An optical modem authentication method and system based on OLT devices

Abstract

This invention discloses an optical modem authentication method and system based on an OLT device, relating to the field of digital information transmission technology. The method performs a quality check on the OLT device. If the OLT device is suitable for authentication, after connecting the optical modem to the authenticating OLT device, the stability of the connection between the optical modem and the authenticating OLT device is checked to determine if the connection is stable. If the connection is stable, authentication is performed. After authentication, the operating status of the optical modem is checked to determine if it can operate normally. If the optical modem operates normally, the process ends. This effectively solves problems such as unstable connections between the optical modem and the OLT device, authentication failures, and abnormal optical modem operation.

Description

Technical Field

[0001] This invention relates to the field of digital information transmission technology, specifically to an optical modem authentication method and system based on OLT devices. Background Technology

[0002] The authentication methods for optical modems in OLT (Optical Line Terminal) devices mainly include MAC address authentication, username / password authentication (such as PPPoE), DHCP authentication (using DHCP Option 82 for verification), IEEE 802.1X authentication (authentication via EAP), SNMP authentication, and dynamic VLAN allocation. These methods ensure that the accessed optical modem device is authenticated, legally accesses the network, and obtains the corresponding IP address, thereby guaranteeing network security and reliability.

[0003] However, existing authentication methods are difficult to effectively solve problems such as unstable connection between optical modem and OLT device, authentication failure, and abnormal operation of optical modem. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an optical modem authentication method and system based on an OLT device, which can effectively solve problems such as unstable connection between the optical modem and the OLT device, authentication failure, and abnormal operation of the optical modem.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for optical modem authentication based on an OLT device, comprising the following steps: performing a quality check on the OLT device to determine whether the OLT device can be used for authentication; if the OLT device cannot be used for authentication, replacing the OLT device and re-determining whether the replaced OLT device can be used for authentication; if the OLT device can be used for authentication, after connecting the optical modem to the authenticable OLT device, checking the connection stability between the optical modem and the authenticable OLT device to determine whether the connection between the optical modem and the authenticable OLT device is stable; if the connection between the optical modem and the authenticable OLT device is stable, performing authentication; after authentication, checking the operating status of the optical modem to determine whether the optical modem can operate normally; if the optical modem can operate normally, ending the process; if the optical modem cannot operate normally, replacing the optical modem and re-determining whether the connection between the replaced optical modem and the authenticable OLT device is stable; if the connection between the optical modem and the authenticable OLT device is unstable, replacing the optical modem and re-determining whether the connection between the replaced optical modem and the authenticable OLT device is stable.

[0006] Furthermore, if the optical modem and the authenticating OLT device have a stable connection, authentication is performed, including the following steps: the authenticating OLT device receives authentication request information sent by the optical modem, the authentication request information including the optical modem's MAC address and serial number; the authenticating OLT device forwards the received authentication request information to the authentication server; the authentication server checks the database to see if the authentication request information exists: if it does not exist, authentication fails, and the optical modem is determined to be an illegitimate device; if it exists, authentication succeeds, and the optical modem is determined to be a legitimate device; after successful authentication, the authentication server retrieves the service quality reference data corresponding to the optical modem from the database, instructing the authenticating OLT device to be applied to the optical modem. The service quality reference data serves as the basis for analysis to determine whether the optical modem can operate normally, and the service quality reference data includes reference bit error rate, reference latency, reference temperature, and reference average transmit / receive power.

[0007] Further, the quality inspection of the OLT device to determine whether the OLT device can be used for certification includes the following steps: Determining whether the OLT device's operation indicator light is normal: if the operation indicator light is abnormal, the OLT device cannot be used for certification; if the operation indicator light is normal, acquiring the OLT device's external status data, analyzing the OLT device's external status data with the corresponding external status parameter data stored in the database, and determining whether the OLT device's external status data is normal. The OLT device's external status data includes the average ambient temperature, average ambient humidity, and the OLT device's usage time. The external status parameter data includes the average ambient temperature, average ambient humidity, and the OLT device's usage time. If the OLT device's external status data is abnormal, the OLT device cannot be used for certification; if the OLT device's external status data is normal, acquiring the OLT device's operating data... The operational data includes optical signal strength, total optical loss, and link utilization. Under normal external status conditions, the permissible operational deviation data of the OLT device is obtained based on the external status data and the corresponding external status parameter data stored in the database. This permissible deviation data includes permissible deviations for optical signal strength, total optical loss, and link utilization. Based on the OLT device's operational data, permissible operational deviation data, and corresponding operational reference data stored in the database, the system determines whether the OLT device is operating normally. This reference data includes reference values ​​for optical signal strength, total optical loss, and link utilization. If the OLT device is operating normally, it can be used for authentication; if it is not operating normally, it cannot be used for authentication.

[0008] Furthermore, the step of analyzing the external status data of the OLT device with the corresponding external status parameter data stored in the database to determine whether the external status data of the OLT device is normal includes the following steps: analyzing the external status data of the OLT device with the corresponding external status parameter data stored in the database to obtain the OLT external device status evaluation value, wherein the calculation formula for the OLT external device status evaluation value is as follows:

[0009] ;

[0010] In the formula, This is the status assessment value for OLT external equipment. The ambient average temperature The average ambient humidity. The duration of use of the OLT equipment. The average temperature of the environment is determined. To determine the average humidity of the environment, The usage time of the OLT equipment is set. This is a natural constant. The OLT external device status assessment value is compared with the OLT external device status assessment range set in the database to determine whether the OLT external device status assessment value is within the range set in the database: if the OLT external device status assessment value is within the range set in the database, then the OLT device external status data is normal; if the OLT external device status assessment value is not within the range set in the database, then the OLT device external status data is abnormal.

[0011] Furthermore, the step of obtaining the allowable operational deviation data of the OLT device based on the external status data of the OLT device and the corresponding external status parameter data of the OLT device stored in the database when the external status data of the OLT device is normal includes the following steps: obtaining the median value of the OLT external device status evaluation interval set in the database; obtaining the deviation value between the OLT external device status evaluation value and the median value of the OLT external device status evaluation interval set in the database; comparing the deviation value with the allowable operational deviation data of the OLT device corresponding to each deviation value stored in the database, and obtaining the allowable operational deviation data of the OLT device corresponding to the successfully matched deviation value.

