PON protection method and device
By monitoring the operating parameters and physical status parameters of the target line in the PON protection system, predicting the failure risk and performing protection operations, the problem of business interruption after the failure in the prior art is solved, and network stability and user experience are improved.
Patent Information
- Application Number
- CN202510004079.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2025-05-02
AI Technical Summary
The existing PON protection system performs line switching after a failure occurs, resulting in service interruption and loss, and the failure risk cannot be predicted.
By continuously monitoring the operating parameters and physical status parameters of the target line, predict the failure risk, and perform PON protection and switching operations before the risk occurs.
It effectively reduces business interruption and loss after failure, and improves network stability and user experience.
Smart Images
Figure CN119921848A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of passive optical network, and in particular to a PON protection method and device. Background Art
[0002] PON protection is a technology used in PON (passive optical network) systems to provide fast protection switching to ensure that services can be quickly restored when a trunk optical fiber or other key components fail, thereby ensuring user experience and network stability. PON protection technology uses different protection mechanisms and strategies to achieve redundant protection of key components such as trunk optical fibers, optical distribution networks, and optical network units to cope with various possible failure situations.
[0003] However, all current PON protection systems and solutions follow the "fault monitoring > fault occurrence > protective line switching" model, that is, continuous monitoring of PON network-related signals, and when changes are detected in PON-related signals, it is determined that a fiber break, optical module damage, or other faults have occurred, and then PON protection switching is initiated. The basic idea of this model is to perform line switching after a fault occurs. During line faults and line switching, services will be greatly affected by line interruptions. Summary of the invention
[0004] The present application provides a PON protection method and device, which can solve the related technical problems existing in the above-mentioned prior art.
[0005] In a first aspect, an embodiment of the present application provides a PON protection method, which adopts the following technical solution:
[0006] A PON protection method, the method comprising:
[0007] Obtaining operating parameters of a target line during signal transmission and / or physical state parameters of the target line;
[0008] Determining whether a target line has a fault risk according to the operating parameters and / or physical state parameters;
[0009] If it exists, perform PON protection and switching operations.
[0010] In combination with the first aspect, in one implementation, the operating parameter includes at least one of a bit error signal, optical power and a LOS signal; and the physical state parameter includes at least a vibration signal of the target line.
[0011] In combination with the first aspect, in one implementation, judging whether there is a fault risk of the target line according to the operating parameter and / or the physical state parameter comprises the following steps:
[0012] Determine whether the target line meets a preset primary risk index according to the error signal within the most recently set first time period or the error signal within the set first period; wherein the primary risk index is related to the error signal transmitted by the target line and is lower than the same type of index corresponding to the target line in a fault state;
[0013] At least when the first-level risk indicator is met, it is determined that the target line has a failure risk.
[0014] In combination with the first aspect, in one implementation, judging whether the target line meets a preset primary risk indicator according to the error signal within the most recently set first time period or the error signal within the set first period includes the following steps:
[0015] Calculate the bit error rate of the signal transmitted by the target line within the most recent set first time length or the most recent set first period according to the bit error signal within the most recent set first time length or the most recent set first period;
[0016] According to whether the bit error rate is greater than a preset bit error rate risk threshold, judging whether it meets the preset first-level risk index; wherein the bit error rate risk threshold is less than the bit error rate corresponding to the target line fault state;
[0017] If it is greater, it is determined to meet the first-level risk indicators.
[0018] In combination with the first aspect, in one implementation, after judging whether the target line state meets the preset primary risk index according to the error signal within the most recently set first time period or the error signal within the set first period, and before judging that the target line has a fault risk when at least the primary risk index is met, the following steps are included:
[0019] Determine whether the target line state meets a preset secondary risk indicator according to a plurality of optical power signals continuously collected within a recently set second time period or a plurality of optical power signals continuously collected within a set second period; wherein the secondary risk indicator is related to the optical power signal of the target line and is lower than the same type of indicator corresponding to the target line in a fault state;
[0020] In the step of determining that the target line has a fault risk when at least the first-level risk indicator is met,
[0021] When at least the first-level risk indicator and the second-level risk indicator are met, it is determined that the target line has a failure risk.
