Communication device, communication system, and communication method

Abstract

The invention provides a communication device, a communication system and a communication method, which can transmit OAM information in a radio over fiber communication scene. The device comprises a first processing module, a signal branching module and a photoelectric conversion module. Wherein the photoelectric conversion module is used for receiving an optical signal, converting the received optical signal into an electric signal so as to obtain a first signal, and outputting the first signal to the signal branching module. The signal branching module is used for demodulating the first signal to obtain a second signal and sending the second signal to the power supply driving module; the second signal is a low-speed signal, and the second signal is used for indicating the OAM information of the second communication device. The first processing module is used for processing OAM information of the second communication device.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a communication device, communication system and communication method. Background Technology

[0002] In a passive optical network (PON), master and slave devices can transmit operation administration and maintenance (OAM) information via PON protocols, such as Ethernet passive optical network (EPON) and Gigabit-Capable passive optical network (GPON).

[0003] However, in optical wireless communication scenarios, switching, control, and signal regeneration are achieved through the master device, while the slave device (i.e., optical radio frequency communication equipment) performs photoelectric or electro-optical conversion. The slave device lacks the circuitry to support the functions of the transport layer, network layer, data link layer, and physical layer, such as a medium access control (MAC) chip. This prevents the master and slave devices from transmitting OAM information and data over the same optical fiber based on the PON protocol. Therefore, how to transmit OAM information in optical wireless communication scenarios is a pressing issue that needs to be addressed. Summary of the Invention

[0004] This application provides a communication device, communication system, and communication method that can transmit OAM information in the context of optical wireless communication.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] In a first aspect, a first communication device is provided. The first communication device includes: a first processing module, a signal splitting module, and a photoelectric conversion module. The photoelectric conversion module receives an optical signal and converts the received optical signal into an electrical signal to obtain a first signal, and outputs the first signal to the signal splitting module. The signal splitting module demodulates the first signal to obtain a second signal and sends the second signal to a power drive module; the second signal is a low-speed signal and is used to indicate the operation, management, and maintenance (OAM) information of the second communication device. The first processing module processes the OAM information of the second communication device.

[0007] Based on the first communication device provided in the first aspect, the signal splitting module can demodulate the low-speed signal from the electrical signal converted by the photoelectric conversion module, thereby obtaining OAM information. In this way, the reception of OAM information in the optical wireless communication scenario can be realized.

[0008] In one possible implementation, the first processing module supports serial communication. This allows the number of signal transmission channels to match the number of transmission channels in serial communication, reducing implementation complexity.

[0009] In one possible implementation, the first communication device further includes a first detection module, which detects the presence of a second signal and outputs a second signal if the second signal is detected. This allows the output signal to be based on the actual detected signal, reducing energy waste.

[0010] In one possible implementation, the first detection module is used to detect voltage or current levels. This allows for level conversion of different signals, thereby matching the electrical performance of different circuit structures.

[0011] In one possible implementation, the first communication device further includes: a first radio frequency module, which is used to acquire a third signal obtained by demodulating the first signal from the signal splitter module, wherein the third signal is a radio frequency signal.

[0012] Secondly, a third communication device is provided. The third communication device includes: a second processing module, a signal combining module, and an electro-optical conversion module. The second processing module outputs a fourth signal, which is used to indicate the operation, management, and maintenance (OAM) information of the third communication device. The signal combining module acquires the fourth signal and outputs a fifth signal based on at least the fourth signal. The electro-optical conversion module receives the fifth signal and converts it into an optical signal.

[0013] Based on the second communication device provided in the second aspect, the signal combining module can output low-speed signals, such as OAM signals, to the electro-optical conversion module, and then convert them into optical signals before sending them. In this way, OAM information transmission in optical wireless communication scenarios can be realized.

[0014] In one possible implementation, the second processing module supports serial communication. This allows the number of signal transmission channels to match the number of transmission channels in serial communication, reducing implementation complexity.

[0015] In one possible implementation, the third communication device further includes a second detection module, which detects the presence of a fourth signal and outputs the fourth signal if it is present. This allows the output signal to be based on the detected actual signal, reducing energy waste.

[0016] In one possible implementation, the second detection module is used to detect high and low voltage levels. This allows for the output signal to be determined based on the voltage level, thereby improving the accuracy of the output signal.

[0017] In one possible implementation, the third communication device further includes a second radio frequency module, which generates a sixth signal and sends the sixth signal to the signal combining module. The sixth signal is a radio frequency signal.

[0018] Thirdly, a communication system is provided. The communication system includes a first device and a second device; one of the first device and the second device is an optical radio frequency communication device, the first device is used to transmit first operation management and maintenance (OAM) information, and the second device is used to receive the first OAM information.

[0019] Based on the communication system provided in the third aspect, the first device can be used to send the first OAM information, and the second device can be used to receive the first OAM information. Since one of the first device and the second device is an optical radio frequency communication device, the reception of OAM information in the optical wireless communication scenario can be realized.

[0020] In one possible implementation, the communication system further includes a third device for transmitting second OAM information. This second OAM information is transmitted in a time-division multiplexing manner with the first OAM information transmitted by the first device. This avoids OAM information conflicts between different devices when multiple optical radio frequency communication devices are present.

[0021] Fourthly, a communication method is provided, which is applied to a communication device #1, the communication device #1 being connected to a communication device #2, the communication device #2 being an optical radio frequency communication device, the communication method comprising: receiving first information; the first information indicating that the communication device #2 has started operating; and sending second information; the second information indicating that the communication device #1 is capable of providing services to the communication device #2.

[0022] Based on the communication method provided in the fourth aspect, communication device #1 can obtain whether communication device #2 has started operating and can instruct communication device #1 to provide services to communication device #2. In this way, communication device #1 and communication device #2 can obtain the status of the other end, thereby facilitating the establishment of a connection between them.

[0023] In one possible implementation, the formats of the first and second information satisfy the data format of the asynchronous transceiver. This allows communication device #1 and communication device #2 to reuse existing fiber optic links and asynchronous transceiver ports in the processing module to achieve asynchronous transmission.

[0024] In one possible implementation, the number of bits occupied by the first information is less than or equal to a first threshold, and the number of bits occupied by the second information is also less than or equal to the first threshold. This allows communication device #1 and communication device #2 to reuse existing fiber optic links and asynchronous transceiver ports in the processing module to achieve asynchronous transmission and reception.

[0025] In one possible implementation, the method provided by the fourth aspect further includes: receiving third information; the third information is used to indicate the operating status of communication device #1. This allows communication device #1 to promptly obtain the operating status of communication device #2, thereby promptly identifying any abnormalities in the operating status of communication device #2, or any abnormalities in the fiber optic connection between communication device #1 and communication device #2.

[0026] In one possible implementation, the format of the third information satisfies the data format of the asynchronous transceiver.

[0027] In one possible implementation, the number of bits occupied by the third information is less than or equal to the first quantity threshold.

[0028] Fifthly, a communication method is provided, applied to a communication device #2, the communication device #2 being an optical radio frequency communication device, the method comprising: sending first information; the first information indicating that the communication device #2 has started operating; receiving second information; the second information indicating that the communication device #1 is capable of providing services to the communication device #2.

[0029] Based on the communication method provided in the fifth aspect, the communication device #2 can indicate whether the communication device #2 has started operating and can obtain information that the communication device #1 can provide services to the communication device #2. In this way, the communication device #1 and the communication device #2 can obtain the status of the other end, thereby facilitating the establishment of a connection between them.

[0030] In one possible implementation, the method provided by the fifth aspect further includes: sending third information; the third information is used to indicate the working status of the communication device #1.

[0031] Furthermore, the technical effects of the communication method in the fifth aspect can be referenced from the technical effects of the communication method in the fourth aspect, and will not be elaborated here.

[0032] Sixthly, a communication method is provided, applied to a communication device #3, the communication device #3 being connected to multiple communication devices #4, the communication devices #4 being optical radio frequency communication devices. The communication method includes: acquiring fourth information, the fourth information being used to trigger a first operation, the fourth information including an identifier of a target communication device, the target communication device being a communication device performing the first operation, and the target communication device being one of the multiple communication devices #4; and transmitting the fourth information.

[0033] Based on the communication method provided in the sixth aspect, the communication device #3 can acquire and send fourth information to instruct the communication device #4 to perform the first operation, thereby enabling the control, management and maintenance of the communication device #4.

[0034] In one possible implementation, the communication method provided by the sixth aspect may further include: receiving fifth information, the fifth information being used to indicate that the communication device #4 has received the fourth information.

[0035] In one possible implementation, the formats of the fourth and fifth messages satisfy the data format of the asynchronous transceiver.

[0036] In one possible implementation, the number of bits occupied by the fourth information is less than or equal to the second quantity threshold, and the number of bits occupied by the fifth information is less than or equal to the second quantity threshold.

[0037] In one possible implementation, the method provided by the sixth aspect further includes: sending a sixth message; the sixth message is used to instruct the communication device #4 to end the execution of the first operation.

[0038] In one possible implementation, the format of the sixth message satisfies the data format of the asynchronous transceiver.

[0039] In one possible implementation, the number of bits occupied by the sixth information is less than or equal to the second quantity threshold.

[0040] In a seventh aspect, a communication method is provided, applied to a communication device #2, the communication device #2 being an optical radio frequency communication device. The communication method includes: receiving fourth information; the fourth information being used to trigger a first operation, the fourth information including an identifier of the communication device #2; and performing the first operation based on the fourth information.

[0041] In one possible implementation, the method provided in the seventh aspect further includes: sending a fifth message; the fifth message is used to indicate that the communication device #2 has received the fourth message.

[0042] In one possible implementation, the method provided by the seventh aspect further includes: receiving a sixth message; the sixth message is used to instruct the communication device #2 to end the execution of the first operation.

[0043] Furthermore, the technical effects of the communication method in the seventh aspect can be referenced from the technical effects of the communication method in the sixth aspect, and will not be elaborated here.

[0044] Eighthly, a communication apparatus is provided. This communication apparatus is used to perform the communication method described in any one of the implementations of the fourth to seventh aspects.

