CN108924674B - Optical network system and monitoring management method thereof - Google Patents

Optical network system and monitoring management method thereof Download PDF

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Publication number
CN108924674B
CN108924674B CN201810672243.8A CN201810672243A CN108924674B CN 108924674 B CN108924674 B CN 108924674B CN 201810672243 A CN201810672243 A CN 201810672243A CN 108924674 B CN108924674 B CN 108924674B
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optical
branch
equipment
time slot
webmaster
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CN108924674A (en
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王玲
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Raisecom Technology Co Ltd
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Raisecom Technology Co Ltd
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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0631—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0823—Errors, e.g. transmission errors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0079—Operation or maintenance 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

Abstract

The invention discloses an optical network system and a monitoring management method thereof, wherein the method comprises the following steps: the optical line terminal, at least one network management light splitting component and at least one optical network unit; the optical line terminal, each network management light splitting component and each optical network unit form a topological structure through connected optical fibers; each optical network unit is connected to the optical line terminal through one network management light splitting component or a plurality of cascaded network management light splitting components; the network management optical splitting component is used for monitoring the use time slot of each connected branch device, and sending an abnormal alarm of the branch where the branch device is located when the use time slot of any branch device is inconsistent with the latest authorized time slot allocated to the branch device. The network management optical splitting component is arranged in the optical network system, so that not only can data forwarding be carried out, but also the network management optical splitting component can monitor the use time slot of the branch equipment connected with the network management optical splitting component, and abnormal alarm is carried out on the branch where the branch equipment is located when the time slot of the branch equipment is abnormal, so that troubleshooting of faults is accelerated.

Description

Optical network system and monitoring management method thereof
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an optical network system and a monitoring management method thereof.
Background
In recent years, Passive Optical Networks (PONs) have been widely used due to their characteristics of low cost and high transmission distance, and a PON system includes an Optical Line Terminal (OLT), an Optical Distribution Network (ODN), and an Optical Network Unit (ONU). The ODN is composed of passive devices such as a light splitter and an optical fiber. Specifically, reference may be made to the schematic structural diagram shown in fig. 1: one OLT may be connected to one or more optical splitters (only 1 shown in fig. 1), each of which may be connected to multiple ONUs.
In the existing PON system, the ODN can not manage the network, if the branch optical fiber has a problem, the branch optical fiber can not be perceived at the OLT side; if a problem occurs in a certain branch, the deviation between the light-emitting time slot and the time slot allocated by the OLT is large, which may cause long light emission, and may cause that all ONUs in the same PON network cannot normally communicate.
Disclosure of Invention
The invention provides an optical network system and a monitoring management method thereof, which are used for monitoring the optical network system and avoiding time slot abnormity.
In a first aspect, the present invention provides an optical network system, including: the optical line terminal, at least one network management light splitting component and at least one optical network unit; the optical line terminal, each webmaster optical splitting component and each optical network unit form a topological structure through connected optical fibers; each optical network unit is connected to the optical line terminal through one network-manageable optical splitting component or a plurality of cascaded network-manageable optical splitting components; the device directly connected with the webmaster optical splitter through the main optical fiber is the main device of the webmaster optical splitter, and the device directly connected with the webmaster optical splitter through the branch optical fiber is the branch device of the webmaster optical splitter;
the network management optical splitting component is used for monitoring the use time slot of each connected branch device, and sending an abnormal alarm of the branch where the branch device is located when the use time slot of any branch device is inconsistent with the latest authorized time slot which is pre-stored and allocated to the branch device.
In a possible implementation manner, in the optical network system provided by the present invention, the webmaster optical splitting component includes: the system comprises an optical splitter, a processor connected with the optical splitter and a memory connected with the processor;
the memory is used for storing the latest authorized time slot which is obtained in advance and allocated to each branch device;
the processor is used for acquiring uplink data according to the prestored latest authorized time slot of each branch device and determining whether the branch device sending the uplink data is consistent with the branch device corresponding to the latest authorized time slot; and when the branch equipment which sends the uplink data is inconsistent with the branch equipment corresponding to the latest authorized time slot, sending an abnormal alarm of the branch where the branch equipment is located.
In a possible implementation manner, in the optical network system provided by the present invention, the webmaster optical splitting component further includes: a light intensity detector connected to the processor;
the light intensity detector is used for detecting the light intensity of each path of optical fiber connected with the webmaster light splitting component;
the memory is also used for storing the standard light intensity of each path of optical fiber connected with the webmaster optical splitting component;
the processor is also used for receiving the light intensity of each path of optical fiber detected by the light intensity detector, comparing the light intensity of each path of optical fiber with the standard light intensity of the corresponding optical fiber stored in advance, and sending an abnormal alarm of the path of optical fiber when the difference between the light intensity of any path of optical fiber and the standard light intensity of the path of optical fiber exceeds a preset value.
In a second aspect, the present invention provides a monitoring management method applied to any optical network system, including:
acquiring uplink data according to the prestored latest authorized time slot of each branch device;
determining whether the branch equipment for sending the uplink data is consistent with the branch equipment corresponding to the latest authorized time slot;
and when the branch equipment which sends the uplink data is inconsistent with the branch equipment corresponding to the latest authorized time slot, sending an abnormal alarm of the branch where the branch equipment is located.
In a possible implementation manner, in the foregoing method provided by the present invention, the method further includes:
detecting the light intensity of each path of connected optical fiber;
comparing the acquired light intensity of each path of optical fiber with the standard light intensity of the corresponding optical fiber stored in advance;
and when the difference between the light intensity of any one path of optical fiber and the standard light intensity of the path of optical fiber exceeds a preset value, an abnormal alarm of the path of optical fiber is sent out.
