Optical communication system, optical signal processing method, and communication device

Abstract

The application discloses an optical communication system, an optical signal processing method and a communication device. The optical communication system can divide the optical power of one wavelength of optical signals in the optical signals, and divide the optical power of another wavelength of optical signals in the optical signals according to different user end devices, thereby realizing the differentiation of the user end devices based on the optical power difference of the optical signals of the specific wavelength, and further realizing the differentiation of the second port (i.e., the downstream optical interface of the optical splitting device) of the corresponding optical splitting device of the user end device based on the optical power difference of the optical signals of the specific wavelength, so as to realize the correspondence between the ODN port (e.g., the downstream optical interface of the optical splitting device) and the user end device, thereby improving the management efficiency of the optical communication system.

Description

Technical Field

[0001] This application relates to the field of optical communication, and more particularly to optical communication systems, optical signal processing methods, and communication devices. Background Technology

[0002] A point-to-multipoint (P2MP) optical transport network (OTN) consists of OTN central office (CO) equipment deployed in a central office (CO) site, customer premises (CPE) equipment (referred to as user-end equipment) on the user side, and an optical distribution network (ODN) connecting the CO and CPE. The ODN is composed of passive components, including backbone fiber, splitters, and access fiber (also called branch fiber). The ODN is the physical fiber connection channel between the CO and user-end equipment, providing a physical channel for bidirectional transmission of optical signals. Generally, one CO can connect to multiple user-end equipment via the ODN.

[0003] However, with the increasing number of branch optical paths in the optical splitter and the growing complexity of ODN networking, coupled with the passive nature of ODN itself, the operation and maintenance of ODN networks become more difficult after they are put into operation. For example, problems arise such as unvisible resources, long fault location times, and difficulties in troubleshooting. Therefore, visualizing the correspondence between ODN ports and user-end devices is of significant value and importance. Summary of the Invention

[0004] This application provides an optical communication system, an optical signal processing method, and a communication device for realizing the correspondence between ODN ports (e.g., the output port of a splitter) and user terminal equipment, thereby improving the management efficiency of the optical communication system.

[0005] Firstly, this application provides an optical network communication method applied in an optical communication system. The optical communication system includes central office equipment, optical splitting equipment, and user terminal equipment. The optical splitting equipment includes a first port and multiple second ports. The central office equipment is connected to the first port of the optical splitting equipment via a trunk optical fiber. The multiple second ports of the optical splitting equipment are respectively connected to multiple user terminal equipment via branch optical fibers, with each of the multiple second ports corresponding one-to-one with a single user terminal equipment. The optical network communication method provided in this aspect can be executed by the central office equipment in the optical communication system, or it can be executed by some functional modules or chips within the central office equipment. Taking the operation of the central office equipment as an example, the central office equipment sends a downlink input optical signal to the first port. The downlink input optical signal includes a first optical signal with a first wavelength and a second optical signal with a second wavelength. After the downlink input optical signal is split by the beam splitter, it outputs multiple downlink output optical signals through multiple second ports. Each downlink output optical signal includes a first optical signal and a second optical signal. The optical power of the first optical signal in the multiple downlink output optical signals is the same, and the optical power of the second optical signal in the multiple downlink output optical signals is different. Then, the central office equipment receives the optical power of the first optical signal and the optical power of the second optical signal from the user terminal equipment. The optical power of the first optical signal is the optical power of the first optical signal contained in the downlink output optical signal received by the user terminal equipment from the second port of the beam splitter, and the optical power of the second optical signal is the optical power of the second optical signal contained in the downlink output optical signal received by the user terminal equipment from the second port of the beam splitter. Then, the central office equipment determines the first indication information of the user terminal equipment based on the optical power of the first optical signal and the optical power of the second optical signal. The first indication information of the user terminal equipment is used to identify the user terminal equipment among multiple user terminal equipment.

[0006] In this aspect, the central office equipment can acquire the power of the received first optical signal and the power of the received second optical signal detected by each user terminal equipment, and then calculate the first indication information of each user terminal equipment. Since different user terminal equipment receive different downlink output optical signals after processing by the splitter, i.e., different user terminal equipment receive the same optical power of the first optical signal but different optical power of the second optical signal, different user terminal equipment can be distinguished based on the optical power of the first and second optical signals measured by the user terminal equipment. Since the difference in the optical power of the second optical signal of different user terminal equipment is due to the different second ports of the splitter, the optical power of the first and second optical signals can be used to determine the second port of the splitter connected to the user terminal equipment. This facilitates the corresponding association between user terminal equipment and the second ports of the splitter, thereby clarifying the network topology of the optical communication system and improving the management efficiency of the optical communication system.

[0007] In one possible implementation, the first indication information is determined by calculation based on the optical power of the first optical signal and the optical power of the second optical signal.

[0008] In one possible implementation, the first indication information is determined based on a first ratio and / or a first difference, wherein the first ratio is the ratio of the optical power of the second optical signal to the optical power of the first optical signal, and the first difference is the difference between the optical power of the second optical signal and the optical power of the first optical signal.

[0009] In one possible implementation, the method further includes: the central office equipment determining the port information of the second port of the optical splitter connected to the user terminal equipment based on the first correspondence relationship and the first indication information of the user terminal equipment, wherein the first correspondence relationship is used to indicate the correspondence between the first indication information of the user terminal equipment and the port information of the second port of the optical splitter.

[0010] In this embodiment, the central office equipment stores a first correspondence relationship. Based on this relationship and the first indication information of the user terminal equipment, it can determine the port information of the second port connected to each user terminal equipment, and then report this port information to the network management equipment. This helps save the processing overhead of the network management equipment in determining the port information of the second port. Furthermore, the network management equipment can collect the port information of the second ports corresponding to multiple user terminal equipment managed by the central office equipment at once, granularity. This facilitates the network management equipment's classification and management of user terminal equipment at the central office equipment level when collecting port information reported by multiple central office equipment, thereby improving its management efficiency.

[0011] In one possible implementation, the method further includes: the central office equipment sending the optical power of the first optical signal and the optical power of the second optical signal to the network management equipment.

[0012] It should be noted that there are many other specific implementation methods in this application, and you can refer to the specific implementation methods and their beneficial effects in each aspect, which will not be repeated here.

[0013] Secondly, this application provides an optical communication system, which includes: a central office equipment, a splitter, and user terminal equipment. The splitter includes a first port and multiple second ports. The central office equipment is connected to the first port of the splitter via a trunk optical fiber. The multiple second ports of the splitter are respectively connected to multiple user terminal devices via branch optical fibers, with each of the multiple second ports corresponding to one of the multiple user terminal devices. When the optical communication system is in operation, the central office equipment is used to send downlink input optical signals to the first port. The downlink input optical signals include a first optical signal with a first wavelength and a second optical signal with a second wavelength. The beam splitter is used to split the downlink input optical signals and output multiple downlink output optical signals through multiple second ports. Each downlink output optical signal includes a first optical signal and a second optical signal. The optical power of the first optical signal in the multiple downlink output optical signals is the same, and the optical power of the second optical signal in the multiple downlink output optical signals is different. Each user terminal equipment is used to receive the downlink output optical signal of the corresponding second port and detect the optical power of the first optical signal and the optical power of the second optical signal in the downlink output optical signal. The optical power of the first optical signal and the optical power of the second optical signal are used to determine the second port of the beam splitter connected to the user terminal equipment.

[0014] In this aspect, since different user terminal devices receive different downlink output optical signals after processing by the optical splitter, that is, different user terminal devices receive the same optical power for the first optical signal but different optical power for the second optical signal, different user terminal devices can be distinguished based on the optical power of the first and second optical signals measured by the user terminal devices. Since the difference in the optical power of the second optical signal from different user terminal devices is due to the different second ports of the optical splitter, the optical power of the first and second optical signals can be used to determine the second port of the optical splitter connected to the user terminal device. This facilitates the corresponding association between user terminal devices and the second ports of the optical splitter, thereby clarifying the network topology of the optical communication system and improving the management efficiency of the optical communication system.

[0015] In one possible implementation, the optical power of the first optical signal and the optical power of the second optical signal are used to determine first indication information of the user terminal equipment. This first indication information is used to identify the user terminal equipment among multiple user terminal equipments. That is, different user terminal equipments receive different optical power levels of the second optical signal, resulting in different first indication information determined by each user terminal equipment. Therefore, different user terminal equipments can be distinguished by these different first indication information. Thus, the first indication information can also be understood as a type of identification information for the user terminal equipment.

[0016] Optionally, the first indication information is determined by calculation results obtained based on the optical power of the first optical signal and the optical power of the second optical signal.

[0017] Optionally, the first indication information is determined based on a first ratio and / or a first difference, where the first ratio is the ratio of the optical power of the second optical signal to the optical power of the first optical signal, and the first difference is the difference between the optical power of the second optical signal and the optical power of the first optical signal.

[0018] In one possible implementation, the user terminal equipment is further configured to determine first indication information of the user terminal equipment based on the optical power of the first optical signal and the optical power of the second optical signal; the user terminal equipment is further configured to send the first indication information to the central office equipment.

[0019] In this embodiment, the user terminal equipment possesses certain computing capabilities, enabling it to calculate the first indication information and report it to the central office equipment. Since the downlink input optical signal in this optical communication system is broadcast, multiple user terminal equipment may simultaneously receive the downlink output optical signal from the second port of the splitter. Therefore, multiple user terminal equipment can determine their respective first indication information in parallel. However, each user terminal equipment transmits its own first indication information in its respective uplink time slot, allowing the central office equipment to obtain the first indication information from multiple user terminal equipment within a short time. This not only reduces the time overhead for the central office equipment to obtain the first indication information from multiple user terminal equipment but also saves the computing overhead required for the central office equipment to calculate the first indication information.

[0020] In one possible implementation, the user terminal equipment is further configured to transmit the optical power of the first optical signal and the optical power of the second optical signal to the central office equipment. The central office equipment is further configured to determine first indication information of the user terminal equipment based on the optical power of the first optical signal and the optical power of the second optical signal.

[0021] In this embodiment, the central office equipment can obtain the power of the received first optical signal and the power of the received second optical signal detected by each user terminal equipment, and then calculate the first indication information of each user terminal equipment, which helps to save the computational overhead of the user terminal equipment in calculating the first indication information. In addition, the user terminal equipment only needs to report the detected power information, so it is not required that the user terminal equipment has computing power, reducing the complexity of the user terminal equipment. This allows the solution to be applied to user terminal equipment without computing power, improving the flexibility of the solution.

[0022] In one possible implementation, the central office equipment is further configured to send the optical power of the first optical signal and the optical power of the second optical signal to the network management equipment; the network management equipment is configured to determine the first indication information of the user terminal equipment based on the optical power of the first optical signal and the optical power of the second optical signal.

[0023] In this embodiment, the network management device has strong processing (or computing) capabilities, enabling it to determine the first indication information of each user terminal device based on the power information received from each user terminal device within a short time. This helps save the computational overhead of user terminal devices in calculating the first indication information, and also helps save the computational overhead of central office devices in calculating the first indication information.

[0024] In one possible implementation, the central office equipment stores a first correspondence relationship, which is used to indicate the correspondence between the first indication information of the user terminal equipment and the port information of the second port of the optical splitter; the central office equipment is also used to determine the port information of the second port of the optical splitter connected to the user terminal equipment based on the first correspondence relationship and the first indication information of the user terminal equipment; the central office equipment is also used to send the port information of the second port of the optical splitter to the network management equipment.

[0025] In this embodiment, the central office equipment stores a first correspondence relationship. Based on this relationship and the first indication information of the user terminal equipment, it can determine the port information of the second port connected to each user terminal equipment, and then report this port information to the network management equipment. This helps save the processing overhead of the network management equipment in determining the port information of the second port. Furthermore, the network management equipment can collect the port information of the second ports corresponding to multiple user terminal equipment managed by the central office equipment at once, granularity. This facilitates the network management equipment's classification and management of user terminal equipment at the central office equipment level when collecting port information reported by multiple central office equipment, thereby improving its management efficiency.

[0026] In one possible implementation, the network management device stores a first correspondence relationship, which is used to indicate the correspondence between the first indication information of the user terminal device and the port information of the second port of the optical splitter; the network management device is also used to determine the port information of the second port of the optical splitter connected to the user terminal device based on the first correspondence relationship and the first indication information of the user terminal device.

[0027] In this embodiment, the network management device stores a first correspondence relationship, and can determine the port information of the second port connected to the user terminal device based on the first correspondence relationship and the first indication information of the user terminal device, which helps to save the processing overhead of the central office device and the user terminal device.