[0045] In this application, the communication device described in the eighth aspect can be a master device or slave device in an optical wireless communication scenario, or a chip (system) or other component or assembly disposed in the master device or slave device, or a device containing the master device or slave device.

[0046] It should be understood that the communication apparatus described in the eighth aspect includes modules, units, or means that implement the communication methods described in any of the fourth to seventh aspects above. These modules, units, or means can be implemented in hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units for performing the functions involved in the aforementioned communication methods.

[0047] Ninthly, a communication device is provided. The communication device includes a processor configured to execute the communication method described in any of the possible implementations of the fourth to seventh aspects.

[0048] In one possible design, the communication device described in the ninth aspect may further include a transceiver. This transceiver may be a transceiver circuit or an interface circuit. The transceiver can be used for communication between the communication device described in the ninth aspect and other communication devices.

[0049] In one possible design, the communication device described in the ninth aspect may further include a memory. This memory may be integrated with the processor or disposed separately. The memory may be used to store computer programs and / or data relating to the communication method described in any of the fourth to seventh aspects.

[0050] In this application, the communication device described in the ninth aspect can be a master device or slave device in an optical wireless communication scenario, or a chip (system) or other component or assembly disposed in the master device or slave device, or a device containing the master device or slave device.

[0051] A tenth aspect provides a communication device. The communication device includes a processor coupled to a memory, the processor being configured to execute a computer program stored in the memory, such that the communication device performs the communication method described in any of the possible implementations of aspects four through seven.

[0052] In one possible design, the communication device described in the tenth aspect may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver can be used for communication between the communication device described in the tenth aspect and other communication devices.

[0053] In this application, the communication device described in the tenth aspect can be a master device or a slave device in an optical wireless communication scenario, or a chip (system) or other component or assembly disposed in the master device or slave device, or a device containing the master device or slave device.

[0054] Eleventhly, a communication device is provided, comprising: a processor and a memory; the memory is used to store a computer program, which, when executed by the processor, causes the communication device to perform the communication method described in any one of the fourth to seventh aspects.

[0055] In one possible design, the communication device described in the eleventh aspect may further include a transceiver. This transceiver may be a transceiver circuit or an interface circuit. The transceiver can be used for communication between the communication device described in the eleventh aspect and other communication devices.

[0056] In this application, the communication device described in the eleventh aspect can be a master device or a slave device in an optical wireless communication scenario, or a chip (system) or other component or assembly disposed in the master device or slave device, or a device containing the master device or slave device.

[0057] In a twelfth aspect, a communication device is provided, comprising: a processor; the processor being configured to be coupled to a memory, and after reading a computer program from the memory, to execute a communication method as described in any one of the fourth to seventh aspects according to the computer program.

[0058] In one possible design, the communication device described in the twelfth aspect may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver can be used for communication between the communication device described in the twelfth aspect and other communication devices.

[0059] In this application, the communication device described in the twelfth aspect can be a master device or slave device in an optical wireless communication scenario, or a chip (system) or other component or assembly disposed in the master device or slave device, or a device containing the master device or slave device.

[0060] In a thirteenth aspect, a processor is provided. The processor is configured to execute the communication method described in any of the possible implementations of aspects four through seven.

[0061] Fourteenthly, a communication system is provided. The communication system includes one or more master devices and one or more slave devices.

[0062] In a fifteenth aspect, a computer-readable storage medium is provided, comprising: a computer program or instructions; when the computer program or instructions are executed on a computer, causing the computer to perform the communication method described in any one of the possible implementations of the fourth to seventh aspects.

[0063] In a sixteenth aspect, a computer program product is provided, comprising a computer program or instructions that, when executed on a computer, cause the computer to perform the communication method described in any of the possible implementations of aspects four through seven.

[0064] Furthermore, the technical effects of the communication devices described in aspects eight to sixteen above can be referred to the technical effects of the communication methods described in aspects four to seven above, and will not be repeated here. Attached Figure Description

[0065] Figure 1 This is a schematic diagram of the structure of the serial port signal provided in the embodiments of this application;

[0066] Figure 2 A schematic diagram of the connection structure of a device for serial communication;

[0067] Figure 3 This is a schematic diagram of the device connection architecture in an optical network.

[0068] Figure 4 This diagram illustrates the OAM information exchange relationships between devices in an optical network.

[0069] Figure 5 This is a schematic diagram of the EPON protocol architecture;

[0070] Figure 6 A schematic diagram illustrating the information processing flow between the master device and the slave device;

[0071] Figure 7 A schematic diagram of signal transmission in an optical wireless communication scenario;

[0072] Figure 8 This is a schematic diagram of the structure of a first communication device provided in an embodiment of this application;

[0073] Figure 9 This is a schematic diagram of another first communication device provided in an embodiment of this application;

[0074] Figure 10 This is a schematic diagram of another first communication device provided in an embodiment of this application;

[0075] Figure 11 This is a schematic diagram of the structure of a third communication device provided in an embodiment of this application;

[0076] Figure 12 This is a schematic diagram of another third communication device provided in an embodiment of this application;

[0077] Figure 13 This is a schematic diagram of another third communication device provided in an embodiment of this application;

[0078] Figure 14 This is a schematic diagram of the architecture of the communication system provided in the embodiments of this application;

[0079] Figure 15 A schematic diagram of the circuit structure of the master device and slave device provided in the embodiments of this application;

[0080] Figure 16 A flowchart illustrating a communication method provided in an embodiment of this application;

[0081] Figure 17 A flowchart illustrating another communication method provided in an embodiment of this application;

[0082] Figure 18 This is a schematic diagram illustrating the state changes of the circuit structure in the communication method provided in the embodiments of this application;

[0083] Figure 19 Schematic diagram of the communication device provided in the embodiments of this application Figure 1 ;

[0084] Figure 20 Schematic diagram of the communication device provided in the embodiments of this application Figure 2 . Detailed Implementation

[0085] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0086] The technical solutions of this application embodiment can be applied to various communication systems, such as wireless fidelity (WiFi) systems, vehicle-to-everything (V2X) communication systems, device-to-device (D2D) communication systems, vehicle-to-everything (V2X) communication systems, 4th generation (4G) mobile communication systems, such as long term evolution (LTE) systems, worldwide interoperability for microwave access (WiMAX) communication systems, 5th generation (5G) mobile communication systems, such as new radio (NR) systems, and future communication systems, etc.

[0087] This application will present various aspects, embodiments, or features relating to systems that may include multiple devices, components, modules, etc. It should be understood and appreciated that individual systems may include additional devices, components, modules, etc., and / or may not include all the devices, components, modules, etc. discussed in conjunction with the accompanying drawings. Furthermore, combinations of these approaches are also possible.

[0088] In the description of this application, unless otherwise stated, " / " indicates that the objects before and after are in an "or" relationship. For example, A / B can mean A or B. "And / or" in this application is merely a description of the relationship between the related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. A and B can be singular or plural.

[0089] In the description of this application, unless otherwise stated, "multiple" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of a single item or a plurality of items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0090] Furthermore, to facilitate a clear description of the technical solutions in the embodiments of this application, the terms "first" and "second" are used in the embodiments of this application to distinguish identical or similar items with substantially the same function and effect. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and the terms "first" and "second" are not necessarily different.

[0091] It is understood that in the embodiments of this application, words such as "exemplarily" and "for example" are used to indicate that they are examples, illustrations, or descriptions. Any embodiment or implementation described as "exemplary" in this application should not be construed as being more preferred or advantageous than other embodiments or implementations. Specifically, the use of the word "exemplary" is intended to present the concept in a concrete manner.

[0092] It is understood that the term "embodiment" used throughout the specification means that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, various embodiments throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. It is understood that in the various embodiments of this application, the sequence number of each process does not imply the order of execution; the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0093] It is understood that the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0094] It is understood that in this application, "...when" and "if" both refer to the corresponding processing that will be carried out under certain objective circumstances, and are not limited to a specific time, nor do they require a judgment action to be performed during implementation, nor do they imply any other limitations.

[0095] It is understood that some optional features in the embodiments of this application can be implemented independently in certain scenarios without relying on other features, such as the current solution on which they are based, to solve the corresponding technical problems and achieve the corresponding effects. Alternatively, they can be combined with other features as needed in certain scenarios. Correspondingly, the apparatus given in the embodiments of this application can also implement these features or functions, which will not be elaborated here.

[0096] It is understood that in this application, "instruction" can include direct and indirect instructions, as well as explicit and implicit instructions. When describing "a certain instruction information instructs A" or "instruction information of A," it can include whether the instruction information directly or indirectly instructs A, but does not necessarily mean that the instruction information carries A. The information indicated by a certain piece of information is called the information to be instructed. In the specific implementation process, there are many ways to instruct the information to be instructed, such as, but not limited to, directly instructing the information to be instructed, such as the information to be instructed itself or its index. It can also indirectly instruct the information to be instructed by instructing other information, where there is a relationship between the other information and the information to be instructed. It can also instruct only a part of the information to be instructed, while the other parts are known or pre-agreed upon. For example, the instruction of specific information can be achieved by using a pre-agreed (e.g., protocol-defined) arrangement of various information, thereby reducing instruction overhead to some extent. At the same time, the common parts of various information can be identified and uniformly indicated to reduce the instruction overhead caused by individually indicating the same information. Furthermore, the specific instruction method can also be any existing instruction method, such as, but not limited to, the above-mentioned instruction methods and their various combinations. As described above, for example, when multiple pieces of information of the same type need to be indicated, the indication methods for different pieces of information may differ. In specific implementation, the required indication method can be selected according to specific needs. This application embodiment does not limit the selected indication method; therefore, the indication methods involved in this application embodiment should be understood to cover various methods that enable the party to be indicated to obtain the information to be indicated. The information to be indicated can be sent as a whole or divided into multiple sub-information pieces and sent separately. Furthermore, the sending period or timing of these sub-information pieces can be the same or different. This application does not limit the specific sending method. The sending period or timing of these sub-information pieces can be predefined, for example, predefined according to a protocol, or configured by the transmitting device by sending configuration information to the receiving device.

