WO2024082650A1 - 串扰故障检测方法、装置、网络系统及计算机存储介质 - Google Patents

串扰故障检测方法、装置、网络系统及计算机存储介质 Download PDF

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Publication number
WO2024082650A1
WO2024082650A1 PCT/CN2023/098999 CN2023098999W WO2024082650A1 WO 2024082650 A1 WO2024082650 A1 WO 2024082650A1 CN 2023098999 W CN2023098999 W CN 2023098999W WO 2024082650 A1 WO2024082650 A1 WO 2024082650A1
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bandwidth
bandwidth allocation
network
crosstalk
fault detection
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PCT/CN2023/098999
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English (en)
French (fr)
Inventor
李明生
张伟良
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中兴通讯股份有限公司
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Publication of WO2024082650A1 publication Critical patent/WO2024082650A1/zh

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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
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0896—Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0823—Errors, e.g. transmission errors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems

Definitions

  • the present application relates to the field of network communication technology, and in particular to a method, device, network system and computer storage medium for detecting crosstalk faults in network bandwidth.
  • GPON Gigabit-Capable PON
  • ODN Optical Distribution Network
  • the XG(S)-PON ONU (Optical Network Unit) affected the receiving sensitivity of the GPON OLT (Optical Line Terminal), resulting in bit errors.
  • the transmitted optical signal of the XG-PON ONU carries a high power spectral density signal in the GPON band.
  • the standard organization proposed to limit the OOB PSD (Out-of-Band Power Spectral Density) of the XG(S)-PON ONU.
  • the cost of the XG(S)-PON ONU needs to be increased, and due to the large number of ONUs, the overall cost is high.
  • the present application provides a network bandwidth crosstalk fault detection method, device, network system and computer storage medium, aiming to solve the problem of bit errors when receiving data on the OLT side at a low cost.
  • the present application provides a method for detecting crosstalk faults in a network bandwidth, comprising:
  • the bandwidth allocation overlap of the optical network units of different channels is checked, and according to the bit error situation on the network terminal side, the bandwidth crosstalk fault result of the network is obtained.
  • the embodiment of the present application also provides a network bandwidth crosstalk fault detection device, including:
  • a capture module configured to capture bandwidth allocation results of different channels in the network
  • the fault analysis module is configured to check the bandwidth allocation overlap of optical network units of different channels according to the captured bandwidth allocation results of different channels, and obtain the bandwidth crosstalk fault condition of the network according to the bit error condition at the network terminal side.
  • An embodiment of the present application also provides a network system, including a crosstalk fault detection device, the crosstalk fault detection device including a processor and a memory, the memory storing a program for detecting crosstalk faults of network bandwidth, the program being called by the processor to execute the crosstalk fault detection method of any of the above-mentioned embodiments.
  • An embodiment of the present application further provides a computer storage medium storing a computer processing program, wherein the computer processing program is called by a processor to execute the crosstalk fault detection method of any of the above-mentioned implementation modes.
  • the embodiment of the present application captures the bandwidth allocation results of different channels during network transmission, thereby analyzing the bandwidth allocation results and determining the situation of the crosstalk fault, thereby eliminating the need to modify the functions of the existing system and achieving low implementation cost, being able to quickly locate the crosstalk fault and solving the problem of bit errors when receiving data on the OLT side.
  • FIG1 is a schematic diagram of a flow chart of a method for detecting a crosstalk fault in a network bandwidth according to a first embodiment of the present application
  • FIG2 is a schematic flow chart of a method for detecting crosstalk faults in network bandwidth according to a second embodiment of the present application
  • FIG3 is a schematic diagram of functional modules of a device for detecting crosstalk faults in network bandwidth according to an embodiment of the present application
  • FIG4 is a schematic diagram of the structure of a network system related to the present application, wherein the network system includes XG(S)-PON system and GPON system.
  • first, second, third, etc. may be used to describe various information in this article, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.
  • first information may also be referred to as the second information
  • second information may also be referred to as the first information.
  • word “if” as used herein may be interpreted as “at the time of” or “when” or “in response to determination”.
  • singular forms “one”, “an” and “the” are intended to also include plural forms unless there is an opposite indication in the context.
  • A, B, C means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”, for example, “A, B or C” or “A, B and/or C” means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”.
  • An exception to this definition will only occur when the combination of elements, functions, steps or operations are inherently mutually exclusive in some way.
  • steps in the flowchart in the embodiment of the present application are shown in sequence according to the indication of the arrows, these steps are not necessarily performed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and it can be performed in other orders. Moreover, at least a portion of the steps in the figure may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and their execution order is not necessarily performed in sequence, but can be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
  • the words “if” and “if” may be interpreted as “at the time of” or “when” or “in response to determining” or “in response to detecting”, depending on the context.
  • the phrases “if it is determined” or “if (stated condition or event) is detected” may be interpreted as “when it is determined” or “in response to determining” or “when detecting (stated condition or event)” or “in response to detecting (stated condition or event)", depending on the context.
  • step codes such as S10 and S20 are used for the purpose of expressing the corresponding content more clearly and concisely, and do not constitute a substantial limitation on the sequence.
  • those skilled in the art may execute S20 first and then S10, etc., but these should all be within the scope of protection of this application.
