WO2023131138A1 - Data stream transmission method, optical communication system, and related apparatus - Google Patents

Abstract

Disclosed in the embodiments of the present invention are a data stream transmission method, an optical communication system, and a related apparatus, which are used for improving the utilization rate of bandwidth resources and hardware resources during a backup data transmission process. The method comprises: first, a first apparatus acquiring a first data stream; second, the first apparatus receiving a second data stream from a second apparatus, wherein the second data stream is a backup of at least some of the data streams borne by a first transmission frame that is sent by the second apparatus; and next, the first apparatus sending a second transmission frame to an optical communication apparatus, wherein the second transmission frame is used for bearing the first data stream and the second data stream.

Description

A data stream transmission method, an optical communication system and related devices

This application claims the priority of the Chinese patent application filed with the State Intellectual Property Office of China on January 5, 2022, with the application number 202210009362.1, and the title of the application is "A transmission method for data streams, an optical communication system and related devices", all of which The contents are incorporated by reference in this application.

technical field

The present application relates to the technical field of optical communication, and in particular to a data stream transmission method, an optical communication system and related devices.

Background technique

In an optical communication system, an aggregation device connects multiple terminal devices. A main transmission path and a standby transmission path are included between the convergence device and the terminal device. The data transmitted by the primary transmission path and the standby transmission path are the same. When the main transmission path is normal, the aggregation device and the terminal device process the data from the main transmission path. However, if the main transmission path fails, then the aggregation device and the terminal device process the data from the backup transmission path.

The backup transmission path is only used to back up the data transmitted by the primary transmission path. The backup transmission path occupies independent bandwidth resources and independent hardware resources. When the main transmission path is in a normal state, the bandwidth resources and hardware resources occupied by the standby transmission path are in an idle state. It can be seen that doing so wastes resources, making the utilization of bandwidth resources and hardware resources not high.

Contents of the invention

Embodiments of the present application provide a data stream transmission method, an optical communication system, and related devices. It is used to improve the utilization rate of bandwidth resources and hardware resources during backup data transmission.

A first aspect of the embodiments of the present invention provides a data stream transmission method. The method includes: first, the first device acquires a first data stream. Second, the first device receives a second data stream from the second device. The second data stream is a backup of at least part of the data stream carried by the first transmission frame sent by the second device. Again, the first device sends the second transmission frame to the optical communication device. The second transmission frame is used to carry the first data stream and the second data stream.

As shown in this aspect, the hardware resource for sending the second data stream used for backup is multiplexed with the hardware resource for sending the first data stream. The utilization rate of the hardware resources of the first device is improved. Moreover, the link between the first device and the first optical communication device is not only used to transmit the second data stream for backup, but also used to transmit the first data stream. Improved utilization of bandwidth resources.

Based on the first aspect, in an optional implementation manner, after the first device acquires the first data stream, the method further includes: the first device sends the third data stream to the second device. The third data stream is a backup of the first data stream. In this implementation manner, mutual backup between the first device and the second device can be realized. Improved backup efficiency.

Based on the first aspect, in an optional implementation manner, before the first device sends the third data stream to the second device, the method further includes: the first device acquires multiple data streams. The first device determines the first data stream from the multiple data streams according to the backup identifier. The first device copies the first data stream to obtain a third data stream. In this implementation manner, the first device can back up part of the data streams among multiple data streams based on the backup identifier. Effectively improve the efficiency of backup.

Based on the first aspect, in an optional implementation manner, before the first device receives the second data stream from the second device, the method further includes: the first device establishes a connection with the second device. The first device sends a first negotiation message to the second device through the connection. The first device receives a second negotiation message from the second device through the connection. The first negotiation message and the second negotiation message are used for negotiating the data flow transmitted by the first device and the second device through the connection. This data stream is used for backup. In this implementation manner, based on the connection, the first device and the second device can exchange data streams for backup, so as to implement data stream backup.

Based on the first aspect, in an optional implementation manner, the first device is a terminal device. Before the first device sends the second transmission frame to the optical communication device, the method further includes: the first device sends a bandwidth request message to the optical communication device. The bandwidth request message is used to request for transmission bandwidth. The transmission bandwidth is used to transmit the first data flow and the second data flow. The first device receives a bandwidth allocation message from the optical communication device. The bandwidth allocation message is used to indicate the transmission bandwidth. In this implementation manner, the first device can send the second transmission frame according to the bandwidth allocation message from the optical communication device. It is effectively ensured that the first device successfully sends the second data stream for backup to the optical communication device.

Based on the first aspect, in an optional implementation manner, the bandwidth allocation message is used to indicate the position of the first data stream in the transmission bandwidth. The bandwidth allocation message is also used to indicate the position of the second data stream in the transmission bandwidth. Doing so can ensure that the optical communication device can accurately distinguish the first data stream from the second data stream in the second transmission frame.

Based on the first aspect, in an optional implementation manner, the first device is a convergence device. The first device sends a bandwidth allocation message to the optical communication device. The bandwidth allocation message is used to indicate the position of the first data stream in the transmission bandwidth. The bandwidth allocation message is also used to indicate the position of the second data stream in the transmission bandwidth. In this implementation manner, it is effectively guaranteed that the first device successfully sends the second data stream for backup to the optical communication device.

A second aspect of the embodiments of the present invention provides a data stream transmission method. The method includes: firstly, the first optical communication device receives the second transmission frame from the first device. The first optical communication device acquires the first data stream and the second data stream carried by the second transmission frame. The first data stream is from the first device. The second data stream is a backup of at least part of the data stream carried by the first transmission frame sent by the second device. The first optical communication device sends the second data stream to the second optical communication device. For the description of the implementation process and beneficial effects of this aspect, please refer to the first aspect, and details will not be repeated.

Based on the second aspect, in an optional implementation manner, the method further includes: the first optical communication device receives the third data stream from the second optical communication device. The third data stream is a backup of the first data stream. The first optical communication device processes the first data stream or the third data stream.

Based on the second aspect, in an optional implementation manner, the processing the first data stream or the third data stream by the first optical communication device includes: acquiring, by the first optical communication device, a first bit error rate of the first data stream. The first optical communication device acquires a second bit error rate of the third data stream. If the first bit error rate is greater than the second bit error rate, the first optical communication device processes the third data stream. If the first bit error rate is less than or equal to the second bit error rate. The first optical communication device processes the first data stream. In this implementation manner, the first optical communication device determines the data stream to be processed based on the bit error rate, thereby improving the success rate of acquiring services carried by the processor.

Based on the second aspect, in an optional implementation manner, the first optical communication device is a converging device. Before the first optical communication device receives the second transmission frame from the first device, the method further includes: the first optical communication device receives a bandwidth request message from the first device. The bandwidth request message is used to request for transmission bandwidth. The transmission bandwidth is used to transmit the first data flow and the second data flow. The first optical communication device sends a bandwidth allocation message to the first device. The bandwidth allocation message is used to indicate the transmission bandwidth.

Based on the second aspect, in an optional implementation manner, the bandwidth allocation message is used to indicate a position of the first data stream in the transmission bandwidth. The bandwidth allocation message is also used to indicate the position of the second data stream in the transmission bandwidth.

Based on the second aspect, in an optional implementation manner, the acquisition by the first optical communication device of the first data stream and the second data stream carried by the second transmission frame includes: the first optical communication device allocates The message obtains the first data stream and the second data stream from the second transmission frame.

