A method for OLT to automatically adapt optical modules

Abstract

The application provides a method for OLT to automatically adapt optical modules, which first builds a PON optical module network; registers all ONU devices to OLT devices in batches by using initial optical module types to obtain initial total registration time; introduces a new type of PON optical module in the PON optical module network; obtains secondary total registration time corresponding to each initial type after introducing the new type by polling all initial optical module types; compares the smallest secondary total registration time with the initial total registration time to confirm the optimal initial optical module type and record it in the OLT device; if all initial optical module types do not reach the expectation, parameter tuning is performed until the requirement is met; the application can enable the OLT device to automatically and efficiently adapt to the new optical module type, realize fast, stable and non-packet-loss batch registration of the ONU device, save time and effort, and avoid some mistakes caused by manual testing.

Description

Technical Field

[0001] This invention relates to the fields of optical communication and PON technology, and more specifically, to a method for automatic adaptation of optical modules by an OLT. Background Technology

[0002] PON (Passive Optical Network) technology is a point-to-multipoint optical access technology, mainly including EPON (Ethernet Passive Optical Network), GPON (Gigabit Passive Optical Network), XG-PON, and XGS-PON. A PON system typically consists of an OLT (Optical Line Terminal), an ODN (Optical Distribution Network), and multiple ONUs (Optical Network Units).

[0003] Currently, while there are many PON optical module manufacturers, differences in design among them necessitate that OLT manufacturers specify certain optical module models as standard configurations when selling their products. Modules not on this list are not supported to avoid issues such as instability and packet loss during batch registration. When a new optical module type is introduced into the OLT equipment, it can easily cause instability, slow registration, and packet loss during batch registration of ONUs in the PON system. In such cases, it's necessary to adjust the optical module type of the PON chip to adapt to the new module, selecting the optimal type from the existing options to ensure normal batch registration of ONUs. However, this approach is highly inflexible. Even after adjustment, if a new PON optical module type is introduced again, the OLT manufacturer still needs to conduct another round of complex testing and verification, re-determining the optimal type before formal implementation—a time-consuming, labor-intensive, and highly inefficient process.

[0004] Existing technology discloses an automatic detection and configuration method and system for PON optical modules, and a storage medium thereof, including: when an optical module is inserted into the interface of an ONU, reading the module information of the optical module; determining the WAN type supported by the optical module based on the module information; obtaining the corresponding PON configuration parameters based on the WAN type, and performing PON configuration on the optical module based on the PON configuration parameters; delaying for a preset time to obtain the synchronization status of the ONU and the OLT connected to it; verifying whether the WAN type is correct based on the synchronization status; if so, the automatic configuration is considered successful; otherwise, the automatic configuration is considered to have failed. However, this existing technology can only solve the problem of not being able to automatically detect the type of optical module and perform the corresponding PON configuration when an optical module is inserted into the ONU. It is only applicable to ONUs that have already been registered and PON systems that have already been configured. When a new type of PON optical module is introduced, manual debugging and configuration of the OLT is still required, which is inefficient. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, which requires manual debugging and configuration of the OLT when introducing new PON optical module types, resulting in time-consuming, labor-intensive, and inefficient processes, this invention provides a method for automatic OLT adaptation to optical modules. This method enables OLT devices to automatically and efficiently adapt to new optical module types, achieving fast, stable, and packet-free batch registration of ONU devices.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0007] This invention provides a method for automatic adaptation of optical modules by an OLT, comprising the following steps:

[0008] S1: Establish a PON optical module network;

[0009] The PON optical module network includes an OLT device, PON optical modules of the initial optical module type, and several ONU devices; the OLT device has several types of initial optical modules pre-set.

[0010] The OLT device connects to all ONU devices via a PON optical module;

[0011] S2: Based on the established PON optical module network, register all ONU devices to the OLT device in batches according to the initial optical module type, and obtain the total registration time of all ONU devices under the initial optical module type, which is recorded as the initial total registration time;

[0012] S3: In the PON optical module network, replace the PON optical module of the initial optical module type with a PON optical module of the new optical module type;

[0013] By polling all initial optical module types, the OLT device re-registers all ONU devices in batches for each initial optical module type, and obtains the total registration time for each initial optical module type after the introduction of the new optical module type, which is recorded as the secondary total registration time.