  • module means, “component” or “unit” used to represent elements are only used to facilitate the description of the present application, and have no specific meanings. Therefore, “module”, “component” or “unit” can be used in a mixed manner.
  • GPON and XG(S)-PON may coexist in the same ODN (Optical Distribution Network), that is, there are both GPON and XG(S)-PON systems in the same ODN.
  • ODN Optical Distribution Network
  • BWmap bandwidth allocation result that changes dynamically, that is, the bandwidth allocation results of GPON and XG(S)-PON change dynamically over time. Therefore, at a certain moment, the bandwidths of two ONUs that affect each other may or may not overlap, and it is difficult to locate whether there is an OOB crosstalk fault between them. In addition, since the system functions are fixed, it is impossible to modify the system functions to achieve functions such as OOB crosstalk fault location and avoidance.
  • the embodiment of the present application proposes a method for realizing OOB crosstalk positioning in an existing system.
  • the crosstalk fault detection method of the first embodiment of the present application includes:
  • the capture of the bandwidth allocation result can be triggered in a variety of ways. For example, receiving a crosstalk fault detection instruction issued by the network management system triggers the capture of the bandwidth allocation result; or setting a timer to regularly trigger the capture of the bandwidth allocation result. Among them, the network management system sends the crosstalk fault detection instruction, which can be issued when a bit error occurs in the received data at the OLT network terminal side, or it can be issued during routine maintenance and detection.
  • the bandwidth allocation results of different channels in the network at the current moment are captured.
  • the bandwidth allocation results of different channels of GPON and XG(S)-PON systems include multiple bandwidth entries, which are T-CONTs (transmission containers) allocated to the system ONUs, and each bandwidth entry includes the start time and end time of the bandwidth allocation, or includes the start time and time length of the bandwidth allocation, and then converted into the start time and end time.
  • the bit error situation when the network terminal side receives data can be obtained at the same time.
  • the bandwidth allocation results of different channels are analyzed to determine whether the bandwidth entries overlap in time sequence, thereby determining whether there is bandwidth overlap between the optical network units corresponding to the overlapping bandwidth entries.
  • the start time of the optical network unit bandwidth allocation of the first channel is within the range of the start time and end time of the optical network unit bandwidth allocation of the second channel, or the end time of the optical network unit bandwidth allocation of the first channel is within the range of the start time and end time of the optical network unit bandwidth allocation of the second channel, it is determined that there is bandwidth overlap between the optical network unit of the first channel and the optical network unit of the second channel.
  • the start time of the optical network unit bandwidth allocation of the second channel is within the range of the start time and end time of the optical network unit bandwidth allocation of the first channel, or the end time of the optical network unit bandwidth allocation of the second channel is within the range of the start time and end time of the optical network unit bandwidth allocation of the first channel, it is determined that there is bandwidth overlap between the optical network unit of the second channel and the optical network unit of the first channel.
  • the ONU of XG(S)-PON with bandwidth overlap with the ONU on the GPON OLT side is determined, and the ONU is determined as the crosstalk fault source.
  • clock synchronization of different channels is required to ensure that bandwidth allocation times of different channels are based on the same start time, thereby ensuring the accuracy of bandwidth overlap determination.
  • the embodiment of the present application does not require modification of the functions of the existing system. Instead, during the network transmission process, the bandwidth allocation results of different channels are captured, and the bandwidth allocation results are analyzed to determine the situation of the crosstalk fault.
  • the process of analyzing the bandwidth allocation result to determine the crosstalk fault condition is as follows:
  • the optical network units of other channels whose bandwidth overlaps with the optical network unit with bit errors in time sequence are determined, and they are placed in the fault source set with crosstalk faults.
  • the bandwidth entry corresponding to the optical network unit where the bit error occurs is determined from the captured bandwidth allocation result of the GPON OLT, which is referred to as the first bandwidth entry. Then, the second bandwidth entry that overlaps with the first bandwidth entry in timing is determined from the captured bandwidth allocation result of the XG(S)-PON. Finally, the optical network unit corresponding to the second bandwidth entry is obtained. If the bit error still exists, the optical network unit is regarded as a crosstalk fault source and placed in the fault source set of the crosstalk fault.
  • the process of analyzing the bandwidth allocation result to determine the crosstalk fault situation is as follows:
  • the captured bandwidth allocation results of different channels are compared in time sequence, and the optical network units with overlapping bandwidth in time sequence are determined as a set without crosstalk fault.
  • the bandwidth allocation of the captured GPON OLT is In the results and the bandwidth allocation results of XG(S)-PON, the optical network units corresponding to the bandwidth entries that do not overlap in timing are determined. If no bit error occurs, it is determined that there is no OOB crosstalk fault, and the optical network units are placed in the set without crosstalk fault, thereby narrowing the scope of optical network units with potential OOB crosstalk, providing strong support for the subsequent rapid positioning of OOB crosstalk faults.
  • the crosstalk fault detection method of the second embodiment of the present application further includes:
  • the network management system when crosstalk fault detection is required, the network management system will send commands to each coexisting system, such as the GPON OLT and XG(S)-PON system, so that each system solidifies the bandwidth allocation result at the current moment, that is, each system stops performing bandwidth allocation results and continues to send the current bandwidth allocation results.
  • each coexisting system such as the GPON OLT and XG(S)-PON system
  • the bandwidth crosstalk fault of the network is analyzed based on the solidified bandwidth allocation results, the solidified bandwidth allocation results are canceled, and each system can perform normal bandwidth allocation.
