Wavelength characteristic detection method and device, communication equipment and readable storage medium

Abstract

The invention relates to a wavelength characteristic detection method and device, communication equipment and a computer readable storage medium. Comprising the following steps: in a current detection period, allocating uplink time slot resources for an optical network unit connected with a target port, and receiving uplink signals through each wavelength channel of the target port; the target port comprises a first wavelength channel and a second wavelength channel; the optical network unit under the first wavelength channel is in a working state, and the second wavelength channel is an expanded and upgraded wavelength channel; if the first uplink signal of the second wavelength channel is detected, determining a second uplink signal consistent with the receiving moment of the first uplink signal in the first wavelength channel; determining uplink time slot information corresponding to the second uplink signal; and determining the optical network unit corresponding to the uplink time slot information as an abnormal target terminal. According to the invention, the function of detecting whether the emission wavelength of the optical network unit conflicts with the extended and upgraded wavelength channel on line is realized, and installation and maintenance personnel do not need to carry out door-to-door detection and do not need to interrupt the existing service.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a wavelength characteristic detection method, device, communication equipment and computer-readable storage medium. Background Art

[0002] The currently operational EPON (Ethernet Passive Optical Network) system has a need to coexist and evolve with 50G PON (a new generation of passive optical network technology). However, unlike the GPON (Gigabit-Capable PON) system based on the ITU-T standard system, the EPON system based on the IEEE standard system defines an upstream wavelength range of 1260~1360nm, which occupies the upstream and downstream wavelength ranges of 50G PON. At the same time, there are also a small number of EPON ONU devices that share physical layer devices with GPON ONU (optical network unit) in the existing network. The wavelength range is 1290~1330nm, which can coexist with 50G PON through wavelength division.

[0003] Therefore, the upstream wavelengths of existing EPON terminals are of two types: unnarrowed (1260~1360nm) and narrowed (1290~1330nm). If there is a need for coexistence of three generations of wavelength division, it is necessary to identify the unnarrowed EPON terminals in advance and replace them on site to ensure the compatibility of 50GPON when coexisting with the existing network and improve the service experience of broadband users.

[0004] However, the current passive optical network OLT (optical line terminal) equipment does not have the ability to analyze the spectrum parameters of the laser emission wavelength, and cannot realize the function of online detection to find out whether the wavelength of the EPON ONU is narrowed. At present, installation and maintenance personnel generally conduct on-site inspections on all EPON terminals (whether narrowed or not), and the service connection needs to be disconnected during the inspection process, resulting in interruption of existing network services, large resource investment, and high labor costs. Summary of the invention

[0005] Based on this, it is necessary to provide a wavelength characteristic detection method, device, communication equipment and computer-readable storage medium to address the above-mentioned technical problems, which can detect online whether there is a conflict between the emission wavelength of the optical network unit and the expanded and upgraded wavelength channel, thereby saving manpower and time costs and improving operation and maintenance efficiency.

[0006] In a first aspect, the present application provides a wavelength characteristic detection method, comprising:

[0007] In the current detection cycle, an uplink time slot resource is allocated to the optical network unit connected to the target port, and an uplink signal is received through each wavelength channel of the target port; the target port includes a first wavelength channel and a second wavelength channel; the optical network unit under the first wavelength channel is in a working state, and the second wavelength channel is an extended and upgraded wavelength channel;

[0008] If the first uplink signal of the second wavelength channel is detected, determining the second uplink signal in the first wavelength channel that is received at the same time as the first uplink signal;

[0009] Determining uplink timeslot information corresponding to the second uplink signal;

[0010] The optical network unit corresponding to the uplink time slot information is determined as an abnormal target terminal.

[0011] In one embodiment, the method further comprises:

[0012] parsing a source optical network unit of a first uplink signal, and parsing a source optical network unit of a second uplink signal;

[0013] If the source optical network unit of the first uplink signal, the source optical network unit of the second uplink signal, and the optical network unit corresponding to the uplink time slot information are all consistent, the optical network unit corresponding to the uplink time slot information is determined as an abnormal target terminal.

[0014] In one of the embodiments, after determining the optical network unit corresponding to the uplink time slot information as an abnormal target terminal, the method further includes:

[0015] Determine the optical network units other than the abnormal target terminal under the first wavelength channel as normal target terminals corresponding to the current detection cycle;

[0016] The abnormal target terminals and normal target terminals corresponding to multiple detection cycles are integrated to obtain the wavelength characteristic detection result.

[0017] In one of the embodiments, after integrating abnormal target terminals and normal target terminals corresponding to multiple detection cycles to obtain wavelength characteristic detection results, the method further includes:

[0018] From the resource management system, query the terminal information connected to the target port;

[0019] Determine the undetected terminal based on the wavelength characteristic detection result and the terminal information;

[0020] If there are undetected terminals, the next detection cycle will be entered.

[0021] In one embodiment, the method further comprises:

[0022] Query the historical online information of undetected terminals;

[0023] Set the detection interval based on historical online information;

[0024] Enter the next detection cycle according to the detection interval.

[0025] In one of the embodiments, the first wavelength channel is an EPON upstream channel, the second wavelength channel is a 50G PON upstream channel; the abnormal target terminal is an EPON terminal whose wavelength is not narrowed; after determining the optical network unit corresponding to the upstream time slot information as the abnormal target terminal, the method further includes:

[0026] Generate terminal upgrade information according to abnormal target terminal;

[0027] Report terminal upgrade information.