[0022] In combination with the first aspect, in one embodiment, judging whether the target line state meets the preset secondary risk indicator according to the multiple optical power signals continuously collected within the most recently set second time period or the multiple optical power signals continuously collected within the set second period includes the following steps:
[0023] Determine an average optical power value of a plurality of optical power signals continuously collected within a recently set second time period or a plurality of optical power signals continuously collected within a set second period;
[0024] If the optical power average value is less than a preset optical power risk judgment value, it is determined that the secondary risk indicator is met; wherein, the optical power risk judgment value is less than the corresponding optical power average value under the target line fault state.
[0025] In combination with the first aspect, in one embodiment, after judging whether the target line state meets the preset secondary risk indicator according to the multiple optical power signals continuously collected within the most recently set second time period or the multiple optical power signals continuously collected within the set second period, and before judging whether the target line has a fault risk when at least the first-level risk indicator is met, the following steps are included:
[0026] According to a plurality of vibration signals and / or LOS signals collected within a recently set third time period or within a set third period, judging whether the state of the target line meets a preset third-level risk index; wherein the third-level risk index is related to the vibration signal and / or LOS signal of the target line;
[0027] In the step of determining that the target line has a fault risk when at least the first-level risk indicator is met,
[0028] When at least the first-level risk indicator, the second-level risk indicator and the third-level risk indicator are met, it is determined that the target line has a fault risk.
[0029] In combination with the first aspect, in one embodiment, judging whether the target line state meets the preset third-level risk index according to multiple vibration signals and / or LOS signals collected within the most recently set third time period or within the set third period includes the following steps:
[0030] Determine a vibration average value of a plurality of vibration signals collected within a recently set third time period or within a set third cycle;
[0031] If the vibration average value is greater than the preset vibration risk judgment value, it is determined to meet the preset third-level risk index.
[0032] In combination with the first aspect, in one embodiment, judging whether the target line state meets the preset third-level risk index according to multiple vibration signals and / or LOS signals collected within the most recently set third time period or within the set third period includes the following steps:
[0033] Determine the number of transitions of the LOS signal collected within the most recently set third time period or within the set third period;
[0034] If the number of jumps is greater than the set number, it is determined that the preset third-level risk indicator is met.
[0035] In a second aspect, an embodiment of the present application provides a PON protection device, which adopts the following technical solution:
[0036] A PON protection device, comprising:
[0037] An acquisition module, configured to acquire a bit error signal during the transmission of a target line signal;
[0038] An acquisition module, configured to acquire operating parameters of a target line during signal transmission and / or physical state parameters of the target line;
[0039] A risk prediction module, for determining whether a target line has a fault risk based on the operating parameters and / or physical state parameters;
[0040] The protection module is configured to perform protection and switching operations of the PON if there is a risk of failure.
[0041] In a third aspect, an embodiment of the present application provides a PON protection device, which adopts the following technical solution:
[0042] A PON protection device comprises a processor, a memory, and a PON protection program stored in the memory and executable by the processor, wherein when the PON protection program is executed by the processor, the steps of the PON protection method described above are implemented.
[0043] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, which adopts the following technical solution:
[0044] A computer-readable storage medium stores a PON protection program, wherein when the PON protection program is executed by a processor, the steps of the PON protection method described above are implemented.
