A method for detecting and isolating abnormal luminescence of FTTR edge ONTs

Abstract

The present invention relates to a method for detecting and isolating abnormal light emission from an optical fiber transmission (OTN) (FTTR) edge optical terminal (ONT), belonging to the technical field of electrical digital data processing. The present invention provides a method for promptly detecting and isolating abnormally light emitting edge ONTs by cooperating with an optical fiber transmission (FTTR) edge optical terminal (ONT). The method is deployed within an 802.1 bridge composed of the FTTR gateway and the edge ONTs, uses a bridge multicast address for communication, and establishes a low-overhead and efficient processing flow between the FTTR gateway and all edge ONTs. The method is implemented in software, does not require additional hardware costs, and provides fast and reliable detection.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrical digital data processing, and in particular relates to a method for detecting and isolating abnormal luminescence of an optical network terminal (ONT) at an edge of an optical fiber transmission (FTTR). Background Art

[0002] Currently, FTTR optical gateways and edge ONTs do not support hardware abnormal light detection and isolation due to cost considerations.

[0003] Therefore, at this stage, a method for detecting and isolating abnormal luminescence of FTTR edge ONTs needs to be designed to solve the above problems. Summary of the Invention

[0004] The present invention aims to provide a method for detecting and isolating abnormal light emission at an FTTR edge ONT, thereby resolving the technical problems in the prior art. The method establishes a low-overhead and efficient processing flow between the FTTR gateway and all edge ONTs. The method is implemented in software, eliminating the need for additional hardware costs and providing fast and reliable detection.

[0005] To achieve the above object, the technical solution of the present invention is:

[0006] A method for detecting and isolating abnormal light emission at an FTTR edge ONT is deployed within an 802.1 bridge consisting of an FTTR gateway and edge ONTs. The method uses a bridged multicast address for communication and establishes a low-overhead processing flow between the FTTR gateway and all edge ONTs. The method includes the following steps:

[0007] The FTTR optical gateway collects edge router information: After the FTTR optical gateway is started, it collects the optical power transmitted by all edge routers, establishes an edge ONT authentication list, records all edge ONT information, and establishes an edge ONT registration list for all successfully registered edge ONTs. The successfully registered edge ONTs are deleted from the edge ONT authentication list.

[0008] Edge ONT network access: The edge ONT registers with the FTTR optical gateway. If registration fails, it will try to register again at a fixed interval until registration succeeds.

[0009] Edge ONT notifies its own information: After successful registration, the edge ONT notifies its own information to the FTTR optical gateway at fixed intervals;

[0010] Abnormally emitting edge ONT detection process: The FTTR optical gateway regularly checks the edge ONT authentication list and registration list. If there are both unauthenticated and successfully registered edge ONTs, the gateway further checks the number of registration failures for the unauthenticated edge ONT. If the number of registration failures exceeds the threshold and the received optical power and transmitted optical power are both within the normal range, the gateway determines that an abnormally emitting edge ONT is suspected. At fixed intervals, the gateway performs abnormal emission detection on each edge ONT in the registration list.

[0011] Abnormal light-emitting edge ONT detection process: The FTTR optical gateway sends a Slave Laser Off Test Request Message to the edge ONT to be detected, with a sending interval of 50 milliseconds and a total of 20 times. After receiving the Slave Laser Off Test Request Message, the edge ONT compares the onu-id. If the onu-id is the same, it replies with a Slave Laser Off Test Request Ack Message, repeating it every 50 milliseconds for a total of 20 times, and then turns off the light emitter for 5 seconds, and then automatically turns on the light emitter after 5 seconds; the FTTR optical gateway receives the Slave Laser Off Test Request After the Ack, the system checks whether the edge ONTs in the authentication list that have failed to register more than five times have changed to the successful registration state. This check lasts for five seconds. If all edge ONTs in the registration list with normal optical power change to the successful registration state while the detected edge ONT is off, it is preliminarily determined that the detected edge ONT has abnormal lighting. The second step is to wait for five seconds and check whether other registered edge ONTs go offline and repeat registration requests after the detected edge ONT automatically turns on again. If so, the ONT has abnormal lighting. The third step is to continuously send Slave Laser Off Request Messages to the abnormally lit edge ONT until it receives a Slave Laser Off Request Ack Message or the continuous sending of messages exceeds 15 seconds. If the detected edge ONT does not have abnormal lighting, the next ONT in the registration list is tested.