In a possible implementation manner, in the foregoing method provided by the present invention, the detecting light intensity of each connected optical fiber includes:
periodically detecting the light intensity of each path of connected optical fibers; alternatively, the first and second electrodes may be,
and when receiving downlink data sent by the main equipment, detecting the light intensity of each path of connected optical fiber.
In a possible implementation manner, in the foregoing method provided by the present invention, the method further includes:
sending registration request information to an optical line terminal or to the optical line terminal through a cascaded network-manageable light splitting component, and waiting for registration response information fed back by the optical line terminal; the registration request information comprises the own equipment identification;
when registration response information fed back by the optical line terminal is received, determining whether the device identifier of the target device in the registration response information is consistent with the device identifier of the target device, and when the two device identifiers are consistent, recording a logical link identifier and an initial authorization time slot allocated by the optical line terminal; the registration response information includes a device identification of a target device, a logical link identification allocated for the target device, and an initial grant time slot.
In a possible implementation manner, in the foregoing method provided by the present invention, the method further includes:
when the registration request information sent by the branch equipment is received, recording the equipment identification of the branch equipment, and updating the set field in the registration request information by using the equipment identification of the branch equipment and then forwarding the updated set field; the registration request information comprises a device identifier of the device sending the registration request information and a setting field for recording the device identifier of the forwarding device;
when receiving the registration response information sent by the main device, determining whether the device identifier of the target device in the registration response information is consistent with the device identifier of one connected branch device, and when determining that the two device identifiers are consistent, recording the initial authorization time slot allocated to the target device in the registration response information and the corresponding relationship between the logical link identifier and the device identifier, and then forwarding the initial authorization time slot and the corresponding relationship to the branch device; the registration response information comprises a device identification of the device which sends the registration request information as a target device, a logical link identification which is distributed for the device which sends the registration request information and an initial authorization time slot.
In a possible implementation manner, in the foregoing method provided by the present invention, the method further includes:
when the branch equipment does not receive any downlink data sent by the main equipment after the registration is successful, taking the initial authorization time slot of the branch equipment as the latest authorization time slot of the corresponding branch equipment;
when receiving downlink data sent by a main branch device, obtaining an authorized time slot of a branch device in the downlink data as the latest authorized time slot of the branch device, and then forwarding the authorized time slot to the branch device; the downlink data comprises an authorized time slot allocated to the target equipment by the optical line terminal.
In a possible implementation manner, in the foregoing method provided by the present invention, the method further includes:
when downlink data sent by the main equipment is not received in a set polling period, sending a detection signal to the main equipment in a corresponding authorized time slot, and waiting for a normal state response signal fed back by the main equipment in a set waiting period;
when a normal state response signal fed back by the main equipment is received in the set waiting period, determining that the main equipment is normal; and when the normal state response signal fed back by the main equipment is not received in the set waiting period, determining that the main equipment is abnormal, and sending an abnormal alarm.
In a possible implementation manner, in the foregoing method provided by the present invention, the method further includes:
broadcasting a detection signal to each branch device when uplink data sent by the branch device is not received in a set inspection period, and waiting for normal state response information fed back by each branch device in a set waiting period;
when a normal state response signal fed back by the branch equipment is received in the set waiting period, the branch equipment is determined to be normal; and when the normal state response signal fed back by the branch equipment is not received in the set waiting period, determining that the branch equipment is abnormal, and sending an abnormal alarm.
In a third aspect, the present invention further provides a monitoring management method applied to any optical network system, including:
receiving registration request information sent by a webmaster optical splitting component or an optical network unit, and recording equipment identification of equipment sending the registration request information;
allocating a logic link identifier and an initial authorization time slot for the equipment sending the registration request information, and associating and recording the allocated logic link identifier, the initial authorization time slot and the equipment identifier of the equipment sending the registration request information;
and feeding back registration response information to the device sending the registration request information, wherein the registration response information comprises a device identifier which takes the device sending the registration request information as a target device, a logic link identifier distributed to the target device, an initial authorization time slot and synchronization time.
In a possible implementation manner, in the foregoing method provided by the present invention, the method further includes:
and receiving the monitoring information reported by the webmaster light splitting assemblies, and performing whole-network management.
The invention has the following beneficial effects:
the optical network system and the monitoring management method thereof provided by the invention comprise the following steps: the optical line terminal, at least one network management light splitting component and at least one optical network unit; the optical line terminal, each network management light splitting component and each optical network unit form a topological structure through connected optical fibers; each optical network unit is connected to the optical line terminal through one network management light splitting component or a plurality of cascaded network management light splitting components; the equipment directly connected with the webmaster optical splitter through the main branch optical fiber is the main branch equipment of the webmaster optical splitter, and the equipment directly connected with the webmaster optical splitter through the branch optical fiber is the branch equipment of the webmaster optical splitter; the network management optical splitting component is used for monitoring the use time slot of each connected branch device, and sending an abnormal alarm of the branch where the branch device is located when the use time slot of any branch device is inconsistent with the latest authorized time slot which is pre-stored and allocated to the branch device. The network management optical splitting component is arranged in the optical network system, so that not only can data forwarding be carried out, but also the network management optical splitting component can monitor the use time slot of the branch equipment connected with the network management optical splitting component, and abnormal alarm is carried out on the branch where the branch equipment is located when the time slot of the branch equipment is abnormal, so that troubleshooting of faults is accelerated.
Drawings
Fig. 1 is a schematic structural diagram of an optical network in the prior art;
fig. 2 is a schematic structural diagram of an optical network system according to an embodiment of the present invention;
fig. 3 is a second schematic structural diagram of an optical network system according to an embodiment of the present invention;
fig. 4 is a third schematic structural diagram of an optical network system according to an embodiment of the present invention;
fig. 5 is a flowchart of a monitoring management method of an optical network system according to an embodiment of the present invention;
fig. 6 is a second flowchart of a monitoring management method of an optical network system according to an embodiment of the present invention;
fig. 7 is a schematic communication interaction diagram of an optical network system according to an embodiment of the present invention;
fig. 8 is a third flowchart of a monitoring management method for an optical network system according to an embodiment of the present invention.
