WO-2026091703-A1 - COMMUNICATION APPARATUS, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD

WO2026091703A1WO 2026091703 A1WO2026091703 A1WO 2026091703A1WO-2026091703-A1

Abstract

A communication apparatus, a communication system, and a communication method, capable of transmitting operation, administration, and maintenance (OAM) information in a radio-over-fiber communication scenario. A first communication apparatus comprises: a first processing module, a signal splitting module, and a photoelectric conversion module. The photoelectric conversion module is used for receiving an optical signal, converting the received optical signal into an electrical signal to obtain a first signal, and outputting the first signal to the signal splitting module. The signal splitting module is used for demodulating the first signal to obtain a second signal, and sending the second signal to a power supply driving module, wherein the second signal is a low-speed signal, and the second signal is used for indicating OAM information of a second communication apparatus. The first processing module is used for processing the OAM information of the second communication apparatus.

Inventors

ZOU, Lingxiu
SI, XIAOSHU
WANG, TIANXIANG
WANG, XINYUAN

Assignees

华为技术有限公司

Dates

Publication Date: 20260507
Application Date: 20250723
Priority Date: 20241101

Claims (20)

A first communication device, characterized in that it comprises: 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.
The apparatus according to claim 1 is characterized in that the first processing module supports serial communication.
The apparatus according to claim 2 is characterized in that it further includes a first detection module, the first detection module being used to detect whether there is a second signal, and to output the second signal when the second signal is detected.
The device according to claim 3 is characterized in that the first detection module is used to detect the voltage or current level.
The apparatus according to any one of claims 1-4 is characterized in that it further comprises: a first radio frequency module, the first radio frequency module being configured to acquire a third signal obtained from demodulating the first signal by the signal splitting module, the third signal being a radio frequency signal.
A third communication device, characterized in that it comprises: 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.
The apparatus according to claim 6 is characterized in that the second processing module supports serial communication.
The apparatus according to claim 7 is characterized in that it further includes a second detection module, the second detection module being used to detect whether the fourth signal is present, and to output the fourth signal if the fourth signal is present.
The apparatus according to claim 7 is characterized in that the second detection module is used to detect high and low voltage levels.
The apparatus according to any one of claims 6-9 is characterized in that it further comprises: a second radio frequency module, the second radio frequency module being used to generate a sixth signal and send the sixth signal to the signal combining module; wherein the sixth signal is a radio frequency signal.
A communication system, characterized in that it 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.
The system according to claim 11 is characterized in that it further includes a third device, the third device being used to send second OAM information, the second OAM information being sent in time-division multiplexing with the first OAM information.
A communication method, characterized in that it is applied to a communication device #1, wherein the communication device #1 is connected to a communication device #2, and the communication device #2 is an optical radio frequency communication device, the method comprising: 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.
The method according to claim 13, characterized in that it further comprises: Receive third information; the third information is used to indicate the working status of the communication device #1.
A communication method, characterized in that it is applied to a communication device #2, wherein the communication device #2 is an optical radio frequency communication device, the method comprising: 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 communication device #1 can provide services to communication device #2.
The method according to claim 15, characterized in that it further comprises: Send a third message; the third message is used to indicate the working status of the communication device #1.
A communication method, characterized in that it is applied to a communication device #3, the communication device #3 being connected to a plurality of communication devices #4, the plurality of communication devices #4 being optical radio frequency communication devices, the method comprising: 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.
The method according to claim 17, characterized in that it further comprises: Send a sixth message; the sixth message is used to instruct the communication device #4 to end the execution of the first operation.
A communication method, characterized in that it is applied to a communication device #4, wherein the communication device #4 is an optical radio frequency communication device, the method comprising: 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.
The method according to claim 19, characterized in that it further comprises: Receive the sixth message; the sixth message is used to instruct the communication device #4 to end the execution of the first operation.

Description

Communication devices, communication systems and communication methods This application claims priority to Chinese Patent Application No. 202411562402.0, filed on November 1, 2024, entitled "Communication Apparatus, Communication System and Communication Method", the entire contents of which are incorporated herein by reference. Technical Field This application relates to the field of communication technology, and in particular to a communication device, communication system and communication method. Background Technology 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). 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 This application provides a communication device, communication system, and communication method that can transmit OAM information in the context of optical wireless communication. To achieve the above objectives, this application adopts the following technical solution: 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. 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. 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. 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. 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. 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. 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. 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. In one