WO2023002602A1 - Système de communication, procédé de communication et dispositif de communication - Google Patents

Système de communication, procédé de communication et dispositif de communication Download PDF

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Publication number
WO2023002602A1
WO2023002602A1 PCT/JP2021/027327 JP2021027327W WO2023002602A1 WO 2023002602 A1 WO2023002602 A1 WO 2023002602A1 JP 2021027327 W JP2021027327 W JP 2021027327W WO 2023002602 A1 WO2023002602 A1 WO 2023002602A1
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WO
WIPO (PCT)
Prior art keywords
communication device
wired
wireless
signal
unit
Prior art date
Application number
PCT/JP2021/027327
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English (en)
Japanese (ja)
Inventor
一夫 大坂
利文 宮城
Original Assignee
日本電信電話株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本電信電話株式会社 filed Critical 日本電信電話株式会社
Priority to JP2023536292A priority Critical patent/JPWO2023002602A1/ja
Priority to PCT/JP2021/027327 priority patent/WO2023002602A1/fr
Publication of WO2023002602A1 publication Critical patent/WO2023002602A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/34—Signalling channels for network management communication
    • H04L41/344—Out-of-band transfers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
    • H04L41/0659—Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition

Definitions

  • the present invention relates to a communication system, a communication method, and a communication device.
  • some wireless equipment can be monitored by transmitting an alarm (warning: notification) according to the abnormality (for example, non-patent literature 1).
  • Non-Patent Document 1 detects the failure and transfers an alarm to the supervisory control station when an abnormality occurs in the equipment of the radio station. If it is put away, there is a problem that an alarm or control signal cannot be transmitted.
  • the present invention has been made in view of the above-described problems. It is an object of the present invention to provide a communication system, a communication method, and a communication device that enable efficient control of a communication device that is capable of controlling a communication device.
  • a communication system is a communication system in which a first communication device and a second communication device communicate with each other via a wired transmission line and a wireless transmission line, wherein the first communication device performs the wired transmission a wired signal transmission unit that transmits a signal to the second communication device via a wireless transmission path; a wireless signal transmission unit that transmits a signal to the second communication device via the wireless transmission path; and one of the second communication devices.
  • a radio signal receiving unit that receives, via the radio transmission line, a notification indicating an abnormality or state change that has occurred in the unit;
  • a wired signal receiving unit for receiving a notification indicating an abnormality or state change via the wired transmission path, and when the wireless signal receiving unit or the wired signal receiving unit receives the notification, the and a control unit that controls at least one of the wireless signal transmission unit and the wired signal transmission unit to transmit a control signal for controlling the second communication device.
  • a communication method is a communication method in which a first communication device and a second communication device communicate with each other via a wired transmission line and a wireless transmission line, wherein a failure occurs in the wireless transmission line.
  • the first communication device transmits a control signal for controlling the second communication device according to the notification to the second communication device via the wired transmission line. and a step of controlling to
  • a communication device is a communication device that mutually communicates with another communication device via a wired transmission line and a wireless transmission line, wherein A wired signal transmission unit that transmits a signal, a wireless signal transmission unit that transmits a signal to the other communication device via the wireless transmission line, and an abnormality or state change that has occurred in a part of the other communication device.
  • a radio signal receiving unit that receives a notification via the radio transmission line; a wired signal receiving unit that receives the signal through the wired transmission path; and a control signal for controlling the other communication device in response to the notification when the wireless signal receiving unit or the wired signal receiving unit receives the notification.
  • a control unit for controlling at least one of the wireless signal transmission unit and the wired signal transmission unit to transmit.
  • a communication device is a communication device that mutually communicates with another communication device via a wired transmission line and a wireless transmission line, and when a failure occurs in the wireless transmission line, A wired signal transmission unit that transmits a notification indicating an abnormality or state change that has occurred in a part of the communication device to the other communication device via the wired transmission path, and the wired signal transmission unit transmits the notification to the other communication device. and a wired signal receiving unit that receives a control signal for controlling the communication device from the other communication device via the wired transmission line when the notification is transmitted.
  • the present invention even if a failure occurs in a wireless transmission line for transmitting a notification indicating an abnormality or state change occurring in a part of the communication device, it is possible to efficiently control the communication device in which the abnormality or state change has occurred.
  • FIG. 2 is a functional block diagram illustrating functions of a first communication device, which is a communication device according to one embodiment