Detailed Description
To solve the problems in the prior art, embodiments of the present invention provide an optical network system and a monitoring method thereof, which are used to monitor each branch of the optical network system and avoid time slot abnormality.
As shown in fig. 2, an optical network system provided in an embodiment of the present invention includes: the optical network system comprises an optical line terminal 11, at least one network management light splitting component 12 and at least one optical network unit 13; the optical line terminal 11, each network management optical splitting component 12, and each optical network unit 13 form a topology structure through connected optical fibers. Each optical network unit 13 is connected to the optical line terminal 11 through one network-manageable optical splitting component 12 or a plurality of cascaded network-manageable optical splitting components. The device directly connected to the network-manageable optical splitter component 12 through the main optical fiber may be referred to as a main device of the network-manageable optical splitter, and the device directly connected to the network-manageable optical splitter component 12 through the branch optical fiber may be referred to as a branch device of the network-manageable optical splitter component. For the optical line terminal 11, the optical line terminal 11 may connect to a plurality of networkable optical splitter modules, and each networkable optical splitter module directly connected to the optical line terminal belongs to a branch device of the optical line terminal 11; for the optical network unit 13, the optical network unit 13 is connected to the optical line terminal through the networkable optical splitter component, so the optical network unit 13 generally has no branch configuration, and its main device is the networkable optical splitter component directly connected thereto.
In the embodiment of the present invention, each optical line terminal 11 may be connected to a plurality of optical network units 13 through an optical distribution network, the optical distribution network may include one or more stages of network-manageable optical splitter modules, and the last stage of network-manageable optical splitter module may be connected to a plurality of optical network units. The webmaster optical splitter 12 may forward data sent by the main branch device to each branch device, may also upload data of the branch device to the main branch device, and may also monitor the use time slot of each connected branch device, and send an abnormal alarm of the branch where the branch device is located when the use time slot of any branch device is inconsistent with the latest authorized time slot pre-stored and allocated to the branch device.
Specifically, as shown in fig. 3, the webmaster optical splitter module 12 includes: a splitter 121, a processor 122 connected to the splitter 121, and a memory 123 connected to the processor 122. The memory 123 is configured to store a latest authorized time slot allocated to each branch device, where the latest authorized time slot is obtained in advance; the processor 122 is configured to acquire uplink data according to the latest authorized time slot of each prestored branch device, and determine whether the branch device that sends the uplink data is consistent with the branch device corresponding to the latest authorized time slot; and when the branch equipment for sending the uplink data is inconsistent with the branch equipment corresponding to the latest authorized time slot, sending an abnormal alarm of the branch where the branch equipment is located. Here, one point is explained: as known to those skilled in the art, each branch device includes a device identifier of the branch device in the uplink data, so that the data sending end can be determined when the uplink data is obtained.
In the embodiment of the present invention, the optical splitter 12 may be any optical splitter used in a PON system in the prior art, and the splitting ratio of the optical splitter is not particularly limited, and may be 1:2, 1:8, 1: 64, etc. Each optical network unit 13 is connected to the optical line terminal 11 through an optical splitter or a plurality of cascaded optical splitters; the optical line terminal 11 and the optical splitter 121, the two cascaded optical splitters 121, and the optical splitter 121 and the optical network unit 13 are connected by optical fibers. In practical application, each optical splitter 121 is correspondingly connected to one processor 122, the optical splitter 121 and the processor 122 constitute a core element of the network-manageable optical splitter, and when the processor 121 can collect uplink data according to the latest authorized time slot of each branch device of the network-manageable optical splitter stored in advance, if the branch device sending the uplink data is found to be inconsistent with the branch device corresponding to the latest authorized time slot, it is indicated that the branch device corresponding to the latest authorized time slot does not send data according to the authorized time slot allocated to the branch device, that is, the used time slot does not coincide with the authorized time slot, at this time, an abnormal alarm can be given to the branch where the branch device is located, so as to quickly troubleshoot the faulty branch, and the whole optical network does not need to be troubleshot any more, thereby effectively improving the efficiency of troubleshooting.
Further, as shown in fig. 4, in the optical network system provided in the embodiment of the present invention, the webmaster optical splitting component 12 may further include: an optical intensity detector 124 connected to each processor 122; the light intensity detector 124 is used for detecting the light intensity of each path of optical fiber connected with the webmaster light splitting assembly 12; the memory 123 is further configured to store standard light intensities of the optical fibers connected to the webmaster optical splitter 12; the processor 122 is further configured to receive the light intensity of each optical fiber detected by the light intensity detector, compare the light intensity of each optical fiber with the standard light intensity of the corresponding optical fiber stored in advance, and send an abnormal alarm of the optical fiber when a difference between the light intensity of any optical fiber and the standard light intensity of the optical fiber exceeds a preset value.
In practical application, the light intensity of the main optical fiber and each branch optical fiber can be collected by a light intensity detector realized by any measuring mode in the prior art, such as a light intensity meter; the processor 122 may collect the light intensity of the main fiber and each branch fiber according to a set period. For example, the processor 122 sends instructions for detecting the light intensity of each optical fiber to the light intensity detector 124 according to a set period, and the light intensity detector 124 returns the detected light intensity to the processor 122 for analysis and processing by the processor 122. Comparing the light intensity of each path of optical fiber with the standard light intensity of each path of optical fiber stored in advance, and when the difference between the light intensity of any path of optical fiber and the standard light intensity is large, performing abnormal alarm on the path of optical fiber, wherein the deviation range between the actual light intensity and the standard light intensity of the optical fiber can be set according to actual needs, and specific values of the actual light intensity and the standard light intensity are not limited; or in other embodiments, other conditions may be employed as triggers for detecting light intensity and returning the result to the processor.
