Sensing message determination method and device, storage medium, and electronic device

Abstract

Embodiments of the present invention provide a sensing message determination method and device, a storage medium, and an electronic device. The method is applied to optical network units (ONUs) in a point-to-multipoint passive optical network (PON), and comprises: transmitting a detection pulse signal to optical fibers of the ONUs and an optical line terminal (OLT); receiving sensing signals generated by scattering the detection pulse signal in the optical fibers; and parsing the sensing signals to determine sensing messages at the optical fibers. By using the technical solution, the problem in related art of being unable to use optical fiber sensing technology in a point-to-multipoint PON to obtain sensing messages at ONUs is solved.

Description

Method, device, storage medium and electronic device for determining perception message

[0001] This disclosure claims priority to a Chinese patent application filed with the Patent Office of China on March 26, 2024, with application number 202410353198.5 and invention name “Method, device, storage medium and electronic device for determining perception messages,” the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0002] The present disclosure relates to the field of communications, and in particular, to a method, device, storage medium, and electronic device for determining a perception message. Background Art

[0003] Fiber optic sensing technology uses optical fibers as sensors to sense changes in the environment around the optical fiber. Existing fiber optic sensing technologies usually use the backscattered signals of the detection pulse signals for sensing, and sense the impact of changes in the environment around the optical fiber based on parameters such as the intensity, phase, and frequency of the scattered signals. One of the application scenarios of fiber optic sensing technology is in the passive optical network (PON). As the "last mile" of optical transmission technology, PON's related technologies are developing rapidly, and operators have deployed large-scale PON networks. However, for PON networks with a point-to-multipoint structure, the existing fiber optic sensing technology cannot effectively distinguish the backscattered signals of each ONU (Optical Network Unit), and thus cannot effectively obtain sensing messages from each ONU.

[0004] In the related art, there is no effective solution to the problem that optical fiber sensing technology cannot be used to obtain sensing information at each ONU in a point-to-multipoint PON network.

[0005] Summary of the Invention

[0006] The embodiments of the present disclosure provide a method, device, storage medium, and electronic device for determining a perception message, so as to at least solve the problem of being unable to obtain the perception message at each ONU using optical fiber sensing technology in a point-to-multipoint PON network.

[0007] According to one aspect of an embodiment of the present disclosure, a method for determining a perception message is provided, which is applied to each optical network unit (ONU) in a point-to-multipoint passive optical network (PON), including: transmitting a detection pulse signal to the optical fiber of the ONU and the optical line terminal (OLT); receiving a perception signal generated by scattering the detection pulse signal in the optical fiber; and parsing the perception signal to determine the perception message of the optical fiber.

[0008] According to another aspect of the embodiment of the present disclosure, a device for determining a perception message is also provided, which is applied to each optical network unit ONU in a point-to-multipoint passive optical network PON, including: a transmitting module, configured to transmit a detection pulse signal to the optical fiber of the ONU and the optical line terminal OLT; a receiving module, configured to receive a perception signal generated by the scattering of the detection pulse signal in the optical fiber; and a determination module, configured to parse the perception signal to determine the perception message of the optical fiber.

[0009] According to another aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, in which a computer program is stored, wherein the computer program is configured to execute the above-mentioned method for determining the perception message when running.

[0010] According to another aspect of an embodiment of the present disclosure, an electronic device is also provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the method for determining the perception message through the computer program.

[0011] According to another aspect of an embodiment of the present disclosure, a computer program product is further provided, including a computer program, wherein when the computer program is executed by a processor, the method for determining the perception message is implemented.

[0012] Through the present disclosure, each ONU in a point-to-multipoint PON network transmits a probe pulse signal, which then receives a sensing signal scattered from an optical fiber and analyzes the sensing signal to obtain a sensing message for the optical fiber. This solves the technical problem in related technologies where the OLT initiates a probe pulse signal, but for point-to-multipoint PON networks, it is impossible to obtain the sensing message at each ONU based on the sensing signal scattered back from the optical fiber. Through the technical solution of the embodiments of the present disclosure, multiple ONUs transmit probe pulse signals, which then receive sensing signals scattered from the optical fiber based on the probe pulse signals they send, and then analyze the sensing signals to obtain the sensing messages corresponding to each ONU. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present disclosure. The exemplary embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation of the present disclosure. In the drawings:

[0014] FIG1 is a block diagram of the hardware structure of an ONU according to a method for determining a perception message according to an embodiment of the present disclosure;

[0015] FIG2 is a flowchart of a method for determining a perception message according to an embodiment of the present disclosure;

[0016] FIG3 is a schematic diagram of the principle of an optical fiber sensor according to an embodiment of the present disclosure;

[0017] FIG4 is a schematic diagram of an improved method for determining a perception message according to an embodiment of the present disclosure;

[0018] FIG5 is a schematic diagram of an architecture according to an optional embodiment of the present disclosure;

[0019] FIG6 is a schematic diagram of power control and wavelength control according to an optional embodiment of the present disclosure;

[0020] FIG7 is a schematic diagram of the specific structure of a signal sending module according to an optional embodiment of the present disclosure;

[0021] FIG8 is a schematic diagram of the specific structure of a signal receiving module according to an optional embodiment of the present disclosure;

[0022] FIG9 is a schematic diagram of a specific structure of a digital signal processing module according to an optional embodiment of the present disclosure;

[0023] FIG10 is a message interaction flow chart (I) according to an optional embodiment of the present disclosure;

[0024] 11 is a schematic diagram of the specific structure of the perception configuration PLOAM message according to an optional embodiment of the present disclosure;

[0025] 12 is a schematic diagram of the specific structure of the perception activation PLOAM message according to an optional embodiment of the present disclosure;

[0026] 13 is a schematic diagram of the specific structure of the perception alarm PLOAM message according to an optional embodiment of the present disclosure;

