all of the above-described embodiments may be described as in the following forms, but is not limited to the following.
(Mode 1) As in the communication control apparatus according to the first aspect.
(Mode 2) Preferably, when the alarm receiving unit receives the alarm, the communication control unit according to mode 1 duplicates a packet related to communication whose priority exceeds a threshold value and is included in the second network 2 The copied packet is transmitted via the above communication path.
(Mode 3) Preferably, the communication control unit according to mode 1 or 2 transmits the first packet received by the communication unit from the second network to the first network, and transmits the first packet. When a packet in which the first packet is duplicated is received from the second network after transmission, the duplicated packet is discarded.
(Mode 4) Preferably, the communication control unit according to any one of Modes 1 to 3 is configured so that a communication amount of a communication path through which the communication unit transmits a packet received from the first network is a communication band of the communication path. When the amount of communication that can be transmitted by the method exceeds the threshold, the communication packet whose priority is equal to or lower than the threshold is discarded.
(Mode 5) As in the communication system according to the second aspect.
(Mode 6) Preferably, the server device according to mode 5 includes a server storage unit that manages information related to an event and processing information associated with the event. The server control unit transmits the control information to the communication control device according to information related to an event included in the alarm received by the alarm reception unit.
(Mode 7) Preferably, the server storage unit according to mode 6 manages information related to the event, the processing information, and area information indicating an area in which processing associated with the event is performed. The server control unit transmits the control information to a communication control device arranged at a location corresponding to the area information in accordance with information about the event included in the alarm received by the alarm receiving unit and area information. .
(Mode 8) Preferably, the control information according to any one of modes 5 to 7 includes at least one of a packet duplication instruction and a communication path change instruction.
(Mode 9) As in the communication control method according to the third aspect.
(Mode 10) As in the program according to the fourth aspect.
(Mode 11) According to a fifth aspect, a server device is provided. The server device includes an alarm receiving unit that receives an alarm. Further, the server device transmits control information, which is information relating to packet processing, to a communication control device that relays between the first network and the second network in response to an alarm received by the alarm receiver. Part.
(Mode 12) Preferably, the server device according to mode 11 includes a server storage unit for managing information related to an event and processing information associated with the event. The server control unit transmits the control information to the communication control device according to information related to an event included in the alarm received by the alarm reception unit.
(Mode 13) Preferably, the server storage unit according to mode 12 manages information related to the event, the processing information, and area information indicating an area in which processing associated with the event is performed. The server control unit transmits the control information to a communication control device arranged at a location corresponding to the area information in accordance with information about the event included in the alarm received by the alarm receiving unit and area information. .
(Mode 14) Preferably, the control information according to mode 12 or 13 includes at least one of a packet duplication instruction and a communication path change instruction.
Note that the forms shown in the above-described forms 5, 9, and 10 can be developed into the forms shown in forms 2 to 4 in the same manner as the form shown in form 1.
 なお、上記の特許文献の開示を、本書に引用をもって繰り込むものとする。本発明の全開示(請求の範囲を含む)の枠内において、さらにその基本的技術思想に基づいて、実施形態の変更・調整が可能である。また、本発明の全開示の枠内において種々の開示要素(各請求項の各要素、各実施形態の各要素、各図面の各要素等を含む)の多様な組み合わせ、ないし、選択(部分的削除を含む)が可能である。すなわち、本発明は、請求の範囲を含む全開示、技術的思想にしたがって当業者であればなし得るであろう各種変形、修正を含むことは勿論である。特に、本書に記載した数値範囲については、当該範囲内に含まれる任意の数値ないし小範囲が、別段の記載のない場合でも具体的に記載されているものと解釈されるべきである。本発明で、アルゴリズム、ソフトウェア、ないしフローチャート或いは自動化されたプロセスステップが示された場合、コンピュータが用いられることは自明であり、またコンピュータにはプロセッサ及びメモリないし記憶装置が付設されることも自明である。よってその明示を欠く場合にも、本願には、これらの要素が当然記載されているものと解される。 It should be noted that the disclosure of the above patent document is incorporated herein by reference. Within the scope of the entire disclosure (including claims) of the present invention, the embodiment can be changed and adjusted based on the basic technical concept. Also, various combinations or selections (partial) of various disclosed elements (including each element of each claim, each element of each embodiment, each element of each drawing, etc.) within the scope of the entire disclosure of the present invention. Delete). That is, the present invention of course includes various variations and modifications that could be made by those skilled in the art according to the entire disclosure including the claims and the technical idea. In particular, with respect to the numerical ranges described in this document, any numerical value or small range included in the range should be construed as being specifically described even if there is no specific description. In the present invention, when an algorithm, software, a flowchart or an automated process step is shown, it is obvious that the computer is used, and it is obvious that the computer is provided with a processor and a memory or a storage device. is there. Therefore, it is understood that these elements are naturally described in the present application even when the description is omitted.
