WO2020083319A1 - 一种突发式长发光干扰onu定位的方法及装置 - Google Patents

一种突发式长发光干扰onu定位的方法及装置 Download PDF

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Publication number
WO2020083319A1
WO2020083319A1 PCT/CN2019/112825 CN2019112825W WO2020083319A1 WO 2020083319 A1 WO2020083319 A1 WO 2020083319A1 CN 2019112825 W CN2019112825 W CN 2019112825W WO 2020083319 A1 WO2020083319 A1 WO 2020083319A1
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Prior art keywords
onu
interference
onus
suspicious
burst
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PCT/CN2019/112825
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English (en)
French (fr)
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余辰东
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中兴通讯股份有限公司
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Priority to JP2021522422A priority Critical patent/JP7176111B2/ja
Priority to EP19875773.4A priority patent/EP3873103B1/en
Priority to RU2021114378A priority patent/RU2764293C1/ru
Publication of WO2020083319A1 publication Critical patent/WO2020083319A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H04B10/0791—Fault location on the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0064—Arbitration, scheduling or medium access control aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0079—Operation or maintenance aspects
    • H04Q2011/0083—Testing; Monitoring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1301—Optical transmission, optical switches

Definitions

  • the present invention requires the priority of the Chinese patent application filed on October 25, 2018 in the Chinese Patent Office with the application number 201811248676.7 and the invention titled "A method and device for burst-type long-light interference ONU positioning" The entire content of is incorporated into the present invention by reference.
  • the invention relates to the technical field of passive optical networks, and in particular to a method and device for burst-type long-light emission interference ONU (Optical Networks Unit) positioning.
  • ONU Optical Networks Unit
  • a passive optical network xPON Passive Optical Network, passive optical network
  • the system consists of EMS (Element Management System, network management server) 100, OLT (Optical Line Terminal, optical line terminal) 200, ODN (Optical Distribution Network, optical distribution network) 300, and several ONUs 400.
  • EMS100 is used for the configuration, management and maintenance of OLT200 and xPON networks; EMS network management maintains and manages the historical information of OLT200 and ONU400 and related alarms and notification messages, and can complete the specific abnormal ONU according to the related alarms and notification messages Judgment and search for its specific physical location.
  • OLT200 is used to start the discovery process of ONU, allocate link identifier for ONU400 to complete ONU400 registration and authentication on OLT200, and allocate corresponding upstream time slot for ONU400.
  • ONU400 uploads data in the time slots allocated by OLT200 for its configuration. Normally, each time slot in the upstream direction is exclusively occupied by the ONU.
  • the OLT200 maintains the ONU online history information table based on the PON port, activates long light detection through RTT (Round-Trip Time, round trip time) drift or ONU upstream error code alarm, and locates the long light ONU through relevant strategies.
  • ODN300 is used to connect different numbers of ONU400 under OLT200.
  • OLT200 As a direct physical connection channel between OLT200 and ONU400, it may be composed of multiple physical devices.
  • ONU400 is used to assume the role of terminal equipment for home users. It accepts the management of OLT200, accepts the link identifier assigned by OLT200 during the registration process, and uploads data in the time slot window assigned by OLT200 to complete the service.
  • OLT connects and aggregates multiple ONU equipment through the ODN network.
  • the xPON network is a "point-to-multipoint" topology: the OLT allocates upstream transmission time slots from the ONU through TDMA (Time Division Multiple Access), and the ONU must allocate the upstream Bwmap (Bandwidth Map, which is allocated by the OLT). In the bandwidth slot), turn on the laser and send data.
  • TDMA Time Division Multiple Access
  • Bwmap Bandwidth Map
  • Figure 1 describes the xPON registration flow chart, taking EPON (Ethernet Passive Optical Network, Ethernet passive optical network equipment) as an example, other systems are similar.
  • EPON Ethernet Passive Optical Network, Ethernet passive optical network equipment
  • the ONU can only turn on the laser and send data in different upstream time slots (that is, authorized time slots and independent of each time slot) allocated by the OLT (based on the ONU logo); the ONU is in The laser must be turned off during unauthorized time slots (keep silent) to avoid the impact of the laser light emission on other upstream time slots.
  • the OLT uses the PON port as the unit to assign a unique identifier to each ONU as the link identifier of the ONU (such as LIID (Logical Link Identifier) in the EPON system) as the unique identifier of the ONU, such as the ONUID in the GPON system (ONU Identifier) as the ONU's unique identifier).
  • the OLT allocates authorized time slots for the ONU according to the ONU link identifier.
  • long luminous interference is generated, which causes the upstream transmission of other ONUs that work in the normal allocated time slot on the PON port. interference.
  • the related ONU will be offline.
  • Long light interference can be divided into two types according to the interference time: continuous long light interference and burst long light interference.
  • Long-lasting luminous interference The long-lasting luminous interference lasts longer than the detection accuracy of the hardware and can be directly detected by the hardware signal (Principle: The optical signal in the upstream direction of the PON is sudden and not continuous; if continuous light is detected Signal, that is, there is upstream interference); and interfere with the upstream time slot of all ONUs, the failure phenomenon is obvious, and it is easy to be detected. And because of the long duration of interference, the time available for fault source location is also longer.
  • Burst-type long-light interference When long-light interference is sudden and has a short duration, which is less than the hardware detection accuracy, it cannot be effectively detected; and the short duration of the fault only affects some ONUs under the corresponding PON port.
  • the positioning method often requires a long positioning time, so it is difficult to locate.
  • the technical problem solved by the solution provided by the embodiment of the present invention is that some ONUs in the existing network xPON equipment are caused to emit light outside the OLT authorized time slot due to software and hardware abnormalities, and affect the ONU data transmission of adjacent time slots.
  • the problem of ONU disconnection, and the short duration of the sudden interference and the uncertainty of the ONU range / degree of interference are caused by the difficulty of detection and low positioning efficiency.
  • a method for positioning an ONU with bursty long light interference includes: xPON OLT central office equipment monitors the change of the ONU authorized time slot or the number of ONU online and offline times under each PON port in real time to obtain Multiple suspicious ONUs that generate burst-type long luminous interference under the PON port; the xPON OLT central office performs troubleshooting processing on the multiple suspicious ONUs to obtain burst-type long luminous interference that occurs under the PON port Interfere with ONU.
  • a device for intermittent ONU positioning with bursty long light emission includes: a monitoring module for real-time monitoring of ONU authorized time slot changes under each PON port or ONU online and offline times respectively to obtain A plurality of suspicious ONUs that generate burst-type long luminous interference under the PON port; a positioning module is used to troubleshoot the plurality of suspicious ONUs to obtain the burst-type long luminous interference that occurs under the PON port Interference with ONU.
  • a device for intermittent ONU positioning with bursty long light emission includes: a processor, and a memory coupled to the processor; the memory stores a A program for burst-type long light emission interfering with ONU positioning running on the device, when the program for burst-type long light emission interfering with ONU positioning is executed by the processor to implement the burst-type long light emission according to an embodiment of the present invention Steps of the method that interfere with ONU positioning.
  • the computer storage medium stores a program of burst-type long-lighting interference ONU positioning, and the program of burst-type long-lighting interference ONU positioning is implemented when executed by a processor.
  • the steps of the method for bursting long luminescence interference ONU positioning provided by an embodiment of the present invention.
  • the computer program product includes a computer program stored on a non-transitory computer-readable storage medium.
  • the computer program includes program instructions. When the program instructions are executed by a computer , The computer is caused to execute the method in any of the above method embodiments.
  • FIG. 1 is a schematic diagram of xPON link uplink time division multiple access provided by the prior art
  • Figure 2 is an xPON network topology diagram provided by the prior art
  • FIG. 3 is a flow chart of a method for burst-type long-emitting interference ONU positioning according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a device for intermittent ONU positioning by burst-type long light emission provided by an embodiment of the present invention
  • FIG. 5 is a flowchart of an ONU processing method for detecting and locating burst interference provided by an xPON device according to an embodiment of the present invention
  • FIG. 6 is a flowchart of recording the correspondence between ONU online and offline information and time slots provided by an embodiment of the present invention
  • FIG. 7 is an example diagram of a correspondence relationship between backward interference (in the middle of an interference source queue) multiple DBA cycle time slots provided by an embodiment of the present invention
  • FIG. 8 is an exemplary diagram of a correspondence relationship between multiple DBA cycle time slots of backward interference (the tail of an interference source queue) provided by an embodiment of the present invention
  • FIG. 9 is an example diagram of a correspondence relationship between forward interference (in the middle of an interference source queue) multiple DBA period slots provided by an embodiment of the present invention.
  • FIG. 10 is an example diagram of a correspondence relationship between forward interference (interference source queue head) multiple DBA cycle time slots provided by an embodiment of the present invention.
  • FIG. 11 is a flowchart of determining a suspicious ONU provided by an embodiment of the present invention.
  • FIG. 13 is a flowchart of determining an abnormal ONU provided by an embodiment of the present invention.
  • the ONU burst long luminous interference essentially affects that the faulty ONU authorized time slot interferes with one or more authorized time slots adjacent to its authorized time slot in the time domain, and causes the ONU of these authorized time slots to become abnormal .
  • Burst-type long luminous interference is a major hidden danger of the PON of the TDMA mechanism, and also exists in other PON mechanisms that use the TDMA method to perform ONU upstream authorization slot management.
  • the present invention directly detects the corresponding relationship between the upstream time slot allocated by the PON and the ONU identifier, finds the suspected interfering ONU adjacent to the interfered time slot, and continuously improves the positioning efficiency through weight configuration, thereby realizing the burst
  • the long light emission interferes with the effective detection and efficient positioning of the ONU, and overcomes the problems of traditional methods of detection accuracy limitations and positioning difficulties.
  • the invention adopts the corresponding relationship of ONU authorized time slot allocation in the PON system as the detection condition, and finds the ONU adjacent to the interfered time slot as a suspected ONU, which does not depend on the long light emission type and hardware capabilities; at the same time, the long light interference is essentially interference
  • the dynamic authorization time slot therefore, the detection accuracy of the suspected ONU has been greatly improved through the detection of the authorization time slot change.
  • Second determine a smaller range of suspected ONUs and set the weight of suspected ONUs. Regarding a few ONUs and perform related processing according to the interference weight. And through the processing result feedback to optimize the weight setting, the efficiency is greatly improved compared with the traditional method and the efficiency is continuously improved in multiple rounds of processing.
  • FIG. 3 is a flowchart of a method for bursting long-emitting interference ONU positioning provided by an embodiment of the present invention.
  • the method includes: Step 1: When xPON OLT central office equipment authorizes the ONU under each PON port Gap changes or ONU online and offline times are monitored in real time, respectively, to obtain multiple suspicious ONUs with bursty long luminous interference under the PON port; Step 2: The xPON OLT central office equipment carries out multiple suspicious ONU Troubleshoot the process to obtain the interference ONU where bursty long luminous interference occurs under the PON port.