[0045] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:
[0046] By continuously monitoring the operating parameters and / or physical status parameters of the system, the fault risk of the target line that has not yet failed can be predicted, so that when it faces the risk of causing failure, such as breakage, breakage, and construction damage, that is, before the failure occurs, this risk can be discovered as much as possible, and the PON protection operation can be directly executed after the discovery, effectively reducing the business interruption and loss caused by the target line after the failure occurs. BRIEF DESCRIPTION OF THE DRAWINGS
[0047] Figure 1 This is a flow chart of the first embodiment of the PON protection method of the present application;
[0048] Figure 2 This is a detailed flow chart of S200 in the first embodiment of the PON protection method of the present application;
[0049] Figure 3 This is a detailed flow chart of S200 in the second embodiment of the PON protection method of the present application;
[0050] Figure 4 This is a detailed flow chart of S200 in the third embodiment of the PON protection method of the present application;
[0051] Figure 5 This is a functional module diagram of an embodiment of a PON protection device of the present application;
[0052] Figure 6 This is a schematic diagram of the hardware structure of the PON protection device involved in the embodiment of the present application. DETAILED DESCRIPTION
[0053] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0054] First, some technical terms in the present application are explained to facilitate those skilled in the art to understand the present application.
[0055] PON protection is a technology used in PON (passive optical network) systems to provide fast protection switching to ensure that services can be quickly restored when a trunk optical fiber or other key components fail, thereby ensuring user experience and network stability. PON protection technology uses different protection mechanisms and strategies to achieve redundant protection of key components such as trunk optical fibers, optical distribution networks, and optical network units to cope with various possible failure situations.
[0056] However, all current PON protection systems and solutions follow the "fault monitoring > fault occurrence > protective line switching" model, that is, continuous monitoring of PON network-related signals, and when changes are detected in PON-related signals, it is determined that a fiber break, optical module damage, or other faults have occurred, and then PON protection switching is initiated. The basic idea of this model is to perform line switching after a fault occurs. During line faults and line switching, services will be greatly affected by line interruptions.
[0057] Based on the above problems, the present application provides a PON protection method and device. The key point of the invention is that by continuously monitoring the operating parameters and / or physical state parameters of the system, the fault risk of the target line that has not yet failed is predicted, so that when it faces the risk of causing failure, such as breakage, breakage, and construction damage, that is, before the failure occurs, this risk can be discovered as much as possible, and the PON protection operation is directly executed after the discovery, effectively reducing the business interruption involving the target line after the failure occurs, causing losses.
[0058] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.
[0059] In a first aspect, an embodiment of the present application provides a PON protection method.
[0060] In one embodiment, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the PON protection method of the present application. Figure 1 As shown, the PON protection method includes:
[0061] S100, obtaining operating parameters of a target line during signal transmission and / or physical state parameters of the target line;
[0062] S200, judging whether a target line has a fault risk according to the operating parameters and / or physical state parameters;
[0063] S300: If yes, perform protection and switching operations of the PON.
[0064] Among them, before problems occur in the optical fiber line, such as optical fiber breakage, damage, construction damage, etc., the relevant indicators of the optical fiber are likely to change in a precursory manner, such as the bit error rate, optical power and LOS signal during the operation of the optical fiber, and the vibration signal reflected by the current physical state of the optical fiber. Therefore, in some embodiments, the operating parameters include at least one of the bit error signal, optical power and LOS signal; the physical state parameters include at least the vibration signal of the target line. Different embodiments may use different operating parameters or physical state parameters or a combination of them, and this application is not limited here.
[0065] Specifically, in this embodiment, step S200 includes the following steps:
[0066] S2100, judging whether the target line meets a preset primary risk index according to the error signal within the most recently set first time period or the error signal within the set first period; wherein the primary risk index is related to the error signal transmitted by the target line and is lower than the same type index corresponding to the target line in a fault state;
[0067] S2400: When at least the first-level risk indicator is met, determine that the target line has a fault risk.
[0068] S2100 includes the following steps:
[0069] S2110, calculating the bit error rate of the signal transmitted by the target line within the most recent set first time length or the most recent set first period according to the bit error signal within the most recent set first time length or the most recent set first period;
[0070] S2120, judging whether the preset first-level risk index is met according to whether the bit error rate is greater than a preset bit error rate risk threshold; wherein the bit error rate risk threshold is less than the bit error rate corresponding to the target line fault state;
[0071] S2130: If it is greater than, it is determined to meet the first-level risk indicators.