1 通信システム
100、100a、100b、1000 通信制御装置
110、110a、110b 端末
101 記憶部
102、1001 通信部
103、1002 警報受信部
104、1003 通信制御部
200、200a、200b 拠点
300 第1のWAN
400 第2のWAN
500 サーバ装置
501 サーバ記憶部
502 警報受信部
503 サーバ制御部
1 Communication system 100, 100a, 100b, 1000 Communication control device 110, 110a, 110b Terminal 101 Storage unit 102, 1001 Communication unit 103, 1002 Alarm reception unit 104, 1003 Communication control unit 200, 200a, 200b Base 300 First WAN
400 second WAN
500 Server device 501 Server storage unit 502 Alarm reception unit 503 Server control unit

Claims (14)

  1.  第1のネットワークと第2のネットワークを中継する通信制御装置であって、
     パケットの送受信を行う通信部と、
     警報を受信する警報受信部と、
     前記警報の受信の有無と、通信の優先度とに応じて、前記通信部が前記第1のネットワークから受信したパケットを、前記第2のネットワークに含まれる複数の通信経路のうち、1又は2以上の通信経路を経由して送信する通信制御部と、
     を含む通信制御装置。
    A communication control device that relays between a first network and a second network,
    A communication unit that transmits and receives packets;
    An alarm receiver for receiving alarms;
    Depending on whether or not the alarm is received and the communication priority, the packet received by the communication unit from the first network is one or two of the plurality of communication paths included in the second network. A communication control unit for transmitting via the above communication path;
    Including a communication control device.
  2.  前記通信制御部は、前記警報受信部が前記警報を受信した場合、
     前記優先度が閾値を超える通信に関するパケットを複製し、前記第2のネットワークに含まれる2以上の通信経路を経由して、複製したパケットを送信する、請求項1に記載の通信制御装置。
    The communication control unit, when the alarm receiving unit has received the alarm,
    The communication control device according to claim 1, wherein a packet related to communication whose priority exceeds a threshold value is duplicated, and the duplicated packet is transmitted via two or more communication paths included in the second network.
  3.  前記通信制御部は、前記通信部が前記第2のネットワークから受信した第1のパケットを前記第1のネットワークに送信し、
     前記第1のパケットを送信後に、前記第2のネットワークから前記第1のパケットが複製されたパケットを受信した場合、当該複製されたパケットを破棄する、請求項1又は2に記載の通信制御装置。
    The communication control unit transmits the first packet received by the communication unit from the second network to the first network;
    3. The communication control device according to claim 1, wherein, after receiving the packet in which the first packet is duplicated from the second network after transmitting the first packet, discards the duplicated packet. .
  4.  前記通信制御部は、前記通信部が前記第1のネットワークから受信したパケットを送信する通信経路の通信量が、該通信経路の通信帯域で送信できる通信量を超える場合、前記優先度が閾値以下の通信のパケットを破棄する、請求項1乃至3のいずれか一に記載の通信制御装置。 The communication control unit is configured such that when the communication amount of a communication path through which the communication unit transmits a packet received from the first network exceeds the communication amount that can be transmitted in the communication band of the communication path, the priority is equal to or less than a threshold value. The communication control apparatus according to claim 1, wherein the communication packet is discarded.
  5.  第1のネットワークと第2のネットワークを中継する通信制御装置と、
     前記通信制御装置を制御するサーバ装置とを含み、
     前記サーバ装置は、
     警報を受信する警報受信部と、
     前記警報受信部が受信した警報に応じて、前記通信制御装置にパケットの処理に関する情報である制御情報を送信するサーバ制御部と、を含み、
     前記通信制御装置は、
     パケットの送受信を行う通信部と、
     前記制御情報と通信の優先度とに応じて、前記通信部が前記第1のネットワークから受信したパケットを、前記第2のネットワークに含まれる複数の通信経路のうち、1又は2以上の通信経路を経由して前記パケットを送信する、通信制御部と、
     を含む通信システム。
    A communication control device that relays between the first network and the second network;
    A server device for controlling the communication control device,
    The server device
    An alarm receiver for receiving alarms;
    A server control unit that transmits control information that is information related to packet processing to the communication control device in response to an alarm received by the alarm reception unit, and
    The communication control device includes:
    A communication unit that transmits and receives packets;
    Depending on the control information and the communication priority, the communication unit receives a packet received from the first network from one or more communication paths included in the second network. A communication control unit for transmitting the packet via
    A communication system including:
  6.  前記サーバ装置は、事象に関する情報と、該事象に関連付けられた処理情報とを管理するサーバ記憶部を含み、
     前記サーバ制御部は、前記警報受信部が受信した前記警報に含まれる事象に関する情報に応じて、前記制御情報を前記通信制御装置に送信する、請求項5に記載の通信システム。
    The server device includes a server storage unit that manages information related to an event and processing information associated with the event,
    The communication system according to claim 5, wherein the server control unit transmits the control information to the communication control device in accordance with information related to an event included in the alarm received by the alarm reception unit.
