Fault location method, device and storage medium

Abstract

This application discloses a fault location method, device and storage medium, including: a step of a second optical module sending configuration information to a first optical module, and / or a step of the second optical module sending a data stream to the first optical module after receiving the response information of the first optical module, the response information being to configure the first optical module to realize loopback after the first optical module receives the configuration information of the second optical module, and to send response information to the second optical module to confirm the completion of the loopback configuration; a step of the second optical module receiving the data stream sent back from the first optical module; a step of performing fault location based on the response information of the configuration information and / or the returned data stream, where the second optical module is located in an active WDM device and the first optical module is located in an AAU. This application can support fault definition of wireless and transmission devices. The rapid removal of obstacles in the management and control system can reduce labor costs, shorten the investigation time of the fault, improve the management and operation capability of the system, and improve the reliability of the 5G fronthaul network.

Description

Cross-Citation of Related Applications

[0001] This application is based on and claims priority from a Chinese patent application with Chinese patent application number "202111260186.0" and filing date of October 28, 2021, the entire contents of which are hereby incorporated by reference into this application. [Technical Field]

[0002] The present application relates to the field of communication technology, and in particular to an obstacle location method, device and storage medium. [Background technology]

[0003] A medium-scale C-RAN (Centralized Radio Access Network) with 10 centralized stations has become the main networking scenario for 5G fronthaul networks. The cost of the optical fiber direct drive solution in 4G D-RAN (Distributed Radio Access Network) mode is low, but it requires a large amount of optical fiber resources. There is industry consensus that 5G fronthaul will significantly save optical fiber resources by adopting WDM (Wavelength Division Multiplexing) technology.

[0004] Fronthaul solutions based on WDM technology typically include active WDM / OTN (Optical Transport Network) and passive WDM.

[0005] Figure 1 shows a schematic diagram of an active WDM / OTN transmission system. As shown in the figure, the active WDM / OTN solution consists of WDM / OTN devices located on the AAU (Active Antenna Unit) side and the DU (Distributed Unit) side, connected to the AAU and DU via a gray light interface. The line sides of the two WDM / OTN devices use WDM or high-speed Ethernet interfaces. The AAU and DU are located in the wireless management domain, while the active WDM / OTN devices and the optical lines between them are located in the transmission management domain.

[0006] Figure 2 is a schematic diagram of a passive WDM transmission system. As shown in the figure, the passive WDM solution has passive WDM multiplexers on the AAU side and DU side, and the AAU and DU use WDM optical modules. The management interface division of the passive WDM solution is usually considered to be that the AAU and DU are located in the radio management domain, and the passive WDM multiplexers on the AAU side and DU side and the optical lines between them are located in the transmission management domain.

[0007] The active WDM / OTN solution has rich management and operation functions and a clear management and operation interface for wireless and transmission, but it is expensive, requires power supply at the far end, and has limited deployment.

[0008] The passive WDM solution has flexible deployment, no power supply required, and low cost, but it has weak fiber link fault detection capabilities. Regarding the division method of the management and operation interface, if the transmission management domain only includes the passive WDM multiplexers on the AAU side and the DU side and the optical lines between them, the online management method and control system are insufficient, and artificial obstruction removal and wireless network management alarms are required.

[0009] Based on this, one company proposed a semi-active open-WDM solution, consisting of an AAU color optical module, a passive wavelength division multiplexer on the AAU side, and an active WDM device on the DU side, to form a unified managed and controlled fronthaul network. Figure 3 shows a schematic diagram of a semi-active open-WDM transmission system. As shown in the figure, the far end of this solution uses a passive multiplexer, allowing for flexible configuration. The AAU optical module uses top-level coordination technology to load OAM (Operation, Administration, and Maintenance) information, achieving low-cost and lightweight management and control and solving the problem of dumb resource management in the fronthaul network.

[0010] The drawback of the prior art is that this solution also involves two management domains, namely wireless and transmission, and the AAU optical module not only serves as the management and control handle of the semi-active system, but is also located within the AAU device, so that it is not possible to define the faults of the wireless and transmission devices in management and operation. Summary of the Invention [Problem to be solved by the invention]

[0011] This application proposes a fault location method, device and storage medium to solve the problem that the faults of wireless and transmission devices cannot be defined in the management and operation of semi-active Open-WDM schemes. [Means for solving the problem]

[0012] This application provides the following technical solutions: The method includes: a step of the second optical module sending setting information to the first optical module and / or sending a data stream to the first optical module after the second optical module receives response information of the first optical module, where the response information configures the first optical module to realize loopback after the first optical module receives the setting information of the second optical module, and sending response information to the second optical module to confirm completion of the loopback setting; a step of the second optical module receiving the data stream sent back from the first optical module; and a step of performing fault location based on the response information of the setting information and / or the returned data stream, wherein the second optical module is located in the active WDM device and the first optical module is located in the AAU.

[0013] In an embodiment, the step of the second optical module sending the setting information to the first optical module includes the step of the control unit of the second optical module receiving a loopback setting command sent from the main control unit, and loading the setting information according to the command and then sending it to the first optical module.

[0014] In an embodiment, the configuration information is low frequency OAM information.

[0015] In an embodiment, the step of confirming the completion of loopback based on the response information of the setting information includes the step of demodulating the response information by the control unit after the second optical module receives the response information of the setting information through the ROSA, and confirming the completion of loopback based on the response information.

[0016] In an embodiment, the response information to the configuration information is low frequency OAM information.

[0017] In an embodiment, the step of transmitting a data stream and receiving a returned data stream includes the steps of transmitting a control command based on the control unit and transmitting a data stream, and receiving the data stream looped back from the first optical module.

[0018] In an embodiment, the data stream is at a PRBS data rate.

[0019] In an embodiment, the PRBS data rate is the data stream in the optical module service offline detection information frame.