[0014] S4: Compare the minimum total secondary registration time with the initial total registration time to determine whether the preset first condition is met. If it is met, the OLT device saves the initial optical module type corresponding to the minimum total secondary registration time as the optimal optical module type and executes step S6; otherwise, execute step S5.

[0015] S5: Optimize the parameters of the initial optical module type corresponding to the minimum total secondary registration time, obtain the optimized initial optical module type, and save the optimized initial optical module type as the optimal optical module type. Then, proceed to step S6.

[0016] S6: The OLT device uses the optimal optical module type to register the ONU devices under the new optical module type in batches, thus completing the automatic adaptation of the optical module.

[0017] Preferably, in the PON optical module network, the communication protocol between the OLT device and each ONU device is OMCI or OAM communication protocol.

[0018] Preferably, in step S2, batch registering all ONU devices to the OLT device according to the initial optical module type includes:

[0019] The initial optical module type is identified by the manufacturer ID and device ID set on the PON optical module of the initial optical module type. The OLT device registers each ONU device according to the identified initial optical module type.

[0020] Preferably, in step S3, when the OLT device uses one initial optical module type to register all ONU devices in batches, if the batch registration is not completed within a preset time, the initial optical module type is skipped and the next initial optical module type is used to re-register in batches.

[0021] Preferably, in step S3, the total registration time corresponding to each initial optical module type after the introduction of the new optical module type is obtained and recorded as the secondary total registration time. The step also includes: saving each initial optical module type and its corresponding secondary total registration time respectively, and constructing a secondary total registration time record table.

[0022] Preferably, in step S4, the preset first condition is: the absolute value of the difference between the minimum secondary total registration time and the initial total registration time is less than a first preset value.

[0023] Preferably, in step S5, several secondary total registration times that satisfy the preset second condition are selected, and the parameters of the initial optical module type corresponding to the smallest secondary total registration time are optimized using each initial optical module type corresponding to the selected several secondary total registration times.

[0024] The second preset condition is as follows: the absolute value of the difference between the total time of the second registration and the total time of the initial registration is less than the second preset value, and the second preset value is greater than the first preset value.

[0025] Preferably, the parameter optimization in step S5 includes: obtaining the configuration parameters of the reset signal for each initial optical module type corresponding to several secondary total registration times, and optimizing the configuration parameters through an inward convergence optimization method;

[0026] The configuration parameters include: the frequency of the timing sequence, the time of occurrence, and the duration of occurrence.

[0027] Preferably, in step S1, the maximum number of ONU devices in the PON optical module network is 128.

[0028] Preferably, in step S1, the PON optical module is specifically an XGS-PON optical module.

[0029] Compared with the prior art, the beneficial effects of the technical solution of the present invention are:

[0030] This invention provides a method for automatic optical module adaptation in an OLT. First, a PON optical module network is established. The PON optical module network includes an OLT device, PON optical modules of an initial optical module type, and several ONU devices. The OLT device has several preset initial optical module types. The OLT device connects to all ONU devices via PON optical modules. Based on the established PON optical module network, all ONU devices are batch registered to the OLT device according to their initial optical module types, and the total registration time of all ONU devices under the initial optical module type is obtained and recorded as the initial total registration time. In the PON optical module network, PON optical modules of the initial optical module type are replaced with PON optical modules of the new optical module type. Using a polling method for all initial optical module types, the OLT device utilizes each initial optical module type... The OLT device re-registers all ONU devices with the new optical module type in batches, and obtains the total registration time for each initial optical module type after the introduction of the new optical module type, which is recorded as the secondary total registration time. The minimum secondary total registration time is compared with the initial total registration time to determine whether a preset first condition is met. If the condition is met, the OLT device saves the initial optical module type corresponding to the minimum secondary total registration time as the optimal optical module type. Otherwise, the parameters of the initial optical module type corresponding to the minimum secondary total registration time are optimized to obtain the parameter-optimized initial optical module type. The OLT device saves the parameter-optimized initial optical module type as the optimal optical module type. The OLT device uses the optimal optical module type to perform batch registration of ONU devices under the new optical module type, completing the automatic adaptation of the optical module.