  • FIG. 1 is a diagram showing a configuration example of a communication system 1 according to one embodiment.
  • a communication system 1 is configured such that, for example, a first communication device 2-1 and a second communication device 2-2 communicate with each other via a wired transmission line 3 and a wireless transmission line 4. ing.
  • Each of the first communication device 2-1 and the second communication device 2-2 has a function as a transmitting device and a function as a receiving device, and is capable of two-way communication. Further, the first communication device 2-1 and the second communication device 2-2 can also operate as relay wireless devices.
  • the first communication device 2-1 transmits a user signal and the second communication device 2-2 receives the user signal will be described as an example.
  • the wired transmission line 3 is a wired section configured by connecting the first communication device 2-1 and the second communication device 2-2 with, for example, an optical cable, and enabling two-way communication.
  • the case where the wired transmission line 3 relays signals between the communication devices 10-1 and 10-2 is taken as an example.
  • the communication device 10-1 and the communication device 10-2 are connected by, for example, a submarine optical cable.
  • the radio transmission path 4 is a radio section that accommodates, for example, a plurality of radio circuits using a plurality of frequency channels and enables two-way communication between the first communication device 2-1 and the second communication device 2-2. be.
  • the wireless transmission line 4 is used as a backup line for the wired transmission line 3 .
  • the monitor control device 100 can monitor, for example, an abnormality or change in state of the first communication device 2-1 and the second communication device 2-2 via the communication device 10-1.
  • the monitor control device 100 may be configured integrally with the communication device 10-1, or may be configured integrally with the communication device 10-1 and the first communication device 2-1.
  • FIG. 2 is a functional block diagram illustrating functions of the first communication device 2-1, which is a communication device according to one embodiment.
  • the second communication device 2-2 also has the same functions as the first communication device 2-1 shown in FIG.
  • the first communication device 2-1 has a transmitter 5 and a receiver 6, for example.
  • the first communication device 2-1 is shown as an example in which the transmitting unit 5 and the receiving unit 6 have overlapping functions, but the functions common to the transmitting unit 5 and the receiving unit 6 are It may be configured to be combined and shared.
  • the transmission unit 5 includes, for example, an interface (I/F) unit 50, a priority processing unit 51, a frame processing unit 52, a switching unit 53, two modulation units 54 corresponding to frequency channels, a radio signal transmission unit 55, and a control unit 56. , and a wired signal communication unit 57 .
  • I/F interface
  • the transmission unit 5 includes, for example, an interface (I/F) unit 50, a priority processing unit 51, a frame processing unit 52, a switching unit 53, two modulation units 54 corresponding to frequency channels, a radio signal transmission unit 55, and a control unit 56. , and a wired signal communication unit 57 .
  • the I/F unit 50 is a user interface that acquires user signals and outputs them to the priority processing unit 51 .
  • the priority processing unit 51 performs processing for identifying the priority of each user signal output by the I/F unit 50 and outputs the processed user signal to the frame processing unit 52 .
  • the priority processing unit 51 processes the priority of each user signal in the same manner as QoS (quality of services) control defined in IEEE802.11e.
  • the frame processing unit 52 performs buffering or the like on the user signal output by the priority processing unit 51 to generate a predetermined frame, and outputs the generated frame to the switching unit 53 .
  • the switching unit 53 switches the frequency channel of the working system in which the abnormality has occurred to the redundant system (system 1). perform processing to switch to the other frequency channel.
  • the switching unit 53 then outputs the processed user signals to the two modulation units 54 for each frequency channel.
  • the switching unit 53 also has a function of outputting an alarm to the control unit 56 when an abnormality occurs in the frequency channel of the working system.
  • Each modulating section 54 modulates the user signal output by the switching section 53 for each frequency channel, and outputs the modulated user signal to the radio signal transmitting section 55 .
  • the modulation section 54 may have a BER (Bit Error Rate) measurement function.
  • each modulation unit 54 has a function of outputting an alarm to the control unit 56 when an abnormality occurs in the frequency channel of the working system.
  • the radio signal transmission unit 55 has two RF (radio frequency) units 550 and an antenna 552 each corresponding to a frequency channel, and transmits signals to other communication devices via the radio transmission line 4 .
  • Each RF section 550 includes a transmission amplifier, a filter, and the like, and transmits the user signal modulated by the modulation section 54 for each frequency channel via an antenna 552 . Further, each of the RF units 550 has a function of outputting an alarm to the control unit 56 when an abnormality occurs in the active frequency channel.
  • the control unit 56 monitors whether or not an abnormality has occurred in the frequency channel of the working system, and controls each unit that constitutes the transmission unit 5 .
  • the control unit 56 controls the simultaneous switching of transmission and reception in the transmission unit 5 and the reception unit 6, and detects an abnormality in the frequency channel of the working system, and the switching unit 53 switches the frequency channel of the working system to the frequency channel of the redundant system. Control to switch.
