CN107294595B

CN107294595B - Detection method and device for long-luminescence optical network unit and optical line terminal

Info

Publication number: CN107294595B
Application number: CN201610190882.1A
Authority: CN
Inventors: 余辰东; 于金辉
Original assignee: Nanjing ZTE New Software Co Ltd
Current assignee: Nanjing ZTE New Software Co Ltd
Priority date: 2016-03-30
Filing date: 2016-03-30
Publication date: 2020-09-04
Anticipated expiration: 2036-03-30
Also published as: WO2017166546A1; CN107294595A

Abstract

The invention provides a detection method and a detection device for a long-luminous optical network unit and an optical line terminal, which solve the problem that the long-luminous ONU is difficult to position due to the dynamic change of an ONU uplink authorization time slot. The method of the invention comprises the following steps: after the ONU fault alarm is detected, fixedly allocating a time slot for each ONU in communication connection with the OLT, and recording the corresponding relation between the ONU identification of each ONU and the allocated time slot of the ONU; detecting and processing the long luminous signals of the ONU to obtain a time slot range corresponding to the long luminous signals of the ONU; determining a suspicious fault ONU set according to the corresponding relation between the ONU identification and the ONU allocated time slot and the time slot range corresponding to the ONU long luminous signal; and detecting the long-luminous ONU in the suspicious fault ONU set. The invention solves the problem of difficult positioning of the long-luminous ONU caused by the dynamic change of the ONU uplink authorization time slot by fixedly allocating the time slot for the ONU.

Description

Detection method and device for long-luminescence optical network unit and optical line terminal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for detecting a long-wavelength optical network unit, and an optical line terminal.

Background

In an xPON Network of a passive Optical Network, a common networking System generally includes an Element Management System (EMS), an Optical Line Terminal (OLT), an Optical Distribution Network (ODN), and a plurality of Optical Network Units (ONUs), where the OLT is used as a central office device to connect and converge a plurality of ONU devices through the ODN Network, and the ONU devices implement access of user services, thereby implementing functions such as data services and configuration management. The xPON serves as a topological structure of point-to-multipoint: the transmission direction from the OLT to the ONU is a downlink direction, the downlink direction adopts a broadcasting mode to send data, and the ONU judges whether the data is valid or not according to the data identifier and decides to receive or discard the data; the transmission direction from the ONU to the OLT is an uplink direction, and the uplink direction uses a Time Division Multiple Access (TDMA), and the ONU must transmit an uplink Burst signal according to an uplink Bandwidth timeslot (Bwmap) allocated by the OLT.

In an xPON Network, a unique Identifier is allocated to each ONU by taking a PON port as a unit under control of an OLT, for example, a Logical Link Identifier (LIID) is used as a unique Identifier of an ONU in an Ethernet Passive Optical Network (EPON) system, and an ONU Identifier (ONU Identifier, ID) is used as a unique Identifier of an ONU in a Passive Optical access system (Gigabit-cable PON, GPON). And when the ONU has uplink data to be sent, the xPON local side equipment allocates an authorized time slot for the ONU according to the ONU identification.

In the xPON network, the ONUs transmit data in different uplink time slots allocated by OLT control (based on ONU identities), and each time slot is independent of each other. When some ONUs under a certain PON port of the OLT work abnormally and send data in an authorized time slot not belonging to the OLT, interference is caused to uplink data sending of the ONUs which work by using a normally allocated time slot at the PON port. Normal data cannot be recovered, and uplink packet loss is generated; and may cause the distance measurement to be abnormal, the loop delay drift occurs; resulting in the associated disturbed ONU going offline.

Since the xPON OLT adopts a dynamic bandwidth allocation manner and the ONU identifier is generally dynamically allocated, the ONU-authorized time slot is dynamically changed, so that the influence range of the long-emission ONU is uncertain, and it is very difficult to detect the long-emission ONU.

Disclosure of Invention

The invention aims to provide a detection method and a detection device for a long-luminous optical network unit and an optical line terminal, which are used for solving the problem that the long-luminous ONU is difficult to position due to the dynamic change of an ONU uplink authorization time slot in an xPON system.