[0028] Thirdly, this application provides an optical network communication method applied in an optical communication system. The optical communication system includes a central office equipment, a splitter, and user terminal equipment. The splitter includes a first port and multiple second ports. The central office equipment is connected to the first port of the splitter via a trunk optical fiber. The multiple second ports of the splitter are respectively connected to multiple user terminal equipment via branch optical fibers, with each of the multiple second ports corresponding one-to-one with a single user terminal equipment. The optical network communication method provided in this aspect can be executed by the user terminal equipment in the optical communication system, or by a portion of a functional module or chip within the user terminal equipment. Taking execution by the user terminal equipment as an example, the user terminal equipment receives a downlink output optical signal from the second port corresponding to the user terminal equipment. The downlink output optical signal includes a first optical signal with a first wavelength and a second optical signal with a second wavelength. The user terminal equipment detects the optical power of the first optical signal and the optical power of the second optical signal in the downlink output optical signal. Based on the optical power of the first optical signal and the optical power of the second optical signal, the user terminal equipment determines first indication information of the user terminal equipment. The first indication information of the user terminal equipment is used to identify the user terminal equipment among the multiple user terminal equipment.

[0029] In one possible implementation, the method further includes: the user terminal device sending the optical power of the first optical signal and the optical power of the second optical signal received by the user terminal device to the central office device, wherein the optical power of the first optical signal and the optical power of the second optical signal are used to determine the second port of the optical splitter connected to the user terminal device.

[0030] In one possible implementation, the method further includes: the user terminal device sending first indication information to the central office device, the first indication information of the user terminal device being used to identify the user terminal device among multiple user terminal devices.

[0031] In one possible implementation, the first indication information is determined based on a first ratio and / or a first difference, wherein the first ratio is the ratio of the optical power of the second optical signal to the optical power of the first optical signal, and the first difference is the difference between the optical power of the second optical signal and the optical power of the first optical signal.

[0032] It should be noted that there are many other specific implementation methods in this application, and you can refer to the specific implementation methods and their beneficial effects in each aspect, which will not be repeated here.

[0033] Fourthly, this application provides an optical network communication method applied in an optical communication system. The optical communication system includes a central office device, a splitter, user terminal devices, and a network management device. The splitter includes a first port and multiple second ports. The central office device is connected to the first port of the splitter via a trunk optical fiber. The multiple second ports of the splitter are respectively connected to multiple user terminal devices via branch optical fibers, with each second port corresponding one-to-one with a user terminal device. The optical network communication method provided in this aspect can be executed by the network management device in the optical communication system, or by some functional modules or chips within the network management device. Taking execution by the network management device as an example, the network management device obtains first indication information of the user terminal devices, which is used to identify the user terminal devices among multiple user terminal devices. Then, based on a first correspondence and the first indication information of the user terminal devices, the network management device determines the port information of the second port of the splitter connected to the user terminal devices. The first correspondence is used to indicate the correspondence between the first indication information of the user terminal devices and the port information of the second port of the splitter.

[0034] In one possible implementation, the network management device acquires first indication information from the user terminal device, including: the network management device receiving from the central office device the optical power of a first optical signal and the optical power of a second optical signal from the user terminal device, wherein the first optical signal is an optical signal with a first wavelength in the downlink output optical signal received by the user terminal device from the corresponding second port, and the second optical signal is an optical signal with a second wavelength in the downlink output optical signal received by the user terminal device from the corresponding second port; the network management device determines the first indication information of the user terminal device based on the optical power of the first optical signal and the optical power of the second optical signal;

[0035] In another possible implementation, the network management device obtains the first indication information of the user terminal device, including: the network management device receiving the first indication information of the user terminal device from the central office device.

[0036] It should be noted that there are many other specific implementation methods in this application, and you can refer to the specific implementation methods and their beneficial effects in each aspect, which will not be repeated here.

[0037] Fifthly, this application provides an optical network communication method applied in an optical communication system. The optical communication system includes central office equipment, a splitter, and user terminal equipment. The splitter includes a first port and multiple second ports. The central office equipment is connected to the first port of the splitter via a trunk optical fiber. The multiple second ports of the splitter are respectively connected to multiple user terminal equipment via branch optical fibers, with each of the multiple second ports corresponding one-to-one with a single user terminal equipment. The optical network communication method provided in this aspect can be executed by the central office equipment in the optical communication system, or by some functional modules or chips within the central office equipment. Taking the execution of the central office equipment as an example, the central office equipment receives the uplink output optical signal from the optical splitter and detects the optical power of the third optical signal and the optical power of the fourth optical signal in the uplink output optical signal. The uplink output optical signal is determined by the optical splitter based on the uplink input optical signal from the user terminal equipment. The third optical signal is an optical signal with a third wavelength, and the fourth optical signal is an optical signal with a fourth wavelength. Then, the central office equipment determines the second indication information of the user terminal equipment based on the optical power of the third optical signal and the optical power of the fourth optical signal. Alternatively, the central office equipment sends the optical power of the third optical signal and the optical power of the fourth optical signal to the network management equipment. The optical power of the third optical signal and the optical power of the fourth optical signal are used to determine the second indication information of the user terminal equipment. The second indication information of the user terminal equipment is used to identify the user terminal equipment among multiple user terminal equipment.

[0038] In this respect, the optical power of the third optical signal contained in the uplink output optical signals received by the central office equipment through different second ports is the same, while the optical power of the fourth optical signal contained in the uplink output optical signals received by the central office equipment through different second ports is different. Since different user terminal equipment connects to different second ports of the splitter, the optical power of the third and fourth optical signals can be used to determine the second port of the splitter connected to the user terminal equipment. This facilitates the correspondence between user terminal equipment and the second ports of the splitter, thereby clarifying the network topology of the optical communication system and improving the management efficiency of the optical communication system.

[0039] In one possible implementation, the optical power of the third optical signal contained in the uplink output optical signal corresponding to different user terminal devices is the same, while the optical power of the fourth optical signal contained in the uplink output optical signal corresponding to different user terminal devices is different.

[0040] In one possible implementation, the second indication information is determined based on a second ratio and / or a second difference, wherein the second ratio is the ratio of the optical power of the fourth optical signal to the optical power of the third optical signal, and the second difference is the difference between the optical power of the fourth optical signal and the optical power of the third optical signal.

[0041] In one possible implementation, the central office equipment stores a second correspondence relationship, which is used to indicate the correspondence between the second indication information of the user terminal equipment and the port information of the second port of the optical splitter; the method further includes: the central office equipment determining the port information of the second port of the optical splitter connected to the user terminal equipment based on the second correspondence relationship and the second indication information; and the central office equipment sending the port information of the second port of the optical splitter to the network management equipment.

[0042] In one possible implementation, the method further includes: the central office equipment sending a second instruction message to the network management equipment.

[0043] It should be noted that there are many other specific implementation methods in this application, and you can refer to the specific implementation methods and their beneficial effects in each aspect, which will not be repeated here.

[0044] Sixthly, this application provides an optical communication system, which includes central office equipment, optical splitting equipment, and user terminal equipment. The optical splitting equipment includes a first port and multiple second ports. The central office equipment is connected to the first port of the optical splitting equipment through a trunk optical fiber. The multiple second ports of the optical splitting equipment are respectively connected to multiple user terminal equipment through branch optical fibers, and the multiple second ports correspond one-to-one with the multiple user terminal equipment. When the optical communication system is working, each user terminal device (UDP) sends an uplink input optical signal to the second port connected to the UDP. The uplink input optical signal includes a third optical signal with a third wavelength and a fourth optical signal with a fourth wavelength. The optical power of the third optical signal in the uplink input optical signals sent by different UDPs is the same, and the optical power of the fourth optical signal in the uplink input optical signals sent by different UDPs is also the same. The optical splitter processes the uplink input optical signal received through the second port and outputs the corresponding uplink output optical signal of the UDP through the first port. The central office device receives the uplink output optical signal from the UDP from the optical splitter and detects the optical power of the third optical signal and the optical power of the fourth optical signal in the uplink output optical signal. The optical power of the third optical signal and the optical power of the fourth optical signal are used to determine the second port of the optical splitter connected to the UDP.

[0045] In this respect, since the uplink input optical signals sent by different user-end devices pass through different second ports of the optical splitter, the attenuation of the third optical signal is the same at different second ports, but the attenuation of the fourth optical signal is different. Therefore, the optical power of the third optical signal contained in the uplink output optical signals received by the central office equipment after passing through different second ports is the same, while the optical power of the fourth optical signal contained in the uplink output optical signals received by the central office equipment after passing through different second ports is different. Since different user-end devices are connected to different second ports of the optical splitter, the optical power of the third and fourth optical signals can be used to determine the second port of the optical splitter connected to the user-end device. This facilitates the correspondence between user-end devices and the second ports of the optical splitter, thereby clarifying the network topology of the optical communication system and improving the management efficiency of the optical communication system.

[0046] In one possible implementation, the optical power of the third optical signal and the optical power of the fourth optical signal are used to determine the second indication information of the user terminal device, which is used to identify the user terminal device among multiple user terminal devices.

[0047] In one possible implementation, the second indication information is determined by calculation based on the optical power of the third optical signal and the optical power of the fourth optical signal.

[0048] In one possible implementation, the second indication information is determined based on a second ratio and / or a second difference, wherein the second ratio is the ratio of the optical power of the fourth optical signal to the optical power of the third optical signal, and the second difference is the difference between the optical power of the fourth optical signal and the optical power of the third optical signal.

[0049] In one possible implementation, the optical communication system further includes a network management device; the central office device is also used to determine the second indication information of the user terminal device based on the optical power of the third optical signal and the optical power of the fourth optical signal, and to send the second indication information to the network management device.

[0050] In one possible implementation, the optical communication system further includes a network management device; the central office device is also used to send the optical power of the third optical signal and the optical power of the fourth optical signal to the network management device; the network management device is also used to determine the second indication information of the user terminal device based on the optical power of the third optical signal and the optical power of the fourth optical signal.

[0051] In one possible implementation, the network management device stores a second correspondence, which is used to indicate the correspondence between the second indication information of the user terminal device and the port information of the second port of the optical splitter; the network management device is also used to determine the port information of the second port of the optical splitter connected to the user terminal device based on the second correspondence and the second indication information of the user terminal device.

[0052] In this embodiment, the central office equipment stores a second correspondence relationship. Based on this relationship and the second indication information of the user terminal equipment, it can determine the port information of the second port connected to each user terminal equipment, and then report this port information to the network management equipment. This saves the processing overhead of the network management equipment in determining the port information of the second port. Furthermore, the network management equipment can collect the port information of the second ports corresponding to multiple user terminal equipment managed by the central office equipment at once, granularity. This facilitates the network management equipment's classification and management of user terminal equipment at the central office equipment level when collecting port information reported by multiple central office equipment, thereby improving the management efficiency of the network management equipment.

[0053] In one possible implementation, the central office equipment stores a second correspondence relationship, which is used to indicate the correspondence between the second indication information of the user terminal equipment and the port information of the second port of the optical splitter; the central office equipment is also used to determine the second indication information of the user terminal equipment based on the optical power of the third optical signal and the optical power of the fourth optical signal; the central office equipment is also used to determine the port information of the second port of the optical splitter connected to the user terminal equipment based on the second correspondence relationship and the second indication information; the central office equipment is also used to send the port information of the second port of the optical splitter to the network management equipment.

[0054] It should be noted that there are many other specific implementation methods in this application, and you can refer to the specific implementation methods and their beneficial effects in each aspect, which will not be repeated here.

[0055] Seventhly, this application provides an optical network communication method applied in an optical communication system. The optical communication system includes a central office device, a splitter, user terminal devices, and a network management device. The splitter includes a first port and multiple second ports. The central office device is connected to the first port of the splitter via a trunk optical fiber. The multiple second ports of the splitter are respectively connected to multiple user terminal devices via branch optical fibers, with each of the multiple second ports corresponding one-to-one with a single user terminal device. The optical network communication method provided in this aspect can be executed by the network management device in the optical communication system, or by some functional modules or chips within the network management device. Taking execution by the network management device as an example, the network management device obtains second indication information of the user terminal devices. The second indication information of the user terminal devices is used to identify the user terminal devices among the multiple user terminal devices. Based on the second correspondence and the second indication information of the user terminal devices, the network management device determines the port information of the second port of the splitter connected to the user terminal devices. The second correspondence is used to indicate the correspondence between the second indication information of the user terminal devices and the port information of the second port of the splitter.

[0056] In one possible implementation, the network management device acquires the second indication information of the user terminal device, including: the network management device receiving the optical power of a third optical signal and the optical power of a fourth optical signal of the user terminal device sent by the central office device, wherein the third optical signal is an optical signal with a third wavelength included in the uplink output optical signal received by the central office device, and the fourth optical signal is an optical signal with a fourth wavelength included in the uplink output optical signal received by the central office device; the network management device determines the second indication information of the user terminal device based on the optical power of the third optical signal and the optical power of the fourth optical signal; or, the network management device receives the second indication information of the user terminal device from the central office device.

[0057] In one possible implementation, the second indication information is determined based on a second ratio and / or a second difference, wherein the second ratio is the ratio of the optical power of the fourth optical signal to the optical power of the third optical signal, and the second difference is the difference between the optical power of the fourth optical signal and the optical power of the third optical signal.

[0058] It should be noted that there are many other specific implementation methods in this application, and you can refer to the specific implementation methods and their beneficial effects in each aspect, which will not be repeated here.