It should be noted that the memory 123 included in the webmaster optical splitter component 12 may be located inside the processor 122, or may be connected to the outside of the processor 122 through a dedicated interface. The standard light intensity of each optical fiber of the webmaster light splitting assembly and the latest authorized time slot corresponding to each branch device are obtained and stored in advance, and when the processor 122 collects uplink data or the light intensity of the optical fibers, the data can be directly extracted for comparison, so that the monitoring management efficiency is improved.
On the other hand, the embodiment of the present invention provides a monitoring management method for an optical network system for a manageable optical splitting component in the optical network system based on the optical network system, as shown in fig. 5, where the method may include the following steps:
s501, acquiring uplink data according to the prestored latest authorized time slot of each branch device;
s502, determining whether the branch equipment for sending the uplink data is consistent with the branch equipment corresponding to the latest authorized time slot;
s503, when the branch device sending the uplink data does not match the branch device corresponding to the latest authorized timeslot, an abnormal alarm is issued for the branch where the branch device is located.
In the monitoring and management method of the optical network system provided in the embodiment of the present invention, the network-administrable optical splitting component may manage device information of each branch device connected thereto, and may also monitor a use time slot of each branch device, and may perform an abnormal alarm on a branch where the branch device is located when the use time slot of any branch device is inconsistent with a latest authorized time slot allocated to the branch device.
In the optical network system provided in the embodiment of the present invention, the network management optical splitting component may further include a light intensity detector, so that the network management optical splitting component may further monitor and manage light intensities of the optical fibers connected thereto, and specifically may include the following steps as shown in fig. 6:
s601, detecting the light intensity of each path of connected optical fiber;
s602, comparing the acquired light intensity of each path of optical fiber with the standard light intensity of the corresponding optical fiber stored in advance;
s603, when the difference between the light intensity of any path of optical fiber and the standard light intensity of the path of optical fiber exceeds a preset value, an abnormal alarm of the path of optical fiber is sent out.
The optical network system is provided with a light intensity detector connected with the processor, and can detect the light intensity of each path of optical fiber in the optical network system, so that the optical network system can alarm the abnormality of the path of optical fiber when the light intensity of the optical fiber is different from the standard light intensity. In practical applications, the standard light intensity and the difference range between the standard light intensity and the standard light intensity can be set according to practical requirements, and are not specifically limited herein.
Further, in step S601, the light intensity of each connected optical fiber is detected by using the following two methods:
periodically detecting the light intensity of each path of connected optical fibers; or, when receiving the downlink data sent by the main device, detecting the light intensity of each connected optical fiber.
In practical application, the light intensity of the main optical fiber and each branch optical fiber of the webmaster optical splitting assembly can be collected by any measuring mode in the prior art, such as a light intensity meter; the processor in the webmaster light splitting assembly can control the light intensity of the main optical fiber and each branch optical fiber acquired by the light intensity detector according to a set period, and the resources of the system can be saved by adopting a periodic detection mode. In another practical way, the corresponding light intensity collection and analysis operations can also be performed each time the downlink data sent by the main support device is received, but this requires a high hardware processing requirement of the processor. Therefore, the suitable detection standard can be selected according to the hardware level and the actual requirement, and is not limited herein.
In practical application, each optical network management splitting component and each optical network unit need to register with the optical line terminal before performing data communication with the optical line terminal. And as for the webmaster optical splitting component and the optical network unit, sending registration request information to the optical line terminal, and waiting for registration response information returned by the optical line terminal to complete the registration.
Specifically, the webmaster optical splitting component can directly send registration request information to the optical line terminal or send registration request information to the optical line terminal through the cascaded webmaster optical splitting components, and waits for registration response information fed back by the optical line terminal; the registration request information includes its own device identification.
If the network-manageable light splitting component is directly connected with the optical line terminal, the network-manageable light splitting component can directly send registration request information to the optical line terminal; if the network-manageable light splitting component is not the network-manageable light splitting component directly connected with the optical line terminal, the network-manageable light splitting needs to send registration request information to the optical line terminal through the cascaded higher-level network-manageable light splitting component. In general, the registration request information should include a device identifier of the network-manageable optical splitting component that sends the registration request information, so as to notify the optical line terminal which network-manageable optical splitting component initiates the registration request to the optical line terminal. On the other hand, in the optical network system provided in the embodiment of the present invention, the optical network unit is connected to the optical line terminal through the network-manageable optical splitting component, and the optical network unit can send the registration request information to the network-manageable optical splitting component connected thereto, and forward the registration request information to the optical line terminal through the network-manageable optical splitting component.
Correspondingly, after receiving the registration request information sent by the webmaster optical splitting component or the optical network unit, the optical line terminal allocates a logical link identifier and an initial authorization time slot for the device sending the registration request information, and feeds back the information in the form of registration response information as the device sending the registration request. The registration response information includes the device identification of the target device, the logical link identification allocated to the target device and the initial authorized time slot. For the webmaster optical splitting component, when the webmaster optical splitting component receives the registration response information fed back by the optical line terminal, whether the device identifier of the target device in the registration response information is consistent with the device identifier of the target device can be determined, and when the two device identifiers are consistent, the logical link identifier and the initial authorization time slot allocated by the optical line terminal are recorded, so that the registration process of the webmaster optical splitting component at the optical line terminal is completed. For the optical network unit, when receiving registration response information fed back by the optical line terminal forwarded by the upper-stage network-manageable light splitting component, judging whether the device identifier of the optical network unit is consistent with the device identifier of the target device in the registration response information, and when the device identifier of the optical network unit is consistent with the device identifier of the target device in the registration response information, determining that the registration response information is the registration response information fed back by the optical line terminal, recording a logical link identifier and an initial authorization time slot allocated by the optical line terminal, and completing the registration process of the optical network unit.