  • the xPON OLT central office equipment monitors the real-time monitoring of the ONU authorized time slot changes and ONU online and offline times under each PON port respectively, and obtaining multiple suspicious ONUs that have burst-type long luminous interference under the PON port includes: : The xPON OLT central office equipment checks the slot configuration mechanism of the upstream bandwidth of the PON port to determine whether the slot configuration mechanism of the upstream bandwidth of the PON port is a dynamic slot configuration mechanism or a static slot configuration mechanism; The time slot configuration mechanism for determining the upstream bandwidth of the PON port is a dynamic time slot configuration mechanism, then the xPON OLT central office equipment monitors the ONU authorized time slot changes in real time, and determines that a burst-type long light emission interference occurs under the PON port Multiple suspicious ONUs; if it is determined that the time slot configuration mechanism of the upstream bandwidth of the PON port is a static time slot configuration mechanism, the xPON OLT central office equipment monitors the ONU online and offline times in
  • the xPON OLT central office equipment performs troubleshooting processing on the plurality of suspicious ONUs to obtain interference ONUs that generate bursty long light emission interference under the PON port.
  • the xPON OLT central office equipment includes: In the detection period, the interference weight value of each suspicious ONU is obtained by separately setting interference weights to the multiple suspicious ONUs; the xPON OLT central office equipment sequentially orders the multiple suspicious ONUs according to the order of the interference weight values Perform troubleshooting processing to obtain an interference ONU that generates bursty long light emission interference under the PON port.
  • the xPON OLT central office equipment monitors the ONU authorized time slot changes in real time, and determines that a plurality of suspicious ONUs with burst-type long luminous interference under the PON port include: the xPON OLT central office equipment according to the PON
  • the corresponding relationship between the ONU registered authentication mark and the authorized time slot changes continuously in multiple dynamic DBA cycles of the port, and the multiple time slots adjacent to the time range of multiple ONU time slot changes and the corresponding time slots are found.
  • the ONU uses the multiple time slots as multiple suspicious time slots, and the ONUs corresponding to the multiple suspicious time slots as multiple suspicious ONUs with burst-like long light emission interference.
  • the burst long luminous interference includes forward burst long luminous interference and backward burst long luminous interference;
  • the xPON OLT central office equipment sets the interference weights for the multiple suspicious ONUs in each detection period to obtain the interference weight value for each suspicious ONU includes: when the burst-type long light-emitting interference is a forward burst When transmitting long-emitting interference, the xPON OLT central office equipment sets the interference weight of the ONU corresponding to the foremost time slot of the multiple suspicious ONUs to the highest in each detection period, and other suspicious ONUs are backward according to the time slot.
  • the order and the interference weight decrease in turn; when the burst-type long light-emitting interference is backward burst-type long light-emitting interference, then the xPON OLT central office equipment will select the last of the multiple suspicious ONUs in each detection cycle
  • the interference weight of the ONU corresponding to the time slot is set to the highest, and the other suspicious ONUs decrease the interference weight sequentially according to the forward order of the time slot.
  • the xPON OLT central office equipment monitors the number of ONUs going online and offline in real time, and determines that a number of suspicious ONUs that generate bursty long light emission interference under the PON port include: The xPON OLT central office equipment sets the PON port Count the number of ONU online and offline times within a certain period, find multiple abnormal ONUs whose online and offline times are not within the preset online and offline frequency range, and use the multiple abnormal ONUs as multiple suspicious ONUs with burst-like long light emission interference.
  • the xPON OLT central office equipment counts the number of ONUs going online and offline during the period set by the PON port to find out multiple abnormal ONUs whose online and offline times are not within the range of preset online and offline times, including: the xPON OLT central office Based on the absolute time, the device counts and records the set of times that the PON port goes online and offline for the first ONU in a set period, or based on the relative time, counts and records the PON port up and down for the second ONU in the set period based on the current time Line times set; the xPON OLT central office equipment compares the number of times each ONU goes online and offline in the first ONU online and offline times set or the second ONU online and offline times set with a preset range of online and offline times, respectively; Obtain multiple abnormal ONUs; wherein the preset range of online and offline times includes the range of ONU offline times under the PON port, the discrete range of statistical distribution of the ONU offline times under the PON port, and the specific
  • the xPON OLT central office equipment sequentially performs troubleshooting processing on the multiple suspicious ONUs according to the order of the interference weight values, and obtains the interfering ONUs that generate bursty long-emitting interference under the PON port including: According to the order of the interference weight value, the xPON OLT central office equipment shuts down the multiple suspicious ONUs one by one in turn, and determines the suspicious ONUs whose faults disappear within the observation period as a burst Interfering ONUs with long-term interference; or the xPON OLT central office equipment uses a two-division method to shut down the multiple suspicious ONUs in batches according to the order of the interference weights, and the fault will disappear within the observation period The suspicious ONU is determined to be an interfering ONU with bursty long-term interference.
  • FIG. 4 is a schematic diagram of an apparatus for burst-type long-emitting interference ONU positioning provided by an embodiment of the present invention. As shown in FIG. 4, it includes: a monitoring module, which is used to authorize time slot changes or ONUs for ONUs under each PON port. Real-time monitoring of the number of online and offline times to obtain multiple suspicious ONUs with sudden long luminous interference under the PON port; a positioning module is used to troubleshoot the multiple suspicious ONUs to obtain the PON port Interfering ONU with bursty long luminous interference occurs
  • a device for positioning an ONU of a burst-type long luminescence interference optical network unit includes: a processor, and a memory coupled to the processor; A program of burst-type long light emission interfering with ONU positioning running on the processor, when the program of burst-type long light emission interfering with ONU positioning is executed by the processor to implement the burst provided by the embodiment of the present invention Steps of long-distance luminescence interfere with ONU positioning method.
  • the computer storage medium stores a program for ONU positioning of a burst-type long light-emitting interference optical network unit, and the program for burst-type long light-emitting interference ONU positioning is executed by a processor
  • the steps of the method for bursting long light emission interference ONU positioning according to an embodiment of the present invention are implemented.
  • the computer program product includes a computer program stored on a non-transitory computer-readable storage medium.
  • the computer program includes program instructions. When the program instructions are executed by a computer , The computer is caused to execute the method in any of the above method embodiments.
  • the detection and positioning methods of the embodiments of the present invention are consistent for LLID (EPON system), ONUID (GPON system), and other systems that use the TDMA working mechanism.
  • FIG. 5 is a flowchart of an ONU processing method for detecting and locating burst interference provided by an xPON device according to an embodiment of the present invention. As shown in FIG. 5, the method includes the following steps:
  • S101 xPON OLT central office equipment records and maintains ONU registration certification marks (including but not limited to LLID / ONU ID / ALLOC ID, etc. marks that are actually used to allocate upstream time slots for ONUs) in the unit of PON port in the unit of PON port Correspondence table with authorized time slots (hereinafter referred to as "authorized time slot information table", as shown in Table 1 for example); the content of the correspondence table includes but is not limited to: DBA cycle serial number, upstream authorized time slot number, ONU information (ONU information includes: ONU registration certification mark, ONU configuration index, ONU online and offline times); initialize recording of ONU authorized time slot information table according to certain conditions (including but not limited to setting a timer, or triggered by ONU online and offline events).
  • ONU registration certification marks including but not limited to LLID / ONU ID / ALLOC ID, etc. marks that are actually used to allocate upstream time slots for ONUs
  • Correspondence table with authorized time slots hereinafter referred to as
  • the xPON OLT central office equipment uses the PON port as the unit to record the online and offline statistics table of the ONU under the PON port in different time ranges (hereinafter referred to as "registration statistics table", as shown in Table 2 for example).
  • Configure according to a certain strategy including but not limited to: ONU configuration index, statistics on the number of online and offline times based on different time units (such as the number of online and offline times in the current 24 hours (absolute time), and the number of online and offline times in the last 24 hours (relative time); Current 12-hour (absolute time) online and offline times, the last 12 hours (relative time) the number of online and offline times; the current 4 hours (absolute time) the number of online and offline times, the last 4 hours (relative time) the number of online and offline times; the current 1 The number of online and offline times in hours (absolute time), the number of online and offline times in the last hour (relative time), etc.).
  • the xPON OLT central office equipment uses the PON port as a unit to record and maintain the suspicious ONU record table, as shown in Table 3 (contents include but are not limited to the ONU configuration index, ONU registration certification mark, ONU feature value, and weight).
  • xPON central office equipment records and maintains an abnormal interference ONU record table.
  • the contents shown in Table 4 include but are not limited to ONU logos (including but not limited to mac, sn), ONU characteristic values (including but not limited to model, type, version) .
  • the xPON OLT central office equipment starts detection based on the PON port and records the ONU authorized time slot change and ONU online and offline times; the default trigger conditions: including but not limited to a certain time (including But it is not limited to artificial designation, configuration according to a certain policy, etc.) Multiple ONUs under the PON port appear offline, or the number of ONU offlines under the PON port is higher than a certain threshold (the threshold can be set manually, or specified by default according to hardware characteristics) or more Combination of conditions. And the detection trigger condition can be configured manually;
  • S103 Continuously record ONU authorized time slot change information and ONU online and offline times according to a certain strategy, and update the "authorized time slot information table” and "registration statistics table” according to the DBA bandwidth allocation period;
  • the PON port continuously records multiple dynamic DBAs Correspondence table between ONU registered certification marks and authorized time slots in the period, when ONU offline or online causes the corresponding relationship between ONU registered certification marks and authorized time slots (hereinafter referred to as "ONU time slot relationship”), record The ONU time slot should be related, maintain and update the "authorized time slot information table”; when the ONU goes offline or goes online, record the number of ONU online and offline times in the ONU information, maintain and update the "registration statistics table”; record multiple events continuously DBA cycle, record times: can be set manually, or confirmed according to a certain method, including but not limited to: the number of ONUs configured under the PON port multiplied by the parameter n (including a default value of n, such as 3, and can be modified manually ); Or continuous recording
  • S104 The fourth step: determine the suspicious ONU in combination with the upstream slot allocation feature of the PON port; when the upstream bandwidth is dynamically allocated (that is, after the ONU is offline, a new upstream authorized time slot, that is, the ONU authorized time slot, will be allocated Correspondence changes): Combine the initial ONU authorized time slot information table with the ONU authorized time slot information per DBA cycle, read and detect whether the corresponding relationship between the ONU and time slot of each dynamic DBA cycle in the "authorized time slot information table" occurs Change, if the correspondence between ONU and time slot changes in multiple DBA cycles, find the time slot adjacent to the time range of multiple ONU time slot changes and the corresponding ONU, and determine the adjacent time slot as suspicious The corresponding ONU is determined to be a suspicious ONU; when the upstream bandwidth is statically allocated (that is, when the ONU goes offline, the original upstream authorized time slot will be allocated again, that is, the corresponding relationship of the ONU authorized time slot does not change). Difference analysis of ONU online and offline times within
  • S105 Record suspicious ONU information and update the suspicious ONU record table (contents include but are not limited to the ONU configuration index, ONU registration certification mark, ONU feature value, and weight). And set the suspicious weight of ONUs in the list of suspicious ONUs according to a certain strategy; strategies include, but are not limited to, according to the sequential relationship with the critical timing, the number of disconnections, etc .;
  • S106 According to the suspicious weight in the list of suspicious ONUs, from high to low, according to a certain method, remotely turn off the power of the corresponding ONU optical transmitter one by one, such as: first turn off the suspicious ONU with the highest weight, and observe for a period of time, if the fault still exists, then Turn off the suspicious ONU with the next highest weight, observe it for a period of time, and so on, and so on, until the fault disappears, then confirm that the current shutdown ONU is the fault interference ONU, record and update the abnormal interference ONU record table.