[0012] Furthermore, the method of determining whether the OLT device is operating normally based on the OLT device's operating data, the OLT device's allowable operating deviation data, and the corresponding operating reference data stored in the database includes the following steps: analyzing the OLT device's operating data, the OLT device's allowable operating deviation data, and the corresponding operating reference data stored in the database to obtain the OLT device's operating status evaluation index; comparing the OLT device's operating status evaluation index with the OLT device's operating status evaluation threshold set in the database to determine whether the OLT device's operating status evaluation index is greater than the OLT device's operating status evaluation threshold set in the database; if the OLT device's operating status evaluation index is greater than the OLT device's operating status evaluation threshold set in the database, then the OLT device's operating status is abnormal; if the OLT device's operating status evaluation index is not greater than the OLT device's operating status evaluation threshold set in the database, then the OLT device's operating status is normal.

[0013] Furthermore, the formula for calculating the operating status evaluation index of the OLT equipment is as follows:

[0014] ;

[0015] In the formula, An index for assessing the operational status of OLT equipment. For light signal intensity, This represents the total optical loss. For link utilization, This is the allowable deviation value for optical signal intensity. This is the allowable deviation value for the total optical loss. This is the allowable deviation value for link utilization. This is a reference value for optical signal intensity. This is a reference value for the total optical loss. This is a reference value for link utilization. The light signal intensity weighting factors are stored in the database. The total optical loss value is a weighting factor stored in the database. The link utilization weighting factor is stored in the database.

[0016] Further, the step of checking the connection stability between the optical modem and the authenticable OLT device to determine whether the connection between the optical modem and the authenticable OLT device is stable includes the following steps: comparing the deviation value with the connection stability deviation data corresponding to each deviation value stored in the database, and obtaining the connection stability deviation data corresponding to the successfully matched deviation value. The connection stability deviation data includes downlink optical power deviation value, uplink optical power deviation value, fiber link attenuation deviation value, and connection optical signal strength deviation value; obtaining the stability data after the optical modem is connected to the authenticable OLT device, the stability data including downlink optical power, uplink optical power, fiber link attenuation, and connection optical signal strength; obtaining the stability reference data after the connection between the optical modem and the authenticable OLT device stored in the database, the stability reference data including downlink reference optical power, uplink reference optical power, fiber link reference attenuation, and reference connection optical signal strength; and analyzing the connection stability deviation data, stability data, and stability reference data to obtain the connection stability evaluation index. The calculation formula for the connection stability evaluation index is as follows:

[0017] ;

[0018] In the formula, This is a connection stability assessment index. This refers to the downlink optical power. For uplink optical power, For fiber optic link attenuation, To connect the optical signal strength, This is the downlink reference optical power. For uplink reference optical power, For fiber optic link reference attenuation, For reference connection optical signal strength, This is the downlink optical power deviation value. This represents the uplink optical power deviation value. This represents the attenuation deviation value of the fiber optic link. To connect the optical signal intensity deviation value, The connection stability evaluation index is a natural constant. The connection stability evaluation index is compared with the connection stability evaluation threshold stored in the database to determine whether the connection stability evaluation index is greater than the connection stability evaluation threshold stored in the database. If the connection stability evaluation index is greater than the connection stability evaluation threshold stored in the database, the connection between the optical modem and the OLT device that can be certified is unstable. If the connection stability evaluation index is not greater than the connection stability evaluation threshold stored in the database, the connection between the optical modem and the OLT device that can be certified is stable.

[0019] Furthermore, after the authentication is completed, the operating status of the optical modem is checked to determine whether the optical modem can operate normally, including the following steps: obtaining the actual service quality data of the optical modem, which includes the actual bit error rate, actual latency, actual temperature, and actual average transmit and receive power; comparing and analyzing the actual service quality data of the optical modem with the service quality reference data to obtain the service quality assessment index, wherein the calculation formula of the service quality assessment index is as follows:

[0020] ;

[0021] In the formula, As a service quality assessment index, This represents the actual bit error rate. This is the actual delay. This is the actual temperature. This represents the actual average transmit and receive power. For reference bit error rate, For reference delay, For reference temperature, The average transmit and receive power is used as a reference. The service quality assessment index is compared with the service quality assessment threshold stored in the database to determine whether the service quality assessment index is greater than the service quality assessment threshold stored in the database. If the service quality assessment index is greater than the service quality assessment threshold stored in the database, the optical modem cannot operate normally; if the service quality assessment index is not greater than the service quality assessment threshold stored in the database, the optical modem can operate normally.

[0022] An optical modem authentication system based on an OLT device, used in the aforementioned optical modem authentication method based on an OLT device, includes an OLT device quality check module, a connection stability check module, and an optical modem operation quality check module. The OLT device quality check module performs a quality check on the OLT device to determine if it can be used for authentication. If the OLT device cannot be used for authentication, it is replaced, and the system re-determines whether the replaced OLT device can be used for authentication. The connection stability check module, if the OLT device can be used for authentication, checks the connection stability between the optical modem and the authenticating OLT device after the connection is established. The connection stability of the optical modem and the OLT device is checked to determine whether the connection between the optical modem and the OLT device that can be authenticated is stable. The optical modem operation quality check module is used to perform authentication if the connection between the optical modem and the OLT device that can be authenticated is stable. After authentication, the operating status of the optical modem is checked to determine whether the optical modem can operate normally. If the optical modem can operate normally, the process ends. If the optical modem cannot operate normally, the optical modem is replaced and the connection between the replaced optical modem and the OLT device that can be authenticated is re-checked. If the connection between the optical modem and the OLT device that can be authenticated is unstable, the optical modem is replaced and the connection between the replaced optical modem and the OLT device that can be authenticated is re-checked.

[0023] The present invention has the following beneficial effects:

[0024] This optical modem authentication method based on OLT devices effectively solves problems such as unstable connections, authentication failures, and abnormal operation of the optical modem through multi-layer authentication and quality checks. By performing step-by-step quality checks and compatibility verification on both the OLT device and the optical modem, it ensures that the stability and compatibility of the devices meet the requirements before authentication, thereby improving the reliability of network services and user experience, and reducing network interruptions and maintenance costs caused by equipment failures.

[0025] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0026] Figure 1 This is a flowchart of the optical modem authentication method based on OLT devices according to the present invention.