[0028] In one of the embodiments, the first wavelength channel is a 10G EPON uplink channel, and the second wavelength channel is a 50GPON uplink channel; the abnormal target terminal is a 10G EPON terminal with an abnormal transmission wavelength; after determining the optical network unit corresponding to the uplink time slot information as the abnormal target terminal, the method further includes:

[0029] Generate terminal maintenance information according to abnormal target terminal;

[0030] Report terminal maintenance information.

[0031] In a second aspect, the present application also provides a wavelength characteristic detection device, comprising:

[0032] A configuration module is used to allocate uplink time slot resources to the optical network unit connected to the target port in the current detection cycle, and receive uplink signals through each wavelength channel of the target port; the target port includes a first wavelength channel and a second wavelength channel; the optical network unit under the first wavelength channel is in a working state, and the second wavelength channel is an extended and upgraded wavelength channel;

[0033] A detection module, configured to determine, if a first uplink signal of a second wavelength channel is detected, a second uplink signal in the first wavelength channel that is consistent with a reception time of the first uplink signal;

[0034] The determination module is used to determine the uplink time slot information corresponding to the second uplink signal; and determine the optical network unit corresponding to the uplink time slot information as an abnormal target terminal.

[0035] In a third aspect, the present application further provides a communication device, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0036] In the current detection cycle, an uplink time slot resource is allocated to the optical network unit connected to the target port, and an uplink signal is received through each wavelength channel of the target port; the target port includes a first wavelength channel and a second wavelength channel; the optical network unit under the first wavelength channel is in a working state, and the second wavelength channel is an extended and upgraded wavelength channel;

[0037] If the first uplink signal of the second wavelength channel is detected, determining the second uplink signal in the first wavelength channel that is received at the same time as the first uplink signal;

[0038] Determining uplink timeslot information corresponding to the second uplink signal;

[0039] The optical network unit corresponding to the uplink time slot information is determined as an abnormal target terminal.

[0040] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the following steps are implemented:

[0041] In the current detection cycle, an uplink time slot resource is allocated to the optical network unit connected to the target port, and an uplink signal is received through each wavelength channel of the target port; the target port includes a first wavelength channel and a second wavelength channel; the optical network unit under the first wavelength channel is in a working state, and the second wavelength channel is an extended and upgraded wavelength channel;

[0042] If the first uplink signal of the second wavelength channel is detected, determining the second uplink signal in the first wavelength channel that is received at the same time as the first uplink signal;

[0043] Determining uplink timeslot information corresponding to the second uplink signal;

[0044] The optical network unit corresponding to the uplink time slot information is determined as an abnormal target terminal.

[0045] The wavelength characteristic detection method, device, communication equipment and computer-readable storage medium described above allocate uplink time slot resources to the optical network unit connected to the target port in the current detection cycle, and receive uplink signals through each wavelength channel of the target port; the target port includes a first wavelength channel and a second wavelength channel; the optical network unit under the first wavelength channel is in working state, and the second wavelength channel is an extended and upgraded wavelength channel; if the first uplink signal of the second wavelength channel is detected, the second uplink signal in the first wavelength channel that is consistent with the receiving time of the first uplink signal is determined; the uplink time slot information corresponding to the second uplink signal is determined; and the optical network unit corresponding to the uplink time slot information is determined as an abnormal target terminal. Through the above method, the function of online detection of whether the emission wavelength of the optical network unit conflicts with the extended and upgraded wavelength channel is realized, and there is no need for installation and maintenance personnel to conduct on-site detection, which saves manpower and time costs and improves operation and maintenance efficiency; there is no need to interrupt existing services, which reduces the inconvenience caused to users by service interruptions and improves network stability; it provides a reference for subsequent terminal replacement work and improves the efficiency of network upgrade evolution. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0047] FIG1 is a schematic diagram of a wavelength range of a multimode passive optical network in one embodiment;

[0048] FIG2 is a schematic diagram of the upgrade evolution of a multimode passive optical network in one embodiment;

[0049] FIG3 is a diagram showing an application environment of a wavelength characteristic detection method according to an embodiment;

[0050] FIG4 is a schematic flow chart of a wavelength characteristic detection method in one embodiment;

[0051] FIG5 is a schematic diagram of a system architecture in one embodiment;

[0052] FIG6 is a schematic flow chart of a wavelength characteristic detection method in another embodiment;

[0053] FIG7 is a block diagram of a wavelength characteristic detection device in one embodiment;

[0054] FIG8 is a diagram showing the internal structure of a communication device in one embodiment. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0056] It can be understood that, with reference to Figure 1, Figure 1 is a schematic diagram of the wavelength range of a multimode passive optical network in one embodiment. In this application, the EPON terminal with an emission wavelength in the wavelength range of 1260~1360nm is referred to as a terminal with an unnarrowed wavelength, and the EPON terminal with an emission wavelength in the wavelength range of 1290~1330nm is referred to as a terminal with a narrowed wavelength. There are three options for the 50G PON upstream wavelength: US1, US2, and US3. The upstream wavelength range of the terminal with an unnarrowed wavelength is larger, occupying the upstream and downstream working wavelengths of the 50G PON. Therefore, the terminal with an unnarrowed wavelength cannot coexist with the 50G PON wavelength division. The terminal with a narrowed wavelength can coexist with the 50G PON wavelength division. Therefore, it is necessary to identify the terminal with an unnarrowed wavelength in advance and replace it on site to ensure the compatibility of 50G PON when it is deployed with the existing network and improve the service experience of broadband users.