  • Methods include but are not limited to the shutdown method; the shutdown method can be used to eliminate interference by remotely shutting down the power of a specific ONU optical transmitter, and after shutting down a specific ONU, detect whether the fault exists (whether the trigger condition is met) within the observation period ), If the fault does not exist, the ONU is a fault interference ONU, otherwise, the next or next batch of ONUs are shut down according to the algorithm until all ONUs are traversed;
  • S107 Query the information such as the mac address / sn of the abnormal interference ONU that can uniquely identify the ONU, and report it to the network management or third-party operation and maintenance platform through an alarm or notification, and the operation and maintenance personnel will deal with the abnormal interference ONU.
  • the information such as the mac address / sn of the abnormal interference ONU that can uniquely identify the ONU, and report it to the network management or third-party operation and maintenance platform through an alarm or notification, and the operation and maintenance personnel will deal with the abnormal interference ONU.
  • the information such as the mac address / sn of the abnormal interference ONU that can uniquely identify the ONU
  • the network management or third-party operation and maintenance platform through an alarm or notification
  • the operation and maintenance personnel will deal with the abnormal interference ONU.
  • the NMS obtains the abnormal ONU information record table reported by the OLT, and maintains and updates the local abnormal ONU information record table.
  • S108 Record the characteristic value (model / version) of the abnormal interference ONU, and meet the trigger detection condition in the next round is the new suspicious ONU record table (contents include but not limited to ONU configuration index, ONU registration certification mark, ONU characteristic value, weight ) Update, update the weight of the relevant ONU in the suspicious ONU record table according to the matching situation of the ONU feature value, and go to the sixth step for positioning.
  • FIG. 6 is a flowchart of recording the correspondence relationship between ONU online and offline information and time slots provided by an embodiment of the present invention.
  • ONU authorized time slot change information and ONU online and offline times are continuously recorded, and allocated according to DBA bandwidth
  • the ONU goes offline or goes online, etc.
  • the number of records can be set manually, or confirmed according to a certain method, including but not limited to: The number of ONUs configured under the PON port is multiplied by the parameter n (including a default value of n, such as 3, and can be modified manually); or continuous recording, and after the trigger condition disappears Record m dynamic DBA cycles (including a default value of m, such as 10, and can be modified manually).
  • S301 When the ONU goes offline or goes online, maintain and update the "registration statistics table"; strategies include but are not limited to: based on absolute time, record the number of ONU offline or online times within a specified time unit; based on Relative time, record the number of times the ONU goes offline or goes online within the specified time unit based on the current time; S302: When the corresponding relationship between the ONU registration certification mark and the authorized time slot changes due to the ONU going offline or going online, maintain and maintain Update the "authorized time slot information table".
  • Strategies include, but are not limited to: record the correspondence between the ONU registration certification mark and the authorized time slot in each dynamic DBA cycle; when the ONU drops, record the ONU registration certification mark and the authorized time slot in each dynamic DBA cycle
  • Correspondence When the ONU goes online, record the correspondence between the ONU registration certification mark and the authorized time slot in each dynamic DBA period.
  • FIG. 11 is a flowchart of judging a suspicious ONU provided by an embodiment of the present invention.
  • Cycle 1 Correspondence of initial timing: 1/2/3/4/5/6/7/8/9/10/11/12/13/14, ONU 7/8 is disturbed, disconnected, and in the next Cycle online again;
  • Period 2 The timing correspondence changes from the previous period, and the 1/2/3/4/5/6/7/8/9/10/11/12/13/14 timing correspondence changes to 1/2/3 / 4/5/6/9/10/11/12/13/14/7/8; ONU9 / 10/11 is disturbed, disconnected, and re-launched in the next cycle;
  • Cycle 3 The timing correspondence changes from the previous cycle, and the 1/2/3/4/5/6/9/10/11/12/13/14/7/8 timing correspondence changes to 1/2/3 / 4/5/6/12/13/14/7/8/9/10/11; ONU12 was disturbed, dropped, and went online again in the next cycle;
  • Cycle 4 The timing correspondence changes from the previous cycle, 1/2/3/4/5/6/12/13/14/7/8/9/10/11; the timing correspondence changes to 1/2 / 3/4/5/6/13/14/7/8/9/10/11/12; ONU13 / 14/7 is disturbed, disconnected, and re-launched in the next cycle;
  • Cycle 5 The timing correspondence changes from the previous cycle, and the 1/2/3/4/5/6/13/14/7/8/9/10/11/12 timing correspondence changes to 1/2/3 / 4/5/6/8/9/10/11/12/13/14/7;
  • slot 6 Since the corresponding relationship between the ONU time slots after slot 6 has changed, slot 6 is a critical time slot, so it is judged to be backward interference (in the middle of the interference source queue), and the corresponding ONU 6 is a critical suspicious ONU.
  • the related ONU such as ONU4 / 5/6) that is adjacent to slot 6 forward is set as a suspicious ONU.
  • the weight of setting the critical and suspicious ONU is the largest (such as priority 3), and other suspicious ONUs set the weights (such as ONU5 weight 2 and ONU4 weight 1) according to certain policies (such as the weight is inversely proportional to the distance between the corresponding time slot and the critical time slot).
  • S412 It is detected that the time slots allocated by consecutive ONU registration certification marks are (over) shifted forward by one or more bits (that is, the ONU at the front of the entire queue appears to be dropped during the corresponding DBA allocation cycle), and forward
  • the first ONU of the offset ONU queue occupies the first time slot allocated in the DBA cycle; or the relationship between single or multiple ONU time slots after a specific time slot at the end of the authorized time slot sequence within multiple DBA allocation weeks (or The ONUs of multiple time slots at the end of the authorized time slot sequence within multiple DBA allocation weeks are disconnected); the last one or more ONUs in the ONU queue where the time slots assigned by the ONU registration certification marks all shift forward (Exclude the ONU located at the front of the queue in the initial ONU time slot relationship) Determined as a suspicious ONU; or multiple occurrences at the end of the authorized time slot sequence within the DBA allocation week.
  • An ONU has dropped a specific time slot before the corresponding time slot or related multiple A time slot is determined to be a suspicious time slot, and the ONU corresponding to the suspicious time slot (determined according to the ONU configuration index or ONU registration certification mark) is determined to be a suspicious ONU; (backward interference, and the interference source was once at the end of the queue, when the interference source The gap is relatively unfixed (forward movement occurs), and Gradually remained stable).
  • Cycle 1 Correspondence of initial timing: 1/2/3/4/5/6/7/8/9/10/11/12/13/14, ONU 1/2/3 is disturbed, disconnected, and Go online again in the next cycle;
  • Cycle 2 The timing correspondence changes from the previous cycle, all the time slot correspondences move forward, and the ONU1 / 2/3 that went offline in the previous cycle goes online at the tail of the team: such as 1/2/3/4/5/6 / 7/8/9/10/11/12/13/14's timing correspondence changes to 4/5/6/7/8/9/10/11/12/13/14/1/2/3; ONU1 / 2 was disturbed, dropped, and went online again in the next cycle;
  • Period 3 The timing correspondence changes from the previous period, and the timing correspondence of 4/5/6/7/8/9/10/11/12/13/14/1/2/3 changes to 4/5/6 / 7/8/9/10/11/12/13/14/3/1/2 (or the timing correspondence does not change, but the number of ONUs that went offline in the previous cycle increases); ONU3 / 1/2 / 4 Interrupted, disconnected, and re-launched in the next cycle;
  • Cycle 4 The timing correspondence changes from the previous cycle, and the timing correspondence between 4/5/6/7/8/9/10/11/12/13/14/3/1/2 changes to 5/6/7 / 8/9/10/11/12/13/14/3/1/2/4 (or the timing correspondence does not change, but the number of ONUs that went offline in the previous cycle increases); ONU3 / 1/2 / 4 Interrupted, disconnected, and re-launched in the next cycle;
  • Cycle 5 The timing correspondence changes from the previous cycle, and the timing correspondence between 5/6/7/8/9/10/11/12/13/14/3/1/2/4 changes to 5/6/7 / 8/9/10/11/12/13/14/3/2/1/4 (or the timing correspondence has not changed, but the number of ONUs that went offline in the previous cycle increased);
  • the ONU14 corresponds to the tail critical time slot of the timing forward range, and then the ONU timing relationship changes or appears to be dropped, thereby determining that it is backward interference (the interference source queue was once tail), and the corresponding ONU14 is a critical suspicious ONU.
  • set the relevant ONU such as ONU12 / 13/14) to be a suspicious ONU.
  • the weight of setting the critical ONU is the largest (such as priority 3), and other suspicious ONUs set the weights (such as ONU13 weight 2 and ONU12 weight 1) according to certain policies (such as the weight is inversely proportional to the distance between the corresponding time slot and the critical time slot).
  • Cycle 1 Correspondence of initial timing: 1/2/3/4/5/6/7/8/9/10/11/12/13/14, ONU 7/8 is disturbed, disconnected, and in the next Cycle online again;
  • Cycle 2 The timing correspondence changes from the previous cycle, and some of the time slot correspondences move forward, and the ONU7 / 8 was dropped in the last cycle and went online at the end of the team: such as 1/2/3/4/5/6/7
  • Cycle 3 The timing correspondence changes from the previous cycle, and some of the time slot correspondences are moved forward, and the ONU4 / 5/6 dropped in the last cycle and went online at the end of the team: 1/2/3/4/5/6 / 9/10/11/12/13/14/7/8's timing correspondence changes to 1/2/3/9/10/11/12/13/14/7/8/4/5/6; ONU / 1/2/3 is disturbed, disconnected, and re-launched in the next cycle;
  • the corresponding relationship of the timing sequence of cycle 4 has changed compared with the previous cycle, and the corresponding relationship of some time slots has been moved forward, and the sequence of the timing of the previous forward cycles of multiple cycles has moved to the head of the timing sequence, and the last cycle has been offline ONU1 / 2/3 goes online at the end of the team: the corresponding relationship between 1/2/3/9/10/11/12/13/14/7/8/4/5/6 changes to 9/10/11/12 / 13/14/7/8/4/5/6/1/2/3; ONU6 / 1/2/3 is disturbed, disconnected, and re-launched in the next cycle;
  • Cycle 5 The timing correspondence changes from the previous cycle, and the timing correspondence between 9/10/11/12/13/14/7/8/4/5/6/1/2/3 changes to 9/10/11 / 12/13/14/7/8/4/5/3/2/1/6 (or the timing correspondence has not changed, but the number of ONUs that went offline in the previous cycle increased);
  • the corresponding ONU9 is a critical and suspicious ONU.
  • set the relevant ONU such as ONU9 / 10/11
  • Set the weight of the critical ONU to be the largest (eg priority) 3, and other suspicious ONUs to set the weights (eg ONU10 weight 2, ONU11 weight 1) according to certain strategies (eg weight is inversely proportional to the distance between the corresponding time slot and the critical time slot).
  • S414 A single or multiple ONU time slot relationship at the end of the authorized time slot sequence within multiple DBA allocation weeks is detected, or an ONU is authorized for the single or multiple time slot at the end of the authorized time slot sequence within multiple DBA allocation weeks A disconnection occurred; the remaining ONU time slot relationship remained stable.