[0072] In this embodiment, the bit error situation of the system is continuously monitored by acquiring the bit error rate monitoring channel between the OLT system of the target line and the switching module, such as the bit error information of the OLT system, such as CRC Error and Bip Error, and setting a timer according to the sampling clock output by the clock frequency division module, counting the monitored bit error information within the time set by the timer, and starting to calculate the bit error rate according to the count value after the timer setting time is reached; the calculated bit error rate is compared with the bit error rate risk threshold (the risk judgment value indicates that the bit error rate has reached a certain value, and the risk of line failure is high, but lower than the bit error rate corresponding to the line failure). If the bit error rate is greater than the bit error rate risk threshold (this indicates that the optical line has a bad condition, the risk of failure is high, and service interruption may occur immediately; it is necessary to issue an early warning signal, and perform service backup and service processing in time before switching, and then issue a switching signal for PON switching comprehensive processing and execution module processing.
[0073] Reference Figure 2 Furthermore, in order to further improve the accuracy of risk judgment and reduce the triggering of the PON protection ring in some scenarios where the bit error rate is high but no failure actually occurs, in some embodiments, after step S2100 and before step S2400, the following steps are included:
[0074] S2200, judging whether the target line state meets a preset secondary risk indicator according to a plurality of optical power signals continuously collected within a recently set second time period or a plurality of optical power signals continuously collected within a set second period; wherein the secondary risk indicator is related to the optical power signal of the target line and is lower than the same type indicator corresponding to the target line in a fault state;
[0075] Step S2400 is further optimized to determine whether the target line has a fault risk at least when the first-level risk indicator and the second-level risk indicator are met.
[0076] In this embodiment, by combining the first-level risk indicator with the second-level risk indicator related to the optical power phase signal, it is effectively utilized that when problems occur in the optical fiber line, such as optical fiber breakage, breakage, construction damage, etc., the relevant indicators of the optical fiber are likely to show precursory changes. The received optical power is one of the important indicators. By monitoring the changes in the received optical power, some risks can be discovered in advance. This principle improves the accuracy of predicting risks in this case.
[0077] Further, step S2200 includes the following steps:
[0078] S2210, determining an optical power average value of a plurality of optical power signals continuously collected within a recently set second time period or a plurality of optical power signals continuously collected within a set second period;
[0079] S2220. If the optical power average value is less than a preset optical power risk judgment value, determine that the secondary risk indicator is met; wherein the optical power risk judgment value is less than the corresponding optical power average value under the target line fault state.
[0080] Specifically, the OLT system continuously monitors the optical power signals of the main optical module and the branch optical module of the OLT system through the I2C interface, sets a timer according to the sampling clock output by the clock division module, and continuously collects the optical power values of the optical modules L times within the time set by the timer; and analyzes the L optical power values, calculates their average value, and compares the average value with the optical power risk judgment value (the risk judgment value indicates that the optical power is very low, and the risk of damage to the optical fiber or optical module is high, but it is lower than the corresponding optical power when a line failure occurs). If the average value is less than the risk judgment value, it indicates that the optical power is very low, the optical fiber or optical module is close to being damaged, and there is a risk of complete interruption of the service. It is necessary to issue an early warning signal, and perform service backup and service processing in time before switching, and then issue a switching signal for PON switching comprehensive processing and execution module processing.
[0081] Reference Figure 3 Further, in one embodiment, after step S2200 and before step S2400, the following steps are included:
[0082] S2300, judging whether the target line state meets a preset third-level risk index according to a plurality of vibration signals and / or LOS signals collected within a recently set third time period or within a set third period; wherein the third-level risk index is related to the vibration signal and / or LOS signal of the target line;
[0083] And the step S2400 is adjusted to determine that the target line has a fault risk when at least the first-level risk indicator, the second-level risk indicator and the third-level risk indicator are met.