[0012] Processing flow of an edge ONT undergoing abnormal light emission detection: When an edge ONT receives a Slaser Laser Off Test Request Message in the working state, it first compares the ONU-ID. If it is not its own ONU-ID, it ignores the message. If it is the same as its own ONU-ID, it replies with a Slave Laser Off Test Request Ack Message, repeating it every 50 milliseconds for a total of 20 times, and then turns off the light emitter for 5 seconds, and then automatically turns on the light emitter after 5 seconds.

[0013] Processing flow of an edge ONT detected as having abnormal light emission: When an edge ONT receives a Slave Laser Off Request Message in the working state, it first compares the ONU-ID. If it is not its own ONU-ID, it ignores the message. If it is its own ONU-ID, it replies with a Slave Laser Off Request Ack Message, which is repeated every 50 milliseconds for a total of 20 times. The emitter is then turned off and no longer emits light signals, but it can still receive light information until the emitter is turned on again after the next device restart.

[0014] Furthermore, the edge ONT information includes: onu-id, MAC, first authentication time, last authentication time, number of authentications, and transmitted optical power.

[0015] Furthermore, the edge ONT registration list includes: onu-id, MAC, first authentication time, last authentication time, number of authentications, transmitted optical power, and received optical power.

[0016] Furthermore, the information notified by the edge ONT to the FTTR optical gateway includes: onu-id, MAC, first authentication time, last authentication time, number of authentications, transmitted optical power, and received optical power.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention provides a method for cooperating between an FTTR optical gateway and an edge ONT to promptly detect and isolate an abnormally luminous edge ONT. The method is deployed within an 802.1 bridge formed by the FTTR gateway and the edge ONTs, uses a bridge multicast address for communication, and establishes a low-overhead and efficient processing flow between the FTTR gateway and all edge ONTs. The method is implemented in software, does not require additional hardware costs, and has fast and reliable detection speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a schematic diagram of the overall process of abnormal light emission detection and isolation of an FTTR edge ONT provided by the present invention.

[0020] Figure 2 This is a flow chart of abnormal light-emitting ONT detection provided by the present invention.

[0021] Figure 3 This is a flow chart of an ONT undergoing abnormal luminescence detection provided by the present invention.

[0022] Figure 4 This is a flowchart of the processing of abnormally luminous edge ONTs provided by the present invention. DETAILED DESCRIPTION

[0023] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for the purpose of explaining the present invention and are not intended to limit the present invention. That is, the embodiments described herein are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative work shall fall within the scope of protection of the present invention. It should be noted that relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0025] Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0026] like Figure 1As shown in the figure, a method is proposed in which an FTTR optical gateway and edge ONT cooperate with each other to promptly detect and isolate edge ONTs with abnormal light emission. The method is deployed inside the 802.1 bridge composed of the FTTR gateway and edge ONTs, uses bridge multicast addresses for communication, and establishes a low-overhead and efficient processing flow between the FTTR gateway and all edge ONTs. The method is implemented in software, without increasing hardware costs, and has fast and reliable detection speed.

[0027] It includes the following processes:

[0028] The FTTR optical gateway collects edge router information: After startup, it collects the transmitted optical power of all edge routers, creates an edge ONT authentication list, and records all edge ONT information, including {ONU-ID, MAC, first authentication time, last authentication time, number of authentications, and transmitted optical power}. It also creates an edge ONT registration list for all successfully registered edge ONTs, including {ONU-ID, MAC, first authentication time, last authentication time, number of authentications, transmitted optical power, and received optical power}. Successfully registered edge ONTs are removed from the edge ONT authentication list.

