WO2020147766A1 - Communication method, apparatus, and system - Google Patents

Abstract

Disclosed in the present application are a communication method, apparatus, and system, relating to the field of communications. The method comprises: a first optical network unit ONU, by means of a first port comprised therein, receives a management packet from a management network and, by means of a second port comprised therein, receives a service packet from a metropolitan area network, the management packet belonging to a management service, and the service packet belonging to a user service; the first ONU generates a data frame, the data frame comprising the packet data in the management packet; the first ONU converts the data frame into a first optical signal of a first wavelength and converts the service packet into a second optical signal of a second wavelength, the first wavelength and the second wavelength being different; and the first ONU sends the first optical signal and the second optical signal to a second ONU. The present application can prevent the normal transmission of a management service from being affected.

Description

Communication method, device and system

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is CN 201910045228.5, and the invention title is "a communication method, device and system" on January 17, 2019, the entire content of which is incorporated herein by reference Applying.

Technical field

This application relates to the field of communication, and in particular to a communication method, device and system.

Background technique

A metropolitan area network and an optical network unit (ONU) are deployed in different areas, and the area may be a city. The metropolitan area network in each area is connected to the ONU, and the ONU in each area is connected by optical fiber. A computer room can be deployed in the area, and the equipment in the computer room forms a local area network, which is connected to the metropolitan area network deployed in the area where the computer room is located. The equipment in the computer room is connected to the management switch to form a management network of the computer room, and the equipment in the computer room can be managed through the management network.

For LANs in two areas, a service channel can be established between the LANs in the two areas. The service channel includes the channel from the LAN in one area to the ONU in the area, and the ONU in the area and the ONU in the other area. The channel between the ONUs and the channel between the ONU in the other area and the local area network in the other area, and the service channel is used to transmit user services between the two local area networks. In order to manage the management networks of the two areas in a unified manner, a controller can be set up in the management network of one area, and the controller establishes a management channel on the basis of the service channel, so that the controller can directly send to the management network of the area The management service and the management service are sent to the management network of another area through the management channel to realize unified management of the management network of the two areas.

In the process of implementing this application, the inventor found that the prior art has at least the following problems:

Since the management channel is established on the basis of the business channel, when the business channel is abnormal, the normal transmission of the management business will be affected.

Summary of the invention

In order to avoid affecting the normal transmission of management services, this application provides a communication method, device and system. The technical solution is as follows:

In the first aspect, the present application provides a communication method in which a first optical network node ONU receives a management message from a management network through a first port included in the method, and receives management messages from a metropolitan area through a second port included in the first optical network node ONU. A service message is received in the network, and the management message belongs to a management service; a data frame is generated, and the data frame includes the message data in the management message; the data frame is converted into the first light of the first wavelength Signal and converting the service packet into a second optical signal of a second wavelength, where the first wavelength is different from the second wavelength; sending the first optical signal and the second optical signal to a second ONU. Since the first wavelength and the second wavelength are different, different wavelengths correspond to different channels between the two ONUs, and because the first ONU receives management services and user services through two different ports, there is a gap between the first ONU and the second ONU. Divide the first optical signal corresponding to the management service and the second optical signal corresponding to the user service into different channels for transmission, so that the management channel for transmitting management services and the service channel for transmitting user services are established based on the two channels It can be separated so that the abnormality of the service channel will not affect the normal transmission of the management service.

In a possible implementation of the first aspect, the data frame is a first optical transport network OTN data frame, and the first ONU generates a second OTN data frame; and the first ONU transmits the management message The message data in is added to the target field of the second OTN data frame to obtain the first OTN data frame. The OTN data frame is a data frame transmitted on the optical supervisory channel between two ONUs. Therefore, the message data is added to the second OTN data frame to obtain the first OTN data frame, so that the optical supervisory channel can be used to transmit the message Data, and the service message can be transmitted on the optical service channel between the two ONUs, so that the management service and the user service are transmitted on two different channels, and then used for the management channel of the transmission management service and for transmission The service channel of the user service is separated.