[0027] Figure 2 This is a flowchart of the optical modem authentication system based on OLT devices according to the present invention. Detailed Implementation

[0028] This application's embodiments, through an optical modem authentication method and system based on OLT devices, can effectively solve problems such as unstable connections between optical modems and OLT devices, authentication failures, and abnormal optical modem operation. By performing step-by-step quality checks and compatibility verification on both the OLT device and the optical modem, it ensures that the stability and compatibility of the devices meet requirements before authentication, thereby improving network service reliability and user experience, and reducing network interruptions and maintenance costs caused by device failures.

[0029] Please see Figure 1 This invention provides a technical solution: a method for optical modem authentication based on an OLT device, comprising the following steps: performing a quality check on the OLT device to determine whether the OLT device can be used for authentication; if the OLT device cannot be used for authentication, replacing the OLT device and re-determining whether the replaced OLT device can be used for authentication; if the OLT device can be used for authentication, after connecting the optical modem to the authenticable OLT device, checking the connection stability between the optical modem and the authenticable OLT device to determine whether the connection between the optical modem and the authenticable OLT device is stable; if the connection between the optical modem and the authenticable OLT device is stable, performing authentication; after authentication, checking the operating status of the optical modem to determine whether the optical modem can operate normally; if the optical modem can operate normally, ending the process; if the optical modem cannot operate normally, replacing the optical modem and re-determining whether the connection between the replaced optical modem and the authenticable OLT device is stable; if the connection between the optical modem and the authenticable OLT device is unstable, replacing the optical modem and re-determining whether the connection between the replaced optical modem and the authenticable OLT device is stable.

[0030] By conducting quality checks and performance evaluations of OLT devices and optical modems, we ensure that each step of the certification process is systematically verified, reducing the risk of failure through a step-by-step approach. If an OLT or optical modem is found to be unqualified, it is promptly replaced and re-verified to ensure the reliability of the entire certification process. Before certification, we check the connection stability between the optical modem and OLT to ensure that there is no interference in signal transmission between them, improving overall network performance and user experience. By checking the operational status of the optical modem again after certification, we not only ensure the success of the certification process but also help identify potential problems and respond quickly. By ensuring high compatibility and stability of devices in the optical network, we can effectively improve the user's internet experience, reduce the failure rate, and enhance customer trust and satisfaction.

[0031] Specifically, if the optical modem (ONT) and an authenticating OLT device are stably connected, authentication is performed, including the following steps: The authenticating OLT device receives authentication request information sent by the OLT, which includes the OLT's MAC address and serial number; the authenticating OLT device forwards the received authentication request information to the authentication server; the authentication server checks the database to see if the authentication request information exists: if it does not exist, authentication fails, and the OLT is determined to be an illegitimate device; if it exists, authentication succeeds, and the OLT is determined to be a legitimate device; after successful authentication, the authentication server retrieves the service quality reference data corresponding to the OLT from the database, instructing the authenticating OLT device to be used on the OLT. The service quality reference data serves as the basis for analysis to determine whether the OLT can operate normally, and includes reference bit error rate, reference latency, reference temperature, and reference average transmit / receive power.

[0032] In this implementation scheme, the optical modem sends an authentication request, including its MAC address and serial number. This step is intended to uniquely identify the optical modem for subsequent legitimacy verification. Upon receiving the authentication request, the OLT device forwards it to the authentication server, centralizing the authentication logic on the server, simplifying the OLT's processing flow, and improving overall system efficiency. The authentication server queries its database for the authentication request information to verify the optical modem's legitimacy. If the request information is not found, it indicates that the optical modem is unregistered or blocked from access, authentication fails, and it is deemed an illegitimate device. This logic ensures that only compliant devices are allowed to access the network, improving network security. If the optical modem passes the legitimacy verification, authentication is successful, and the authentication server provides the corresponding quality of service (QoS) reference data to the OLT. This reference data (such as bit error rate, latency, temperature, transmit / receive power, etc.) provides a basis for subsequent optical modem operational status analysis, enabling the OLT to monitor the optical modem's performance according to preset standards.

[0033] Verifying the legitimacy of the optical modem effectively prevents unauthorized devices from accessing the network, reducing potential security risks such as network attacks or data leaks. The authentication process is standardized, requiring all devices connecting to the network to undergo the same verification steps, thus improving the standardization of network management. Upon successful authentication, the optical modem's service quality reference data is provided to the OLT, ensuring its normal operation within the network. Parameters such as bit error rate and latency in the reference data provide benchmarks for performance monitoring, helping maintenance personnel to effectively manage network performance.

[0034] Specifically, a quality inspection of the OLT device is conducted to determine its suitability for certification. This includes the following steps: First, verifying the functionality of the OLT device's operating indicator lights. If the indicator lights are malfunctioning, the OLT device cannot be used for certification. If the indicator lights are normal, the external status data of the OLT device is acquired. This data is then analyzed against the corresponding external status parameter data stored in the database to determine if the data is normal. The external status data includes average ambient temperature, average ambient humidity, and the OLT device's usage time. Temperature and humidity sensors are installed around the OLT device to monitor ambient temperature and humidity in real time and transmit the data to the OLT device's monitoring system. Temperature and humidity data within a specific time range are recorded and stored. By calculating the average temperature and humidity values ​​within that time period, the average ambient temperature and humidity are obtained. The OLT device typically records its operating time. The startup and shutdown timestamps can be obtained from the device's operating log. Based on these timestamps, the total operating time of the OLT device is calculated; this accumulated time is the OLT device's usage time.

[0035] External status data includes average ambient temperature, average ambient humidity, and OLT device usage time. If the OLT device's external status data is abnormal, the OLT device cannot be used for certification. If the OLT device's external status data is normal, the OLT device's operating data is acquired, including optical signal strength, total optical loss, and link utilization. Optical signal strength is monitored in real time by installing optical modules and optical power meters in the OLT device, and the data is transmitted to the monitoring system. Total optical loss is initially measured using OTDR and other testing equipment to calibrate the reference optical loss value of the fiber optic link. Fiber optic link measurements are performed periodically using OTDR and other equipment to obtain real-time optical loss values. The initial and real-time measurements are compared to calculate the total optical loss of the fiber optic link, and the data is recorded and stored.