  • one or more time slots before the occurrence of multiple ONUs in the header of the authorized time slot sequence within the DBA allocation week can be determined as suspicious time slots; the ONUs corresponding to the suspicious time slots (according to the ONU configuration index or ONU registration certification mark determination) is determined to be a suspicious ONU; (forward interference, the interference source is at the head of the queue, and the interference source slot is relatively fixed).
  • Cycle 1 Correspondence of initial timing: 1/2/3/4/5/6/7/8/9/10/11/12/13/14, located at the end of the queue ONU 12/13/14 is disturbed and occurs Go online and come back online in the next cycle;
  • Cycle 2 The timing correspondence changes from the previous cycle (or the timing correspondence does not change, but the number of ONUs that went offline in the previous cycle increases), and the ONUs 12/13/14 that went offline in the last cycle go online at the end of the team: eg The timing correspondence relationship of 1/2/3/4/5/6/7/8/9/10/11/12/13/14 changes to 1/2/3/4/5/6/7/8/9 / 10/11/14/13/12; ONU14 / 13/12 is disturbed, disconnected, and re-launched in the next cycle;
  • Cycle 3 The timing correspondence changes from the previous cycle (or the timing correspondence does not change, but the number of ONUs that went offline in the previous cycle increases), and the ONUs 14/13/12 that went offline in the last cycle go online at the end of the team: eg 1/2/3/4/5/6/7/8/9/10/11/14/13/12
  • Cycle 4 The timing correspondence changes from the previous cycle (or the timing correspondence does not change, but the number of ONUs that went offline in the previous cycle increases), and the ONU / 14/13/12 that went offline in the last cycle go online at the end of the team : For example, the corresponding sequence of 1/2/3/4/5/6/7/8/9/10/11/14/13/12 changes to 1/2/3/4/5/6/7/8 / 9/10/11/14/13/12; ONU11 / 14/13/12 was disturbed, dropped, and went online again in the next cycle;
  • Cycle 5 The timing correspondence changes from the previous cycle (or the timing correspondence does not change, but the number of ONUs that went offline in the previous cycle increases), and the ONUs 11/14/13/12 that went offline in the last cycle go online at the end of the team : For example, the corresponding sequence of 1/2/3/4/5/6/7/8/9/10/11/14/13/12 changes to 1/2/3/4/5/6/7/8 / 9/10/12/13/14/11;
  • some of the ONUs at the tail of the queue have a change in time slot correspondence or a change in the number of online and offline times, so that it is judged as forward interference (the head of the interference source queue), and the corresponding ONU1 is a critical and suspicious ONU.
  • set the relevant ONU such as ONU1 / 2/3) as a suspicious ONU.
  • Set the weight of the critical ONU to be the largest (eg priority) 3, and other suspicious ONUs to set the weights (eg ONU2 weight 2, ONU3 weight 1) according to certain strategies (eg weight is inversely proportional to the distance between the corresponding time slot and the critical time slot).
  • the strategy may include the most and the least number of disconnections on the PON port, and the most discrete statistical distribution of the number of disconnections on the ONU under the PON port (that is, the average number of disconnections If the difference is greater than a certain threshold 1, the threshold 1 can be set artificially), or an ONU whose difference between the number of disconnections of a specific ONU under the PON port and the average number of disconnections is greater than a certain threshold 2 (threshold 2 can be set manually), and these ONUs are judged as Suspicious ONUs, as well as ONUs covered by discrete distributed multiple suspicious ONUs over time slots, are all determined to be suspicious ONUs (eg, if the ONU ID is the same as the registered assigned time slot number, that is, ONU2 / 3/4/5 are continuous on the time slot , If the suspicious ONU is determined to be 2, 5, then the ONUs 2, 3, 4, and 5 are all judged
  • FIG. 12 is a flowchart of setting a suspicious ONU weight provided by an embodiment of the present invention.
  • record suspicious ONU information and update the suspicious ONU record table (contents include but are not limited to the ONU configuration index, ONU registration certification logo, ONU features Value, weight); set the weight in the list of suspicious ONUs according to a certain strategy, including but not limited to timing, disconnection times, etc.
  • S501 For the dynamic interference time slot assignment backward interference scenario described in S411 / 412, the weight of the last time slot in the determined suspicious ONU is set to the highest, and the weights of other suspicious ONUs are sequentially decreased according to the forward order of the time slots;
  • S502 For the forward interference scenario of dynamic time slot allocation described in S413 / 414, the weight of the foremost time slot in the determined suspicious ONU is set to the highest, and the weight of other suspicious ONUs is sequentially decreased according to the backward order of the time slots;
  • S503 For S420 In the fixed time slot allocation scenario, the weight of the suspicious ONU with the most or the fewest times of disconnection is set to the highest weight, and the weight of other suspicious ONUs decreases in sequence according to the order or timing relationship of the times of disconnection.
  • FIG. 13 is a flowchart of determining abnormal ONUs provided by an embodiment of the present invention.
  • one or more ONUs determined to be suspicious ONUs can be remotely turned off / on by ONU optical transmitter power and other means , Confirm the fault interference ONU, record and update the abnormal interference ONU record table.
  • Methods include but are not limited to the shutdown method. The shutdown method can be used to eliminate interference by remotely shutting down the power of a specific ONU optical transmitter.
  • the fault is detected within the observation period (if the trigger condition is met) ), If the fault does not exist, the ONU is a fault interference ONU, otherwise the next or next batch of ONUs are shut down according to the algorithm until all ONUs are traversed. Specifically, it includes the following steps: S610: Set the observation period (the observation period setting method includes but is not limited to: artificial setting, or automatic calculation based on the failure occurrence cycle time multiplied by the coefficient calculated by the ONU online and offline frequency statistics table under the PON port, Or directly obtain the value of m), and judge whether the fault occurs according to the fault triggering condition set in the second step in the observation period.
  • the observation period setting method includes but is not limited to: artificial setting, or automatic calculation based on the failure occurrence cycle time multiplied by the coefficient calculated by the ONU online and offline frequency statistics table under the PON port, Or directly obtain the value of m
  • S620 Remotely turning off the ONU can be performed according to a certain algorithm. When there are multiple suspicious ONUs, you can use shutdown or dichotomy algorithm to shut down and confirm. Methods include but are not limited to: S621: turn off the suspicious ONUs one by one according to a certain method, turn off one ONU, and within the detection period, the fault occurs (the trigger condition is met), then turn off the next ONU; if you turn off an ONU, observe If the fault does not reappear during the period (the trigger condition is not met), the ONU is considered to be an abnormal interference ONU; the turn-off methods include but are not limited to: turn off the turn-on turn according to the weight of the suspicious ONU, turn off turn-on turn according to other strategies; S622: When using a dichotomy to shut down a suspicious ONU, you can divide the ONU according to rules (such as ONU type / version, number of online and offline, weight, etc.), and set the observation period (the observation period can be set manually, or according
  • FIG. 14 is a flowchart of automatic learning and re-detection judgment of update weights provided by an embodiment of the present invention.
  • recording the characteristic value (model / version) of an ONU that abnormally interferes, and meeting the trigger detection condition in the next round is suspicious for a new
  • the ONU record table is updated, and the weight of the related ONU in the suspicious ONU record table is updated according to the matching condition of the ONU feature value.
  • the sixth step for positioning specifically including the following steps: S801: reinitialize and record the ONU authorized time slot information table; S802: according to the trigger condition, when the burst interference detection is performed again, the suspicious ONU is judged.
  • the learning accuracy of the ONU information is recorded through multiple processing to improve the judgment accuracy of the suspected ONU, so that the location confirmation solution is simpler and more flexible, and the cost is relatively low.
  • the OLT directly detects the change in the correspondence relationship between the registration authorization time slot and the ONU information, determines the possible time slot of burst interference, or counts the difference in the ONU disconnection times Find the corresponding ONU, and set and update the interference weight of the suspicious ONU in multiple rounds of detection, narrow the scope of judging abnormal ONUs, and improve judgment efficiency and accuracy.