[0097] In this application, "send" and "receive" indicate the direction of signal transmission. For example, "send information to XX" can be understood as the destination of the information being XX, which can include direct transmission via the air interface or indirect transmission via the air interface from other units or modules. "Receive information from YY" can be understood as the source of the information being YY, which can include direct reception from YY via the air interface or indirect reception from YY via the air interface from other units or modules. "Send" can also be understood as the "output" of a chip interface, and "receive" can also be understood as the "input" of a chip interface. In other words, sending and receiving can occur between devices, such as between network devices and terminal devices, or within a device, such as between components, modules, chips, software modules, or hardware modules within the device via buses, traces, or interfaces.

[0098] In this application, unless otherwise specified, the same or similar parts between the various embodiments can be referred to each other. Unless otherwise specified or logically conflicting, the terminology and / or descriptions between different embodiments are consistent and can be mutually referenced. Different embodiments can be combined to form new embodiments based on their inherent logical relationships. The following descriptions of the embodiments of this application do not constitute a limitation on the scope of protection of this application.

[0099] The network architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0100] To facilitate understanding of the embodiments of this application, the related technologies are described below.

[0101] 1. Serial communication calculation.

[0102] Serial communication interfaces can include universal synchronous / asynchronous receiver / transmitter (USART) or universal asynchronous receiver / transmitter (UART). Serial communication interfaces support serial data exchange between microcontrollers and other devices (such as computers, other microcontrollers, sensors, etc.), enabling serial communication. Serial communication transmits data in frame format, with data transmitted frame by frame. Each frame includes a start signal, data information, checksum information, and stop signal. Taking UART as an example, UART can be used to send and receive serial data. The communication standard for UART includes the recommended standard for industrial serial communication (RS232). RS232 is a point-to-point communication standard that can support transmission distances up to 10 meters (m). RS232 is 3-wire full-duplex; it uses two wires to transmit data between devices. Figure 1 As shown, taking electronic devices 1 and 2 as examples, if electronic devices 1 and 2 communicate using RS232, the transmitting end Tx of electronic device 1 is connected to the receiving end Rx of electronic device 2, and the receiving end Rx of electronic device 1 is connected to the transmitting end Tx of electronic device 2. The grounding terminals GND of both electronic devices 1 and 2 are grounded. For UART, the transmitting electronic device can indicate the start of a data packet by adding a start bit (i.e., a start signal) and the end of a data packet by adding a stop bit (i.e., a stop signal). The information between the start and stop bits is the data information. The receiving electronic device can determine the time to read the data packet based on the start and stop bits. For example... Figure 2 As shown, in a UART, a data packet may include one start bit, 5 to 9 data bits (i.e., data information), and one or two stop bits. The first bit after the start bit is the least significant bit (LSB), and the first bit before the stop bit is the most significant bit (MSB). Optionally, the data packet may also include a parity bit (i.e., check information). The parity bit is located between the start bit and the stop bit; for example, the parity bit may be located between the data bits and the stop bit. An electronic device is considered to be in an idle state when it is not transmitting data packets.

[0103] 2. Passive optical network (PON) technology.

[0104] Passive Optical Network (PON) technology uses optical fiber as the communication medium. In a communication system employing PON technology (hereinafter referred to as a PON system), different devices can communicate with each other via optical fiber. A PON system can include one or more of the following network architectures: Fiber to the Curb (FTTC), Fiber to the Building (FTTB), Fiber to the Home (FTTH), Fiber to the Room (FTTR), Fiber to the Office (FTTO), etc.

[0105] like Figure 3 As shown, an FTTR network architecture can include a main FTTR unit (MFU) and sub-FTTR units (SFUs), with the SFUs connected to the MFUs via optical fibers. In this architecture, each MFU can connect to one or more SFUs, meaning there can be a point-to-multipoint architecture between the MFUs and SFUs. In this case, the MFUs and SFUs are connected via optical splitters.

[0106] In an FTTH network architecture, there can be master devices and slave devices. For example, Figure 3 As shown, the master device in an FTTH network architecture can be an optical line terminal (OLT), and the slave device in an FTTH network architecture can be an optical network unit (ONU). Figure 3 (not shown in the image) Optical network termination (ONT) Figure 3 (Not shown in the diagram) or the MFU in an FTTH network architecture. In an FTTH network architecture where the slave device includes an ONU, the OLT is connected to the ONU via optical fiber. In an FTTH network architecture where the slave device includes an ONT, the OLT is connected to the ONT via optical fiber. In an FTTH network architecture where the slave device is an MFU, the OLT can be connected to the MFU via optical fiber. It should be understood that in an FTTH network architecture, there can be one or more master devices, and each master device can connect to one or more slave devices. That is, the master and slave devices can have a point-to-multipoint architecture, in which case the master and slave devices are connected via an optical splitter. The SFU can communicate with user terminals, such as IoT terminals, gateways, set-top boxes, smart TVs, mobile phones, tablets, telephones, network cameras, etc.

[0107] It should be understood that Figure 3 This is a simplified diagram for illustrative purposes only. A PON system may include more or fewer structures. For example, a PON system may also include other OLTs, and / or other MFUs, and / or other SFUs, or it may include ONUs, ONTs, etc. Figure 3 It was not drawn in the middle.

[0108] In a PON system, the master device in an FTTH network architecture and the slave device in an FTTR network architecture can exchange Operation Administration and Maintenance (OAM) information. Similarly, the master device in an FTTH network architecture and the slave device in an FTTR network architecture can exchange OAM information. Furthermore, the MFU (Master Unit) in an FTTR network architecture and the SFU (Slave Unit) in an FTTR network architecture can exchange OAM information. For example, consider a PON system including an OLT (Optical Line Terminal), MFU, and SFU. Figure 4 As shown, OLT and MFU can transmit OAM information to each other, OLT and SFU can transmit OAM information to each other, and MFU and SFU can transmit OAM information to each other.

[0109] In a PON system, master and slave devices can communicate based on the PON transmission protocol. Specifically, a PON system can transmit data in a point-to-multipoint manner using a single-fiber, bidirectional, full-duplex connection. Data between master and slave devices in a PON system is encapsulated in Ethernet frame format; that is, Ethernet frames are transmitted between master and slave devices. The operation, administration, and maintenance (OAM) functions of a PON system can be implemented through a management mechanism that conforms to the PON transmission protocol.

[0110] PON transmission protocols include Ethernet Passive Optical Network (EPON) and Gigabit-Capable Passive Optical Network (GPON). It is understood that PON transmission protocols may also include other protocols, which will not be elaborated upon here.

[0111] Taking EPON as an example, the EPON layered model is derived from the layered model of the Open System Interconnection (OSI) reference model, such as... Figure 5The OSI layered model shown includes, in order, the application layer, presentation layer, session layer, transport layer, network layer, data link layer, and physical layer. The EPON standard includes the Institute of Electrical and Electronics Engineers (IEEE) 802.3ah, which defines the physical and data link layers of EPON. The data link layer includes the MAC client, operation administration and maintenance (OAM) protocol layer, multi-point control protocol (MPCP), MAC layer, and reconciliation sublayer. The EPON physical layer connects to the RS via a gigabit media independent interface (GMII) to transmit data to the MAC layer. The main functions of the physical layer are to encode data into appropriate line codes; perform forward error correction; and complete data transmission and reception through photoelectric and electro-optical conversion. The physical layer of EPON includes the following sublayers: Physical Coding Sublayer (PCS), Forward Error Correction (FEC) (optional), Physical Media Attachment Layer (PMA), and Physical Media Dependent (PMD). For two communicating electronic devices, such as electronic device 1 and electronic device 2, their respective PMDs can connect to a passive optical medium, such as optical fiber, through a medium dependent interface (MDI), thus enabling communication. Both MPCP and OAM protocol layers belong to the data link layer. The GPON standard defines the GPON encapsulation mode (GEM). Frames formed using GEM encapsulation map important key data from the Ethernet frame to the GEM frame payload, and then encapsulate header information. Important key data in the Ethernet frame includes one or more of the following: destination MAC address, source MAC address, type, data, or frame check sequence (FCS).

[0112] The following combination Figure 6 Provide an example illustrating the process of information transmission between the master and slave devices.

[0113] like Figure 6 As shown, assuming the master device sends data and OAM information, it can frame the data and OAM information to obtain Ethernet frames, Common Public Radio Interface (CPRI) frames, or GEM frames. The master device then performs electro-optical conversion to convert the electrical signal of the assembled frame into an optical signal and transmits it. After the optical signal is transmitted through the physical layer to the slave device, the slave device receives the optical signal, performs photoelectric conversion to convert the optical signal back into an electrical signal, and then performs frame parsing to obtain the OAM and data information. The OAM information needs to be processed by the data link layer and physical layer during transmission between the master and slave devices. Therefore, both the master and slave devices require circuit structures, such as MAC chips, to support the modulation and demodulation of data link layer and physical layer protocols.

[0114] 3. Radio over fiber (ROF) technology.

[0115] ROF technology, also known as optical remote radio frequency (ORF) technology or radio frequency optical transmission technology, is a wireless access technology that combines fiber optic communication and wireless communication. For example... Figure 7 As shown, a system employing ROF technology includes a master device (also known as a central station (CS)) and slave devices (i.e., optical radio frequency communication equipment, also known as radio frequency remote unit). The master device can be a baseband unit (BBU) or an optical switch, while the slave device can be a radio remote unit (RRU). The transmitting end of both the master and slave devices can modulate a radio frequency signal (microwave) onto an optical carrier (such as a laser) to obtain a modulated optical signal. The modulated optical signal can then be transmitted via optical fiber to the receiving end. Switching, control, and signal regeneration are implemented by the master device, while the slave devices perform photoelectric conversion or electro-optical conversion. To reduce costs, multiple slave devices can share a single master device.

[0116] In the context of optical wireless communication, the slave device (i.e., radio frequency optical remote device) lacks the circuit structure that can support the functions of the transport layer, network layer, data link layer and physical layer, such as the MAC chip. Therefore, the master device and the slave device cannot transmit OAM information and data information in the same optical fiber based on the protocol, making it difficult to realize the functions of operation, management and maintenance of the slave device.