Based on the second aspect, in an optional implementation manner, the first optical communication device is a terminal device. Before the first optical communication device acquires the first data stream and the second data stream carried by the second transmission frame, the method further includes: the first optical communication device receives a bandwidth allocation message from the first device. The bandwidth allocation message is used to indicate the position of the first data stream in the transmission bandwidth. The bandwidth allocation message is also used to indicate the position of the second data stream in the transmission bandwidth.

A third aspect of the embodiments of the present invention provides a data stream transmission method. The method is applied to optical communication systems. The optical communication system includes a first optical communication device, a second optical communication device, a first device and a second device. The first optical communication device is respectively connected to the second optical communication device and the first device. The first device is connected with the second device. For the description of the process of the data stream transmission method and beneficial effects performed by the optical communication system shown in this aspect, please refer to the first to second aspects.

A fourth aspect of the embodiments of the present invention provides a device. The device includes: a processor and a transceiver. The processor and transceiver are interconnected by wires. The processor is used to obtain the first data stream. The transceiver is used for: receiving the second data stream from the second device. The second data stream is a backup of at least part of the data stream carried by the first transmission frame sent by the second device. The transceiver is also used for sending the second transmission frame to the optical communication device. The second transmission frame is used to carry the first data stream and the second data stream. For the description of the process of the data stream transmission method performed by the device in this aspect and the beneficial effects, refer to the description in the first aspect, and details will not be repeated.

A fifth aspect of the embodiments of the present invention provides an optical communication device. The optical communication device includes: a processor and a transceiver. The processor and transceiver are interconnected by wires. The transceiver receives the second transmission frame from the first device. The processor is configured to obtain the first data stream and the second data stream carried by the second transmission frame. The first data stream is from the first device. The second data stream is a backup of at least part of the data stream carried by the first transmission frame sent by the second device. The transceiver is also used to send the second data stream to the second optical communication device. The optical communication device shown in this aspect is used to implement the method for transmitting data streams. For the description of the specific execution process and beneficial effects, please refer to the first aspect, and details will not be repeated.

A sixth aspect of the embodiments of the present invention provides an optical communication system. The optical communication system includes a first optical communication device, a second optical communication device, a first device and a second device. Please refer to the description in the third aspect for the execution process and beneficial effects of the optical communication system execution data stream transmission method shown in this aspect.

Description of drawings

FIG. 1 is a structural example diagram of an optical communication system provided by the present application;

FIG. 2 is a structural example diagram of the first optical communication system provided by the embodiment of the present application;

FIG. 3 is a flowchart of execution steps of the first data stream transmission method provided by the embodiment of the present application;

FIG. 4 is a flow chart of execution steps of the second data stream transmission method provided by the embodiment of the present application;

FIG. 5 is a structural example diagram of a second optical communication system provided by an embodiment of the present application;

FIG. 6 is a flow chart of execution steps of the third data stream transmission method provided by the embodiment of the present application;

FIG. 7 is a flowchart of execution steps of the fourth data stream transmission method provided by the embodiment of the present application;

FIG. 8 is a structural example diagram of a communication device provided by an embodiment of the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

FIG. 1 is a structural example diagram of an optical communication system provided by the present application. The optical communication system includes at least one aggregation device. As shown in FIG. 1 , the optical communication system includes two converging devices as an example for illustration. The optical communication system also includes a plurality of terminal devices. Take the optical communication system as an example of a passive optical network (PON). Then, the convergence device 101 and the convergence device 102 are respectively optical line terminals (optical line terminals, OLTs). The terminal device 130 is an optical network unit (optical network unit, ONU). The convergence device 101 shown in FIG. 1 is connected to at least one terminal device 130 through an optical distribution network (ODN) 111. The converging device 102 is connected to at least one terminal device 130 through the ODN 112 . It should be noted that, taking the convergence device 101 as an example, the transmission direction of the optical signal from the convergence device 101 to the terminal device 130 is called a downlink direction. The direction in which the optical signal is transmitted from the terminal device 130 to the aggregation device 101 is called an uplink direction.

As shown in FIG. 1 , the ODN connection between the convergence device and the terminal device is taken as an example for illustration. When the optical communication system is another type of network, the converging device and the terminal device may be directly connected or connected through a point-to-multipoint optical splitting device or another converging device, which is not specifically limited. The present application does not limit the specific type of the optical communication system. As long as the converging device 101 can perform data interaction with multiple terminal devices 130 . For example, in other examples, the network type of the optical communication system may also be an industrial optical network, a data center network, a wavelength division multiplexing network, or an optical transport network (optical transport network, OTN).

Based on the optical communication system shown in FIG. 1 , an embodiment of the present application provides a method for a terminal device to send an uplink data stream to a converging device. Firstly, each execution subject involved in this embodiment will be described with reference to FIG. 2 . Wherein, FIG. 2 is a structural example diagram of the first optical communication system provided by the embodiment of the present application. The first optical communication device 201 and the second optical communication device 202 shown in FIG. 2 may be any of the following examples.

Example 1, the first optical communication device 201 and the second optical communication device 202 may be two different aggregation devices as shown in FIG. 1 . The first optical communication device 201 and the second optical communication device 202 in this example may be connected through a network cable or wirelessly. Example 2, the first optical communication device 201 and the second optical communication device 202 may also be two different circuit boards in the same aggregation device shown in FIG. 1 . In this example, the first optical communication device 201 and the second optical communication device 202 may be connected through wiring on two circuit boards. Example 3, the first optical communication device 201 and the second optical communication device 202 may be the same circuit board in the same convergence device. The first optical communication device 201 and the second optical communication device 202 on the same circuit board respectively perform data interaction with the terminal device based on different optical transmission channels. The first optical communication device 201 and the second optical communication device 202 may be connected through wiring on the circuit board.

The first device 203 and the second device 204 shown in FIG. 2 may be two different terminal devices as shown in FIG. 1 , two different circuit boards in the same terminal device, or the same circuit board in the same terminal device. For specific descriptions, please refer to the descriptions of the first optical communication device 201 and the second optical communication device 202 , and details are not repeated here.

FIG. 3 is a flowchart of execution steps of the first data stream transmission method provided by the embodiment of the present application. For the description of each execution subject shown in FIG. 3 , refer to FIG. 2 , and details are not repeated here. In this embodiment, the first optical communication device and the second optical communication device are two different converging devices.

Step 301, the first device and the second device establish a first connection.

In order to realize the backup of uplink data, a first connection needs to be established between the first device and the second device. The first connection is an electrical domain connection between the first device and the second device. The electrical channel is used to transmit electrical signals between the first device and the second device. For example, the first connection is a network cable connected between the first device and the second device. In another example, the first connection is a wireless channel connected between the wireless module of the first device and the wireless module of the second device. The wireless channel can be based on wireless fidelity (wireless fidelity, Wi-Fi), Bluetooth technology, narrow band Internet of things (narrow band internet of things, NB-IoT), Zigbee (Zigbee), ultra wide band (ultra wide band, UWB ), radio frequency identification (RFID), or near field communication (near field communication, NFC), etc.

If the first connection is a network cable connected between the first device and the second device, then the first device may send detection information to the network cable. The detection information is transmitted to the second device via the network cable. The second device sends a response message to the first device according to the detection information. The first device determines according to the response message that the first device and the second device have been connected through a network cable.

Step 302, the first device sends a first negotiation message to the second device through the first connection.