[0029] Edge ONT network access: The edge ONT registers with the FTTR optical gateway. If registration fails, it will try to register again at a fixed interval (5 seconds) until registration succeeds.

[0030] Edge ONT notifies its own information: After the edge ONT successfully registers, it notifies its own information to the FTTR optical gateway at a fixed interval (10 seconds), including {ONU-ID, MAC, first authentication time, most recent authentication time, number of authentications, transmitted optical power, and received optical power}.

[0031] Abnormally lit edge ONT detection process: The FTTR optical gateway periodically checks the edge ONT authentication and registration lists (every 5 seconds). If both unauthenticated and successfully registered edge ONTs exist, the gateway further checks the number of registration failures for the unauthenticated edge ONTs. If the number of registration failures exceeds the threshold (5) and both the received and transmitted optical powers are within the normal range, the gateway determines that the edge ONT is suspected of abnormally lit. Abnormally lit edge ONTs in the registration list are then checked for each at regular intervals (5 seconds).

[0032] Abnormally illuminated edge ONT detection process: The FTTR optical gateway sends a Slave Laser Off Test Request message to the edge ONT to be detected, with an interval of 50 milliseconds for a total of 20 times. After receiving the Slave Laser Off Test Request message, the edge ONT compares the ONU-ID. If the ONU-ID is the same, it replies with a Slave Laser Off Test Request Ack message, repeating this message every 50 milliseconds for a total of 20 times. It then turns off its light emitter for 5 seconds, and then automatically turns it on again after 5 seconds. After receiving the Slave Laser Off Test Request Ack message, the FTTR optical gateway checks for 5 seconds whether any edge ONTs in the authentication list with more than 5 registration failures have changed to a successfully registered state. If all edge ONTs in the registration list with normal optical power change to a successfully registered state while the detected edge ONT is off, it is preliminarily determined that the detected edge ONT has abnormally illuminated. The next step is to wait 5 seconds and check whether other registered edge ONTs go offline and initiate registration requests again after the detected edge ONT automatically turns on again. If so, the ONT is experiencing abnormal illumination. The third step is to continuously send Slave Laser Off Request Messages to the edge ONT with abnormal light emission until it receives a Slave Laser Off Request Ack Message from the edge ONT or the continuous sending time exceeds 15 seconds. If the detected edge ONT does not have abnormal light emission, the next ONT in the registration list is tested.

[0033] Processing flow of an edge ONT undergoing abnormal light emission detection: When an edge ONT receives a Slaser Laser Off Test Request Message in the working state, it first compares the ONU-ID. If it is not its own ONU-ID, it ignores the message. If it is the same as its own ONU-ID, it replies with a Slave Laser Off Test Request Ack Message, repeating it every 50 milliseconds for a total of 20 times, and then turns off the light emitter for 5 seconds, and then automatically turns on the light emitter after 5 seconds.

[0034] Processing flow of an edge ONT detected as having abnormal light emission: When an edge ONT receives a Slave Laser Off Request Message in the working state, it first compares the ONU-ID. If it is not its own ONU-ID, it ignores the message. If it is its own ONU-ID, it replies with a Slave Laser Off Request Ack Message, which is repeated every 50 milliseconds for a total of 20 times. The emitter is then turned off and no longer emits light signals, but it can still receive light information until the emitter is turned on again after the next device restart.

[0035] The above are preferred embodiments of the present invention. Any changes made according to the technical solution of the present invention, as long as the resulting functions and effects do not exceed the scope of the technical solution of the present invention, shall fall within the scope of protection of the present invention.