[0059] Eighthly, embodiments of this application provide a beam splitting device, which includes a first port and a plurality of second ports, wherein the first port is used to connect to central office equipment and the second ports are used to connect to user terminal equipment;

[0060] In this configuration, the first port is used to receive downlink input optical signals, and the second port is used to output downlink output optical signals. The insertion loss of the first optical signal in the downlink input optical signals is the same for all the multiple second ports, and the insertion loss of the second optical signal in the downlink input optical signals is different for each of the multiple second ports. The first optical signal is an optical signal of a first wavelength, and the second optical signal is an optical signal of a second wavelength. Alternatively, the second port is used to receive uplink input optical signals, and the first port is used to output uplink output optical signals. The insertion loss of the third optical signal in the uplink input optical signals is the same for all the multiple second ports, and the insertion loss of the fourth optical signal in the uplink input optical signals is different for each of the multiple second ports. The third optical signal is an optical signal of a third wavelength, and the fourth optical signal is an optical signal of a fourth wavelength.

[0061] Ninthly, embodiments of this application provide a communication device, which may be a central office device as described in the foregoing embodiments, or a chip within the central office device. The communication device may include a processing module and a transceiver module. When the communication device is a central office device, the processing module may be a processor, and the transceiver module may be a transceiver. The central office device may also include a storage module, which may be a memory. The storage module stores instructions, and the processing module executes the instructions stored in the storage module to cause the central office device to perform the methods in any of the foregoing embodiments. When the communication device is a chip within the central office device, the processing module may be a processor, and the transceiver module may be an input / output interface, pin, or circuit, etc. The processing module executes the instructions stored in the storage module to cause the central office device to perform the methods in any of the foregoing embodiments. The storage module may be a storage module within the chip (e.g., a register, cache, etc.), or a storage module located outside the chip within the central office device (e.g., a read-only memory, random access memory, etc.).

[0062] Tenthly, embodiments of this application provide a communication device, which may be a user terminal device as described in the foregoing embodiments, or a chip within the user terminal device. The communication device may include a processing module and a transceiver module. When the communication device is a user terminal device, the processing module may be a processor, and the transceiver module may be a transceiver. Optionally, the user terminal device may further include a storage module, which may be a memory; the storage module stores instructions, and the processing module executes the instructions stored in the storage module to cause the user terminal device to perform the methods in any of the foregoing embodiments. When the communication device is a chip within the user terminal device, the processing module may be a processor, and the transceiver module may be an input / output interface, pin, or circuit, etc.; the processing module executes the instructions stored in the storage module to cause the user terminal device to perform the methods in any of the foregoing embodiments. The storage module may be an internal storage module (e.g., a register, cache, etc.) within the chip, or an external storage module (e.g., a read-only memory, random access memory, etc.) within the user terminal device.

[0063] Eleventhly, embodiments of this application provide a communication device, which may be a network management device as described in the foregoing embodiments, or a chip within the network management device. The communication device may include a processing module and a transceiver module. When the communication device is a network management device, the processing module may be a processor, and the transceiver module may be a transceiver. Optionally, the network management device may further include a storage module, which may be a memory; the storage module stores instructions, and the processing module executes the instructions stored in the storage module to cause the network management device to perform the methods in any of the foregoing embodiments. When the communication device is a chip within the network management device, the processing module may be a processor, and the transceiver module may be an input / output interface, pin, or circuit, etc.; the processing module executes the instructions stored in the storage module to cause the network management device to perform the methods in any of the foregoing embodiments. The storage module may be a storage module within the chip (e.g., a register, cache, etc.), or a storage module located outside the chip within the network management device (e.g., a read-only memory, random access memory, etc.).

[0064] In a twelfth aspect, this application provides a communication device, which may be an integrated circuit chip. The integrated circuit chip includes a processor. The processor is coupled to a memory for storing programs or instructions that, when executed by the processor, cause the processing device to perform the methods described in any of the various embodiments of the foregoing aspects, as well as the foregoing aspects.

[0065] In a thirteenth aspect, embodiments of this application provide a computer program product containing instructions that, when executed on a computer, cause the computer to perform the methods described in any of the various embodiments of the foregoing aspects.

[0066] In a fourteenth aspect, embodiments of this application provide a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the methods described in any of the various embodiments of the foregoing aspects. Attached Figure Description

[0067] Figure 1 An example diagram of the optical communication system provided in this application;

[0068] Figure 2A A schematic diagram of the optical communication system provided in this application during downlink transmission;

[0069] Figure 2B A schematic diagram of the optical communication system provided in this application during uplink transmission;

[0070] Figure 3A flowchart of an embodiment of the optical signal processing method provided in this application;

[0071] Figure 4 A flowchart of another embodiment of the optical signal processing method provided in this application;

[0072] Figure 5 A schematic diagram of an embodiment of the communication device provided in this application;

[0073] Figure 6 A schematic diagram of another embodiment of the communication device provided in this application;

[0074] Figure 7 A schematic diagram of another embodiment of the communication device provided in this application;

[0075] Figure 8 A schematic diagram of another embodiment of the communication device provided in this application;

[0076] Figure 9 A schematic diagram of another embodiment of the communication device provided in this application;

[0077] Figure 10 This is a schematic diagram of another embodiment of the communication device provided in this application. Detailed Implementation

[0078] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0079] In the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of different embodiments are consistent and can be referenced by each other. The technical features of different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0080] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such terms are interchangeable where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0081] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0082] The optical communication system, optical signal processing method, and communication device provided in this application can be applied to point-to-multipoint (P2MP) optical fiber networks. It should be noted that the optical fiber in the embodiments of this application can be a single optical fiber, loose-tube optical fiber, optical cable, or optoelectronic composite cable, etc., and the embodiments of this application do not limit the specific type of optical fiber.

[0083] Figure 1 An example diagram of the optical communication system provided in this application. Figure 1As shown, the optical communication system includes a central office device 01, a splitter device 02, and a user terminal device 03. The central office device 01 can be an optical transport network (OTN) central office device (which can be a chassis-based device) deployed in a central office (CO) site. The two core functions of a traditional central office device are: downstream, providing delivery and access capabilities to user terminal devices at the end of the P2MP network, and aggregating services from user terminal devices; upstream, establishing a link between the P2MP network and the upper-layer core network. The user terminal device 03 can be a customer premises(s) device (CPE), the end unit of the P2MP network, whose main function is to provide an access interface between end users (e.g., users in parks, enterprises, or buildings) and the P2MP network. The splitter device 02 is a passive device and can be a single splitter, a combination of multiple splitters, or a combination of a splitter and a wavelength division multiplexer; this embodiment is not limited to these limitations. The optical splitter 02, along with the trunk fiber, branch fibers, and optical distribution frame (ODF), constitutes an ODN. The ODN connects the central office equipment 01 and multiple user-end equipment 03; that is, the ODN is the physical fiber optic connection channel between the central office equipment 01 and the user-end equipment 03. Optionally, the optical splitter 02 includes a first port (also called an uplink optical interface) and multiple second ports (also called downlink optical interfaces). The central office equipment 01 is connected to the first port of the optical splitter 02 via the trunk fiber, and the multiple second ports of the optical splitter 02 are respectively connected to multiple user-end equipment 03 via branch fibers. Optionally, the multiple second ports correspond one-to-one with the multiple user-end equipment 03. Optical signals entering the optical splitter 02 from the first port (e.g., downlink optical signals) are distributed to the various second ports for transmission, while optical signals entering the optical splitter 02 from the second ports (e.g., uplink optical signals) are distributed to the unique first port for transmission. When a downlink optical signal is transmitted from the first port to the second port, the optical signal strength or power will decrease; similarly, when an uplink optical signal is transmitted from the second port to the first port, the optical signal strength or power will also decrease. In other words, the second port of the optical splitter 02 has insertion loss (IL) (hereinafter referred to as insertion loss), meaning the link between the first and second ports of the optical splitter 02 has a certain insertion loss. Generally, the insertion loss of the link from the first port to the second port is the same as the insertion loss of the link from the second port to the first port. This can be understood as the insertion loss in the downlink direction being the same as the insertion loss in the uplink direction, meaning the optical power attenuation in the uplink direction is the same as the optical power attenuation in the downlink direction.

[0084] Optionally, the optical communication system also includes a network management device 04. The network management device 04 is used to manage the central office equipment 01 and the user terminal equipment 03. The network management device 04 can be independent of the central office equipment 01, or the functions of the network management device 04 can be implemented by the central office equipment 01; this embodiment is not limited. The following description mainly uses the example of the network management device 04 being independent of the central office equipment 01. Those skilled in the art should understand that the functions of the network management device 04 can all be replaced by the central office equipment 01; in this case, the signaling interaction between the central office equipment 01 and the network management device 04 does not need to be performed.

[0085] In the operation of this optical communication system, in the downlink direction, the central office equipment 01 broadcasts the downlink optical signal, which is then distributed to each user terminal equipment 03 via the optical splitter 02. In the uplink direction, a time division multiple access (TDMA) method is used, with each user terminal equipment 03 transmitting the uplink optical signal in its respective uplink time slot allocated by the central office equipment 01. Unlike the traditional approach where the optical splitter evenly distributes the optical power of the entire optical signal, the optical splitter 02 provided in this embodiment can evenly distribute the optical power of one wavelength of light in the optical signal, while simultaneously dividing the optical power of another wavelength of light in the optical signal according to different second ports. Since different second ports are connected to different user terminal equipment 03, the user terminal equipment 03 can be distinguished based on the optical power difference of the optical signal at a specific wavelength. This facilitates the differentiation of the second port (i.e., the downlink optical interface of the optical splitter 02) corresponding to the user terminal equipment 03 based on the optical power difference of the optical signal at a specific wavelength.

[0086] The following are combined with Figure 2A and Figure 2B The downlink and uplink transmission schemes are introduced below:

[0087] Figure 2A This is a schematic diagram of the optical communication system provided in the embodiments of this application during downlink transmission.

[0088] like Figure 2A As shown, the central office equipment 01 is used to send a downlink input optical signal to the first port of the optical splitter 02. The downlink input optical signal includes a first optical signal with a first wavelength and a second optical signal with a second wavelength of 1270 nm. The first wavelength and the second wavelength are different. For example, the first wavelength is 1490 nm and the second wavelength is 1577 nm, that is, the 1490 nm optical signal and the 1577 nm optical signal are transmitted simultaneously in the optical fiber link.

[0089] Optical splitter 02 is used to split the downlink input optical signal received from the first port, and output multiple downlink output optical signals through multiple second ports. Each downlink output optical signal includes a first optical signal and a second optical signal. Since the insertion loss of the first optical signal in the downlink input optical signal is the same for all the multiple second ports, and the insertion loss of the second optical signal in the downlink input optical signal is different for each of the multiple second ports, the first optical signal contained in each of the multiple downlink output optical signals has the same optical power, while the second optical signal contained in each of the multiple downlink output optical signals has different optical powers. It can be understood that optical splitter 02 can perform equal splitting of the first optical signal in the downlink input optical signal to ensure that the first optical signal contained in each downlink output optical signal has the same optical power; simultaneously, optical splitter 02 can perform non-equal splitting of the second optical signal in the downlink input optical signal to ensure that the second optical signal contained in each downlink output optical signal has different optical powers.

[0090] For example, taking the optical splitting device 02 as a 1:N optical splitting unit (N is greater than 1), if the optical power of the first optical signal in the downlink input optical signal sent by the central office equipment 01 is P0, then the optical splitting device 02 will divide the first optical signal in the downlink input optical signal into N parts. The optical power of the first optical signal received by each user terminal equipment 03 is P1 = (1 / N)(P0-L), where L is the link insertion loss, and the value of L is greater than or equal to 0 and less than P0. Furthermore, if the optical power of the second optical signal in the downlink input optical signal sent by the central office equipment 01 is P0, and the proportions of the second optical signals output by the N second ports are a1, a2, a3, ..., aN (where a1+a2+a3+...+aN=1, and any two values ​​from a1 to aN are different), then the optical splitter 02 divides the second optical signal into N parts according to the aforementioned proportions. The optical powers of the second optical signals received by the N user terminal equipment 03 are P1={a1(P0-L), a2(P0-L), a3(P0-L), ..., aN(P0-L)}, where L is the link insertion loss, and the value of L is greater than or equal to 0 and less than P0.

[0091] It should be understood that the splitting ratios of the N second ports for the second optical signal can follow an arithmetic sequence, other rules, or even be set without a specific rule, as long as the optical power of the second optical signal output from different ports is different. The splitting ratio of a particular second port for the second optical signal refers to the ratio between the optical power of the second optical signal output from the second port of the splitter and the optical power of the second optical signal input from the first port of the splitter. Furthermore, the difference in optical power between any two second ports should be greater than the detection capability of the photoelectric detector (PD) of the user-end device 03. In one example, if N = 4, the splitting ratios of the four second ports for the second optical signal can be 10%, 20%, 30%, and 40%, respectively. In another example, if N = 3, the splitting ratios of the three second ports for the second optical signal can be 10%, 30%, and 60%, respectively. In another example, if N=8, the splitting ratios of the second optical signal by the eight second ports can be 5%, 7%, 10%, 12%, 14%, 15%, 17%, and 20%, respectively. Other examples are possible in practical applications, but will not be listed here.