Further, the optical splitting component capable of managing network provided by the embodiment of the present invention can also monitor and manage related information of the branch device, and extract and manage the related information in the process of registering the branch device.
When receiving registration request information sent by the branch equipment, the webmaster light splitting component records equipment identification of the branch equipment, updates a set field in the registration request information by using the equipment identification of the webmaster light splitting component and forwards the updated set field; the registration request information includes a device identifier of the device that sent the registration request information and a setting field for recording the device identifier of the forwarding device, and an initial value of the setting field may be null or invalid for the branch device that initiated the registration request message.
When the webmaster light splitting component receives registration response information sent by the main branch device, whether the device identifier of the target device in the registration response information is consistent with the device identifier of one connected branch device is determined, and when the two device identifiers are consistent, the initial authorization time slot allocated to the target device in the registration response information and the corresponding relation between the logical link identifier and the device identifier are recorded and then forwarded to the branch device; the registration response information comprises a device identification of the device which sends the registration request information as a target device, a logical link identification which is distributed for the device which sends the registration request information and an initial authorization time slot.
In the optical network system provided in the embodiment of the present invention, when the network-administrable optical splitter component forwards the registration request information of the branch device, the device identifier of the branch device may be extracted from the registration request information, so as to locally record the device identifier of the branch device, so as to monitor and manage the branch device. In practical application, the webmaster optical splitting component can judge that the received message is the registration request information through a specific field in the registration request information, the registration request information and the registration response information can borrow the message registration format of the ONU in the PON system, and the registration request information is realized to carry the branch device identifier by using the reserved field. The selection of the device identifier may also be determined according to an actual application scenario, for example, when the ONU in the system uses a format packet of the EPON system, a hardware identifier MAC (media access control) or a logical link identifier loid may be selected; when the ONU in the system uses the format packet of the GPON system, a hardware identifier SN (serial number) or a logical link identifier loid, etc. may be selected. In addition, other manners may also be adopted as long as unique identifiers can be made for the ONU and the optical splitter, which is not limited herein. The registration request information comprises a device identifier of a device sending the registration request information, and also comprises a setting field used for updating the device identifier of the forwarding device, the field is internally updated and recorded with the device identifier of the forwarding device forwarding the registration request information each time, the setting field can be convenient for the upper-level device to manage the device information of the branch device, and when the upper-level device receives the registration request information, the device identifier of the branch device can be obtained as long as the device identifier in the setting field is extracted; when the upper-level device needs to continuously forward the registration request information upwards, the device identification of the upper-level device is used for updating the set field and then forwarding upwards so that the upper-level device of the upper-level device can know the device identification of the branch device; it should be noted that, if the webmaster optical splitter is the terminal initiating the registration request, the field information is set to be null or invalid in the registration request information.
On the other hand, the optical line terminal issues registration response information for the device requesting registration in a broadcast manner, and the registration response information includes a device identifier using the device requesting registration as a target device, a logical link identifier allocated to the target device, and an initial authorization time slot; besides, the synchronization time and other information required by the optical line terminal can be included. When forwarding the registration response information fed back by the optical line terminal for requesting the registration device, the network-managed light splitting component may first determine whether the device identifier of the target device in the registration response information is consistent with the device identifier of the branch device thereof, and if the two device identifiers are consistent, it indicates that the registration response information is the registration response information for the branch device thereof, and at this time, the network-managed light splitting component may extract the logical link identifier and the initial authorization time slot allocated to the branch device thereof from the registration response information, so as to obtain the correspondence between the device identifier and the logical link identifier of the branch device, and the initial authorization time slot of the branch device, and may monitor and manage the device information and the use time slot of the branch device.
Specifically, except for the networkable optical splitter directly connected to the olt, other networkable optical splitters or onu all need to forward data to the olt through the upper-level networkable optical splitter, so as to serve as the networkable optical splitter with the branch device, as shown in fig. 7, when receiving the registration request information sent by the branch device (such as the onu shown in fig. 5), the device identifier of the branch device is extracted from the registration request information and stored, so as to record the branch device as the managed branch device of the next level, and update the device identifier of the branch device to the set field in the registration request information, and forward the updated registration request information to the upper level. After receiving the registration request information of the device requesting registration, the olt allocates a logical link identifier as a unique identifier for the device to perform communication, allocates an initial authorized timeslot for the device to use during communication, locally records the information, feeds the information back to the device requesting registration, and broadcasts registration response information to the lower-level device. All the next-stage webmaster optical splitting assemblies of the optical line terminal can receive the registration response information, extract whether the device identifier of the target device in the registration response information is consistent with the recorded device identifier of the branch device, if so, the device requesting registration is the branch device of the optical splitter, at this time, the logic link identifier and the initial authorization time slot allocated to the branch device are recorded, the corresponding relation between the device identifier of the branch device and the logic link identifier is established, the initial authorization time slot is used as a standard backup for judging whether the branch device works as a normal time slot, and then the registration response information is continuously sent to the target device. Before the authorized time slot is not updated, the original authorized time slot is used as the latest authorized time slot no matter the network management light splitting component or the optical network unit.
Therefore, the registration process is used for realizing the process of acquiring and recording the equipment information of the branch equipment by each level of the network management light splitting component, and simultaneously establishing the basis for communication among the optical network terminal, each network management light splitting component and each optical network unit, and the repeated registration is not needed in the subsequent communication process if the first registration is successful.