  7.  前記サーバ記憶部は、前記事象に関する情報と、前記処理情報と、該事象に関連付けられた処理を実施するエリアを示すエリア情報とを管理し、
     前記サーバ制御部は、前記警報受信部が受信した前記警報に含まれる事象に関する情報およびエリア情報に応じて、前記エリア情報に対応する場所に配置された通信制御装置に、前記制御情報を送信する、請求項6に記載の通信システム。
    The server storage unit manages information related to the event, the processing information, and area information indicating an area for performing processing associated with the event,
    The server control unit transmits the control information to a communication control device arranged at a location corresponding to the area information in accordance with information about the event included in the alarm received by the alarm receiving unit and area information. The communication system according to claim 6.
  8.  前記制御情報は、パケットの複製指示、通信経路変更指示の少なくともいずれかを含む、請求項5乃至7のいずれか一に記載の通信システム。 The communication system according to any one of claims 5 to 7, wherein the control information includes at least one of a packet duplication instruction and a communication path change instruction.
  9.  パケットの送受信を行い、
     警報を受信し、
     前記警報の受信の有無と、通信の優先度とに応じて、第1のネットワークから受信したパケットを、第2のネットワークに含まれる複数の通信経路のうち、1又は2以上の通信経路を経由して送信する、
     通信制御方法。
    Send and receive packets,
    Receive alarms,
    A packet received from the first network is routed through one or more communication paths among a plurality of communication paths included in the second network, depending on whether or not the alarm is received and communication priority. Send
    Communication control method.
  10.  パケットの送受信を行い、
     警報を受信し、
     前記警報の受信の有無と、通信の優先度とに応じて、第1のネットワークから受信したパケットを、第2のネットワークに含まれる複数の通信経路のうち、1又は2以上の通信経路を経由して送信する処理を含む、
     通信制御装置を制御するコンピュータに実行させる、プログラム。
    Send and receive packets,
    Receive alarms,
    A packet received from the first network is routed through one or more communication paths among a plurality of communication paths included in the second network, depending on whether or not the alarm is received and communication priority. Including processing to send
    A program that is executed by a computer that controls a communication control device.
  11.  警報を受信する警報受信部と、
     前記警報受信部が受信した警報に応じて、第1のネットワークと第2のネットワークとを中継する通信制御装置にパケットの処理に関する情報である制御情報を送信するサーバ制御部と、
    を含むサーバ装置。
    An alarm receiver for receiving alarms;
    In response to the alarm received by the alarm receiver, a server controller that transmits control information that is information relating to packet processing to a communication control device that relays between the first network and the second network;
    Server device including
  12.  事象に関する情報と、該事象に関連付けられた処理情報とを管理するサーバ記憶部をさらに含み、
     前記サーバ制御部は、前記警報受信部が受信した前記警報に含まれる事象に関する情報に応じて、前記制御情報を前記通信制御装置に送信する、請求項11に記載のサーバ装置。
    A server storage unit for managing information related to the event and processing information associated with the event;
    The server device according to claim 11, wherein the server control unit transmits the control information to the communication control device in accordance with information related to an event included in the alarm received by the alarm reception unit.
  13.  前記サーバ記憶部は、前記事象に関する情報と、前記処理情報と、該事象に関連付けられた処理を実施するエリアを示すエリア情報とを管理し、
     前記サーバ制御部は、前記警報受信部が受信した前記警報に含まれる事象に関する情報およびエリア情報に応じて、前記エリア情報に対応する場所に配置された通信制御装置に、前記制御情報を送信する、請求項12に記載のサーバ装置。
    The server storage unit manages information related to the event, the processing information, and area information indicating an area for performing processing associated with the event,
    The server control unit transmits the control information to a communication control device arranged at a location corresponding to the area information in accordance with information about the event included in the alarm received by the alarm receiving unit and area information. The server device according to claim 12.
  14.  前記制御情報は、パケットの複製指示、通信経路変更指示の少なくともいずれかを含む、請求項12又は13に記載のサーバ装置。 The server apparatus according to claim 12 or 13, wherein the control information includes at least one of a packet duplication instruction and a communication path change instruction.
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