Step 303, the second device sends a second negotiation message to the first device through the first connection.

This embodiment does not limit the execution sequence between steps 302-303. The first device and the second device negotiate the backup of the uplink data flow sent by the second device through the first device by exchanging negotiation messages. Wherein, the first negotiation message carries the address of the first device, the address of the first optical communication device and the address of the second optical communication device. The second negotiation message carries the address of the second device, the first backup bandwidth and the address of the second optical communication device. Wherein, the address of the first device, the address of the second device, the address of the first optical communication device and the address of the second optical communication device are all media access control (MAC) addresses. The first backup bandwidth is the bandwidth of the upstream data flow from the second device that needs to be backed up. Optionally, if the second device determines that the upstream data stream from the network node is a data stream that needs to be backed up, then the second device obtains the address of the network node. The second negotiation message sent by the second device to the first device carries the address of the network node.

When the second device successfully sends the second negotiation message to the first device and receives the first negotiation message from the first device, the second device determines that the first device can back up the upstream data flow sent by the second device . When the first device successfully sends the first negotiation message to the second device and receives the second negotiation message from the second device, the first device determines that the first device can back up the upstream data flow sent by the second device .

Steps 301-303 shown in this embodiment are optional steps and are not limited. In other examples, it may also be determined between the first device and the second device that the first device can back up the upstream data flow sent by the second device according to an instruction of the network management device.

Step 304, the first device sends a first bandwidth request message to the first optical communication device.

The first bandwidth request message carries the address of the first device, the bandwidth of the first uplink data stream, the first backup bandwidth and the address of the second optical communication device. The first upstream data stream is a data stream that the first device needs to send to the first optical communication device. The first bandwidth request message is used to request the first transmission bandwidth. The first transmission bandwidth is used to transmit the second uplink transmission frame from the first device. The second uplink transmission frame is used to carry the first uplink data flow and the uplink data flow from the second device that needs to be backed up.

Step 305, the second device sends a second bandwidth request message to the second optical communication device.

The second bandwidth request message carries the address of the second device, the requested bandwidth and the address of the first optical communication device. The requested bandwidth is the bandwidth of the upstream data flow sent by the first device to the first optical communication device. The second bandwidth request message is used to request a second transmission bandwidth. The second transmission bandwidth is used to transmit the first uplink transmission frame from the second device.

Step 306, the first optical communication device sends a first bandwidth allocation message to the first device.

Step 307, the second optical communication device sends a second bandwidth allocation message to the second device.

The first optical communication device and the second optical communication device negotiate with each other whether to allow the first device to back up the upstream data flow sent by the second device. For example, the first optical communication device determines according to the first backup bandwidth carried in the first bandwidth request message that the bandwidth resources of the first optical communication device can be allocated for the second uplink data flow. The first optical communication device sends a first backup indication message to the second optical communication device. The second optical communication device sends a second backup instruction message to the first optical communication device. The second backup instruction message is used to indicate that the first device is allowed to back up the upstream data flow sent by the second device. The first optical communication device and the second optical communication device determine, according to the first backup indication message and the second backup indication message, that the first device backs up the upstream data flow sent by the second device.

The first bandwidth allocation message is used to indicate the first transmission bandwidth. The first device sends the second uplink transmission frame to the first optical communication device through the first transmission bandwidth. The second bandwidth allocation message is used to indicate the second transmission bandwidth. The second device sends the first uplink transmission frame to the second optical communication device through the second transmission bandwidth. The first bandwidth allocation message and the second bandwidth allocation message are also respectively used to indicate that the first device is allowed to back up the upstream data flow sent by the second device.

Steps 304-307 shown in this embodiment are optional examples and are not limited, as long as the first device can determine the first transmission bandwidth and the second device can determine the second transmission bandwidth.

Step 308, the first device acquires the first uplink data stream.

The first device receives a first upstream data stream from a network node. The network node may be a switch, a router, a broadband remote access server (broadband remote access server, BRAS), a broadband network gateway (broadband network gateway, BNG) or an internet protocol (internet protocol, IP) node, etc. limited. The first device can send the first upstream data stream to the first optical communication device.

Step 309, the second device obtains the fourth uplink data stream.

The second device determines the fourth upstream data flow that needs to be backed up. Specifically, the second device receives N channels of uplink data streams. The second device determines that each of the N upstream data flows is an upstream data flow that needs to be backed up. In another example, the second device may determine that the fourth uplink data flow is a high-priority data flow among the N uplink data flows. The N is any positive integer greater than 1. Specifically, the second device determines the fourth uplink data flow from the N uplink data flows according to the backup identifier. For example, the second device determines that among the N paths of uplink data flows, the uplink data flow carrying the backup identifier is the fourth uplink data flow with high priority. Wherein, the fourth uplink data flow with high priority may be an uplink data flow with a bit error rate lower than a threshold. As another example, the fourth uplink data flow with high priority may also be an uplink data flow carrying services that cannot be retransmitted, etc., which is not specifically limited in this embodiment. As another example, the backup identifier may also be a port number of the second device. The second device determines that the data flow input from the port with the backup identifier is the fourth uplink data flow that needs to be backed up.

Step 310, the second device sends a second uplink data stream to the first device.

The second device determines according to the second bandwidth allocation message from the second optical communication device that the first device can back up the fourth uplink data flow of the second device. To this end, after the second device obtains the fourth uplink data stream that needs to be backed up, the second device copies the fourth uplink data stream to obtain the second uplink data stream. The second device can send the second uplink data stream to the first device based on the established first connection.

The second uplink data stream sent by the second device to the first device may be as follows. Possibility 1. The second device determines the fourth uplink data flow from the N uplink data flows. The second device directly copies the fourth uplink data stream to obtain the second uplink data stream. Possibility 2, the second device encodes the fourth uplink data stream to obtain the encoded fourth uplink data stream. The second device copies the encoded fourth uplink data stream to obtain the second uplink data stream. It can be seen that in this manner, the second uplink data stream received by the first device is an encoded uplink data stream. Possibility 3, the second device encodes the fourth uplink data stream to obtain the encoded fourth uplink data stream. Then, the second device maps the encoded fourth uplink data stream into the second uplink transmission frame. For example, as shown in FIG. 2 , the second device maps the encoded fourth uplink data stream into the first uplink transmission frame 222 . The second device duplicates the first uplink transmission frame 222 to obtain the second uplink transmission frame 212 . It can be seen that in this way, what the first device receives is the second uplink transmission frame 212 that has carried the second uplink data flow. The description of the second uplink data stream sent by the second device in this embodiment is an optional example and is not limited. As long as the second device sends the second uplink data stream to the first device, the first device can continue to process the second uplink data stream until it is sent to the first optical communication device.

Step 311, the second device sends the first uplink transmission frame to the second optical communication device.

The second device shown in this embodiment sends the first uplink transmission frame to the second optical communication device according to the second bandwidth allocation message. The first uplink transmission frame is used to carry the fourth uplink data flow and the fifth uplink data flow. Wherein, the fifth uplink data stream is a data stream that does not need to be backed up. The frame type of the first uplink transmission frame may be a passive optical network encapsulation mode (GPON encapsulation mode, GEM) frame with a Gigabit function or a transmission container (transmission container, T-CONT). The description of the frame type of the first uplink transmission frame in this embodiment is an optional example and is not limited.