[0027] 14 is a schematic diagram of the specific structure of the perception channel PLOAM message according to an optional embodiment of the present disclosure;

[0028] FIG15 is a message interaction flow chart (II) according to an optional embodiment of the present disclosure;

[0029] 16 is a schematic diagram of the specific structure of the perception configuration OMCI message according to an optional embodiment of the present disclosure;

[0030] 17 is a schematic diagram of the specific structure of the perception activation OMCI message according to an optional embodiment of the present disclosure;

[0031] 18 is a schematic diagram of the specific structure of the perception alarm OMCI message according to an optional embodiment of the present disclosure;

[0032] 19 is a schematic diagram of the specific structure of the perception channel OMCI message according to an optional embodiment of the present disclosure;

[0033] FIG20 is a structural block diagram of a device for determining a perception message according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the solutions of the present disclosure, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present disclosure.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0036] The method embodiments provided in the embodiments of the present disclosure can be executed in an ONU or similar computing device. Taking operation on an ONU as an example, FIG1 is a block diagram of the hardware structure of an ONU for the method for determining a perception message according to the embodiments of the present disclosure. As shown in FIG1 , the ONU may include one or more (only one is shown in FIG1 ) processors 102 (processor 102 may include, but is not limited to, a microprocessor (MPU) or a programmable logic device (PLD)) and a memory 104 configured to store data. In an exemplary embodiment, the ONU may also include a transmission device 106 configured to perform communication functions and input / output devices 108. Those skilled in the art will appreciate that the structure shown in FIG1 is merely illustrative and does not limit the structure of the ONU. For example, the ONU may include more or fewer components than those shown in FIG1 , or have a different configuration with equivalent functionality or more functionality than that shown in FIG1 .

[0037] The memory 104 can be configured to store computer programs, such as software programs and modules of application software, such as the computer program corresponding to the method for determining a perception message in the embodiments of the present disclosure. The processor 102 executes the computer program stored in the memory 104 to execute various functional applications and data processing, thereby implementing the aforementioned method. The memory 104 can include high-speed random access memory and non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 can further include memory remotely located relative to the processor 102, and these remote memories can be connected to the ONU via a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0038] The transmission device 106 is configured to receive or transmit data via a network. A specific example of the aforementioned network may include a wireless network provided by the ONU's communications provider. In one embodiment, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to enable communication with the Internet. In another embodiment, the transmission device 106 may be a radio frequency (RF) module configured to communicate with the Internet wirelessly.

[0039] FIG2 is a flow chart of a method for determining a perception message according to an embodiment of the present disclosure, which is applied to each optical network unit (ONU) in a point-to-multipoint passive optical network (PON). As shown in FIG2 , the method includes the following steps:

[0040] Step S202: transmitting a detection pulse signal to the optical fiber of the ONU and the optical line terminal OLT (Optical Line Terminal).

[0041] Step S204: receiving a sensing signal generated by the detection pulse signal being scattered in the optical fiber.

[0042] Step S206: parse the sensing signal to determine the sensing message of the optical fiber.

[0043] Through the present disclosure, each ONU in a point-to-multipoint PON network transmits a probe pulse signal, which then receives a sensing signal scattered from an optical fiber and analyzes the sensing signal to obtain a sensing message for the optical fiber. This solves the technical problem in related technologies where the OLT initiates a probe pulse signal, but for point-to-multipoint PON networks, it is impossible to obtain the sensing message at each ONU based on the sensing signal scattered back from the optical fiber. Through the technical solution of the embodiments of the present disclosure, multiple ONUs transmit probe pulse signals, which then receive sensing signals scattered from the optical fiber based on the probe pulse signals they send, and then analyze the sensing signals to obtain the sensing messages corresponding to each ONU.

[0044] In an exemplary embodiment, before transmitting the detection pulse signal to the optical fiber of the ONU and the optical line terminal OLT, the method further includes: receiving a perception configuration message sent by the OLT, wherein the perception configuration message is used to indicate the pulse parameters of the detection pulse signal; configuring the detection pulse signal according to the pulse parameters in the perception configuration message; and, if the configuration of the detection pulse signal is completed, sending a confirmation message to the OLT, wherein the confirmation message is used to indicate that the configuration of the detection pulse signal is completed.

[0045] That is, before sending a probe pulse signal, the ONU needs to first determine the pulse parameters of the probe pulse signal and then transmit the probe pulse signal according to the configured pulse parameters. Optionally, the pulse parameters can be determined based on a sensing configuration message sent by the OLT. After configuring the probe pulse signal according to the pulse parameters, a confirmation message needs to be sent to the OLT to inform the OLT that the probe pulse signal configuration on the ONU side is complete.

[0046] In an optional embodiment of the present disclosure, the perception configuration message may be a perception configuration PLOAM (Physical Layer Operations and Maintenance Channel) message, or a perception configuration OMCI (ONU Management and Control Interface) message. Then, when the perception configuration message is a perception configuration PLOAM message, or a perception configuration OMCI message, the perception configuration PLOAM message or the perception configuration OMCI message sent by the OLT is received to parse out the pulse parameters carried by the perception configuration PLOAM message or the perception configuration OMCI message, wherein the pulse parameters include: the transmission power of the detection pulse signal, the pulse period of the detection pulse signal, and the pulse length of the detection pulse signal.

[0047] After the ONU receives the pulse parameters and configures the detection pulse signal based on them, it still needs to determine whether to use the detection pulse signal. This means the ONU is in the detection pulse signal preparation phase and activates the sensing function only after receiving the sensing activation message from the OLT.

[0048] In an exemplary embodiment, before transmitting the detection pulse signal to the optical fiber of the ONU and the optical line terminal OLT, the method further includes: receiving a perception activation message sent by the OLT, wherein the perception activation message is used to turn on or off the perception function of the ONU; turning on or off the perception function according to an instruction of the perception activation message; and when the perception function is turned on or off, sending a response message to the OLT, wherein the response message is used to indicate that the perception function is turned on or off.