  • the embodiment of the present application can more accurately detect crosstalk fault conditions by solidifying the bandwidth allocation results.
  • the crosstalk fault detection method of the third embodiment of the present application further includes:
  • the obtained bandwidth allocation result and the bit error situation when the network terminal side receives data are stored, so as to obtain the bandwidth crosstalk fault situation of the network according to the stored information analysis later.
  • the bit error situation when the network terminal receives data can be obtained at the same time, and the bandwidth allocation result and the bit error situation are stored together.
  • the stored information can be retrieved to analyze the bandwidth allocation result and determine the OOB crosstalk fault situation.
  • the embodiment of the present application stores the bandwidth allocation results and the bit error conditions, thereby achieving flexibility in crosstalk fault detection. For example, a suitable time can be selected to perform crosstalk fault detection as needed, or crosstalk fault detection can be performed offline.
  • the above embodiments can be applied to OOB crosstalk fault detection between GPON ONU and XG(S)-PON ONU, and OOB crosstalk fault detection between different upstream channels.
  • the OOB crosstalk fault detection process can also be performed by referring to the embodiments of the present application, which will not be repeated here.
  • the above embodiments may include the following application scenarios when applied specifically.
  • the error is reported to the network management system.
  • the operation and maintenance personnel can send commands to the GPON and XG(S)-PON systems through the network management system to solidify the bandwidth allocation results of GPON and XG(S)-PON, that is, GPON and XG(S)-PON stop updating the bandwidth allocation results and continue to send the current bandwidth allocation results.
  • the network management system can also automatically trigger and send commands based on bit error events.
  • This implementation is used to timely detect two ONUs that have OOB crosstalk faults with each other by curing BWmap and checking the bandwidth allocation overlap when a bit error occurs, so that operation and maintenance personnel can further take engineering measures to eliminate and avoid the OOB crosstalk fault.
  • the OOB crosstalk of XG(S)-PON ONU to GPON ONU is taken as an example.
  • the OOB crosstalk processing of GPON ONU to XG(S)-PON ONU is similar and will not be repeated.
  • the operation and maintenance personnel can also send commands to the GPON OLT and XG(S)-PON OLT through the network management system to solidify the bandwidth allocation results of the GPON OLT and XG(S)-PON OLT, check the XG(S)-PON ONUs and GPON ONUs that currently have overlapping bandwidths, and if it is confirmed that no bit errors have occurred, determine that there is no OOB crosstalk fault between these ONUs, and put these ONUs into a set where there is no crosstalk fault.
  • This implementation method is used in daily maintenance and detection. By solidifying BWmap and checking the bandwidth allocation overlap and error-free conditions, it is determined which ONUs do not have OOB crosstalk faults, thereby narrowing the scope of ONUs with potential OOB crosstalk faults and providing strong support for subsequent rapid positioning of OOB crosstalk faults.
  • the OOB crosstalk of XG(S)-PON ONU to GPON ONU is taken as an example.
  • the OOB crosstalk processing of GPON ONU to XG(S)-PON ONU is similar and will not be repeated.
  • the network management system can initiate the OOB crosstalk fault detection process at an appropriate time to solidify the BWmap of GPON OLT and XG(S)-PON OLT. For example, when a bit error is detected on the GPON OLT side, It may be required for routine testing.
  • the bandwidth allocation results of GPON OLT, the bandwidth allocation results of XG(S)-PON, the reception error situation on the GPON OLT side, and the reception error situation on the XG(S)-PON OLT side can be obtained simultaneously. Then, this information can be obtained at a specific time, and the OOB crosstalk fault situation can be analyzed in real time based on this information. Of course, it can also be stored for subsequent offline analysis of the OOB crosstalk fault situation.
  • the embodiment of the present application further provides a crosstalk fault detection device, including:
  • a capture module 10 is configured to capture bandwidth allocation results of different channels in the network
  • the fault analysis module 20 is configured to check the bandwidth allocation overlap of the optical network units of different channels according to the captured bandwidth allocation results of different channels, and obtain the bandwidth crosstalk fault of the network.
  • This embodiment implements the principle of crosstalk fault detection between channels with different network bandwidths. Please refer to the above embodiments and will not be repeated here.
  • the present application also provides a network system, which includes various coexisting subsystems and a crosstalk fault detection device.
  • the crosstalk fault detection device includes a memory and a processor.
  • the memory stores a processing program. When the processing program is executed by the processor, the steps of the crosstalk fault detection method in any of the above embodiments are implemented.
  • the present application also provides a computer-readable storage medium, wherein a processing program is stored on the storage medium.
  • a processing program is stored on the storage medium.
  • An embodiment of the present application further provides a computer program product, which includes a computer program code.
  • the computer program code runs on a computer, the computer executes the methods in the above various possible implementation modes.
  • the units in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.
  • the technical solution of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) as above, and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, a controlled terminal, or a network device, etc.) to execute the method of each embodiment of the present application.
  • a storage medium such as ROM/RAM, magnetic disk, optical disk
  • a terminal device which can be a mobile phone, a computer, a server, a controlled terminal, or a network device, etc.
  • a computer program product includes one or more computer instructions.
  • the computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
  • Computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means.