The second bandwidth allocation message sent by the second optical communication device to the second device may be used to indicate the position of the fourth uplink data stream in the second transmission bandwidth. The second bandwidth allocation message is also used to indicate the position of the fifth uplink data flow in the second transmission bandwidth.

For example, the second bandwidth allocation message is used to indicate the first time slot and the second time slot. Wherein, the first time slot is a time slot occupied by the first uplink transmission frame for carrying the fourth uplink data stream in the second transmission bandwidth. The second time slot is a time slot occupied by the first uplink transmission frame for carrying the fifth uplink data stream in the second transmission bandwidth. In another example, the second bandwidth allocation message is used to indicate the first frequency band and the second frequency band. Wherein, the first frequency band is a frequency band occupied by the first uplink transmission frame carrying the fourth uplink data stream in the second transmission bandwidth. The second frequency band is a frequency band occupied by the first uplink transmission frame carrying the fifth uplink data stream in the second transmission bandwidth. In another example, the second bandwidth allocation message is used to indicate the first frame number and the second frame number. Wherein, the first frame number is the frame number of the first uplink transmission frame carrying the fourth uplink data flow among the plurality of first uplink transmission frames. The second frame number is the frame number of the first uplink transmission frame carrying the fifth uplink data stream among the plurality of first uplink transmission frames. In another example, the second bandwidth allocation message is used to indicate the first codeword and the second codeword. Wherein, the first codeword is a codeword occupied by the first uplink transmission frame for carrying the fourth uplink data stream in the second transmission bandwidth. The second codeword is a codeword occupied by the first uplink transmission frame for carrying the fifth uplink data stream in the second transmission bandwidth.

With reference to the example shown in FIG. 2 , the multiple first uplink transmission frames sent by the second device to the second optical communication device include a first uplink transmission frame 221 for carrying the fourth uplink data stream and a first uplink transmission frame 221 for carrying the fifth uplink data flow. The first uplink transmission frame 222 of the data stream. As shown in FIG. 2 , the positions between multiple first uplink transmission frames 221 are continuous and the positions between multiple first uplink transmission frames 222 are continuous as an example. In other examples, the positions of the first uplink transmission frame 221 and the first uplink transmission frame 222 may also be arranged at intervals, which is not specifically limited.

Step 312, the first device sends the second uplink transmission frame to the first optical communication device.

The first device shown in this embodiment sends the second uplink transmission frame to the first optical communication device according to the first bandwidth allocation message. The second uplink transmission frame is used to carry the first uplink data flow and the second uplink data flow. With reference to the example shown in FIG. 2 , the multiple second uplink transmission frames sent by the first device to the first optical communication device include a second uplink transmission frame 211 for carrying the first uplink data flow and a second uplink transmission frame for carrying the second uplink data flow. The second uplink transmission frame 212 of the data flow. For the description of the second uplink transmission frame 211 and the second uplink transmission frame 212, please refer to the above description of the first uplink transmission frame 221 and the first uplink transmission frame 222, and details are not repeated here.

In order to obtain the second uplink transmission frame 211 used to carry the first uplink data stream, the first device may sequentially encode the first uplink data stream, map it into a frame, perform electro-optic conversion and other processing. For the description of encoding and mapping the first uplink data stream into a frame, please refer to the description of encoding and mapping the fourth uplink data stream into a frame shown in step 310 , and details are not repeated here.

Step 313, the first optical communication device sends the second uplink data stream to the second optical communication device.

The first optical communication device shown in this embodiment can obtain the address of the second optical communication device through the first bandwidth request message from the first device. The first optical communication device sends the second upstream data stream to the second optical communication device according to the address of the second optical communication device. As shown in FIG. 2 , the first optical communication device identifies the second uplink transmission frame 211 carrying the first uplink data stream in the first transmission bandwidth according to the first bandwidth allocation message. The first optical communication device can also identify the second uplink transmission frame 212 carrying the second uplink data stream in the first transmission bandwidth according to the first bandwidth allocation message.

The first optical communication device is capable of processing the second uplink transmission frame carrying the first uplink data flow, so as to acquire the service carried by the first uplink data flow. As shown in FIG. 2 , the first optical communication device sequentially performs photoelectric conversion, decapsulation and decoding processing on the second uplink transmission frame 211 to obtain services carried by the first uplink data stream. The first optical communication device sequentially performs photoelectric conversion, decapsulation and decoding processing on the second uplink transmission frame 212 to obtain the second uplink data stream carried by the second uplink transmission frame 212 . It should be noted that, in this example, the first optical communication device sends the decoded second uplink data stream to the second optical communication device as an example. In other examples, the first optical communication device may directly send the second uplink transmission frame 212 to the second optical communication device. The first optical communication device may also send the photoelectrically converted or decapsulated second uplink data stream to the second optical communication device, which is not specifically limited.

The first optical communication device sends the second uplink data flow to the second optical communication device through the established second connection. The second connection shown in this manner is an electrical domain channel connected between the first optical communication device and the second optical communication device. For the description of establishing the second connection between the first optical communication device and the second optical communication device, please refer to the description of establishing the first connection between the first device and the second device in step 301, and details are not repeated here. In this embodiment, the first optical communication device sends the second uplink data stream to the second optical communication device based on the electrical domain channel as an example for illustration. In other examples, the first optical communication device identifies the second uplink transmission frame that has carried the second uplink data stream. The first optical communication device directly sends the second uplink transmission frame in an optical signal state to the second optical communication device. The second optical communication device performs photoelectric conversion, decapsulation and decoding processing on the received second uplink transmission frame, so as to obtain the second uplink data stream.

Step 314, the second optical communication device processes the first target uplink data flow.

The first target uplink data flow shown in this embodiment is the second uplink data flow or the fourth uplink data flow. The second optical communication device acquires the fourth uplink data stream according to the received first uplink transmission frame. For a process for the second optical communication device to obtain the fourth uplink data stream, please refer to the process for the first optical communication device to obtain the first uplink data stream shown in step 313 , which will not be described in detail. Several optional situations in which the second optical communication device determines the first target uplink data flow are described below.

Case 1, in this case, at least one of the optical path between the first device and the first optical communication device, or the second connection between the first optical communication device and the second optical communication device fails. In this case, the second upstream data stream from the first device cannot be successfully transmitted to the second optical communication device via the first optical communication device. And the optical path between the second device and the second optical communication device shown in this situation is normal. It can be known that the fourth uplink data stream from the second device can be successfully transmitted to the second optical communication device. In the case that the second optical communication device has successfully received the fourth uplink data flow but not the second uplink data flow, the second optical communication device determines that the first target uplink data flow is the second uplink data flow. The second optical communication device processes the second uplink data flow to acquire services carried by the second uplink data flow.

In case 2, the optical path between the second device and the second optical communication device shown in this case fails. It can be seen that in this case, the fourth uplink data stream from the second device cannot be successfully transmitted to the second optical communication device. In this case, the optical path between the first device and the first optical communication device is normal, and the second connection between the first optical communication device and the second optical communication device is also normal. Then, the second upstream data stream from the first device can be successfully transmitted to the second optical communication device via the first optical communication device. In a case where the second optical communication device successfully receives the second uplink data flow but fails to receive the fourth uplink data flow, the second optical communication device determines that the first target uplink data flow is the fourth uplink data flow. The second optical communication device processes the fourth uplink data flow to obtain services carried by the fourth uplink data flow.