In order to achieve the above object, the present invention provides a method for detecting a long-wavelength optical network unit, which is applied to an optical line terminal OLT, and the method includes:

after detecting the fault alarm of an optical network unit ONU, fixedly allocating a time slot for each ONU which is in communication connection with the OLT, and recording the corresponding relation between the ONU identification of each ONU and the allocated time slot of the ONU;

detecting and processing the long luminous signals of the ONU to obtain a time slot range corresponding to the long luminous signals of the ONU;

determining a suspicious fault ONU set according to the corresponding relation between the ONU identification and the ONU allocated time slot and the time slot range corresponding to the ONU long luminous signal;

and detecting the long-luminous ONU in the suspicious fault ONU set.

Wherein, the determining the suspicious fault ONU set according to the corresponding relationship between the ONU identification and the ONU allocated time slot and the time slot range corresponding to the ONU long luminous signal comprises:

in the fixedly allocated time slot, acquiring a long light-emitting signal time slot within the time slot range;

acquiring an ONU identifier corresponding to the long light-emitting signal time slot according to the corresponding relation between the ONU identifier and the ONU allocated time slot;

and determining a suspicious fault ONU set according to the ONU identification corresponding to the long luminous signal time slot.

Before the step of fixedly allocating a time slot to each ONU in communication connection with the OLT after the ONU fault alarm is detected, and recording a correspondence between an ONU identifier of each ONU and the allocated time slot of the ONU, the detection method further includes:

and recording the uplink and downlink information and the ONU error code information of each ONU according to a preset recording period.

Wherein, the detecting of the long-light-emitting ONU in the suspicious faulty ONU set specifically includes:

and detecting the long-luminous ONU in the suspicious fault ONU set according to the up-down line information and the ONU error code information of each ONU in an abnormal recording period and a normal recording period, wherein the abnormal recording period is the recording period of the detected ONU long-luminous signal, and the normal recording period is the recording period of the undetected ONU long-luminous signal.

The method for detecting the long-light-emitting ONU in the suspicious fault ONU set according to the on-line information and the off-line information and the ONU error code information of each ONU in the abnormal recording period and the normal recording period comprises the following steps:

comparing the ONU error code information of the ONU in the normal recording period with the ONU error code information of the ONU in the abnormal recording period, and acquiring a first ONU set of which the difference value of the ONU error code information is smaller than a first preset threshold value from the suspicious fault ONU set;

according to the ONU online and offline information in the normal recording period and the ONU in the abnormal recording period, acquiring a second ONU set which is online in the normal recording period and keeps online in the abnormal recording period and a third ONU set which is offline in the normal recording period and keeps offline in the abnormal recording period from the suspicious fault ONU set;

obtaining suspected long-emitting ONUs according to the first ONU set, the second ONU set and the third ONU set;

and if the number of times that the detected suspected long-luminous ONU is the same ONU in a plurality of times of suspected long-luminous ONU detection is larger than a second preset threshold value, taking the suspected long-luminous ONU as a long-luminous ONU.

Wherein, the obtaining the suspected long-emitting ONU according to the first ONU set, the second ONU set, and the third ONU set includes:

if the first ONU set is empty, using the ONUs in the third ONU set as suspected long-luminous ONUs;

and if the intersection of the first ONU set and the second ONU set is not empty, taking the intersection of the first ONU set and the second ONU set as the suspected long luminous ONU.

After detecting a long-emitting ONU in the set of suspicious faulty ONUs, the detection method further includes:

and reporting the long luminous ONU to a network element management system, so that the network element management system carries out fault processing on the long luminous ONU.

The invention also provides a detection device of the long-luminescence optical network unit, which is applied to the optical line terminal OLT, and the detection device comprises:

the distribution module is used for fixedly distributing a time slot for each ONU in communication connection with the OLT after detecting the fault alarm of an optical network unit ONU, and recording the corresponding relation between the ONU identification of each ONU and the distributed time slot of the ONU;

the acquisition module is used for detecting and processing the long luminous signals of the ONU and acquiring a time slot range corresponding to the long luminous signals of the ONU;

the determining module is used for determining a suspicious fault ONU set according to the corresponding relation between the ONU identification and the ONU allocated time slot and the time slot range corresponding to the ONU long luminous signal;

and the first detection module is used for detecting the long-light-emitting ONU in the suspicious fault ONU set.

Wherein the determining module comprises:

the first obtaining submodule is used for obtaining a long luminous signal time slot within the time slot range in the fixedly allocated time slot;

the second acquisition sub-module is used for acquiring the ONU identification corresponding to the long luminous signal time slot according to the corresponding relation between the ONU identification and the ONU allocated time slot;

and the first determining submodule is used for determining a suspicious fault ONU set according to the ONU identification corresponding to the long luminous signal time slot.