[0020] In an embodiment, the step of the second optical module performing fault location based on the response information of the configuration information and / or the returned data stream includes the steps of: if the second optical module does not receive the response information returned from the first optical module or cannot correctly demodulate the response information, there is a risk of fault in one or a combination of the transmission link between the active WDM transmission device and the AAU, the device, the AAU wireless device, and the optical module; if the second optical module receives the response information returned from the first optical module and can correctly demodulate it, there is connectivity between the transmission link between the active WDM transmission device and the AAU and the device; if there is no error code in the data stream sent and received by the second optical module, both the transmission link between the active WDM transmission device and the AAU and the device are normal; and if there is an error code in the data stream sent and received by the second optical module, there is performance degradation in the transmission link between the active WDM transmission device and the AAU and the device.

[0021] The method includes: a step in which one optical module receives setting information transmitted from a second optical module, the second optical module being located in an active WDM device and the first optical module being located in an AAU; a step in which the first optical module performs loopback setting according to the setting information and then returns response information to the setting information to confirm completion of the loopback setting, the response information being used by the second optical module to perform fault location based on the response information to the setting information; a step in which the first optical module receives a data stream transmitted from the second optical module; and a step in which the first optical module returns the data stream based on a loopback mechanism, so that the second optical module and / or the active WDM device perform fault location based on the returned data stream.

[0022] In an embodiment, the step of the first optical module receiving the configuration information transmitted by the second optical module based on the loopback mechanism includes the step of demodulating the configuration information by the control unit after the first optical module receives the configuration information via the ROSA.

[0023] In an embodiment, the configuration information is low frequency OAM information.

[0024] In an embodiment, after the first optical module performs loopback setting according to the setting information, the step of returning response information of the setting information includes the steps of: sending a loopback command to the CDR based on the demodulated setting information; the CDR performing a loopback operation on the line side according to the control unit command, and returning to the control unit to complete the execution; and the control unit loading the response information of the setting information and sending it to the second optical module via the TOSA.

[0025] In an embodiment, the response information to the configuration information is low frequency OAM information.

[0026] In an embodiment, the data stream is at a PRBS data rate.

[0027] In an embodiment, the PRBS data rate is the data stream in the optical module service offline detection information frame.

[0028] an optical module located in an active WDM device, the optical module comprising a processor and a transceiver, the processor reading a program in a memory, sending setting information to a first optical module, and / or sending a data stream to the first optical module after receiving response information from the first optical module, the response information being to configure the first optical module to realize loopback after the first optical module receives setting information from a second optical module, and sending response information to the second optical module to confirm completion of the loopback setting; receiving a data stream sent back from the first optical module, and performing fault location based on the response information to the setting information and / or the returned data stream; the second optical module being located in the active WDM device, the first optical module being located in an AAU, and the transceiver being configured to receive and transmit data under the control of the processor.

[0029] In an embodiment, the step of sending setting information to the first optical module includes the step of the control unit receiving a loopback setting instruction sent from the main control unit, and the step of loading the setting information according to the instruction and then sending it to the first optical module.

[0030] In an embodiment, the configuration information is low frequency OAM information.

[0031] In an embodiment, the step of confirming the completion of loopback based on the response information of the setting information includes the step of receiving the response information of the setting information via the ROSA, demodulating the response information by the control unit, and confirming the completion of loopback based on the response information.

[0032] In an embodiment, the response information to the configuration information is low frequency OAM information.

[0033] In an embodiment, the step of transmitting the data stream and receiving the returned data stream comprises: The method includes the steps of transmitting a control command based on the control unit and transmitting a data stream, and receiving the data stream looped back and transmitted from the first optical module.

[0034] In an embodiment, the data stream is at a PRBS data rate.

[0035] In an embodiment, the PRBS data rate is the data stream in the optical module service offline detection information frame.

[0036] In an embodiment, the step of performing fault location based on the response information of the configuration information and / or the returned data stream includes the steps of: if the second optical module does not receive the response information returned from the first optical module or cannot correctly demodulate the response information, there is a risk of fault in one or a combination of the transmission link between the active WDM transmission device and the AAU, the device, the AAU wireless device, and the optical module; if the second optical module can receive and correctly demodulate the response information returned from the first optical module, there is connectivity between the transmission link between the active WDM transmission device and the AAU and the device; if there is no error code in the data stream sent and received by the second optical module, both the transmission link between the active WDM transmission device and the AAU and the device are normal; and if there is an error code in the data stream sent and received by the second optical module, there is performance degradation in the transmission link between the active WDM transmission device and the AAU and the device.

[0037] An optical module located in an active WDM device, the optical module comprising: a second optical module transmitting module configured to send setting information to a first optical module and / or send a data stream to the first optical module after the second optical module receives response information from the first optical module, the response information being to configure the first optical module to realize loopback after the first optical module receives the setting information from the second optical module and send response information to the second optical module to confirm completion of the loopback setting; a second optical module receiving module configured to receive a data stream sent back from the first optical module; and a second optical module positioning module configured to perform fault location based on the response information to the setting information and / or the returned data stream, wherein the second optical module is located in an active WDM device and the first optical module is located in an AAU.

[0038] In an embodiment, the second optical module transmitting module is configured to transmit setting information to the first optical module, and includes the control unit receiving a loopback setting instruction transmitted from the main control unit, and transmitting the setting information to the first optical module after loading it according to the instruction.

[0039] In an embodiment, the second optical module transmitting module is configured to transmit the setting information of the low frequency OAM information.

[0040] In an embodiment, the second optical module transmitting module is configured to confirm the completion of loopback through the response information of the setting information, and includes receiving the response information of the setting information through the ROSA, demodulating the response information by the control unit, and confirming the completion of loopback based on the response information.

[0041] In an embodiment, the second optical module transmitting module is configured to receive response information of the setting information of the low frequency OAM information.