In case 3, the second optical communication device in this case has successfully received the fourth uplink data stream and the second uplink data stream. The second optical communication device selects one of the fourth uplink data flow and the second uplink data flow to process to obtain the service. For example, the second optical communication device processes the fourth uplink data stream from the second device by default. In another example, the second optical communication device may obtain the third bit error rate and the fourth bit error rate. Wherein, the third bit error rate is the bit error rate of the fourth uplink data stream. The fourth bit error rate is the bit error rate of the second uplink data stream. If the third BER is greater than the fourth BER, the second optical communication device determines that the first target uplink data flow is the second uplink data flow. If the third BER is less than or equal to the fourth BER, the second optical communication device determines that the first target uplink data flow is the fourth uplink data flow.

In this embodiment, the second uplink data stream used for backup is sent to only one first device as an example for illustration. In other examples, the second device may respectively send the second uplink data stream to multiple different first devices. Refer to the embodiment corresponding to FIG. 3 for the process of implementing backup by each first device, and details are not repeated here.

Using the method shown in this embodiment, the at least one second uplink transmission frame sent by the first device includes the first uplink data stream to be transmitted by the first device itself and the second uplink data stream from the second device. The hardware resource (for example, encoder, laser or processor, etc.) for sending the second uplink data stream used for backup is multiplexed with the hardware resource for sending the first uplink data stream. That is, the hardware resource for sending the first uplink data flow is the same as the hardware resource for sending the second uplink data flow. No separate hardware resources are provided for sending the second upstream data stream for backup. The utilization rate of the hardware resources of the first device is improved.

Since the first device does not set independent hardware resources for sending the second uplink data flow, the backup process requires little change to the live network, reducing backup costs.

Moreover, the link between the first device and the first optical communication device is not only used for transmitting the second upstream data flow for backup. The link is also used to transmit the first upstream data flow. Since there is no need to configure independent bandwidth resources only for the transmission of the second uplink data stream, the waste of bandwidth resources is avoided, and the utilization rate of bandwidth resources is improved.

The method provided in this application can also realize mutual backup at the terminal device side. Wherein, the mutual backup at the terminal device side refers to that the first device backs up the uplink data stream sent by the second device. And the second device backs up the upstream data flow sent by the first device. The mutual backup at the terminal side will be described below with reference to FIG. 4 . For the description of each execution subject shown in FIG. 4 , please refer to FIG. 2 , and details will not be repeated. Wherein, FIG. 4 is a flowchart of execution steps of the second data stream transmission method provided by the embodiment of the present application.

Step 401, the first device and the second device establish a first connection.

Step 402, the first device sends a first negotiation message to the second device through the first connection.

Step 403, the second device sends a second negotiation message to the first device through the first connection.

The first negotiation message and the second negotiation message shown in this embodiment are used to negotiate the data stream backup sent by the first device for the second device. For specific instructions, please refer to the corresponding steps 302-303 shown in FIG. 3 , and details are not repeated here. The first negotiation message and the second negotiation message shown in this embodiment are also used to negotiate the backup of the data stream sent by the second device for the first device. It can be seen that the first negotiation message also carries the second backup bandwidth. The second backup bandwidth is the upstream data flow from the first device that needs to be backed up.

Step 404, the first device sends a first bandwidth request message to the first optical communication device.

Step 405, the second device sends a second bandwidth request message to the second optical communication device.

The first bandwidth request message and the second bandwidth request message shown in this embodiment are used to request backup of the upstream data flow sent by the second device through the first device. For specific description, please refer to the corresponding steps 304-305 shown in FIG. 3 , and details are not repeated here. The first bandwidth request message and the second bandwidth request message shown in this embodiment are also used to request that the second device back up the upstream data flow sent by the first device. Specifically, the second bandwidth request message also carries the second backup bandwidth.

Step 406, the first optical communication device sends a first bandwidth allocation message to the first device.

Step 407, the second optical communication device sends a second bandwidth allocation message to the second device.

The first optical communication device and the second optical communication device negotiate with each other whether to allow the first device to back up the upstream data flow sent by the second device, and whether to allow the second device to back up the upstream data flow sent by the first device. Refer to the corresponding step 307 shown in FIG. 3 for the specific negotiation process, and details are not repeated here.

Step 408, the first device acquires the first uplink data stream.

For the execution process of step 408, please refer to the corresponding step 308 shown in FIG. 3 , which will not be described in detail.

Step 409, the first device sends the third uplink data stream to the second device.

The first device determines the first upstream data flow that needs to be backed up. The first device duplicates the first upstream data stream to obtain a third upstream data stream. It can be seen that the third uplink data flow is a backup of the first uplink data flow. The first device sends the third uplink data stream to the second device through the first connection. For the process of obtaining the third uplink data stream by the first device shown in this embodiment, refer to the process of obtaining the second uplink data stream by the second device shown in step 310 corresponding to FIG. 3 , which will not be described in detail.

Step 410, the second device acquires the fourth uplink data stream.

Step 411, the second device sends a second uplink data stream to the first device.

For the description of the execution process of steps 410-411, please refer to the corresponding steps 309-310 shown in FIG. 3, and details are not repeated here.

Step 412, the second device sends the first uplink transmission frame to the second optical communication device.

The first uplink transmission frame sent by the second device to the second optical communication device includes the first uplink transmission frame carrying the fourth uplink data flow and the first uplink transmission frame carrying the fifth uplink data flow. For specific description, please refer to the corresponding step 311 shown in FIG. 3 , and details are not repeated here. The difference between the first uplink transmission frame shown in this embodiment and the first uplink transmission frame in FIG. 3 is that the second device also sends the first uplink transmission frame carrying the third uplink data stream to the second optical communication device. For the description of the process of carrying the third uplink data flow in the first uplink transmission frame, please refer to the description of carrying the second uplink data flow in the second uplink transmission frame shown in step 312 corresponding to FIG. 3 , and details are not repeated here.

Step 413, the first device sends the second uplink transmission frame to the first optical communication device.

For the description of the execution process of step 413, please refer to the corresponding step 312 shown in FIG. 3 , and details are not repeated here.

Step 414, the first optical communication device sends the second uplink data stream to the second optical communication device.

Step 415, the second optical communication device processes the first target uplink data flow.

For the description of the execution process of steps 414-415, please refer to the corresponding steps 313-314 shown in FIG. 3, and details are not repeated here.

Step 416, the second optical communication device sends the third uplink data stream to the first optical communication device.

For the description of the second optical communication device sending the third uplink data stream to the first optical communication device, please refer to the process of the first optical communication device sending the second uplink data stream to the second optical communication device shown in step 313 corresponding to FIG. 3 , without going into details.

Step 417, the first optical communication device processes the second target uplink data flow.

The second target uplink is the first uplink or the third uplink. For the description of the process of processing the second target upstream data stream by the first optical communication device shown in this embodiment, please refer to the description of the second optical communication device processing the first target upstream data stream shown in step 314 corresponding to FIG. 3 . I won't go into details.

The method shown in this embodiment utilizes the hardware resources of the first upstream data flow to send the second upstream data flow for backup, without configuring independent hardware resources for the second upstream data flow for backup. Similarly, the method utilizes hardware resources for sending the fourth upstream data stream to send the third upstream data stream for backup. Doing so effectively improves resource utilization.

