WO2018177154A1 - Procédé de reprise sur défaillance de communication et premier élément de réseau de communication - Google Patents

Procédé de reprise sur défaillance de communication et premier élément de réseau de communication Download PDF

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Publication number
WO2018177154A1
WO2018177154A1 PCT/CN2018/079523 CN2018079523W WO2018177154A1 WO 2018177154 A1 WO2018177154 A1 WO 2018177154A1 CN 2018079523 W CN2018079523 W CN 2018079523W WO 2018177154 A1 WO2018177154 A1 WO 2018177154A1
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WIPO (PCT)
Prior art keywords
network element
channel
communication network
communication
path
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PCT/CN2018/079523
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English (en)
Chinese (zh)
Inventor
管冬根
袁道春
蔡长波
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华为技术有限公司
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Publication of WO2018177154A1 publication Critical patent/WO2018177154A1/fr

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    • 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
    • H04L41/0663—Performing the actions predefined by failover planning, e.g. switching to standby network elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42—Loop networks
    • H04L12/437—Ring fault isolation or reconfiguration

Definitions

  • the present application relates to the field of communications, and in particular, to a communication failure recovery method and a first communication network element.
  • the current differential relay protection service is a power core production control service.
  • the technical requirement of the current differential relay protection service to the communication network delay symmetry is that the power relay protection device can perceive when the service guide is turned on. Communication failure, at this time, the power relay protection device will not malfunction; in the case of service double-conducting, if the transmission and reception paths are inconsistent, the power relay protection device may malfunction, which may further cause serious production accidents.
  • the multiplex section protection ring is used, and the single fiber fault recovery is performed based on the G.841 standard multiplexing switching protocol.
  • the G.841 standard multiplexed switching protocol due to the theoretical defect of the G.841 standard multiplexed switching protocol, when the single-fiber fault recovery occurs, the service double-conducting occurs, but the transmission and reception paths are inconsistent, resulting in failure to meet the current differential relay protection service to the communication network. Transceiver delay symmetry requirements.
  • the multiplex section protection ring is not configured by establishing two independent communication networks, this means that when the primary communication network fails, the primary communication network does not have its own communication failure recovery function, and only The reliability of fiber-optic communication is reduced by power relay protection devices or manually enabling an alternate communication network to restore normal communication.
  • the embodiment of the present application provides a communication failure recovery method, including:
  • the first communication network element when the first communication network element detects that the receiving path communication of the first channel is interrupted, the first communication network element determines to use the receiving path of the first channel and the sending path of the second channel to perform data transmission, and at the same time, the first communication network The element determines the receiving path of the second channel for data reception. It should be understood that when the working channel has a one-way communication failure, the first communication network element uses the working channel and the protection channel for dual transmission, and uses the protection channel for single reception;
  • the first communication network element does not convert the data transmission and reception path, that is, the first communication network element still uses the working channel and the protection channel for dual transmission, and uses the protection channel. Make a single receipt.
  • the embodiment of the present application has the following advantages: First, when the receiving path of the first channel is restored by communication interruption to normal communication, the first communication network element does not convert the data transmission and reception path, and the second communication network element The second communication network element uses the first channel for data transmission instead of the second channel, and the second communication network element to the first communication network element direction. The communication is interrupted. Secondly, since the second communication network element uses the first channel for data reception, and the first communication network element still uses the first channel for data transmission, the second communication network element uses the first direction to the first communication network element. The channel performs normal communication. Therefore, the one-way communication between the first communication network element and the second communication network element is normal, so that the power relay protection device can sense the communication failure and avoid the power relay protection device from malfunctioning.
  • the communication failure recovery method in the application embodiment improves the reliability of the fiber communication.
  • the communication failure recovery method further includes:
  • the first communication network element When the first communication network element receives the first message sent by the second communication network element, where the first message is used to instruct the first communication network element to perform data transceiving path conversion, at this time, the first communication network element will Originally, the first channel and the second channel are used for data dual-transformation to use only the transmission path of the first channel for data transmission, and the first communication network element converts the data reception using the second channel to use the first channel for data transmission. receive.
  • the first communication network element when the first communication network element receives the indication information indicating the switching of the transmission and reception path, the first communication network element performs data transmission by using the working channel and the protection channel at the same time. And using the protection channel for data reception, converting to using only the first channel for data transmission and data reception, it should be understood that this possible implementation enables the communication of the first communication network element to be switched from the protection channel to the working channel.
  • the first communication network element determines, according to the first message, determining to use the sending path of the first channel to perform data transmission, and determining to use the first Before the receiving path of the channel performs data reception, the communication failure recovery method further includes:
  • the first communications network element receives the first message sent by the second communications network element.
  • the first communication unit is further converted to have the first The channel performs data transmission and reception, so that the transmission and reception paths between the first communication unit and the second communication unit become identical again.
  • the foregoing first message may be a multiplex section protocol long-path control word sent by the second communication network element through the second channel.
  • the second communication network element sends the multiplex section protocol long-path control word through the second channel, so that the first communication network element learns that the data transmission and reception path transformation needs to be performed.
  • the embodiment of the present application provides a first communication network element, where the first communication network element has a function of implementing the behavior of the first communication network element in the foregoing first aspect.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the embodiment of the present application provides a first communication network element, including: a processor, a memory, an input device, and an output device; the memory is configured to store a computer execution instruction, when the first communication network element is running, the The processor executes the computer-executable instructions stored by the memory to cause the first communication network element to perform the communication failure recovery method of any of the above first aspects.
  • an embodiment of the present application provides a computer readable storage medium, configured to store computer software instructions used by the first communication network element, when the computer is running on a computer, to enable the computer to perform the first aspect.
  • an embodiment of the present application provides a computer program product comprising instructions, which when executed on a computer, enable the computer to perform the communication failure recovery method of any of the above first aspects.
  • FIG. 1 is a schematic diagram of a system framework of a communication failure recovery method according to an embodiment of the present application
  • FIG. 2 is a schematic diagram of an embodiment of a communication failure recovery method according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of an embodiment of a first communication network element in an embodiment of the present application.
  • FIG. 4 is a schematic diagram of another embodiment of a first communication network element in an embodiment of the present application.
  • FIG. 5 is a schematic diagram of another embodiment of a first communication network element in the embodiment of the present application.
  • the embodiment of the present application provides a communication failure recovery method and a first communication network element, which are used to improve the reliability of optical fiber communication.
  • the G.841 standard multiplex section switching protocol is used to perform communication failure recovery.
  • a multiplex section protection ring composed of an A network element, a B network element, a C network element, and a D network element, when a one-way communication failure occurs, is performed according to a G.841 standard multiplex section switching protocol.
  • the one-way communication failure is restored. It should be understood that, as shown in Figure 1, the communication mode between the above four network elements is to use full-duplex communication.
  • the B network element and the C network element are taken as examples, and the B network element and The one-way communication failure between the C network elements can be understood as the data communication interruption of the B network element to the C network element, and the data communication of the C network element to the B network element is normal.
  • the working channel is selected between the B network element and the C network element for communication;
  • the protection channel is enabled to communicate between the B network element and the C network element, that is, the A network element and the D network element are used as data. Forward relay for indirect communication, or bridging.
  • the first communication network element uses the C network element
  • the second communication network element uses the B network element as an example to describe the communication failure recovery method in the embodiment of the present application. Can be as follows:
  • the communication channel (working channel or protection channel) between the B network element and the C network element, for the B network element, the one-way communication path from the B network element to the C network element, for the B network
  • the data transmission path is a data transmission path for the C network element, but it can be understood that, in essence, the data transmission path of the B network element and the data reception path of the C network element are the same in the communication channel.
  • Direction the same path.
  • an embodiment of the communication failure recovery method in the embodiment of the present application includes:
  • the C network element detects that the receiving path communication interruption of the first channel is performed.
  • the C network element detects the receiving path communication terminal of the first channel, where the first channel is a working channel for performing full duplex communication between the C network element and the B network element, and it should be understood that the first channel is
  • the receiving path interrupt is the communication terminal from the B network element to the C network element in the working channel, and the communication is normal to the C network element to the B network element in the working channel.
  • the second channel is a protection channel for full-duplex communication between the C network element and the B network element.
  • the second channel is a backup channel for protection.
  • the working channel sends a communication failure. It is enabled, however, it should be noted that there may be multiple communication failure possibilities for the case where the second channel is enabled, and there is no limitation here.
  • the C network element triggers the multiplex section protection ring to perform communication failure recovery.
  • the C network element after the C network element detects that the receiving path of the first channel is interrupted, the C network element triggers the multiplex section protection ring to perform communication fault recovery.
  • the multiplex section protection ring is based on the G.841 standard.
  • the multiplex section switching protocol is used to perform communication fault recovery.
  • the operation of the C network element to trigger the multiplex section protection ring may be specifically as follows:
  • the C network element performs bridging and switching respectively, wherein the bridging is for the transmitting end, and the dual transmission is performed (that is, the first channel and the second end are used for data transmission), and specifically, the C network element is used at the same time.
  • the transmission path of the channel and the transmission path of the second channel are used for data transmission.
  • the switching is performed by the second terminal instead of the first channel for receiving, for example, the C network element is determined to use the second The receiving path of the channel performs data reception without using the receiving path of the first channel for data reception.
  • the B network element performs bridging and switching, where the bridging is performed for the transmitting end, and the dual transmission is performed (that is, the first channel and the second end are used for data transmission), and specifically: the B network element Simultaneously, the receiving path of the first channel is used for data transmission, and the receiving path of the second channel is used for data transmission.
  • the second terminal is used instead of the first channel for data reception, which may be specifically: B The network element determines to use the transmission path of the second channel to perform data reception without using the transmission path of the first channel for data reception.
  • both the C network element and the B network element enable the second channel for data transmission and reception.
  • the transmission and reception paths are the same, and both are the second channel, that is, the protection channel.
  • the C network element does not convert the data transmission and reception path.
  • the C network element when the receiving path of the first channel is restored to the normal communication, the C network element does not change the data transmission and reception path. It can be understood that when the one-way communication interruption of the B network element to the C network element is restored to normal. The C network element continues to use bridging and switching.
  • the B network element transforms a data transmission and reception path.
  • the B network element when the receiving path of the first channel is restored by the communication interruption to the normal communication, the B network element transforms the data transmission and reception path, which can be understood as: at this time, the B network element changes the data transmission and reception path, and the C network element does not have The data transmission and reception path is changed.
  • the B network element transformation data transmission and reception path may be: the B network element cancels the bridge and the switch at the same time, that is, the B network element re-determines the use of the first path of the first channel for data transmission. And determining to use the transmission path of the first channel described above for data reception.
  • the B network element since the B network element has been unbridged, the second channel is no longer used for data transmission, and the C network element is not canceled and can only receive data in the second channel. Therefore, the B network element cannot be sent. The data is transmitted to the C network element.
  • the B network element since the B network element has been canceled and switched, the first channel is used for data reception, and the C network element is not cancelled, and the first channel and the second channel are simultaneously used for data transmission. Therefore, C The network element can send data to the B network element.
  • the B network element and the C network element belong to a single-way communication.
  • the B network element when the B network element receives the multiplex section protocol long-path control word K_L_C2B sent by the C network element through the second channel, the B network element cancels the bridging and switching respectively.
  • the C network element transforms the data transmission and reception path.
  • the C network element is similar to the B network element, and the bridging and switching are also cancelled respectively.
  • the C network element when the C network element receives the first message sent by the B network element through the second channel, the C network element cancels the bridging and switching respectively, where the first message is used to indicate The C network element performs data transmission and reception path conversion.
  • the foregoing first message may be a multiplex section protocol long path control word K_L_B2C.
  • the C network element when the receiving path of the first channel is restored by the communication interruption to the normal communication, the C network element does not cancel the bridge and the switching, and after the B network element cancels the bridge and the switching respectively, the C network element cancels the bridge and the respectively.
  • the data is switched so that the service from the B network element to the C network element is different, and the service from the C network element to the B network element is different. Then, the service between the B network element and the C network element is double-passed, and the data transmission and reception path is re-routed. It becomes the first channel to become consistent. Therefore, during the entire communication failure interruption recovery process, there is no service bi-directional communication between the B network element and the C network element, but the data transmission and reception paths are inconsistent, so that the power continues.
  • the electrical protection device can sense the communication failure and avoid the power relay protection device from malfunctioning. Therefore, the communication failure recovery method in the embodiment of the present application improves the reliable communication of the optical fiber communication.
  • an embodiment of the first network element in the embodiment of the present application includes:
  • the first determining unit 301 is configured to: when the first communication network element detects that the receiving path communication of the first channel is interrupted, determine to use the sending path of the first channel and the sending path of the second channel to perform data transmission, and determine to use The receiving channel of the two channels performs data receiving, wherein the first channel is a working channel for performing full duplex communication between the first communication network element and the second communication network element, and the second channel is the first communication network element a protection channel for performing full duplex communication with the second communication network element;
  • the path changing unit 302 is configured to: when the receiving path of the first channel is restored by the communication interruption to the normal communication, the data transceiving path is not changed, so that the first communication network element still uses the receiving path of the first channel to interrupt communication.
  • the transmission and reception path determined to be used for data transmission and reception.