[0117] To address the aforementioned problems, one embodiment of this application provides a first communication device, comprising: a first processing module, a signal splitting module, and a photoelectric conversion module. The photoelectric conversion module receives an optical signal and converts it into an electrical signal to obtain a first signal; it also outputs the first signal to the signal splitting module. The signal splitting module demodulates the first signal to obtain a second signal and sends the second signal to a power drive module; the second signal is a low-speed signal used to indicate the OAM information of the second communication device. The second processing module processes the first OAM information. Thus, the OAM information can be demodulated from the received signal by the signal splitting module, thereby enabling the transmission of OAM information in a radio frequency optical transmission scenario.

[0118] In another embodiment of this application, a third communication device is provided, comprising a second processing module, a signal combining module, and an electro-optical conversion module. The second processing module outputs a fourth signal indicating the OAM information of a first communication device. The signal combining module acquires the fourth signal and outputs a fifth signal based on at least the fourth signal. The electro-optical conversion module receives the fifth signal and converts it into an optical signal. Thus, the OAM information can be demodulated from the received signal by the signal combining module, thereby enabling the transmission of OAM information in the current radio frequency optical transmission scenario.

[0119] In another embodiment of this application, a communication system is provided, comprising a first device and a second device, wherein the second device is an optical radio frequency communication device; the first device is used to transmit first OAM information, and the second device is used to receive the first OAM information. Thus, OAM information transmission can be achieved in a radio frequency optical transmission scenario.

[0120] The following will combine Figures 8-18 The solutions provided in the embodiments of this application will be described in detail.

[0121] In some embodiments, the communication device may include a circuit structure that supports OAM signal reception, thereby enabling the transmission of OAM signals. The following example illustrates this with reference to a first communication device, which can be either a master device or a slave device in an optical-over-the-air wireless communication scenario.

[0122] For example, Figure 8 This is a schematic diagram of the architecture of the first communication device provided in an embodiment of this application.

[0123] like Figure 8 As shown, the first communication device includes: processing module #1 (i.e., the first processing module), signal splitting module #1, and photoelectric conversion module #1.

[0124] Among them, the photoelectric conversion module #1 is used to receive optical signals and convert the received optical signals into electrical signals to obtain signal #1, i.e., the first signal, and to output signal #1 to the signal splitting module #1.

[0125] In one possible implementation, the photoelectric conversion module #1 is implemented by a photodiode or a photodetector, etc. The specific implementation form of the photoelectric conversion module #1 is not limited in the embodiments of this application.

[0126] In one possible implementation, signal #1 can also be understood as the electrical signal converted from the optical signal received by photoelectric conversion module #1. Signal #1 can be a low-speed signal, a radio frequency (RF) signal, or a superposition of RF and low-speed signals. Optionally, the baud rate of the RF signal is greater than that of the low-speed signal. For example, an RF signal can refer to a signal with a baud rate greater than or equal to 300 kilo bits per second (Kbps) and a baud rate less than or equal to 300 gigabit per second (Gbps). A low-speed signal refers to a signal with a baud rate less than or equal to 115,200 bits per second (bps). It should be understood that the range of baud rates for RF and low-speed signals here is for illustrative purposes only; in actual implementation, the baud rates for RF and low-speed signals may be other ranges. In some scenarios, "greater than or equal to" can be replaced with "greater than" or "equal to," and "less than or equal to" can be replaced with "less than" or "equal to."

[0127] Signal splitter module #1 is used to demodulate signal #1. When signal #1 includes a low-speed signal, signal splitter module #1 demodulates signal #1 to obtain signal #2, i.e., the second signal, and sends signal #2 to processing module #1; signal #2 is a low-speed signal and is used to indicate the OAM information of the second communication device. It can be understood that when signal #1 includes a radio frequency (RF) signal, signal splitter module #1 demodulates signal #1 to obtain signal #3 (i.e., the third signal), and signal #3 is an RF signal. When signal #1 includes both a low-speed signal and an RF signal, signal splitter module #1 demodulates signal #1 to obtain signals #2 and #3.

[0128] Signal splitting module #1 can be implemented using a bias-Tee or a high-speed signal transmission channel built into the optical driver chip. The input signal to the high-speed signal transmission channel can be a differential signal or a single-ended signal. The bias-Tee includes capacitors and inductors, and the optical driver chip can be an integrated optical driver chip.

[0129] Processing module #1 is used to process the OAM information of the second communication device. The OAM information of the second communication device is the OAM information generated by the second communication device.

[0130] In one possible implementation, processing module #1 supports serial communication. That is, processor module #1 can receive and process serial signals, or it can generate serial signals. This allows the number of signal transmission channels to match the number of transmission channels in serial communication, reducing implementation complexity.

[0131] based on Figure 8 The provided first communication device has a signal splitting module that can demodulate a low-speed signal from the electrical signal converted by the photoelectric conversion module, thereby obtaining OAM information. In this way, OAM information can be received in the optical wireless communication scenario.

[0132] like Figure 9 As shown, in one possible implementation, the first communication device further includes a detection module #1, namely the first detection module, which is used to detect whether there is a signal #2, and to generate a signal #2 when the signal #2 is detected.

[0133] In this way, the output signal can be based on the actual detected signal, which can reduce energy waste.

[0134] like Figure 10 As shown, optionally, the detection module #1 includes a detection unit #1, wherein the detection unit #1 is used to detect whether there is a signal #2, and to output a signal #2 when the signal #2 is detected.

[0135] In one possible implementation, detection module #1 is used to detect voltage or current levels. That is, detection module #1 can be used to perform level conversion, thereby outputting a signal that meets the electrical performance requirements of processing module #1. For example, when detection module #1 detects voltage levels, if it detects a voltage greater than or equal to a first voltage threshold, it outputs a high level. Similarly, when detection module #1 detects current levels, if it detects a current greater than or equal to a first current threshold, it outputs a high level. If detection module #1 includes detection unit #1, the detection of voltage or current levels by detection module #1 can be achieved through detection unit #1; that is, detection unit #1 is used to detect voltage or current levels. In this case, the first voltage threshold and the first current threshold can be achieved by inputting the threshold level of detection unit #1. Thus, level conversion of different signals can be achieved, thereby matching the electrical performance in different circuit structures.

[0136] Understandably, in some alternative solutions, "when detection module #1 is used to detect the voltage level, if detection module #1 detects a voltage greater than or equal to the first voltage threshold, then output a high level" can be replaced with "when detection module #1 is used to detect the voltage level, if detection module #1 detects a voltage greater than or equal to the first voltage threshold, then output a low level", and "when detection module #1 is used to detect the current level, if detection module #1 detects a current greater than or equal to the first current threshold, then output a high level" can also be replaced with "when detection module #1 is used to detect the current level, if detection module #1 detects a current greater than or equal to the first current threshold, then output a low level".

[0137] Detection unit #1 can be implemented using a power supply chip; alternatively, detection unit #1 can be implemented using a detector and a comparator. Optionally, the detector and comparator can be discrete. Alternatively, detection unit #1 can be implemented using an optical driver chip or a processor, where the optical driver chip can be an integrated optical driver chip. When detection unit #1 is implemented using a processor, its function can be achieved through the processor's built-in voltage or circuit detection function. Detecting voltage or current can also be understood as detecting power.

[0138] In one possible implementation, as shown in Figure 9, the first communication device further includes: a radio frequency module #1, i.e., a first radio frequency module, which is used to acquire signal #3 obtained from the demodulated signal #1 of the signal splitter module #1. The radio frequency module #1 is a radio frequency receiving module.

[0139] Optionally, such as Figure 9 As shown, the first communication device provided in this application embodiment may further include a circuit structure for supporting OAM information transmission. For example, the first communication device further includes a signal combining module #1 and an electro-optical conversion module #1.

[0140] Processing module #1 is also used to output signal #4. Signal #4 is used to indicate the OAM information of the first communication device. The OAM information of the first communication device is the generated OAM information.

[0141] Signal #4 is a low-speed signal. For details on the implementation of low-speed signals, please refer to the above introduction; further explanation is omitted here. Signal #4 output by processing module #1 can be a level signal.

[0142] Signal combining module #1 is used to acquire signal #4 and output signal #5 based on signal #4.

[0143] For details on the implementation of signal combining module #1, please refer to the relevant introduction of signal combining module #2 in the third communication device below, which will not be elaborated here.

[0144] Optionally, signal combining module #1 can output signal #5 based on signal #4.

[0145] Alternatively, signal combining module #1 can also be used to acquire signal #6, which is a radio frequency (RF) signal. In this case, signal combining module #1 can output signal #5 based on signals #4 and #6. That is, signal #5 is the superposition of signals #4 and #6. Signal #6 is an RF signal; for details on the implementation of RF signals, please refer to the above introduction on RF signals, which will not be elaborated upon here.

[0146] It should be understood that if signal #4 is absent but signal #6 is present, signal combining module #1 can output signal #5 based on signal #6.

[0147] Electro-optical conversion module #1 is used to receive signal #5 and convert signal #5 into an optical signal.

[0148] Optionally, the implementation of electro-optic conversion module #1 can refer to the following introduction about electro-optic conversion module #2, which will not be elaborated here.

[0149] In one possible implementation, the detection module #1 is also used to detect whether there is a signal #4, and to output the signal #4 if the signal #4 is present.

[0150] like Figure 10 As shown, optionally, the detection module #1 further includes a detection unit #2, wherein the detection unit #2 is used to detect whether there is a signal #4, and to output the signal #4 when the signal #4 is present.

[0151] Optionally, the detection module #1 is used to detect high and low voltage levels. In other words, the signal output by the processing module #1 can be used to provide an enable signal for the detection module #1. Optionally, when the signal output by the processing module #1 is high, the detection module #1 outputs a drive current or a drive voltage to enable the electro-optical device to operate. For example, if the detection module #1 outputs a drive current, then when the signal output by the processing module #1 is high, the current of the signal output by the detection module #1 is greater than a second current threshold, thereby enabling the electro-optical conversion module #1 to operate normally; when the signal output by the processing module #1 is low, the detection module #1 does not output a signal or the current of the output signal is less than or equal to the second current threshold. When the current is lower than the second current threshold, the luminous power of the electro-optical conversion module #1 is less than or equal to a first power threshold. For example, if the detection module #1 outputs a driving voltage, then when the signal output by the processing module #1 is high, the voltage of the signal output by the detection module #1 is greater than the second voltage threshold, thus enabling the electro-optical conversion module #1 to operate normally. When the signal output by the processing module #1 is low, the detection module #1 does not output a signal or the voltage of the output signal is less than or equal to the second voltage threshold. When the voltage is lower than the second voltage threshold, the luminous power of the electro-optical conversion module #1 is less than or equal to the first power threshold. If the detection module #1 includes a detection unit #2, the detection module #1 can detect the level of light by using the detection unit #2, i.e., the detection unit #2 is used to detect the level of voltage or current.