[0084] Among them, after determining that the current target line meets the first-level risk index and the second-level risk index, the vibration signal and / or LOS signal of the target line will be further detected and judged to determine whether the current state of the target line meets the third-level risk index, thereby further improving the accuracy of the target line fault prediction. In different embodiments, the judgment of the third-level risk index may be related to only one of the vibration signal and the LOS signal of the target line, or may be related to both at the same time, and the present application does not limit this.
[0085] Specifically, in this embodiment, step S2300 includes the following steps:
[0086] S2310, determining the number of transitions of the LOS signal collected within the most recently set third time period or within the set third period;
[0087] S2320, determining a vibration average value of a plurality of vibration signals collected within a recently set third time period or within a set third period;
[0088] S2330: If the number of jumps is greater than the set number and the average vibration value is greater than the preset vibration risk judgment value, determine that it meets the preset third-level risk index.
[0089] Specifically, in this embodiment, the optical fiber vibration sensor is laid above the optical fiber line, and the output signal of the optical fiber sensor is connected to the OLT system. The OLT system continuously monitors the vibration signal output by the optical fiber vibration sensor; and a timer is set. Within the time set by the timer, the vibration signal output by the optical fiber vibration sensor is continuously collected M times, and the M times collected signals are stored one by one in the OLT system, and the average value of the M times collected data is calculated; the calculated average value is compared with the set risk judgment value (the risk judgment value indicates that the vibration is large and the risk of optical fiber damage is very high). If it is greater than or equal to the risk judgment value, it is considered that the vibration near the optical fiber is large, and there may be a destructive event that threatens the safety of the optical fiber, such as mechanical construction, rolling, excavation, drilling, etc., and the risk of optical fiber breakage and damage is very high, and the service is about to be completely interrupted;
[0090] At the same time, the LOS signals of the two optical modules of the OLT system are continuously monitored. According to the clock signal output by the clock divider module, the LOS signals are collected into the N-bit shift register of the programmable logic device; XOR calculation is performed on every 2 bits in the N-bit shift register, and the calculated XOR value is analyzed and evaluated. If 2 or more XOR values are 1, it means that the LOS signal of the optical module has jumped 2 or more times, indicating that the optical fiber system may oscillate due to external reasons, the optical fiber system is in an unstable state, and the system is at risk of service interruption, and service switching needs to be performed in advance;
[0091] This embodiment analyzes and judges the above two additional situations for the target line conditions that meet the primary risk index and the secondary risk index, and when any one of the situations is met, it can be determined that the current target line has a greater risk of fault interruption and needs to perform PON protection operations in advance.
[0092] Ultimately, it is possible to determine the current status of the target line from multiple aspects, improve the accuracy of fault risk prediction, and take the lead in performing PON protection operations when it is determined that there is a risk of fault interruption.
[0093] In addition, for the above-mentioned embodiments, when the data collected during the most recent set time or the last set period are used to judge the relevant risk indicators, for example, the error signal collected during the most recent first set time or the last set first period is used to judge whether it meets the first-level risk indicator. When the most recent first set time is selected, the data analyzed each time is the data within the most recent first set time at the current time point, which means that the data used in the two previous and subsequent analysis calculations are allowed to overlap partially. For the analysis process that uses the error signal collected during the last set first period to judge, the data used in each analysis and calculation process completely belongs to two different set first periods, and the time points corresponding to the data used are completely different. For these two schemes, choosing to use the data within the most recent first set time for analysis can ensure that this scheme can always use the data within the most recent period for fault judgment, and then analyze and obtain the fault risk in the first time when there is a fault risk, without waiting for the collection period to pass completely before analyzing, but the computing power required for calculation at the same time is greater. The calculation process of the scheme that uses the data within the first set period for analysis is relatively easier to implement, and the required computing power is relatively lower, which is suitable for implementation in more common scenarios.
[0094] In a second aspect, an embodiment of the present application further provides a PON protection device.