Wherein, the detection device still includes:

and the recording module is used for recording the uplink and downlink information and the ONU error code information of each ONU according to a preset recording period.

The first detection module is specifically configured to detect a long-emitting ONU in the suspected faulty ONU set according to the uplink and downlink information and the ONU error code information of each ONU in an abnormal recording period and a normal recording period, where the abnormal recording period is a recording period in which a long-emitting ONU signal is detected, and the normal recording period is a recording period in which a long-emitting ONU signal is not detected.

Wherein the first detection module comprises:

a third obtaining sub-module, configured to compare the ONU error code information of the ONU in the normal recording period with the ONU error code information of the ONU in the abnormal recording period, and obtain, from the suspected faulty ONU set, a first ONU set in which a difference value of the ONU error code information is smaller than a first preset threshold;

a fourth obtaining sub-module, configured to obtain, from the suspected faulty ONU set, a second ONU set that is on-line in the normal recording period and remains on-line in an abnormal recording period, and a third ONU set that is off-line in the normal recording period and remains off-line in the abnormal recording period, according to the ONU on-line and off-line information in the normal recording period and in the abnormal recording period;

a second determining submodule, configured to obtain a suspected long-emitting ONU according to the first ONU set, the second ONU set, and the third ONU set;

and the third determining sub-module is used for taking the suspected long-light-emitting ONU as the long-light-emitting ONU if the number of times that the detected suspected long-light-emitting ONU is the same ONU is larger than a second preset threshold value in a plurality of times of suspected long-light-emitting ONU detection.

Wherein the second determination submodule includes:

a first determining unit, configured to, if the first ONU set is empty, take an ONU in the third ONU set as a suspected long-emitting ONU;

a second determining unit, configured to, if an intersection of the first ONU set and the second ONU set is not empty, use the intersection of the first ONU set and the second ONU set as a suspected long-emitting ONU.

Wherein, the detection device still includes:

and the sending module is used for reporting the long luminous ONU to a network element management system after the first detection module detects the long luminous ONU in the suspicious fault ONU set, so that the network element management system carries out fault processing on the long luminous ONU.

The invention also provides an optical line terminal which comprises the detection device of the long-time light-emitting optical network unit.

The embodiment of the invention has the following beneficial effects:

after detecting the ONU fault alarm, the method for detecting the long-emitting optical network unit fixedly allocates a time slot for each ONU in communication connection with the OLT, and records the corresponding relation between the ONU identification of each ONU and the allocated time slot of the ONU; detecting and processing the long luminous signals of the ONU to obtain a time slot range corresponding to the long luminous signals of the ONU; and determining a suspicious fault ONU set according to the corresponding relation and the time gap range, and detecting the long-luminous ONU in the suspicious fault ONU set. The embodiment of the invention fixedly allocates the time slot for the ONU, so that the relationship between the ONU identification and the time slot is relatively fixed, the ONU set influenced by the fault can be determined, the detection and the positioning of the long-luminous ONU can be conveniently and quickly realized in the ONU set influenced by the fault, and the problem of difficult positioning of the long-luminous ONU caused by the dynamic change of the ONU uplink authorization time slot in an xPON system is solved.

Drawings

Fig. 1 is a first flowchart of a method for detecting a long-haul optical network unit according to an embodiment of the present invention;

fig. 2 is a second flowchart of a method for detecting a long-haul optical network unit according to an embodiment of the present invention;

fig. 3 is a third flowchart of a method for detecting a long-haul optical network unit according to an embodiment of the present invention;

fig. 4 is a block diagram of a detection apparatus of a long-wavelength optical network unit according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.

The embodiment of the invention provides a detection method and a detection device for a long-luminous optical network unit and an optical line terminal, which are used for solving the problem that a long-luminous ONU is difficult to position due to the dynamic change of an ONU uplink authorization time slot in an xPON system.

The first embodiment:

as shown in fig. 1, a method for detecting a long-wavelength optical network unit according to an embodiment of the present invention includes:

step 11: and after detecting the fault alarm of an Optical Network Unit (ONU), fixedly allocating a time slot for each ONU in communication connection with the OLT, and recording the corresponding relation between the ONU identification of each ONU and the allocated time slot of the ONU.