[0042] In an embodiment, the second optical module transmitting module is configured to transmit a data stream and receive a returned data stream, and includes transmitting a control instruction based on the control unit to transmit a data stream, and receiving the data stream transmitted in a loopback from the first optical module.

[0043] In an embodiment, the second optical module transmitting module is configured to transmit a data stream at a PRBS data rate.

[0044] In an embodiment, the second optical module transmitting module is configured to transmit the data stream in an optical module service offline detection information frame.

[0045] In an embodiment, the second optical module positioning module is configured to perform fault location based on the response information of the configuration information and / or the returned data stream, and includes: if the second optical module does not receive the response information returned from the first optical module or cannot correctly demodulate the response information, there is a risk of fault in one or a combination of the transmission link between the active WDM transmission device and the AAU, the device, the AAU wireless device, and the optical module; if the second optical module can receive and correctly demodulate the response information returned from the first optical module, the transmission link between the active WDM transmission device and the AAU and the device have connectivity; if there is no error code in the data stream sent and received by the second optical module, both the transmission link between the active WDM transmission device and the AAU and the device are normal; and if there is an error code in the data stream sent and received by the second optical module, there is performance degradation in the transmission link between the active WDM transmission device and the AAU and the device.

[0046] an optical module located in an AAU, the optical module comprising a processor and a transceiver, configured to read a program in a memory, receive setting information transmitted from a second optical module, the second optical module being located in an active WDM device, the first optical module being located in the AAU, perform loopback setting according to the setting information, and then return response information to the setting information to confirm completion of the loopback setting, the response information being used by the second optical module to perform fault location based on the response information to the setting information; receive a data stream transmitted from the second optical module, return the data stream based on a loopback mechanism, and the second optical module and / or the active WDM device perform a process of performing fault location based on the returned data stream, the transceiver being configured to receive and transmit data under the control of the processor.

[0047] In an embodiment, receiving the configuration information transmitted by the second optical module based on the loopback mechanism includes demodulating the configuration information by the control unit after receiving the configuration information via the ROSA.

[0048] In an embodiment, the configuration information is low frequency OAM information.

[0049] In an embodiment, after performing loopback setting according to the setting information, returning response information of the setting information includes: sending a loopback command to the CDR based on the demodulated setting information; the CDR performing a line-side loopback operation according to the control unit command and returning to the control unit to complete the execution; and the control unit loading the response information of the setting information and sending it to the second optical module via the TOSA.

[0050] In an embodiment, the response information to the configuration information is low frequency OAM information.

[0051] In an embodiment, the data stream is at a PRBS data rate.

[0052] In an embodiment, the PRBS data rate is the data stream in the optical module service offline detection information frame.

[0053] an optical module located in an AAU, the optical module comprising: a first optical module receiving module configured to receive setting information transmitted from a second optical module, the second optical module being located in an active WDM device, the first optical module being located in the AAU; and a first optical module transmitting module configured to, after performing loopback setting according to the setting information, return response information of the setting information to confirm completion of the loopback setting, the response information being used by the second optical module to perform fault location based on the response information of the setting information; wherein the first optical module receiving module is further configured to receive a data stream transmitted from the second optical module, and the first optical module transmitting module is further configured to return the data stream based on a loopback mechanism, so that the second optical module and / or the active WDM device perform fault location based on the returned data stream.

[0054] In an example embodiment, the first optical module receiving module is configured to receive the configuration information transmitted by the second optical module based on a loopback mechanism, including demodulating the configuration information by the control unit after receiving the configuration information via the ROSA.

[0055] In an embodiment, the first optical module receiving module is configured to receive configuration information of low frequency OAM information.

[0056] In an embodiment, after the first optical module transmitting module performs loopback setting according to the setting information, returning response information of the setting information includes: sending a loopback command to the CDR based on the demodulated setting information; the CDR performing a loopback operation on the line side according to the control unit command and returning to the control unit to complete the execution; and the control unit loading the response information of the setting information and sending it to the second optical module via the TOSA.

[0057] In an embodiment, the first optical module transmitting module is configured to set response information of the setting information of the low-frequency OAM information.

[0058] In an embodiment, the first optical module receiving module is configured to receive a data stream at a PRBS data rate.

[0059] In an embodiment, the first optical module receiving module is configured to receive a data stream in an optical module service offline detection information frame.

[0060] A computer-readable storage medium stores a computer program for executing the above-described obstacle location method.

[0061] The present application has the following beneficial effects: In the context that the semi-active system is expected to become the mainstream solution for 5GC-RAN fronthaul, there is still no solution for how to define faults in wireless and transmission devices. In the technical solution provided by the embodiments of this application, the second optical module transmits information based on a loopback mechanism, so that fault location can be performed based on the information returned from the first optical module, thereby supporting fault definition in wireless and transmission devices.

[0062] Preferably, the information provided for fault location includes OAM information, loopback setting messages, PRBS data rates, and service offline detection messages.

[0063] Preferably, the rapid removal of obstacles in the management and control system can reduce labor costs, shorten the removal time, improve the system management and operation capabilities, and improve the reliability of the 5G fronthaul network. [Brief explanation of the drawings]

[0064] The drawings described herein are used to provide a further understanding of the present application, which constitutes a part of the present application, and the schematic examples of the present application and the description thereof are used to explain the present application and do not constitute undue limitations on the present application. [Figure 1] 1 is a schematic diagram of an active WDM / OTN transmission system in the background art. [Figure 2] 1 is a schematic diagram of a passive WDM transmission system in the background art; [Figure 3] 1 is a schematic diagram of a semi-active Open-WDM transmission system in the background art; [Figure 4] 1 is a schematic diagram of an execution flow of a fault location method on an active WDM device side in an embodiment of the present application; [Figure 5] 1 is a schematic diagram of the execution flow of an AAU-side fault location method in an embodiment of the present application; [Figure 6] FIG. 1 is a schematic diagram of the background of fault location for a 5GC-RAN fronthaul network in an embodiment of the present application. [Figure 7] FIG. 1 is a schematic diagram of the architecture of a first optical module in an embodiment of the present application; [Figure 8] FIG. 10 is a schematic diagram of a second optical module and a core unit in an active device in an embodiment of the present application. [Figure 9] 1 is a schematic diagram of an optical module structure 1 in an embodiment of the present application. [Figure 10]1 is a schematic diagram of an optical module structure 2 in an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0065] In the embodiments of this application, a fault location scheme for 5GC-RAN fronthaul networks is proposed to support fault definition of radio and transmission devices and improve system management and operation capabilities.