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Abstract

本发明公开了一种突发式长发光干扰ONU定位的方法及装置，其方法包括：无源光网络的光线路终端xPON OLT局端设备对每个无源光网络PON口下的ONU授权时隙变化或ONU上下线次数分别进行实时监测，获取所述PON口下发生突发式长发光干扰的多个可疑ONU；所述xPON OLT局端设备通过对所述多个可疑ONU进行故障排查处理，得到所述PON口下发生突发式长发光干扰的干扰ONU。

Description

一种突发式长发光干扰ONU定位的方法及装置
交叉引用
本发明要求在2018年10月25日提交至中国专利局、申请号为201811248676.7、发明名称为“一种突发式长发光干扰ONU定位的方法及装置”的中国专利申请的优先权，该申请的全部内容通过引用结合在本发明中。
技术领域
本发明涉及无源光网络技术领域，特别涉及一种突发式长发光干扰ONU(Optical Network Unit，光网络单元)定位的方法及装置。
背景技术
在无源光网络的xPON(Passive Optical Network，无源光纤网络)网络中，常见组网系统如图2所示。该系统由EMS(Element Management System，网管服务器)100、OLT(Optical Line Terminal，光线路终端)200、ODN(Optical Distribution Network，光分配网络)300和若干个ONU400组成。EMS100，用于对OLT200以及xPON网络的配置、管理以及维护等工作；EMS网管维护并管理OLT200、ONU400的历史信息以及相关告警与通知消息，并可根据相关告警与通知消息完成对具体异常ONU的判断与其具体物理位置的查找。OLT200，用于启动ONU的发现过程，为ONU400分配链路标识完成ONU400在OLT200上注册与认证，并为ONU400分配相应的上行时隙。ONU400在OLT200为其配置分配的时隙中上传数据，上行方向各个时隙正常情况只被该ONU独占。OLT200维护基于PON口为单位维护ONU上线历史信息表，通过RTT(Round-Trip Time，往返时间)漂移或ONU上行误码告警启动长发光检测，并通过相关策略定位长发光ONU。ODN300，用于在OLT200下连接数量不等的ONU400，作为OLT200与ONU400之间直接的物理连接通道，可能由多个物理器件组合而成。ONU400，用于承担家庭用户的终端设备的角色，接受OLT200的管理，在注册过程中接受OLT200分配的链路标识；并在OLT200统一分配的时隙窗口中上传数据完成业务。OLT作为中心局端设备通过ODN网络连接汇聚多个ONU设备。xPON网络作为“点对多点”的拓扑结构：OLT通过TDMA(Time Division Multiple Access，时分多址接入)方式给从ONU分配上行传输时隙，ONU必须在OLT分配的 上行Bwmap(Bandwidth Map，带宽时隙)中打开激光器并发送数据。
图1介绍了xPON注册流程图，以EPON(Ethernet Passive Optical Network，以太网的无源光网络设备)为例，其他系统类似。为保证各个ONU上行数据的有效发送，ONU只能在OLT控制分配(基于ONU标识)的不同上行时隙(即授权时隙，且各个时隙之间互相独立)打开激光器并发送数据；ONU在非授权时隙内必须关闭激光器(保持静默)，以避免激光器发光对其他上行时隙的影响。
xPON网络中，OLT以PON口为单位为每个ONU分配一个唯一的标识作为ONU的链路标识(如EPON系统中采用LIID(Logical Link Identifier，)作为ONU的唯一标识，如GPON系统中采用ONUID(ONU Identifier)作为ONU的唯一标识)。OLT根据ONU链路标识为ONU分配授权时隙。当同PON口下某ONU异常，不按OLT的控制在非授权时隙内打开激光器或发送数据时，即产生长发光干扰，对该PON口使用正常分配时隙工作的其他ONU上行发送数据造成干扰。导致无法恢复出正常数据，进而产生上行丢包；严重时将导致相关被干扰ONU离线。长发光干扰根据干扰时间可分为两类：持续长发光干扰与突发式长发光干扰。
1)持续长发光干扰：长发光干扰持续时间较长，大于硬件检测精度即可直接被硬件信号检测到(原理：PON上行方向光信号是突发的，非持续续的；若检测到持续光信号，即认为存在上行干扰)；且干扰所有ONU的上行时隙，故障现象明显，容易被检测。且由于干扰持续时间长，因此可用于故障源定位的时间也较长。
2)突发式长发光干扰：当长发光干扰是突发的，持续时间短，小于硬件检测精度时，无法被有效检测；且故障持续时间短，只影响对应PON口下部分ONU，而传统定位方法往往需要较长的定位时间，因此很难定位。
发明内容
根据本发明实施例提供的方案解决的技术问题是现网xPON设备中出现某些ONU由于软硬件异常导致的在OLT授权时隙外发光，并影响邻近时隙ONU数据传输，严重时导致相关邻近ONU掉线的问题，以及因突发式式干扰的故障持续时间短、被干扰ONU范围/程度不确定的特点，所造成的检测难度大以及定位效率低。
根据本发明实施例提供的一种突发式长发光干扰ONU定位的方法，包 括：xPON OLT局端设备对每个PON口下的ONU授权时隙变化或ONU上下线次数分别进行实时监测，获取所述PON口下发生突发式长发光干扰的多个可疑ONU；所述xPON OLT局端通过对所述多个可疑ONU进行故障排查处理，得到所述PON口下发生突发式长发光干扰的干扰ONU。
根据本发明实施例提供的一种突发式长发光干扰ONU定位的装置，包括：监测模块，用于对每个PON口下的ONU授权时隙变化或ONU上下线次数分别进行实时监测，获取所述PON口下发生突发式长发光干扰的多个可疑ONU；定位模块，用于通过对所述多个可疑ONU进行故障排查处理，得到所述PON口下发生突发式长发光干扰的干扰ONU。
根据本发明实施例提供的一种突发式长发光干扰ONU定位的设备，所述设备包括：处理器，以及与所述处理器耦接的存储器；所述存储器上存储有可在所述处理器上运行的突发式长发光干扰ONU定位的程序，所述突发式长发光干扰ONU定位的程序被所述处理器执行时实现根据本发明实施例提供的所述的突发式长发光干扰ONU定位的方法的步骤。
根据本发明实施例提供的一种计算机存储介质，所述计算机存储介质存储有突发式长发光干扰ONU定位的程序，所述突发式长发光干扰ONU定位的程序被处理器执行时实现根据本发明实施例提供的所述的突发式长发光干扰ONU定位的方法的步骤。
根据本发明实施例提供的一种计算机程序产品，所述计算机程序产品包括存储在非暂态计算机可读存储介质上的计算机程序，所述计算机程序包括程序指令，当所述程序指令被计算机执行时，使所述计算机执行上述任意方法实施例中的方法。
附图说明
图1是现有技术提供的xPON链路上行时分多址接入示意图；
图2是现有技术提供的xPON网络拓扑图；
图3是本发明实施例提供的一种突发式长发光干扰ONU定位的方法流程图；
图4是本发明实施例提供的一种突发式长发光干扰ONU定位的装置示意图；
图5是本发明实施例提供的xPON设备检测定位突发干扰ONU处理方法流程图；
图6是本发明实施例提供的记录ONU上下线信息与时隙对应关系流程图；
图7是本发明实施例提供的后向干扰(干扰源队列中间)多DBA周期时隙对应关系示例图；
图8是本发明实施例提供的后向干扰(干扰源队列尾部)多DBA周期时隙对应关系示例图；
图9是本发明实施例提供的前向干扰(干扰源队列中间)多DBA周期时隙对应关系示例图；
图10是本发明实施例提供的前向干扰(干扰源队列头部)多DBA周期时隙对应关系示例图；
图11是本发明实施例提供的判断可疑ONU流程图；
图12是本发明实施例提供的设置可疑ONU权重流程图；
图13是本发明实施例提供的判断异常ONU流程图；
图14是本发明实施例提供的更新权重自动学习重新检测判断流程图。
具体实施方式
以下结合附图对本发明的优选实施例进行详细说明，应当理解，以下所说明的优选实施例仅用于说明和解释本发明，并不用于限定本发明。
ONU突发式长发光干扰本质上影响的是故障ONU授权时隙在时间域内干扰与其授权时隙前(后)相邻的一个或多个授权时隙，并导致这些授权时隙的ONU出现异常。
突发式长发光干扰是TDMA机制PON的一大隐患，且在采用TDMA方式进行ONU上行授权时隙管理其他PON机制中也会存在。本发明针对上述问题，通过直接检测PON分配上行时隙与ONU标识之间的对应关系，找到与被干扰时隙相邻的疑似干扰ONU，并通过权重配置使定位效率持续提升，从而实现突发式长发光干扰ONU的有效检测与高效定位，并克服传统方法检测精度限制、定位困难问题。
本发明采用PON系统ONU授权时隙分配对应关系为检测条件，找出与被干扰时隙相邻的ONU作为疑似故障ONU，不依赖于长发光类型以及硬件能力；同时长发光干扰本质上是干扰动态授权时隙，因此通过授权时隙变化的检测，对疑似ONU的判断准确性有了极大的提升。其次，确定一个较小的疑似ONU范围、并设定疑似ONU权重。针对少数ONU并根据干扰权重进行相关处理。 并通过处理结果反馈优化权重设置，因而效率较传统方法有很大提升并在多轮处理中持续提升效率。
图3是本发明实施例提供的一种突发式长发光干扰ONU定位的方法流程图，如图3所示，包括：步骤一：xPON OLT局端设备对每个PON口下的ONU授权时隙变化或ONU上下线次数分别进行实时监测，获取所述PON口下发生突发式长发光干扰的多个可疑ONU；步骤二：所述xPON OLT局端设备通过对所述多个可疑ONU进行故障排查处理，得到所述PON口下发生突发式长发光干扰的干扰ONU。
其中，所述xPON OLT局端设备对每个PON口下的ONU授权时隙变化和ONU上下线次数分别进行实时监测，获取所述PON口下发生突发式长发光干扰的多个可疑ONU包括：所述xPON OLT局端设备通过对所述PON口上行带宽的时隙配置机制进行检查，确定所述PON口上行带宽的时隙配置机制是动态时隙配置机制还是静态时隙配置机制；若确定所述PON口上行带宽的时隙配置机制是动态时隙配置机制，则所述xPON OLT局端设备对ONU授权时隙变化进行实时监测，确定所述PON口下发生突发式长发光干扰的多个可疑ONU；若确定所述PON口上行带宽的时隙配置机制是静态时隙配置机制，则所述xPON OLT局端设备对ONU上下线次数进行实时监测，确定所述PON口下发生突发式长发光干扰的多个可疑ONU。
其中，所述xPON OLT局端设备通过对所述多个可疑ONU进行故障排查处理，得到所述PON口下发生突发式长发光干扰的干扰ONU包括：所述xPON OLT局端设备在每个检测周期内通过对所述多个可疑ONU分别设置干扰权重，得到每个可疑ONU的干扰权重值；所述xPON OLT局端设备按照所述干扰权重值的大小顺序依次对所述多个可疑ONU进行故障排查处理，得到所述PON口下发生突发式长发光干扰的干扰ONU。
其中，所述xPON OLT局端设备对ONU授权时隙变化进行实时监测，确定所述PON口下发生突发式长发光干扰的多个可疑ONU包括：所述xPON OLT局端设备根据所述PON口的多个动态DBA周期内连续出现ONU注册认证标识与授权时隙对应关系发生变化，查找与多个ONU时隙变化范围在时序上相邻的多个时隙以及多个时隙所对应的ONU，将所述多个时隙作为多个可疑时隙，将所述多个可疑时隙所对应的ONU作为突发式长发光干扰的多个可疑ONU。