  • the computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. Available media can be magnetic media (e.g., floppy disk, storage disk, tape), optical media (e.g., DVD), or semiconductor media (e.g., solid-state storage disk Solid State Disk (SSD)), etc.

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Abstract

本申请提出了一种网络带宽的串扰故障检测方法，包括：抓取网络中不同通道的带宽分配结果；根据所抓取的不同通道的带宽分配结果，检查不同通道的光网络单元的带宽分配重叠情况，并根据OLT侧误码情况，获得网络的带宽串扰故障情况。本申请还提出一种串扰故障检测装置、网络系统及计算机存储介质。

Description

串扰故障检测方法、装置、网络系统及计算机存储介质
相关申请
本申请要求于2022年10月18日申请的、申请号为202211275996.8的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及网络通信技术领域，具体涉及一种网络带宽的串扰故障检测方法、装置、网络系统及计算机存储介质。
背景技术
目前FTTx市场部署了大量GPON(Gigabit-Capable PON，吉比特无源光网络)系统，随着标准升级和用户需求增加，GPON系统开始逐步向XG(S)-PON升级演进。GPON和XG(S)-PON采用波分方式共存，即GPON和XG(S)-PON的下行波长不一样，上行波长也不一样。在升级演进过程中，GPON和XG(S)-PON可能会在同一个ODN(Optical Distribution Network，光配线网)中同时共存，即同一个ODN中既有GPON系统也有XG(S)-PON系统。
在实际测试中，发现存在XG(S)-PON ONU(Optical Network Unit，光网络单元)影响GPON OLT(Optical Line Terminal，光线路终端)接收灵敏度从而导致误码的情况。如图4所示，XG-PON ONU的发射光信号中在GPON波段携带较高功率谱密度信号。对此，标准组织提出要对XG(S)-PON ONU的OOB PSD(Out of Band Power Spectral Density，带外功率谱密度)进行限定。但是需要增加XG(S)-PON ONU的成本，而且由于ONU侧数量大，总体成本较高。
因此，有必要提出一种低成本解决OLT侧接收数据时出现误码的问题的方案。
发明内容
针对上述技术问题，本申请提供一种网络带宽的串扰故障检测方法、装置、网络系统及计算机存储介质，旨在低成本解决OLT侧接收数据时出现误码的问题。
第一方面，本申请提供一种网络带宽的串扰故障检测方法，包括：
抓取网络中不同通道的带宽分配结果；
根据所抓取的不同通道的带宽分配结果，检查不同通道的光网络单元的带宽分配重叠情况，并根据网络终端侧误码情况，获得网络的带宽串扰故障结果。
本申请实施例还提供一种网络带宽的串扰故障检测装置，包括：
抓取模块，配置为抓取网络中不同通道的带宽分配结果；
故障分析模块，配置为根据所抓取的不同通道的带宽分配结果，检查不同通道的光网络单元的带宽分配重叠情况，并根据网络终端侧误码情况，获得网络的带宽串扰故障情况。
本申请实施例还提供一种网络系统，包括串扰故障检测装置，所述串扰故障检测装置包括处理器和存储器，所述存储器上存储有对网络带宽的串扰故障进行检测的程序，该程序供所述处理器调用，执行上述任意实施方式的串扰故障检测方法。
本申请实施例还提供一种计算机存储介质，存储有计算机处理程序，所述计算机处理程序供处理器调用，执行上述任意实施方式的串扰故障检测方法。
本申请实施例通过在网络传输过程中，通过抓取不同通道的带宽分配结果，从而对带宽分配结果进行分析，确定串扰故障的情况，从而不需要对现有系统的功能进行修改，而且实现成本低，能快速对串扰故障进行定位，解决OLT侧接收数据时出现误码的问题。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本申请的实施例，并与说明书一起用于解释本申请的原理。为了更清楚地说明本申请实施例的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，对于本领域普通技术人员而言，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为实现本申请第一实施例的网络带宽的串扰故障检测方法的流程示意图；
图2为本申请第二实施例的网络带宽的串扰故障检测方法的流程示意图；
图3为本申请实施例的网络带宽的串扰故障检测装置的功能模块示意图；
图4为本申请相关的网络系统的结构示意图，其中该网络系统包括 XG(S)-PON系统和GPON系统。