[0066] Specific embodiments of the present application will be described below with reference to the drawings.

[0067] In the description, the implementation of the second optical module located in the AAU and the first optical module located in the active WDM device will be described. This description does not mean that the two should be implemented in cooperation with each other or independently. In fact, when they are implemented separately, each can solve its own problems, and when they are used together, better technical effects can be achieved.

[0068] FIG. 4 is a schematic diagram of the execution flow of the fault location method on the active WDM device side, which can include the following steps 401 to 403, as shown in the figure.

[0069] In step 401, the second optical module sends setting information to the first optical module, and / or the second optical module sends a data stream to the first optical module after receiving the response information of the first optical module, where the response information is to configure the first optical module to realize loopback after the first optical module receives the setting information of the second optical module, and send response information to the second optical module to confirm the completion of the loopback setting.

[0070] In step 402, the second optical module receives the data stream sent back from the first optical module.

[0071] In step 403, fault location is performed based on the response information of the configuration information and / or the returned data stream.

[0072] The second optical module is located in the active WDM device, and the first optical module is located in the AAU.

[0073] FIG. 5 is a schematic diagram of the execution flow of the fault location method on the AAU side, which can include the following steps 501 to 504 as shown in the figure.

[0074] In step 501, the first optical module receives the configuration information sent from the second optical module, where the second optical module is located in the active WDM device and the first optical module is located in the AAU.

[0075] In step 502, after the first optical module performs loopback setting according to the setting information, it returns response information to the setting information to confirm the completion of the loopback setting, and the response information is used by the second optical module to perform fault location based on the response information to the setting information.

[0076] In step 503, the first optical module receives the data stream transmitted from the second optical module.

[0077] In step 504, the first optical module returns the data stream based on a loopback mechanism so that the second optical module and / or the active WDM device performs fault location based on the returned data stream.

[0078] The related devices are described below.

[0079] Figure 6 is a schematic diagram of the background of fault location for 5GC-RAN fronthaul networks. The schematic diagram of the implementation environment of this fault location solution for 5GC-RAN fronthaul networks, as shown in Figure 6, is composed of a first optical module of an AAU, a multiplexer on the AAU side, a multiplexer on the DU side, and an active WDM device on the DU side.

[0080] FIG. 7 is a schematic diagram of the architecture of the first optical module. As shown in the figure, the first optical module may include a core unit that may be composed of a TOSA (Transmitter Optical Subassembly), a ROSA (Receiver Optical Subassembly), a control unit, and a CDR (Clock and Data Recovery), etc. The architecture is shown in FIG. 7. The control unit supports loading and extracting low-frequency management control information, reading register information in the optical module, and controlling the CDR, and the CDR supports loopback on the line side.

[0081] FIG. 8 is a schematic diagram of a second optical module and core unit in an active device. As shown in the figure, the active WDM device can be equipped with a second optical module consisting of a PRBS (Pseudo Random Binary Sequence) processing unit (optional), a main control unit, etc., the architecture of which is shown in FIG. 8. The core unit of the second optical module consists of a TOSA, a ROSA, a control unit, a CDR, etc. The control unit of the second optical module supports loading and extracting low-frequency management control information and reading register information, while the main control unit supports sending control commands, sending PRBS data streams, and comparing PRBS transmission and reception.

[0082] In an embodiment, the step of the second optical module sending the setting information to the first optical module includes the step of the control unit of the second optical module receiving a loopback setting command sent from the main control unit, and loading the setting information according to the command and then sending it to the first optical module.

[0083] In a specific embodiment, the configuration information is low frequency OAM information.

[0084] Specifically, the main control unit sends a far-end optical module (first optical module) loopback command to the second optical module, and upon receiving the command, the control unit of the second optical module searches the register, loads the low-frequency OAM information, and sends it to the first optical module.

[0085] The local end sends the loopback setting to the far end optical module (first optical module), and the local end optical module (second optical module) sends the loopback setting message format to the far end, which can be shown in Table 1 below. [Table 1]

[0086] In an embodiment, the method includes a step of confirming completion of loopback for the second optical module based on response information of the setting information, and the step includes a step of demodulating the response information by the control unit after the second optical module receives the response information of the setting information via the ROSA, and confirming completion of loopback based on the response information.

[0087] In an embodiment, for a first optical module, the first optical module includes a step of receiving configuration information transmitted by a second optical module based on a loopback mechanism, and the step includes a step of demodulating the configuration information by a control unit after the first optical module receives the configuration information via the ROSA.

[0088] In an embodiment, after the first optical module performs loopback setting according to the setting information, the step of returning response information of the setting information includes the steps of: sending a loopback command to the CDR based on the demodulated setting information; the CDR performing a loopback operation on the line side according to the control unit command, and returning to the control unit to complete the execution; and the control unit loading the response information of the setting information and sending it to the second optical module via the TOSA.

[0089] In a specific embodiment, the response information to the configuration information is low frequency OAM information.