Claims

1. A method for detecting and isolating abnormal luminescence of an FTTR edge ONT, characterized in that: Deployed within the 802.1 bridge consisting of the FTTR gateway and edge ONTs, it uses the bridge multicast address for communication and establishes a low-overhead processing flow between the FTTR gateway and all edge ONTs. The process includes the following steps: The FTTR optical gateway collects edge router information: After the FTTR optical gateway is started, it collects the optical power transmitted by all edge routers, establishes an edge ONT authentication list, records all edge ONT information, and establishes an edge ONT registration list for all successfully registered edge ONTs. The successfully registered edge ONTs are deleted from the edge ONT authentication list. Edge ONT network access: The edge ONT registers with the FTTR optical gateway. If registration fails, it will try to register again at a fixed interval until registration succeeds. Edge ONT notifies its own information: After successful registration, the edge ONT notifies its own information to the FTTR optical gateway at fixed intervals; Abnormally emitting edge ONT detection process: The FTTR optical gateway regularly checks the edge ONT authentication and registration lists. If there are both unauthenticated and successfully registered edge ONTs, the gateway further checks the number of registration failures for the unauthenticated edge ONT. If the number of registration failures exceeds the threshold and the received and transmitted optical powers are within the normal range, the gateway determines that an abnormally emitting edge ONT is suspected. At regular intervals, the gateway performs abnormal emission detection on each edge ONT in the registration list. Abnormal light-emitting edge ONT detection process: The FTTR optical gateway sends a Slave Laser Off Test Request Message to the edge ONT to be detected, with a sending interval of 50 milliseconds and a total of 20 times. After receiving the Slave Laser Off Test Request Message, the edge ONT compares the onu-id. If the onu-id is the same, it replies with a Slave Laser Off Test Request Ack Message, repeating it every 50 milliseconds for a total of 20 times, and then turns off the light emitter for 5 seconds, and then automatically turns on the light emitter after 5 seconds; the FTTR optical gateway receives the Slave Laser Off Test Request After the Ack, the system checks whether the edge ONTs in the authentication list that have failed to register more than five times have changed to the successful registration state. This check lasts for five seconds. If all edge ONTs in the registration list with normal optical power change to the successful registration state while the detected edge ONT is off, it is preliminarily determined that the detected edge ONT has abnormal lighting. The second step is to wait for five seconds and check whether other registered edge ONTs go offline and repeat registration requests after the detected edge ONT automatically turns on again. If so, the ONT has abnormal lighting. The third step is to continuously send Slave Laser Off Request Messages to the abnormally lit edge ONT until it receives a Slave Laser Off Request Ack Message or the continuous sending of messages exceeds 15 seconds. If the detected edge ONT does not have abnormal lighting, the next ONT in the registration list is tested. Processing flow of an edge ONT undergoing abnormal light emission detection: When an edge ONT receives a Slaser Laser Off Test Request Message in the working state, it first compares the ONU-ID. If it is not its own ONU-ID, it ignores the message. If it is the same as its own ONU-ID, it replies with a Slave Laser Off Test Request Ack Message, repeating it every 50 milliseconds for a total of 20 times, and then turns off the light emitter for 5 seconds, and then automatically turns on the light emitter after 5 seconds. Processing flow of an edge ONT detected as having abnormal light emission: When an edge ONT receives a Slave Laser Off Request Message in the working state, it first compares the ONU-ID. If it is not its own ONU-ID, it ignores the message. If it is its own ONU-ID, it replies with a Slave Laser Off Request Ack Message, which is repeated every 50 milliseconds for a total of 20 times. The emitter is then turned off and no longer emits light signals, but it can still receive light information until the emitter is turned on again after the next device restart.

2. The method for detecting and isolating abnormal luminescence of an FTTR edge ONT according to claim 1, characterized in that: Edge ONT information includes: ONU-ID, MAC, first authentication time, last authentication time, number of authentications, and transmitted optical power.

3. The method for detecting and isolating abnormal luminescence of an FTTR edge ONT according to claim 2, characterized in that: The edge ONT registration list includes: onu-id, MAC, first authentication time, last authentication time, number of authentications, transmit optical power, and receive optical power.

4. The method for detecting and isolating abnormal luminescence of an FTTR edge ONT according to claim 1, characterized in that: The information notified by the edge ONT to the FTTR optical gateway includes: onu-id, MAC, first authentication time, last authentication time, number of authentications, transmitted optical power, and received optical power.

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