In a possible implementation manner of the first aspect, the first ONU removes a preset type of message header field from a message header of the management message to obtain message data in the management message . This can reduce the amount of data transferred.

In a possible implementation of the first aspect, the first ONU includes at least one cache queue, and each cache queue in the at least one cache queue corresponds to a priority; the first ONU recognizes the management A priority field of the message, extracting the priority of the management message from the priority field, and buffering the message data of the management message in a buffer queue corresponding to the priority of the management message; According to the priority corresponding to each of the cache queues, one cache queue is selected from the at least one cache queue through a preset strategy; message data is obtained from the selected cache queue, and the obtained message is generated Data frame of data. Since the message data in the buffer queue is selected according to the priority of the message, the high priority message data can be sent first.

In a possible implementation manner of the first aspect, the preset type of packet header field is a check field.

In a possible implementation of the first aspect, in the method, the first optical network node ONU receives the optical signal sent by the second ONU; obtains the first optical signal of the first wavelength and the optical signal from the optical signal. The second optical signal of the second wavelength converts the first optical signal into a data frame, and extracts message data from the data frame; encapsulates the message data into a management message belonging to a management service; The included first port sends the management message to the management network; converts the second optical signal into a service message, and sends the service message to the metropolitan area network through the included second port. Since the first wavelength and the second wavelength are different, different wavelengths correspond to different channels between the two ONUs, so that the first optical signal corresponding to the management service and the second optical signal corresponding to the pipe service are divided between the two ONUs. Transmission on the channel, so that the management channel established based on the two channels for transmission management services and the service channel for transmission pipeline services can be separated, so that the abnormality of the service channel will not affect the normal transmission of management services.

In a possible implementation of the first aspect, the first ONU generates a message header field of a preset type according to the message data; adds the message header field to the message data to obtain Management messages. In this way, when the management message is transmitted on the optical fiber, there is no need to transmit a preset type of message header field, which can reduce the amount of transmitted data.

In a possible implementation of the first aspect, the data frame is a first optical transport network OTN data frame, and the first ONU extracts the message data from the target field of the first OTN data frame . The OTN data frame is a data frame transmitted on the optical supervisory channel between two ONUs, so the message data is placed in the first OTN data frame, so that the optical supervisory channel can be used to transmit the message data, and the service report The text can be transmitted on the optical service channel between the two ONUs, so that the management service and the pipe service are transmitted on two different channels, and then used for the management channel of the transmission management service and the service channel for the transmission of the pipe service Be separated.

In a possible implementation manner of the first aspect, the preset type of packet header field is a check field.

In the second aspect, this application provides a communication device for executing the first aspect or the method in any one of the possible implementation manners of the first aspect. Specifically, the device includes a unit for executing the first aspect or any one of the possible implementation manners of the first aspect.

In a third aspect, the present application provides a computer program product, the computer program product includes a computer program stored in a computer-readable storage medium, and the calculation program is loaded by a processor to implement the first aspect, or Any possible implementation of the first aspect.

In a fourth aspect, this application provides a non-volatile computer-readable storage medium for storing a computer program, which is loaded by a processor to execute the first aspect or any possible implementation of the first aspect. Way of the instruction.

In a fifth aspect, this application provides a chip that includes a programmable logic circuit and/or program instructions, which is used to implement the first aspect or any possible implementation manner of the first aspect when the chip is running method.

In a sixth aspect, the present application provides a communication system, the system includes a first optical network node ONU and a second ONU; in the system, the first ONU is configured to receive through the first port included in the system. A management message from a management network in its area and a service message received from a metropolitan area network in its area through a second port included therein, the management message belongs to a management service, and the service message belongs to a user service Generating a data frame, the data frame including the message data in the management message; converting the data frame into the first optical signal of the first wavelength and converting the service message into the first optical signal of the second wavelength Two optical signals, the first wavelength is different from the second wavelength; the first optical signal and the second optical signal are combined into one optical signal, and the first optical seat number is sent to the second ONU ；

The second ONU is configured to obtain a first optical signal of a first wavelength and a second optical signal of a second wavelength from the optical signal, convert the first optical signal into a data frame, and obtain the data from the data The message data is extracted from the frame, the message data is encapsulated into a management message, and the management message is sent to the management network in the area where it includes the first port; the second optical signal is converted into The service message is sent to the metropolitan area network in the area where the service message is located through the second port included in the service message.