[0057] Referring to Figure 2, Figure 2 is a schematic diagram of the upgrade and evolution of a multimode passive optical network in an embodiment; the existing EPON system network includes EPON terminals with unnarrowed wavelengths (using FP lasers with a wavelength range of 1260~1360nm), EPON terminals with narrowed wavelengths (using DFB lasers with a wavelength range of 1290~1330nm), 10G / 1G EPON gateways (using DFB lasers with a wavelength range of 1260~1280nm), and 10G EPON symmetric gateways (using DFB lasers with a wavelength range of 1260~1280nm). In order to achieve the coexistence of narrowed EPON, 10G EPON, and 50G PON, it is necessary to detect and locate the terminals with unnarrowed wavelengths in the existing network and replace them. That is, the type 1 terminals with unnarrowed wavelengths in the existing network need to be checked and withdrawn from the network, and type 2 to type 4 terminals can coexist with type 5 50G PON terminals in wavelength division, thereby achieving the upgrade and evolution of the EPON network.

[0058] However, the current passive optical network OLT (optical line terminal) equipment does not have the ability to analyze the spectrum parameters of the laser emission wavelength, and cannot realize the function of online detection to find out whether the wavelength of the EPON ONU is narrowed. At present, installation and maintenance personnel generally conduct on-site inspections on all EPON terminals (whether narrowed or not), and the service connection needs to be disconnected during the inspection process, resulting in interruption of existing network services, large resource investment, and high labor costs.

[0059] Among them, Wavelength Multiplexing Coexistence refers to the coexistence of different generations and types of passive optical network systems in the same optical fiber distribution network (ODN) using different upstream and downstream wavelengths, without interfering with each other's services. Upstream wavelength refers to the wavelength emitted by the laser in the transmitter of the optical network unit when the optical network unit sends a data message and the optical line terminal receives the data message in the passive optical network system, which is generally a wavelength range.

[0060] Based on this, the present application provides a wavelength characteristic detection method, which realizes the function of online detection of whether the emission wavelength of the optical network unit conflicts with the expanded and upgraded wavelength channel, and provides a reference for subsequent terminal replacement work.

[0061] The wavelength characteristic detection method provided in the embodiment of the present application can be applied to the application environment shown in Figure 3. Among them, the passive optical network system includes an optical line terminal (OLT) 102, a splitter and an optical network unit (ONU) 104. The optical line terminal 102 is connected to at least one optical network unit 104 through the splitter. It can be understood that the OLT can be connected to more or fewer ONUs. Figure 3 is only an example and does not constitute a limitation on the passive optical network system to which the present application scheme is applied. Among them, the optical line terminal 102 detects whether the emission wavelength of the optical network unit 104 conflicts with the extended and upgraded wavelength channel based on the wavelength characteristic detection method provided in the embodiment of the present application, providing a reference for subsequent terminal replacement work.

[0062] In an exemplary embodiment, as shown in FIG. 4 , a wavelength characteristic detection method is provided, which is described by taking the method applied to the optical line terminal 102 in FIG. 3 as an example, including:

[0063] Step 402, in the current detection cycle, allocate uplink time slot resources to the optical network unit connected to the target port, and receive uplink signals through each wavelength channel of the target port; the target port includes a first wavelength channel and a second wavelength channel; the optical network unit under the first wavelength channel is in working state, and the second wavelength channel is an extended and upgraded wavelength channel.

[0064] Among them, the optical line terminal of this embodiment is a multi-generation coexisting OLT after upgrading and deploying related services. It can be understood that the optical line terminal allocates uplink time slot resources to each optical network unit hanging under the target port based on the time slot resource allocation algorithm, and receives the corresponding uplink signal. The time slot resource allocation algorithm is, for example, a static allocation algorithm, a dynamic allocation algorithm, a polling allocation algorithm, etc., which is not limited in this embodiment. The target port is any passive optical network port on the optical line terminal, which can be a designated detection port or a port determined according to the detection order.

[0065] The current detection cycle refers to the cycle in which the optical line terminal performs the online wavelength characteristic detection task. It can be understood that the optical line terminal generates an online wavelength characteristic detection task under the configuration of the user, and if the current moment reaches the task execution time, the online wavelength characteristic detection task is executed within the current detection cycle. Optionally, the number of detections and the detection time interval are configured in advance, and the optical line terminal completes multiple online wavelength characteristic detection tasks based on the detection time interval.

[0066] A wavelength channel refers to a channel in a passive optical network system that uses optical signals of different wavelengths for signal transmission. In an optical line terminal, multiple wavelength channels are configured to carry optical signal transmissions of different modes to meet the needs of different application scenarios. The first wavelength channel is a wavelength channel that carries current service data. In the current passive optical network system, the optical network unit under the first wavelength channel is in working condition. The optical network unit is in working condition, indicating that the optical network unit has been successfully powered on and is communicating normally with the optical line terminal to transmit current service data. The second wavelength channel is an extended and upgraded wavelength channel that does not carry service data. For example, the existing network needs to be upgraded to 50G PON, and the second wavelength channel is a wavelength channel that carries the 50GPON upstream signal. It can be understood that the corresponding optical network unit is not deployed under the second wavelength channel, or the optical network unit under the second wavelength channel is in a closed state.

[0067] Step 404: If the first uplink signal of the second wavelength channel is detected, determine the second uplink signal in the first wavelength channel that is received at the same time as the first uplink signal.

[0068] Among them, the optical line terminal compares the uplink signals received by the first wavelength channel and the second wavelength channel to locate the conflicting uplink signals. It can be understood that the second wavelength channel does not carry service data. If the uplink signal is received through the second wavelength channel, it means that the emission wavelength of the online optical network unit conflicts with the wavelength carried by the expanded and upgraded second wavelength channel, and the uplink signal of the optical network unit is received by the first wavelength channel and the second wavelength channel at the same time. The "first" and "second" in this embodiment are used to distinguish the uplink signals received by different wavelength channels.