[0092] In addition, each user terminal device 03 is used to receive the downlink output optical signal from the corresponding second port and detect the optical power of the first optical signal and the optical power of the second optical signal in the downlink output optical signal. It should be noted that the user terminal device 03 detects the optical power of the first optical signal and the optical power of the second optical signal in the downlink output optical signal at the same time, which helps to avoid interference introduced by the change of optical power of the optical signal over time and improves the measurement accuracy of the optical power of the first optical signal and the optical power of the second optical signal.

[0093] In addition, the optical power of the first optical signal and the optical power of the second optical signal are used to determine the second port of the optical splitter connected to the user terminal equipment 03.

[0094] In the aforementioned optical communication system, since different user terminal devices receive different downlink output optical signals after processing by the optical splitter—that is, different user terminal devices receive the same first optical signal but different second optical signals—it is possible to distinguish different user terminal devices based on the measured optical power of the first and second optical signals. Since the difference in the optical power of the second optical signal from different user terminal devices is due to the different second ports of the optical splitter, the optical power of the first and second optical signals can be used to determine the second port of the optical splitter connected to the user terminal device. This facilitates the correspondence between user terminal devices and the second ports of the optical splitter, thereby clarifying the network topology of the optical communication system and improving its management efficiency.

[0095] Optionally, the optical power of the first optical signal and the optical power of the second optical signal are used to determine the second port of the optical splitter connected to the user terminal equipment, including: the optical power of the first optical signal and the optical power of the second optical signal are used to determine first indication information, and the first indication information is used to determine the second port of the optical splitter connected to the user terminal equipment. The first indication information is described below:

[0096] In one possible implementation, the optical power of the first optical signal and the optical power of the second optical signal are used to determine the first indication information of the user terminal device 03. This first indication information is used to identify the user terminal device among multiple user terminal devices. That is, different user terminal devices receive different optical power signals from the second optical signal, resulting in different first indication information determined by each user terminal device. Therefore, different user terminal devices can be distinguished by these different first indication information. Thus, the first indication information can also be understood as a type of identification information for the user terminal device.

[0097] Optionally, the first indication information may be determined by calculation based on the optical power of the first optical signal and the optical power of the second optical signal, or it may be determined by mapping the optical power of the first optical signal and the optical power of the second optical signal, or it may be directly used as the combination of the optical power of the first optical signal and the optical power of the second optical signal.

[0098] Optionally, the first indication information is determined based on a first ratio and / or a first difference, wherein the first ratio is the ratio of the optical power of the second optical signal to the optical power of the first optical signal, and the first difference is the difference between the optical power of the second optical signal and the optical power of the first optical signal.

[0099] In one example, the first indication information is a first ratio. For instance, if the optical power of the first optical signal is P1 and the optical power of the second optical signal is P2, then the first ratio R = P2 / P1, and the first indication information is R = P2 / P1. In another example, the first indication information is the logarithm determined based on the first ratio. For instance, if the optical power of the first optical signal is P1 and the optical power of the second optical signal is P2, then the first ratio R = P2 / P1, and the first indication information is the logarithm of the first ratio to base 10, i.e., log... 10 R = log 10The first indication information is either (P2 / P1), or it can be the logarithm of the first ratio to the base 2, i.e., log2R = log2(P2 / P1), or the first indication information is the natural logarithm of the first ratio, i.e., lnR = ln(P2 / P1). In another example, the first indication information is the first difference. For example, if the optical power of the first optical signal is P1 and the optical power of the second optical signal is P2, then the first difference D = (P2 - P1), and the first indication information is D = (P2 - P1).

[0100] In practical applications, the first indication information can also be determined based on other calculation or mapping methods, and examples will not be listed in this embodiment. For ease of understanding, the example of the first indication information being determined based on a first ratio will be used for explanation:

[0101] For example, if N=4, and the splitting ratios of the second optical signal by the four second ports are 10%, 20%, 30%, and 40%, then the four second ports of the splitter 02 output the first optical signal with the same optical power. That is, the optical power of the first optical signal received by each user terminal device 03 is P1=1 / 4(P0-L). Furthermore, the second optical signal output by the four second ports of the splitter 02 is divided according to the aforementioned ratio. For example, the optical power of the second optical signal received by user terminal device #1 is P21=10%(P0-L), the optical power of the second optical signal received by user terminal device #2 is P22=20%(P0-L), the optical power of the second optical signal received by user terminal device #3 is P23=30%(P0-L), and the optical power of the second optical signal received by user terminal device #4 is P24=40%(P0-L). In this example, the first ratio R1 of user terminal device #1 is (10%(P0-L)) / (1 / 4(P0-L)) = 0.4, the first ratio R2 of user terminal device #2 is (20%(P0-L)) / (1 / 4(P0-L)) = 0.8, the first ratio R3 of user terminal device #3 is (30%(P0-L)) / (1 / 4(P0-L)) = 1.2, and the first ratio R4 of user terminal device #4 is (40%(P0-L)) / (1 / 4(P0-L)) = 1.6. In one example, if the first indication information is the first ratio, then the first indication information of user terminal device #1 is 0.4, the first indication information of user terminal device #2 is 0.8, the first indication information of user terminal device #3 is 1.2, and the first indication information of user terminal device #4 is 1.6. In another example, the first indication information is a logarithm determined based on a first ratio. Taking the first indication information as the logarithm of the first ratio to base 10 as an example, the first indication information of user terminal device #1 is log. 10 0.4 = -0.398, the first indication information of user terminal device #2 is log. 100.8 = -0.097, the first indication information of user terminal device #3 is log. 10 1.2 = 0.079, the first indication information of user terminal device #4 is log. 10 1.6 = 0.204.

[0102] It is evident that the values ​​of the first indication information differ among different user terminal devices, which helps to distinguish different user terminal devices through different first indication information.

[0103] It should be noted that the communication device that determines the first indication information can be implemented in various ways. For example, the first indication information can be determined by the user terminal device 03 in the communication system, by the central office device 01, or by the network management device 04. Examples are given below:

[0104] In one possible implementation, the user terminal device 03 determines the first indication information and then reports the first indication information to the central office device 01. For example, the user terminal device 03 determines the first indication information based on the optical power of the first optical signal and the optical power of the second optical signal, and then sends the first indication information to the central office device 01. The central office device 01 can receive first indication information from different user terminal devices 03.

[0105] Optionally, the central office device 01 may report the received first indication information to the network management device 04, so that the network management device 04 can manage each user terminal device 03 based on the first indication information of each user terminal device 03, or specify management policies for specific user terminal devices 03.

[0106] In this embodiment, the user terminal device 03 possesses certain computing capabilities, enabling it to calculate the first indication information and report it to the central office device 01. Since the downlink input optical signal in this optical communication system is broadcast, multiple user terminal devices 03 may simultaneously receive the downlink output optical signal from the second port of the splitter 02. Therefore, multiple user terminal devices 03 can determine their respective first indication information in parallel. Then, each user terminal device 03 transmits its own first indication information in its respective uplink time slot, allowing the central office device 01 to obtain the first indication information from multiple user terminal devices 03 within a short time. This not only reduces the time overhead for the central office device 01 to obtain the first indication information from multiple user terminal devices 03 but also saves the computing overhead required for the central office device 01 to calculate the first indication information.

[0107] In another possible implementation, the central office equipment 01 can collect power information (i.e., the power of the first optical signal and the power of the second optical signal received by each user terminal equipment 03) to determine the first indication information of each user terminal equipment 03. For example, user terminal equipment 03 can send the optical power of the first optical signal and the optical power of the second optical signal to the central office equipment 01. Correspondingly, the central office equipment 01 can receive the optical power of the first optical signal and the optical power of the second optical signal from different user terminal equipment 03. For example, if the optical splitter 02 in the optical communication system connects three user terminal equipment 03 (i.e., user terminal equipment #1, user terminal equipment #2, and user terminal equipment #3), the central office equipment 01 receives the power information (i.e., the optical power of the first optical signal and the optical power of the second optical signal received by the user terminal equipment) reported by user terminal equipment #1, user terminal equipment #2, and user terminal equipment #3, respectively. Then, the central office equipment 01 determines the first indication information of the corresponding user terminal equipment 03 based on the optical power of the first optical signal and the optical power of the second optical signal from each user terminal equipment 03. For example, the central office equipment 01 determines the first indication information of the user terminal equipment #1 based on the optical power of the first optical signal and the optical power of the second optical signal reported by the user terminal equipment #1, and determines the first indication information of the user terminal equipment #2 based on the optical power of the first optical signal and the optical power of the second optical signal reported by the user terminal equipment #2, and so on.

[0108] Optionally, the central office device 01 can report the determined first indication information to the network management device 04, so that the network management device 04 can manage each user terminal device 03 based on the first indication information of each user terminal device 03, or specify management policies for specific user terminal devices 03.

[0109] In this embodiment, the central office equipment 01 can obtain the power of the received first optical signal and the power of the received second optical signal detected by each user terminal equipment 03, and then calculate the first indication information of each user terminal equipment 03, which helps to save the computational overhead of the user terminal equipment 03 in calculating the first indication information. In addition, the user terminal equipment 03 only needs to report the detected power information, so it is not required that the user terminal equipment 03 has computing power, reducing the complexity of the user terminal equipment 03. This allows the solution to be applied to user terminal equipment 03 that does not have computing power, improving the flexibility of the solution.

[0110] In another possible implementation, the network management device 04 determines the first indication information for each user terminal device 03. For example, the central office device 01 can receive the power information of each user terminal device 03 (e.g., the optical power of the first optical signal and the optical power of the second optical signal received by the user terminal device 03), and can report the collected power information of each user terminal device 03 to the network management device 04. Then, the network management device 04 can determine the first indication information based on the received power information of each user terminal device 03.

[0111] In this embodiment, the network management device 04 has strong processing (or computing) capabilities, enabling it to determine the first indication information of each user terminal device 03 based on the power information received from each user terminal device 03 within a short time. This helps save the computational overhead of the user terminal device 03 in calculating the first indication information, and also helps save the computational overhead of the central office device 01 in calculating the first indication information.

[0112] It should be noted that the first indication information in this embodiment can be implemented in any of the aforementioned methods, and this embodiment is not limited to any one of them. For details on the specific calculation principle, please refer to the example above, which will not be repeated here.

[0113] Furthermore, it should be noted that the first indication information identifies user terminal equipment 03, and user terminal equipment 03 corresponds one-to-one with the second port of optical splitter 02 via branch optical fibers. Therefore, the first indication information also has a certain correspondence with the second port of optical splitter 02. For example, if N=4, and the splitting ratios of the second optical signal for the four second ports are 10%, 20%, 30%, and 40%, respectively, and the first indication information is represented by a first ratio, then the first indication information for the user terminal equipment corresponding to the second port with a splitting ratio of 10% is R1=0.4, the first indication information for the user terminal equipment corresponding to the second port with a splitting ratio of 20% is R2=0.8, the first indication information for the user terminal equipment corresponding to the second port with a splitting ratio of 30% is R3=1.2, and the first indication information for the user terminal equipment corresponding to the second port with a splitting ratio of 40% is R4=1.6. Therefore, given the known correspondence between the information of multiple second ports of optical splitter 02 and the first indication information, the information of the second port of optical splitter 02 corresponding to user terminal equipment 03 can be determined based on the first indication information. In this embodiment, the correspondence between the first indication information of the user terminal device 03 and the port information of the second port of the optical splitting device 02 is referred to as the first correspondence. The optional port information of the second port includes the number of the second port and / or the splitting ratio of the second port to the second optical signal. The number of the second port can be a logical number, and different second ports can have different numbers. Furthermore, this first correspondence can be in the form of a graph, a bitmap, or an array; this embodiment is not limited to any of these.

[0114] For example, if N=4, and the splitting ratios of the second optical signal by the four second ports are 10%, 20%, 30%, and 40%, respectively, then the first correspondence can be shown in Table 1 below:

[0115] Table 1

[0116]

[0117] In the example shown in Table 1, if the first indication information of user terminal device #1 is known to be 0.4, then based on the first correspondence shown in Table 1, the port number of the second port corresponding to user terminal device #1 can be determined to be #001, and the splitting ratio of the second optical signal by the second port is 10%; if the first indication information of user terminal device #2 is known to be 0.8, then based on the first correspondence shown in Table 1, the port number of the second port corresponding to user terminal device #2 can be determined to be #002, and the splitting ratio of the second optical signal by the second port is 20%; and so on, which will not be elaborated here.

[0118] Specifically, in this embodiment, either the central office device 01 determines the port information of the second port based on the first indication information, or the network management device 04 determines the port information of the second port based on the first indication information. Examples are given below:

[0119] In one possible implementation, the central office equipment 01 stores a first correspondence, which indicates the correspondence between the first indication information of the user terminal equipment 03 and the port information of the second port of the optical splitter 02. The central office equipment 01 determines the port information of the second port of the optical splitter 02 connected to the user terminal equipment 03 based on the first correspondence and the first indication information of the user terminal equipment 03.