In the embodiment of the invention, the OLT can carry out fault detection on the ONUs according to a preset detection period, and after the fault alarm of the ONUs is detected, a time slot is fixedly allocated to each ONU connected with the PON port corresponding to the fault alarm ONU. The fault alarm may specifically be an ONU uplink error alarm, round trip delay RTT drift, or other preset alarm information.

Here, each ONU may be allocated a fixed timeslot according to a preset allocation policy, where the preset allocation policy includes, but is not limited to: the bandwidth value corresponding to the time slot allocated to each ONU is larger than the historical average flow record of the ONU, and the total bandwidth amount corresponding to the time slot allocated to the same PON port does not exceed the physical limit of the PON port.

In addition, the correspondence between the ONU identifier and the time slot allocated to the ONU may specifically include: the corresponding relation between LLID and the allocated time slot in the EPON system and the corresponding relation between ONUID and the allocated time slot in the GPON system, and the corresponding relation between the ONU identification and the allocated time slot of the ONU is kept fixed during the detection period of the long light-emitting signal.

Of course, when the ONU fault detection is not needed, the dynamic bandwidth allocation manner adopted by the OLT can be restored.

Step 12: and detecting and processing the long luminous signals of the ONU to acquire a time slot range corresponding to the long luminous signals of the ONU.

After each ONU fixedly allocates a time slot, long light-emitting signal detection is started, and a time slot range related to the ONU long light-emitting signal is acquired according to a reception indication signal (including but not limited to an SD signal of a PON optical module or a long light-emitting detection count) of the PON periodic scanning optical receiver.

Step 13: and determining a suspicious fault ONU set according to the corresponding relation between the ONU identification and the ONU allocated time slot and the time slot range corresponding to the ONU long luminous signal.

Firstly, in a fixedly allocated time slot, acquiring a long luminous signal time slot within the time slot range; then, acquiring an ONU identifier corresponding to the long light-emitting signal time slot according to the corresponding relation between the ONU identifier and the ONU allocated time slot; and finally, determining a suspicious fault ONU set according to the ONU identification corresponding to the long luminous signal time slot.

The suspicious fault ONU set comprises a long-luminous ONU and ONUs influenced by the long-luminous ONU.

Step 14: and detecting the long-luminous ONU in the suspicious fault ONU set.

Specifically, the long-emission ONU can be detected in the suspected defective ONU set based on the ONU uplink and downlink information and ONU error information recorded in advance at a predetermined cycle.

After detecting the ONU fault alarm, the method for detecting the long-emitting optical network unit fixedly allocates a time slot for each ONU in communication connection with the OLT, and records the corresponding relation between the ONU identification of each ONU and the allocated time slot of the ONU; detecting and processing the long luminous signals of the ONU to obtain a time slot range corresponding to the long luminous signals of the ONU; and determining a suspicious fault ONU set according to the corresponding relation and the time gap range, and detecting the long-luminous ONU in the suspicious fault ONU set. The embodiment of the invention fixedly allocates the time slot for the ONU, so that the relationship between the ONU identification and the time slot is relatively fixed, the ONU set influenced by the fault can be determined, the detection and the positioning of the long-luminous ONU can be conveniently and quickly realized in the ONU set influenced by the fault, and the problem of difficult positioning of the long-luminous ONU caused by the dynamic allocation of the ONU uplink authorization time slot in an xPON system is solved.

Second embodiment:

as shown in fig. 2, a method for detecting a long-wavelength optical network unit according to an embodiment of the present invention includes:

step 21: and recording the uplink and downlink information and the ONU error code information of each ONU according to a preset recording period.

In an embodiment of the present invention, the OLT central office device may record the uplink and downlink information of the ONU and the on-line ONU error code information according to a preset recording period and using the PON port as a unit. Preferably, the uplink and downlink information of the ONU and the ONU error code information may be recorded according to the detection result of the long light emission signal. Specifically, when the long light-emitting signal is not detected in the current recording period, the relevant ONU information in the period is counted as the normal period information; and when the long light-emitting signal is detected, the information of the related ONU in the period is taken into the abnormal period information. In addition, in the embodiment of the present invention, the ONU-related information in the normal recording period and the ONU-related information in the abnormal recording period may be formulated and updated according to a preset policy, where the preset policy includes, but is not limited to, updating the ONU-related information in the normal period when the long light-emitting signal is not detected in a plurality of recording periods, for example, replacing the ONU-related information in the previous normal period with the latest ONU-related information in the normal period; and when the long light-emitting signal is detected, updating the ONU-related information in the abnormal period, for example, replacing the ONU-related information in the previous abnormal period with the ONU-related information in the latest abnormal period. By the recording method, all history information which is possibly needed to be used can be recorded by using the minimum system resource, so that the aim of saving the memory space is fulfilled.