[0152] Alternatively, when the signal output by processing module #1 is low, detection module #1 outputs a drive current or a drive voltage to enable the electro-optical device to operate. For example, if detection module #1 outputs a drive current, when the signal output by processing module #1 is low, the current of the signal output by detection module #1 is greater than a second current threshold, thus enabling electro-optical conversion module #1 to operate normally; when the signal output by processing module #1 is high, detection module #1 does not output a signal or the current of the output signal is less than or equal to the second current threshold, and the luminous power of electro-optical conversion module #1 is less than or equal to a first power threshold. Similarly, if detection module #1 outputs a drive voltage, when the signal output by processing module #1 is low, the voltage of the signal output by detection module #1 is greater than a second voltage threshold, thus enabling electro-optical conversion module #1 to operate normally; when the signal output by processing module #1 is high, detection module #1 does not output a signal or the voltage of the output signal is less than or equal to the second voltage threshold, and the luminous power of electro-optical conversion module #1 is less than or equal to the first power threshold.

[0153] "Greater than" can also be replaced with "greater than or equal to", and "less than or equal to" can also be replaced with "less than".

[0154] For details on the implementation of detection unit #2, please refer to the following introduction on detection unit #3, which will not be elaborated here.

[0155] Optionally, the first communication device further includes: a radio frequency module #2, which generates signal #6 and transmits signal #6 to the signal combining module #1. The radio frequency module #2 is a radio frequency transmission module. In some embodiments, the communication device may include a circuit structure for supporting the transmission of OAM information, thereby enabling the transmission of OAM information. The following example illustrates a third communication device, which can be a master device or a slave device in an optical-over-the-air wireless communication scenario.

[0156] For example, Figure 11 A schematic diagram of the architecture of the third communication device provided in the embodiments of this application.

[0157] like Figure 11 As shown, the third communication device includes: processing module #2 (i.e., the second processing module), signal combining module #2, and electro-optical conversion module #2.

[0158] Processing module #2 is used to output signal #7 (i.e., the fourth signal), which is used to indicate the OAM information of the third communication device.

[0159] In one possible implementation, processing module #2 supports serial communication. The implementation of processing module #2 can be found in the description of the first processing module in the first communication device described above, and will not be repeated here. This allows the number of signal transmission channels to match the number of transmission channels in serial communication, reducing implementation complexity.

[0160] Signal #7 is a low-speed signal. For details on the implementation of low-speed signals, please refer to the relevant description in the first communication device section above; it will not be repeated here. Signal #7 output by processing module #2 can be a level signal.

[0161] Signal combining module #2 is used to acquire signal #7 and output signal #8 (i.e., the fifth signal) based on signal #7.

[0162] Optionally, signal combining module #2 can output signal #8 based on signal #7.

[0163] Alternatively, signal combining module #2 can also be used to acquire signal #9 (i.e., the sixth signal), which is a radio frequency (RF) signal. In this case, signal combining module #2 can output signal #8 based on signals #7 and #9. That is, signal #8 is the superposition of signals #7 and #9. Signal #9 is an RF signal; the implementation of RF signals can be found in the relevant description in the first communication device described above, and will not be repeated here.

[0164] It should be understood that if signal #7 is absent but signal #9 is present, signal combining module #2 can output signal #8 based on signal #9.

[0165] Optionally, the signal combining module #2 can achieve high-speed signal transmission through a bias-Tee or the high-speed signal transmission channel built into the optical driver chip. The input signal of the high-speed signal transmission channel can be a differential signal or a single-ended signal. The bias-Tee includes capacitors and inductors, and the optical driver chip can be implemented through an integrated chip, such as a chip that integrates optical driving function and one or more of the following functions: optical driving, signal amplification, signal combining, or signal splitting.

[0166] Electro-optical conversion module #2 is used to receive signal #8 and convert signal #8 into an optical signal.

[0167] Optionally, the electro-optic conversion module #2 may include a laser, such as a directly modulated laser; or, the electro-optic conversion module #2 may include a laser source and an external modulator, wherein the laser source is used to emit a laser signal (i.e., an optical carrier), and the external modulator is used to modulate the radio frequency signal onto the laser signal. The directly modulated laser may be a distributed feedback laser (DFBL) or a vertical cavity surface emitting laser (VCSEL), or other possible lasers, which will not be elaborated further. It is understood that the electro-optic conversion module may also be implemented in other ways besides using a laser, which will not be elaborated further.

[0168] based on Figure 11 The provided third communication device, the signal combining module, can output low-speed signals, such as OAM signals, to the electro-optical conversion module, and then convert them into optical signals before sending them. In this way, OAM information transmission in optical wireless communication scenarios can be realized.

[0169] like Figure 12 As shown, in one possible implementation, the third communication device further includes a detection module #2 (i.e., the second detection module), which is used to detect whether there is a signal #7 and to output the signal #7 when the signal #7 is present.

[0170] In this way, the output signal can be based on the actual detected signal, which can reduce energy waste.

[0171] like Figure 13 As shown, optionally, the detection module #2 includes a detection unit #3, wherein the detection unit #3 is used to detect whether there is a signal #7, and to output a signal #7 when the signal #7 is present.

[0172] In one possible implementation, the detection module #2 is used to detect high and low voltage levels. In other words, the signal output by the processing module #2 can be used to provide an enable signal for the detection module #2. Optionally, when the signal output by the processing module #2 is high, the detection module #2 outputs a drive current or a drive voltage to enable the electro-optical device to operate. For example, if the detection module #2 outputs a drive current, then when the signal output by the processing module #2 is high, the current of the signal output by the detection module #2 is greater than a third current threshold, thereby enabling the electro-optical conversion module #2 to operate normally; when the signal output by the processing module #2 is low, the detection module #2 does not output a signal or the current of the output signal is less than or equal to the third current threshold. When the current is below the third current threshold, the luminous power of the electro-optical conversion module #2 is less than or equal to a second power threshold. For example, if the detection module #2 outputs a driving voltage, then when the signal output by the processing module #2 is high, the voltage of the signal output by the detection module #2 is greater than the third voltage threshold, thus allowing the electro-optical conversion module #2 to operate normally. When the signal output by the processing module #2 is low, the detection module #2 either does not output a signal or the voltage of the output signal is less than or equal to the third voltage threshold. When the voltage is below the third voltage threshold, the luminous power of the electro-optical conversion module #2 is less than or equal to the second power threshold. If the detection module #2 includes a detection unit #3, the detection module #2 can detect the level difference through the detection unit #3, i.e., the detection unit #3 is used to detect the voltage or current level. In this way, a signal can be output based on the level difference, thereby improving the accuracy of the output signal.

[0173] Alternatively, when the signal output by processing module #2 is low, detection module #2 outputs a drive current or a drive voltage to enable the electro-optical device to operate. For example, if detection module #2 outputs a drive current, when the signal output by processing module #2 is low, the current of the signal output by detection module #2 is greater than a third current threshold, thus enabling electro-optical conversion module #2 to operate normally; when the signal output by processing module #2 is high, detection module #2 does not output a signal or the current of the output signal is less than or equal to the third current threshold. If the current is below the third current threshold, the luminous power of electro-optical conversion module #2 is less than or equal to a second power threshold. As another example, if detection module #2 outputs a drive voltage, when the signal output by processing module #2 is low, the voltage of the signal output by detection module #2 is greater than a third voltage threshold, thus enabling electro-optical conversion module #2 to operate normally; when the signal output by processing module #2 is high, detection module #2 does not output a signal or the voltage of the output signal is less than or equal to the third voltage threshold. If the voltage is below the third voltage threshold, the luminous power of electro-optical conversion module #2 is less than or equal to a second power threshold. When the detection module #2 includes the detection unit #3, the detection module #2 can detect the level high or low through the detection unit #3, that is, the detection unit #3 is used to detect the voltage or current high or low.

[0174] "Greater than" can also be replaced with "greater than or equal to", and "less than or equal to" can also be replaced with "less than".

[0175] Alternatively, the detection unit #3 can be implemented using a current source chip, a voltage source chip, or a light driver chip. The light driver chip can be an integrated light driver chip.

[0176] In one possible implementation, as shown in Figure 12, the third communication device further includes: a radio frequency module #3 (i.e., a second radio frequency module), which generates signal #9 and transmits signal #9 to the signal combining module #2. Radio frequency module #3 is a radio frequency transmission module.

[0177] like Figure 12 As shown, the third communication device may optionally include a circuit structure for supporting OAM information reception. For example, the third communication device may also include a signal splitting module #2 and a photoelectric conversion module #2.

[0178] Among them, the photoelectric conversion module #2 is used to receive optical signals, convert the received optical signals into electrical signals to obtain signal #10, and output signal #10 to the signal splitting module #2.

[0179] In one possible implementation, the photoelectric conversion module #2 is implemented by a photodiode or a photodetector, etc. The specific implementation form of the photoelectric conversion module #2 is not limited in the embodiments of this application.

[0180] In one possible implementation, signal #10 can also be understood as the electrical signal converted from the optical signal received by photoelectric conversion module #2. Signal #10 can be a low-speed signal, a radio frequency signal, or a signal resulting from the superposition of a radio frequency signal and a low-speed signal. For details on the implementation of signal #10, please refer to the relevant description of information #1 in the first communication device; further details will not be provided here.