[0036] When the external status data of the OLT device is normal, the permissible deviation data of the OLT device's operation is obtained based on the external status data of the OLT device and the corresponding external status parameter data stored in the database. The permissible deviation data of the OLT device's operation includes the permissible deviation values ​​of optical signal strength, total optical loss, and link utilization. Based on the OLT device's operating data, the permissible deviation data of the OLT device's operation, and the corresponding operating reference data stored in the database, the normality of the OLT device's operating status is determined. The operating reference data of the corresponding OLT device stored in the database includes the reference values ​​of optical signal strength, total optical loss, and link utilization. If the OLT device's operating status is normal, the OLT device can be used for authentication; if the OLT device's operating status is abnormal, the OLT device cannot be used for authentication.

[0037] The basic operating status of the OLT device is determined by checking its indicator lights. If the indicator lights are abnormal, it indicates a malfunction or abnormality in the device, and certification cannot be performed. If the indicator lights are normal, the external environmental status data of the OLT (such as temperature, humidity, and usage time) is obtained and compared with the standard parameter data stored in the database. This ensures that the environment in which the OLT device operates is within the normal range. Abnormal environmental data indicates a potential risk of device damage or unstable operation.

[0038] The external status data of the OLT device is analyzed against the corresponding external status parameter data stored in the database to determine whether the external status data of the OLT device is normal. This includes the following steps: Analyzing the external status data of the OLT device against the corresponding external status parameter data stored in the database to obtain the OLT external device status assessment value. The calculation formula for the OLT external device status assessment value is as follows:

[0039] ;

[0040] In the formula, This is the status assessment value for OLT external equipment. The ambient average temperature The average ambient humidity. The duration of use of the OLT equipment. The average temperature of the environment is determined. To determine the average humidity of the environment, The usage time of the OLT equipment is set. This is a natural constant. The OLT external device status assessment value is compared with the OLT external device status assessment range set in the database to determine whether the OLT external device status assessment value is within the range set in the database: if the OLT external device status assessment value is within the range set in the database, then the OLT device external status data is normal; if the OLT external device status assessment value is not within the range set in the database, then the OLT device external status data is abnormal.

[0041] In this implementation plan, the absolute difference between the current state and the reference state is calculated based on the difference in ambient temperature and humidity. This quantifies the impact of changes in ambient temperature and humidity on the equipment state. The larger the difference, the higher the first part of the evaluation value. The larger the value, the less ideal the equipment may be. This reflects the equipment's usage status. If the actual usage time exceeds the reference value, it may indicate aging or wear and tear. By adding the results of both parts and comprehensively considering environmental factors and the equipment's usage, a comprehensive condition assessment value is achieved.

[0042] By combining environmental factors and equipment usage time, a comprehensive assessment of the OLT equipment status is provided, rather than relying on a single indicator. The three parameters—average ambient temperature (Ws), average ambient humidity (Ss), and equipment usage time (STs)—were chosen primarily because they are closely related to the operational status of OLT (Optical Line Terminal) equipment. Ambient temperature and humidity can directly affect the ideal usage time of the equipment. In harsh environmental conditions, the durability and stability of the equipment decrease, and the impact of usage time may be accelerated. For example, in high humidity environments, even if the equipment has not reached the officially recommended usage time, it may already be affected, requiring more frequent inspection and maintenance. Temperature and humidity are often interrelated; increased temperature may lead to increased humidity (e.g., enhanced evaporation). These two factors work together on the equipment, therefore, they need to be considered comprehensively when monitoring equipment status. These three parameters collectively affect the performance and reliability of the OLT equipment. Environmental conditions (temperature and humidity) can directly affect the operational stability of the equipment, while the equipment's usage time reflects its overall health and potential failure risks. Considering these three factors comprehensively allows for a more complete assessment of the equipment's operational status and reliability. Therefore, the selection of these three parameters is not solely based on their individual effects, but rather on the complexity of their interaction during equipment operation and maintenance. By comprehensively analyzing these factors, the accurate assessment of OLT equipment status can be improved, helping maintenance personnel make more effective decisions to extend equipment lifespan and ensure its stable operation.

[0043] Specifically, under normal external status data of the OLT device, the permissible operational deviation data of the OLT device is obtained based on the external status data of the OLT device and the corresponding external status parameter data of the OLT device stored in the database. This includes the following steps: obtaining the median value of the OLT external device status evaluation interval set in the database; obtaining the deviation value between the OLT external device status evaluation value and the median value of the OLT external device status evaluation interval set in the database; comparing the deviation value with the permissible operational deviation data of the OLT device corresponding to each deviation value stored in the database, and obtaining the permissible operational deviation data of the OLT device corresponding to the successfully matched deviation value.

[0044] In this implementation scheme, the median value of the OLT external device status assessment interval is obtained from the database and used as a baseline reference. This median value can be defined as the average value of the assessment interval. The current status assessment value is obtained from the external status data of the OLT device and then compared with the previously obtained median value to calculate its deviation value. The calculated deviation value is compared with the allowable deviation data of the OLT device corresponding to each deviation value stored in the database. This process usually involves checking whether the deviation value is within a certain allowable range and confirming its legality. In the database, each possible deviation value may be mapped to specific allowable deviation data. For example, if the deviation value falls within a certain range, the corresponding allowable deviation data can be found. The allowable deviation data of the OLT device corresponding to the successfully matched deviation value is extracted. This data can be used to determine whether the device's operating status is normal or to indicate corresponding maintenance or warning measures. Through this logical process, the system can dynamically assess the working status of the OLT device and adjust or adapt to the current operating standards according to the actual situation. This method can effectively help operation and maintenance personnel obtain real-time operating status information and provide data support for the health status of the equipment, thereby intervening in advance when potential problems occur, reducing failure risks and maintenance costs.

[0045] Specifically, determining whether the OLT device is operating normally based on its operating data, allowable deviation data, and corresponding operating reference data stored in the database includes the following steps: analyzing the OLT device's operating data, allowable deviation data, and corresponding operating reference data to obtain an OLT device operating status evaluation index; comparing the OLT device's operating status evaluation index with a set OLT device operating status evaluation threshold in the database to determine whether the OLT device's operating status evaluation index is greater than the set threshold; if the OLT device's operating status evaluation index is greater than the set threshold, the OLT device is not operating normally; if the OLT device's operating status evaluation index is not greater than the set threshold, the OLT device is operating normally.