The embodiments corresponding to FIG. 3 and FIG. 4 illustrate how the uplink data flow from the terminal device is backed up, and how the backed up uplink data flow is sent to the aggregation device. The embodiment of the present application also provides a transmission method illustrating how to back up the downlink data stream from the converging device and how to send the backed up downlink data stream to the terminal device. Each execution process involved in this embodiment will be described below with reference to FIG. 5 . Wherein, FIG. 5 is a structural example diagram of the second optical communication system provided by the embodiment of the present application.

The first optical communication device 502 and the second optical communication device 503 shown in FIG. 5 are located on the terminal device side. For specific descriptions, refer to descriptions of the first device and the second device corresponding to FIG. 2 , and details are not repeated here. The first device 501 and the second device 504 are located at the converging device side. For specific descriptions, please refer to descriptions of the first optical communication device and the second optical communication device corresponding to FIG. 2 , and details are not repeated here. FIG. 6 is a flow chart of execution steps of a third data stream transmission method provided by an embodiment of the present application. For the description of each execution subject shown in FIG. 6 , please refer to FIG. 5 , and details are not repeated here.

Step 601, the first device and the second device establish a first connection.

Step 602, the first device sends a first negotiation message to the second device through the first connection.

Step 603, the second device sends a second negotiation message to the first device through the first connection.

For the execution process of steps 601-603, please refer to the corresponding steps 301-303 shown in FIG. 3 , which will not be described in detail.

Step 604, the first device sends a third bandwidth allocation message to the first optical communication device.

Step 605, the second device sends a fourth bandwidth allocation message to the second optical communication device.

The first device and the second device negotiate with each other whether to allow the first device to back up the downstream data flow sent by the second device. For the specific negotiation process, refer to the corresponding step 307 shown in FIG. 3 , which will not be described in detail. If the negotiation is successful, the third bandwidth allocation message is used to indicate the third transmission bandwidth. The second bandwidth allocation message is used to indicate the fourth transmission bandwidth. The third transmission bandwidth is used to transmit the second downlink transmission frame from the first device. The fourth transmission bandwidth is used to transmit the first downlink transmission frame from the second device.

Step 606, the first device acquires the first downlink data stream.

Step 607, the second device acquires the fourth downlink data stream.

Step 608, the second device sends the second downlink data stream to the first device.

As shown in steps 606-608, please refer to the corresponding steps 308-310 shown in FIG. 3, and details are not repeated here.

Step 609, the second device sends the first downlink transmission frame to the second optical communication device.

The first uplink transmission frame sent by the second device to the second optical communication device shown in this embodiment is the first downlink transmission frame that has carried the fourth downlink data flow and the first downlink transmission frame that has carried the fifth downlink data flow. line transmission frame. For the description of the fourth downlink data flow and the fifth downlink data flow, refer to the description of the fourth uplink data flow and the fifth uplink data flow shown in step 311 corresponding to FIG. 3 , and details are not repeated here.

As shown in the example in FIG. 5 , the first downlink transmission frame sent by the second device 504 to the second optical communication device 503 includes the first downlink transmission frame 521 carrying the fourth downlink data flow and the first downlink transmission frame 521 carrying the fifth downlink data flow. The first downlink transmission frame 522 of the data stream. For the description of the first downlink transmission frame 521 and the first downlink transmission frame 522, please refer to the description of the first downlink transmission frame 221 and the first downlink transmission frame 222 corresponding to FIG.

Step 610, the first device sends a second downlink transmission frame to the first optical communication device.

The second downlink transmission frame includes a second downlink transmission frame for carrying the first downlink data flow and a second downlink transmission frame for carrying the second downlink data flow. For example, as shown in FIG. 5 , the first device 501 sends to the first optical communication device 502 a second downlink frame 511 carrying the first downlink data flow and a second downlink transmission frame 512 used to carry the second downlink data flow. For the description of the positional relationship between the second downlink transmission frame 511 and the second downlink transmission frame 512, refer to the description of the position between the second downlink transmission frame 211 and the second downlink transmission frame 212 shown in FIG. Do repeat.

Step 611, the first optical communication device sends a second downlink data stream to the second optical communication device.

The third bandwidth allocation message sent by the first device to the first optical communication device shown in this embodiment is also used to indicate the position of the first downlink data stream in the second downlink transmission frame. The third bandwidth allocation message is also used to indicate the position of the second downlink data flow in the second downlink transmission frame. It can be seen that, according to the third bandwidth allocation message from the first device, the first optical communication device can determine in the second downlink transmission frame that the second downlink transmission frame that has carried the first downlink data flow and the second downlink transmission frame that has carried the second downlink data flow of the second downlink transmission frame. For specific description, please refer to step 311 in FIG. 3 , and details are not repeated here.

Step 612, the second optical communication device processes the first target downlink data flow.

The first target downlink data flow shown in this embodiment is the second downlink data flow or the fourth downlink data flow. For the specific process, please refer to the corresponding step 314 shown in FIG. 3 , which will not be described in detail.

This embodiment may be executed in combination with the embodiment corresponding to FIG. 3 or FIG. 6 , so as to realize the backup of the downlink data flow on the converging device side and the backup of the uplink data flow on the terminal device side.

By adopting the method shown in this embodiment, the hardware resource for sending the second downlink data stream used for backup is multiplexed with the hardware resource for sending the first downlink data stream. That is, the hardware resource for sending the first downlink data flow is the same as the hardware resource for sending the second downlink data flow. No separate hardware resources are provided for sending the second downstream data stream for backup. The utilization rate of the hardware resources of the first device is improved.

Since the first device does not set independent hardware resources for sending the second downlink data stream, the backup process requires little change to the existing network, reducing backup costs.

Moreover, the link between the first device and the first optical communication device is not only used for transmitting the second downstream data flow for backup. The link is also used to transmit the first downstream data flow. Since there is no need to configure independent bandwidth resources only for the transmission of the second downlink data flow, waste of bandwidth resources is avoided, and the utilization rate of bandwidth resources is improved.

The method provided in this application can also realize mutual backup on the aggregation device side. Wherein, the mutual backup at the converging device side refers to that the first device backs up the downlink data stream sent by the second device. And the second device backs up the downstream data stream sent by the first device. FIG. 7 is a flow chart of execution steps of a fourth downlink data stream transmission method provided by an embodiment of the present application. For the description of each execution subject shown in FIG. 7 , please refer to FIG. 5 , and details are not repeated here.

Step 701, the first device and the second device establish a first connection.

Step 702, the first device sends a first negotiation message to the second device through the first connection.

Step 703, the second device sends a second negotiation message to the first device through the first connection.

Step 704, the first device sends a third bandwidth allocation message to the first optical communication device.

Step 705, the second device sends a fourth bandwidth allocation message to the second optical communication device.

Step 706, the first device acquires the first downlink data stream.

For the execution process of steps 701-706, refer to the corresponding steps 601-606 shown in FIG. 6 , which will not be described in detail.

Step 707, the first device sends the third downlink data stream to the second device.

The first device determines the first downlink data flow that needs to be backed up. The first device duplicates the first downlink data stream to obtain a third downlink data stream. It can be seen that the third downlink data flow is a backup of the first downlink data flow. The first device sends the third downlink data stream to the second device through the first connection. For the process of obtaining the third downlink data stream by the first device shown in this embodiment, refer to the process of obtaining the third downlink data stream by the first device shown in step 409 corresponding to FIG. 4 , which will not be described in detail.

Step 708, the second device obtains the fourth downlink data stream.

Step 709, the second device sends the second downlink data stream to the first device.