[0049] It should be noted that the perception function of the embodiment of the present disclosure mainly refers to the following functional steps: emitting a detection pulse signal, receiving a perception signal generated by the scattering of the detection pulse signal in the optical fiber, and then parsing the perception message from the perception signal. Turning on the perception function means: turning on the narrowband laser and optical modulator provided in the ONU to generate the detection pulse signal; receiving the perception signal through the coherent receiver provided in the ONU; parsing the perception signal through the digital signal processing module provided in the ONU to determine the perception message of the optical fiber. Turning off the perception function means: prohibiting the ONU from emitting a detection pulse signal, receiving the perception signal generated by the scattering of the detection pulse signal in the optical fiber, and then parsing the perception message from the perception signal.

[0050] In an exemplary embodiment, receiving the perception activation message sent by the OLT includes: when the perception activation message is a perception activation PLOAM message or a perception activation OMCI message, receiving the perception activation PLOAM message or the perception activation OMCI message sent by the OLT to parse out the perception parameters carried by the perception activation PLOAM message or the perception activation OMCI message, wherein the perception parameters include: perception mode, perception type, perception threshold, and threshold type.

[0051] After receiving the perception message, you can perform one of the following solutions:

[0052] 1. When it is determined according to the perception message that the degree of environmental change of the optical fiber is greater than a preset threshold, a perception alarm message is sent to the OLT; a perception activation message is received from the OLT based on the alarm message, and the perception function of the ONU is turned off according to the perception activation message.

[0053] 2. When it is determined according to the perception message that the degree of environmental change of the optical fiber is greater than a preset threshold, a perception alarm message is sent to the OLT; when the OLT does not allocate bandwidth for transmitting the perception activation message to the ONU, a perception channel message is received from the OLT based on the alarm message; an allocated bandwidth identifier is parsed from the perception channel message, and the perception signal is sent to the OLT according to the bandwidth corresponding to the allocated bandwidth identifier.

[0054] 3. Receive the perception channel message periodically sent by the OLT; parse the allocated bandwidth identifier from the perception channel message, and send the perception signal to the OLT according to the bandwidth corresponding to the allocated bandwidth identifier.

[0055] Optionally, when the perception alarm message is a perception alarm PLOAM message or a perception alarm OMCI message, the perception alarm PLOAM message or the perception alarm OMCI message sent by the OLT is received to parse out the perception function carried by the perception alarm PLOAM message or the perception alarm OMCI message.

[0056] To better understand the technical solutions of the disclosed embodiments, the disclosed embodiments illustrate the principles of fiber optic sensing technology. As shown in Figure 3, in fiber optic sensing technology, a narrowband laser and an optical modulator are typically used to generate a probe pulse. The probe pulse is then sent into the optical fiber. Each point in the optical fiber generates a reverse scattering signal, and environmental changes around the optical fiber affect the relevant parameters of the probe pulse scattering signal. The scattered signal is analyzed with the probe pulse by a circulator, then mixed with the local oscillator light source and passed through a receiving module. Finally, the sensing message is obtained through signal processing technology.

[0057] In an optional embodiment of the present disclosure, a sensing method applicable to a point-to-multipoint (PON) network is proposed in the context of a coherent passive optical network. As shown in Figure 4, the main technical solutions of the present disclosure include improvements to the PON system architecture and the overall management and control process.

[0058] 1. In terms of the PON system architecture, in order to solve the problem of aliasing in multiple ONU branches, the embodiment of the present disclosure integrates the perception function on the ONU side, and realizes the functions of perception pulse transmission, perception signal reception and perception message parsing on the ONU side.

[0059] 2. In terms of the overall management and control process, in order to be compatible with the PON network transmission layer protocol, the management and control of the perception function in the embodiments of the present disclosure are all implemented based on the management and control channels of the existing PON network. The main functions of the management and control include: configuration of pulse parameters, turning on / off the perception function, notification of perception messages, etc.

[0060] Two optional embodiments are provided below to illustrate the improvements to the PON system architecture and overall management and control process.

[0061] Optional embodiment 1

[0062] Figure 5 is a schematic diagram of the system architecture of Optional Embodiment 1 of the present disclosure. As shown in Figure 5, narrowband lasers and optical modulators are added to each of the multiple ONUs. Optionally, to implement sensing pulse emission on the ONU side, a narrowband laser and optical modulator are integrated into the ONU to generate a probe pulse signal. The subsequent signal enters the optical fiber through an optical splitter. As shown in Figure 6, the probe signal requires power and wavelength control.

[0063] Regarding power control: The optical splitter and long-distance fiber feeder in the point-to-multipoint PON network will introduce large optical power loss. After the detection signal passes through the PON network, its own power and the scattered signal power will become very small, and will become a noise signal that cannot be received by the optical detector. Therefore, by limiting the transmission power of the detection pulse, the sensing range can be effectively controlled, which can also effectively reduce the impact of the detection pulse light on the OLT receiving upstream services.

[0064] For wavelength control: The wavelength of the probe pulse needs to be set to a value adjacent to the wavelength of the downlink service light (typically 50 GHz). This setting ensures that the downlink service light and the backscattered light are in adjacent positions in the spectrum.

[0065] Based on the scheme shown in Figure 5, the ONU side implements the functions of sending detection pulse signals, receiving perception signals, and parsing perception messages. The detection pulse signals are transmitted by the signal transmission module on the multiplexing ONU side, the perception signals are received by the signal receiving module on the multiplexing ONU side, and the perception signals are parsed by the digital signal processing module on the multiplexing ONU side. Because the downlink service light and the backscattered light are in adjacent positions on the spectrum, a multi-carrier reception method can be used to simultaneously receive the downlink service light and the backscattered light. Figure 7 shows the specific structure of the signal transmission module, Figure 8 shows the specific structure of the signal receiving module, and Figure 9 shows the specific structure of the digital signal processing module.