In the foregoing method provided in the embodiment of the present invention, the latest authorized timeslot of the processor for the branch device may be obtained in the following manner:
(1) and when the branch equipment of the webmaster optical splitting component does not receive any downlink data sent by the main equipment after the registration is successful, taking the initial authorization time slot of the branch equipment as the latest authorization time slot of the corresponding branch equipment.
As described above, after the optical network management optical splitting assemblies and the optical network units complete registration, when the optical line terminal has not issued any downlink data, the optical network management optical splitting assemblies and the optical network units adopt the initial authorization time slots allocated to the optical network management optical splitting assemblies and the optical network units as the latest authorization time slots to perform data communication. For example, the networkable optical splitter module connected to the onu may collect the uplink data according to the latest authorized timeslot of the locally stored branch device.
(2) When the webmaster optical splitting component receives downlink data sent by the main branch device, the authorization time slot of the branch device is obtained in the downlink data and is used as the latest authorization time slot of the branch device, and then the downlink data is forwarded to the branch device; the downlink data comprises an authorized time slot allocated by the optical line terminal for the target equipment.
In practical application, because the downlink data sent by the optical line terminal to the devices connected to the optical line terminal is all sent in a broadcast manner, when the optical network system is in a normal working state, the webmaster optical splitting component directly connected to the optical line terminal can receive the downlink data, and at this time, the upper-stage webmaster optical splitting component of the target device needs to extract the authorization time slot allocated to the branch device from the downlink data and use the authorization time slot as the latest authorization time slot of the corresponding branch device. If the target device in the downlink data is not a branch device of the network-manageable optical splitter component, the network-manageable optical splitter component forwards the downlink data to the branch device at the next stage, and then all devices connected with the optical fiber of the network-manageable optical splitter component forward the downlink data. The optical line terminal in the optical network system can adjust the authorized time slot for the optical network unit at any time according to the current network condition during communication so as to adapt to the communication requirements of each device, and the authorized time slot can be carried and sent in downlink data.
The latest authorized time slot of the branch device can be determined by sampling the downlink data sent by the optical line terminal through the webmaster light splitting component to obtain the information carried therein. For example, the mac timeslot assignment can be obtained according to the MPCPGATE frame in the downlink data message when the format message of the EPON system is used in the system, which is carried by a specific field; or when the system uses the format message of the GPON system, the alloc-ID time slot allocation can be obtained according to the Bwmap field of the PCBd frame in the downlink data message.
If a certain network management optical splitting component on a path from the optical line terminal to the optical network unit fails, the failed network management optical splitting component cannot transmit data, so that the light intensities of the main optical fiber and the branch optical fiber of the network management optical splitting component cannot be monitored, and the failed network management optical splitting component can be determined in the following two ways:
when the webmaster optical splitting component or the optical network unit serving as the next-stage branch equipment does not receive downlink data sent by the main equipment within a set inspection period, the webmaster optical splitting component or the optical network unit sends a detection signal to the webmaster optical splitting component serving as the main equipment at a corresponding authorized time slot, and waits for a normal state response signal fed back by the main equipment within a set waiting period;
if the webmaster optical splitting component or the optical network unit serving as the next-stage branch equipment receives a normal state response signal fed back by the main equipment within a set waiting period, determining that the main equipment is normal; and if the normal state response signal fed back by the main equipment is not received within the set waiting period, determining that the main equipment is abnormal, and sending an abnormal alarm.
When the webmaster optical splitting component serving as the main equipment receives the detection signal, if the webmaster optical splitting component is in a normal state, and only if no data needs to be broadcasted and issued in the current routing inspection period, a normal state response signal is sent to the next-stage equipment (the webmaster optical splitting component or the optical network unit), so that the condition that the webmaster optical splitting component is normal is indicated; if the upper-level main equipment is in fault, the upper-level main equipment cannot receive the detection signal and cannot send a normal-state response signal to the lower-level equipment, and the lower-level equipment does not receive the feedback signal after the waiting period, the main equipment can be determined to be in fault, and an abnormal alarm is sent. The branching device can be used to determine whether the splitter is abnormal.
In another implementable manner, when the webmaster optical splitter or the optical line terminal serving as the upper-level main equipment does not receive uplink data sent by the branch equipment within a set inspection period, broadcasting a detection signal to each branch equipment, and waiting for normal-state response information fed back by each branch equipment within a set waiting period;
if the webmaster optical splitting component or the optical line terminal serving as the upper-level main equipment receives a normal state response signal fed back by the branch equipment within a set waiting period, determining that the branch equipment is normal; if the normal state response signal fed back by the branch equipment is not received in the set waiting period, the branch equipment is determined to be abnormal, and an abnormal alarm is sent out.
When receiving the detection signal sent by the main branch equipment, the webmaster optical splitting component serving as the next-stage branch equipment sends a normal-state response signal to the main branch equipment in the authorized time slot if the optical splitting component is in a normal state and only if no data needs to be reported in the current routing inspection period, so that the main branch equipment is normal; and if the optical splitter fails, the optical splitter cannot receive the detection signal and cannot send a normal response signal to the upper-level main branch device, and at the moment, the main branch device can determine that the lower-level optical splitter fails after a waiting period. The main device can be used for judging whether the optical splitter is abnormal or not.
For the two modes, when the next-level branch equipment judges that the superior main equipment has faults, the number of the related equipment is small, and the system resources occupy less; when the primary master device at the upper level judges that the lower-level device has a fault, the alarm result can be further sent to the optical line terminal as uplink data, which is more beneficial to the whole network management. In practical application, the material can be selected and used according to requirements.