本申请目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。通过上述附图，已示出本申请明确的实施例，后文中将有更详细的描述。这些附图和文字描述并不是为了通过任何方式限制本申请构思的范围，而是通过参考特定实施例为本领域技术人员说明本申请的概念。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本申请相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本申请的一些方面相一致的装置和方法的例子。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素，此外，本申请不同实施例中具有同样命名的部件、特征、要素可能具有相同含义，也可能具有不同含义，其具体含义需以其在该具体实施例中的解释或者进一步结合该具体实施例中上下文进行确定。
应当理解，尽管在本文可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本文范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，如在此所使用的词语"如果"可以被解释成为"在……时"或"当……时"或"响应于确定"。再者，如同在本文中所使用的，单数形式“一”、“一个”和“该”旨在也包括复数形式，除非上下文中有相反的指示。应当进一步理解，术语“包含”、“包括”表明存在所述的特征、步骤、操作、元件、组件、项目、种类、和/或组，但不排除一个或多个其他特征、步骤、操作、元件、组件、项目、种类、和/或组的存在、出现或添加。本申请使用的术语“或”、“和/或”、“包括以下至少一个”等可被解释为包括性的，或意味着任一个或任何组合。例如，“包括以下至少一个：A、B、C”意味着“以下任一个： A；B；C；A和B；A和C；B和C；A和B和C”，再如，“A、B或C”或者“A、B和/或C”意味着“以下任一个：A；B；C；A和B；A和C；B和C；A和B和C”。仅当元件、功能、步骤或操作的组合在某些方式下内在地互相排斥时，才会出现该定义的例外。
虽然本申请实施例中的流程图中的各个步骤按照箭头的指示依次显示，但是这些步骤并不是必然按照箭头指示的顺序依次执行。除非本文中有明确的说明，这些步骤的执行并没有严格的顺序限制，其可以以其他的顺序执行。而且，图中的至少一部分步骤可以包括多个子步骤或者多个阶段，这些子步骤或者阶段并不必然是在同一时刻执行完成，而是可以在不同的时刻执行，其执行顺序也不必然是依次进行，而是可以与其他步骤或者其他步骤的子步骤或者阶段的至少一部分轮流或者交替地执行。
取决于语境，如在此所使用的词语“如果”、“若”可以被解释成为“在……时”或“当……时”或“响应于确定”或“响应于检测”。类似地，取决于语境，短语“如果确定”或“如果检测(陈述的条件或事件)”可以被解释成为“当确定时”或“响应于确定”或“当检测(陈述的条件或事件)时”或“响应于检测(陈述的条件或事件)”。
在本文中，采用了诸如S10、S20等步骤代号，其目的是为了更清楚简要地表述相应内容，不构成顺序上的实质性限制，本领域技术人员在具体实施时，可能会先执行S20后执行S10等，但这些均应在本申请的保护范围之内。
此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。
在后续的描述中，使用用于表示元件的诸如“模块”、“部件”或者“单元”的后缀仅为了有利于本申请的说明，其本身没有特定的意义。因此，“模块”、“部件”或者“单元”可以混合地使用。
在GPON向XG(S)-PON升级演进的过程中，GPON和XG(S)-PON可能会在同一个ODN(Optical Distribution Network，光配线网)中同时共存，即同一个ODN中既有GPON系统也有XG(S)-PON系统。
在实际使用中，XG(S)-PON的光网络单元和GPON的光网络单元存在带宽重叠的情况，从而使得带宽重叠的两个光网络单元同时传输信号时存在串扰的情况。针对这种不同通道之间的干扰问题，GPON和XG(S)-PON的协同DBA(Dynamically Bandwidth Assignment，动态带宽分配)是最优解决方案。
但是现有系统中，OLT根据ONU的流量情况动态分配带宽，则每个周期的 BWmap(bandwidth map，带宽分配图)即带宽分配结果是动态变化的，即GPON的带宽分配结果和XG(S)-PON的带宽分配结果是随着时间动态变化的，因此在某个时刻，互相影响的两个ONU的带宽可能存在重叠，也可能不存在重叠，它们之间是否存在OOB串扰故障，就较难定位。而且由于系统功能固定，无法通过修改系统功能来实现OOB串扰故障定位和避免等功能。
因此，本申请实施例提出一种能在现有系统中实现OOB串扰定位的方法。参照图1，本申请第一实施例的串扰故障检测方法包括：
S10，抓取网络中不同通道的带宽分配结果。
一实施例中，上述带宽分配结果的抓取，可以有多种触发方式。如接收到网管系统下发的串扰故障检测指令触发带宽分配结果的抓取；或者通过定时器设定时间，定时触发带宽分配结果的抓取。其中，网管系统下发串扰故障检测指令，可以是在OLT网络终端侧接收数据发生误码时下发，也可以是在日常维护检测时下发。
一实施例中，当接收到网管系统下发的串扰故障检测指令时，抓取网络中当前时刻不同通道的带宽分配结果。例如GPON和XG(S)-PON系统不同通道的带宽分配结果。一实施例中，带宽分配结果包括多个带宽条目，这些带宽条目是分配给系统ONU的T-CONT(传输容器)，每个带宽条目包括带宽分配的开始时间和结束时间，或者包括带宽分配的开始时间和时间长度，再换算成开始时间和结束时间。
另一实施例中，当定时抓取网络中不同通道的带宽分配结果，可以同时获取网络终端侧接收数据时发生误码的情况。
S30，根据所抓取的不同通道的带宽分配结果，检查不同通道的光网络单元的带宽分配重叠情况，并根据网络终端侧误码情况，获得网络的带宽串扰故障结果。