Because the first wavelength and the second wavelength are different, the different wavelengths correspond to different channels between the first ONU and the second ONU, and because the first ONU receives management services and user services through two different ports, the first ONU and the second Between the two ONUs, the first optical signal corresponding to the management service and the second optical signal corresponding to the user service are transmitted on different channels, so that the management channel established based on the two channels for transmitting the management service and the user The service channel of the service can be separated, so that the abnormality of the service channel will not affect the normal transmission of the management service.

BRIEF DESCRIPTION

FIG. 1 is a schematic structural diagram of a network architecture provided by an embodiment of the present application;

Figure 2 is a schematic structural diagram of an ONU provided by an embodiment of the present application;

FIG. 3 is a schematic structural diagram of another network architecture provided by an embodiment of the present application;

Figure 4 is a schematic structural diagram of another ONU provided by an embodiment of the present application;

Figure 5 is a schematic structural diagram of another ONU provided by an embodiment of the present application;

FIG. 6 is a flowchart of a communication method provided by an embodiment of the present application;

FIG. 7 is a schematic structural diagram of another network architecture provided by an embodiment of the present application;

FIG. 8 is a schematic structural diagram of another communication method provided by an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 10 is a schematic structural diagram of an SC2 board provided by an embodiment of the present application.

detailed description

The implementation manners of the present application will be described in further detail below in conjunction with the accompanying drawings.

Metropolitan area networks and ONUs are deployed in different areas, and the area can be a city. The metropolitan area network in each area is connected to the ONU, and the ONUs in each area are connected by optical fibers, so that metropolitan area networks in different areas are interconnected. For example, referring to Figure 1, the metropolitan area network 1a deployed in area 1 is connected to the ONU1b deployed in area 1, the metropolitan area network 2a deployed in area 2 is connected to the ONU 2b deployed in area 2, and ONU1b and ONU2b are connected by optical fiber .

A computer room can be deployed in the area, and the equipment in the computer room belongs to a local area network, which is connected to the metropolitan area network deployed in the area where the computer room is located.

Still referring to Figure 1, taking area 1 in Figure 1 as an example, in order to manage the equipment in the computer room, the equipment in the computer room has a management interface, and the equipment is connected to the management switch 1c through the management interface, and the management switch 1c has Monitoring interface, the management switch 1c can be connected to the ONU 1b in the area where the computer room is located through the monitoring interface, the equipment in the computer room and the management switch 1c belong to a management network 1d, through which the equipment in the computer room can be operated management.

Optionally, the management switch 1c may be an ordinary switch. Since the switch belongs to a switch in the management network, it may also be called a management switch.

Since the management networks in different regions are relatively scattered, it brings a lot of inconvenience to the management of the management networks in different regions. In order to solve this inconvenience problem, the management networks of different areas can be interconnected, so that a controller can be set up in the management network of one area, and the controller can send management services to the management network of different areas to realize the The regional management network performs unified management, thereby solving the inconvenience problem.

In order to be able to interconnect management networks in different areas, a first port for transmitting management services and a second port for transmitting user services are provided in the ONU in each area. For each area, the area includes a management network, a metropolitan area network, and an ONU. The second port of the ONU is connected to the metropolitan area network. It is between the monitoring interface of the management switch belonging to the management network and the first port of the ONU. The physical line is used to connect between the two areas, and the physical line does not pass through the metropolitan area network. In this way, for the management switches in any two areas, since the ONUs in the two areas are connected by optical fibers, the management switches in each area are connected to the ONUs. The physical line is used to connect, so that a channel for transmitting management services can be established between the two management switches to interconnect the management networks of the two different areas.