  • the first communication network element may further include: a second determining unit 403; wherein, the second determining unit 403 is configured to use the first communications network element Receiving the first message sent by the second communication network element, determining, according to the first message, that the data is sent by using the sending path of the first channel, and determining to use the receiving path of the first channel to perform data receiving, where the first The message is used to indicate that the first communication network element performs data transceiving path conversion.
  • the first communication network element may further include: a receiving unit 404, where the receiving unit 404 is configured to determine, when the second communication network element uses the first The receiving path of the channel is used for data transmission, and when the data is received by using the sending path of the first channel, the first message sent by the second communication network element is received.
  • the first message may be a multiplex section protocol long path control word sent by the second communication network element through the second channel.
  • the first communication network element when the receiving path of the first channel is restored by communication interruption to normal communication, the first communication network element does not convert the data transmission and reception path, and the second communication network element is still in the direction of the first communication network element.
  • the second channel performs communication, but at this time, the second communication network element uses the first channel for data transmission instead of using the second channel, and the communication of the second communication network element to the first communication network element direction is interrupted; secondly, because of the second communication
  • the network element uses the first channel for data reception, and the first communication network element still uses the first channel for data transmission, and the second communication network element uses the first channel for normal communication to the first communication network element direction.
  • the first communication The one-way communication between the network element and the second communication network element is normal, so that the power relay protection device can sense the communication failure and avoid the power relay protection device from malfunctioning. Therefore, the communication failure recovery method in the embodiment of the present application is improved. A reliable letter for fiber optic communications.
  • the foregoing embodiment 2 describes the first communication network element in the embodiment of the present application in detail from the aspect of the virtual functional device.
  • the following describes the first communication network element in the embodiment of the present application from the aspect of the physical structure, which may be specifically as follows:
  • the third embodiment as shown in FIG. 5, another embodiment of the first network element in the embodiment of the present application includes: a receiver 501, a transmitter 502, a processor 503, a memory 504, and a bus 505.
  • the memory 504 can include read only memory and random access memory and provides instructions and data to the processor 503.
  • a portion of the memory 504 may also include a non-volatile random access memory (English name: Non-Volatile Random Access Memory, English abbreviation: NVRAM).
  • Memory 504 stores the following elements, executable modules or data structures, or subsets thereof, or their extended sets:
  • Operation instructions including various operation instructions for implementing various operations
  • Operating system Includes a variety of system programs for implementing various basic services and handling hardware-based tasks.
  • the processor 503 in the embodiment of the present application may be used to perform operations corresponding to the first communication network element in the foregoing embodiment, and may include the following operations:
  • the first channel is a working channel for performing full-duplex communication between the first communication network element and the second communication network element, and the second channel is the first communication network element and the second communication network element. a protection channel for full duplex communication;
  • the data transmission and reception path is not changed, so that the first communication network element still uses the transmission and reception path determined when the reception path communication of the first channel is interrupted. Data is sent and received.
  • the processor 503 is configured to perform the following steps: when the receiving path of the first channel is restored by the communication interruption to normal communication, the data transmission and reception path is not changed, so that the first communication network element still uses the first The receiving and receiving path determined by the channel's receiving path communication is interrupted for data transmission and reception.
  • the processor 503 is configured to: when the first communication network element receives the first message sent by the second communication network element, determine, according to the first message, use a sending path of the first channel Data transmission is performed, and data reception is performed by using the receiving path of the first channel, where the first message is used to instruct the first communication network element to perform data transceiving path conversion.
  • the processor 503 controls the operation of the first communication network element, and the processor 503 can also be referred to as a central processing unit (English name: Central Processing Unit, English abbreviation: CPU).
  • Memory 504 can include read only memory and random access memory and provides instructions and data to processor 503. A portion of the memory 504 may also include an NVRAM.
  • the components of the first communication network element are coupled together by a bus system 505.
  • the bus system 505 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 505 in the figure.
  • Processor 503 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 503 or an instruction in a form of software.
  • the processor 503 may be a general-purpose processor, a digital signal processor (English name: Digital Signal Processing, English abbreviation: DSP), an application-specific integrated circuit (English name: Application Specific Integrated Circuit, English abbreviation: ASIC), ready-made programmable Gate array (English name: Field-Programmable Gate Array, English abbreviation: FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 504, and the processor 503 reads the information in the memory 504 and combines the hardware to perform the steps of the above method.
  • FIG. 5 The related description of FIG. 5 can be understood by referring to the related description and effect of the method part of FIG. 2, and no further description is made here.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • a computer readable storage medium A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