[0095] In one embodiment, referring to Figure 5 , Figure 5 This is a functional module diagram of an embodiment of a PON protection device of the present application. Figure 5 As shown, the PON protection device includes:
[0096] An acquisition module, configured to acquire operating parameters of a target line during signal transmission and / or physical state parameters of the target line;
[0097] A risk prediction module, for determining whether a target line has a fault risk based on the operating parameters and / or physical state parameters;
[0098] The protection module is configured to perform protection and switching operations of the PON if there is a risk of failure.
[0099] Among them, the functional implementation of each module in the above-mentioned PON protection device corresponds to each step in the above-mentioned PON protection method embodiment, and its functions and implementation processes are no longer repeated here.
[0100] In a third aspect, an embodiment of the present application provides a PON protection device, which may be a device with data processing function, such as a personal computer (PC), a laptop computer, or a server.
[0101] Reference Figure 6 , Figure 6 The hardware structure diagram of the PON protection device involved in the embodiment of the present application is shown in FIG. In the embodiment of the present application, the PON protection device may include a processor, a memory, a communication interface, and a communication bus.
[0102] The communication bus may be of any type and is used to interconnect the processor, the memory, and the communication interface.
[0103] The communication interface includes input / output (I / O) interface, physical interface and logical interface, etc., which are used to realize the interconnection of devices inside the PON protection device, and the interface used to realize the interconnection between the PON protection device and other devices (such as other computing devices or user devices). The physical interface can be an Ethernet interface, a fiber optic interface, an ATM interface, etc.; the user device can be a display, a keyboard, etc.
[0104] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.
[0105] The processor may be a general-purpose processor, and the general-purpose processor may call the PON protection program stored in the memory and execute the PON protection method provided in the embodiment of the present application. For example, the general-purpose processor may be a central processing unit (CPU). The method executed when the PON protection program is called may refer to the various embodiments of the PON protection method of the present application, and will not be repeated here.
[0106] Those skilled in the art will understand that Figure 6 The hardware structure shown in the figure does not constitute a limitation on the present application, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.
[0107] In a fourth aspect, an embodiment of the present application also provides a computer-readable storage medium.
[0108] The computer-readable storage medium of the present application stores a PON protection program, wherein when the PON protection program is executed by a processor, the steps of the PON protection method described above are implemented.
[0109] Among them, the method implemented when the PON protection program is executed can refer to the various embodiments of the PON protection method of the present application, and will not be repeated here.
[0110] It should be noted that the serial numbers of the above-mentioned embodiments of the present application are only for description and do not represent the advantages or disadvantages of the embodiments.
[0111] The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit "first", "second" and "third" to different types.
[0112] In the description of the embodiments of the present application, "exemplary", "for example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary", "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary", "for example" or "for example" is intended to present related concepts in a specific way.
[0113] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or. For example, A / B can mean A or B. The “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, “multiple” refers to two or more than two.
[0114] In some processes described in the embodiments of the present application, multiple operations or steps that appear in a specific order are included, but it should be understood that these operations or steps may not be executed in the order in which they appear in the embodiments of the present application or in parallel, and the sequence number of the operation is only used to distinguish the different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed in sequence or in parallel, and these operations or steps may be combined.
[0115] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, disk, CD) as described above, and includes a number of instructions for a terminal device to execute the methods described in each embodiment of the present application.
[0116] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.
Claims
1. A PON protection method, characterized in that: The method comprises: Obtaining operating parameters of a target line during signal transmission and / or physical state parameters of the target line; Determining whether a target line has a fault risk according to the operating parameters and / or physical state parameters; If it exists, perform PON protection and switching operations.
2. The PON protection method according to claim 1, characterized in that: The operation parameter includes at least one of a bit error signal, optical power and a LOS signal; and the physical state parameter includes at least a vibration signal of the target line.
3. The PON protection method according to claim 1, characterized in that: The step of judging whether the target line has a fault risk according to the operating parameters and / or physical state parameters comprises the following steps: Determine whether the target line meets a preset primary risk index according to the error signal within the most recently set first time period or the error signal within the set first period; wherein the primary risk index is related to the error signal transmitted by the target line and is lower than the same type of index corresponding to the target line in a fault state; At least when the first-level risk indicator is met, it is determined that the target line has a failure risk.