[0066] Based on the above PON system architecture diagram, the overall control process of the optional embodiment 1 of the present disclosure is implemented through PLOAM messages in the PON network. The specific message interaction process is shown in Figure 10.

[0067] As shown in FIG10 , the PON network perception method proposed in Optional Embodiment 1 of the present disclosure is implemented based on PLOAM message interaction between the OLT and the ONU. The interaction process can be divided into three stages: a perception configuration stage, a perception activation stage, and a message collection stage. The message interaction process between the OLT and the ONU is shown in FIG10 and is described in detail as follows:

[0068] The first stage: the perception configuration stage, which is used to configure the pulse parameters, includes the following steps:

[0069] Step 1: The OLT specifies the probe pulse parameters used in the sensing process by sending a sensing configuration PLOAM message in a downstream frame, as shown in Figure 11.

[0070] Step 2: After receiving the perception configuration PLOAM message, the ONU configures the detection pulse parameters and sends a confirmation PLOAM message to the OLT after the configuration is completed.

[0071] It should be noted that the perception configuration PLOAM message in FIG11 is used to indicate relevant parameters of the detection pulse signal. In FIG11:

[0072] 1) The message type ID field is used to identify this type of PLOAM message.

[0073] 2) The pulse parameter field includes but is not limited to: transmit power, pulse period, and pulse length.

[0074] 3) Transmit power: The transmit power value of the narrowband laser at the ONU affects the coverage length of the sensing function and is used to eliminate the impact on the OLT.

[0075] 4) Pulse period: AOM parameter, corresponding to the time interval between two detection pulses. It is the default value if no setting is made.

[0076] 5) Pulse length: The duration of a detection pulse in time, which affects the spatial resolution of the perception function. It is the default value when no setting is made.

[0077] The second stage, the perception activation stage, is used to enable / disable the perception function, configure the perception target, and set the perception message reporting method. It includes the following steps:

[0078] Step 1: The OLT enables / disables the sensing function of a specific ONU by sending a sensing activation PLOAM message and configures the sensing mode. The format of the sensing activation PLOAM message is shown in Figure 12.

[0079] Step 2: After receiving the PLOAM message from the OLT, the ONU turns on / off its own sensing function and sends a confirmation PLOAM message to the OLT.

[0080] Optionally, enabling the sensing function involves enabling a narrowband laser and optical modulator to generate a detection pulse, receiving the sensing optical signal using a coherent receiver, and processing the sensing signal using a digital signal processing module to obtain a sensing message. Optionally, disabling the sensing function involves disabling the narrowband laser and optical modulator, and causing the digital signal processing module to not process the signal in the wavelength band corresponding to the detection pulse.

[0081] It should be noted that the perception activation PLOAM message in FIG12 is used to activate / deactivate the perception function of the ONU and specify relevant parameters in the perception process. As shown in FIG12:

[0082] 1) The message type ID field is used to identify this type of PLOAM message.

[0083] 1) The indicator bit field is a mandatory field, indicating whether the sensing function is on or off. When it is set to 1, it indicates that the sensing function is on; when it is set to 0, it indicates that the sensing function is off.

[0084] 3) The perception parameter field is a mandatory field, including but not limited to: perception mode, perception type, perception threshold, and threshold type.

[0085] The "Perception Mode" field indicates the mode in which the ONU reports perception messages. When the "Perception Mode" field is set to 0, Perception Mode 1 is used, corresponding to the ONU triggering alarm messages based on thresholds, and the OLT recording anomalies. When the "Perception Mode" field is set to 1, Perception Mode 2 is used, corresponding to the ONU triggering alarm messages based on thresholds, and the OLT allocates bandwidth for ONU perception signal reporting. When the "Perception Mode" field is set to 2, Perception Mode 3 is used, corresponding to the OLT allocating bandwidth on demand (periodically) for perception signal reporting.

[0086] The sensing type is an optional field. It indicates the type of the sensing message parsed by the ONU. When it is set to 0, it indicates vibration sensing; when it is set to 1, it indicates temperature sensing.

[0087] The perception threshold is an optional field. It takes effect in perception modes 1 and 2 and is ignored in perception mode 3.

[0088] The Threshold Type field is optional. It specifies the maximum and minimum values ​​for the "sensing threshold." When set to 1, it indicates the maximum value; when set to 0, it indicates the minimum value. This field is effective in sensing modes 1 and 2 and is ignored in sensing mode 3.

[0089] The third stage: the perception message collection stage, which is used to realize the alarm of perception results / upload perception data. In the perception message collection stage, there are mainly the following modes:

[0090] Mode 1

[0091] Step 1: The ONU compares the values ​​of the perception message. After determining that the environmental change exceeds the threshold based on the comparison result, the ONU sends an uplink perception alarm PLOAM message.

[0092] Step 2: After receiving the PLOAM message, the OLT records the abnormal environment at the ONU.

[0093] Step 3: The OLT sends a PLOAM message to instruct the ONU to disable the sensing function.

[0094] Step 4: The ONU receives the activation PLOAM message, turns off its own sensing function, and sends a confirmation PLOAM message to the OLT.

[0095] Mode 2

[0096] Step 1: The ONU compares the values ​​of the perception message. After determining that the environmental change exceeds the threshold based on the result of the numerical comparison, the ONU sends an uplink perception alarm PLOAM message, as shown in Figure 13.

[0097] Step 2: After receiving the PLOAM message, the OLT records the abnormal environment at the ONU.

[0098] Step 3: The OLT configures the upload bandwidth for sensing data to the ONU in the BWmap field of the downstream frame. The OLT can also send a sensing channel PLOAM message to inform the ONU of the Alloc-ID of the allocated bandwidth.