[0090] Specifically, after receiving the low-frequency OAM information through the ROSA, the control unit demodulates it, searches the register, and sends a loopback command to the CDR. The CDR performs a line-side loopback operation according to the control unit command and returns to the control unit to complete the operation. The control unit then finds the register, loads the low-frequency OAM information, and sends it to the second optical module through the TOSA. After receiving the second optical module through the ROSA, the control unit demodulates the low-frequency OAM information, searches the register, and confirms the completion of loopback.

[0091] The far end may refer to Table 2 for the loopback configuration feedback message format. [Table 2]

[0092] In an embodiment, the step of transmitting a data stream and receiving a returned data stream includes the steps of transmitting a control command based on the control unit and transmitting a data stream, and receiving the data stream looped back from the first optical module.

[0093] In a specific embodiment, the data stream is at a PRBS data rate.

[0094] In a specific embodiment, the PRBS data rate is the data stream in the optical module service offline detection information frame.

[0095] Specifically, the control unit sends control commands, transmits a PRBS data rate, and compares the transmitted and received PRBS after it is looped back from the first optical module to determine the link quality. When the AAU side far-end optical module (first optical module) external loop is set, the near-end DU side optical module (second optical module) sends a service offline detection message, which is looped back and then returned to the DU side optical module (second optical module) and the system side for detection. The set optical module service offline detection information frame format can be as shown in Table 3. [Table 3]

[0096] The execution of fault location for the second optical module will now be described.

[0097] In an embodiment, the step of the second optical module performing fault location based on the response information of the configuration information and / or the returned data stream includes the steps of: if the second optical module does not receive the response information returned from the first optical module or cannot correctly demodulate the response information, there is a risk of fault in one or a combination of the transmission link between the active WDM transmission device and the AAU, the device, the AAU wireless device, and the optical module; if the second optical module receives the response information returned from the first optical module and can correctly demodulate it, there is connectivity between the transmission link between the active WDM transmission device and the AAU and the device; if there is no error code in the data stream sent and received by the second optical module, both the transmission link between the active WDM transmission device and the AAU and the device are normal; and if there is an error code in the data stream sent and received by the second optical module, there is performance degradation in the transmission link between the active WDM transmission device and the AAU and the device.

[0098] Specifically, after the main control unit receives the far-end optical module (first optical module) loopback command, if the second optical module does not receive the OAM information returned from the first optical module or cannot correctly demodulate the OAM information, there is a risk of fault in both the transmission link and device between the DU-side active WDM transmission device and the AAU, and the AAU wireless device and optical module, and other cooperation methods can be used to jointly identify the fault point.

[0099] After the main control unit receives the far-end optical module (first optical module) loopback command, if the second optical module receives and correctly demodulates the OAM information returned by the first optical module, the transmission link between the DU-side active WDM transmission device and the AAU and the device have connectivity. The main control unit of the active WDM transmission device sends and compares the received PRBS data rate, and uses the same data rate as the original wireless service (e.g., 25G). If there is no error code, both the transmission link between the DU-side active WDM transmission device and the AAU and the device are normal, and the fault may be in the AAU wireless device. If there is a certain error code, the transmission link between the DU-side active WDM transmission device and the AAU and the device have performance degradation, and the transmission maintenance personnel can use other cooperation methods to jointly identify the fault.

[0100] Based on the concept of the same application, the embodiments of the present application further provide an optical module and a computer-readable storage medium. The problem-solving principles of these devices are similar to those of the fault location method, so the implementation of these devices can refer to the implementation of the method, and the overlapping points will be omitted.

[0101] When implementing the technical solutions provided by the embodiments of the present application, they can be implemented in the following manner.

[0102] FIG. 9 is a schematic diagram of an optical module structure 1, which is located in an active WDM transmission device. As shown in the figure, the optical module includes a processor 900 and a transceiver 910. The processor 900 is configured to read a program in a memory 920, send configuration information to a first optical module, and / or send a data stream to the first optical module after receiving response information from the first optical module, the response information being for configuring the first optical module to implement loopback after the first optical module receives the configuration information from a second optical module, and send response information to the second optical module to confirm the completion of the loopback configuration, receive the data stream sent back from the first optical module, and perform a process of fault location based on the response information to the configuration information and / or the returned data stream, where the second optical module is located in the active WDM device, the first optical module is located in the AAU, and the transceiver 910 is configured to receive and transmit data under the control of the processor 900.

[0103] In an embodiment, sending setting information to the first optical module includes: the control unit receiving a loopback setting instruction sent from the main control unit; loading the setting information according to the instruction, and then sending it to the first optical module.

[0104] In an embodiment, the configuration information is low frequency OAM information.

[0105] In an embodiment, confirming the completion of loopback through the response information of the setting information includes receiving the response information of the setting information through the ROSA, demodulating the response information by the control unit, and confirming the completion of loopback based on the response information.

[0106] In an embodiment, the response information to the configuration information is low frequency OAM information.

[0107] In an embodiment, transmitting the data stream and receiving the returned data stream includes transmitting a control command based on the control unit to transmit the data stream, and receiving the data stream transmitted in a loopback manner from the first optical module.

[0108] In an embodiment, the data stream is at a PRBS data rate.

[0109] In an embodiment, the PRBS data rate is the data stream in the optical module service offline detection information frame.

[0110] In an embodiment, performing fault location based on the response information of the configuration information and / or the returned data stream includes: if the second optical module does not receive the response information returned from the first optical module or cannot correctly demodulate the response information, there is a risk of fault in one or a combination of the transmission link between the active WDM transmission device and the AAU, the device, the AAU wireless device, and the optical module; if the second optical module can receive and correctly demodulate the response information returned from the first optical module, the transmission link between the active WDM transmission device and the AAU and the device have connectivity; if there is no error code in the data stream sent and received by the second optical module, both the transmission link between the active WDM transmission device and the AAU and the device are normal; and if there is an error code in the data stream sent and received by the second optical module, there is performance degradation in the transmission link between the active WDM transmission device and the AAU and the device.