[0069] Step 406: Determine uplink time slot information corresponding to the second uplink signal.

[0070] Step 408: determine the optical network unit corresponding to the uplink time slot information as an abnormal target terminal.

[0071] Among them, the optical line terminal manages the uplink time slot resources of each optical network unit. By analyzing the transmission information of the second uplink signal, the uplink time slot information corresponding to the second uplink signal can be determined, thereby locating the conflicting optical network unit and recording it as an abnormal target terminal.

[0072] In an optional implementation, in the scenario of upgrading and evolving the existing passive optical network system, after the 50G PON service card is upgraded and deployed on the OLT side, the service signal corresponding to the upstream time slot of the EPON terminal is detected through the 50G PON port on the side of the office, so as to realize the online detection and positioning of the EPON terminal whose wavelength is not narrowed and is hung under the passive optical network port. In a specific implementation, the 50G PON multi-generation coexistence OLT normally allocates upstream time slot resources to each downstream ONU and receives the upstream signal, while comparing the signals received by the EPON upstream channel and the 50G PON upstream channel, and locates the information of the EPON terminal whose wavelength is not narrowed in combination with the upstream time slot resources. It can be understood that the embodiments of the present application can be applied to the scenario of the expansion and upgrading of the existing network to 50G PON, and can also be applied to the upgrade and evolution scenarios of other passive optical networks, and this embodiment is not limited to this.

[0073] In the above wavelength characteristic detection method, in the current detection cycle, the optical network unit connected to the target port is allocated with uplink time slot resources, and the uplink signal is received through each wavelength channel of the target port; the target port includes a first wavelength channel and a second wavelength channel; the optical network unit under the first wavelength channel is in working state, and the second wavelength channel is an extended and upgraded wavelength channel; if the first uplink signal of the second wavelength channel is detected, the second uplink signal in the first wavelength channel that is consistent with the receiving time of the first uplink signal is determined; the uplink time slot information corresponding to the second uplink signal is determined; and the optical network unit corresponding to the uplink time slot information is determined as an abnormal target terminal. Through the above method, the function of online detection of whether the emission wavelength of the optical network unit conflicts with the extended and upgraded wavelength channel is realized, and there is no need for installation and maintenance personnel to conduct on-site detection, which saves manpower and time costs and improves operation and maintenance efficiency; there is no need to interrupt existing services, which reduces the inconvenience caused to users by service interruptions and improves network stability; it provides a reference for subsequent terminal replacement work and improves the efficiency of network upgrade evolution.

[0074] In an exemplary embodiment, the method also includes: parsing the source optical network unit of the first uplink signal, and parsing the source optical network unit of the second uplink signal; if the source optical network unit of the first uplink signal, the source optical network unit of the second uplink signal, and the optical network unit corresponding to the uplink time slot information are all consistent, then the optical network unit corresponding to the uplink time slot information is determined as an abnormal target terminal.

[0075] Among them, the optical line terminal assigns a unique identifier (such as LLID logical identifier) ​​to each connected optical network unit. By checking the unique identifier in the uplink signal, the source optical network unit of the uplink signal can be determined. By verifying the uplink time slot resources and the unique identifier, it is determined whether the first uplink signal and the second uplink signal are optical signals transmitted by the same optical network unit. If the source optical network unit of the first uplink signal, the source optical network unit of the second uplink signal, and the optical network unit corresponding to the uplink time slot information are all consistent, it indicates that the uplink signal of a certain optical network unit is received by the first wavelength channel and the second wavelength channel at the same time, and the optical network unit is recorded as an abnormal target terminal.

[0076] In this embodiment, the accuracy of abnormality detection can be improved by combining the identification of uplink time slot resources and the identification of source optical network units.

[0077] In an exemplary embodiment, after step 408, the method further includes: determining the optical network units other than the abnormal target terminals under the first wavelength channel as normal target terminals corresponding to the current detection cycle; integrating the abnormal target terminals and normal target terminals corresponding to multiple detection cycles to obtain wavelength characteristic detection results.

[0078] Among them, due to the different online times of different optical network units, it is impossible to fully cover all optical network units connected to the target port in a single detection cycle. In this embodiment, by recording abnormal target terminals and normal target terminals in multiple detection cycles, the wavelength characteristics of each optical network unit can be fully detected, providing a reference for subsequent terminal replacement work.

[0079] It can be understood that during the upgrade and evolution of the 50G PON network system, through the method of this embodiment, the optical network unit that conflicts with the 50G PON wavelength channel is detected in each detection cycle, so as to determine the abnormal target terminal (EPON terminal with non-narrowed wavelength) and the normal target terminal (EPON terminal with narrowed wavelength).

[0080] In an optional implementation, the number of detections and the detection time interval are configured in advance, and the optical line terminal completes multiple online wavelength characteristic detection tasks based on the detection time interval. Assume that the configured number of detections is N, and the current detection cycle is the Mth detection cycle. If M=N, then the type information of each optical network unit connected to the target port is updated according to the wavelength characteristic detection result, and the type information is used to characterize whether the optical network unit is normal or abnormal (the wavelength is narrowed or the wavelength is not narrowed). If M<N, wait for the next detection cycle according to the detection time interval and continue to perform the online wavelength characteristic detection task. Optionally, the optical line terminal communicates with the resource management system of the passive optical network system, and the resource management system manages the type information of each optical network unit. The optical line terminal reports the wavelength characteristic detection result to the resource management system, and the resource management system updates the managed type information according to the wavelength characteristic detection result.