[0099] Step 4: After receiving the PLOAM message of the sensing channel, the ONU uses the bandwidth corresponding to the specified Alloc-ID to upload the sensing signal;

[0100] Step 5: After receiving the sensing signal, the OLT performs subsequent signal processing and data analysis;

[0101] Step 6: The OLT sends a PLOAM message to instruct the ONU to disable the sensing function.

[0102] Step 7: The ONU receives the activation PLOAM message, turns off its own sensing function, and sends a confirmation PLOAM message to the OLT.

[0103] Mode 3:

[0104] Step 1: The OLT sends a channel awareness PLOAM message according to its own needs (optionally, periodically).

[0105] Step 2: After receiving the PLOAM message of the sensing channel, the ONU uses the bandwidth corresponding to the specified Alloc-ID to upload the sensing signal;

[0106] Step 3: After receiving the sensing signal, the OLT performs subsequent signal processing and data analysis;

[0107] Step 4: The OLT sends a sensing activation PLOAM message to instruct the ONU to disable the sensing function;

[0108] Step 5: The ONU receives the activation PLOAM message, turns off its own sensing function, and sends a confirmation PLOAM message to the OLT.

[0109] FIG13 shows a schematic diagram of a perception alarm PLOAM message. As shown in FIG13 , the perception alarm PLOAM message is used to inform the OLT that an abnormality has occurred in the perception message and requires the OLT to operate according to the instruction message. As shown in FIG13 :

[0110] 1) The message type ID field is used to identify this type of PLOAM message.

[0111] 2) The perception mode is the same as the perception mode of the perception activation PLOAM message and is a mandatory field.

[0112] As shown in Figure 14, the channel perception PLOAM message is used in perception mode 2. The OLT uses this message to inform the ONU to use it for uplink perception signal channels.

[0113] 1) The message type ID field is used to identify this type of PLOAM message.

[0114] 2) Channel messages include but are not limited to Alloc-ID. The Alloc-ID field is mandatory.

[0115] Optional embodiment 2

[0116] Based on the system architecture shown in Figure 5, in order to realize the transmission of the detection pulse signal on the ONU side, it is necessary to additionally integrate a narrowband laser machine and an optical modulator in the ONU to generate the detection pulse signal, and the signal will enter the optical fiber through the optical splitter. The detection signal needs to be power controlled and wavelength controlled. Regarding power control: the optical splitter and long-distance optical fiber feeder in the point-to-multipoint PON network will introduce a large optical power loss. After the detection pulse passes through the PON network, its own power and the scattered signal power will become very small, and it will become a noise signal that cannot be received by the optical detector. Therefore, by limiting the detection pulse transmission power, the perception range can be effectively controlled, and the impact of the detection pulse light on the OLT receiving the upstream service can also be effectively reduced. Regarding wavelength control: the wavelength of the detection pulse needs to be set to a value adjacent to the wavelength of the downstream service light (typical value is 50GHz). This setting can ensure that the downstream service light and the backscattered light are in adjacent positions in the spectrum.

[0117] Based on the scheme shown in Figure 5, the ONU side implements the functions of sending detection pulse signals, receiving perception signals, and parsing perception messages. The detection pulse signals are transmitted by the signal transmission module on the multiplexing ONU side, the perception signals are received by the signal receiving module on the multiplexing ONU side, and the perception signals are parsed by the digital signal processing module on the multiplexing ONU side. Because the downlink service light and the backscattered light are in adjacent positions on the spectrum, a multi-carrier reception method can be used to simultaneously receive the downlink service light and the backscattered light. Figure 7 shows the specific structure of the signal transmission module, Figure 8 shows the specific structure of the signal receiving module, and Figure 9 shows the specific structure of the digital signal processing module.

[0118] Based on the above-mentioned PON system architecture diagram, the overall control process of the optional embodiment 2 of the present disclosure is implemented through OMCI messages in the PON network. The specific message interaction process is shown in Figure 15.

[0119] The PON network perception method proposed in Optional Embodiment 2 of the present disclosure is implemented based on OMCI message interaction between the OLT and the ONU. The interaction process can be divided into three stages: perception configuration stage, perception activation stage, and message collection stage. The message interaction process between the OLT and the ONU is shown in the accompanying figure and is described in detail as follows:

[0120] Perception configuration phase: configuration of pulse parameters

[0121] 1. The OLT sends a perception configuration OMCI message (as shown in Figure 16) to specify the detection pulse parameters used in the perception process and configure the corresponding pulse parameters;

[0122] 2. The ONU receives the perception configuration OMCI message, configures the detection pulse parameters, and sends a response OMCI message after the configuration is completed.

[0123] Perception activation stage: realizing the opening / closing of the perception function, the configuration of the perception target, and the setting of the perception message reporting method

[0124] 1. The OLT enables / disables the sensing function of a specific ONU by sending a sensing activation OMCI message and configures the sensing mode. The format of the sensing activation OMCI message is shown in Figure 17.

[0125] 2. After receiving the OMCI message from the OLT, the ONU turns its sensing function on / off and sends a response OMCI message. Enabling the sensing function involves turning on the narrowband laser and optical modulator to generate a detection pulse signal, using a coherent receiver to receive the sensing optical signal, and using the digital signal processing module to process the sensing signal and obtain the sensing message. Disabling the sensing function involves turning off the narrowband laser and optical modulator, and the digital signal processing module not processing the signal in the wavelength band corresponding to the detection pulse.

[0126] Perception message collection phase: realizing the alarm of perception results / uploading of perception data

[0127] Mode 1

[0128] 1. The ONU compares the values ​​of the perception message and sends an uplink perception alarm OMCI message when it finds that the environmental change exceeds the threshold.

[0129] 2. After receiving the OMCI message (as shown in Figure 18), the OLT records the abnormal environment at the ONU.