[0046] Real-time operating data of the OLT equipment is collected to obtain permissible deviation data, defining the acceptable operating range of the equipment under specific conditions. Operating reference data for the OLT equipment is retrieved from the database, typically including historical data or manufacturer-recommended standards. An operating status assessment index is calculated by analyzing this data. This index usually combines various operating data with permissible deviations and reference data using an algorithm (e.g., weighted average, standard deviation calculation) to arrive at a comprehensive assessment value. This assessment index should reflect the gap between the equipment's current operating status and its normal operating status. An OLT equipment operating status assessment threshold is retrieved from the database. This threshold is predefined and can be an empirical value, historical normal value, etc. The calculated operating status assessment index is compared with this set threshold. If the assessment index is greater than the threshold, it indicates that the equipment's operating status deviates and may exceed the normal operating range, and is judged as "abnormal operating status." If the assessment index is not greater than the threshold, the equipment's operating status is judged as "normal."

[0047] Through the above steps, the system can automatically assess the operating status of OLT equipment based on real-time data and established standards, providing an effective monitoring mechanism to help operation and maintenance personnel identify potential problems in a timely manner without relying on manual inspection, thereby improving equipment reliability and operational efficiency. It can be widely applied in scenarios such as network maintenance, data monitoring, and fault early warning, serving as a crucial component in automated maintenance and management to ensure the efficient and stable operation of OLT equipment.

[0048] The formula for calculating the operating status assessment index of OLT equipment is as follows:

[0049] ;

[0050] In the formula, An index for assessing the operational status of OLT equipment. For light signal intensity, This represents the total optical loss. For link utilization, This is the allowable deviation value for optical signal intensity. This is the allowable deviation value for the total optical loss. This is the allowable deviation value for link utilization. This is a reference value for optical signal intensity. This is a reference value for the total optical loss. This is a reference value for link utilization. The light signal intensity weighting factors are stored in the database. The total optical loss value is a weighting factor stored in the database. The link utilization weighting factor is stored in the database.

[0051] In this implementation scheme, the formula is used to evaluate the operational status of OLT (Optical Line Terminal) equipment. By comprehensively considering multiple key performance indicators (optical signal strength, total optical loss, and link utilization), a unified status assessment index (YP) is provided. The difference between each performance indicator (Qg, Sg, Lg) and its reference value (Qgc, Sgc, Lgc) is calculated using absolute values ​​to measure the deviation between the current state and the ideal state. These indicators are important standards for evaluating the performance of OLT equipment. The differences are standardized by allowing deviation values ​​(∆Qg, ∆Sg, ∆Lg), so that the deviations of different indicators can be compared within the same order of magnitude. This avoids the disproportionate impact of a single indicator on the overall assessment due to differences in units or ranges. Finally, the weighted sum of the indicators yields the operational status assessment index (YP). This is a comprehensive index that can quickly assess the overall health status of the OLT equipment.

[0052] Optical signal strength directly affects the quality of data transmission. In fiber optic communication systems, insufficient signal strength can prevent the receiver from correctly decoding data, leading to packet loss and transmission errors. Changes in optical signal strength reflect optical loss in the link, impacting the receiving capability of downstream devices. Optical loss is the total signal attenuation in a fiber optic link, including loss in the fiber itself, connectors, and access equipment. High optical loss can cause signal attenuation to the point of being unreceiveable. Optical loss is directly related to optical signal strength; excessive loss reduces signal strength, affecting the final data transmission quality. Furthermore, the design and maintenance of the link also influence optical loss. Link utilization indicates the current usage of the link under actual data load. High utilization may indicate excessive link load, leading to latency and packet loss, impacting user experience. Link utilization is related to both optical signal strength and optical loss. Under high utilization, optical signal strength and optical loss become particularly important, as they jointly determine the link's performance under high load conditions.

[0053] These three parameters have direct and indirect interrelationships. For example, increased optical loss leads to decreased signal strength, while insufficient signal strength may result in poor link utilization under high load. When evaluating the status of OLT equipment, focusing on only one parameter is insufficient, as equipment performance is often the result of multiple factors working together. A comprehensive evaluation of multiple parameters can more accurately reflect the actual operating status.

[0054] The formula considers multiple important parameters, providing a comprehensive reflection of the performance status of OLT equipment, rather than relying on a single indicator. This helps to identify potential problems and risks.

[0055] Linear regression analysis was used to model the weighting factors in the database, with optical signal strength (Qg), total optical loss (Sg), and link utilization (Lg) as independent variables and data transmission error rate as the dependent variable. The model output showed that the regression coefficients for each independent variable were β1, β2, and β3, corresponding to the magnitude of each factor's influence on the error rate. After determining the significance of each coefficient through statistical tests, the weighting factors were obtained, indicating the relative importance of Qg, Sg, and Lg in affecting data transmission performance, ensuring that we can quantify and optimize link performance.

[0056] Specifically, the connection stability between the optical modem and the authenticable OLT device is checked to determine whether the connection between the optical modem and the authenticable OLT device is stable. This includes the following steps: comparing the deviation value with the connection stability deviation data corresponding to each deviation value stored in the database, and obtaining the connection stability deviation data corresponding to the successfully matched deviation value. The connection stability deviation data includes downlink optical power deviation value, uplink optical power deviation value, fiber link attenuation deviation value, and connection optical signal strength deviation value; obtaining the stability data after the optical modem is connected to the authenticable OLT device. The stability data includes downlink optical power, uplink optical power, fiber link attenuation, and connection optical signal strength.

[0057] Downlink optical power is obtained from the signal strength from the OLT to the optical modem via the OLT device, typically expressed in dBm (decibels per milliwatt). The corresponding monitoring parameters in the OLT will display the downlink optical power. The uplink signal power transmitted by the optical modem can be obtained through the optical modem's management interface or by querying via SNMP. Fiber optic link attenuation refers to the signal loss during transmission through the optical fiber. This data is usually provided by the OLT or optical modem and may be calculated based on the link length and fiber type. Some devices will monitor and report the current attenuation value in real time. Connection optical signal strength refers to the strength of the optical signal received by the optical modem, which can usually be found in the optical modem's monitoring interface. This value can also be obtained through the OLT and represents the effective performance of the link.