[0081] In an exemplary embodiment, after the abnormal target terminals and normal target terminals corresponding to multiple detection cycles are integrated to obtain the wavelength characteristic detection results, the method also includes: querying the terminal information connected to the target port from the resource management system; determining the undetected terminals based on the wavelength characteristic detection results and the terminal information; if there are undetected terminals, entering the next detection cycle.

[0082] Among them, the optical line terminal queries the terminal information of all ONUs corresponding to the first wavelength channel under the OLT PON port where the wavelength characteristics need to be detected through the resource management system of the passive optical network system. The terminal information may include the type, quantity, authentication information (such as LLID logical identifier), etc. of the ONU. The ONU may specifically be an EPON type ONU, a 10G EPON (including symmetric and asymmetric) type ONU, etc. It can be understood that the wavelength characteristic detection result includes abnormal target terminals and normal target terminals that have been detected in multiple detection cycles. By comparing with the terminal information, it can be determined whether the online wavelength characteristic detection task has been completed. Specifically, if the wavelength characteristic detection result includes the detection results corresponding to all terminal information, it is determined that the online wavelength characteristic detection task has been completed and there is no need to enter the next detection cycle; if the wavelength characteristic detection result does not cover the detection results corresponding to all terminal information, it is determined that there are undetected terminals and the next detection cycle is entered.

[0083] In one implementation, the optical line terminal generates a list of ONUs to be detected based on the terminal information connected to the target port queried from the resource management system, updates the list of ONUs to be detected based on the wavelength characteristic detection results corresponding to each detection cycle, and deletes the detected abnormal target terminals and normal target terminals from the list.

[0084] Optionally, assume that the configured number of detections is N, and the current detection cycle is the Mth detection cycle. If M=N, or the list of ONUs to be detected is empty, it is determined that the online wavelength characteristic detection task has been completed, and the wavelength characteristic detection result is reported to the resource management system. If M<N, and the list of ONUs to be detected is not empty, then enter the next detection cycle. In an optional implementation method, the resource management system divides the ONUs connected to the target port into abnormal target terminals, normal target terminals, and undetected terminals based on the wavelength characteristic detection results. For undetected terminals that have not been online, the installation and maintenance personnel can be reminded to conduct on-site detection and on-site replacement, etc.

[0085] Referring to Figure 5, Figure 5 is a schematic diagram of the system architecture in one embodiment; the multi-generation coexistence OLT is integrated with an upstream signal wavelength detection and processing module, and the OLT communicates with different types of ONUs through a splitter. The main function of the splitter is to distribute downstream data and concentrate upstream data. The OLT shown in Figure 5 is a PON OLT in which three generations of wavelength division coexist: narrowed EPON, 10G EPON, and 50G PON. The ONUs connected to it are EPON (including wavelength narrowing and wavelength non-narrowing) type ONUs and 10G EPON (including symmetric and asymmetric) type ONUs; the OLT includes an EPON upstream channel and a 50G PON upstream channel. In a specific implementation, the upstream signal wavelength detection and processing module can query the terminal information of all types of ONUs under the OLT PON port whose wavelength characteristics need to be detected from the resource management system. While the OLT normally allocates upstream time slot resources to each downstream ONU and receives upstream signals, it compares the signals received by the EPON upstream channel and the 50G PON upstream channel. If the 50G PON upstream channel can detect the upstream signal of the EPON upstream channel in certain time slots and it matches the upstream signal of the EPON channel at the same time, it indicates that the EPON ONU wavelength corresponding to these time slots is not narrowed, and some wavelength signals enter the 50G PON upstream channel at the same time. Referring to the EPON upstream channel and the 50G PON upstream channel in Figure 5, the upstream signal of EPON ONU#2 is received by both the EPON upstream channel and the 50G PON upstream channel, and it is determined that the upstream wavelength of the ONU is not narrowed.

[0086] In an exemplary embodiment, the method further includes: querying historical online information of undetected terminals; setting a detection interval according to the historical online information; and entering a next detection cycle according to the detection interval.

[0087] The historical online information refers to the record of the undetected terminal connecting to the passive optical network and successfully transmitting data in the past time period, including the time of successful connection to the network and the time of disconnection. It can be understood that the resource management system records the historical online information of each optical network unit, and the unique identifier of the undetected terminal can be used to query its corresponding historical online information from the resource management system.

[0088] By analyzing historical online information, the online time of undetected terminals is predicted, and the detection interval is set according to the current time and the online time. Based on the detection interval, when the time point of the next detection cycle is reached, the next detection cycle is entered to perform the online wavelength characteristic detection task.

[0089] In this embodiment, a reasonable detection interval is set according to the historical online information of the undetected terminal, and the online wavelength characteristic detection task is performed as much as possible during the time period when the undetected terminal is online, so as to effectively perform wavelength characteristic detection on each optical network unit connected to the target port, thereby improving the comprehensiveness and accuracy of the wavelength characteristic detection.

[0090] In an exemplary embodiment, the first wavelength channel is an EPON upstream channel, and the second wavelength channel is a 50GPON upstream channel; the abnormal target terminal is an EPON terminal whose wavelength is not narrowed; after step 408, the method further includes: generating terminal upgrade information according to the abnormal target terminal; and reporting the terminal upgrade information.