其中，所述PON口上行带宽的时隙配置机制是动态时隙配置机制时，所述突发式长发光干扰包括前向突发式长发光干扰和后向突发式长发光干扰；其中， 所述xPON OLT局端设备在每个检测周期内通过对所述多个可疑ONU分别设置干扰权重，得到每个可疑ONU的干扰权重值包括：当所述突发式长发光干扰为前向突发式长发光干扰时，则所述xPON OLT局端设备在每个检测周期内将所述多个可疑ONU中最前时隙对应的ONU的干扰权重设置为最高，其他可疑ONU依据时隙后向顺序，干扰权重依次递减；当所述突发式长发光干扰为后向突发式长发光干扰时，则所述xPON OLT局端设备在每个检测周期内将所述多个可疑ONU中最后时隙对应的ONU的干扰权重设置为最高，其他可疑ONU依据时隙前向顺序，干扰权重依次递减。
其中，所述xPON OLT局端设备对ONU上下线次数进行实时监测，确定所述PON口下发生突发式长发光干扰的多个可疑ONU包括：所述xPON OLT局端设备通过对PON口设定周期内ONU上下线次数进行统计，查找出上下线次数不在预置上下线次数范围内的多个异常ONU，并将所述多个异常ONU作为突发式长发光干扰的多个可疑ONU。
其中，所述xPON OLT局端设备通过对PON口设定周期内ONU上下线次数进行统计，查找出上下线次数不在预置上下线次数范围内的多个异常ONU包括：所述xPON OLT局端设备基于绝对时间，统计并记录PON口在设定周期内的第一ONU上下线次数集合，或者基于相对时间，统计并记录PON口在以当前时间为基准的设定周期内的第二ONU上下线次数集合；所述xPON OLT局端设备将所述第一ONU上下线次数集合或所述第二ONU上下线次数集合中的每次ONU上下线次数分别与预置上下线次数范围进行比较，获取多个异常ONU；其中，所述预置上下线次数范围包括PON口下ONU掉线次数范围、与所述PON口下ONU掉线次数统计分布离散范围以及所述PON口下特定ONU掉线次数与平均掉线次数之间相差的差异范围。
其中，所述xPON OLT局端设备按照所述干扰权重值的大小顺序依次对所述多个可疑ONU进行故障排查处理，得到所述PON口下发生突发式长发光干扰的干扰ONU包括：所述xPON OLT局端设备按照所述干扰权重值的大小顺序，采用逐个关断方式对所述多个可疑ONU依次进行逐个关断，并将在观察周期内故障消失的可疑ONU确定为突发式长发干扰的干扰ONU；或者所述xPON OLT局端设备按照所述干扰权重值的大小顺序，采用两分法方式对所述多个可疑ONU进行批量关断，并将在观察周期内故障消失的可疑ONU确定为突发式长发干扰的干扰ONU。
图4是本发明实施例提供的一种突发式长发光干扰ONU定位的装置示意 图，如图4所示，包括：监测模块，用于对每个PON口下的ONU授权时隙变化或ONU上下线次数分别进行实时监测，获取所述PON口下发生突发式长发光干扰的多个可疑ONU；定位模块，用于通过对所述多个可疑ONU进行故障排查处理，得到所述PON口下发生突发式长发光干扰的干扰ONU。
根据本发明实施例提供的一种突发式长发光干扰光网络单元ONU定位的设备，所述设备包括：处理器，以及与所述处理器耦接的存储器；所述存储器上存储有可在所述处理器上运行的突发式长发光干扰ONU定位的程序，所述突发式长发光干扰ONU定位的程序被所述处理器执行时实现根据本发明实施例提供的所述的突发式长发光干扰ONU定位的方法的步骤。
根据本发明实施例提供的一种计算机存储介质，所述计算机存储介质存储有突发式长发光干扰光网络单元ONU定位的程序，所述突发式长发光干扰ONU定位的程序被处理器执行时实现根据本发明实施例提供的所述的突发式长发光干扰ONU定位的方法的步骤。
根据本发明实施例提供的一种计算机程序产品，所述计算机程序产品包括存储在非暂态计算机可读存储介质上的计算机程序，所述计算机程序包括程序指令，当所述程序指令被计算机执行时，使所述计算机执行上述任意方法实施例中的方法。
本发明实施例的检测定位方法对于LLID(EPON系统)、ONUID(GPON系统)以及其他采用TDMA工作机制的系统是一致的。
图5是本发明实施例提供的xPON设备检测定位突发干扰ONU处理方法流程图，如图5所示，包括如下步骤：
S101：xPON OLT局端设备以PON口为单位记录并维护多个DBA分配周期内ONU注册认证标识(包括但不限于LLID/ONU ID/ALLOC ID等实际用于为ONU分配上行时隙的标识)与授权时隙的对应关系表(以下简称“授权时隙信息表”，举例如表1所示)；该对应关系表内容包括但不限于：DBA周期序号、上行授权时隙编号、ONU信息(ONU信息包括：ONU注册认证标识、ONU配置索引、ONU上下线次数)；根据一定条件(包括但不限于设置定时器，或根据ONU上下线事件触发)初始化记录ONU授权时隙信息表。
表1 授权时隙信息表
Figure PCTCN2019112825-appb-000001
Figure PCTCN2019112825-appb-000002
xPON OLT局端设备以PON口为单位，记录该PON口下ONU的不同时间范围段的上下线次数统计表(以下简称“注册次数统计表”，举例如表2所示)，时间范围段可根据一定策略进行配置：包括但不限于：ONU配置索引，基于不同时间单位的上下线次数统计(如当前24小时(绝对时间)的上下线次数，最近24小时(相对时间)的上下线次数；当前12小时(绝对时间)的上下线次数，最近12小时(相对时间)的上下线次数；当前4小时(绝对时间)的上下线次数，最近4小时(相对时间)的上下线次数；当前1小时(绝对时间)的上下线次数，最近1小时(相对时间)的上下线次数等)。
表2 注册次数统计表
Figure PCTCN2019112825-appb-000003
xPON OLT局端设备以PON口为单位，记录并维护可疑ONU记录表，举例如表3所示(内容包括但不限于ONU配置索引、ONU注册认证标识、ONU特征值、权重)。
表3 可疑ONU记录表
Figure PCTCN2019112825-appb-000004
xPON局端设备记录并维护异常干扰ONU记录表，举例如表4所示内容包括但不限于ONU标识(包括但不限于mac、sn)、ONU特征值(包括但不限于型号、类型、版本)。
表4 异常干扰ONU记录表
Figure PCTCN2019112825-appb-000005
S102：当PON口满足一定触发条件时，xPON OLT局端设备以PON口为单位启动检测并记录ONU授权时隙变化与ONU上下线次数；默认的触发条件：包括但不限于一定时间内(包括但不限于人为指定、根据一定策略配置等)该PON口下多个ONU出现离线，或该PON口下ONU离线次数高于某阈值(阈值可人为设定，或根据硬件特性默认指定)或多个条件的组合。且检测触发条件可人为配置；
S103：根据一定策略连续记录ONU授权时隙变化信息与ONU上下线次数，并根据DBA带宽分配周期同步更新“授权时隙信息表”及“注册次数统计表”；PON口连续记录多个动态DBA周期内的ONU注册认证标识与授权时隙的对应关系表，当ONU掉线或上线等导致ONU注册认证标识与授权时隙的对应关系(以下简称“ONU时隙关系”)发生变化时，记录ONU时隙应关系，维护并更新“授权时隙信息表”；当出现ONU掉线或上线时，记录ONU信息中ONU上下线次数，维护并更新“注册次数统计表”；连续记录多个动态DBA周期，记录次数：可人为设定，或根据一定方法确认，方法包括但不限于：该PON口下配置ONU数量乘以参数n决定(包含一个n的默认值，如3，并可人为修改)；或连续记录，且在触发条件消失后再记录m个动态DBA周期(包含一个m的默认值，如10，并可人为修改)。
S104：第四步：结合PON口上行时隙分配特性判断出可疑ONU；当上行带宽是动态分配时(即ONU掉线后，重新上线后会分配新的上行授权时隙，即ONU授权时隙对应关系发生变化)：结合初始化ONU授权时隙信息表与每DBA周期ONU授权时隙信息，读取并检测“授权时隙信息表”中每个动态DBA周期的ONU与时隙对应关系是否发生变化，若多个DBA周期内出现ONU与时隙对应关系发生变化，找到与多个ONU时隙变化范围在时序上相邻的时隙以及对应的ONU，将该相邻时隙判断为可疑时隙，对应的ONU判断为可疑ONU；当 上行带宽是静态分配时(即ONU掉线后，重新上线会分配原有的上行授权时隙，即ONU授权时隙对应关系不发生变化)，通过对一定周期内ONU上下线次数差异分析，找出差异最大的ONU，判断为可疑ONU；
S105：将可疑ONU信息记录并更新可疑ONU记录表(内容包括但不限于ONU配置索引、ONU注册认证标识、ONU特征值、权重)。并根据一定策略设置可疑ONU列表中的ONU的可疑权重；策略包括但不限于依据与临界时序的前后顺序关系、掉线次数等；
S106：依据可疑ONU列表中可疑权重从高到底，根据一定方法远程关断逐个对应ONU光发射机电源等手段，如：首先关断权重最高可疑ONU，并观察一段时间，若故障依然存在，则关断权重次高可疑ONU，再观察一段时间，依次类推，直到故障消失，则确认当前关断ONU为故障干扰ONU，记录并更新异常干扰ONU记录表。方法包括但不限于关断法；关断方法可通过远程关断特定ONU光发射机电源等方法用来消除干扰，并在关闭特定ONU后，在观察周期内检测故障是否存在(是否满足触发条件)，如果故障不存在则该ONU为故障干扰ONU，否则则根据算法对下一个或下一批ONU进行关断，直至遍历所有ONU；
S107：查询异常干扰ONU的mac地址/sn等可唯一标识ONU的信息，并通过告警或通知上报网管或第三方运维平台，并由运维人员对该异常干扰ONU进行处理。根据一定策略并结合用户台帐信息，主动远程隔离或查找具体位置并现场处理。
网管获取OLT上报的异常ONU信息记录表，维护并更新网管本地的异常ONU信息记录表。
S108：记录异常干扰ONU的特征值(型号/版本)，在下一轮满足触发检测条件是对新的可疑ONU记录表(内容包括但不限于ONU配置索引、ONU注册认证标识、ONU特征值、权重)进行更新，依据ONU特征值匹配情况对可疑ONU记录表中相关ONU的权重进行更新，并转第六步进行定位。
图6是本发明实施例提供的记录ONU上下线信息与时隙对应关系流程图，如图6所示，根据一定策略连续记录ONU授权时隙变化信息与ONU上下线次数，并根据DBA带宽分配周期同步更新“授权时隙信息表”及“注册次数统计表”；PON口连续记录多个动态DBA周期内的ONU注册认证标识与授权时隙的对应关系表，当ONU掉线或上线等导致ONU注册认证标识与授权时隙的对应关系(以下检测“ONU时隙关系”)发生变化时，记录ONU时隙应关系，维护并更 新“授权时隙信息表”；当出现ONU掉线或上线时，记录ONU信息中ONU上下线次数，维护并更新“注册次数统计表”；连续记录多个动态DBA周期，记录次数：可人为设定，或根据一定方法确认，方法包括但不限于：根据该PON口下配置ONU数量乘以参数n决定(包含一个n的默认值，如3，并可人为修改)；或连续记录，且在触发条件消失后再记录m个动态DBA周期(包含一个m的默认值，如10，并可人为修改)。包括如下步骤：S301：当出现ONU掉线或上线时，维护并更新“注册次数统计表”；策略包括但不限于：基于绝对时间，记录在指定时间单位内的ONU下线或上线次数；基于相对时间，记录在以当前时间为基准的指定时间单位内的ONU下线或上线次数；S302：当ONU掉线或上线等导致ONU注册认证标识与授权时隙的对应关系发生变化时，维护并更新“授权时隙信息表”。
策略包括但不限于：记录每个动态DBA周期内的ONU注册认证标识与授权时隙的对应关系；当出现ONU掉线时，记录每个动态DBA周期内的ONU注册认证标识与授权时隙的对应关系；当出现ONU上线时，记录每个动态DBA周期内的ONU注册认证标识与授权时隙的对应关系。