[0120] Optionally, the central office device 01 can also send the port information of the second port corresponding to the first indication information to the network management device 04. Optionally, the central office device 01 may send the port information of the second port corresponding to the first indication information of multiple user terminal devices 03. To facilitate differentiation, the central office device 01 can carry the first indication information and / or the identification information of the user terminal device 03 (e.g., the factory serial number of the user terminal device 03 or the logical identifier assigned by the central office device 01 to the user terminal device 03, etc.) in the message carrying the port information. For example, if the first indication information of user terminal device #1 is 0.4, the corresponding port information of the second port is #001, and the identification information of user terminal device #1 is #1, then the message sent by the central office device 01 to the network management device 04 contains {0.4, #001, #1}, where "#1" represents the identifier of the user terminal device, "0.4" represents the first indication information of the user terminal device, and "#001" represents the port number of the second port connected to the user terminal device.

[0121] In this embodiment, the central office equipment stores a first correspondence relationship. Based on this relationship and the first indication information of the user terminal equipment, it can determine the port information of the second port connected to each user terminal equipment, and then report this port information to the network management equipment. This helps save the processing overhead of the network management equipment in determining the port information of the second port. Furthermore, the network management equipment can collect the port information of the second ports corresponding to multiple user terminal equipment managed by the central office equipment at once, granularity. This facilitates the network management equipment's classification and management of user terminal equipment at the central office equipment level when collecting port information reported by multiple central office equipment, thereby improving its management efficiency.

[0122] In another possible implementation, the network management device 04 stores a first correspondence relationship, which indicates the correspondence between the first indication information of the user terminal device 03 and the port information of the second port of the optical splitter 02. The network management device 04 can obtain the first indication information of the user terminal device 03, and then, based on the first correspondence relationship and the first indication information of the user terminal device 03, the network management device 04 determines the port information of the second port of the optical splitter 02 connected to the user terminal device 03. The first indication information of the user terminal device 03 obtained by the network management device 04 can be determined by the network management device 04 itself or by the central office device 01; please refer to the preceding description for details, which will not be repeated here.

[0123] In this embodiment, the network management device stores a first correspondence relationship, and can determine the port information of the second port connected to the user terminal device based on the first correspondence relationship and the first indication information of the user terminal device, which helps to save the processing overhead of the central office device and the user terminal device.

[0124] Furthermore, network management device 04 determines the topology information of the optical communication system based on the port information corresponding to multiple user terminal devices 03. This topology information is used to indicate the connection relationships of various devices included in the optical communication system. For example, the topology information can reflect which central office devices and user terminal devices are included in the optical communication system, and how the aforementioned central office devices and user terminal devices are connected. Network management device 04 generates topology information so that it can view the connection relationships of various network devices in the network based on the topology information, thereby improving the management efficiency of the network management device. Therefore, this embodiment can solve the problem of identifying the topology connection relationship between ODN ports (e.g., the second port of the optical splitter 02) and end CEPs (e.g., user terminal devices) in a P2MP network, realizing the correspondence between the connection relationships of CPEs and ODN ports, and solving the technical problem of the current P2MP network connection relationships being invisible.

[0125] Based on the same principle, embodiments of this application also provide a solution for uplink transmission.

[0126] Figure 2B This is a schematic diagram of the optical communication system provided in the embodiments of this application during uplink transmission.

[0127] like Figure 2BAs shown, each user terminal device 03 is used to send an uplink input optical signal to the second port of the optical splitter 02 corresponding to that user terminal device 03. The uplink input optical signal includes a third optical signal with a third wavelength and a fourth optical signal with a fourth wavelength, the third wavelength and the fourth wavelength being different. It should be noted that the wavelength of the third optical signal (i.e., the third wavelength) is related to the wavelength of the first optical signal (i.e., the first wavelength), and the wavelength of the fourth optical signal (i.e., the fourth wavelength) is related to the wavelength of the second optical signal (i.e., the second wavelength). For example, if the wavelength of the first optical signal transmitted downlink (i.e., the first wavelength) is 1490nm, then the wavelength of the third optical signal transmitted uplink (i.e., the third wavelength) is 1310nm. As another example, if the wavelength of the second optical signal transmitted downlink (i.e., the second wavelength) is 1577nm, then the wavelength of the fourth optical signal transmitted uplink (i.e., the fourth wavelength) is 1270nm.

[0128] It should be noted that the optical power of the third optical signal included in the uplink input optical signal sent by different user terminal devices 03 is the same, and the optical power of the fourth optical signal included in the uplink input optical signal sent by different user terminal devices 03 is also the same.

[0129] Furthermore, the optical splitter 02 processes the uplink input optical signal received through the second port and outputs it through the first port to obtain the corresponding uplink output optical signal. Since the insertion loss of the third optical signal in the uplink input optical signal is the same for all the second ports, but the insertion loss of the fourth optical signal in the uplink input optical signal is different for each of the multiple second ports, after processing by the optical splitter 02, the uplink output optical signals through different second ports contain the same optical power of the third optical signal, but the uplink output optical signals through different second ports contain different optical power of the fourth optical signal.

[0130] The central office equipment 01 receives the uplink output optical signal from the user terminal equipment 03 from the optical splitter 02, and detects the optical power of the third optical signal and the optical power of the fourth optical signal in the uplink output optical signal. It should be noted that the central office equipment 01 detects the optical power of the third optical signal and the optical power of the fourth optical signal in the uplink output optical signal at the same time. This helps to avoid interference introduced by changes in the optical power of the optical signal over time, and improves the measurement accuracy of the optical power of the third optical signal and the fourth optical signal.

[0131] In addition, the optical power of the third optical signal and the optical power of the fourth optical signal are used to determine the second port of the optical splitter 02 connected to the user terminal equipment 03.

[0132] In the aforementioned optical communication system, although the uplink input optical signals transmitted by different user terminal devices 03 have the same optical power, these signals pass through different second ports of the optical splitter 02. Since the different second ports attenuate the third optical signal the same but attenuate the fourth optical signal differently, the optical power of the third optical signal contained in the uplink output optical signals received by the central office equipment after passing through different second ports is the same, while the optical power of the fourth optical signal contained in the uplink output optical signals received by the central office equipment after passing through different second ports is different. Because different user terminal devices are connected to different second ports of the optical splitter, the optical power of the third and fourth optical signals can be used to determine the second port of the optical splitter connected to the user terminal device. This facilitates the correspondence between user terminal devices and the second ports of the optical splitter, thereby clarifying the network topology of the optical communication system and improving its management efficiency.

[0133] In one possible implementation, the optical power of the third optical signal and the optical power of the fourth optical signal are used to determine the second indication information of the user terminal device, which is used to identify the user terminal device among multiple user terminal devices.

[0134] Optionally, the second indication information is determined by calculation based on the optical power of the third optical signal and the optical power of the fourth optical signal. Optionally, the second indication information is determined based on a second ratio and / or a second difference, where the second ratio is the ratio of the optical power of the fourth optical signal to the optical power of the third optical signal, and the second difference is the difference between the optical power of the fourth optical signal and the optical power of the third optical signal.

[0135] The calculation principle of the second indication information in the uplink scheme is the same as the calculation process of the first indication information in the downlink scheme. Please refer to the previous text for details. Figure 2A The relevant descriptions in the corresponding embodiments will not be repeated here.

[0136] Unlike the downlink scheme, in the uplink scheme, the communication device that determines the second indication information can be either the central office equipment 01 or the network management equipment 04. Examples are given below:

[0137] In one possible implementation, the central office equipment 01 determines the second indication information. For example, the central office equipment 01 can determine the second indication information of the user terminal equipment 03 based on the optical power of the third optical signal and the optical power of the fourth optical signal in the detected uplink output optical signals.

[0138] Optionally, the central office equipment 01 can report the determined second indication information to the network management equipment 04, so that the network management equipment 04 can manage each user terminal equipment 03 based on the second indication information of each user terminal equipment 03, or specify management policies for specific user terminal equipment 03.

[0139] In this embodiment, the central office equipment 01 can detect the power of the third optical signal and the power of the fourth optical signal in each uplink output optical signal, and then calculate the second indication information of each user terminal equipment 03, which helps to save the computational overhead of the management equipment 04 in calculating the second indication information.

[0140] In another possible implementation, the network management device 04 determines the second indication information. For example, the central office device 01 can send the optical power of the third optical signal and the optical power of the fourth optical signal in the detected uplink output optical signal to the network management device 04, and then the network management device 04 determines the second indication information of the user terminal device 03 based on the optical power of the third optical signal and the optical power of the fourth optical signal.

[0141] In this embodiment, the network management device 04 has strong processing (or computing) capabilities, enabling it to determine the second indication information of each user terminal device 03 based on the power information received from each user terminal device 03 within a short time. This helps save the computational overhead of the central office device 01 in calculating the second indication information.

[0142] Furthermore, in this embodiment, either the central office device 01 determines the port information of the second port based on the second indication information, or the network management device 04 determines the port information of the second port based on the second indication information. Examples are given below:

[0143] In one possible implementation, the central office equipment 01 stores a second correspondence, which indicates the correspondence between the second indication information of the user terminal equipment 03 and the port information of the second port of the optical splitter 02. The central office equipment 01 determines the port information of the second port of the optical splitter 02 connected to the user terminal equipment 03 based on the second correspondence and the second indication information of the user terminal equipment 03.

[0144] Optionally, the central office device 01 can also send the port information of the second port corresponding to the second indication information to the network management device 04. Optionally, the central office device 01 may send the port information of the second port corresponding to the second indication information of multiple user terminal devices 03. To facilitate differentiation, the central office device 01 can carry the second indication information and / or the identification information of the user terminal device 03 (e.g., the factory serial number of the user terminal device 03 or the logical identifier assigned by the central office device 01 to the user terminal device 03, etc.) in the message carrying the port information. For example, if the second indication information of user terminal device #1 is 0.4, the port information of the corresponding second port is #001, and the identification information of user terminal device #1 is #1, then the message sent by the central office device 01 to the network management device 04 contains {0.4, #001, #1}, where "#1" represents the identifier of the user terminal device, "0.4" represents the second indication information of the user terminal device, and "#001" represents the port number of the second port connected to the user terminal device.

[0145] In this embodiment, the central office equipment stores a second correspondence relationship. Based on this relationship and the second indication information of the user terminal equipment, it can determine the port information of the second port connected to each user terminal equipment, and then report this port information to the network management equipment. This saves the processing overhead of the network management equipment in determining the port information of the second port. Furthermore, the network management equipment can collect the port information of the second ports corresponding to multiple user terminal equipment managed by the central office equipment at once, granularity. This facilitates the network management equipment's classification and management of user terminal equipment at the central office equipment level when collecting port information reported by multiple central office equipment, thereby improving the management efficiency of the network management equipment.

[0146] In another possible implementation, the network management device 04 stores a second correspondence, which indicates the correspondence between the second indication information of the user terminal device 03 and the port information of the second port of the optical splitter 02. The network management device 04 can obtain the second indication information of the user terminal device 03, and then, based on the second correspondence and the second indication information of the user terminal device 03, the network management device 04 determines the port information of the second port of the optical splitter 02 connected to the user terminal device 03. The second indication information of the user terminal device 03 obtained by the network management device 04 can be determined by the network management device 04 itself or by the central office device 01; please refer to the preceding description for details, which will not be repeated here.

[0147] In this embodiment, the network management device stores a second correspondence relationship, which can determine the port information of the second port connected to the user terminal device based on the second correspondence relationship and the second indication information of the user terminal device, which helps to save the processing overhead of the central office device and the user terminal device.

[0148] Furthermore, network management device 04 determines the topology information of the optical communication system based on the port information corresponding to multiple user terminal devices 03. This topology information is used to indicate the connection relationships of various devices included in the optical communication system. For example, the topology information can reflect which central office devices and user terminal devices are included in the optical communication system, and how the aforementioned central office devices and user terminal devices are connected. Network management device 04 generates topology information so that it can view the connection relationships of various network devices in the network based on the topology information, thereby improving the management efficiency of the network management device. Therefore, this embodiment can solve the problem of identifying the topology connection relationship between ODN ports (e.g., the second port of the optical splitter 02) and end CEPs (e.g., user terminal devices) in a P2MP network, realizing the correspondence between the connection relationships of CPEs and ODN ports, and solving the technical problem of the current P2MP network connection relationships being invisible.

[0149] In addition, this application also provides an optical signal processing method. Figure 3 A flowchart of one embodiment of the optical signal processing method provided in this application. Figure 3 This application describes the signaling interaction during downlink communication in the optical communication system provided. In this embodiment, the signaling interaction between the user terminal equipment, the central office equipment, and the management equipment is used as an example. Of course, the entity executing the user terminal equipment's actions in this method can also be a unit, module, or chip within the user terminal equipment; the entity executing the central office equipment's actions in this method can also be a unit, module, or chip within the central office equipment; and the entity executing the management equipment's actions in this method can also be a unit, module, or chip within the management equipment. This embodiment does not specifically limit this. For example, as shown... Figure 3 As shown, the optical signal processing method includes the following steps:

[0150] Step 301: The central office equipment sends downlink input optical signal; correspondingly, the optical splitter receives downlink input optical signal from the central office equipment.

[0151] The downlink input optical signal includes a first optical signal with a first wavelength and a second optical signal with a second wavelength.