Step 22: and after detecting the fault alarm of an Optical Network Unit (ONU), fixedly allocating a time slot for each ONU in communication connection with the OLT, and recording the corresponding relation between the ONU identification of each ONU and the allocated time slot of the ONU.

Step 23: and detecting and processing the long luminous signals of the ONU to acquire a time slot range corresponding to the long luminous signals of the ONU.

Step 24: and determining a suspicious fault ONU set according to the corresponding relation between the ONU identification and the ONU allocated time slot and the time slot range corresponding to the ONU long luminous signal.

Steps 22 to 24 of this embodiment are the same as steps 11 to 13 of the first embodiment, and are not described herein again.

Step 25: and detecting the long-luminous ONU in the suspicious fault ONU set according to the up-down line information and the ONU error code information of each ONU in an abnormal recording period and a normal recording period, wherein the abnormal recording period is the recording period of the detected ONU long-luminous signal, and the normal recording period is the recording period of the undetected ONU long-luminous signal.

Specifically, the ONU error code information of the ONU in the normal recording period is first compared with the ONU error code information of the ONU in the abnormal recording period, and a first ONU set in which the difference value of the ONU error code information is smaller than a first preset threshold is obtained in the suspected faulty ONU set.

Here, if the difference between the ONU error code information of the ONU in the normal recording period and the ONU error code information of the ONU in the abnormal recording period is greater than the first preset threshold, it is determined that the ONU is a non-long-emission ONU.

And then, according to the ONU online and offline information in the normal recording period and the ONU in the abnormal recording period, acquiring a second ONU set which is online in the normal recording period and keeps online in the abnormal recording period and a third ONU set which is offline in the normal recording period and keeps offline in the abnormal recording period from the suspected fault ONU set.

Here, if it is determined from the ONU online/offline information in the abnormal recording period that one ONU in the suspected faulty ONU set is disconnected in the abnormal recording period, it is determined that the ONU is a non-long-emission ONU.

And then, obtaining suspected long-emitting ONUs according to the first ONU set, the second ONU set and the third ONU set.

Specifically, if the first ONU set is empty, the ONUs in the third ONU set are regarded as suspected long-emitting ONUs; and if the intersection of the first ONU set and the second ONU set is not empty, taking the intersection of the first ONU set and the second ONU set as the suspected long luminous ONU.

And finally, if the number of times that the detected suspected long-luminous ONU is the same ONU in a plurality of times of suspected long-luminous ONU detection is larger than a second preset threshold value, taking the suspected long-luminous ONU as a long-luminous ONU.

Further, in the embodiment of the present invention, after the long-emitting ONU is determined, the long-emitting ONU and other ONUs in the suspected faulty ONU set may be reported to the network element management system (or network management and other operation and maintenance platforms) through an alarm or notification message, and carry information in the ONU history registration authentication information table at the PON port, so that the network element management system actively remotely isolates or searches a specific location and performs field processing according to a certain policy and in combination with user account information. The ONU historical registration authentication information table is maintained by the OLT, and the contents of the ONU historical registration authentication information table include, but are not limited to, LLID/ONUID, ONU type, mac address, Serial Number (SN), and logical link identifier (local identity).

In the embodiment of the invention, an OLT maintains an ONU online history information table by taking a PON port as a unit, long luminescence detection is started through RTT drift or ONU uplink error code alarm, the OLT changes an uplink time slot distribution mode to enable a long luminescence fault influence range to be relatively fixed, and the long luminescence ONU is positioned through a relevant strategy, so that the problems that the long luminescence ONU influence range is uncertain and the long luminescence ONU is difficult to position under the conventional xPON dynamic time slot authorization mechanism are solved. In addition, the detection method of the invention adopts a software mode to realize the detection and positioning of the long-luminous ONU on the basis of the existing software and hardware, so that the method is simpler and more flexible, and the cost for solving the problems is lower.

The following describes a specific detection flow of the ONU with reference to fig. 3, where the detection flow includes the following steps:

step 31: and the OLT records the on-line information and the off-line information of each ONU and the ONU error code information according to a preset recording period.