[0058] Retrieve stability reference data from the database after the optical modem is connected to the authenticable OLT device. This stability reference data includes downlink reference optical power, uplink reference optical power, fiber link reference attenuation, and reference connection optical signal strength. Analyze the connection stability deviation data, stability data, and stability reference data to obtain a connection stability evaluation index. The formula for calculating the connection stability evaluation index is as follows:

[0059] ;

[0060] In the formula, This is a connection stability assessment index. This refers to the downlink optical power. For uplink optical power, For fiber optic link attenuation, To connect the optical signal strength, This is the downlink reference optical power. For uplink reference optical power, For fiber optic link reference attenuation, For reference connection optical signal strength, This is the downlink optical power deviation value. This represents the uplink optical power deviation value. This represents the attenuation deviation value of the fiber optic link. To connect the optical signal intensity deviation value, The connection stability evaluation index is a natural constant. The connection stability evaluation index is compared with the connection stability evaluation threshold stored in the database to determine whether the connection stability evaluation index is greater than the connection stability evaluation threshold stored in the database. If the connection stability evaluation index is greater than the connection stability evaluation threshold stored in the database, the connection between the optical modem and the OLT device that can be certified is unstable. If the connection stability evaluation index is not greater than the connection stability evaluation threshold stored in the database, the connection between the optical modem and the OLT device that can be certified is stable.

[0061] The formula comprehensively considers multiple important performance indicators, reflecting the overall stability of the fiber optic link rather than relying on fluctuations in a single parameter. By using the square root of the deviation, it can sensitively capture subtle changes, enabling monitoring tools to respond promptly to minor performance degradation. Downlink and uplink optical power directly determine the stability and speed of data transmission. The deviation between their relative values ​​and reference values ​​can effectively assess the overall health of the fiber optic link. A decrease in optical power usually leads to signal attenuation, increasing the risk of link quality problems and thus affecting the stability of the overall connection. High link quality is often directly related to appropriate optical power.

[0062] In this implementation scheme, the deviation value of the current connection is obtained from the system, and these deviation values ​​are compared with the corresponding connection stability deviation data stored in the database. This deviation data may include various factors affecting connection quality, such as downlink optical power, uplink optical power, fiber link attenuation, and connection optical signal strength. After connection, actual stability data of the optical modem and OLT device are collected, and stability reference data related to the connection of the optical modem and OLT device is obtained from the database. These reference data are pre-set standards. Combining the connection stability deviation data, stability data, and stability reference data, an analysis is performed to calculate a connection stability evaluation index. This evaluation index may be derived by comparing actual data with reference data using a certain algorithm, such as relative error or weighted average. A connection stability evaluation threshold, a preset standard value, is obtained from the database, and the calculated connection stability evaluation index is compared with this threshold. If the connection stability evaluation index is greater than the threshold, it indicates that the connection quality is lower than expected and is judged as "unstable connection"; if the connection stability evaluation index is not greater than the threshold, it is judged as "stable connection".

[0063] The above steps form an automated connection stability verification mechanism. By monitoring and analyzing the connection performance between the optical modem and the OLT in real time, and using predefined standards and algorithms, the system can promptly identify problems in the connection. This logic not only improves the efficiency of network monitoring but also allows operation and maintenance personnel to respond quickly, ensuring the reliability of network connections. It can be applied to the maintenance and monitoring systems of fiber optic communication networks, especially in environments requiring high-quality connections, such as broadband network services, serving as an important component for fault detection, performance monitoring, and network optimization.

[0064] Specifically, after authentication, the optical modem's operational status is checked to determine if it can function properly. This includes the following steps: Obtaining the optical modem's actual quality of service (QoS) data, which includes actual bit error rate (BER), actual latency, actual temperature, and the actual average transmit / receive power. The actual BER refers to the ratio of the number of erroneous bits to the total number of transmitted bits within a certain time or number of bit transmissions. This is achieved by using a BER tester to send known test signals, then receiving and analyzing the number of erroneous bits. Actual latency refers to the time required for a data packet to travel from the sender to the receiver. This can be estimated by sending data packets to the optical modem using the Ping command and calculating the round-trip time (RTT). Actual temperature typically refers to the internal operating temperature of the optical modem, a crucial factor affecting device performance. Modern optical modems are generally equipped with temperature sensors that monitor the internal temperature in real time and display it through a user interface or management software. Transmit / receive power is the optical power of the signals transmitted and received by the optical modem. The actual average value refers to the power reading over an average period of time. This is obtained by directly measuring the transmit / receive power using an optical power meter. The actual service quality data of the optical modem is compared and analyzed with the service quality reference data to obtain the service quality assessment index. The calculation formula for the service quality assessment index is as follows:

[0065] ;

[0066] In the formula, As a service quality assessment index, This represents the actual bit error rate. This is the actual delay. This is the actual temperature. This represents the actual average transmit and receive power. For reference bit error rate, For reference delay, For reference temperature, The average transmit and receive power is used as a reference. The service quality assessment index is compared with the service quality assessment threshold stored in the database to determine whether the service quality assessment index is greater than the service quality assessment threshold stored in the database. If the service quality assessment index is greater than the service quality assessment threshold stored in the database, the optical modem cannot operate normally; if the service quality assessment index is not greater than the service quality assessment threshold stored in the database, the optical modem can operate normally.

[0067] In this implementation plan, after authentication, the first step is to collect the optical modem's operational status data and obtain service quality reference data. The actual service quality data of the optical modem is then compared with the service quality reference data. This step can be achieved through a predefined formula or algorithm, such as calculating errors or proportional differences, to derive a service quality assessment index. This index represents the overall service quality performance of the optical modem. The calculated service quality assessment index is then compared with a service quality assessment threshold stored in the database. This threshold is preset and aims to define the minimum standard for the optical modem's normal operation. If the service quality assessment index is greater than the threshold, it indicates that the optical modem's operational status is below acceptable standards, potentially indicating a malfunction or performance degradation, and will be judged as "the optical modem cannot operate normally." If the service quality assessment index is not greater than the threshold, it indicates that the optical modem's performance meets the operational requirements and is in normal operating condition, and will be judged as "the optical modem can operate normally."

[0068] By acquiring actual operational data from the optical modem and comparing it with preset service quality standards, an evaluation index is used to determine whether the optical modem can operate normally. This method aims to ensure that the equipment maintains stable performance throughout its lifecycle, enabling early detection of potential problems for intervention and maintenance. It is crucial in practical network management and monitoring, especially among operators providing fiber broadband services. It helps operators automatically detect the status of optical modems, optimize network configuration, improve user service quality, and effectively reduce fault response time.