Optionally, the first port may be an Ethernet interface or the like.

For example, still referring to Figure 1, a computer room is deployed in area 1. Each device in the computer room is connected to the management switch 1c through its management interface. The devices in the computer room and the management switch 1c belong to the management network 1d, which is in the area 1. The deployed ONU1b is provided with a first port for transmitting management services and a second port for transmitting user services. A physical line is used between the monitoring interface of the management switch 1c and the first port of ONU1b, and the physical line does not pass through the area. The metropolitan area network 1a in 1 and the metropolitan area network 1a in area 1 are connected to the second port of the ONU 1b. The computer room is deployed in area 2, each device in the computer room is connected to the management switch 2c through its management interface, each device in the computer room and the management switch 2c belong to the management network 2d, and the ONU 2b deployed in the area 2 is set up for transmission The first port for management services and the second port for transmitting user services are connected by a physical line between the monitoring interface of the management switch 2c and the first port of ONU 2b, and the physical line does not pass through the metropolitan area network 2a in area 2. , The metropolitan area network 2a in area 2 is connected to the second port of the ONU 2b, thus connecting the management network 1d and the management network 2d. In this way, a channel for transmitting management services can be established between the management switch 1c and the management switch 2c. The channel includes the channel between the management switch 1c and ONU1b, the channel between ONU1b and ONU2b, and the channel between ONU2b and the management switch 2c. Channel. The controller 3 is deployed in the management network 1d, and the controller 3 can send management services to the management network 2d through this channel, so that the controller 3 can perform unified management of the management network 1d and the management network 2d; or, in the management network 2d The controller 3 (not shown in the figure) is deployed, and the controller 3 can send management services to the management network 1d through the channel, so that the controller 3 can perform unified management on the management network 1d and the management network 2d.

Referring to Figure 2, for each of the ONU 1b and ONU 2b described above, the ONU includes a monitoring unit 1, an optical fiber interface unit 2, an optical cross unit 3, and a service access unit 4. The monitoring unit 1 is provided with a transmission management service The service access unit 4 includes at least one second port for transmitting user services;

The optical fiber interface unit 2 is connected to the monitoring unit 1 and the optical crossover unit 3 respectively, and the optical crossover unit 3 is also connected to each second port in the service access unit 4. The optical fiber interface unit 2 is also connected to other ONUs through optical fibers.

Optionally, when the ONU sends optical signals to other ONUs, the monitoring unit 1 is configured to receive, through the first port, a management message sent by a management network in the area where the ONU is located, and extract message data from the management message , Generating a data frame including the message data, converting the data frame into a first optical signal of the first wavelength, and sending the first optical signal to the optical fiber interface unit 2;

The optical cross unit 3 is configured to receive a service message from the metropolitan area network in the area where the ONU is located through the second port included in the service access unit 4, and convert the service message into a second optical signal of the second wavelength, Sending a second optical signal to the optical fiber interface unit 2, where the first wavelength and the second wavelength are different;

The optical fiber receiving port unit 2 is used to receive the first optical signal and the second optical signal, and send the first optical signal and the second signal to other ONUs on the optical fiber.

Each second port in the service access unit 4 corresponds to a second wavelength, the second wavelength corresponding to each second port is different, and the second wavelength corresponding to each second port is different from the first wavelength. When the optical cross unit 3 receives the service packet sent by the metropolitan area network through the second port included in the service access unit 4, it determines the second wavelength corresponding to the second port, and determines the service packet according to the determined second wavelength. Converted into a second optical signal.

A user service is a service initiated by a user in a metropolitan area network. For example, when a user needs to download a video, the initiated download service is a user service, and the service message may be a message including video data of the video. The management service is a service used to manage and control devices in the network. There may be multiple management services in the management network, and each management service has its own management message. For example, for a management service used to control devices in the network, the management messages belonging to the management service may be control messages used to control the devices in the network. For another example, for a management service used to authenticate devices in the network, the management messages belonging to the management service may be management messages used to authenticate the devices.