[0181] Signal splitter module #2 is used to demodulate signal #10. When signal #10 includes a low-speed signal, signal splitter module #2 demodulates signal #10 to obtain signal #11 and sends signal #11 to the power drive module; signal #11 is a low-speed signal and is used to indicate the OAM information of the fourth communication device. When signal #10 includes a radio frequency (RF) signal, signal splitter module #2 demodulates signal #10 to obtain signal #12; signal #11 is an RF signal. When signal #10 includes both a low-speed signal and an RF signal, signal splitter module #2 demodulates signal #10 to obtain signals #11 and #12.

[0182] The implementation of signal splitting module #2 can be found in the above introduction of signal splitting module #1, and will not be repeated here.

[0183] Processing module #2 is used to process the OAM information of the fourth communication device. The OAM information of the fourth communication device is either OAM information from the fourth communication device itself or OAM information generated by the fourth communication device.

[0184] In one possible implementation, the detection module #2 is also used to detect whether there is a signal #11, and to output the signal #11 when the signal #11 is detected.

[0185] like Figure 13 As shown, optionally, the detection module #2 further includes a detection unit #4, wherein the detection unit #4 is used to detect whether there is a signal #11, and to output a signal #11 when the signal #11 is detected.

[0186] In one possible implementation, detection module #2 is used to detect voltage or current levels. That is, detection module #2 can be used to perform level conversion, thereby outputting a signal that meets the electrical performance requirements of processing module #2. For example, when detection module #2 is used to detect voltage levels, if it detects a voltage greater than or equal to a fourth voltage threshold, it outputs a high level. Similarly, when detection module #4 is used to detect current levels, if it detects a current greater than or equal to a fourth current threshold, it outputs a high level. When detection module #2 includes detection unit #4, the detection of voltage or current levels by detection module #2 is achieved through detection unit #4; that is, detection unit #4 is used to detect voltage or current levels.

[0187] The implementation of detection unit #4 can be found in the relevant introduction of detection unit #1, and the implementation of detection module #2 can be found in the relevant introduction of detection module #1 in the first communication device. It will not be elaborated here.

[0188] In one possible implementation, the third communication device further includes: a radio frequency module #4, which is used to acquire signal #12 obtained from the demodulated signal #10 of the signal splitter module #2. The radio frequency module #4 is a radio frequency receiving module.

[0189] In other embodiments, a communication system is also provided, which includes a master device and a slave device in an optical-over-the-air wireless communication scenario. The following is in conjunction with... Figure 14 Explanation. For example, Figure 14 This is a schematic diagram of the architecture of the communication system provided in an embodiment of this application.

[0190] The communication system includes a first device and a second device. One of the first and second devices is an optical radio frequency communication device. The first device is used to transmit first OAM information, and the second device is used to receive the first OAM information.

[0191] The first and second devices are electronic devices.

[0192] Optionally, the first device is a master device in the optical-over-the-air wireless communication scenario, and the second device is a slave device in the optical-over-the-air wireless communication scenario. In this case, the second device is an optical-over-the-air radio frequency communication device. Alternatively, the first device is a slave device in the optical-over-the-air wireless communication scenario, and the second device is a master device in the optical-over-the-air wireless communication scenario. In this case, the first device is an optical-over-the-air radio frequency communication device.

[0193] Optionally, in this embodiment, the first device may include the structure of the first communication device described above. The implementation of the first device can be found in the aforementioned description of the first communication device. The second device may include the structure of the third communication device described above. The implementation of the second device can be found in the aforementioned description of the third communication device, and will not be repeated here.

[0194] based on Figure 14 The provided communication system allows a first device to transmit first OAM information and a second device to receive first OAM information. Since one of the first and second devices is an optical radio frequency communication device, the reception of OAM information in an optical wireless communication scenario can be realized.

[0195] In one possible implementation, the communication system also includes a third device. This third device is a slave device in an optical wireless communication scenario.

[0196] Optionally, when the first device is a slave device, the third device is used to send the second OAM information, and the second OAM information of the third device is sent in a time-division manner with the first OAM information of the first device. In this case, the third device may include the structure of the second communication device described above, which will not be elaborated further.

[0197] Alternatively, in the case where the first device is the master device and the second device is the slave device, the first device is also used to transmit third OAM information, which is transmitted in time-division multiplexing with the first OAM information. This avoids OAM information conflicts between different devices when multiple optical radio frequency communication devices exist. In this case, the third device may include the structure of the first communication device described above.

[0198] The third device is a slave device in an optical wireless communication scenario.

[0199] In a scenario where the first device is the master device, the communication system may also include a fourth device. The first device is also used to transmit third OAM information. The fourth device is used to receive the third OAM information, and the third OAM information of the fourth device is transmitted in a time-division multiplexing manner with the first OAM information of the first device. The fourth device is a slave device in an optical wireless communication scenario. In this way, OAM information conflicts between different devices can be avoided when multiple optical radio frequency communication devices exist.

[0200] In optical wireless communication scenarios, the master device may include the aforementioned first communication device, and the slave device may include the aforementioned third communication device. The following examples, using specific circuit structures, illustrate the time delay between the first and third communication devices provided in this application embodiment. Figure 15 The architecture shown is an example.

[0201] like Figure 15As shown, the circuit structure includes circuit board 1, circuit board 2, and a universal serial bus (USB) to transistor-transistor logic circuit (TTL) serial converter integrated circuit (IC). The USB-to-TTL serial converter IC can be an FT232; the following example uses the FT232. The FT232 can be connected to a processor to convert the processor's output signals into serial port signals, or to convert serial port signals into signals that meet the processor's input signal requirements before transmitting them to the processor. The FT232 and the processor together constitute the processing module in the first communication device. In this embodiment, the processor can be a system-on-chip (SoC), a field-programmable gate array (FPGA), or a microcontroller unit (MCU), or other possible processors, which will not be elaborated further. This processor can be located in a computer host or other devices with signal processing capabilities.

[0202] The circuit board No. 1 includes photodiode 1 (i.e., photoelectric conversion module #1), which is coupled to an optical fiber. The first pin of photodiode 1 is connected to the first pin of capacitor C1 and the first pin of inductor L1. The second pin of capacitor C1 is the RF signal output pin RF_OUT, used to output RF signals (e.g., connected to RF module #1). The second pin of inductor L1 is grounded. The second pin of photodiode 1 is connected to the comparator positive input pin COMP_P of the optical communication transceiver (also called an optical communication transceiver chip or optical PHY, i.e., in the first communication device) 1 (i.e., detection unit #1) in MCU1 and the first pin of resistor R1. The second pin of resistor R1 is connected to the first voltage source. The comparator output pin COMP_OUT of optical PHY1 in MCU1 is connected to the serial signal input pin UART_Rx of FT232. Furthermore, the power supply pin of MCU1 is connected to the second voltage source. The output voltage of the first voltage source is higher than the output voltage of the second voltage source. For example, the output voltage of the first voltage source can be 3.3 volts (+3V3), and the output voltage of the second voltage source can be 3.2V (+3V2).

[0203] The serial signal output pin UART_Tx of the FT232 is connected to the burst enable pin BENP of the optical PHY2 (i.e., detection unit #2). The bias current output pin BISAP of the optical PHY2 is connected to the first pin of laser 1, which is coupled to the optical fiber. The second pin of the laser is connected to the first pin of inductor L2 and the first voltage source, respectively. The second pin of laser 1 is also connected to the first pin of capacitor C2. The second pin of capacitor C2 is the RF signal input pin, RF_IN, used to input RF signals (for example, the second pin of capacitor C2 is connected to RF module #2).

[0204] In circuit board #1, L1 and C1 are equivalent to signal splitting module #1, and L2 and C2 are equivalent to signal combining module #1. The circuit board #1, FT232, and processor together are equivalent to the first communication device.

[0205] In board #2, the serial signal output pin UART_Tx of MCU2 is connected to the burst enable pin BENP of optical PHY3. The bias current output pin BISAP of optical PHY3 (equivalent to detection unit #3 in the third communication device) is connected to the first pin of laser 2 (electro-optic conversion module #2). Laser 2 is coupled to the optical fiber. The second pin of the laser is connected to inductor L3 and the third voltage source, respectively. The second pin of laser 2 is also connected to the first pin of capacitor C3. The second pin of capacitor C3 is the RF signal input pin RF_IN, used to input RF signals (for example, the second pin of capacitor C2 is connected to RF module #3).

[0206] Photodiode 2 (i.e., photoelectric conversion module #2) is coupled to an optical fiber. The first pin of photodiode 2 is connected to the first pin of capacitor C4 and the first pin of inductor L4, respectively. The second pin of capacitor C4 is the RF signal output pin RF_OUT, used to output RF signals (e.g., connected to RF module #4); the second pin of inductor L4 is grounded. The second pin of photodiode 2 is connected to the positive input pin COMP_P of the comparator in optical PHY4 of MCU2 and the first pin of resistor R3. The second pin of resistor R3 is connected to the fourth voltage source. The comparator output pin COMP_OUT of optical PHY4 in MCU2 is connected to the serial signal input pin UART_Rx of MCU2. Furthermore, the power supply pin of MCU2 is connected to the fourth voltage source. The output voltage of the third voltage source is higher than the output voltage of the fourth voltage source. For example, the output voltage of the third voltage source can be 3.3V (+3V3), and the output voltage of the fourth voltage source can be 3.2V (+3V2).

[0207] In circuit board #2, L3 and C3 are equivalent to signal splitting module #2, and L4 and C4 are equivalent to signal combining module #2. The circuit board #2 is equivalent to the third communication device mentioned above.

[0208] The processor loads the serial port signal to be transmitted onto the optical carrier through the signal combiner #1 on the first communication device, and extracts the serial port signal transmitted back from the third communication device through the signal splitter #1. The first and third communication devices are connected by a 100m optical fiber. Similarly, the MCU2 of the third communication device also extracts the serial port signal through the signal splitter #2 and transmits the serial port signal through the signal combiner #2, completing the signal interaction with the first communication device. In this case, the signal sent by the first communication device reaches the third communication device after being connected by optical fiber with a delay of about 600 nanoseconds (ns), which meets the latency requirements of serial port transmission. Therefore, the solution of this embodiment can support serial communication and interaction between devices in optical wireless communication scenarios.