[0130] 3. The OLT sends a sensing activation OMCI message to specify the ONU to turn off the sensing function;

[0131] 4. The ONU receives the activation OMCI message, turns off its own sensing function, and sends a response OMCI message to the OLT.

[0132] Mode 2

[0133] 1. The ONU compares the values ​​of the perception message and sends an uplink perception alarm OMCI message when it finds that the environmental change exceeds the threshold.

[0134] 2. After receiving the OMCI message, the OLT records the abnormal environment at the ONU.

[0135] The OLT configures the upload bandwidth for sensing data to the ONU in the BWmap field of the downstream frame. The OLT also sends a sensing channel OMCI message to inform the ONU of the Alloc-ID of the allocated bandwidth.

[0136] 4. After receiving the OMCI message of the perception channel, the ONU uses the bandwidth corresponding to the specified Alloc-ID to upload the perception signal;

[0137] 5. After receiving the sensing signal, the OLT performs further signal processing and data analysis;

[0138] 6. The OLT sends a sensing activation OMCI message to specify the ONU to turn off the sensing function;

[0139] 7. The ONU receives the activation OMCI message, turns off its own sensing function, and sends a response OMCI message to the OLT.

[0140] Mode 3:

[0141] 1. The OLT sends the OMCI message according to its own needs (optionally, periodically);

[0142] 2. After receiving the OMCI message of the perception channel, the ONU uses the bandwidth corresponding to the specified Alloc-ID to upload the perception signal;

[0143] 3. After receiving the sensing signal, the OLT performs subsequent signal processing and data analysis;

[0144] 4. The OLT sends a sensing activation OMCI message to specify the ONU to turn off the sensing function;

[0145] 5. The ONU receives the activation OMCI message, turns off its own sensing function, and sends a response OMCI message to the OLT.

[0146] Accompanying drawing 16 shows the specific structure of the perception configuration OMCI message, as shown in Figure 16:

[0147] 1) The message type ID field is set to set message.

[0148] 2) The pulse parameter field includes but is not limited to: transmit power, pulse period, and pulse length.

[0149] Transmit power: The transmit power value of the narrowband laser at the ONU affects the coverage length of the sensing function. This is a mandatory field used to eliminate the impact on the OLT.

[0150] Pulse period: AOM parameter, corresponding to the time interval between two detection pulses. This is an optional field and is the default value if not set.

[0151] Pulse length means the duration of a detection pulse in time, which affects the spatial resolution of the perception function. It is an optional field and is the default value when not set.

[0152] Accompanying drawing 17 shows the concrete structure of perception activation OMCI message, and perception activation OMCI message is used to activate / close the perception function of ONU and specify the relevant parameters in the perception process. As shown in Figure 17, comprising:

[0153] 1. The message type ID field is set to set message.

[0154] 2. The indicator bit field indicates whether the sensing function is on or off. When it is set to 1, it indicates that the sensing function is on; when it is set to 0, it indicates that the sensing function is off. It is a mandatory field.

[0155] 3. The perception parameter fields include but are not limited to: perception mode, perception type, perception threshold, and threshold type.

[0156] The sensing mode indicates the mode in which the ONU reports sensing messages. When the sensing mode is set to 0, sensing mode 1 is used, corresponding to the ONU triggering alarm messages based on thresholds, and the OLT records abnormalities. When it is set to 1, sensing mode 2 is used, corresponding to the ONU triggering alarm messages based on thresholds, and the OLT allocates bandwidth for ONU sensing signal reporting. When it is set to 2, sensing mode 3 is used, corresponding to the OLT allocating bandwidth on demand (periodically) for sensing signal reporting. This is a mandatory field.

[0157] Sensing Type: The type of the sensing message parsed by the ONU. When set to 0, it indicates vibration sensing; when set to 1, it indicates temperature sensing. This is an optional field.

[0158] The perception threshold is effective in perception modes 1 and 2 and is ignored in perception mode 3. It is an optional field.

[0159] Threshold Type: Specifies the maximum / minimum value for the sensing threshold. When set to 1, it indicates the maximum value; when set to 0, it indicates the minimum value. This field is valid in sensing modes 1 and 2 and is ignored in sensing mode 3. It is optional.

[0160] FIG18 shows a schematic diagram of the structure of the perception alarm OMCI message. As shown in FIG18 , the perception alarm OMCI message is used to inform the OLT that an abnormality occurs in the perception message and requires the OLT to perform operations according to the instruction message.

[0161] 1) The message type ID field is set to alarm message.

[0162] 2) The perception mode is the same as the perception mode of the perception activation PLOAM message and is a mandatory field.

[0163] Figure 19 shows a schematic diagram of the structure of the perception channel OMCI message, which is used in perception mode 2. The OLT uses this message to inform the ONU to use it for the uplink perception signal channel.

[0164] 1) The message type ID field is set to set message.

[0165] 2) Channel messages include but are not limited to Alloc-ID, of which the Alloc-ID field is mandatory.

[0166] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus the necessary general hardware platform, and of course it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present disclosure, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a readable storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of the present disclosure.

[0167] This embodiment also provides a device for determining a perception message, which is applied to each optical network unit (ONU) in a point-to-multipoint passive optical network (PON). This device is configured to implement the above-described embodiments and preferred implementations, and details already described are omitted. As used below, the term "module" may refer to a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation using hardware, or a combination of software and hardware, is also possible and contemplated.

[0168] FIG20 is a block diagram of a device for determining a perception message according to an embodiment of the present disclosure. As shown in FIG20 , the device for determining a perception message includes:

[0169] The transmitting module 202 is configured to transmit a detection pulse signal to the optical fiber of the ONU and the optical line terminal OLT;

[0170] A receiving module 204 is configured to receive a sensing signal generated by the detection pulse signal being scattered in the optical fiber;

[0171] The determination module 206 is configured to parse the perception signal to determine the perception message of the optical fiber.