[0031] This invention enables OLT devices to automatically and efficiently adapt to new optical module types, achieving fast, stable, and packet-free batch registration of ONU devices. After introducing a new PON optical module manufacturer, OLT manufacturers no longer need to conduct a round of complicated manual testing before formally introducing the module. Instead, the system can automatically adapt to the PON optical module through self-learning, saving time and effort, and avoiding some errors caused by manual testing. Attached Figure Description

[0032] Figure 1 This is a flowchart of a method for automatic optical module adaptation of an OLT provided in Example 1.

[0033] Figure 2 This is a schematic diagram of communication between the OLT device and the ONU device provided in Example 2.

[0034] Figure 3 This is a system structure diagram of an OLT automatic adaptation optical module provided in Example 3. Detailed Implementation

[0035] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent.

[0036] To better illustrate this embodiment, some parts in the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions;

[0037] It will be understood by those skilled in the art that certain well-known structures and their descriptions may be omitted in the accompanying drawings.

[0038] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0039] Example 1

[0040] like Figure 1 As shown, this embodiment provides a method for automatic OLT adaptation of optical modules, including the following steps:

[0041] S1: Establish a PON optical module network;

[0042] The PON optical module network includes an OLT device, PON optical modules of the initial optical module type, and several ONU devices; the OLT device has several types of initial optical modules pre-set.

[0043] The OLT device connects to all ONU devices via a PON optical module;

[0044] S2: Based on the established PON optical module network, register all ONU devices to the OLT device in batches according to the initial optical module type, and obtain the total registration time of all ONU devices under the initial optical module type, which is recorded as the initial total registration time;

[0045] S3: In the PON optical module network, replace the PON optical module of the initial optical module type with a PON optical module of the new optical module type;

[0046] By polling all initial optical module types, the OLT device re-registers all ONU devices in batches for each initial optical module type, and obtains the total registration time for each initial optical module type after the introduction of the new optical module type, which is recorded as the secondary total registration time.

[0047] S4: Compare the minimum total secondary registration time with the initial total registration time to determine whether the preset first condition is met. If it is met, the OLT device saves the initial optical module type corresponding to the minimum total secondary registration time as the optimal optical module type and executes step S6; otherwise, execute step S5.

[0048] S5: Optimize the parameters of the initial optical module type corresponding to the minimum total secondary registration time, obtain the optimized initial optical module type, and save the optimized initial optical module type as the optimal optical module type. Then, proceed to step S6.

[0049] S6: The OLT device uses the optimal optical module type to register the ONU devices under the new optical module type in batches, thus completing the automatic adaptation of the optical module.

[0050] In the specific implementation process, the first step is to build a PON optical module network, which includes an OLT device, PON optical modules of the initial optical module type, and several ONU devices. The OLT device has several types of initial optical modules pre-set. The OLT device connects to all ONU devices through the PON optical modules.

[0051] Based on the established PON optical module network, all ONU devices are registered to the OLT device in batches according to the initial optical module type, and the total registration time of all ONU devices under the initial optical module type is obtained and recorded as the initial total registration time.

[0052] When introducing a new type of PON module, the initial optical module type is automatically configured according to the initial optical module type list using a polling mechanism. The total time required for secondary registration of all ONUs under this PON port is recorded as the total secondary registration time.

[0053] After polling the initial type of all optical modules, the optimal mode (i.e. the shortest time) is determined by the recorded total secondary registration time and recorded for use in the device.

[0054] If all optical module types are not ideal after testing, then select the best few initial optical module types (5 in this example), and then fine-tune the parameters by referring to the specific mapping parameters of the 5 initial optical module types until the requirements are met.

[0055] This method enables OLT devices to automatically and efficiently adapt to new optical module types, achieving fast, stable, and packet-free batch registration of ONU devices. After introducing a new PON optical module manufacturer, OLT manufacturers no longer need to conduct a round of complicated manual testing before formally introducing the module. Instead, the system can automatically adapt to the PON optical module through self-learning, saving time and effort, and avoiding some errors caused by manual testing.

[0056] Example 2

[0057] This embodiment provides a method for automatic OLT adaptation of optical modules, including the following steps:

[0058] S1: Establish a PON optical module network;

[0059] The PON optical module network includes an OLT device, PON optical modules of the initial optical module type, and several ONU devices; the OLT device has several types of initial optical modules pre-set.