[0152] Step 302: The optical splitter outputs multiple downlink output optical signals based on the received downlink input optical signals; correspondingly, the user terminal device receives the downlink output optical signal of the corresponding second port.

[0153] Each downlink output optical signal includes a first optical signal and a second optical signal. The first optical signals in multiple downlink output optical signals have the same optical power, but the second optical signals in each downlink output optical signal have different optical powers. For details on how the splitter processes optical signals, please refer to the previous text. Figure 2A The relevant descriptions in the corresponding embodiments will not be repeated here.

[0154] Step 303: The user terminal device detects the optical power of the first optical signal and the optical power of the second optical signal in the downlink output optical signal.

[0155] Optionally, the optical power of the first optical signal and the optical power of the second optical signal are used to determine the second port of the optical splitter connected to the user terminal equipment.

[0156] Optionally, the optical power of the first optical signal and the optical power of the second optical signal are used to determine the first indication information of the user terminal equipment. The first indication information is used to determine the second port of the optical splitter connected to the user terminal equipment. The first indication information of the user terminal equipment is used to identify the user terminal equipment among multiple user terminal equipment.

[0157] Optionally, the first indication information is determined by calculation results obtained based on the optical power of the first optical signal and the optical power of the second optical signal.

[0158] Optionally, the first indication information is determined based on a first ratio and / or a first difference, where the first ratio is the ratio of the optical power of the second optical signal to the optical power of the first optical signal, and the first difference is the difference between the optical power of the second optical signal and the optical power of the first optical signal.

[0159] For an introduction to the first instruction information, please refer to the preceding text. Figure 2A The relevant descriptions in the corresponding embodiments will not be repeated here.

[0160] Step 304: The user terminal device sends the optical power of the first optical signal and the optical power of the second optical signal to the central office device; correspondingly, the central office device receives the optical power of the first optical signal and the optical power of the second optical signal from the user terminal device.

[0161] In this embodiment, if the first indication information is determined by the network management device, the central office device and the network management device will execute option 1 (i.e., execute steps 305a and 306a); if the first indication information is determined by the central office device, the central office device will execute option 2 (i.e., execute steps 305b and 306b) or option 3 (i.e., execute only step 305b and not step 306b).

[0162] Step 305a: The central office equipment sends the optical power of the first optical signal and the optical power of the second optical signal to the network management equipment; correspondingly, the network management equipment receives the optical power of the first optical signal and the optical power of the second optical signal from the central office equipment.

[0163] It should be noted that the central office equipment can report the power information of multiple user terminal devices at once (i.e., the optical power of the first optical signal and the optical power of the second optical signal), or it can immediately report the power information of each user terminal device as soon as it obtains it. This embodiment does not limit this.

[0164] Step 306a: The network management device determines the first indication information of the user terminal device based on the optical power of the first optical signal and the optical power of the second optical signal.

[0165] Step 305b: The central office equipment determines the first indication information of the user terminal equipment based on the optical power of the first optical signal and the optical power of the second optical signal.

[0166] Step 306b: The central office equipment sends the first instruction information to the network management equipment.

[0167] Please refer to the preceding text for the calculation method of the first indication information. Figure 2A The relevant descriptions in the corresponding embodiments will not be repeated here.

[0168] If the network management device can obtain the first indication information, for example, if the central office device and the network management device execute option 1 (i.e., execute steps 305a and 306a) or option 2 (i.e., execute steps 305b and 306b), then the network management device determines the port information of the second port of the optical splitter connected to the user terminal device, that is, the network management device executes step 307a. Optionally, the central office device does not execute step 307b.

[0169] If the central office equipment can obtain the first instruction information, for example, if the central office equipment executes option 3 (i.e., only executes step 305b and does not execute step 306b), then the central office equipment executes step 307b after executing step 305b.

[0170] Step 307a: The network management device determines the port information of the second port of the optical splitter connected to the user terminal device based on the first correspondence and the first indication information of the user terminal device.

[0171] For example, the network management device stores a first correspondence, which is used to indicate the correspondence between the first indication information of the user terminal device and the port information of the second port of the optical splitter.

[0172] Optionally, the network management device can also determine the topology information of the optical communication system based on the port information corresponding to multiple user terminal devices.

[0173] Step 307b: The central office equipment determines the port information of the second port of the optical splitter connected to the user terminal equipment based on the first correspondence and the first indication information of the user terminal equipment.

[0174] For example, the central office equipment stores a first correspondence, which is used to indicate the correspondence between the first indication information of the user terminal equipment and the port information of the second port of the optical splitter.

[0175] Optionally, the central office equipment can also determine the topology information of the optical communication system based on the port information corresponding to multiple user terminal equipment.

[0176] In this embodiment, since different user terminal devices receive different downlink output optical signals after processing by the optical splitter—that is, different user terminal devices receive the same optical power for the first optical signal but different optical power for the second optical signal—different user terminal devices can be distinguished based on the optical power of the first and second optical signals measured by the user terminal devices. Because the difference in the optical power of the second optical signal from different user terminal devices is due to the different second ports of the optical splitter, the optical power of the first and second optical signals can be used to determine the second port of the optical splitter connected to the user terminal device. This facilitates the correspondence between user terminal devices and the second ports of the optical splitter, thereby clarifying the network topology of the optical communication system and improving the management efficiency of the optical communication system.

[0177] Figure 4 A flowchart of another embodiment of the optical signal processing method provided in this application. Figure 4 This application describes the signaling interaction during uplink communication in the optical communication system provided. In this embodiment, the signaling interaction between the user terminal equipment, the central office equipment, and the management equipment is used as an example. Of course, the entity executing the user terminal equipment's actions in this method can also be a unit, module, or chip within the user terminal equipment; the entity executing the central office equipment's actions in this method can also be a unit, module, or chip within the central office equipment; and the entity executing the management equipment's actions in this method can also be a unit, module, or chip within the management equipment. This embodiment does not specifically limit this. For example, as shown... Figure 4 As shown, the optical signal processing method includes the following steps:

[0178] Step 401: The user terminal device sends an uplink input optical signal.

[0179] For example, if uplink optical communication uses time-division multiplexing, multiple user terminal devices transmit uplink input optical signals in their respective uplink time slots. Each user terminal device's uplink input optical signal includes a third optical signal and a fourth optical signal, where the third optical signal is an optical signal with a third wavelength, and the fourth optical signal is an optical signal with a fourth wavelength. Furthermore, the optical power of the third optical signal in the uplink input optical signals from different user terminal devices is the same, and the optical power of the fourth optical signal is also the same.

[0180] Step 402: The optical splitter receives the uplink input optical signal from the corresponding user terminal device through the second port, and outputs the uplink output optical signal corresponding to the user terminal device through the first port.

[0181] Each user terminal device's uplink output optical signal includes a third optical signal and a fourth optical signal. The third optical signal is an optical signal with a third wavelength, and the fourth optical signal is an optical signal with a fourth wavelength. Furthermore, the optical power of the third optical signal in the uplink output optical signals from different user terminal devices is the same, but the optical power of the fourth optical signal is different for each device.

[0182] Step 403: The central office equipment detects the optical power of the third optical signal and the optical power of the fourth optical signal in the uplink output optical signal.

[0183] Optionally, the optical power of the third optical signal and the optical power of the fourth optical signal are used to determine the second port of the optical splitter connected to the user terminal equipment.

[0184] Optionally, the optical power of the third optical signal and the optical power of the fourth optical signal are used to determine the second indication information of the user terminal equipment. The second indication information is used to determine the second port of the optical splitter connected to the user terminal equipment. The second indication information of the user terminal equipment is used to identify the user terminal equipment among multiple user terminal equipment.

[0185] Optionally, the second indication information is determined by calculation results obtained based on the optical power of the third optical signal and the optical power of the fourth optical signal.

[0186] Optionally, the second indication information is determined based on a second ratio and / or a second difference, wherein the second ratio is the ratio of the optical power of the fourth optical signal to the optical power of the third optical signal, and the second difference is the difference between the optical power of the fourth optical signal and the optical power of the third optical signal.

[0187] In this embodiment, if the second indication information is determined by the network management device, the central office device and the network management device will execute option 1 (i.e., steps 404a and 405a); if the second indication information is determined by the central office device, the central office device and the network management device will execute option 2 (i.e., steps 404b and 405b) or option 3 (i.e., only step 404b is executed, and step 405b is not executed).

[0188] Step 404a: The central office equipment sends the optical power of the third optical signal and the optical power of the fourth optical signal to the network management equipment; correspondingly, the network management equipment receives the optical power of the third optical signal and the optical power of the fourth optical signal from the central office equipment.

[0189] It should be noted that the central office equipment can report the power information of multiple user terminal devices at once (i.e., the optical power of the third optical signal and the optical power of the fourth optical signal), or it can immediately report the power information of each user terminal device as soon as it obtains it to the network management equipment. This embodiment does not limit this.

[0190] Step 405a: The network management device determines the second indication information of the user terminal device based on the optical power of the third optical signal and the optical power of the fourth optical signal.

[0191] Step 404b: The central office equipment determines the second indication information of the user terminal equipment based on the optical power of the third optical signal and the optical power of the fourth optical signal.

[0192] Step 405b: The central office equipment sends a second instruction message to the network management equipment.

[0193] If the network management device can obtain the second indication information, for example, if the central office device and the network management device execute option 1 (i.e., execute steps 404a and 405a) or option 2 (i.e., execute steps 404b and 405b), then the network management device determines the port information of the second port of the optical splitter connected to the user terminal device, i.e., the network management device executes step 406a. Optionally, the central office device does not execute step 406b.

[0194] If the central office equipment can obtain the second instruction information, for example, if the central office equipment executes option 3 (i.e., only executes step 404b and not step 405b), then the central office equipment executes step 406b after executing step 404b.

[0195] Step 406a: The network management device determines the port information of the second port of the optical splitter connected to the user terminal device based on the second correspondence and the second indication information of the user terminal device.

[0196] For example, the network management device stores a second correspondence, which is used to indicate the correspondence between the second indication information of the user terminal device and the port information of the second port of the optical splitter.

[0197] Optionally, the network management device can also determine the topology information of the optical communication system based on the port information corresponding to multiple user terminal devices.

[0198] Step 406b: The central office equipment determines the port information of the second port of the optical splitter connected to the user terminal equipment based on the second correspondence and the second indication information of the user terminal equipment.

[0199] For example, the central office equipment stores a second correspondence, which is used to indicate the correspondence between the second indication information of the user terminal equipment and the port information of the second port of the optical splitter.

[0200] Optionally, the central office equipment can also determine the topology information of the optical communication system based on the port information corresponding to multiple user terminal equipment.

[0201] For some technical details regarding this embodiment, please refer to the preceding text. Figure 2B The relevant descriptions in the corresponding embodiments will not be repeated here.

[0202] In this embodiment, the uplink output optical signals of each user terminal device contain the same optical power for the third optical signal but different optical power for the fourth optical signal. Therefore, the central office equipment can distinguish different user terminal devices based on the measured optical power of the third and fourth optical signals. Since different user terminal devices are connected to different second ports of the optical splitter, the optical power of the third and fourth optical signals can be used to determine the second port of the optical splitter connected to the user terminal device. This facilitates the correspondence between user terminal devices and the second ports of the optical splitter, thereby clarifying the network topology of the optical communication system and improving the management efficiency of the optical communication system.

[0203] Furthermore, embodiments of this application also provide a communication device 50, such as... Figure 5 As shown, Figure 5 This is a schematic diagram of the structure of a communication device 50 provided in an embodiment of this application. Figure 2A , Figure 2B , Figure 3 or Figure 4 The specific implementation of the user terminal device in the flowchart shown can be found in [reference]. Figure 5 The internal structure of the communication device 50 shown.

[0204] like Figure 5 As shown, the communication device 50 includes a first transceiver module 501 and a second transceiver module 502. Optionally, the communication device 50 further includes a first processing module 503 and a second processing module 504. Optionally, the communication device 50 further includes a first power detection module 505 and a second power detection module 506.

[0205] The first transceiver module 501 receives a first optical signal output from the second port of the optical splitter. Optionally, the first transceiver module 501 further converts the first optical signal into a first electrical signal, and the first processing module 503 processes the first electrical signal from the first transceiver module 501. Furthermore, the first transceiver module 501 can also provide the first optical signal to the first power detection module 505, so that the first power detection module 505 determines the optical power of the first optical signal. Optionally, the first power detection module 505 can provide the optical power of the first optical signal to the first processing module 503. The second transceiver module 502 receives a second optical signal output from the second port of the optical splitter. Optionally, the second transceiver module 502 further converts the second optical signal into a second electrical signal, and the second processing module 504 processes the second electrical signal from the second transceiver module 502. Furthermore, the second transceiver module 502 can also provide the second optical signal to the second power detection module 506, so that the second power detection module 506 determines the optical power of the second optical signal. Optionally, the second power detection module 506 can provide the optical power of the second optical signal to the second processing module 504.