[0111] 9, the bus architecture may include any number of interconnected buses and bridges, specifically linking one or more processors, represented by processor 900, with various circuits of memory, represented by memory 920. The bus architecture may also link various other circuits, such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and will not be further described herein. A bus interface provides the interface. A transceiver 910 may be multiple elements including a transmitter and a receiver that provide the unit for communicating with various other devices over a transmission medium. The processor 900 is responsible for managing the bus architecture and general processing, while the memory 920 may store data used by the processor 900 in performing operations.

[0112] An embodiment of the present application further provides an optical module located in an active WDM device, comprising: a second optical module transmitting module configured to send configuration information to a first optical module and / or send a data stream to the first optical module after the second optical module receives response information from the first optical module, wherein the response information is to configure the first optical module to realize loopback after the first optical module receives the configuration information of the second optical module, and to send response information to the second optical module to confirm the completion of the loopback configuration; a second optical module receiving module configured to receive a data stream sent back from the first optical module; and a second optical module positioning module configured to perform fault location based on the response information of the configuration information and / or the returned data stream, wherein the second optical module is located in the active WDM device and the first optical module is located in the AAU.

[0113] In an embodiment, the second optical module transmitting module is configured to transmit setting information to the first optical module, and includes the control unit receiving a loopback setting instruction transmitted from the main control unit, and transmitting the setting information to the first optical module after loading it according to the instruction.

[0114] In an embodiment, the second optical module transmitting module is configured to transmit the setting information of the low frequency OAM information.

[0115] In an embodiment, the second optical module transmitting module is configured to confirm the completion of loopback through the response information of the setting information, and includes receiving the response information of the setting information through the ROSA, demodulating the response information by the control unit, and confirming the completion of loopback based on the response information.

[0116] In an embodiment, the second optical module transmitting module is configured to receive response information of the setting information of the low frequency OAM information.

[0117] In an embodiment, the second optical module transmitting module is configured to transmit a data stream and receive a returned data stream, and includes transmitting a control instruction based on the control unit to transmit a data stream, and receiving the data stream transmitted in a loopback from the first optical module.

[0118] In an embodiment, the second optical module transmitting module is configured to transmit a data stream at a PRBS data rate.

[0119] In an embodiment, the second optical module transmitting module is configured to transmit the data stream in an optical module service offline detection information frame.

[0120] In an embodiment, the second optical module positioning module is configured to perform fault location based on the response information of the configuration information and / or the returned data stream, and includes: if the second optical module does not receive the response information returned from the first optical module or cannot correctly demodulate the response information, there is a risk of fault in one or a combination of the transmission link between the active WDM transmission device and the AAU, the device, the AAU wireless device, and the optical module; if the second optical module can receive and correctly demodulate the response information returned from the first optical module, the transmission link between the active WDM transmission device and the AAU and the device have connectivity; if there is no error code in the data stream sent and received by the second optical module, both the transmission link between the active WDM transmission device and the AAU and the device are normal; and if there is an error code in the data stream sent and received by the second optical module, there is performance degradation in the transmission link between the active WDM transmission device and the AAU and the device.

[0121] For ease of explanation, the above-mentioned devices are described as functionally divided into various modules or units. Of course, when implementing this application, the functions of each module or unit may be implemented by the same or multiple pieces of software or hardware.

[0122] FIG. 10 is a schematic diagram of an optical module structure 2, which is located in the AAU. As shown in the figure, the optical module includes a processor 1000 and a transceiver 1010. The processor 1000 is configured to read a program in a memory 1020, receive setting information sent from a second optical module, the second optical module being located in the active WDM device, and the first optical module being located in the AAU, perform loopback setting according to the setting information, and then return response information to the setting information to confirm the completion of the loopback setting, and the response information is used by the second optical module to perform fault location based on the response information of the setting information; receive a data stream sent from the second optical module, return the data stream based on the loopback mechanism, and the second optical module and / or the active WDM device perform a process of fault location based on the returned data stream; and the transceiver 1010 is configured to receive and transmit data under the control of the processor 1000.

[0123] In an embodiment, receiving the configuration information transmitted by the second optical module based on the loopback mechanism includes demodulating the configuration information by the control unit after receiving the configuration information via the ROSA.

[0124] In an embodiment, the configuration information is low frequency OAM information.

[0125] In an embodiment, after performing loopback setting according to the setting information, returning response information of the setting information includes: sending a loopback command to the CDR based on the demodulated setting information; the CDR performing a line-side loopback operation according to the control unit command and returning to the control unit to complete the execution; and the control unit loading the response information of the setting information and sending it to the second optical module via the TOSA.

[0126] In an embodiment, the response information to the configuration information is low frequency OAM information.

[0127] In an embodiment, the data stream is at a PRBS data rate.

[0128] In an embodiment, the PRBS data rate is the data stream in the optical module service offline detection information frame.

[0129] 10, the bus architecture may include any number of interconnected buses and bridges, specifically linking one or more processors, represented by processor 1000, with various circuits of memory, represented by memory 1020. The bus architecture may also link various other circuits, such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and will not be further described herein. A bus interface provides the interface. A transceiver 1010 may be multiple elements including a transmitter and a receiver that provide a unit for communicating with various other devices over a transmission medium. The processor 1000 is responsible for managing the bus architecture and general processing, and the memory 1020 may store data used by the processor 1000 in performing operations.

[0130] An embodiment of the present application further provides an optical module located in the AAU, comprising: a first optical module receiving module configured to receive configuration information transmitted from a second optical module, where the second optical module is located in an active WDM device and the first optical module is located in the AAU; and a first optical module transmitting module configured to, after performing loopback configuration according to the configuration information, return response information of the configuration information to confirm completion of the loopback configuration, where the response information is used by the second optical module to perform fault location based on the response information of the configuration information; wherein the first optical module receiving module is further configured to receive a data stream transmitted from the second optical module, and the first optical module transmitting module is further configured to return the data stream based on a loopback mechanism, so that the second optical module and / or the active WDM device perform fault location based on the returned data stream.