[0060] The OLT device connects to all ONU devices via a PON optical module;

[0061] S2: Based on the established PON optical module network, register all ONU devices to the OLT device in batches according to the initial optical module type, and obtain the total registration time of all ONU devices under the initial optical module type, which is recorded as the initial total registration time;

[0062] S3: In the PON optical module network, replace the PON optical module of the initial optical module type with a PON optical module of the new optical module type;

[0063] By polling all initial optical module types, the OLT device re-registers all ONU devices in batches for each initial optical module type, and obtains the total registration time for each initial optical module type after the introduction of the new optical module type, which is recorded as the secondary total registration time.

[0064] S4: Compare the minimum total secondary registration time with the initial total registration time to determine whether the preset first condition is met. If it is met, the OLT device saves the initial optical module type corresponding to the minimum total secondary registration time as the optimal optical module type and executes step S6; otherwise, execute step S5.

[0065] S5: Optimize the parameters of the initial optical module type corresponding to the minimum total secondary registration time, obtain the optimized initial optical module type, and save the optimized initial optical module type as the optimal optical module type. Then, proceed to step S6.

[0066] S6: The OLT device uses the optimal optical module type to register the ONU devices under the new optical module type in batches, and completes the automatic adaptation of the optical module;

[0067] like Figure 2 As shown, in the PON optical module network, the communication protocol between the OLT device and each ONU device is OMCI or OAM communication protocol.

[0068] In step S2, registering all ONU devices to the OLT device in batches according to the initial optical module type includes:

[0069] The initial optical module type is identified based on the manufacturer ID and device ID set on the PON optical module of the initial optical module type. The OLT device registers each ONU device according to the identified initial optical module type.

[0070] In step S3, when the OLT device uses one initial optical module type to register all ONU devices in batches, if the batch registration is not completed within a preset time, the initial optical module type is skipped and the next initial optical module type is used to re-register in batches.

[0071] In step S3, the total registration time corresponding to each initial optical module type after the introduction of the new optical module type is obtained and recorded as the secondary total registration time. The step also includes: saving each initial optical module type and its corresponding secondary total registration time respectively, and constructing a secondary total registration time record table.

[0072] In step S4, the first preset condition is specifically: the absolute value of the difference between the minimum total secondary registration time and the initial total registration time is less than a first preset value.

[0073] In step S5, several secondary total registration times that satisfy the preset second condition are selected, and the parameters of the initial optical module type corresponding to the smallest secondary total registration time are optimized using each initial optical module type corresponding to the selected several secondary total registration times.

[0074] The second preset condition is as follows: the absolute value of the difference between the total time of the second registration and the total time of the initial registration is less than the second preset value, and the second preset value is greater than the first preset value;

[0075] The parameter optimization in step S5 includes: obtaining the configuration parameters of the reset signal for each initial optical module type corresponding to several secondary total registration times, and optimizing the configuration parameters through an inward convergence optimization method;

[0076] The configuration parameters include: the frequency of the timing sequence, the time of occurrence, and the duration of occurrence;

[0077] In step S1, the maximum number of ONU devices in the PON optical module network is 128.

[0078] In step S1, the PON optical module is specifically an XGS-PON optical module.

[0079] In the specific implementation process, the procedure for automatically adapting the OLT to the XGS-PON optical module type is as follows:

[0080] First, obtain the time required for normal batch registration of 128 ONUs under a PON port: To build a batch XGS-PON optical module network, first use the initial type already supported by the OLT device, and automatically identify the initial type by reading the PON optical module manufacturer ID and device ID. Based on the identified initial type, batch register all ONU devices to the OLT, and record the registration time required for all ONUs under normal circumstances, i.e., the initial total registration time.

[0081] Then, the system automatically records the total registration time of the new optical module type by polling all initial types: In the same environment, when a new type of PON optical module is introduced, the system automatically uses the polling method of the initial optical module type list to register ONUs in batches, and records the registration time required to complete all ONUs under each initial type, i.e., the secondary total registration time. The initial types and secondary total registration times are saved one by one to build a secondary total registration time record table. In addition, if all registrations cannot be completed within the specified time, the initial type is skipped, and the system automatically jumps to the next initial type for matching and re-performs the ONU batch registration.