Optionally, when the ONU receives optical signals sent by other ONUs, the optical fiber interface unit 2 is configured to receive optical signals sent by other ONUs from the optical fiber, and obtain the first optical signal of the first wavelength and the first optical signal from the optical signal. The second optical signal of two wavelengths sends the first optical signal to the monitoring unit 1 and the second optical signal to the optical cross unit 3;

The monitoring unit 1 is used to convert the first optical signal into a data frame, extract message data from the data frame, encapsulate the message data into a management message belonging to a management service, and send it to the area where the ONU is located through the first port The internal management network sends the management message.

The optical cross unit 3 is configured to convert the second optical signal into a service packet belonging to the user service, determine the second port corresponding to the second wavelength of the second optical signal, and pass the second port in the service access unit 4 Send the service message to the metropolitan area network in the area where the ONU is located.

The header of the management message can be a virtual local area network (VLAN) message header or an internet protocol address (IP) message header, and the message header of the management message includes a priority field. The priority field includes the priority of the management message.

For any two ONUs in the network architecture shown in Figure 1, for example, see ONU1b and ONU2b shown in Figure 3. The first port of the monitoring unit 11 of ONU1b and the monitoring interface of the management switch 1c deployed in area 1 where ONU1b is located Use physical lines to connect each other. Each second port included in the service access unit 41 of ONU1b is connected to the metropolitan area network 1a deployed in area 1 where ONU1b is located. The optical fiber interface unit 21 of ONU1b and the optical fiber interface unit 22 of ONU2b are used between Fiber optic connection. The first port of the monitoring unit 12 of the ONU2b is connected with the monitoring interface of the management switch 2c deployed in the area 2 where the ONU2b is located. Each second port included in the service access unit 42 of the ONU2b is connected to the area 2 where the ONU2b is located. The deployed metropolitan area network 2a is connected.

There is an optical monitoring channel between the monitoring unit 11 of ONU1b and the monitoring unit 12 of ONU2b. The optical monitoring channel includes the connection between the monitoring unit 11 of ONU1b and the optical fiber interface unit 21, and the optical fiber interface unit 21 of ONU1b and the optical fiber interface of ONU2b. The optical monitoring channel established on the optical fiber between the units 22, the connection between the optical fiber interface unit 22 of the ONU 2b and the monitoring unit 12.

Wherein, the monitoring unit 11 of ONU1b sends data frames to the monitoring unit 12 of ONU2b through the optical monitoring channel, and/or the monitoring unit 12 of ONU2b sends data frames to the monitoring unit 11 of ONU1b through the optical monitoring channel to monitor ONU1b and ONU2b Whether the optical fiber between is normal.

Optionally, a management channel for transmitting management services between the management switch 1c and the management switch 2c can be established based on the optical monitoring channel.

The management channel between the management switch 1c and the management switch 2c for transmitting management services may include the channel between the management switch 1c and the monitoring unit 11 of the ONU1b, and the optical monitoring between the monitoring unit 11 of the ONU1b and the monitoring unit 12 of the ONU2b. Channel, the channel between the monitoring unit 12 of the ONU 2b and the management switch 2c.

The service channel used to transmit user services between the equipment in area 1 and the equipment in area 2 may include the channel between the equipment in area 1 and the optical cross unit 31 of ONU1b, the optical cross unit 31 of ONU1b and the optical cross unit 31 of ONU2b. The optical service channel between the optical crossover units 32, the channel between the optical crossover unit 32 of the ONU 2b and the equipment in the area 2.

The optical service channel between the optical crossover unit 31 of ONU1b and the optical crossover unit 32 of ONU2b includes the connection between the optical crossover unit 31 of ONU1b and the optical fiber interface unit 21, the optical fiber interface unit 21 of ONU1b and the optical fiber interface unit 22 of ONU2b. The connection between the optical service channel established on the optical fiber, the optical fiber interface unit 22 of the ONU 2b and the optical cross unit 32.