[0172] Through the present disclosure, each ONU in a point-to-multipoint PON network transmits a probe pulse signal, which then receives a sensing signal scattered from an optical fiber and analyzes the sensing signal to obtain a sensing message for the optical fiber. This solves the technical problem in related technologies where the OLT initiates a probe pulse signal, but for point-to-multipoint PON networks, it is impossible to obtain the sensing message at each ONU based on the sensing signal scattered back from the optical fiber. Through the technical solution of the embodiments of the present disclosure, multiple ONUs transmit probe pulse signals, which then receive sensing signals scattered from the optical fiber based on the probe pulse signals they send, and then analyze the sensing signals to obtain the sensing messages corresponding to each ONU.

[0173] In an exemplary embodiment, the receiving module 204 is further configured to receive a perception configuration message sent by the OLT, wherein the perception configuration message is used to indicate the pulse parameters of the detection pulse signal; configure the detection pulse signal according to the pulse parameters in the perception configuration message; and send a confirmation message to the OLT when the configuration of the detection pulse signal is completed, wherein the confirmation message is used to indicate that the configuration of the detection pulse signal is completed.

[0174] That is, before the ONU sends the detection pulse signal, it needs to first determine the pulse parameters of the detection pulse signal, and then send the detection pulse signal according to the configured pulse parameters.

[0175] In an exemplary embodiment, the receiving module 204 is further configured to receive the perception configuration PLOAM message or the perception configuration OMCI message sent by the OLT when the perception configuration message is a perception configuration physical layer operation management and maintenance PLOAM message or a perception configuration optical network unit management and control interface OMCI message, so as to parse out the pulse parameters carried by the perception configuration PLOAM message or the perception configuration OMCI message, wherein the pulse parameters include: the transmission power of the detection pulse signal, the pulse period of the detection pulse signal, and the pulse length of the detection pulse signal.

[0176] In an exemplary embodiment, the receiving module 204 is further configured to receive a perception activation message sent by the OLT, wherein the perception activation message is used to turn on or off the perception function of the ONU; turn on or off the perception function according to the instruction of the perception activation message; and send a response message to the OLT when the perception function is turned on or off, wherein the response message is used to indicate that the perception function is turned on or off.

[0177] It should be noted that the perception function of the embodiment of the present disclosure mainly refers to the following steps: transmitting a detection pulse signal, receiving a perception signal generated by the detection pulse signal scattered in the optical fiber, and then parsing the perception message from the perception signal.

[0178] In an exemplary embodiment, the receiving module 204 is further configured to receive the perception activation PLOAM message or the perception activation OMCI message sent by the OLT when the perception activation message is a perception activation PLOAM message or a perception activation OMCI message, so as to parse out the perception parameters carried by the perception activation PLOAM message or the perception activation OMCI message, wherein the perception parameters include: perception mode, perception type, perception threshold, and threshold type.

[0179] In an exemplary embodiment, the receiving module 204 is further configured to turn on the narrowband laser and optical modulator provided in the ONU to generate the detection pulse signal; receive the perception signal through the coherent receiver provided in the ONU; and parse the perception signal through the digital signal processing module provided in the ONU to determine the perception message of the optical fiber.

[0180] In an exemplary embodiment, the transmitting module 202 is further configured to send a perception alarm message to the OLT when it is determined that the degree of environmental change of the optical fiber is greater than a preset threshold based on the perception message; receive a perception activation message sent by the OLT based on the alarm message, and shut down the perception function of the ONU according to the perception activation message.

[0181] In an exemplary embodiment, the transmitting module 202 is further configured to send a perception alarm message to the OLT when it is determined that the degree of environmental change of the optical fiber is greater than a preset threshold based on the perception message; receive a perception channel message sent by the OLT based on the alarm message when the OLT does not allocate bandwidth for transmitting the perception activation message to the ONU; parse the allocated bandwidth identifier from the perception channel message, and send the perception signal to the OLT according to the bandwidth corresponding to the allocated bandwidth identifier.

[0182] In an exemplary embodiment, the receiving module 204 is further configured to receive a sensing channel message periodically sent by the OLT; parse the allocated bandwidth identifier from the sensing channel message, and send the sensing signal to the OLT according to the bandwidth corresponding to the allocated bandwidth identifier.

[0183] In an exemplary embodiment, the receiving module 204 is further configured to receive the perception alarm PLOAM message or the perception alarm OMCI message sent by the OLT when the perception alarm message is a perception alarm PLOAM message or a perception alarm OMCI message, so as to parse out the perception function carried by the perception alarm PLOAM message or the perception alarm OMCI message.

[0184] In an exemplary embodiment, the computer-readable storage medium may include, but is not limited to, various media that can store computer programs, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk, or an optical disk.

[0185] For specific examples in this embodiment, reference may be made to the examples described in the above embodiments and exemplary implementation modes, and this embodiment will not be described in detail here.

[0186] An embodiment of the present disclosure further provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to perform the steps in any of the above method embodiments.

[0187] Optionally, in this embodiment, the processor may be configured to execute the following steps through a computer program:

[0188] S1, transmitting a detection pulse signal to the optical fiber of the ONU and the optical line terminal OLT.

[0189] S2, receiving a sensing signal generated by the detection pulse signal being scattered in the optical fiber.

[0190] S3: parse the sensing signal to determine the sensing message of the optical fiber.

[0191] In an exemplary embodiment, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor, and the input / output device is connected to the processor.

[0192] Optionally, in this embodiment, the electronic device may also be configured to execute steps S1, S2 and S3 via a computer program.

[0193] For specific examples in this embodiment, reference may be made to the examples described in the above embodiments and exemplary implementation modes, and this embodiment will not be described in detail here.