图11是本发明实施例提供的判断可疑ONU流程图，如图11所示，结合初始化ONU授权时隙信息表与每DBA周期ONU授权时隙信息，读取并检测“授权时隙信息表”中每个动态DBA周期的ONU时隙关系是否发生变化，并结合PON口上行带宽的时隙分配特性判断可疑ONU，包括如下步骤：S410：当PON口采用动态时隙配置机制时(即每次ONU掉线重新上线时，PON口会动态分配一个新的ONU注册认证标识)，在x个动态DBA周期内进行检测并记录ONU时隙关系及对应的ONU掉线/上线次数(检测次数确认方法包括但不限于：x可人为配置值，并根据一定条件赋予默认值；或x＝PON口下ONU数量*n，并忽略ONU时隙对应关系与前一周期未发生变化的DBA周期)，并排除ONU掉电等原因导致ONU时隙关系发生变化；S411：检测到某特定时隙后的单个或连续多个ONU时隙对应关系发生变化(即意味该时隙后，出现ONU离线)，且特定时隙前的ONU时隙对应关系保持稳定；将该特定时隙或根据一定策略将与该特定时隙前向相邻的若干时隙判断为可疑时隙；并将可疑时隙对应的ONU(根据ONU配置索引或ONU注册认证标识判定)判定为可疑ONU；(后向干扰，且干扰源不在队尾，干扰源时隙相对固定)。
进一步的，具体实施举例如图7后向干扰(干扰源队列中间)多DBA周期时隙对应关系图所示：
周期1：初始时序对应关系：1/2/3/4/5/6/7/8/9/10/11/12/13/14，ONU 7/8受到干扰，发生掉线，并在下一个周期重新上线；
周期2：时序对应关系较上周期发生变化，1/2/3/4/5/6/7/8/9/10/11/12/13/14的时序对应关系变化为1/2/3/4/5/6/9/10/11/12/13/14/7/8；ONU9/10/11受到干扰，发生掉线，并在下一个周期重新上线；
周期3：时序对应关系较上周期发生变化，1/2/3/4/5/6/9/10/11/12/13/14/7/8的时序对应关系变化为1/2/3/4/5/6/12/13/14/7/8/9/10/11；ONU12受到干扰，发生掉线，并在下一个周期重新上线；
周期4：时序对应关系较上周期发生变化，1/2/3/4/5/6/12/13/14/7/8/9/10/11；的时序对应关系变化为1/2/3/4/5/6/13/14/7/8/9/10/11/12；ONU13/14/7受到干扰，发生掉线，并在下一个周期重新上线；
周期5：时序对应关系较上周期发生变化，1/2/3/4/5/6/13/14/7/8/9/10/11/12的时序对应关系变化为1/2/3/4/5/6/8/9/10/11/12/13/14/7；
由于slot 6后的ONU时隙对应关系均发生变化，slot6为临界时隙，从而判断是后向干扰(干扰源队列中间)，相应ONU6为临界可疑ONU。根据一定策略，设定与slot6前向相邻的相关ONU(如ONU4/5/6)为可疑ONU。设置临界可疑ONU的权重最大(如priority 3)，其他可疑ONU根据一定策略(如权重与对应时隙与临界时隙的距离成反比)分别设置权重(如ONU5权重2、ONU4权重1)。
S412：检测到连续ONU注册认证标识分配的时隙均发生(过)向前偏移一位或多位(即对应DBA分配周期内出现位于整个队列前部的ONU出现掉线)，且向前偏移的ONU队列的首个ONU占据DBA周期分配的第一个时隙；或在多个DBA分配周内授权时隙序列尾部特定时隙后的单个或多个ONU时隙关系发生变化(或在多个DBA分配周内授权时隙序列尾部的多个时隙的ONU发生掉线)；将出现ONU注册认证标识分配的时隙均发生向前偏移的ONU队列的最后一个或多个ONU(排除初始化ONU时隙关系中位于队列前部的ONU)判定为可疑ONU；或DBA分配周内授权时隙序列尾部的多个发生ONU发生掉线对应时隙前的一个特定时隙或相关多个时隙判定为可疑时隙，并将可疑时隙对应的ONU(根据ONU配置索引或ONU注册认证标识判定)判定为可疑ONU；(后向干扰，且干扰源曾经在队尾，干扰源时隙相对不固定(发生前移)、并逐渐保持稳定)。
进一步的，具体实施举例如图8后向干扰(干扰源队列尾部)多DBA周期 时隙对应关系图所示：
周期1：初始时序对应关系：1/2/3/4/5/6/7/8/9/10/11/12/13/14，ONU 1/2/3受到干扰，发生掉线，并在下一个周期重新上线；
周期2：时序对应关系较上周期发生变化，所有时隙对应关系均发生前移，且上一周期掉线ONU1/2/3在队尾上线：如1/2/3/4/5/6/7/8/9/10/11/12/13/14的时序对应关系变化为4/5/6/7/8/9/10/11/12/13/14/1/2/3；ONU1/2受到干扰，发生掉线，并在下一个周期重新上线；
周期3：时序对应关系较上周期发生变化，4/5/6/7/8/9/10/11/12/13/14/1/2/3的时序对应关系变化为4/5/6/7/8/9/10/11/12/13/14/3/1/2(或时序对应关系未发生变化，但上一周期掉线ONU的上线次数增加)；ONU3/1/2/4受到干扰，发生掉线，并在下一个周期重新上线；
周期4：时序对应关系较上周期发生变化，4/5/6/7/8/9/10/11/12/13/14/3/1/2的时序对应关系变化为5/6/7/8/9/10/11/12/13/14/3/1/2/4(或时序对应关系未发生变化，但上一周期掉线ONU的上线次数增加)；ONU3/1/2/4受到干扰，发生掉线，并在下一个周期重新上线；
周期5：时序对应关系较上周期发生变化，5/6/7/8/9/10/11/12/13/14/3/1/2/4的时序对应关系变化为5/6/7/8/9/10/11/12/13/14/3/2/1/4(或时序对应关系未发生变化，但上一周期掉线ONU的上线次数增加)；
可见ONU14对应时序前移范围的尾部临界时隙，且其后ONU时序关系发生变化或出现掉线，从而判断是后向干扰(干扰源队列曾经尾部)，相应ONU14为临界可疑ONU。根据一定策略，设定相关ONU(如ONU12/13/14)为可疑ONU。设置临界ONU的权重最大(如priority 3)，其他可疑ONU根据一定策略(如权重与对应时隙与临界时隙的距离成反比)分别设置权重(如ONU13权重2、ONU12权重1)。
S413：检测到单个或多个ONU注册认证标识分配的时隙均发生向前偏移一位或多位(即对应多个DBA分配周期内出现位于整个队列中特定ONU对应时隙前向相邻的单个或多个ONU出现掉线)，且存在过向前偏移的ONU时隙关系队列的首个ONU未占据DBA周期分配的第一个时隙；将出现ONU注册认证标识分配的时隙均发生向前偏移的ONU队列的最前一个或多个ONU判定为可疑ONU；(前向干扰，且干扰源在队中，干扰源时隙相对不固定(发生前移))。
进一步的，具体实施举例如图9前向干扰(干扰源队列中间)多DBA周期时隙对应关系图所示：
周期1：初始时序对应关系：1/2/3/4/5/6/7/8/9/10/11/12/13/14，ONU 7/8受到干扰，发生掉线，并在下一个周期重新上线；
周期2：时序对应关系较上周期发生变化，部分时隙对应关系均发生前移，且上一周期掉线ONU7/8在队尾上线：如1/2/3/4/5/6/7/8/9/10/11/12/13/14的时序对应关系变化为1/2/3/4/5/6/9/10/11/12/13/14/7/8；ONU4/5/6受到干扰，发生掉线，并在下一个周期重新上线；
周期3：时序对应关系较上周期发生变化，部分时隙对应关系均发生前移，且上一周期掉线ONU4/5/6在队尾上线：1/2/3/4/5/6/9/10/11/12/13/14/7/8的时序对应关系变化为1/2/3/9/10/11/12/13/14/7/8/4/5/6；ONU/1/2/3受到干扰，发生掉线，并在下一个周期重新上线；
周期4时序对应关系较上周期发生变化，部分时隙对应关系均发生前移，且之前多个周期发生前移的时序的排序最前ONU(如ONU9)移动到时序首部，且上一周期掉线ONU1/2/3在队尾上线：1/2/3/9/10/11/12/13/14/7/8/4/5/6的时序对应关系变化为9/10/11/12/13/14/7/8/4/5/6/1/2/3；ONU6/1/2/3受到干扰，发生掉线，并在下一个周期重新上线；
周期5：时序对应关系较上周期发生变化，9/10/11/12/13/14/7/8/4/5/6/1/2/3的时序对应关系变化为9/10/11/12/13/14/7/8/4/5/3/2/1/6(或时序对应关系未发生变化，但上一周期掉线ONU的上线次数增加)；
可见ONU9对应的时序前移范围的首部临界时隙，且多个周期后移至队列首部，且其后ONU时序关系发生变化或出现掉线，从而判断是前向干扰(干扰源队列中间)，相应ONU9为临界可疑ONU。根据一定策略，设定相关ONU(如ONU9/10/11)为可疑ONU。设置临界ONU的权重最大(如priority 3)，其他可疑ONU根据一定策略(如权重与对应时隙与临界时隙的距离成反比)分别设置权重(如ONU10权重2、ONU11权重1)。
S414：检测到在多个DBA分配周内授权时隙序列尾部的单个或多个ONU时隙关系发生变化，或在多个DBA分配周内授权时隙序列尾部的单个或多个时隙的ONU发生掉线；其余ONU时隙关系保持稳定。
则可将DBA分配周内授权时隙序列首部的多个发生ONU发生掉线时隙前的一个或多个时隙判定为可疑时隙；并将可疑时隙对应的ONU(根据ONU配置索引或ONU注册认证标识判定)判定为可疑ONU；(前向干扰，干扰源在队列头部，干扰源时隙相对固定)。
进一步的，具体实施举例如图10前向干扰(干扰源队列头部)多DBA周 期时隙对应关系图所示：
周期1：初始时序对应关系：1/2/3/4/5/6/7/8/9/10/11/12/13/14，位于队列尾部ONU 12/13/14受到干扰，发生掉线，并在下一个周期重新上线；
周期2：时序对应关系较上周期发生变化(或时序对应关系未发生变化，但上一周期掉线ONU的上线次数增加)，且上一周期掉线ONU12/13/14在队尾上线：如1/2/3/4/5/6/7/8/9/10/11/12/13/14的时序对应关系变化为1/2/3/4/5/6/7/8/9/10/11/14/13/12；ONU14/13/12受到干扰，发生掉线，并在下一个周期重新上线；
周期3：时序对应关系较上周期发生变化(或时序对应关系未发生变化，但上一周期掉线ONU的上线次数增加)，且上一周期掉线ONU14/13/12在队尾上线：如1/2/3/4/5/6/7/8/9/10/11/14/13/12的时序对应关系变化为1/2/3/4/5/6/7/8/9/10/11/14/13/12；ONU14/13/12受到干扰，发生掉线，并在下一个周期重新上线；
周期4：时序对应关系较上周期发生变化(或时序对应关系未发生变化，但上一周期掉线ONU的上线次数增加)，且上一周期掉线ONU/14/13/12在队尾上线：如1/2/3/4/5/6/7/8/9/10/11/14/13/12的时序对应关系变化为1/2/3/4/5/6/7/8/9/10/11/14/13/12；ONU11/14/13/12受到干扰，发生掉线，并在下一个周期重新上线；
周期5：时序对应关系较上周期发生变化(或时序对应关系未发生变化，但上一周期掉线ONU的上线次数增加)，且上一周期掉线ONU11/14/13/12在队尾上线：如1/2/3/4/5/6/7/8/9/10/11/14/13/12的时序对应关系变化为1/2/3/4/5/6/7/8/9/10/12/13/14/11；
可见队列尾部的部分ONU出现时隙对应关系变化或上下线次数发生变化，从而判断是前向干扰(干扰源队列头部)，相应ONU1为临界可疑ONU。根据一定策略，设定相关ONU(如ONU1/2/3)为可疑ONU。设置临界ONU的权重最大(如priority 3)，其他可疑ONU根据一定策略(如权重与对应时隙与临界时隙的距离成反比)分别设置权重(如ONU2权重2、ONU3权重1)。