[0069] An optical modem authentication system based on OLT devices, such as Figure 2As shown, the system includes an OLT device quality check module, a connection stability check module, and an optical modem operation quality check module. Specifically: the OLT device quality check module performs a quality check on the OLT device to determine if it can be used for authentication. If the OLT device cannot be used for authentication, it is replaced, and the replacement OLT device is re-evaluated for its suitability for authentication. The connection stability check module, if the OLT device can be used for authentication, checks the connection stability between the optical modem and the authentication-compatible OLT device after connection, to determine... The optical modem's connection to the authenticating OLT device is checked for stability. The optical modem operation quality check module performs authentication if the connection is stable. After authentication, it checks the optical modem's operating status to determine if it can operate normally. If the optical modem operates normally, the process ends. If the optical modem cannot operate normally, it is replaced, and the connection between the replaced optical modem and the authenticating OLT device is re-checked. If the connection between the optical modem and the authenticating OLT device is unstable, the optical modem is replaced, and the connection between the replaced optical modem and the authenticating OLT device is re-checked.

[0070] An electronic device includes a processor and a memory, wherein computer program instructions are stored in the memory, and the computer program instructions, when executed by the processor, cause the processor to perform the optical modem authentication method based on the OLT device described above.

[0071] A computer-readable storage medium for storing a program that, when executed by a processor, implements the optical modem authentication method based on an OLT device as described above.

[0072] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0073] This invention is described with reference to flowchart illustrations and / or block diagrams of systems, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations 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, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0074] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0075] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0076] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0077] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An OLT device-based optical modem authentication method, characterized in that, The method comprises the following steps: checking the quality of the OLT device to determine whether the OLT device can be used for authentication, replacing the OLT device if the OLT device cannot be used for authentication, and re-determining whether the replaced OLT device can be used for authentication; if the OLT device can be used for authentication, checking the connection stability of the optical modem and the OLT device that can be used for authentication after the optical modem is connected to the OLT device that can be used for authentication to determine whether the optical modem and the OLT device that can be used for authentication are stably connected; if the optical modem and the OLT device that can be used for authentication are stably connected, performing authentication, checking the running state of the optical modem after the authentication is completed to determine whether the optical modem can normally run, ending if the optical modem can normally run, replacing the optical modem to re-determine whether the replaced optical modem and the OLT device that can be used for authentication are stably connected if the optical modem cannot normally run, and re-determining whether the replaced optical modem and the OLT device that can be used for authentication are stably connected if the optical modem and the OLT device that can be used for authentication are not stably connected.

2. The OLT device-based optical modem authentication method of claim 1, wherein, if the optical modem and the OLT device that can be used for authentication are stably connected, performing authentication, which comprises the following steps: the OLT device that can be used for authentication receives authentication request information sent by the optical modem, wherein the authentication request information comprises the MAC address of the optical modem and the serial number of the optical modem; the OLT device that can be used for authentication forwards the received authentication request information to an authentication server; the authentication server queries whether the authentication request information exists in a database: if not, the authentication fails, and the optical modem is determined to be an illegal device; if yes, the authentication succeeds, and the optical modem is determined to be a legal device; after the authentication succeeds, the authentication server obtains service quality reference data corresponding to the optical modem from the database, instructs the OLT device that can be used for authentication to be applied to the optical modem, and uses the service quality reference data as an analysis basis for determining whether the optical modem can normally run, wherein the service quality reference data comprises a reference bit error rate, a reference time delay, a reference temperature, and a reference average value of transmit and receive power.

3. The OLT device-based optical modem authentication method of claim 1, wherein, The method of checking the quality of the OLT device to determine whether the OLT device can be used for authentication comprises the following steps: determining whether the running indicator light of the OLT device is normal: if the running indicator light is not normal, the OLT device cannot be used for authentication; if the running indicator light is normal, obtaining external state data of the OLT device, analyzing the external state data of the OLT device and external state reference data corresponding to the OLT device stored in a database to determine whether the external state data of the OLT device is normal, wherein the external state data of the OLT device comprises an average ambient temperature, an average ambient humidity, and an OLT device usage time, and the external state reference data comprises an external reference average temperature, an external reference average humidity, and an OLT device reference usage time: if the external state data of the OLT device is not normal, the OLT device cannot be used for authentication; If the OLT device external state data is normal, obtain running data of the OLT device, the running data of the OLT device including optical signal intensity, optical loss total value and link utilization rate; If the OLT device external state data is normal, obtain running allowable deviation data of the OLT device based on the OLT device external state data and the external state reference data corresponding to the OLT device stored in the database, the running allowable deviation data of the OLT device including optical signal intensity allowable deviation value, optical loss total value allowable deviation value and link utilization rate allowable deviation value; If the OLT device running state is normal, the OLT device can be used for authentication; If the OLT device running state is not normal, the OLT device cannot be used for authentication. The analysis of the OLT device external state data and the external state reference data corresponding to the OLT device stored in the database to determine whether the OLT device external state data is normal includes the following steps:

4. The OLT device-based optical modem authentication method of claim 3, wherein, The analysis of the OLT device external state data and the external state reference data corresponding to the OLT device stored in the database to obtain OLT external device state evaluation value, wherein the calculation formula of the OLT external device state evaluation value is as follows: The comparison of the OLT external device state evaluation value with the OLT external device state evaluation interval set in the database to determine whether the OLT external device state evaluation value is within the OLT external device state evaluation interval set in the database: ； In the formula, is an OLT external device state evaluation value, is an ambient average temperature, is an ambient average humidity, is an OLT device used time length, is an ambient reference average temperature, is an ambient reference average humidity, is an OLT device reference used time length, is a natural constant; If the OLT external device state evaluation value is within the OLT external device state evaluation interval set in the database, the OLT device external state data is normal; If the OLT external device state evaluation value is not within the OLT external device state evaluation interval set in the database, the OLT device external state data is not normal. The obtaining of the running allowable deviation data of the OLT device based on the OLT device external state data and the external state reference data corresponding to the OLT device stored in the database if the OLT device external state data is normal includes the following steps:

5. The OLT device-based optical modem authentication method of claim 4, wherein, Obtain the middle value of the OLT external device state evaluation interval set in the database; Obtain the deviation value of the OLT external device state evaluation value and the middle value of the OLT external device state evaluation interval set in the database; Compare the deviation value with the running allowable deviation data of the OLT device corresponding to each deviation value stored in the database to obtain the running allowable deviation data of the OLT device corresponding to the deviation value of which the comparison is successful. The judgment of whether the OLT device running state is normal based on the running data of the OLT device, the running allowable deviation data of the OLT device and the running reference data corresponding to the OLT device stored in the database includes the following steps:

6. The OLT device-based optical modem authentication method of claim 4, wherein, ​ The running data of the OLT device, the running allowable deviation data of the OLT device and the running reference data corresponding to the OLT device stored in the database are analyzed to obtain a running state evaluation index of the OLT device; The running state evaluation index of the OLT device is compared with the running state evaluation threshold of the OLT device set in the database to determine whether the running state evaluation index of the OLT device is greater than the running state evaluation threshold of the OLT device set in the database: If the running state evaluation index of the OLT device is greater than the running state evaluation threshold of the OLT device set in the database, the running state of the OLT device is abnormal; If the running state evaluation index of the OLT device is not greater than the running state evaluation threshold of the OLT device set in the database, the running state of the OLT device is normal.

7. The OLT device-based optical modem authentication method of claim 6, wherein, The calculation formula of the running state evaluation index of the OLT device is as follows: ； wherein, is an operating state evaluation index for the OLT device, is an optical signal strength, is an optical loss total value, is a link utilization rate, is an optical signal strength allowable deviation value, is an optical loss total value allowable deviation value, is a link utilization rate allowable deviation value, is an optical signal strength reference value, is an optical loss total value reference value, is a link utilization rate reference value, is an optical signal strength weight factor stored in the database, is an optical loss total value weight factor stored in the database, is a link utilization rate weight factor stored in the database.

8. The optical modem authentication method based on an OLT device according to claim 5, characterized in that, The connection stability of the optical modem and the OLT device that can be authenticated is checked to determine whether the connection of the optical modem and the OLT device that can be authenticated is stable, including the following steps: The deviation value is compared with the connection stability deviation data corresponding to each deviation value stored in the database to obtain the connection stability deviation data corresponding to the deviation value that passes the comparison, and the connection stability deviation data includes a downlink optical power deviation value, an uplink optical power deviation value, a fiber link attenuation deviation value and a connection optical signal strength deviation value; Stability data after the optical modem is connected with the OLT device that can be authenticated is obtained, and the stability data includes a downlink optical power, an uplink optical power, a fiber link attenuation and a connection optical signal strength; Stability reference data after the optical modem is connected with the OLT device that can be authenticated is obtained, and the stability reference data includes a downlink reference optical power, an uplink reference optical power, a fiber link reference attenuation and a reference connection optical signal strength; The connection stability deviation data, the stability data and the stability reference data are analyzed to obtain a connection stability evaluation index, and the calculation formula of the connection stability evaluation index is as follows: ； wherein is a connection stability evaluation index, is a downlink optical power, is an uplink optical power, is a fiber link attenuation, is a connection optical signal strength, is a downlink reference optical power, is an uplink reference optical power, is a fiber link reference attenuation, is a reference connection optical signal strength, is a downlink optical power deviation value, is an uplink optical power deviation value, is a fiber link attenuation deviation value, is a connection optical signal strength deviation value, is a natural constant; The connection stability evaluation index is compared with the connection stability evaluation threshold stored in the database to determine whether the connection stability evaluation index is greater than the connection stability evaluation threshold stored in the database: If the connection stability evaluation index is greater than the connection stability evaluation threshold stored in the database, the connection of the optical modem and the OLT device that can be authenticated is unstable; If the connection stability evaluation index is not greater than the connection stability evaluation threshold stored in the database, the connection of the optical modem and the OLT device that can be authenticated is stable.

9. The optical modem authentication method based on an OLT device according to claim 2, characterized in that, After the authentication is completed, the running state of the optical modem is checked to determine whether the optical modem can operate normally, including the following steps: Actual service quality data of the optical modem is obtained, and the actual service quality data of the optical modem includes an actual bit error rate, an actual time delay, an actual temperature and an actual average value of the transmit and receive power; The actual service quality data of the optical modem is compared and analyzed with the service quality reference data to obtain a service quality evaluation index, and the calculation formula of the service quality evaluation index is as follows: ； In the formula, is a service quality evaluation index, is an actual bit error rate, is an actual delay, is an actual temperature, is an actual average of transmit and receive power, is a reference bit error rate, is a reference delay, is a reference temperature, is a reference average of transmit and receive power; The service quality evaluation index is compared with the service quality evaluation threshold stored in the database to determine whether the service quality evaluation index is greater than the service quality evaluation threshold stored in the database: If the service quality evaluation index is greater than the service quality evaluation threshold stored in the database, the optical modem cannot operate normally; If the service quality evaluation index is not greater than the service quality evaluation threshold stored in the database, the optical modem can operate normally.

10. An OLT device-based optical modem authentication system, used for the OLT device-based optical modem authentication method of any one of claims 1-9, characterized in that: The method comprises an OLT device quality checking module, a connection stability checking module and an optical modem operation quality checking module, wherein: The OLT device quality checking module is configured to check the quality of the OLT device and determine whether the OLT device can be used for authentication. If the OLT device cannot be used for authentication, the OLT device is replaced, and it is determined again whether the replaced OLT device can be used for authentication; The connection stability checking module is configured to check the connection stability of the optical modem and the OLT device that can be used for authentication if the OLT device can be used for authentication after the optical modem is connected to the OLT device that can be used for authentication, and determine whether the connection between the optical modem and the OLT device that can be used for authentication is stable; The optical modem operation quality checking module is configured to perform authentication if the connection between the optical modem and the OLT device that can be used for authentication is stable, check the operation state of the optical modem after the authentication is completed, determine whether the optical modem can operate normally, end the process if the optical modem can operate normally, replace the optical modem if the optical modem cannot operate normally, and then determine again whether the connection between the replaced optical modem and the OLT device that can be used for authentication is stable, replace the optical modem again if the connection between the optical modem and the OLT device that can be used for authentication is unstable, and then determine again whether the connection between the replaced optical modem and the OLT device that can be used for authentication is stable.

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