  • the control unit 56 controls the priority processing unit 51 to process the priority of the user signal.
  • the control unit 56 transmits a control signal for controlling another communication device according to the notification by wireless. At least one of the signal transmission unit 55 and the wired signal transmission unit 570 (described later) is controlled to transmit.
  • the wired signal communication unit 57 is a wired communication interface including a wired signal transmission unit 570 and a wired signal reception unit 572 that transmit and receive signals via the wired transmission line 3 (see FIG. 1). to send and receive signals.
  • the wired signal transmission unit 570 transmits signals to other communication devices via the wired transmission line 3 . Also, the wired signal transmission unit 570 transmits a predetermined notification via the wired transmission line 3 for each wireless line in the wireless transmission line 4 . For example, when a failure occurs in the wireless transmission path 4, the wired signal transmission unit 570 uses the free space of the wired transmission path 3 to send a notification indicating an abnormality or state change that has occurred in a part of the communication device. Send to another communication device.
  • the wired signal receiving unit 572 receives, via the wired transmission line 3, a notification indicating an abnormality or state change that has occurred in some of the other communication devices, for example, when a failure occurs in the wireless transmission line 4. For example, the wired signal receiving unit 572 receives a predetermined notification via the wired transmission line 3 for each wireless line in the wireless transmission line 4 .
  • the notifications received by the wired signal receiving unit 572 are, for example, alarms (equipment alarms, communication alarms), event information, etc., and are transmitted with different names for each part such as a circuit board.
  • the wired signal transmitting unit 570 transmits a predetermined notification to another communication device
  • the wired signal receiving unit 572 transmits a control signal for controlling the communication device from the other communication device to the wired transmission path 3. receive through.
  • the reception unit 6 includes, for example, a radio signal reception unit 60, two demodulation units 61 corresponding to each frequency channel, a switching unit 62, a frame processing unit 63, a priority processing unit 64, an interface (I/F) unit 65, and a control unit 66. , and a wired signal communication unit 67 .
  • the radio signal receiving section 60 has two antennas 600 and an RF section 602 each corresponding to a frequency channel, and receives signals via the radio transmission line 4 .
  • Antenna 600 receives a user signal for each frequency channel.
  • RF section 602 includes a reception amplifier, AGC (automatic gain control), etc., detects a user signal as a reception signal for each frequency channel via antenna 600 , and outputs the detected user signal to demodulation section 61 .
  • AGC automatic gain control
  • the radio signal receiving unit 60 receives, via the radio transmission line 4, a notification indicating an abnormality or state change that has occurred in some of the other communication devices. Further, each RF unit 602 outputs the detected signal to the control unit 66 . Further, each of the RF units 602 has a function of outputting an alarm to the control unit 66 when an abnormality occurs in the active frequency channel.
  • Each demodulator 61 demodulates the user signal received by the radio signal receiver 60 for each frequency channel, and outputs the demodulated user signal to the switcher 62 . Also, the demodulator 61 may have a BER measurement function. Further, each demodulator 61 has a function of outputting an alarm to the controller 66 when an abnormality occurs in the working frequency channel.
  • the switching unit 62 When an abnormality occurs in a working frequency channel that transmits user signals demodulated by each of the demodulators 61, the switching unit 62 performs processing for switching the abnormal working frequency channel to a redundant frequency channel. . Then, the switching unit 62 outputs the processed user signals to the frame processing unit 63 for each frequency channel.
  • the switching unit 62 also has a function of outputting an alarm to the control unit 66 when an abnormality occurs in the frequency channel of the working system.
  • the frame processing unit 63 performs buffering or the like on the user signal output by the switching unit 62 to generate a predetermined frame, and outputs the generated frame to the priority processing unit 64 .
  • the priority processing unit 64 performs processing for identifying the priority of the user signal output by the frame processing unit 63 and outputs the processed user signal to the I/F unit 65 .
  • the priority processing unit 64 processes the priority of each user signal in the same manner as the QoS control specified in IEEE802.11e.
  • the I/F unit 65 is a user interface that acquires the user signal output by the priority processing unit 64 and outputs it to the subsequent stage.
  • the control unit 66 monitors whether or not an abnormality has occurred in the frequency channel of the working system, and controls each unit that constitutes the receiving unit 6 . For example, the control unit 66 controls the simultaneous switching of transmission and reception in the receiving unit 6 and the transmitting unit 5, detects an abnormality in the working frequency channel, and the switching unit 62 switches the working frequency channel to the redundant frequency channel. Control to switch. Also, the control unit 66 controls the priority processing unit 64 to process the priority of the user signal.
  • the control unit 66 transmits a control signal for controlling another communication device according to the notification by wireless signal transmission. At least one of the unit 55 and the wired signal transmission unit 670 (described later) is controlled to transmit.
  • the wired signal communication unit 67 is a wired communication interface including a wired signal transmission unit 670 and a wired signal reception unit 672 that transmit and receive signals via the wired transmission line 3 (see FIG. 1). to send and receive signals.