It should be noted that, because the branch device connected to the branch optical fiber of the networkable optical splitter component is unique, the branch optical fiber may share the identification information with the branch device connected thereto, and for a main optical fiber of a certain networkable optical splitter component, the branch optical fiber may share the identification information with the branch device connected thereto, and for a branch optical fiber, the branch optical fiber may share the identification information with the branch device connected thereto. In addition, the monitoring information of each webmaster optical splitting component on the branch equipment can be reported to the optical line terminal as local data in the corresponding authorized time slot, and the optical line terminal performs unified management.
The monitoring management method of the optical network system provided by the embodiment of the present invention is described above with reference to the side of the optical network management-capable optical splitting component, and since the optical network system provided by the embodiment of the present invention is provided with the optical splitting component capable of network management, the management of the optical splitting component capable of network management and the optical network unit at the side of the optical line terminal is correspondingly improved.
As shown in fig. 8, the monitoring management method for an optical network system according to an embodiment of the present invention may include the following steps:
s801, receiving registration request information sent by a webmaster optical splitting component or an optical network unit, and recording a device identifier of a device sending the registration request information;
s802, distributing a logic link identifier and an initial authorization time slot for the equipment sending the registration request information, and associating and recording the distributed logic link identifier, the initial authorization time slot and the equipment identifier of the equipment sending the registration request information;
and S803, feeding back registration response information to the device sending the registration request information, wherein the registration response information comprises a device identifier which takes the device sending the registration request information as a target device, a logical connection identifier distributed to the target device, an initial authorization time slot and synchronization time.
In the embodiment of the present invention, since the webmaster optical splitter includes the processor and can manage the lower-level devices, as with the optical network unit, the optical network unit can register on the optical line terminal to obtain the authorized time slot for data communication. When receiving a registration request sent by a webmaster optical splitting component or an optical network unit, an optical line terminal firstly records a device identifier of a device requesting registration, and then allocates a logical link identifier and an initial authorization time slot for the device requesting registration. After the relevant information is allocated, the olt may send registration response information to the device requesting registration, where the registration response information may include a device identifier of a target device that is the device sending the registration request information (i.e., the device requesting registration), a logical link identifier allocated to the target device, an initial grant slot, and synchronization time.
After the optical line terminal establishes communication connection with the webmaster optical splitting component and the optical network unit, data transmission can be performed, the optical line terminal can send downlink data to any webmaster optical splitting component or any optical network unit which completes registration, the downlink data is sent in a broadcast mode, the optical line terminal can adjust the authorization time slot of any equipment when sending the downlink data according to the current network situation, the authorization time slot can be included in the downlink data, and after the target equipment in the downlink data receives the downlink data, the latest distributed authorization time slot is used as the normal communication use time slot to send the uplink data to the optical line terminal.
Because the optical network system provided by the embodiment of the invention can monitor the branch equipment, the optical line terminal can also receive the monitoring information reported by each optical network management component so as to carry out the whole network management.
The optical network system and the monitoring management method thereof provided by the invention comprise the following steps: the optical line terminal, at least one network management light splitting component and at least one optical network unit; the optical line terminal, each network management light splitting component and each optical network unit form a topological structure through connected optical fibers; each optical network unit is connected to the optical line terminal through one network management light splitting component or a plurality of cascaded network management light splitting components; the equipment directly connected with the webmaster optical splitter through the main branch optical fiber is the main branch equipment of the webmaster optical splitter, and the equipment directly connected with the webmaster optical splitter through the branch optical fiber is the branch equipment of the webmaster optical splitter; the network management optical splitting component is used for monitoring the use time slot of each connected branch device, and sending an abnormal alarm of the branch where the branch device is located when the use time slot of any branch device is inconsistent with the latest authorized time slot which is pre-stored and allocated to the branch device. The network management optical splitting component is arranged in the optical network system, so that not only can data forwarding be carried out, but also the network management optical splitting component can monitor the use time slot of the branch equipment connected with the network management optical splitting component, and abnormal alarm is carried out on the branch where the branch equipment is located when the time slot of the branch equipment is abnormal, so that troubleshooting of faults is accelerated.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (13)

1. An optical network system, comprising: the optical line terminal, at least one network management light splitting component and at least one optical network unit; the optical line terminal, each webmaster optical splitting component and each optical network unit form a topological structure through connected optical fibers; each optical network unit is connected to the optical line terminal through one network-manageable optical splitting component or a plurality of cascaded network-manageable optical splitting components; the device directly connected with the webmaster optical splitter through the main optical fiber is the main device of the webmaster optical splitter, and the device directly connected with the webmaster optical splitter through the branch optical fiber is the branch device of the webmaster optical splitter;
the network management optical splitting component is used for monitoring the use time slot of each connected branch device, and sending an abnormal alarm of the branch where the branch device is located when the use time slot of any branch device is inconsistent with the latest authorized time slot which is pre-stored and allocated to the branch device.
2. The optical network system of claim 1 wherein the networkable optical splitting component comprises: the system comprises an optical splitter, a processor connected with the optical splitter and a memory connected with the processor;
the memory is used for storing the latest authorized time slot which is obtained in advance and allocated to each branch device;
the processor is used for acquiring uplink data according to the prestored latest authorized time slot of each branch device and determining whether the branch device sending the uplink data is consistent with the branch device corresponding to the latest authorized time slot; and when the branch equipment which sends the uplink data is inconsistent with the branch equipment corresponding to the latest authorized time slot, sending an abnormal alarm of the branch where the branch equipment is located.
3. The optical network system of claim 2 wherein the networkable optical splitting component further comprises: a light intensity detector connected to the processor;
the light intensity detector is used for detecting the light intensity of each path of optical fiber connected with the webmaster light splitting component;
the memory is also used for storing the standard light intensity of each path of optical fiber connected with the webmaster optical splitting component;
the processor is also used for receiving the light intensity of each path of optical fiber detected by the light intensity detector, comparing the light intensity of each path of optical fiber with the standard light intensity of the corresponding optical fiber stored in advance, and sending an abnormal alarm of the path of optical fiber when the difference between the light intensity of any path of optical fiber and the standard light intensity of the path of optical fiber exceeds a preset value.