Step 32: if the ONU fault alarm is detected, fixedly allocating a time slot for each ONU connected with the PON port corresponding to the ONU fault alarm, and recording the corresponding relation between the ONU identification of each ONU and the allocated time slot of the ONU.

Step 33: and starting long light-emitting signal detection, and recording the time slot range related to the long light-emitting signal according to the receiving indication signal of the PON periodic scanning optical receiver.

Step 34: and determining a suspicious fault ONU set according to the corresponding relation and the time slot range corresponding to the ONU long luminous signal.

Step 35: and detecting suspected long luminous ONUs in the suspected fault ONU set according to the up-and-down line information and the ONU error code information of each ONU in the abnormal recording period and the normal recording period.

Step 36: judging whether the detection times of the suspected long-luminous ONU reach a preset threshold value or not;

step 37: if the number of times that the suspected long-light-emitting ONU is the same ONU is judged to be larger than a second preset threshold value if the number of times that the suspected long-light-emitting ONU is the same ONU reaches a preset threshold value, the suspected long-light-emitting ONU is taken as the long-light-emitting ONU, and if the number of times that the suspected long-light-emitting ONU is the same ONU does not reach the preset threshold value.

Step 38: and reporting the long-luminous ONU to a network manager or other operation and maintenance platforms through an alarm or notification message.

The third embodiment:

as shown in fig. 4, an embodiment of the present invention further provides a detection apparatus for a long-wavelength optical network unit, which is applied to an optical line terminal OLT, and the detection apparatus includes:

the allocation module 41 is configured to, after detecting an optical network unit ONU fault alarm, fixedly allocate a time slot to each ONU in communication connection with the OLT, and record a correspondence between an ONU identifier of each ONU and the allocated time slot of the ONU;

an obtaining module 42, configured to perform long-emission signal detection processing on the ONU, and obtain a time slot range corresponding to the ONU long-emission signal;

a determining module 43, configured to determine a suspicious failed ONU set according to a correspondence between the ONU identifier and the ONU-assigned timeslot and a timeslot range corresponding to the ONU long emission signal;

a first detection module 44, configured to detect a long-emitting ONU in the set of suspected faulty ONUs.

In the detection apparatus of a long-wavelength optical network unit according to an embodiment of the present invention, the determining module 43 includes:

a first obtaining submodule 431, configured to obtain, in the fixedly allocated time slot, a long light-emitting signal time slot within the time slot range;

a second obtaining sub-module 432, configured to obtain, according to a correspondence between the ONU identifier and the ONU-assigned time slot, an ONU identifier corresponding to the long optical signal time slot;

the first determining submodule 433 is configured to determine a suspicious faulty ONU set according to the ONU identifier corresponding to the long light-emitting signal timeslot.

The detection device of the long-luminescence optical network unit of the embodiment of the invention further comprises:

and the recording module 45 is configured to record the uplink and downlink information and the ONU error code information of each ONU according to a preset recording period.

In the detection apparatus of the long-emission optical network unit according to the embodiment of the present invention, the first detection module 44 is specifically configured to detect a long-emission ONU in the suspected faulty ONU set according to the uplink and downlink information and the ONU error code information of each ONU in an abnormal recording period and a normal recording period, where the abnormal recording period is a recording period in which a long-emission signal of the ONU is detected, and the normal recording period is a recording period in which a long-emission signal of the ONU is not detected.

In the detection apparatus of a long-wavelength optical network unit according to an embodiment of the present invention, the first detection module 44 includes:

a third obtaining sub-module 441, configured to compare the ONU error code information of the ONU in the normal recording period with the ONU error code information of the ONU in the abnormal recording period, and obtain, from the suspected faulty ONU set, a first ONU set in which a difference value of the ONU error code information is smaller than a first preset threshold;

a fourth obtaining sub-module 442, configured to obtain, from the suspected faulty ONU sets, a second ONU set that is on-line in the normal recording period and remains on-line in the abnormal recording period, and a third ONU set that is off-line in the normal recording period and remains off-line in the abnormal recording period, according to the ONU on-line and off-line information in the normal recording period and the abnormal recording period;

a second determining sub-module 443, configured to obtain a suspected long-emitting ONU according to the first ONU set, the second ONU set, and the third ONU set;

and a third determining sub-module 444, configured to, if the number of times that the detected suspected long-emitting ONU is the same ONU is greater than a second preset threshold in multiple suspected long-emitting ONU detections, determine the suspected long-emitting ONU as a long-emitting ONU.