[0091] Among them, the EPON terminal with unnarrowed wavelength refers to the EPON terminal with an emission wavelength in the wavelength range of 1260~1360nm. Through the method of this embodiment, the EPON terminal with unnarrowed wavelength in the passive optical network system can be detected. The EPON terminal with unnarrowed wavelength needs to be replaced on-site by the installation and maintenance personnel to ensure that the passive optical network system after expansion and upgrading meets the coexistence requirements of multiple generations of wavelength division. In this embodiment, according to the terminal information of the abnormal target terminal, the reporting content is automatically written, the terminal upgrade information is generated, and the terminal upgrade information is reported to the resource management system, thereby reminding the installation and maintenance personnel to perform on-site replacement.

[0092] In an optional implementation, refer to FIG. 6 , which is a flow chart of a wavelength characteristic detection method in another embodiment; wherein, the service board of the existing OLT supporting EPON / 10G EPON is upgraded and replaced with a PON OLT supporting narrowed EPON / 10G EPON / 50G PON. The upstream signal wavelength detection and processing module obtains information of all ONUs under the OLT PON port that needs to detect the upstream wavelength characteristics from the resource management system, including the number of EPON and 10G EPON terminals, LLID and other information. The upstream signal wavelength detection and processing module performs online wavelength characteristic detection for the EPON terminal according to the configuration of the number of detections, detection time interval and the like. In the Mth detection cycle: OLT allocates upstream time slot resources to all online EPON terminals connected to it according to the normal business process; all online EPON terminals send upstream signals according to the upstream time slot resources allocated by OLT; OLT opens the 50G PON receiving port and synchronously receives the upstream signal of EPON channel; OLT compares the upstream signals received by 50G PON and EPON channel. If they correspond in time, it indicates that there is an EPON terminal with unnarrowed wavelength, and its wide spectrum upstream signal enters the 50G PON channel upstream receiver; OLT records the information of the ONU with unnarrowed wavelength and provides it to the upstream signal wavelength detection and processing module. The upstream signal wavelength detection and processing module updates the list of ONUs to be detected based on the detection results. It is determined whether the preset number of detections has ended. If not, it enters the next detection cycle; if it has ended, the detection results are reported to the resource management system to carry out follow-up work, such as on-site detection for EPON ONUs that have not been online, on-site replacement for EPON ONUs with unnarrowed wavelengths, etc.

[0093] In this embodiment, it is possible to detect online whether the wavelength of the EPON ONU is narrowed, ensure the compatibility of 50G PON when it is coexisting with the existing network, and improve the service experience of broadband users.

[0094] In an exemplary embodiment, the first wavelength channel is a 10G EPON uplink channel, and the second wavelength channel is a 50G PON uplink channel; the abnormal target terminal is a 10G EPON terminal with an abnormal transmission wavelength; after step 408, the method further includes: generating terminal maintenance information according to the abnormal target terminal; and reporting the terminal maintenance information.

[0095] Among them, based on wavelength division coexistence technology, 10G EPON type ONU terminals can be compatible with 50G PON. However, due to process influence, the emission wavelength of the ONU terminal may fluctuate and occupy the upstream wavelength range of 50G PON. 10G EPON terminals with abnormal emission wavelengths need to be repaired or replaced by installation and maintenance personnel to ensure the stable operation of the expanded and upgraded passive optical network system. In this embodiment, according to the terminal information of the abnormal target terminal, the reporting content is automatically written, the terminal maintenance information is generated, and the terminal maintenance information is reported to the resource management system, thereby reminding the installation and maintenance personnel to perform on-site maintenance.

[0096] Through the method of this embodiment, 10G EPON terminals with abnormal transmission wavelengths can be detected, providing a reference for subsequent terminal replacement and maintenance work, saving manpower and time costs; by detecting and identifying 10G EPON terminals with abnormal transmission wavelengths, the impact of abnormal EPON terminals in the existing network on the communication quality of 50G PON can be reduced, thereby improving network stability.

[0097] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0098] Based on the same inventive concept, the embodiment of the present application also provides a wavelength characteristic detection device for implementing the wavelength characteristic detection method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more wavelength characteristic detection device embodiments provided below can refer to the limitations on the wavelength characteristic detection method above, and will not be repeated here.

[0099] In an exemplary embodiment, as shown in FIG7 , a wavelength characteristic detection device is provided, comprising:

[0100] Configuration module 702, used for allocating uplink time slot resources to the optical network unit connected to the target port in the current detection cycle, and receiving uplink signals through each wavelength channel of the target port; the target port includes a first wavelength channel and a second wavelength channel; the optical network unit under the first wavelength channel is in working state, and the second wavelength channel is an extended and upgraded wavelength channel;

[0101] The detection module 704 is configured to determine, if the first uplink signal of the second wavelength channel is detected, a second uplink signal in the first wavelength channel that is received at the same time as the first uplink signal;

[0102] The determination module 706 is used to determine the uplink time slot information corresponding to the second uplink signal; and determine the optical network unit corresponding to the uplink time slot information as an abnormal target terminal.

[0103] In the above wavelength characteristic detection device, in the current detection cycle, the optical network unit connected to the target port is allocated with uplink time slot resources, and the uplink signal is received through each wavelength channel of the target port; the target port includes a first wavelength channel and a second wavelength channel; the optical network unit under the first wavelength channel is in working state, and the second wavelength channel is an extended and upgraded wavelength channel; if the first uplink signal of the second wavelength channel is detected, the second uplink signal in the first wavelength channel that is consistent with the receiving time of the first uplink signal is determined; the uplink time slot information corresponding to the second uplink signal is determined; and the optical network unit corresponding to the uplink time slot information is determined as an abnormal target terminal. Through the above method, the function of online detection of whether the emission wavelength of the optical network unit conflicts with the extended and upgraded wavelength channel is realized, and there is no need for installation and maintenance personnel to conduct on-site detection, which saves manpower and time costs and improves operation and maintenance efficiency; there is no need to interrupt existing services, which reduces the inconvenience caused to users by service interruptions and improves network stability; it provides a reference for subsequent terminal replacement work and improves the efficiency of network upgrade evolution.