[0209] The delay introduced by photoelectric conversion and fiber optic cable extension is approximately 600ns, which meets the latency requirements for serial port transmission. Therefore, this implementation method can support serial communication and interaction between devices with long-distance fiber optic cable extension.

[0210] In some embodiments, a communication method is provided that can be used between a master device and a slave device in an optical wireless communication scenario to realize the online function in the optical wireless communication scenario. It is understood that the master device and the slave device are connected, and the slave device is an optical radio frequency communication device. For ease of understanding, the following example illustrates the communication method provided in this application embodiment, with the master device being communication device #1 and the slave device being communication device #2. Exemplarily, Figure 16 Flowchart of the communication method provided in the embodiments of this application Figure 1 .

[0211] like Figure 16 As shown, the communication method includes the following steps:

[0212] S1601, communication device #2 sends the first information. Correspondingly, communication device #1 receives the first information.

[0213] The first message indicates that communication device #2 has started operating.

[0214] Among them, communication device #2 can be a slave device, and communication device #1 can be a master device.

[0215] S1602, communication device #1 sends the second information. Correspondingly, communication device #2 receives the second information.

[0216] The second piece of information is used to indicate that communication device #1 can provide services to communication device #2.

[0217] In one possible implementation, the formats of the first and second information conform to the data format of the asynchronous transceiver. That is, communication device #1 and communication device #2 transmit the first and second information using an asynchronous transceiver in serial communication.

[0218] In this way, communication device #1 and communication device #2 can reuse the existing fiber optic links and asynchronous transceiver ports in the processing module to achieve asynchronous transmission and reception.

[0219] based on Figure 16 The provided communication method allows communication device #1 to determine whether communication device #2 has started operating and to instruct communication device #1 to provide services to communication device #2. This enables communication device #1 and communication device #2 to obtain the status of the other end, thereby facilitating the establishment of a connection between them.

[0220] In one possible implementation, the number of bits occupied by the first information is less than or equal to a first threshold, and the number of bits occupied by the second information is also less than or equal to the first threshold. The first threshold is determined based on the number of bits that the data information in the data packet transmitted by the asynchronous transceiver can occupy. For example, if the data information in the data packet can occupy 9 bits, then the first threshold is 9. Regarding the data format of the asynchronous transceiver, please refer to the relevant introduction in serial communication above, which will not be elaborated upon here.

[0221] In this way, communication device #1 and communication device #2 can reuse the existing fiber optic links and asynchronous transceiver ports in the processing module to achieve asynchronous transmission and reception.

[0222] In one possible implementation, Figure 16 The provided method also includes S1603.

[0223] S1603, communication device #2 sends third information. Correspondingly, communication device #1 receives the third information.

[0224] The third information is used to indicate the operating status of communication device #1. The format of the third information conforms to the data format of the asynchronous transceiver. For example, the number of bits occupied by the third information is less than or equal to the first quantity threshold.

[0225] The second message can also be called a heartbeat request, and the third message can also be called a heartbeat response.

[0226] It is understood that the first, second, and third pieces of information mentioned above are OAM information.

[0227] In this way, communication device #1 can obtain the working status of communication device #2 in a timely manner, thereby promptly identifying abnormalities in the working status of communication device #2, or abnormalities in the optical fiber connection between communication device #1 and communication device #2.

[0228] In some embodiments, a communication method is provided that can be used between a master device and a slave device in an optical wireless communication scenario to realize online detection functionality in the optical wireless communication scenario. It is understood that the master device and the slave device are connected, and the slave device is an optical radio frequency communication device. For ease of understanding, the following example illustrates the communication method provided in this application embodiment, with the master device being a communication device #3 and the slave device being a communication device #4. For example, Figure 17 Flowchart of the communication method provided in the embodiments of this application Figure 2 .

[0229] like Figure 17 As shown, the communication method includes the following steps:

[0230] S1701, Communication device #3 generates fourth information.

[0231] The fourth information is used to trigger the first operation. The fourth information includes the identifier of the target communication device, which is the communication device that performs the first operation, and the target communication device is one of the multiple communication devices #4.

[0232] Among them, communication device #3 can be a slave device, and communication device #4 can be a master device.

[0233] S1702, Communication device #3 sends the fourth message.

[0234] S1703, Communication device #4 receives the fourth message.

[0235] based on Figure 17 The provided communication method allows communication device #3 to acquire and send fourth information to instruct communication device #4 to perform the first operation, thereby enabling the control, management, and maintenance of communication device #4.

[0236] S1704, communication device #4 sends the fifth message. Correspondingly, communication device #3 receives the fifth message.

[0237] The fifth message is used to indicate that communication device #4 has received the fourth message.

[0238] In one possible implementation, the formats of the fourth and fifth messages conform to the data format of the asynchronous transceiver. That is, communication device #3 and communication device #4 transmit the fourth and fifth messages using an asynchronous transceiver in serial communication.

[0239] In one possible implementation, the number of bits occupied by the fourth information is less than or equal to the second quantity threshold, and the number of bits occupied by the fifth information is less than or equal to the second quantity threshold.

[0240] In one possible implementation, Figure 17 The provided method also includes S1705.

[0241] S1705, communication device #3 sends the sixth message. Correspondingly, communication device #4 receives the sixth message.

[0242] The sixth message is used to instruct communication device #4 to end the execution of the first operation.

[0243] Optionally, the format of the sixth message satisfies the data format of the asynchronous transceiver.

[0244] Optionally, the number of bits occupied by the sixth information is less than or equal to the second quantity threshold.

[0245] Understandably, this is true when the device also includes communication device #5. Figure 17 The provided method may also include S1706 and S1707.

[0246] S1706, Communication device #5 receives the fourth message.

[0247] The fourth message can also be called the heartbeat command.

[0248] S1707, communication device #5 determines that the fourth information does not include the identifier of communication device #5, and stops emitting light. At this point, it can be understood that the fourth information is not information from communication device #5; therefore, communication device #5 can stop emitting light or reduce its optical power. In other words, if the heartbeat command received by communication device #5 is not its own heartbeat command, then communication device #5 can stop communication.

[0249] It is understandable that the fourth, fifth, and sixth pieces of information mentioned above are OAM information.

[0250] The following description, in conjunction with the working states of different devices during signal transmission in the embodiments of this application, illustrates these points.

[0251] like Figure 18As shown, assuming the master device is the first communication device and the slave device is the second communication device, when the master device sends information to the slave device, in the first communication device, when the processing module #1 outputs a high level, it can pull up the enable pin of the detection unit #2. At this time, the electro-optical conversion module #2 works normally and emits an optical signal. The optical signal can be transmitted through optical fiber and received by the photoelectric conversion module #4 of the second communication device, and converted into an electrical signal. The detection unit #4 of the second communication device detects that the electrical signal converted by the photoelectric conversion module #4 is greater than the fourth voltage threshold (or the fourth current threshold), and outputs a high level to the processing module #2.

[0252] In the first communication device, when the processing module #1 outputs a low level, it can pull down the enable pin of the detection unit #2. At this time, the electro-optical conversion module #2 does not emit light, and the optical signal converted from the radio frequency signal can be transmitted through the optical fiber, thereby being received by the photoelectric conversion module #4 of the second communication device and converted into an electrical signal. The detection unit #4 of the second communication device detects that the electrical signal converted by the photoelectric conversion module #4 is less than the fourth voltage threshold (or the fourth current threshold), and outputs a low level to the processing module #2.

[0253] The above combination Figures 9-18 The communication method provided in the embodiments of this application is described in detail below. Figures 19-20 This document describes in detail the communication apparatus used to perform the communication method provided in the embodiments of this application.

[0254] like Figure 19 As shown, the communication device 1900 includes a processing module 1901 and a transceiver module 1902. For ease of explanation, Figure 19 Only the main components of the communication device are shown.

[0255] In some embodiments, communication device 1900 can be used to implement the functions of communication device #1. Processing module 1901 in communication device 1900 can be used to generate the above-mentioned... Figure 16 In the provided method, the signal sent by communication device #1 can be used by transceiver module 1902 to perform the above-mentioned function. Figure 16 The method provided includes the receiving and transmitting steps of communication device #1.

[0256] In other embodiments, communication device 1900 can be used to implement the functions of communication device #2. The processing module 1901 in communication device 1900 can be used to generate the above-mentioned... Figure 16 In the provided method, the signal sent by communication device #2 can be used by transceiver module 1902 to perform the above-mentioned function. Figure 16 The method provided includes the receiving and transmitting steps of communication device #2.

[0257] In other embodiments, communication device 1900 can be used to implement the functions of communication device #3. The processing module 1901 in communication device 1900 can be used to generate the above-mentioned... Figure 17 In the provided method, the signal sent by communication device #3 can be used by transceiver module 1902 to perform the above. Figure 17 The method provided includes the receiving and transmitting steps of communication device #3.

[0258] In other embodiments, communication device 1900 can be used to implement the functions of communication device #3. The processing module 1901 in communication device 1900 can be used to generate the above-mentioned... Figure 17 The signal sent by communication device #4 in the provided method can be used by transceiver module 1902 to perform the above. Figure 17 The method provided includes the receiving and transmitting steps of communication device #4.

[0259] In other embodiments, communication device 1900 can be used to implement the functions of communication device #3. The processing module 1901 in communication device 1900 can be used to generate the above-mentioned... Figure 17 The signal sent by communication device #4 in the provided method can be used by transceiver module 1902 to perform the above. Figure 17 The method provided includes the receiving and transmitting steps of communication device #4.

[0260] Optionally, the transceiver module 1902 may include a receiving module and a transmitting module. Figure 19 (Not shown in the image). The transceiver module is used to implement the sending and receiving functions of the communication device 1900.

[0261] Optionally, the communication device 1900 may also include a storage module. Figure 19 (Not shown in the image), this storage module stores programs or instructions. When the processing module 1901 executes the program or instructions, it enables the communication device 1900 to perform operations. Figure 16 The function of communication device #1 or communication device #2 in the communication method shown is or Figure 17 The function of communication device #3, communication device #4 or communication device #5 in the communication method shown.