In the detection apparatus of a long-wavelength optical network unit according to an embodiment of the present invention, the second determining sub-module 443 includes:

a first determining unit 4431, configured to, if the first ONU set is empty, regard an ONU in the third ONU set as a suspected long-emitting ONU;

a second determining unit 4432, configured to, if an intersection of the first ONU set and the second ONU set is not empty, use the intersection of the first ONU set and the second ONU set as a suspected long-emitting ONU.

a sending module 46, configured to report the long-light-emitting ONU to a network element management system after the first detection module detects the long-light-emitting ONU in the suspected faulty ONU set, so that the network element management system performs fault processing on the long-light-emitting ONU.

It should be noted that the apparatus is an apparatus corresponding to the above method embodiment, and all the implementations in the above method embodiment are applicable to the embodiment of the apparatus, and the same technical effect can be achieved.

The embodiment of the invention also provides an optical line terminal which comprises the detection device of the long-luminescence optical network unit.

According to the detection method and device for the long-light-emitting optical network unit and the optical line terminal, after the ONU fault alarm is detected, a time slot is fixedly allocated to each ONU which is in communication connection with the OLT, and the corresponding relation between the ONU identification of each ONU and the allocated time slot of the ONU is recorded; detecting and processing the long luminous signals of the ONU to obtain a time slot range corresponding to the long luminous signals of the ONU; and determining a suspicious fault ONU set according to the corresponding relation and the time gap range, and detecting the long-luminous ONU in the suspicious fault ONU set. The embodiment of the invention fixedly allocates the time slot for the ONU, so that the relationship between the ONU identification and the time slot is relatively fixed, the ONU set influenced by the fault can be determined, the detection and the positioning of the long-luminous ONU can be conveniently and quickly realized in the ONU set influenced by the fault, and the problem of difficult positioning of the long-luminous ONU caused by the dynamic change of the ONU uplink authorization time slot in an xPON system is solved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A detection method of a long-time light-emitting optical network unit is applied to an Optical Line Terminal (OLT), and is characterized in that the detection method comprises the following steps:

and detecting the long-luminous ONU in the suspicious fault ONU set.

2. The method according to claim 1, wherein the determining the suspected faulty ONU set according to the correspondence between the ONU identifier and the allocated timeslot of the ONU and the timeslot range corresponding to the ONU long optical signal comprises:

3. The method according to claim 1, wherein before the steps of fixedly allocating a time slot to each ONU in communication connection with the OLT after detecting the ONU fault alarm, and recording the correspondence between the ONU identifier of each ONU and the allocated time slot of the ONU, the method further comprises:

4. The method according to claim 3, wherein the detecting a long-emitting ONU in the suspected defective ONU set specifically comprises:

5. The method of claim 4, wherein the detecting the long-emitting ONUs in the suspected faulty ONU set according to the on-off information and the ONU error information of each ONU in the abnormal recording period and the normal recording period comprises:

6. The method according to claim 5, wherein the obtaining the suspected long-luminescence ONU according to the first ONU set, the second ONU set, and the third ONU set comprises:

7. The method according to claim 1, wherein after detecting a long-emitting ONU in the set of suspected faulty ONUs, the method further comprises:

8. A detection device of a long-time optical network unit is applied to an Optical Line Terminal (OLT), and is characterized by comprising:

9. The apparatus for detecting a long-haul optical network unit according to claim 8, wherein the determining module comprises:

10. The apparatus for detecting a long-wavelength optical network unit according to claim 8, wherein the apparatus further comprises:

11. The apparatus of claim 10, wherein the first detecting module is specifically configured to detect a long-emitting ONU in the suspected faulty ONU set according to the on-off information and the ONU error information of each ONU in an abnormal recording period and a normal recording period, the abnormal recording period is a recording period in which the ONU long-emitting signal is detected, and the normal recording period is a recording period in which the ONU long-emitting signal is not detected.

12. The apparatus for detecting a long-wavelength optical network unit according to claim 11, wherein the first detecting module comprises:

13. The apparatus for detecting a long-wavelength optical network unit according to claim 12, wherein the second determining submodule includes:

14. The apparatus for detecting a long-wavelength optical network unit according to claim 8, wherein the apparatus further comprises:

15. An optical line terminal comprising a detection arrangement for a long optical network unit according to any of claims 8-14.