[0104] In an exemplary embodiment, the determination module 706 is also used to parse the source optical network unit of the first uplink signal and the source optical network unit of the second uplink signal; if the source optical network unit of the first uplink signal, the source optical network unit of the second uplink signal, and the optical network unit corresponding to the uplink time slot information are all consistent, the optical network unit corresponding to the uplink time slot information is determined as an abnormal target terminal.

[0105] In an exemplary embodiment, the determination module 706 is also used to determine the optical network units other than the abnormal target terminals under the first wavelength channel as normal target terminals corresponding to the current detection cycle; and integrate the abnormal target terminals and normal target terminals corresponding to multiple detection cycles to obtain wavelength characteristic detection results.

[0106] In an exemplary embodiment, the detection module 704 is also used to query the terminal information connected to the target port from the resource management system; determine the undetected terminal according to the wavelength characteristic detection result and the terminal information; if there is an undetected terminal, enter the next detection cycle.

[0107] In an exemplary embodiment, the detection module 704 is further configured to query historical online information of undetected terminals; set a detection interval according to the historical online information; and enter the next detection cycle according to the detection interval.

[0108] In an exemplary embodiment, the first wavelength channel is an EPON upstream channel, the second wavelength channel is a 50GPON upstream channel; the abnormal target terminal is an EPON terminal whose wavelength is not narrowed; the device further includes:

[0109] The reporting module is used to generate terminal upgrade information according to the abnormal target terminal; and report the terminal upgrade information.

[0110] In an exemplary embodiment, the first wavelength channel is a 10G EPON upstream channel, the second wavelength channel is a 50G PON upstream channel; the abnormal target terminal is a 10G EPON terminal with an abnormal transmission wavelength; the device further includes:

[0111] The reporting module is used to generate terminal maintenance information according to the abnormal target terminal; and report the terminal maintenance information.

[0112] Each module in the above-mentioned wavelength characteristic detection device can be implemented in whole or in part by software, hardware and a combination thereof. Each of the above-mentioned modules can be embedded in or independent of the processor in the communication device in the form of hardware, or can be stored in the memory in the communication device in the form of software, so that the processor can call and execute the corresponding operations of each of the above modules.

[0113] In an exemplary embodiment, a communication device is provided, which may be a server, and its internal structure diagram may be shown in FIG8. The communication device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. The processor, the memory and the input / output interface are connected via a system bus, and the communication interface is connected to the system bus via the input / output interface. The processor of the communication device is used to provide computing and control capabilities. The memory of the communication device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the communication device is used to exchange information between the processor and an external device. The communication interface of the communication device is used to communicate with an external terminal via a network connection. When the computer program is executed by the processor, a wavelength characteristic detection method is implemented.

[0114] Those skilled in the art will understand that the structure shown in FIG. 8 is merely a block diagram of a partial structure related to the scheme of the present application, and does not constitute a limitation on the communication device to which the scheme of the present application is applied. The specific communication device may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0115] In an exemplary embodiment, a communication device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the following steps when executing the computer program: in a current detection cycle, an uplink time slot resource is allocated to an optical network unit connected to a target port, and an uplink signal is received through each wavelength channel of the target port; the target port includes a first wavelength channel and a second wavelength channel; the optical network unit under the first wavelength channel is in a working state, and the second wavelength channel is an extended and upgraded wavelength channel; if a first uplink signal of the second wavelength channel is detected, a second uplink signal in the first wavelength channel that is consistent with the reception time of the first uplink signal is determined; the uplink time slot information corresponding to the second uplink signal is determined; and the optical network unit corresponding to the uplink time slot information is determined as an abnormal target terminal.

[0116] In one embodiment, when the processor executes the computer program, the following steps are also implemented: parsing the source optical network unit of the first uplink signal, and parsing the source optical network unit of the second uplink signal; if the source optical network unit of the first uplink signal, the source optical network unit of the second uplink signal, and the optical network unit corresponding to the uplink time slot information are all consistent, then the optical network unit corresponding to the uplink time slot information is determined as an abnormal target terminal.

[0117] In one embodiment, when the processor executes the computer program, the following steps are also implemented: the optical network units other than the abnormal target terminals under the first wavelength channel are determined as normal target terminals corresponding to the current detection cycle; the abnormal target terminals and normal target terminals corresponding to multiple detection cycles are integrated to obtain wavelength characteristic detection results.

[0118] In one embodiment, when the processor executes the computer program, the following steps are also implemented: querying the terminal information connected to the target port from the resource management system; determining the undetected terminal based on the wavelength characteristic detection result and the terminal information; if there is an undetected terminal, entering the next detection cycle.

[0119] In one embodiment, when the processor executes the computer program, the following steps are further implemented: querying historical online information of undetected terminals; setting a detection interval according to the historical online information; and entering the next detection cycle according to the detection interval.

[0120] In one embodiment, when the processor executes the computer program, the following steps are further implemented: generating terminal upgrade information according to the abnormal target terminal; and reporting the terminal upgrade information.