[0206] Optionally, the communication device 50 can be a dual-wavelength CPE, where the first transceiver module 501 and the second transceiver module 502 are two single-fiber bidirectional optical devices (BOSAs) with different wavelengths within the dual-wavelength CPE. The BOSA is a component that combines the transmitting optical sub-assembly (TOSA) and the receiving optical sub-assembly (ROSA) into one unit, forming a single-fiber bidirectional optical module. The BOSA internally includes both transmission and reception functions, enabling a single optical fiber to transmit and receive data simultaneously, greatly improving fiber utilization and transmission efficiency.

[0207] Optionally, the first processing module 503 and the second processing module 504 can be two processing chips in a dual-wavelength CPE, used to process electrical signals corresponding to optical signals of different wavelengths. Optionally, the first processing module 503 and the second processing module 504 can interact with each other. For example, the first processing module 503 and the second processing module 504 can exchange the optical power of the first optical signal and the optical power of the second optical signal, so that one of the processing modules (e.g., the first processing module 503 or the second processing module 504) can determine first indication information based on the optical power of the first optical signal and the optical power of the second optical signal. Optionally, the first processing module 503 and the second processing module 504 can also be integrated into a single processing module; this embodiment is not limited to this. Exemplarily, the first processing module 503 and the second processing module 504 can be processing chips, such as a MAC chip.

[0208] Optionally, the first power detection module 505 and the second power detection module 506 can be photoelectric detection devices (e.g., photoelectric detectors (PD)). Optionally, the first power detection module 505 and the second power detection module 506 can be a single power detection module; this embodiment is not limited to this.

[0209] For example, such as Figure 6 As shown, taking the communication device 50 as user terminal equipment #1 as an example, the first transceiver module 501 can be BOSA1, used to receive downlink output optical signals with a wavelength of 1490nm, and the second transceiver module 502 can be BOSA2, used to receive downlink output optical signals with a wavelength of 1577nm. Optionally, BOSA1 can also be used to transmit uplink optical signals with a wavelength of 1310nm, and BOSA2 can also be used to transmit uplink optical signals with a wavelength of 1270nm. The first processing module 503 can be processing chip 1 (e.g., MAC chip 1), used to process the electrical signals corresponding to the downlink output optical signals with a wavelength of 1490nm. The first power detection module 505 can be power detection 1, used to detect the optical power of the received downlink output optical signals with a wavelength of 1490nm. In addition, the second processing module 504 can be processing chip 2 (e.g., MAC chip 2), used to process the electrical signals corresponding to the downlink output optical signals with a wavelength of 1577nm. The second power detection module 506 can be power detector 2, used to detect the optical power of the received downlink output optical signal with a wavelength of 1577nm.

[0210] Furthermore, embodiments of this application also provide a communication device 70, such as... Figure 7 As shown, Figure 7 This is a schematic diagram of the structure of a communication device 70 provided in an embodiment of this application. Figure 2A , Figure 2B , Figure 3 or Figure 4 The specific implementation of the central office equipment in the flowchart shown can be found in [reference]. Figure 7 The internal structure of the communication device 70 shown.

[0211] like Figure 7 As shown, the communication device 70 includes a third transceiver module 701 and a fourth transceiver module 702. Optionally, the communication device 70 further includes a third processing module 703 and a fourth processing module 704. Optionally, the communication device 70 further includes a third power detection module 705 and a fourth power detection module 706.

[0212] The third transceiver module 701 receives a third optical signal from the uplink output optical signal. Optionally, the third transceiver module 701 also converts the third optical signal into a third electrical signal, and the third processing module 703 processes the third electrical signal from the third transceiver module 701. Furthermore, the third transceiver module 701 can also provide the third optical signal to the third power detection module 705, so that the third power detection module 705 determines the optical power of the third optical signal. Optionally, the third power detection module 705 can provide the optical power of the third optical signal to the third processing module 703. The fourth transceiver module 702 receives a fourth optical signal from the uplink output optical signal. Optionally, the fourth transceiver module 702 also converts the fourth optical signal into a fourth electrical signal, and the fourth processing module 704 processes the fourth electrical signal from the fourth transceiver module 702. Furthermore, the fourth transceiver module 702 can also provide the fourth optical signal to the fourth power detection module 706, so that the fourth power detection module 706 determines the optical power of the fourth optical signal. Optionally, the fourth power detection module 706 can provide the optical power of the fourth optical signal to the fourth processing module 704.

[0213] Optionally, the communication device 70 can be a dual-wavelength central office device, with the third transceiver module 701 and the fourth transceiver module 702 being two different wavelength BOSAs in the dual-wavelength central office device.

[0214] Optionally, the third processing module 703 and the fourth processing module 704 can be two processing chips in a dual-wavelength central office device, used to process electrical signals corresponding to optical signals of different wavelengths. Optionally, the third processing module 703 and the fourth processing module 704 can interact with each other. For example, the third processing module 703 and the fourth processing module 704 can exchange the optical power of the third optical signal and the optical power of the fourth optical signal, so that one of the processing modules (e.g., the third processing module 703 or the fourth processing module 704) can determine the second indication information based on the optical power of the third optical signal and the optical power of the fourth optical signal. Optionally, the third processing module 703 and the fourth processing module 704 can also be integrated into a single processing module; this embodiment is not limited to this. Exemplarily, the third processing module 703 and the fourth processing module 704 can be processing chips, such as a MAC chip.

[0215] Optionally, the third power detection module 705 and the fourth power detection module 706 can be photoelectric detection devices (e.g., photodetectors PD). Optionally, the third power detection module 705 and the fourth power detection module 706 can be a single power detection module; this embodiment is not limited to this.

[0216] For example, such as Figure 8 As shown, taking the communication device 70 as an example of a central office device, the third transceiver module 701 can be BOSA1, used to transmit downlink input optical signals with a wavelength of 1490nm, and the fourth transceiver module 702 can be BOSA2, used to transmit downlink input optical signals with a wavelength of 1577nm. Optionally, BOSA1 can also be used to receive uplink output optical signals with a wavelength of 1310nm, and BOSA2 can also be used to receive uplink output optical signals with a wavelength of 1270nm. The third processing module 703 can be processing chip 1 (e.g., MAC chip 1), used to process the electrical signal corresponding to the uplink output optical signal with a wavelength of 1310nm. The third power detection module 705 can be power detection 1, used to detect the optical power of the received uplink optical signal with a wavelength of 1310nm. The fourth processing module 704 can be processing chip 2 (e.g., MAC chip 2), used to process the electrical signal corresponding to the uplink optical signal with a wavelength of 1270nm. The fourth power detection module 706 can be power detection 2, used to detect the optical power of the received uplink optical signal with a wavelength of 1270nm.

[0217] Furthermore, embodiments of this application also provide a communication device 90, such as... Figure 9 As shown, Figure 9 This is a schematic diagram of the structure of a communication device 90 provided in an embodiment of this application. Figure 2A , Figure 2B , Figure 3 or Figure 4The specific implementation of the network management device in the flowchart shown can be found in [reference needed]. Figure 9 The internal structure of the communication device 90 shown.

[0218] like Figure 9 As shown, the communication device 90 may include a processor 901 and a transceiver 902, with the processor 901 coupled to the transceiver 902. The processor 901 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL), or any combination thereof. The processor 901 may refer to a single processor or may include multiple processors; no specific limitation is made here.

[0219] The aforementioned transceiver 902 can also be referred to as a transceiver unit, transceiver, transceiver device, etc. Optionally, the device in the transceiver unit that performs the receiving function can be regarded as the receiving unit, and the device in the transceiver unit that performs the transmitting function can be regarded as the transmitting unit. That is, the transceiver unit includes a receiving unit and a transmitting unit. The receiving unit can also be referred to as a receiver, input port, receiving circuit, etc., and the transmitting unit can be referred to as a transmitter, transmitter, or transmitting circuit, etc.

[0220] Optionally, the communication device 90 further includes a memory 903. The processor 901 is coupled to the memory 903. The memory 903 is primarily used to store software programs and data. The memory 903 can exist independently, connected to the processor 901. Optionally, the memory 903 can be integrated with the processor 901, for example, integrated within one or more chips. The memory 903 can store program code executing the technical solutions of the embodiments of this application, and its execution is controlled by the processor 901. The various types of computer program code being executed can also be considered as drivers for the processor 901. The memory 903 can include volatile memory, such as random-access memory (RAM); the memory can also include non-volatile memory, such as read-only memory (ROM), flash memory, hard disk drive (HDD), or solid-state drive (SSD); the memory 903 can also include combinations of the above types of memory. The memory 903 can refer to a single memory or include multiple memories. For example, the memory 903 is used to store various types of data. For instance, the memory 903 is used to store a first correspondence, which indicates the correspondence between first indication information of a user terminal device and port information of the second port of the optical splitter. As another example, the memory 903 is used to store first indication information corresponding to each user terminal device, which is used to identify the user terminal device among multiple user terminal devices. As yet another example, the memory 903 is used to store a second correspondence, which indicates the correspondence between second indication information of a user terminal device and port information of the second port of the optical splitter. As yet another example, the memory 903 is used to store second indication information corresponding to each user terminal device, which is used to identify the user terminal device among multiple user terminal devices.

[0221] In one implementation, the communication device 90 is used to implement Figure 3 The corresponding method embodiment describes the function of the network management device. Specifically, the transceiver 902 is used to receive the optical power of the first optical signal and the optical power of the second optical signal from the user terminal device; the processor 901 is used to determine the first indication information of the user terminal device based on the optical power of the first optical signal and the optical power of the second optical signal, and the first indication information of the user terminal device is used to identify the user terminal device among multiple user terminal devices.

[0222] In one possible implementation, the processor 901 is further configured to determine the port information of the second port of the optical splitter connected to the user terminal device based on the first correspondence and the first indication information of the user terminal device, wherein the first correspondence is used to indicate the correspondence between the first indication information of the user terminal device and the port information of the second port of the optical splitter.

[0223] Optionally, the first indication information is determined based on a first ratio and / or a first difference, where the first ratio is the ratio of the optical power of the second optical signal to the optical power of the first optical signal, and the first difference is the difference between the optical power of the second optical signal and the optical power of the first optical signal.

[0224] In one possible implementation, the processor 901 is further configured to determine the topology information of the optical communication system based on the port information corresponding to multiple user terminal devices.

[0225] In another implementation, the communication device 90 is used to implement Figure 3 The corresponding method embodiment describes the function of the network management device. Specifically, the transceiver 902 is used to receive the optical power of the third optical signal and the optical power of the fourth optical signal from the user terminal device; the processor 901 is used to determine the second indication information of the user terminal device based on the optical power of the third optical signal and the optical power of the fourth optical signal, and the second indication information of the user terminal device is used to identify the user terminal device among multiple user terminal devices.

[0226] In one possible implementation, the processor 901 is further configured to determine the port information of the fourth port of the optical splitter connected to the user terminal device based on the second correspondence and the second indication information of the user terminal device, wherein the second correspondence is used to indicate the correspondence between the second indication information of the user terminal device and the port information of the second port of the optical splitter.

[0227] Optionally, the second indication information is determined based on a second ratio and / or a second difference, wherein the second ratio is the ratio of the optical power of the fourth optical signal to the optical power of the third optical signal, and the second difference is the difference between the optical power of the fourth optical signal and the optical power of the third optical signal.

[0228] Please refer to the preceding text for details. Figure 2A , Figure 2B , Figure 3 or Figure 4 The relevant descriptions in the corresponding embodiments will not be repeated here.

[0229] like Figure 10As shown, this application also provides a communication device 100. The communication device 100 can be a user terminal device, a central office device, or a network management device, or it can be a component of the user terminal device, central office device, or network management device (e.g., an integrated circuit, a chip, etc.). The communication device 100 can also be other communication modules used to implement the methods in the method embodiments of this application.

[0230] The communication device 100 may include a processing module 1001 (or processing unit). Optionally, it may also include an interface module 1002 (or transceiver unit or transceiver module) and a storage module 1003 (or storage unit). The interface module 1002 is used to enable communication with other devices. The interface module 1002 may be, for example, a transceiver module or an input / output module.

[0231] In one possible design, such as Figure 10 One or more modules may be implemented by one or more processors, or by one or more processors and memory; or by one or more processors and transceivers; or by one or more processors, memory, and transceivers. This application does not limit the implementation in this way. The processors, memory, and transceivers can be configured individually or integrated into one unit.

[0232] The communication device 100 has the functions of the user terminal device described in the embodiments of this application. For example, the communication device 100 includes modules, units, or means corresponding to the steps involved in the user terminal device described in the embodiments of this application. These functions, units, or means can be implemented by software, hardware, or hardware executing corresponding software, or a combination of software and hardware. Further details can be found in the corresponding descriptions in the foregoing method embodiments. Please refer to the preceding text for specific details. Figure 5 The communication device 50 in the corresponding embodiment.

[0233] Alternatively, the communication device 100 may have the functions of the central office equipment described in the embodiments of this application. For example, the communication device 100 includes modules, units, or means corresponding to the steps involved in the central office equipment described in the embodiments of this application. These functions, units, or means can be implemented by software, hardware, or hardware executing corresponding software, or a combination of software and hardware. Further details can be found in the corresponding descriptions in the foregoing method embodiments. Please refer to the preceding text for specific details. Figure 7 The corresponding embodiment is the communication device 70.