4. The PON protection method according to claim 3, characterized in that: The step of judging whether the target line meets a preset first-level risk index according to the error signal within the most recently set first time period or the error signal within the set first cycle includes the following steps: Calculate the bit error rate of the signal transmitted by the target line within the most recent set first time length or the most recent set first period according to the bit error signal within the most recent set first time length or the most recent set first period; According to whether the bit error rate is greater than a preset bit error rate risk threshold, judging whether it meets the preset first-level risk index; wherein the bit error rate risk threshold is less than the bit error rate corresponding to the target line fault state; If it is greater, it is determined to meet the first-level risk indicators.
5. The PON protection method according to claim 3, characterized in that: After judging whether the target line state meets the preset primary risk index according to the error signal within the most recently set first time period or the error signal within the set first period, and before judging whether the target line has a fault risk when at least the primary risk index is met, the following steps are included: Determine whether the target line state meets a preset secondary risk indicator according to a plurality of optical power signals continuously collected within a recently set second time period or a plurality of optical power signals continuously collected within a set second period; wherein the secondary risk indicator is related to the optical power signal of the target line and is lower than the same type of indicator corresponding to the target line in a fault state; In the step of determining that the target line has a fault risk when at least the first-level risk indicator is met, When at least the first-level risk indicator and the second-level risk indicator are met, it is determined that the target line has a failure risk.
6. The PON protection method according to claim 5, characterized in that: The step of judging whether the target line state meets the preset secondary risk indicator according to the multiple optical power signals continuously collected within the most recently set second time period or the multiple optical power signals continuously collected within the set second period includes the following steps: Determine an average optical power value of a plurality of optical power signals continuously collected within a recently set second time period or a plurality of optical power signals continuously collected within a set second period; If the optical power average value is less than a preset optical power risk judgment value, it is determined that the secondary risk indicator is met; wherein, the optical power risk judgment value is less than the corresponding optical power average value under the target line fault state.
7. The PON protection method according to claim 5, characterized in that: After judging whether the target line state meets the preset secondary risk index according to the multiple optical power signals continuously collected within the most recently set second time period or the multiple optical power signals continuously collected within the set second period, and before judging whether the target line has a fault risk when at least the primary risk index is met, the following steps are included: According to a plurality of vibration signals and / or LOS signals collected within a recently set third time period or within a set third period, judging whether the state of the target line meets a preset third-level risk index; wherein the third-level risk index is related to the vibration signal and / or LOS signal of the target line; In the step of determining that the target line has a fault risk when at least the first-level risk indicator is met, When at least the first-level risk indicator, the second-level risk indicator and the third-level risk indicator are met, it is determined that the target line has a fault risk.
8. The PON protection method according to claim 7, characterized in that: The step of judging whether the target line state meets the preset third-level risk index according to the multiple vibration signals and / or LOS signals collected within the most recently set third time period or within the set third period includes the following steps: Determine a vibration average value of a plurality of vibration signals collected within a recently set third time period or within a set third cycle; If the vibration average value is greater than the preset vibration risk judgment value, it is determined to meet the preset third-level risk index.
9. The PON protection method according to claim 7, characterized in that: The step of judging whether the target line state meets the preset third-level risk index according to the multiple vibration signals and / or LOS signals collected within the most recently set third time period or within the set third period includes the following steps: Determine the number of transitions of the LOS signal collected within the most recently set third time period or within the set third period; If the number of jumps is greater than the set number, it is determined that the preset third-level risk indicator is met.
10. A PON protection device, characterized in that: The device comprises: An acquisition module, configured to acquire operating parameters of a target line during signal transmission and / or physical state parameters of the target line; A risk prediction module, for determining whether a target line has a fault risk based on the operating parameters and / or physical state parameters; The protection module is configured to perform protection and switching operations of the PON if there is a risk of failure.