[0131] In an embodiment, the first optical module receiving module is configured to receive the setting information transmitted by the second optical module based on a loopback mechanism, and includes demodulating the setting information by the control unit after receiving the setting information via the ROSA.

[0132] In an embodiment, the first optical module receiving module is configured to receive configuration information of low frequency OAM information.

[0133] In an embodiment, the first optical module transmitting module is configured to return response information of the setting information after performing loopback setting according to the setting information, and includes the steps of: sending a loopback command to the CDR based on the demodulated setting information; the CDR performing a line-side loopback operation according to the control unit command, and returning to the control unit to complete the execution; and the control unit loading the response information of the setting information and sending it to the second optical module via the TOSA.

[0134] In an embodiment, the first optical module transmitting module is configured to set response information of the setting information of the low-frequency OAM information.

[0135] In an embodiment, the first optical module receiving module is configured to receive a data stream at a PRBS data rate.

[0136] In an embodiment, the first optical module receiving module is configured to receive a data stream in an optical module service offline detection information frame.

[0137] For ease of explanation, the above-mentioned devices are described as functionally divided into various modules or units. Of course, when implementing this application, the functions of each module or unit may be implemented by the same or multiple pieces of software or hardware.

[0138] An embodiment of the present application further provides a computer-readable storage medium, which stores a computer program for executing the above obstacle location method.

[0139] A specific embodiment may refer to the implementation of the fault location method in the second optical module located in the active WDM device and / or the first optical module located in the AAU.

[0140] As described above, under the background that the semi-active system is expected to become the mainstream solution for 5G C-RAN fronthaul, there is still no solution for how to define faults in wireless and transmission devices. The technical solution provided by the embodiments of this application supports fault definition in wireless and transmission devices, and enables the management and control system to quickly remove faults, thereby reducing labor costs, shortening the time for removing faults, improving the system management and operation capabilities, and improving the reliability of the 5G fronthaul network.

[0141] Those skilled in the art will appreciate that the embodiments of the present application may be provided as a method, a system, or a computer program product. Thus, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present application may take the form of a computer program product embodied in a computer-usable storage medium (including, but not limited to, a magnetic disk memory, an optical memory, etc.) containing one or more computer-usable program codes.

[0142] The present application has been described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and combinations of flows and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate an apparatus in which the instructions, executed by the processor of the computer or other programmable data processing device, are used to implement the functions specified in one or more flows in the flowcharts and / or one or more blocks in the block diagrams.

[0143] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to operate in a particular manner to produce an article of manufacture that includes an instruction apparatus that implements the functions specified in one or more flows of the flowcharts and / or one or more blocks of the block diagrams, the instructions stored in the computer-readable memory.

[0144] These computer program instructions can also be loaded into a computer or other programmable data processing device and executed on the computer or other programmable device to perform a series of operational steps to produce a computer-implemented process, such that the instructions executing on the computer or other programmable device provide steps for implementing the functions specified in one or more flows of the flowcharts and / or one or more blocks of the block diagrams.

[0145] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. a step of a second optical module sending configuration information to a first optical module, the second optical module receiving response information sent from the first optical module, and determining a location of a fault based on the response information of the configuration information, wherein the response information configures the first optical module to implement loopback after the first optical module receives the configuration information of the second optical module, and sends response information to the second optical module confirming completion of loopback configuration; and / or a step of: after the second optical module receives the response information of the first optical module, sending a data stream to the first optical module; the second optical module receiving the data stream sent back from the first optical module; and determining the location of a fault based on the sent back data stream, wherein the response information configures the first optical module to realize loopback after the first optical module receives the setting information of the second optical module; and sending response information to the second optical module to confirm the completion of loopback setting; Including, the second optical module is located in an active wavelength division multiplexing (WDM) device, and the first optical module is located in an active antenna unit (AAU); determining a location of a fault by the second optical module based on response information of the configuration information and / or the returned data stream; If the second optical module does not receive the response information returned from the first optical module or does not correctly demodulate the response information, there is a risk of failure in one or a combination of the transmission link between the active WDM transmission device and the AAU, the device, the AAU wireless device, the optical module; If the second optical module receives and correctly demodulates the response information returned from the first optical module, the transmission link between the active WDM transmission device and the AAU and the device have connectivity; If there is no error code in the data stream transmitted and received by the second optical module, both the transmission link between the active WDM transmission device and the AAU and the device are normal; If there is an error code in the data stream transmitted and received by the second optical module, there is a performance degradation in the transmission link and device between the active WDM transmission device and the AAU; An obstacle location method including:

2. a step of confirming completion of the loopback based on response information of the setting information; 2. The fault location method according to claim 1, further comprising the step of: after the second optical module receives response information of the setting information through an optical receiving subassembly (ROSA), demodulating the response information by a control unit, and confirming completion of loopback based on the response information.

3. The fault location method according to claim 2 , wherein the response information to the setting information is low-frequency operation, administration, and maintenance (OAM) information.

4. The steps of transmitting a data stream and receiving a returned data stream include: transmitting a control command based on the control unit and transmitting a data stream; receiving a data stream looped back from the first optical module; The fault location method according to claim 1 , comprising:

5. 5. The fault location method of claim 4, wherein the data stream is at a pseudo-random binary sequence (PRBS) data rate.

6. The fault location method according to claim 5, wherein the PRBS data rate is a data stream in an optical module service offline detection information frame.