For the description of the execution process of steps 708-709, refer to the corresponding steps 607-608 shown in FIG. 6, and details are not repeated here.

Step 710, the second device sends the first downlink transmission frame to the second optical communication device.

The first downlink transmission frame sent by the second device to the second optical communication device includes the first downlink transmission frame carrying the fourth downlink data flow and the first downlink transmission frame carrying the fifth downlink data flow. For specific description, please refer to the corresponding step 609 shown in FIG. 6 , and details are not repeated here.

The difference between the first downlink transmission frame shown in this embodiment and the first downlink transmission frame shown in FIG. transmit frame. For the description of the process of carrying the third downlink data flow in the first downlink transmission frame, please refer to the description of carrying the second downlink data flow in the second downlink transmission frame shown in step 610 corresponding to FIG. 6 , and details are not repeated here.

Step 711, the first device sends a second downlink transmission frame to the first optical communication device.

Step 712, the first optical communication device sends the second downlink data stream to the second optical communication device.

Step 713, the second optical communication device processes the first target downlink data flow.

For the description of the execution process of steps 711-713, please refer to the corresponding steps 610-612 shown in FIG. 6, and details are not repeated here.

Step 714, the second optical communication device sends the third downlink data stream to the first optical communication device.

For the description of the second optical communication device sending the third downlink data stream to the first optical communication device, please refer to the process of the first optical communication device sending the second downlink data stream to the second optical communication device shown in step 611 corresponding to FIG. 6 , without going into details.

Step 715, the first optical communication device processes the second target downlink data flow.

The second target downlink data flow is the first downlink data flow or the third downlink data flow. For the description of the process of processing the second target downstream data stream by the first optical communication device shown in this embodiment, please refer to the description of the second optical communication device processing the first target downstream data stream shown in step 612 corresponding to FIG. 6 . I won't go into details.

In the method shown in this embodiment, the hardware resource for sending the first downlink data flow is used to send the second downlink data flow for backup, and there is no need to separately configure independent hardware resources for the second downlink data flow for backup. Similarly, the method utilizes the hardware resource for sending the fourth downlink data flow to send the third downlink data flow for backup. This effectively improves hardware resource and bandwidth utilization.

FIG. 8 is a structural example diagram of a communication device provided by an embodiment of the present application. The communication device 800 includes a processor 801 , a transceiver 802 and a memory 803 . The processor 801 is connected to the memory 803 and the transceiver 802 respectively through lines. The processor 801 reads and executes the computer program stored in the memory 803 to perform corresponding processing. The functions of the processor 801 may be partially or completely implemented by hardware. Processor 801 may be one or more chips, or one or more integrated circuits. For example, the processor 801 may be one or more field-programmable gate arrays (field-programmable gate array, FPGA), application specific integrated circuit (ASIC), system chip (system on chip, SoC), central processing (central processor unit, CPU), network processor (network processor, NP), digital signal processing circuit (digital signal processor, DSP), microcontroller (micro controller unit, MCU), programmable controller (programmable logic device , PLD) or other integrated chips, or any combination of the above chips or processors, etc. It should be understood that memory is an optional component when the processor is implemented in hardware.

The communication device 800 may be the first apparatus as shown in FIG. 3 . If the first device is used to execute the embodiment corresponding to FIG. 3 , then the processor 801 is used to execute step 301 and step 308 . The transceiver 802 is used to perform step 302 , step 304 and step 312 . If the first device is configured to execute the embodiment corresponding to FIG. 4 , then the processor 801 is configured to execute step 401 and step 408 . The transceiver 802 is used to perform step 402 , step 404 , step 409 and step 413 . If the first device is configured to execute the embodiment corresponding to FIG. 6 , then the processor 801 is configured to execute step 601 and step 606 . The transceiver 802 is used to perform step 602, step 604 and step 610. If the first device is used to execute the embodiment corresponding to FIG. 7 , then the processor 701 is used to execute step 701 and step 706 . The transceiver 802 is used to perform step 703 , step 704 , step 707 and step 711 .

The communication device 800 may be the second apparatus as shown in FIG. 3 . If the second device is used to execute the embodiment corresponding to FIG. 3 , then the processor 801 is configured to execute step 301 and step 309 . The transceiver 802 is used to perform step 303 , step 305 , step 310 and step 311 . If the second device is used to execute the embodiment corresponding to FIG. 4 , then the processor 801 is configured to execute step 401 and step 410 . The transceiver 802 is used to perform step 403 , step 405 and step 412 . If the second device is used to execute the embodiment corresponding to FIG. 6 , then the processor 801 is configured to execute step 601 and step 607 . The transceiver 802 is used to perform step 603 , step 605 and step 609 . If the second device is used to execute the embodiment corresponding to FIG. 7 , then the processor 701 is configured to execute step 701 and step 708 . The transceiver 802 is used to perform step 703 , step 705 and step 710 .

The communication device 800 may be a first optical communication device as shown in FIG. 3 . If the first optical communication device is used to implement the embodiment corresponding to FIG. 3 , then the transceiver 802 is used to perform step 306 and step 313 . If the first optical communication device is used to execute the embodiment corresponding to FIG. 4 , then the transceiver 802 is used to execute step 406 and step 414 . The processor 801 is configured to execute step 417 . If the first optical communication device is used to implement the embodiment corresponding to FIG. 6 , then the transceiver 802 is used to perform step 611 . If the first optical communication device is used to implement the embodiment corresponding to FIG. 7 , then the transceiver is used to perform step 712 . The processor 801 is configured to execute step 715 .

The communication device 800 may be a second optical communication device as shown in FIG. 3 . If the second optical communication device is used to implement the embodiment corresponding to FIG. 3 , then the transceiver 802 is used to perform step 307 . The processor 801 is configured to execute step 314 . If the second optical communication device is used to implement the embodiment corresponding to FIG. 4 , then the transceiver 802 is used to perform step 407 and step 416 . The processor 801 is configured to execute step 415 . If the second optical communication device is used to execute the embodiment corresponding to FIG. 6 , the processor 801 is configured to execute step 612 . If the second optical communication device is used to execute the embodiment corresponding to FIG. 7 , the processor 801 is configured to execute step 713 . The transceiver 802 is used to perform step 714 .

The present application provides an optical communication system. The structure of the first embodiment of the optical communication system may be shown in FIG. 2 . The optical communication system is used to implement the embodiment shown in FIG. 3 or FIG. 4 . Refer to 5 for the structure of the second embodiment of the optical communication system. The optical communication system is used to implement the embodiment shown in FIG. 6 or FIG. 7 .