[0082] Finally, based on the constructed secondary total registration time record table, the optimal type is selected: after all type matching is completed, the system automatically generates a record table to record the module type and registration time; based on the initial total registration time obtained at the beginning, it compares one by one and selects the optimal initial type (the one with the shortest secondary total registration time) as the new optical module type, and records the initial type in the system. The next time the system encounters the new type, it directly queries and automatically selects the initial optical module type for registration;

[0083] Furthermore, since the type of optical module is pre-configured by the manufacturer, it is ultimately mapped to specific optical module parameters. If the initial type that meets the expectations cannot be selected in the above steps, the optical module parameters are further adjusted: First, the five optimal types in the time record table are selected, and their specific parameters are compared one by one. The data is analyzed to determine the commonalities and differences of each optical module parameter. By using an inward convergence method, the optimal optical module parameters are tested. In this embodiment, the parameters are specifically the configuration parameters of the reset signal, including: the frequency of the timing, the time of occurrence, and the duration of occurrence. Similarly, the test results are recorded in the system, and the corresponding optical module parameters are automatically configured for the next use.

[0084] This method enables OLT devices to automatically and efficiently adapt to new optical module types, achieving fast, stable, and packet-free batch registration of ONU devices. After introducing a new PON optical module manufacturer, OLT manufacturers no longer need to conduct a round of complicated manual testing before formally introducing the module. Instead, the system can automatically adapt to the PON optical module through self-learning, saving time and effort, and avoiding some errors caused by manual testing.

[0085] Example 3

[0086] like Figure 3 As shown, this embodiment provides a system for automatic OLT adaptation of optical modules, applying the method for automatic OLT adaptation of optical modules in embodiment 1 or 2, including:

[0087] Network setup unit 301: Used to build a PON optical module network;

[0088] The PON optical module network includes an OLT device, PON optical modules of the initial optical module type, and several ONU devices; the OLT device has several types of initial optical modules pre-set.

[0089] The OLT device connects to all ONU devices via a PON optical module;

[0090] Initial registration unit 302: Used to register all ONU devices to the OLT device in batches based on the established PON optical module network and the initial optical module type, and to obtain the total registration time of all ONU devices under the initial optical module type, which is recorded as the initial total registration time;

[0091] Secondary registration unit 303: used to replace the PON optical module of the initial optical module type with a PON optical module of the new optical module type in the PON optical module network;

[0092] By polling all initial optical module types, the OLT device re-registers all ONU devices in batches for each initial optical module type, and obtains the total registration time for each initial optical module type after the introduction of the new optical module type, which is recorded as the secondary total registration time.

[0093] Comparison unit 304: is used to compare the minimum secondary total registration time with the initial total registration time to determine whether a preset first condition is met. If the condition is met, the OLT device saves the initial optical module type corresponding to the minimum secondary total registration time as the optimal optical module type and executes the optical module adaptation unit 306; otherwise, it executes the parameter optimization unit 305.

[0094] Parameter optimization unit 305: is used to optimize the parameters of the initial optical module type corresponding to the minimum total secondary registration time, obtain the optimized initial optical module type, and the OLT device saves the optimized initial optical module type as the optimal optical module type and executes the optical module adaptation unit 306.

[0095] Optical module adaptation unit 306: The OLT device uses the optimal optical module type to perform batch registration of ONU devices under the new optical module type, thereby completing the automatic adaptation of the optical module.

[0096] In the specific implementation process, the network building unit 301 first builds the PON optical module network, including OLT equipment, PON optical modules of the initial optical module type and several ONU devices; the OLT equipment has several types of initial optical modules preset; the OLT equipment connects to all ONU devices through the PON optical modules;

[0097] The initial registration unit 302, based on the established PON optical module network, registers all ONU devices to the OLT device in batches according to the initial optical module type, and obtains the total registration time of all ONU devices under the initial optical module type, which is recorded as the initial total registration time.

[0098] When introducing a new type of PON module, the secondary registration unit 303 automatically configures the initial optical module type according to the initial optical module type list and adopts a polling mechanism, and records the total time required for secondary registration of all ONUs under this PON port, which is recorded as the total secondary registration time.

[0099] After the comparison unit 304 polls the initial type of all optical modules, it determines which mode is optimal by recording the total secondary registration time, and the optical module adaptation unit 306 records it for use in the device.

[0100] If all optical module types are not ideal after testing, the parameter optimization unit 305 selects several optimal initial optical module types (five in this embodiment) and then performs parameter tuning by referring to the specific mapping parameters of the five initial optical module types until the requirements are met.