The optical service channel and the optical supervisory channel established on the optical fiber are two different channels. Different optical signal wavelengths are used on the optical fiber to distinguish the two channels. The optical supervisory channel corresponds to the first wavelength, and the optical service channel corresponds to the second. The wavelength, the first wavelength and the second wavelength are different, thereby realizing the decoupling of the service channel and the management channel.

In this way, when transmitting management services and user services, the monitoring unit 11 of the ONU 1b receives the management message sent by the management switch 1c through the first port that belongs to the management service, and extracts the message data from the management message, and generates The data frame of the message data is converted into the first optical signal of the first wavelength, and the first optical signal is sent to the optical fiber interface unit 21 of the ONU1b; the optical cross unit 31 of the ONU1b passes through the service access unit 41 in the ONU1b Receive service packets belonging to user services sent by devices in area 1 from the metropolitan area network 1a in area 1, convert the service packets into a second optical signal of the second wavelength, and send the first optical signal to the optical fiber interface unit 21 of ONU 1b Two optical signals; the optical fiber receiving port unit 21 of ONU1b sends the first optical signal and the second optical signal on the optical fiber. Wherein, the management message does not pass through the metropolitan area network 1a in the area 1, but is transmitted to the ONU 1b through the physical line between the management switch 1c and the monitoring unit 11 of the ONU 1b.

The optical fiber receiving port unit 22 of ONU2b receives the optical signal on the optical fiber, distinguishes the first optical signal of the first wavelength and the second optical signal of the second wavelength from the optical signal, and sends the first optical signal to the monitoring unit 12 of ONU2b , Send the second optical signal to the optical cross unit 32 of ONU2b; the monitoring unit 12 of ONU2b converts the first optical signal into a data frame, extracts the message data from the data frame, and encapsulates the message data into a management message. The first port sends the management message to the management switch 2c; the optical cross unit 32 of the ONU 2c converts the second optical signal into a service message, determines the second port corresponding to the second wavelength of the second optical signal, and passes the service in the ONU 2b The second port included in the access unit 42 sends the service packet to the device in area 2. Wherein, the management message sent by the ONU 2b to the management switch 2c does not pass through the metropolitan area network 2a of the area 2, and the management message is transmitted to the management switch 2c via the physical line between the monitoring unit 12 of the ONU 2b and the management switch 2c.

Optionally, referring to FIG. 4, for each ONU of the ONU 1b and ONU 2b, the monitoring unit 1 in the ONU may include a signal processing unit 111, a data frame generating unit 112, a monitoring signal generating unit 113, a codec unit 114, and an optical Conversion unit 115; the optical fiber interface unit 2 in the ONU includes a multiplexing unit 211 and a demultiplexing unit 212.

The signal processing unit 111 is provided with a first port and connected to the data frame generating unit 112. The data frame generating unit 112 is also connected to the monitoring signal generating unit 113 and the codec unit 114 respectively, and the codec unit 114 is also connected to the optical conversion unit 115 The optical conversion unit 115 is also connected to the multiplexing unit 211 and the demultiplexing unit 212 in the optical fiber interface unit 2. Both the multiplexing unit 211 and the demultiplexing unit 212 are connected to the optical cross unit 2.

Optionally, when the ONU is the sender of the optical signal, the signal processing unit 111 is configured to receive a management message through the first port, and remove a preset type of message header field from the message header of the management message, The message data in the management message is obtained, and the message data is sent to the data frame generating unit 112. Optionally, the message header field of the preset type may be a check field or the like.

The data frame generating unit 112 is configured to generate a data frame including the message data, and send the data frame to the codec unit 114.

The encoding and decoding unit 114 is configured to encode the data frame into an electrical signal, and send the electrical signal to the optical conversion unit 115;

The optical conversion unit 115 is configured to convert the electrical signal into a first optical signal of the first wavelength, and send the first optical signal to the multiplexing unit 211 of the optical fiber interface unit 2.