  • the wired signal transmission unit 670 transmits signals to other communication devices via the wired transmission path 3 . Also, the wired signal transmission unit 670 transmits a predetermined notification via the wired transmission line 3 for each wireless line in the wireless transmission line 4 . For example, when a failure occurs in the wireless transmission path 4, the wired signal transmission unit 670 uses the free space of the wired transmission path 3 to send a notification indicating an abnormality or state change that has occurred in a part of the communication device. Send to another communication device.
  • the wired signal receiving unit 672 receives, via the wired transmission path 3, a notification indicating an abnormality or state change that has occurred in some of the other communication devices, for example, when a failure occurs in the wireless transmission path 4. For example, the wired signal receiving unit 672 receives a predetermined notification via the wired transmission line 3 for each wireless line in the wireless transmission line 4 .
  • the notifications received by the wired signal receiving unit 672 are, for example, alarms (equipment alarms, communication alarms), event information, etc., and are transmitted with different names for each part such as a circuit board.
  • the wired signal transmitting unit 670 transmits a predetermined notification to another communication device
  • the wired signal receiving unit 672 transmits a control signal for controlling the communication device from the other communication device to the wired transmission line 3. receive through.
  • each function of each of the above-described transmitting unit 5 and receiving unit 6 may be partially or entirely configured by hardware such as PLD (Programmable Logic Device) or FPGA (Field Programmable Gate Array), It may be configured as a program executed by a processor such as a CPU.
  • PLD Processable Logic Device
  • FPGA Field Programmable Gate Array
  • the transmission unit 5 and reception unit 6 can be realized using a computer and a program, and the program can be recorded on a storage medium or provided through a network.
  • the first communication device 2-1 transmits user signals and the second communication device 2-2 receives user signals.
  • the first communication device 2-1 notifies the wired transmission line 3 of is received from the second communication device 2-2 via.
  • the notification received by the first communication device 2-1 is, for example, a communication alarm. This is the information sent from -2. Also, the notification received by the first communication device 2-1 is, for example, event information, and is information indicating a change in the operating state such as the system switching result of system 0/system 1 in the communication device, CPU start, and the like. may
  • the first communication device 2-1 Upon receiving the notification, the first communication device 2-1 transmits a control signal for controlling the second communication device 2-2 according to the notification to the second communication device 2-2 via the wired transmission path 3. control as follows.
  • the first communication device 2-1 when a failure occurs in the wireless transmission path 4, for example, the first communication device 2-1 causes a part of the second communication device 2-2 to A notification indicating an abnormality or state change is received via the wired transmission path 3, and the second communication device 2-2 is controlled according to the notification.
  • the communication system 1 transfers alarms and control signals via the wired transmission line 3 arranged in parallel with the wireless transmission line 4 . Therefore, since the communication system 1 can grasp in detail the warning and event information of the communication device facing the first communication device 2-1 or the second communication device 2-2, when a failure occurs in the wireless transmission line 4, , the cause can be accurately isolated, and the method required to restore communication can be accurately determined.
  • the first communication device 2-1 when the first communication device 2-1 is a manned station and the second communication device 2-2 is an unmanned station, a part of the second communication device 2-2 using the wireless transmission line 4 fails.
  • the second communication device 2-2 notifies the first communication device 2-1 of the location of the failure via the wired transmission line 3 as a device alarm. Thereafter, the first communication device 2-1 can switch the failed device of the second communication device 2-2 to a backup device by controlling the second communication device 2-2 via the wired transmission line 3. be.
  • the first communication device 2-1 can perform remote reset control.
  • the first communication device 2-1 can also remotely switch the transmitter output signal of the second communication device 2-2 to a dummy load or an antenna.
  • the communication system 1 can efficiently transmit the communication device in which the abnormality or state change has occurred. It is possible to perform control, efficiently restore communication, and perform high-quality wireless communication.
  • 1... communication system 2-1... first communication device, 2-2... second communication device, 3... wired transmission line, 4... wireless transmission line, 5... transmission Unit, 6... Receiving unit, 10-1... Communication device, 10-2... Communication device, 50... I/F unit, 51... Priority processing unit, 52... Frame processing Unit 53 Switching unit 54 Modulating unit 55 Radio signal transmitting unit 56 Control unit 57 Wired signal communication unit 60 Radio signal receiving unit 61... demodulation unit, 62... switching unit, 63... frame processing unit, 64... priority processing unit, 65... I/F unit, 66... control unit, 67... Wired signal communication unit 100 Monitoring control device 550 RF unit 552 Antenna 570 Wired signal transmitter 572 Wired signal receiver 600 Antenna 602...RF unit, 670...Wired signal transmitter, 672...Wired signal receiver