[0101] This system enables OLT devices to automatically and efficiently adapt to new optical module types, achieving fast, stable, and packet-free batch registration of ONU devices. After introducing a new PON optical module manufacturer, OLT manufacturers no longer need to conduct a round of complicated manual testing before formally introducing the module. Instead, the system can automatically adapt to the PON optical module through self-learning, saving time and effort, and avoiding some errors caused by manual testing.

[0102] The same or similar labels correspond to the same or similar parts;

[0103] The terms used to describe positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0104] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A method for automatic adaptation of optical modules by an OLT, characterized in that, Includes the following steps: S1: Establish a PON optical module network; The PON optical module network includes an OLT device, PON optical modules of the initial optical module type, and several ONU devices; the OLT device has several types of initial optical modules pre-set. The OLT device connects to all ONU devices via a PON optical module; S2: Based on the established PON optical module network, register all ONU devices to the OLT device in batches according to the initial optical module type, and obtain the total registration time of all ONU devices under the initial optical module type, which is recorded as the initial total registration time; This includes registering all ONU devices to the OLT device in batches based on the initial optical module type, which includes: The initial optical module type is identified based on the manufacturer ID and device ID set on the PON optical module of the initial optical module type. The OLT device registers each ONU device according to the identified initial optical module type. S3: In the PON optical module network, replace the PON optical module of the initial optical module type with a PON optical module of the new optical module type; By polling all initial optical module types, the OLT device re-registers all ONU devices in batches using each initial optical module type, and obtains the total registration time for each initial optical module type after the introduction of the new optical module type, which is recorded as the secondary total registration time. If all batch registrations are not completed within the preset time, the initial optical module type is skipped, and the next initial optical module type is used to re-register in batches. S4: Compare the minimum total secondary registration time with the initial total registration time to determine whether the preset first condition is met. If it is met, the OLT device saves the initial optical module type corresponding to the minimum total secondary registration time as the optimal optical module type and executes step S6; otherwise, execute step S5. S5: Optimize the parameters of the initial optical module type corresponding to the minimum total secondary registration time, obtain the optimized initial optical module type, and save the optimized initial optical module type as the optimal optical module type. Then, proceed to step S6. S6: The OLT device uses the optimal optical module type to register the ONU devices under the new optical module type in batches, thus completing the automatic adaptation of the optical module.

2. The method for automatic OLT adaptation of optical modules according to claim 1, characterized in that, In the PON optical module network described above, the communication protocol between the OLT device and each ONU device is either OMCI or OAM communication protocol.

3. The method for automatic OLT adaptation of optical modules according to claim 1, characterized in that, In step S3, the total registration time corresponding to each initial optical module type after the introduction of the new optical module type is obtained and recorded as the secondary total registration time. The step also includes: saving each initial optical module type and its corresponding secondary total registration time respectively, and constructing a secondary total registration time record table.

4. The method for automatic OLT adaptation of optical modules according to claim 1, characterized in that, In step S4, the first preset condition is specifically: the absolute value of the difference between the minimum total secondary registration time and the initial total registration time is less than a first preset value.

5. The method for automatic OLT adaptation of optical modules according to claim 4, characterized in that, In step S5, several secondary total registration times that satisfy the preset second condition are selected, and the parameters of the initial optical module type corresponding to the smallest secondary total registration time are optimized using each initial optical module type corresponding to the selected several secondary total registration times. The second preset condition is as follows: the absolute value of the difference between the total time of the second registration and the total time of the initial registration is less than the second preset value, and the second preset value is greater than the first preset value.

6. The method for automatic OLT adaptation of optical modules according to claim 5, characterized in that, The parameter optimization in step S5 includes: obtaining the configuration parameters of the reset signal for each initial optical module type corresponding to several secondary total registration times, and optimizing the configuration parameters through an inward convergence optimization method; The configuration parameters include: the frequency of the timing sequence, the time of occurrence, and the duration of occurrence.

7. The method for automatic OLT adaptation of optical modules according to claim 1, characterized in that, In step S1, the maximum number of ONU devices in the PON optical module network is 128.

8. A method for automatic OLT adaptation of optical modules according to any one of claims 1 to 7, characterized in that, In step S1, the PON optical module is specifically an XGS-PON optical module.

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