La présente invention concerne, dans ses modes de réalisation, un procédé de reprise sur défaillance de communication et un premier élément de réseau de communication, pour améliorer la fiabilité de communications par fibre optique. Le procédé selon les modes de réalisation de la présente invention comprend les étapes suivantes : lorsqu'un premier élément de réseau de communication détecte que le trajet de réception d'un premier canal a été interrompu en communication, le premier élément de réseau de communication détermine d'utiliser le trajet d'émission du premier canal et du trajet d'émission d'un second canal pour effectuer une émission de données, et détermine d'utiliser le trajet de réception du second canal pour effectuer une réception de données ; lorsque le trajet de réception du premier canal est repris suite à une interruption en communication pour être normal en communication, le premier élément de réseau de communication ne change pas les trajets de réception et d'émission de données, de sorte que le premier élément de réseau de communication utilise encore les trajets de réception et d'émission déterminés lorsque le trajet de réception du premier canal a été interrompu en communication, pour effectuer une émission et une réception de données.
PCT/CN2018/079523 2017-03-30 2018-03-20 Procédé de reprise sur défaillance de communication et premier élément de réseau de communication WO2018177154A1 (fr)

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CN201710201880.2A CN108667643A (zh) 2017-03-30 2017-03-30 一种通信故障恢复方法及第一通信网元
CN201710201880.2 2017-03-30

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CN113473267B (zh) * 2020-03-31 2023-03-28 华为技术有限公司 数据传输方法、装置及通信装置

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CN101582735A (zh) * 2008-05-14 2009-11-18 中国移动通信集团公司 一种保护倒换方法及装置
CN101877646A (zh) * 2009-04-28 2010-11-03 华为技术有限公司 一种保护倒换方法和节点设备
US20100309777A1 (en) * 2009-06-05 2010-12-09 Fujitsu Limited Node apparatus, processing unit, and control frame processing method
EP2632081A1 (fr) * 2010-11-19 2013-08-28 ZTE Corporation Procédé et appareil pour rediriger des signaux vers une voie initiale dans un réseau de transmission
CN106100954A (zh) * 2016-06-15 2016-11-09 北京航空航天大学 一种基于SpaceWire总线的APS冗余方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101582735A (zh) * 2008-05-14 2009-11-18 中国移动通信集团公司 一种保护倒换方法及装置
CN101877646A (zh) * 2009-04-28 2010-11-03 华为技术有限公司 一种保护倒换方法和节点设备
US20100309777A1 (en) * 2009-06-05 2010-12-09 Fujitsu Limited Node apparatus, processing unit, and control frame processing method
EP2632081A1 (fr) * 2010-11-19 2013-08-28 ZTE Corporation Procédé et appareil pour rediriger des signaux vers une voie initiale dans un réseau de transmission
CN106100954A (zh) * 2016-06-15 2016-11-09 北京航空航天大学 一种基于SpaceWire总线的APS冗余方法

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