[0262] It should be understood that the processing module 1901 involved in the communication device 1900 can be implemented by a processor or processor-related circuit components, and can be a processor or processing unit; the transceiver module 1902 can be implemented by a transceiver or transceiver-related circuit components, and can be a transceiver or transceiver unit.

[0263] It should be noted that the communication device 1900 can be a master device, a communication module, a circuit or chip responsible for communication functions, a chip system, or other components or assemblies. The communication module, circuit or chip responsible for communication functions, chip system, or other components or assemblies can be located in the master device. Alternatively, the communication device 1900 can be a slave device, a communication module, a circuit or chip responsible for communication functions, chip system, or other components or assemblies. The communication module, circuit or chip responsible for communication functions, chip system, or other components or assemblies can be located in the slave device.

[0264] In addition, the technical effects of the communication device 1900 can be referenced. Figure 16 or Figure 17 The technical effects of any of the communication methods shown in the examples are not elaborated here.

[0265] For example, Figure 20 Schematic diagram of the communication device provided in the embodiments of this application Figure 2 The communication device can be a main device or an access network device, or it can be a chip (system) or other component or assembly that can be installed in the main device or access network device. For example... Figure 20 As shown, the communication device 2000 may include a processor 2001. Optionally, the communication device 2000 may also include a memory 2002 and / or a transceiver 2003. The processor 2001 is coupled to the memory 2002 and the transceiver 2003, for example, they may be connected via a communication bus.

[0266] The following is combined Figure 20 A detailed description of each component of the communication device 2000 is provided below:

[0267] The processor 2001 is the control center of the communication device 2000. It can be a single processor or a collective term for multiple processing elements. For example, the processor 2001 can be one or more central processing units (CPUs), application-specific integrated circuits (ASICs), or one or more integrated circuits configured to implement the embodiments of this application, such as one or more digital signal processors (DSPs), or one or more field-programmable gate arrays (FPGAs).

[0268] Optionally, the processor 2001 can perform various functions of the communication device 2000 by running or executing software programs stored in the memory 2002 and calling data stored in the memory 2002.

[0269] In a specific implementation, as one example, the processor 2001 may include one or more CPUs, for example... Figure 20 CPU0 and CPU1 are shown in the diagram.

[0270] In a specific implementation, as one example, the communication device 2000 may also include multiple processors, for example... Figure 20 The processors 2001 and 2004 are shown. Each of these processors can be a single-core processor or a multi-core processor. Here, "processor" can refer to one or more devices, circuits, and / or processing cores used to process data (e.g., computer program instructions).

[0271] The memory 2002 is used to store the software program that executes the solution of this application, and is controlled by the processor 2001 to execute it. The specific implementation method can be referred to the above method embodiment, and will not be repeated here.

[0272] Optionally, the memory 2002 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto. The memory 2002 may be integrated with the processor 2001 or exist independently, and may be connected via the interface circuit of the communication device 2000. Figure 20 (Not shown in the image) is coupled to the processor 2001, and this embodiment does not specifically limit this.

[0273] Alternatively, the memory may be located outside the communication device.

[0274] Transceiver 2003 is used for communication with other communication devices. For example, communication device 2000 is the master device, and transceiver 2003 can be used to communicate with slave devices or with terminal devices.

[0275] Alternatively, transceiver 2003 may include a receiver and a transmitter. Figure 20 (Not shown separately). The receiver is used to implement the receiving function, and the transmitter is used to implement the sending function.

[0276] Optionally, the transceiver 2003 can be integrated with the processor 2001, or it can exist independently and be connected via the interface circuit of the communication device 2000. Figure 20 (Not shown in the image) is coupled to the processor 2001, and this embodiment does not specifically limit this.

[0277] It should be noted that, Figure 20 The structure of the communication device 2000 shown in the figure does not constitute a limitation on the communication device. Actual communication devices may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0278] Furthermore, the technical effects of the communication device 2000 can be referenced from the technical effects of the channel state information reporting method described in the above method embodiments, and will not be repeated here.

[0279] It should be understood that the processor in the embodiments of this application can be a CPU, but it can also be other general-purpose processors, DSPs, ASICs, FPGAs, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor, etc.

[0280] It should also be understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Non-volatile memory can be ROM, programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), EEPROM, or flash memory. Volatile memory can be RAM, which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0281] The above embodiments can be implemented, in whole or in part, by software, hardware (such as circuits), firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. 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., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more sets of available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. A semiconductor medium can be a solid-state drive.

[0282] 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. A and B can be singular or plural. Additionally, the character " / " in this article generally indicates an "or" relationship between the preceding and following related objects, but it can also represent an "and / or" relationship. Please refer to the context for a more accurate understanding.

[0283] In this application, "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or multiple items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0284] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0285] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0286] Those skilled in the art will 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.

[0287] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0288] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0289] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0290] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0291] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A first communication device, characterized in that, The device includes: a first processing module, a signal splitting module, and a photoelectric conversion module; The photoelectric conversion module is used to receive optical signals, convert the received optical signals into electrical signals to obtain a first signal, and output the first signal to the signal splitting module. The signal splitter module is used to demodulate the first signal to obtain the second signal and send the second signal to the power drive module; the second signal is a low-speed signal and is used to indicate the operation, management and maintenance (OAM) information of the second communication device. The first processing module is used to process the OAM information of the second communication device.

2. The apparatus according to claim 1, characterized in that, The first processing module supports serial communication.

3. The apparatus according to claim 2, characterized in that, The first communication device further includes a first detection module, which is used to detect whether the second signal is present, and to output the second signal when the second signal is detected.

4. The apparatus according to claim 3, characterized in that, The first detection module is used to detect the voltage or current level.

5. The apparatus according to any one of claims 1-4, characterized in that, The device further includes: a first radio frequency module, which is used to acquire a third signal obtained by demodulating the first signal from the signal splitting module, wherein the third signal is a radio frequency signal.

6. A third communication device, characterized in that, The device includes: a second processing module, a signal combining module, and an electro-optical conversion module; The second processing module is used to output a fourth signal, which is used to instruct the third communication device on operation, management, and maintenance (OAM) information. The signal combining module is used to acquire the fourth signal and output a fifth signal based on at least the fourth signal; The electro-optic conversion module is used to receive the fifth signal and convert the fifth signal into an optical signal.

7. The apparatus according to claim 6, characterized in that, The second processing module supports serial communication.

8. The apparatus according to claim 7, characterized in that, The third communication device further includes a second detection module, which is used to detect whether the fourth signal is present, and to output the fourth signal if the fourth signal is present.

9. The apparatus according to claim 7, characterized in that, The second detection module is used to detect high and low voltage levels.

10. The apparatus according to any one of claims 6-9, characterized in that, The device further includes: a second radio frequency module, which generates a sixth signal and sends the sixth signal to the signal combining module; wherein the sixth signal is a radio frequency signal.

11. A communication system, characterized in that, The communication system includes a first device and a second device, wherein one of the first device and the second device is an optical radio frequency communication device; The first device is used to send first Operation Management and Maintenance (OAM) information, and the second device is used to receive the first OAM information.

12. The system according to claim 11, characterized in that, The communication system also includes a third device, which is used to send second OAM information. The second OAM information of the third device is sent in time-division multiplexed with the first OAM information of the first device.

13. A communication method, characterized in that, The method is applied to communication device #1, which is connected to communication device #2, wherein communication device #2 is an optical radio frequency communication device, and the method includes: Receive first information; the first information is used to indicate that communication device #2 has started operating; Send a second message; the second message is used to indicate that the communication device #1 is able to provide services to the communication device #2.

14. The method according to claim 13, characterized in that, The method further includes: Receive third information; the third information is used to indicate the working status of the communication device #1.

15. A communication method, characterized in that, Applied to communication device #2, wherein the communication device #2 is an optical radio frequency communication device, the method includes: Send the first message; the first message is used to indicate that communication device #2 has started operating. Receive second information; the second information is used to indicate that the communication device #1 can provide services to the communication device #2.

16. The method according to claim 15, characterized in that, The method further includes: Send a third message; the third message is used to indicate the working status of the communication device #1.

17. A communication method, characterized in that, The method is applied to a communication device #3, which is connected to multiple communication devices #4, wherein the multiple communication devices #4 are optical radio frequency communication devices, and the method includes: Send a fourth message, the fourth message being used to trigger a first operation, the fourth message including an identifier of a target communication device, the target communication device being a communication device that performs the first operation, and the target communication device being a communication device among the plurality of communication devices #4; Receive the fifth message; the fifth message is used to indicate that the communication device #2 has received the fourth message.

18. The method according to claim 17, characterized in that, The method further includes: Send a sixth message; the sixth message is used to instruct the communication device #4 to end the execution of the first operation.

19. A communication method, characterized in that, Applied to communication device #4, wherein the communication device #4 is an optical radio frequency communication device, the method includes: Receive fourth information; the fourth information is used to trigger the first operation, and the fourth information includes the identifier of the communication device #4; Send a fifth message; the fifth message is used to indicate that the communication device #4 has received the fourth message.

20. The method according to claim 19, characterized in that, The method further includes: Receive the sixth message; the sixth message is used to instruct the communication device #4 to end the execution of the first operation.

21. A communication device, characterized in that, The communication device is used to perform the method as described in any one of claims 13-20.

22. A communication device, characterized in that, include: Processor and memory; The memory is used to store computer instructions, which, when executed by the processor, cause the communication device to perform the method as described in any one of claims 13-20.

23. A communication device, characterized in that, include: Processor and interface circuits; among which, The interface circuit is used to receive code instructions and transmit them to the processor; The processor is used to run the code instructions to perform the method as described in any one of claims 13-20.

24. A communication device, characterized in that, The communication device includes a processor and a transceiver, the transceiver being used for information exchange between the communication device and other communication devices, and the processor executing program instructions to perform the method as described in any one of claims 13-20.

25. The communication device according to any one of claims 21-24, characterized in that, The communication device is a chip.

26. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a computer program or instructions that, when executed on a computer, cause the computer to perform the method as described in any one of claims 13-20.

27. A computer program product, characterized in that, The computer program product includes: a computer program or instructions that, when run on a computer, cause the computer to perform the method as described in any one of claims 13-20.

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