4. A monitoring management method applied to the optical network system according to any one of claims 1 to 3, comprising:
the webmaster light splitting component collects uplink data according to the latest authorized time slot of each pre-stored branch device;
the webmaster optical splitting component determines whether the branch equipment for sending the uplink data is consistent with the branch equipment corresponding to the latest authorized time slot;
and when the branch equipment for sending the uplink data is inconsistent with the branch equipment corresponding to the latest authorized time slot, the webmaster optical splitting component sends an abnormal alarm of the branch where the branch equipment is located.
5. The method of claim 4, wherein the method further comprises:
the webmaster light splitting component detects the light intensity of each path of connected optical fibers;
the webmaster light splitting component compares the acquired light intensity of each path of optical fiber with the standard light intensity of the corresponding optical fiber stored in advance;
when the difference between the light intensity of any optical fiber and the standard light intensity of the optical fiber exceeds a preset value, the network management light splitting component sends an abnormal alarm of the optical fiber.
6. The method of claim 5, wherein said detecting the light intensity of each of the connected optical fibers comprises:
the webmaster light splitting component periodically detects the light intensity of each path of connected optical fibers; alternatively, the first and second electrodes may be,
when receiving downlink data sent by the main equipment, the webmaster light splitting component detects the light intensity of each path of connected optical fiber.
7. The method of claim 4, wherein the method further comprises:
the webmaster light splitting component sends registration request information to an optical line terminal or the optical line terminal through the cascaded webmaster light splitting components, and waits for registration response information fed back by the optical line terminal; the registration request information comprises the own equipment identification;
when receiving registration response information fed back by the optical line terminal, the webmaster optical splitting component determines whether the device identifier of the target device in the registration response information is consistent with the device identifier of the target device, and when determining that the two device identifiers are consistent, records a logical link identifier and an initial authorization time slot allocated by the optical line terminal; the registration response information comprises a device identification of the target device, a logical link identification allocated to the target device and an initial authorization time slot.
8. The method of claim 7, wherein the method further comprises:
when receiving the registration request information sent by the branch equipment, the webmaster optical splitting component records the equipment identification of the branch equipment, updates the set field in the registration request information by using the equipment identification of the branch equipment and forwards the updated set field; the registration request information comprises a device identifier of the device sending the registration request information and a setting field for recording the device identifier of the forwarding device;
when receiving the registration response information sent by the main device, the webmaster light splitting component determines whether the device identifier of the target device in the registration response information is consistent with the device identifier of one connected branch device, and when determining that the two device identifiers are consistent, records the initial authorization time slot allocated to the target device in the registration response information and the corresponding relationship between the logical link identifier and the device identifier, and forwards the initial authorization time slot and the corresponding relationship to the device identifier to the branch device; the registration response information comprises a device identification of the device which sends the registration request information as a target device, a logical link identification which is distributed for the device which sends the registration request information and an initial authorization time slot.
9. The method of claim 8, wherein the most recent granted time slot for the branch device is obtained by:
when the branch equipment does not receive any downlink data sent by the main equipment after the registration is successful, the webmaster light splitting component takes the initial authorization time slot of the branch equipment as the latest authorization time slot of the corresponding branch equipment;
when receiving downlink data sent by main branch equipment, a webmaster light splitting component acquires an authorized time slot of branch equipment in the downlink data as the latest authorized time slot of the branch equipment and then forwards the authorized time slot to the branch equipment; the downlink data comprises an authorized time slot allocated to the target equipment by the optical line terminal.
10. The method of any one of claims 4-9, further comprising:
when the webmaster optical splitting component or the optical network unit does not receive downlink data sent by the main equipment within a set polling period, sending a detection signal to the main equipment at a corresponding authorized time slot, and waiting for a normal state response signal fed back by the main equipment within a set waiting period;
when the webmaster optical splitting component or the optical network unit receives a normal state response signal fed back by the main equipment within the set waiting period, determining that the main equipment is normal; and when the normal state response signal fed back by the main equipment is not received in the set waiting period, determining that the main equipment is abnormal, and sending an abnormal alarm.
11. The method of any one of claims 4-9, further comprising:
when the webmaster optical splitting component or the optical line terminal does not receive uplink data sent by the branch equipment within a set inspection period, broadcasting detection signals to the branch equipment, and waiting for normal state response information fed back by the branch equipment within a set waiting period;
when the webmaster optical splitting component or the optical line terminal receives a normal state response signal fed back by the branch equipment in the set waiting period, determining that the branch equipment is normal; and when the normal state response signal fed back by the branch equipment is not received in the set waiting period, determining that the branch equipment is abnormal, and sending an abnormal alarm.
12. A monitoring management method applied to the optical network system according to any one of claims 1 to 3, comprising:
the optical line terminal receives registration request information sent by a webmaster light splitting component or an optical network unit, and records a device identifier of a device sending the registration request information;
the optical line terminal allocates a logic link identifier and an initial authorization time slot for the equipment sending the registration request information, and associates and records the allocated logic link identifier, the initial authorization time slot and the equipment identifier of the equipment sending the registration request information;
and the optical line terminal feeds back registration response information to the equipment sending the registration request information, wherein the registration response information comprises an equipment identifier which takes the equipment sending the registration request information as target equipment, a logic link identifier distributed for the target equipment, an initial authorization time slot and synchronization time.
13. The method of claim 12, wherein the method further comprises:
and the optical line terminal receives the monitoring information reported by each webmaster light splitting component and performs the whole network management.
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