一实施例中，对不同通道的带宽分配结果进行分析，判断带宽条目在时序上是否重叠，从而确定存在重叠的带宽条目对应的光网络单元之间存在带宽重叠。具体如下：
当第一通道的光网络单元带宽分配的开始时间位于第二通道的光网络单元带宽分配的开始时间和结束时间的范围内，或者第一通道的光网络单元带宽分配的结束时间位于第二通道的光网络单元带宽分配的开始时间和结束时间的范围内，确定第一通道的光网络单元和第二通道的光网络单元之间存在带宽重叠。
当第二通道的光网络单元带宽分配的开始时间位于第一通道的光网络单元带宽分配的开始时间和结束时间的范围内，或者第二通道的光网络单元带宽分配的结束时间位于第一通道的光网络单元带宽分配的开始时间和结束时间的范围内，确定第二通道的光网络单元和第一通道的光网络单元之间存在带宽重叠。
确定存在带宽重叠的光网络单元后，检查误码是否存在，若误码继续存在，则确定对应的光网络单元为串扰故障源。以GPON OLT侧存在误码为例，则确定与GPON OLT侧的ONU存在带宽重叠的XG(S)-PON的ONU，并将该ONU确定为串扰故障源。
在一些实施例中，在进行带宽重叠判断之前，需要对不同通道进行时钟同步，以保证不同通道的带宽分配时间是基于同一起始时间，从而保证带宽重叠判断的准确性。
本申请实施例不需要对现有系统的功能进行修改，而是在网络传输过程中，通过抓取不同通道的带宽分配结果，从而对带宽分配结果进行分析，确定串扰故障的情况。
在一实施例中，当网管系统在网络终端OLT侧接收数据发生误码的情况下下发的串扰故障检测指令或者定时抓取的数据中存在误码的情况时，则对带宽分配结果进行分析确定串扰故障情况的过程如下：
按照时序对比所抓取的不同通道的带宽分配结果，确定与发生误码的光网络单元的带宽在时序上存在重叠的其他通道的光网络单元，并将其放至存在串扰故障的故障源集合。
若GPON OLT侧接收数据时发生误码，则从抓取的GPON OLT的带宽分配结果中，确定发生误码的光网络单元对应的带宽条目，此处称为第一带宽条目；然后从抓取的XG(S)-PON的带宽分配结果中，确定和第一带宽条目在时序上重叠的第二带宽条目；最后获取第二带宽条目对应的光网络单元，若误码仍然存在，则将该光网络单元作为存在串扰故障源，并放至串扰故障的故障源集合中。
在另一实施例中，当网管系统在日常维护中下发的串扰故障检测指令，此时，网络终端OLT侧接收数据时未发生误码或者定时抓取的数据中不存在误码的情况时，则对带宽分配结果进行分析确定串扰故障情况的过程如下：
按照时序对比所抓取的不同通道的带宽分配结果，确定带宽在时序上存在重叠的光网络单元，作为不存在串扰故障的集合。
具体地，若GPON OLT侧未发生误码，则从抓取的GPON OLT的带宽分配 结果和XG(S)-PON的带宽分配结果中，确定在时序上不存在重叠的带宽条目对应的光网络单元，若未发生误码，则确定不存在OOB串扰故障，并将该光网络单元均放至不存在串扰故障的集合，从而可以缩小潜在OOB串扰的光网络单元的范围，为后续快速定位OOB串扰故障提供了有力的支撑。
参照图2，基于本申请第一实施例的串扰故障方法，本申请第二实施例的串扰故障检测方法还包括：
S20，接收到网管系统下发的串扰故障检测指令时，将当前时刻不同通道的带宽分配结果进行固化，直到获得网络的带宽串扰故障情况后，取消固化的带宽分配结果。
一具体实施例中，当需要进行进行串扰故障检测时，网管系统将分别向各共存的系统发送命令，例如GPON OLT和XG(S)-PON系统，使得各系统将当前时刻的带宽分配结果进行固化，即各系统停止进行带宽分配结果，继续发送当前的带宽分配结果。当根据固化的带宽分配结果分析得到网络的带宽串扰故障情况后，取消固化的带宽分配结果，则各系统可以进行正常的带宽分配。
本申请实施例通过将带宽分配结果进行固化后，可以更加准确地检测串扰故障情况。
基于上述实施例，本申请第三实施例的串扰故障检测方法还包括：
将获取的带宽分配结果和网络终端侧接收数据时发生误码的情况进行存储，以供后续根据存储的信息分析获得网络的带宽串扰故障情况。
上述实施例中，若抓取了带宽分配结果后，可以同时获取网络终端侧接收数据时发生误码的情况，并将带宽分配结果及误码情况一起进行存储。在需要时，可以调取存储的信息，进行带宽分配结果的分析并确定OOB串扰故障情况。
本申请实施例通过将带宽分配结果和误码情况进行存储，从而实现了串扰故障检测的灵活性，例如可以根据需要选择合适的时间进行串扰故障检测，也可以离线进行串扰故障检测。
上述实施例可应用于GPON ONU和XG(S)-PON ONU之间的OOB串扰故障检测，不同上行通道之间的OOB串扰故障检测，也可以参考本申请实施例进行OOB串扰故障检测处理，不再赘述。
上述实施例在具体应用时，可以包括以下几种应用场景。
应用示例一
当GPON OLT侧接收ONU上行数据发生误码时，向网管系统报告误码事 件，运维人员可以通过网管系统向GPON和XG(S)-PON系统发送命令，固化GPON和XG(S)-PON的带宽分配结果，即GPON和XG(S)-PON停止更新带宽分配结果，继续发送当前的带宽分配结果。当然，也可以网管系统根据误码事件自动触发并发送命令。
读取此时的GPON的BWmap和XG(S)-PON的BWmap，在时序上进行比对，包括，确定发生误码的GPON ONU相对应的带宽条目，确定和这些带宽条目在时序上有重叠的XG(S)-PON ONU对应的带宽条目，检查这些带宽条目的T-CONT属于哪个ONU，在误码继续存在的情况下，则把这些XG(S)-PON ONU列为产生OOB串扰故障的源头。然后取消固化BWmap，继续正常带宽分配过程。重复此过程，逐步缩小产生OOB串扰故障的XG(S)-PON ONU范围，甚至确定唯一的一个XG(S)-PON ONU。