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)

Abstract

Un système de communication selon un mode de réalisation de la présente invention dans lequel un premier dispositif de communication et un deuxième dispositif de communication communiquent l'un avec l'autre par l'intermédiaire d'un trajet de distribution filaire et d'un trajet de distribution sans fil, le premier dispositif de communication comprenant : une unité de transmission de signal filaire pour transmettre un signal au deuxième dispositif de communication par l'intermédiaire du trajet de distribution filaire ; une unité de transmission de signal sans fil pour transmettre le signal au deuxième dispositif de communication par l'intermédiaire du trajet de distribution sans fil ; une unité de réception de signal sans fil pour recevoir, par l'intermédiaire du trajet de distribution sans fil, une notification indiquant une anomalie ou un changement d'état qui s'est produit dans une partie du deuxième dispositif de communication ; une unité de réception de signal filaire pour recevoir, par l'intermédiaire du trajet de distribution filaire lorsque le trajet de distribution sans fil est encombré, une notification indiquant une anomalie ou un changement d'état qui s'est produit dans une partie du deuxième dispositif de communication ; et une unité de commande pour effectuer une commande, lorsque l'unité de réception de signal sans fil ou l'unité de réception de signal filaire reçoit une notification, de telle sorte qu'un signal de commande pour commander le deuxième dispositif de communication en fonction de la notification est transmis par l'unité de transmission de signal sans fil et/ou l'unité de transmission de signal filaire.
PCT/JP2021/027327 2021-07-21 2021-07-21 Système de communication, procédé de communication et dispositif de communication WO2023002602A1 (fr)

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JP2023536292A JPWO2023002602A1 (fr) 2021-07-21 2021-07-21
PCT/JP2021/027327 WO2023002602A1 (fr) 2021-07-21 2021-07-21 Système de communication, procédé de communication et dispositif de communication

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PCT/JP2021/027327 WO2023002602A1 (fr) 2021-07-21 2021-07-21 Système de communication, procédé de communication et dispositif de communication

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009296293A (ja) * 2008-06-05 2009-12-17 Mitsubishi Electric Corp 通信装置
JP2013197603A (ja) * 2012-03-15 2013-09-30 Fujitsu Ltd 通信監視装置、中継方法及び中継プログラム
WO2019229980A1 (fr) * 2018-06-01 2019-12-05 三菱電機株式会社 Dispositif de passerelle, système de réseau, et procédé de détection de défaillance pour point d'accès
JP2020194991A (ja) * 2019-05-24 2020-12-03 矢崎総業株式会社 有線／無線混在通信システムのための送信器、受信器および有線／無線混在通信システム

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009296293A (ja) * 2008-06-05 2009-12-17 Mitsubishi Electric Corp 通信装置
JP2013197603A (ja) * 2012-03-15 2013-09-30 Fujitsu Ltd 通信監視装置、中継方法及び中継プログラム
WO2019229980A1 (fr) * 2018-06-01 2019-12-05 三菱電機株式会社 Dispositif de passerelle, système de réseau, et procédé de détection de défaillance pour point d'accès
JP2020194991A (ja) * 2019-05-24 2020-12-03 矢崎総業株式会社 有線／無線混在通信システムのための送信器、受信器および有線／無線混在通信システム

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