[0234] Alternatively, the communication device 100 may have the functions of the network management device described in the embodiments of this application. For example, the communication device 100 may include modules, units, or means corresponding to the steps involved in the network management device described in the embodiments of this application. These functions, units, or means may be implemented by software, hardware, or hardware executing corresponding software, or a combination of software and hardware. Further details can be found in the corresponding descriptions in the foregoing method embodiments. Please refer to the preceding text for specific details. Figure 9 The corresponding embodiment is the communication device 90.

[0235] Furthermore, this application provides a computer program product comprising one or more computer instructions. When these computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. For example, implementing the aforementioned... Figure 2A , Figure 2B , Figure 3 or Figure 4 Methods related to user-side devices. For example, implementing the methods described above. Figure 2A , Figure 2B , Figure 3 or Figure 4 Methods related to central office equipment. For example, implementing the methods described above. Figure 2A , Figure 2B , Figure 3 or Figure 4 Methods related to network management devices. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can store or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., digital versatile disc (DVD)), or a semiconductor medium (e.g., solid-state disk (SSD)).

[0236] Furthermore, this application also provides a computer-readable storage medium storing a computer program that is executed by a processor to perform the aforementioned functions. Figure 2A , Figure 2B , Figure 3 or Figure 4 Methods related to user-side devices in [the context of the text].

[0237] Furthermore, this application also provides a computer-readable storage medium storing a computer program that is executed by a processor to perform the aforementioned functions. Figure 2A , Figure 2B , Figure 3 or Figure 4 Methods related to central office equipment.

[0238] Furthermore, this application also provides a computer-readable storage medium storing a computer program that is executed by a processor to perform the aforementioned functions. Figure 2A , Figure 2B , Figure 3 or Figure 4 Methods related to network management devices.

[0239] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0240] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An optical signal processing method applied in an optical communication system, the optical communication system comprising a central office device, a splitter device, and user terminal devices, the splitter device comprising a first port and multiple second ports, the central office device being connected to the first port of the splitter device, and the multiple second ports of the splitter device being connected to multiple user terminal devices, characterized in that, include: The central office equipment sends a downlink input optical signal to the first port. The downlink input optical signal includes a first optical signal with a first wavelength and a second optical signal with a second wavelength. After the downlink input optical signal is split by the beam splitter, multiple downlink output optical signals are output through the multiple second ports. Each downlink output optical signal includes the first optical signal and the second optical signal. The optical power of the first optical signal included in the multiple downlink output optical signals is the same, and the optical power of the second optical signal included in the multiple downlink output optical signals is different. The central office equipment receives the optical power of a first optical signal and the optical power of a second optical signal from the user terminal equipment. The optical power of the first optical signal is the optical power of the first optical signal contained in the downlink output optical signal received by the user terminal equipment from the corresponding second port. The optical power of the second optical signal is the optical power of the second optical signal contained in the downlink output optical signal received by the user terminal equipment from the corresponding second port. The central office equipment determines the first indication information of the user terminal equipment based on the optical power of the first optical signal and the optical power of the second optical signal. The first indication information of the user terminal equipment is used to identify the user terminal equipment among the plurality of user terminal equipment.

2. The method according to claim 1, characterized in that, The first indication information is determined based on a first ratio and / or a first difference, wherein the first ratio is the ratio of the optical power of the second optical signal to the optical power of the first optical signal, and the first difference is the difference between the optical power of the second optical signal and the optical power of the first optical signal.

3. The method according to claim 1 or 2, characterized in that, The method further includes: The central office equipment determines the port information of the second port of the optical splitter connected to the user terminal equipment based on the first correspondence and the first indication information of the user terminal equipment. The first correspondence is used to indicate the correspondence between the first indication information of the user terminal equipment and the port information of the second port of the optical splitter.

4. An optical signal processing method applied in an optical communication system, the optical communication system comprising a central office device, a splitter device, and user terminal devices, the splitter device comprising a first port and multiple second ports, the central office device being connected to the first port of the splitter device, and the multiple second ports of the splitter device being connected to multiple user terminal devices, characterized in that, include: The user terminal device receives a downlink output optical signal from the second port of the optical splitter. The downlink output optical signal is determined by the optical splitter based on the downlink input optical signal from the central office device. The downlink output optical signal includes a first optical signal having a first wavelength and a second optical signal having a second wavelength. The user terminal equipment detects the optical power of the first optical signal and the optical power of the second optical signal in the downlink output optical signal; The user terminal device determines first indication information based on the optical power of the first optical signal and the optical power of the second optical signal. The first indication information of the user terminal device is used to identify the user terminal device among the plurality of user terminal devices.

5. The method according to claim 4, characterized in that, The first indication information is determined based on a first ratio and / or a first difference, wherein the first ratio is the ratio of the optical power of the second optical signal to the optical power of the first optical signal, and the first difference is the difference between the optical power of the second optical signal and the optical power of the first optical signal.

6. The method according to claim 4 or 5, characterized in that, The method further includes: The user terminal device sends the first indication information to the central office device; or... The user terminal device sends the optical power of the first optical signal and the optical power of the second optical signal to the central office device.

7. An optical signal processing method applied in an optical communication system, the optical communication system comprising a central office device, a splitter device, and user terminal devices, the splitter device comprising a first port and multiple second ports, the central office device being connected to the first port of the splitter device, and the multiple second ports of the splitter device being connected to multiple user terminal devices, characterized in that, include: The central office equipment receives the uplink output optical signal from the optical splitter and detects the optical power of the third optical signal and the optical power of the fourth optical signal in the uplink output optical signal. The uplink output optical signal is determined by the optical splitter based on the uplink input optical signal from the user terminal equipment. The third optical signal is an optical signal with a third wavelength, and the fourth optical signal is an optical signal with a fourth wavelength. The central office equipment determines the second indication information of the user terminal equipment based on the optical power of the third optical signal and the optical power of the fourth optical signal. The second indication information of the user terminal equipment is used to identify the user terminal equipment among the plurality of user terminal equipment.

8. The method according to claim 7, characterized in that, The optical power of the third optical signal contained in the uplink output optical signal of different user terminal devices is the same, while the optical power of the fourth optical signal contained in the uplink output optical signal of different user terminal devices is different.

9. The method according to claim 7 or 8, characterized in that, The second indication information is determined based on a second ratio and / or a second difference, wherein the second ratio is the ratio of the optical power of the fourth optical signal to the optical power of the third optical signal, and the second difference is the difference between the optical power of the fourth optical signal and the optical power of the third optical signal.

10. The method according to any one of claims 7 to 9, characterized in that, The central office equipment stores a second correspondence relationship, which is used to indicate the correspondence between the second indication information of the user terminal equipment and the port information of the second port of the optical splitting equipment. The method further includes: The central office equipment determines the port information of the second port of the optical splitter connected to the user terminal equipment based on the second correspondence and the second indication information.

11. An optical communication system, characterized in that, include: The system includes central office equipment, optical splitting equipment, and user terminal equipment. The optical splitting equipment includes a first port and multiple second ports. The central office equipment is connected to the first port of the optical splitting equipment, and the multiple second ports of the optical splitting equipment are connected to multiple user terminal equipment. The central office equipment is used to send a downlink input optical signal to the first port, the downlink input optical signal including a first optical signal having a first wavelength and a second optical signal having a second wavelength; The beam splitter is used to split the downlink input optical signal and output multiple downlink output optical signals through the multiple second ports. Each downlink output optical signal includes a first optical signal and a second optical signal. The optical power of the first optical signal included in the multiple downlink output optical signals is the same, and the optical power of the second optical signal included in the multiple downlink output optical signals is different. Each user terminal device is configured to receive the downlink output optical signal from the corresponding second port and detect the optical power of the first optical signal and the optical power of the second optical signal in the downlink output optical signal. The optical power of the first optical signal and the optical power of the second optical signal are used to determine the second port of the optical splitter connected to the user terminal device.

12. The optical communication system according to claim 11, characterized in that, The optical power of the first optical signal and the optical power of the second optical signal are used to determine the first indication information of the user terminal device, and the first indication information of the user terminal device is used to identify the user terminal device among the plurality of user terminal devices.

13. The optical communication system according to claim 12, characterized in that, The first indication information is determined based on a first ratio and / or a first difference, wherein the first ratio is the ratio of the optical power of the second optical signal to the optical power of the first optical signal, and the first difference is the difference between the optical power of the second optical signal and the optical power of the first optical signal.

14. The optical communication system according to claim 12 or 13, characterized in that, The user terminal device is further configured to determine the first indication information of the user terminal device based on the optical power of the first optical signal and the optical power of the second optical signal; and to send the first indication information to the central office device.

15. The optical communication system according to claim 12 or 13, characterized in that, The user terminal equipment is also used to send the optical power of the first optical signal and the optical power of the second optical signal to the central office equipment.

16. The optical communication system according to claim 15, characterized in that, The central office equipment is further configured to determine the first indication information of the user terminal equipment based on the optical power of the first optical signal and the optical power of the second optical signal.

17. The optical communication system according to claim 16, characterized in that, The central office equipment stores a first correspondence relationship, which is used to indicate the correspondence between the first indication information of the user terminal equipment and the port information of the second port of the optical splitter. The central office equipment is further configured to determine the port information of the second port of the optical splitter connected to the user terminal equipment based on the first correspondence and the first indication information of the user terminal equipment.

18. An optical communication system, characterized in that, include: The system includes central office equipment, optical splitting equipment, and user terminal equipment. The optical splitting equipment includes a first port and multiple second ports. The central office equipment is connected to the first port of the optical splitting equipment, and the multiple second ports of the optical splitting equipment are connected to multiple user terminal equipment. Each of the user terminal devices is configured to send an uplink input optical signal to a second port connected to the user terminal device, the uplink input optical signal including a third optical signal having a third wavelength and a fourth optical signal having a fourth wavelength; The optical splitter is used to process the uplink input optical signal received through the second port and output an uplink output optical signal through the first port. The uplink output optical signal includes the third optical signal and the fourth optical signal. The optical power of the third optical signal contained in the uplink output optical signal passing through different second ports is the same, and the optical power of the fourth optical signal contained in the uplink output optical signal passing through different second ports is different. The central office equipment is used to receive the uplink output optical signal corresponding to the user terminal equipment from the optical splitter, and to detect the optical power of the third optical signal and the optical power of the fourth optical signal in the uplink output optical signal. The optical power of the third optical signal and the optical power of the fourth optical signal are used to determine the second port of the optical splitter connected to the user terminal equipment.

19. The optical communication system according to claim 18, characterized in that, The optical power of the third optical signal and the optical power of the fourth optical signal are used to determine the second indication information of the user terminal device, and the second indication information of the user terminal device is used to identify the user terminal device among the plurality of user terminal devices.

20. The optical communication system according to claim 19, characterized in that, The second indication information is determined based on a second ratio and / or a second difference, wherein the second ratio is the ratio of the optical power of the fourth optical signal to the optical power of the third optical signal, and the second difference is the difference between the optical power of the fourth optical signal and the optical power of the third optical signal.

21. The optical communication system according to claim 19 or 20, characterized in that, The central office equipment is also used to determine the second indication information of the user terminal equipment based on the optical power of the third optical signal and the optical power of the fourth optical signal.

22. The optical communication system according to claim 21, characterized in that, The central office equipment stores a second correspondence relationship, which is used to indicate the correspondence between the second indication information of the user terminal equipment and the port information of the second port of the optical splitting equipment. The central office equipment is further configured to determine the port information of the second port of the optical splitter connected to the user terminal equipment based on the second correspondence and the second indication information.

23. A spectrophotometer, characterized in that, include: A first port and multiple second ports, wherein the first port is used to connect to the central office equipment and the second ports are used to connect to the user terminal equipment; Wherein, the first port is used to receive downlink input optical signals, and the second port is used to output downlink output optical signals. The insertion loss of the first optical signal in the downlink input optical signals is the same for all the second ports, and the insertion loss of the second optical signal in the downlink input optical signals is different for each of the multiple second ports. The first optical signal is an optical signal of a first wavelength, and the second optical signal is an optical signal of a second wavelength; or... The second port is used to receive the uplink input optical signal, and the first port is used to output the uplink output optical signal. The insertion loss of the third optical signal in the uplink input optical signal is the same for the plurality of second ports, and the insertion loss of the fourth optical signal in the uplink input optical signal is different for the plurality of second ports. The third optical signal is an optical signal with a third wavelength, and the fourth optical signal is an optical signal with a fourth wavelength.

24. A communication device, characterized in that, include: A processor and a transceiver, the processor being connected to the transceiver, the processor being configured to implement the method as described in any one of claims 1 to 3, or to implement the method as described in any one of claims 7 to 10.

25. A communication device, characterized in that, include: A processor and a transceiver, the processor being connected to the transceiver, the processor being configured to implement the method as described in any one of claims 4 to 6.

26. A chip, characterized in that, The chip is used to perform the method as described in any one of claims 1 to 3; or, to perform the method as described in any one of claims 4 to 6; or, to implement the method as described in any one of claims 7 to 10.

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