该实施方式用于在发生误码时，通过固化BWmap，检查带宽分配重叠情况，及时检测到彼此产生OOB串扰故障的两个ONU，以便运维人员可以进一步采取工程措施消除和规避OOB串扰故障。
本实施方式中，以XG(S)-PON ONU对GPON ONU的OOB串扰为例，实际上GPON ONU对XG(S)-PON ONU的OOB串扰处理是类似的，不再赘述。
应用示例二
在日常维护检测中，OLT侧接收一般没有误码，此时运维人员也可以通过网管系统向GPON OLT和XG(S)-PON OLT发送命令，固化GPON OLT和XG(S)-PON OLT带宽分配结果，检查当前存在带宽重叠的XG(S)-PON ONU和GPON ONU，在确认未发生误码情况下，则确定这些ONU彼此不存在OOB串扰故障，将这些ONU放至不存在串扰故障的集合。
该实施方式用于日常维护检测中，通过固化BWmap，通过检查带宽分配重叠情况以及无误码情况，判断哪些ONU之间不存在OOB串扰故障，以缩小存在潜在OOB串扰故障ONU的范围，为后续快速定位OOB串扰故障提供有力支撑。
本实施方式中，以XG(S)-PON ONU对GPON ONU的OOB串扰为例，实际上GPON ONU对XG(S)-PON ONU的OOB串扰处理是类似的，不再赘述。
用示例三
网管系统可以在适当的时候发起OOB串扰故障检测流程，固化GPON OLT和XG(S)-PON OLT的BWmap，例如可以是在GPON OLT侧检测到误码时，也 可以是常规检测需要。
判断GPON OLT或者XG(S)-PON OLT侧是否检测到误码。如果GPON OLT或者XG(S)-PON OLT侧检测到误码，确定发生误码的ONU，并检查与该ONU带宽条目在时序上重叠的ONU的带宽条目，这些ONU被暂列为OOB串扰故障源，与之前的OOB串扰故障源、无OOB串扰故障集合进行综合处理，更新OOB串扰故障源。取消BWmap固化，继续正常带宽分配，并根据需要继续固化BWmap。
如果GPON OLT或者XG(S)-PON OLT侧未检测到误码，则检查存在时序重叠的带宽条目的ONU，这些ONU之间不存在OOB串扰故障，更新无OOB串扰故障集合。取消BWmap固化，继续正常带宽分配，并根据需要继续固化BWmap。
应用示例四
在网络传输过程中，可以同时获取GPON OLT的带宽分配结果、XG(S)-PON的带宽分配结果、GPON OLT侧接收误码情况、XG(S)-PON OLT侧接收误码情况，然后就可以在特定时间获取这些信息，并针对这些信息，可以进行实时分析OOB串扰故障情况，当然也可以先存储以供后续离线分析OOB串扰故障情况。
以上所列举的仅为参考示例，为了避免冗余，这里不再一一列举，实际开发或运用中，可以根据实际需要灵活组合，但任一组合均属于本申请的技术方案，也就覆盖在本申请的保护范围之内。
参照图3，本申请实施例还提供一种串扰故障检测装置，包括：
抓取模块10，配置为抓取网络中不同通道的带宽分配结果；
故障分析模块20，配置为根据所抓取的不同通道的带宽分配结果，检查不同通道的光网络单元的带宽分配重叠情况，获得网络的带宽串扰故障情况。
本实施例实现网络带宽不同通道之间的串扰故障检测的原理，请参照上述各实施例，在此不再赘述。
本申请还提供一种网络系统，网络系统包括各个共存的子系统以及串扰故障检测装置，串扰故障检测装置包括存储器、处理器，存储器上存储有处理程序，处理程序被处理器执行时实现上述任一实施例中的串扰故障检测方法的步骤。
本申请还提供一种计算机可读存储介质，存储介质上存储有处理程序，处 理程序被处理器执行时实现上述任一实施例中的串扰故障检测方法的步骤。
在本申请提供的网络系统和计算机可读存储介质的实施例中，可以包含任一上述处理方法实施例的全部技术特征，说明书拓展和解释内容与上述方法的各实施例基本相同，在此不再做赘述。
本申请实施例还提供一种计算机程序产品，计算机程序产品包括计算机程序代码，当计算机程序代码在计算机上运行时，使得计算机执行如上各种可能的实施方式中的方法。
可以理解，上述场景仅是作为示例，并不构成对于本申请实施例提供的技术方案的应用场景的限定，本申请的技术方案还可应用于其他场景。例如，本领域普通技术人员可知，随着系统架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
上述本申请实施例序号仅仅为了描述，不代表实施例的优劣。
本申请实施例方法中的步骤可以根据实际需要进行顺序调整、合并和删减。
本申请实施例设备中的单元可以根据实际需要进行合并、划分和删减。
在本申请中，对于相同或相似的术语概念、技术方案和/或应用场景描述，一般只在第一次出现时进行详细描述，后面再重复出现时，为了简洁，一般未再重复阐述，在理解本申请技术方案等内容时，对于在后未详细描述的相同或相似的术语概念、技术方案和/或应用场景描述等，可以参考其之前的相关详细描述。
在本申请中，对各个实施例的描述都各有侧重，某个实施例中没有详述或记载的部分，可以参见其它实施例的相关描述。