The above embodiments are only used to illustrate the technical solution of the present invention, not to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions described in the foregoing embodiments can still be modified, or some technical features thereof can be equivalently replaced. However, these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (21)

1. A data stream transmission method, characterized in that the method comprises:

   the first device acquires the first data stream;

   The first device receives a second data stream from the second device, and the second data stream is a backup of at least part of the data stream carried by the first transmission frame sent by the second device;

   The first device sends a second transmission frame to the optical communication device, and the second transmission frame is used to carry the first data stream and the second data stream.
2. The method according to claim 1, wherein after the first device obtains the first data stream, the method further comprises:

   The first device sends a third data stream to the second device, the third data stream being a backup of the first data stream.
3. The method according to claim 2, wherein before the first device sends the third data stream to the second device, the method further comprises:

   the first device acquires a plurality of data streams;

   The first device determines the first data stream from the multiple data streams according to the backup identifier;

   The first device copies the first data stream to obtain the third data stream.
4. The method according to any one of claims 1 to 3, wherein before the first device receives the second data stream from the second device, the method further comprises:

   the first device establishes a connection with the second device;

   the first device sends a first negotiation message to the second device through the connection;

   The first device receives a second negotiation message from the second device through the connection, and the first negotiation message and the second negotiation message are used to negotiate the communication between the first device and the second device through the connection. The connection transmits a data stream, which is used for backup.
5. The method according to any one of claims 1 to 4, wherein the first device is a terminal device, and before the first device sends the second transmission frame to the optical communication device, the method further includes:

   The first device sends a bandwidth request message to the optical communication device, where the bandwidth request message is used to request acquisition of a transmission bandwidth, and the transmission bandwidth is used to transmit the first data stream and the second data stream;

   The first device receives a bandwidth allocation message from the optical communication device, where the bandwidth allocation message is used to indicate the transmission bandwidth.
6. The method according to claim 5, wherein the bandwidth allocation message is used to indicate the position of the first data stream in the transmission bandwidth, and the bandwidth allocation message is also used to indicate the position of the second data stream in the transmission bandwidth. The position in the transmission bandwidth.
7. The method according to any one of claims 1 to 4, wherein the first device is a converging device, and before the first device sends the second transmission frame to the optical communication device, the method further includes:

   The first device sends a bandwidth allocation message to the optical communication device, the bandwidth allocation message is used to indicate the position of the first data stream in the transmission bandwidth, and the bandwidth allocation message is also used to indicate the The position of the second data stream in the transmission bandwidth.
8. A data stream transmission method, characterized in that the method comprises:

   The first optical communication device receives the second transmission frame from the first device, the first optical communication device obtains the first data stream and the second data stream carried by the second transmission frame, and the first data stream comes from In the first device, the second data stream is a backup of at least part of the data stream carried by the first transmission frame sent by the second device;

   The first optical communication device sends the second data stream to the second optical communication device.
9. The method according to claim 8, characterized in that the method further comprises:

   The first optical communication device receives a third data stream from the second optical communication device, the third data stream being a backup of the first data stream;

   The first optical communication device processes the first data stream or the third data stream.
10. The method according to claim 9, wherein processing the first data stream or the third data stream by the first optical communication device comprises:

    The first optical communication device acquires a first bit error rate of the first data stream;

    The first optical communication device acquires a second bit error rate of the third data stream;

    If the first bit error rate is greater than the second bit error rate, the first optical communication device processes the third data stream;

    If the first bit error rate is less than or equal to the second bit error rate, the first optical communication device processes the first data stream.
11. The method according to any one of claims 8 to 10, wherein the first optical communication device is a converging device, and before the first optical communication device receives the second transmission frame from the first device, the Methods also include:

    The first optical communication device receives a bandwidth request message from the first device, where the bandwidth request message is used to request acquisition of a transmission bandwidth, and the transmission bandwidth is used to transmit the first data stream and the second data stream flow;

    The first optical communication device sends a bandwidth allocation message to the first device, where the bandwidth allocation message is used to indicate the transmission bandwidth.
12. The method according to claim 11, wherein the bandwidth allocation message is used to indicate the position of the first data stream in the transmission bandwidth, and the bandwidth allocation message is also used to indicate the position of the second data stream The position of the stream within the transmission bandwidth.
13. The method according to claim 11 or 12, wherein the acquiring, by the first optical communication device, the first data stream and the second data stream carried by the second transmission frame comprises:

    The first optical communication device acquires the first data stream and the second data stream from the second transmission frame according to the bandwidth allocation message.
14. The method according to any one of claims 8 to 10, wherein the first optical communication device is a terminal device, and the first optical communication device acquires the first data stream carried by the second transmission frame and before the second data stream, the method also includes:

    The first optical communication device receives a bandwidth allocation message from the first device, the bandwidth allocation message is used to indicate the position of the first data stream in the transmission bandwidth, and the bandwidth allocation message is also used to indicate the The position of the second data stream in the transmission bandwidth.
15. A data stream transmission method, characterized in that the method is applied to an optical communication system, and the optical communication system includes a first optical communication device, a second optical communication device, a first device and a second device, and the first optical communication device An optical communication device is respectively connected to the second optical communication device and the first device, the first device is connected to the second device, and the method includes:

    The first device obtains a first data stream;

    The first device receives a second data stream from the second device, and the second data stream is a backup of at least part of the data stream carried by the first transmission frame sent by the second device;

    The first device sends a second transmission frame to the first optical communication device, and the second transmission frame is used to carry the first data stream and the second data stream;

    The first optical communication device receives the second transmission frame from the first device, and the first optical communication device acquires the first data stream and the second transmission frame carried by the second transmission frame data flow;

    The first optical communication device sends the second data stream to the second optical communication device.
16. The method according to claim 15, wherein the second optical communication device is connected to the second device, and after the first device acquires the first data stream, the method further comprises:

    the first device sends a third data stream to the second device, the third data stream being a backup of the first data stream;

    The second device obtains a fourth data stream, and the second data stream is a backup of the fourth data stream;

    The second device sends the first transmission frame to the second optical communication device, and the first transmission frame is used to carry the third data stream and the fourth data stream;

    The second optical communication device receives the first transmission frame from the second device, and the second optical communication device obtains the third data stream and the fourth data stream carried by the first transmission frame. data flow;

    The second optical communication device sends the third data stream to the first optical communication device.
17. A device, characterized in that the device includes: a processor and a transceiver, and the processor and the transceiver are interconnected through a line;

    The processor is configured to obtain a first data stream;

    The transceiver is used for:

    receiving a second data stream from a second device, the second data stream being a backup of at least part of the data stream carried by the first transmission frame sent by the second device;

    sending a second transmission frame to the optical communication device, where the second transmission frame is used to carry the first data stream and the second data stream.
18. The device according to claim 17, wherein the transceiver is further configured to send a third data stream to the second device, the third data stream being a backup of the first data stream.
19. An optical communication device, characterized in that the optical communication device includes: a processor and a transceiver, and the processor and the transceiver are interconnected through a line;

    the transceiver receives a second transmission frame from the first device;

    The processor is configured to acquire a first data stream and a second data stream carried by the second transmission frame, the first data stream is from the first device, and the second data stream is sent by the second device backup of at least part of the data stream carried by the first transmission frame;

    The transceiver is further configured to send the second data stream to a second optical communication device.
20. The optical communication device according to claim 19, wherein the transceiver is further configured to receive a third data stream from the second optical communication device, the third data stream being the first data stream backup;

    The processor is further configured to process the first data stream or the third data stream.
21. An optical communication system, characterized in that the optical communication system includes a first optical communication device, a second optical communication device, a first device and a second device, wherein:

    The first optical communication device is respectively connected to the second optical communication device and the first device, and the first device is connected to the second device;

    The first device is configured to obtain a first data stream;

    The first device is configured to receive a second data stream from the second device, and the second data stream is a backup of at least part of the data stream carried by the first transmission frame sent by the second device;

    The first device is configured to send a second transmission frame to the first optical communication device, and the second transmission frame is used to carry the first data stream and the second data stream;

    The first optical communication device is configured to receive the second transmission frame from the first device, and the first optical communication device is also configured to obtain the first data stream carried by the second transmission frame and said second data stream;

    The first optical communication device is configured to send the second data stream to the second optical communication device.

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