[0194] Obviously, those skilled in the art should understand that the modules or steps of the present disclosure described above can be implemented using a general-purpose computing device, they can be concentrated on a single computing device, or distributed across a network composed of multiple computing devices, they can be implemented using program code executable by the computing device, and thus, they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be performed in a different order than herein, or they can be fabricated into separate integrated circuit modules, or multiple modules or steps can be fabricated into a single integrated circuit module for implementation. Thus, the present disclosure is not limited to any particular combination of hardware and software.

[0195] The foregoing description is merely a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Those skilled in the art will readily appreciate that various modifications and variations of the present disclosure are possible. Any modifications, equivalent substitutions, or improvements made within the principles of the present disclosure shall be included within the scope of protection of the present disclosure.

Claims

1. A method for determining a perception message, applied to each optical network unit (ONU) in a point-to-multipoint passive optical network (PON), comprising: Transmitting a detection pulse signal to the optical fiber of the ONU and the optical line terminal OLT; receiving a sensing signal generated by scattering of the detection pulse signal in the optical fiber; The sensing signal is parsed to determine the sensing message of the optical fiber.

2. The method for determining a perception message according to claim 1, wherein: Before transmitting the detection pulse signal to the optical fiber of the ONU and the optical line terminal OLT, the method further includes: receiving a sensing configuration message sent by the OLT, wherein the sensing configuration message is used to indicate a pulse parameter of the detection pulse signal; Configuring the detection pulse signal according to the pulse parameters in the sensing configuration message; In a case where the configuration of the detection pulse signal is completed, a confirmation message is sent to the OLT, wherein the confirmation message is used to indicate that the configuration of the detection pulse signal is completed.

3. The method for determining a perception message according to claim 2, wherein: Receiving a perception configuration message sent by the OLT, including: In the case where the perception configuration message is a perception configuration physical layer operation management and maintenance PLOAM message, or a perception configuration optical network unit management and control interface OMCI message, the perception configuration PLOAM message or the perception configuration OMCI message sent by the OLT is received to parse out the pulse parameters carried by the perception configuration PLOAM message or the perception configuration OMCI message, wherein the pulse parameters include: the transmission power of the detection pulse signal, the pulse period of the detection pulse signal, and the pulse length of the detection pulse signal.

4. The method for determining a perception message according to claim 1, wherein: Before transmitting the detection pulse signal to the optical fiber of the ONU and the optical line terminal OLT, the method further includes: Receiving a perception activation message sent by the OLT, wherein the perception activation message is used to turn on or off a perception function of the ONU; Turning on or off the perception function according to the instruction of the perception activation message; In a case where the sensing function has been turned on or off, a response message is sent to the OLT, wherein the response message is used to indicate that the sensing function has been turned on or off.

5. The method for determining a perception message according to claim 4, wherein: Receiving a perception activation message sent by the OLT, including: In the case where the perception activation message is a perception activation PLOAM message or a perception activation OMCI message, the perception activation PLOAM message or the perception activation OMCI message sent by the OLT is received to parse out the perception parameters carried by the perception activation PLOAM message or the perception activation OMCI message, wherein the perception parameters include: perception mode, perception type, perception threshold, and threshold type.

6. The method for determining a perception message according to claim 4, wherein: Turning on or off the perception function according to the instruction of the perception activation message includes: Turning on a narrowband laser and an optical modulator provided in the ONU to generate the detection pulse signal; Receiving the sensing signal through a coherent receiver provided in the ONU; The perception signal is parsed by a digital signal processing module provided in the ONU to determine the perception message of the optical fiber.

7. The method for determining a perception message according to claim 1, wherein: After parsing the perception signal to determine the perception message of the optical fiber, the method further includes: When it is determined according to the perception message that the degree of environmental change of the optical fiber is greater than a preset threshold, sending a perception alarm message to the OLT; Receive a perception activation message sent by the OLT based on the alarm message, and shut down the perception function of the ONU according to the perception activation message.

8. The method for determining a perception message according to claim 1, wherein: After parsing the perception signal to determine the perception message of the optical fiber, the method further includes: When it is determined according to the perception message that the degree of environmental change of the optical fiber is greater than a preset threshold, sending a perception alarm message to the OLT; In a case where the OLT does not allocate bandwidth for the ONU to transmit the awareness activation message, receiving an awareness channel message sent by the OLT based on the alarm message; The allocated bandwidth identifier is parsed from the perception channel message, and the perception signal is sent to the OLT according to the bandwidth corresponding to the allocated bandwidth identifier.

9. The method for determining a perception message according to claim 1, wherein: The method further comprises: receiving a channel perception message periodically sent by the OLT; The allocated bandwidth identifier is parsed from the perception channel message, and the perception signal is sent to the OLT according to the bandwidth corresponding to the allocated bandwidth identifier.

10. The method for determining a perception message according to any one of claims 7 to 9, wherein: The method further comprises: In the case where the perception alarm message is a perception alarm PLOAM message or a perception alarm OMCI message, the perception alarm PLOAM message or the perception alarm OMCI message sent by the OLT is received to parse out the perception function carried by the perception alarm PLOAM message or the perception alarm OMCI message.

11. A device for determining a perception message, applied to each optical network unit (ONU) in a point-to-multipoint passive optical network (PON), comprising: A transmitting module is configured to transmit a detection pulse signal to the optical fiber of the ONU and the optical line terminal OLT; A receiving module, configured to receive a sensing signal generated by the detection pulse signal being scattered in the optical fiber; The determination module is configured to parse the perception signal to determine the perception message of the optical fiber.

12. A computer-readable storage medium storing a computer program, wherein: The computer program is configured to execute the method according to any one of claims 1 to 10 when executed.

13. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the method according to any one of claims 1 to 10 through the computer program.

14. A computer program product comprising a computer program, wherein when the computer program is executed by a processor, the computer program implements the steps of the method according to any one of claims 1 to 10.

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