[0121] In one embodiment, when the processor executes the computer program, the following steps are further implemented: generating terminal maintenance information according to the abnormal target terminal; and reporting the terminal maintenance information.

[0122] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented: in a current detection cycle, an uplink time slot resource is allocated to an optical network unit connected to a target port, and an uplink signal is received through each wavelength channel of the target port; the target port includes a first wavelength channel and a second wavelength channel; the optical network unit under the first wavelength channel is in a working state, and the second wavelength channel is an extended and upgraded wavelength channel; if a first uplink signal of the second wavelength channel is detected, a second uplink signal in the first wavelength channel that is consistent with the reception time of the first uplink signal is determined; uplink time slot information corresponding to the second uplink signal is determined; and the optical network unit corresponding to the uplink time slot information is determined as an abnormal target terminal.

[0123] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: parsing the source optical network unit of the first uplink signal, and parsing the source optical network unit of the second uplink signal; if the source optical network unit of the first uplink signal, the source optical network unit of the second uplink signal, and the optical network unit corresponding to the uplink time slot information are all consistent, then the optical network unit corresponding to the uplink time slot information is determined as an abnormal target terminal.

[0124] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: the optical network units other than the abnormal target terminals under the first wavelength channel are determined as normal target terminals corresponding to the current detection cycle; the abnormal target terminals and normal target terminals corresponding to multiple detection cycles are integrated to obtain wavelength characteristic detection results.

[0125] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: querying the terminal information connected to the target port from the resource management system; determining the undetected terminal based on the wavelength characteristic detection result and the terminal information; if there is an undetected terminal, entering the next detection cycle.

[0126] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: querying historical online information of undetected terminals; setting a detection interval according to the historical online information; and entering the next detection cycle according to the detection interval.

[0127] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: generating terminal upgrade information according to the abnormal target terminal; and reporting the terminal upgrade information.

[0128] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: generating terminal maintenance information according to the abnormal target terminal; and reporting the terminal maintenance information.

[0129] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0130] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0131] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0132] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A wavelength characteristic detection method, characterized in that: The method comprises: In the current detection cycle, an uplink time slot resource is allocated to an optical network unit connected to a target port, and an uplink signal is received through each wavelength channel of the target port; the target port includes a first wavelength channel and a second wavelength channel; the optical network unit under the first wavelength channel is in a working state, and the second wavelength channel is an extended and upgraded wavelength channel; If the first uplink signal of the second wavelength channel is detected, determining a second uplink signal in the first wavelength channel that is received at the same time as the first uplink signal; Determining uplink timeslot information corresponding to the second uplink signal; The optical network unit corresponding to the uplink time slot information is determined as an abnormal target terminal.

2. The method according to claim 1, characterized in that The method further comprises: parsing a source optical network unit of the first uplink signal, and parsing a source optical network unit of the second uplink signal; If the source optical network unit of the first uplink signal, the source optical network unit of the second uplink signal, and the optical network unit corresponding to the uplink time slot information are all consistent, the optical network unit corresponding to the uplink time slot information is determined as an abnormal target terminal.

3. The method according to claim 1, characterized in that After determining the optical network unit corresponding to the uplink time slot information as an abnormal target terminal, the method further includes: Determine the optical network units other than the abnormal target terminal under the first wavelength channel as normal target terminals corresponding to the current detection period; The abnormal target terminals and normal target terminals corresponding to multiple detection cycles are integrated to obtain the wavelength characteristic detection result.

4. The method according to claim 3, characterized in that: After integrating the abnormal target terminals and normal target terminals corresponding to the multiple detection cycles to obtain the wavelength characteristic detection result, the method further includes: Querying the terminal information connected to the target port from the resource management system; Determining an undetected terminal according to the wavelength characteristic detection result and the terminal information; If there are undetected terminals, the next detection cycle will be entered.

5. The method according to claim 4, characterized in that The method further comprises: Querying historical online information of the undetected terminal; According to the historical online information, a detection interval is set; Enter the next detection cycle according to the detection interval.

6. The method according to any one of claims 1 to 5, characterized in that The first wavelength channel is an EPON upstream channel, and the second wavelength channel is a 50G PON upstream channel; the abnormal target terminal is an EPON terminal whose wavelength is not narrowed; after determining the optical network unit corresponding to the upstream time slot information as the abnormal target terminal, the method further includes: generating terminal upgrade information according to the abnormal target terminal; The terminal upgrade information is reported.

7. The method according to any one of claims 1 to 5, characterized in that The first wavelength channel is a 10G EPON uplink channel, and the second wavelength channel is a 50G PON uplink channel; the abnormal target terminal is a 10G EPON terminal with an abnormal transmission wavelength; After determining the optical network unit corresponding to the uplink time slot information as an abnormal target terminal, the method further includes: generating terminal maintenance information according to the abnormal target terminal; The terminal maintenance information is reported.

8. A wavelength characteristic detection device, characterized in that: The device comprises: A configuration module is used to allocate uplink time slot resources to an optical network unit connected to a target port in a current detection cycle, and receive uplink signals through each wavelength channel of the target port; the target port includes a first wavelength channel and a second wavelength channel; the optical network unit under the first wavelength channel is in a working state, and the second wavelength channel is an extended and upgraded wavelength channel; a detection module, configured to determine, if the first uplink signal of the second wavelength channel is detected, a second uplink signal in the first wavelength channel that is received at the same time as the first uplink signal; A determination module is used to determine the uplink time slot information corresponding to the second uplink signal; and determine the optical network unit corresponding to the uplink time slot information as an abnormal target terminal.

9. A communication device, comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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