S420：当PON口采用固定时隙配置机制时(即每次ONU掉线重新上线时，PON口会使用原有的ONU注册认证标识)时，检测并更新对应ONU的上下线次数统计。
根据一定策略识别出检测周期内掉线次数存在异常的ONU；策略可包括该PON口下掉线次数最多、最少、与该PON口下ONU掉线次数统计分布最离散 (即与平均掉线次数差异大于一定阈值1，阈值1可人为设定)、或该PON口下特定ONU掉线次数与平均掉线次数差异大于一定阈值2(阈值2可人为设定)的ONU，将这些ONU判定为可疑ONU，以及分布离散的多个可疑ONU在时隙上覆盖的ONU均判定为可疑ONU(例：如果ONU ID与注册分配时隙号相同，即ONU2/3/4/5在时隙上连续，判断可疑ONU为2、5，则将ONU2、3、4、5均判为可疑ONU)。
图12是本发明实施例提供的设置可疑ONU权重流程图，如图12所示，将可疑ONU信息记录并更新可疑ONU记录表(内容包括但不限于ONU配置索引、ONU注册认证标识、ONU特征值、权重)；根据一定策略设置可疑ONU列表中的权重，策略包括但不限于依据对时序、掉线次数等。包括如下步骤：S501：针对S411/412所述动态时隙分配后向干扰场景，将判断的可疑ONU中最后时隙的权重设为最高，其他可疑ONU依据时隙前向顺序，权重依次递减；S502：针对S413/414所述动态时隙分配前向干扰场景，将判断的可疑ONU中最前时隙的权重设为最高，其他可疑ONU依据时隙后向顺序，权重依次递减；S503：针对S420所述固定时隙分配场景，将掉线次数最多或最少的可疑ONU的权重设为最高，其他可疑ONU依据掉线次数顺序或时序关系，权重依次递减。
图13是本发明实施例提供的判断异常ONU流程图，如图13所示，依据可疑ONU列表，将判定为可疑ONU的一个或多个ONU通过远程关断/打开ONU光发射机电源等手段，确认故障干扰ONU，记录并更新异常干扰ONU记录表。方法包括但不限于关断法，关断方法可通过远程关断特定ONU光发射机电源等方法用来消除干扰，并在关闭特定ONU后，在观察周期内检测故障是否存在(是否满足触发条件)，如果故障不存在则该ONU为故障干扰ONU，否则根据算法对下一个或下一批ONU进行关断，直至遍历所有ONU。具体包括如下步骤：S610：设置观察周期(观察周期设定方法包括但不限于：人为设定，或根据该PON口下ONU的上下线次数统计表计算的故障出现周期时间乘以系数自动计算，或直接获取m值)，并在观察周期内根据第二步中设定的故障触发条件判断故障是否出现。
S620：远程关断ONU可根据一定算法来进行。当存在多个可疑ONU时，可采用逐个关断或二分法等算法进行关断确认。方法包括但不限于：S621：根据一定方法逐个关断可疑ONU，关断一个ONU，在检测周期内，故障出现(满足触发条件)，则关闭下一个ONU；若关断某ONU时，在观察周期内故障不再出现(不满足触发条件)，则认为该ONU为异常干扰ONU；逐个关断方法包括 但不限于：根据可疑ONU权重依次逐个关断，根据其他策略依次逐个关断；S622：在采用两分法关断可疑ONU时，可根据规则(如ONU类型/版本、上下线次数、权重等)划分ONU，设置观察周期(观察周期可人为设定，或根据该PON口下ONU的上下线次数统计表计算的故障出现周期时间乘以系数自动计算)，按两分法关闭批量ONU，观察在观察周期内故障是否出现(是否满足触发条件)；若关断某批ONU，故障依然出现，继续关断PON口下剩余ONU；若关断某批ONU后，故障消失；则在打开此批ONU并继续以两分法处理，直到关断某ONU时，在观察周期内故障不再出现(不满足触发条件)，则认为该ONU为异常干扰ONU；S630：获取异常干扰ONU信息，记录并更新异常干扰ONU记录表。
图14是本发明实施例提供的更新权重自动学习重新检测判断流程图，如图14所示，记录异常干扰ONU的特征值(型号/版本)，在下一轮满足触发检测条件是对新的可疑ONU记录表进行更新，依据ONU特征值匹配情况对可疑ONU记录表中相关ONU的权重进行更新。并转第六步进行定位，具体包括如下步骤：S801：重新初始化记录ONU授权时隙信息表；S802：根据触发条件，再次进行突发干扰检测时，判断可疑ONU。与可疑ONU记录表中的ONU信息进行比对，并更新历史可疑故障ONU记录表：当可疑ONU不在记录表中，则添加到表中；当可疑ONU已经在记录表中，则权重加一；S803：网元获取网管或查询本地的异常干扰ONU信息记录表。比对可疑ONU信息记录表与异常干扰ONU记录表，当ONU特征信息一致的，在可疑ONU信息记录表中对应ONU的权重加一；S804：系统根据记录可疑ONU的权重信息，转第六步，优先对高权重ONU进行关断及确认操作。
根据本发明实施例提供的方案，通过对多次处理记录ONU信息的学习，提升对疑似ONU的判断精度，从而定位确认方案更加简单与灵活，且成本也比较低。
根据本发明实施例提供的方案，由OLT在现有技术体制下，通过直接检测注册授权时隙与ONU信息对应关系变化、判断突发式干扰可能的时隙，或通过ONU掉线次数统计差异找到对应的ONU，以及设置并在多轮检测中更新可疑ONU的干扰权重，缩小判断异常ONU的范围，提高判断效率与精确度。
尽管上文对本发明进行了详细说明，但是本发明不限于此，本技术领域技术人员可以根据本发明的原理进行各种修改。因此，凡按照本发明原理所作的修改，都应当理解为落入本发明的保护范围。

Claims (10)

  1. 一种突发式长发光干扰光网络单元ONU定位的方法，其中，包括：
    无源光网络的光线路终端xPON OLT局端设备对每个无源光网络PON口下的ONU授权时隙变化或ONU上下线次数分别进行实时监测，获取所述PON口下发生突发式长发光干扰的多个可疑ONU；
    所述xPON OLT局端设备通过对所述多个可疑ONU进行故障排查处理，得到所述PON口下发生突发式长发光干扰的干扰ONU。
  2. 根据权利要求1所述的方法，其中，所述xPON OLT局端设备对每个PON口下的ONU授权时隙变化或ONU上下线次数分别进行实时监测，获取所述PON口下发生突发式长发光干扰的多个可疑ONU包括：
    所述xPON OLT局端设备通过对所述PON口上行带宽的时隙配置机制进行检查，确定所述PON口上行带宽的时隙配置机制是动态时隙配置机制还是静态时隙配置机制；
    若确定所述PON口上行带宽的时隙配置机制是动态时隙配置机制，则所述xPON OLT局端设备对ONU授权时隙变化进行实时监测，确定所述PON口下发生突发式长发光干扰的多个可疑ONU；
    若确定所述PON口上行带宽的时隙配置机制是静态时隙配置机制，则所述xPON OLT局端设备对ONU上下线次数进行实时监测，确定所述PON口下发生突发式长发光干扰的多个可疑ONU。
  3. 根据权利要求1或2所述的方法，其中，所述xPON OLT局端设备通过对所述多个可疑ONU进行故障排查处理，得到所述PON口下发生突发式长发光干扰的干扰ONU包括：
    所述xPON OLT局端设备在每个检测周期内通过对所述多个可疑ONU分别设置干扰权重，得到每个可疑ONU的干扰权重值；
    所述xPON OLT局端设备按照所述干扰权重值的大小顺序依次对所述多个可疑ONU进行故障排查处理，得到所述PON口下发生突发式长发光干扰的干扰ONU。
  4. 根据权利要求2所述的方法，其中，所述xPON OLT局端设备对ONU授权时隙变化进行实时监测，确定所述PON口下发生突发式长发光干扰的多个可疑ONU包括：
    所述xPON OLT局端设备根据所述PON口的多个动态DBA周期内连续出现ONU注册认证标识与授权时隙对应关系发生变化，查找与多个ONU时隙变化范围在时序上相邻的多个时隙以及多个时隙所对应的ONU，将所述多个时隙作为多个可疑时隙，将所述多个可疑时隙所对应的ONU作为突发式长发光干扰的多个可疑ONU。
  5. 根据权利要求4所述的方法，其中，所述PON口上行带宽的时隙配置机制是动态时隙配置机制时，所述突发式长发光干扰包括前向突发式长发光干扰和后向突发式长发光干扰；其中，所述xPON OLT局端设备在每个检测周期内通过对所述多个可疑ONU分别设置干扰权重，得到每个可疑ONU的干扰权重值包括：
    当所述突发式长发光干扰为前向突发式长发光干扰时，则所述xPON OLT局端设备在每个检测周期内将所述多个可疑ONU中最前时隙对应的ONU的干扰权重设置为最高，其他可疑ONU依据时隙后向顺序，干扰权重依次递减；
    当所述突发式长发光干扰为后向突发式长发光干扰时，则所述xPON OLT局端设备在每个检测周期内将所述多个可疑ONU中最后时隙对应的ONU的干扰权重设置为最高，其他可疑ONU依据时隙前向顺序，干扰权重依次递减。
  6. 根据权利要求2所述的方法，其中，所述xPON OLT局端设备对ONU上下线次数进行实时监测，确定所述PON口下发生突发式长发光干扰的多个可疑ONU包括：
    所述xPON OLT局端设备通过对PON口设定周期内ONU上下线次数进行统计，查找出上下线次数不在预置上下线次数范围内的多个异常ONU，并将所述多个异常ONU作为突发式长发光干扰的多个可疑ONU。
  7. 根据权利要求6所述的方法，其中，所述xPON OLT局端设备通过对PON口设定周期内ONU上下线次数进行统计，查找出上下线次数不在预置上下线次数范围内的多个异常ONU包括：
    所述xPON OLT局端设备基于绝对时间，统计并记录PON口在设定周期内 的第一ONU上下线次数集合，或者基于相对时间，统计并记录PON口在以当前时间为基准的设定周期内的第二ONU上下线次数集合；
    所述xPON OLT局端设备将所述第一ONU上下线次数集合或所述第二ONU上下线次数集合中的每次ONU上下线次数分别与预置上下线次数范围进行比较，获取多个异常ONU；
    其中，所述预置上下线次数范围包括PON口下ONU掉线次数范围、与所述PON口下ONU掉线次数统计分布离散范围以及所述PON口下特定ONU掉线次数与平均掉线次数之间相差的差异范围。
  8. 一种突发式长发光干扰光网络单元ONU定位的装置，其中，包括：
    监测模块，用于对每个无源光网络PON口下的ONU授权时隙变化或ONU上下线次数分别进行实时监测，获取所述PON口下发生突发式长发光干扰的多个可疑ONU；
    定位模块，用于通过对所述多个可疑ONU进行故障排查处理，得到所述PON口下发生突发式长发光干扰的干扰ONU。
  9. 一种突发式长发光干扰光网络单元ONU定位的设备，其中，所述设备包括：处理器，以及与所述处理器耦接的存储器；所述存储器上存储有可在所述处理器上运行的突发式长发光干扰ONU定位的程序，所述突发式长发光干扰ONU定位的程序被所述处理器执行时实现如权利要求1至7中任一项所述的突发式长发光干扰ONU定位的方法的步骤。
  10. 一种计算机存储介质，其中，所述计算机存储介质存储有突发式长发光干扰光网络单元ONU定位的程序，所述突发式长发光干扰ONU定位的程序被处理器执行时实现如权利要求1至7中任一项所述的突发式长发光干扰ONU定位的方法的步骤。
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CN113727223A (zh) * 2021-08-18 2021-11-30 烽火通信科技股份有限公司 一种上行数据发送方法、异常发光检测方法、设备及系统
CN113727223B (zh) * 2021-08-18 2023-11-03 烽火通信科技股份有限公司 一种上行数据发送方法、异常发光检测方法、设备及系统

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