7. The step of transmitting the setting information from the second optical module to the first optical module includes: a control unit of the second optical module receiving a loopback setting command sent from a main control unit; Loading the setting information according to the instruction and then transmitting it to the first optical module; The fault location method according to claim 1 , comprising:

8. The fault location method according to claim 7, wherein the setting information is low-frequency OAM information.

9. a step of receiving configuration information transmitted from a second optical module by a first optical module, the second optical module being located in an active WDM device and the first optical module being located in an AAU; a step of returning response information to the setting information after the first optical module has performed loopback setting according to the setting information to confirm completion of the loopback setting, the response information being used by the second optical module to determine a fault location based on the response information to the setting information; receiving a data stream transmitted by the first optical module from the second optical module; the first optical module returning a data stream based on a loopback mechanism such that the second optical module and / or the active WDM device determines the location of the fault based on the returned data stream; An obstacle location method including:

10. The step of receiving the setting information transmitted from the second optical module by the first optical module includes: The fault location method according to claim 9, further comprising the step of demodulating the setting information by a control unit after the first optical module receives the setting information via the ROSA.

11. The fault location method according to claim 10, wherein the setting information is low-frequency OAM information.

12. The step of returning response information to the setting information after the first optical module has performed loopback setting in accordance with the setting information includes: sending a loopback command to the CDR based on the demodulated configuration information; the CDR performs a line-side loopback operation according to the control unit command and returns to the control unit to complete the execution; The control unit loads response information of the setting information and sends it to the second optical module via the TOSA; The fault location method according to claim 9, comprising:

13. The fault location method according to claim 12, wherein the response information to the setting information is low-frequency OAM information.

14. 10. The fault location method according to claim 9, wherein the data stream is at a PRBS data rate.

15. The fault location method according to claim 14, wherein the PRBS data rate is a data stream in an optical module service offline detection information frame.

16. An optical module, Located in an active WDM device, the optical module comprises a processor and a transceiver; the processor reads a program in memory; Sending configuration information to a first optical module, a second optical module receiving response information sent from the first optical module, determining the location of the fault based on the response information of the configuration information, the response information configuring the first optical module to implement loopback after the first optical module receives the configuration information of the second optical module, and sending response information to the second optical module confirming the completion of loopback configuration; and / or After receiving the response information of the first optical module, send a data stream to the first optical module; the second optical module receives the data stream sent back from the first optical module and determines the location of a fault based on the sent back data stream; the response information is configured to configure the first optical module to realize loopback after the first optical module receives the setting information of the second optical module, and send response information to the second optical module to confirm the completion of loopback setting; the second optical module is located in an active WDM device, and the first optical module is located in an AAU; the transceiver is configured to receive and transmit data under control of the processor; determining the location of the fault based on the response information of the configuration information and / or the returned data stream; If the second optical module does not receive the response information returned from the first optical module or does not correctly demodulate the response information, there is a risk of failure in one or a combination of the transmission link between the active WDM transmission device and the AAU, the device, the AAU wireless device, the optical module; If the second optical module receives and correctly demodulates the response information returned from the first optical module, the transmission link between the active WDM transmission device and the AAU and the device have connectivity; If there is no error code in the data stream sent and received by the second optical module, both the transmission link between the active WDM transmission device and the AAU and the device are normal; If there is an error code in the data stream transmitted and received by the second optical module, there is performance degradation in the transmission link and device between the active WDM transmission device and the AAU.

17. An optical module, Located in an active WDM device, a second optical module transmitting module configured to send setting information to a first optical module and / or send a data stream to the first optical module after the second optical module receives response information of the first optical module, wherein the response information configures the first optical module to realize loopback after the first optical module receives the setting information of the second optical module, and sends response information to the second optical module to confirm completion of loopback setting; a second optical module receiving module configured to receive the data stream sent back from the first optical module; a second optical module positioning module configured to determine the location of the fault based on the response information of the configuration information and / or the returned data stream; Equipped with the second optical module is located in an active WDM device, and the first optical module is located in an AAU; The second optical module positioning module, If the second optical module does not receive the response information returned from the first optical module or does not correctly demodulate the response information, there is a risk of failure in one or a combination of the transmission link between the active WDM transmission device and the AAU, the device, the AAU wireless device, the optical module; If the second optical module receives and correctly demodulates the response information returned from the first optical module, the transmission link between the active WDM transmission device and the AAU and the device have connectivity; If there is no error code in the data stream sent and received by the second optical module, both the transmission link between the active WDM transmission device and the AAU and the device are normal; The optical module is configured such that if there is an error code in the data streams transmitted and received by the second optical module, there is a performance degradation in the transmission link and device between the active WDM transmission device and the AAU.

18. An optical module, Located in an AAU, the optical module comprises a processor and a transceiver; the processor reads a program in memory; receiving configuration information transmitted from a second optical module, the second optical module being located in an active WDM device and the first optical module being located in an AAU; After performing the loopback setting according to the setting information, return response information to the setting information to confirm completion of the loopback setting, and the response information is used by the second optical module to determine the location of a fault based on the response information to the setting information; receiving a data stream transmitted from the second optical module; returning a data stream based on a loopback mechanism, and the second optical module and / or active WDM device configured to perform a process for determining the location of a fault based on the returned data stream; An optical module in which the transceiver is configured to receive and transmit data.

19. An optical module, Located in AAU, a first optical module receiving module configured to receive configuration information transmitted from a second optical module, wherein the second optical module is located in an active WDM device and the first optical module is located in an AAU; a first optical module transmitting module configured to, after performing a loopback setting according to the setting information, return response information to the setting information to confirm completion of the loopback setting, wherein the response information is used by the second optical module to determine a fault location based on the response information to the setting information; Equipped with the first optical module receiving module is further configured to receive the data stream transmitted from the second optical module; The optical module, wherein the first optical module transmitting module is further configured to return a data stream based on a loopback mechanism so that the second optical module and / or active WDM device determines the location of a fault based on the returned data stream.

20. A computer-readable storage medium storing a computer program for executing the fault location method according to any one of claims 1 to 15.

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