本申请技术方案的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本申请记载的范围。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在如上的一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，被控终端，或者网络设备等)执行本申请每个实施例的方法。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行计算机程序指令时，全部或部分地产生按照本申请实施例的流程或功能。计算机可以是通用计算机、专用计算机、计算机网络，或者其他可编程装置。计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线)或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。可用介质可以是磁性介质，(例如，软盘、存储盘、磁带)、光介质(例如，DVD)，或者半导体介质(例如固态存储盘Solid State Disk(SSD))等。
以上仅为本申请的优选实施例，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。

Claims (11)

  1. 一种网络带宽的串扰故障检测方法，包括：
    抓取网络中不同通道的带宽分配结果；
    根据所抓取的不同通道的带宽分配结果，检查不同通道的光网络单元的带宽分配重叠情况，并根据网络终端侧误码情况，获得网络的带宽串扰故障结果。
  2. 根据权利要求1所述的串扰故障检测方法，其中，所述抓取网络中不同通道的带宽分配结果的步骤包括：
    接收到网管系统下发的串扰故障检测指令时，抓取网络中当前时刻不同通道的带宽分配结果。
  3. 根据权利要求1所述的串扰故障检测方法，其中，所述抓取网络中不同通道的带宽分配结果的步骤包括：定时抓取网络中不同通道的带宽分配结果；
    所述带宽串扰故障检测方法还包括：获取网络终端侧接收数据时发生误码的情况。
  4. 根据权利要求2或3所述的串扰故障检测方法，其中，所述根据所抓取的不同通道的带宽分配结果，检查不同通道的光网络单元的带宽分配重叠情况，并根据网络终端侧误码情况，获得网络的带宽串扰故障情况的步骤包括：
    若存在误码时，按照时序对比所抓取的不同通道的带宽分配结果，确定与发生误码的光网络单元的带宽在时序上存在重叠的其他通道的光网络单元，并将其放至存在串扰故障的故障源集合。
  5. 根据权利要求2或3所述的串扰故障检测方法，其中，所述根据所抓取的不同通道的带宽分配结果，检查不同通道的光网络单元的带宽分配重叠情况，并根据网络终端侧误码情况，获得网络的带宽串扰故障情况的步骤包括：
    若不存在误码时，按照时序对比所抓取的不同通道的带宽分配结果，确定带宽在时序上存在重叠的光网络单元，并将其放至不存在串扰故障的集合。
  6. 根据权利要求1所述的串扰故障检测方法，其中，所述带宽分配结果包括带宽分配的开始时间和结束时间；所述带宽串扰故障检测方法还包括：
    当第一通道的光网络单元带宽分配的开始时间位于第二通道的光网络单元带宽分配的开始时间和结束时间的范围内，或者第一通道的光网络单元带宽分配的结束时间位于第二通道的光网络单元带宽分配的开始时间和结束时间的范围内，确定第一通道的光网络单元和第二通道的光网络单元之间存在带宽重叠；
    当第二通道的光网络单元带宽分配的开始时间位于第一通道的光网络单元带宽分配的开始时间和结束时间的范围内，或者第二通道的光网络单元带宽分配的结束时间位于第一通道的光网络单元带宽分配的开始时间和结束时间的范围内，确定第一通道的光网络单元和第二通道的光网络单元之间存在带宽重叠。
  7. 根据权利要求1所述的串扰故障检测方法，其中，所述带宽串扰故障检测方法还包括：
    接收到网管系统下发的串扰故障检测指令时，将当前时刻不同通道的带宽分配结果进行固化，直到获得网络的带宽串扰故障情况后，取消固化的带宽分配结果。
  8. 根据权利要求1所述的串扰故障检测方法，其中，所述带宽串扰故障检测方法还包括：
    将获取的带宽分配结果和网络终端侧接收数据时发生误码的情况进行存储，以供后续根据存储的信息分析获得网络的带宽串扰故障情况。
  9. 一种网络带宽的串扰故障检测装置，包括：
    抓取模块，配置为抓取网络中不同通道的带宽分配结果；
    故障分析模块，配置为根据所抓取的不同通道的带宽分配结果，检查不同通道的光网络单元的带宽分配重叠情况，并根据网络终端侧误码情况，获得网络的带宽串扰故障情况。
  10. 一种网络系统，其中，包括串扰故障检测装置，所述串扰故障检测装置包括处理器和存储器，所述存储器上存储有对网络带宽的串扰故障进行检测的程序，该程序供所述处理器调用，执行权利要求1-8中任一项所述的串扰故障检测方法。
  11. 一种计算机存储介质，其中，存储有计算机处理程序，所述计算机处理程序供处理器调用，执行权利要求1-8中任一项所述的串扰故障检测方法。
PCT/CN2023/098999 2022-10-18 2023-06-07 串扰故障检测方法、装置、网络系统及计算机存储介质 WO2024082650A1 (zh)

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CN101110648A (zh) * 2006-07-18 2008-01-23 华为技术有限公司 检测pon中故障onu的方法
JP2015012325A (ja) * 2013-06-26 2015-01-19 日本電信電話株式会社 クロストーク測定装置及びクロストーク測定方法
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