The monitoring signal generating unit 113 is used to periodically generate monitoring information and send the monitoring information to the data frame generating unit 112. The data frame generating unit 112 is used to first generate a data frame including the monitoring information, and then add to the data frame The message data is sent to the codec unit 114 with the added data frame.

Optionally, the data frame may be a first optical transport network (optical transport network, OTN) data frame.

Optionally, the data frame generating unit 112 is configured to receive the monitoring information periodically generated by the monitoring signal generating unit 113, generate a second OTN data frame including the monitoring information, and add the message data to the target of the second OTN data frame In the field, the first OTN data frame is obtained.

Optionally, the target field of the second OTN data frame may be the 675th byte to the 3824th byte in the second OTN data frame.

The multiplexing unit 211 is configured to receive the first optical signal from the optical conversion unit 115 and/or receive the second optical signal from the optical cross unit 3, and send the first optical signal and/or the second optical signal on the optical fiber.

Optionally, when the multiplexing unit 21 receives the first optical signal and the second optical signal at the same time, it may combine the first optical signal and the second optical signal into one optical signal, and send the optical signal on the optical fiber.

Optionally, when the ONU is the receiver of the optical signal, the demultiplexing unit 212 is configured to receive the optical signal from the optical fiber, and distinguish the first optical signal of the first wavelength and/or the optical signal of the second wavelength from the optical signal. The second optical signal sends the first optical signal to the optical conversion unit 115 when the first optical signal is dropped, and sends the second optical signal to the optical cross unit 2 when the second optical signal is dropped.

The optical conversion unit 115 is configured to receive the first optical signal from the demultiplexing unit 212, convert the first optical signal into an electrical signal, and send the electrical signal to the codec unit 114;

The encoding and decoding unit 114 is configured to decode the electrical signal to obtain a data frame, and send the data frame to the data frame generating unit 112, and the data frame includes the message data of the management message;

The data frame generating unit 112 is configured to extract the message data from the data frame, and send the message data to the signal processing unit 111;

The signal processing unit 111 is configured to encapsulate the message data into a management message, and send the management message to the management network through the first port.

Optionally, referring to FIG. 4, the ONU may also include at least one cache queue 116, each cache queue 116 is connected to the signal processing unit 111 and the data frame generation unit 112, and each cache queue 116 corresponds to a message priority , The priority corresponding to each cache queue 116 is different;

The message header of the management message may be a VLAN message header or an IP message header. The signal processing unit 111 and the data frame generating unit 112 both support identifying the priority field in the VLAN message header and the IP message header.

When the signal processing unit 111 receives the management message, it removes the preset message header field in the management message to obtain message data. The message data also includes other message headers other than the preset message header field. Field, the other message header fields include a priority field, so that the signal processing unit 111 can identify the priority field in the message data, extract the priority from the priority field, and buffer the message data to the priority field. In the cache queue 116 corresponding to the level, the data frame generation unit 112 can select a cache queue according to the priority of each cache queue 116 through a preset strategy, and read the message data from the selected cache queue, based on the message data Generate a data frame. or,

When the data frame generating unit 112 extracts the message data from the data frame, it identifies the priority field in the message data, extracts the priority from the priority field, and caches the message data corresponding to the priority. In the cache queue 116, the signal processing unit 111 can select a cache queue according to the priority of each cache queue 116 through a preset strategy, read the message data from the selected cache queue, and encapsulate the message data into a management message. Text.

The preset strategy can make the signal processing unit 111 or the data frame generating unit 112 have a higher priority corresponding to the buffer queue, the greater the probability of selecting the buffer queue, so that the signal processing unit 111 or the data frame generating unit 112 Each time a buffer queue is selected, the higher the priority of the buffer queue, the greater the probability of being selected, so that the message data of the high-priority management message is sent first.

Optionally, referring to Fig. 5, the ONU further includes a management unit 5, which is used to configure the second wavelength corresponding to each second port in the service access unit 4 in the optical cross unit 3, and in the signal processing A preset strategy is configured in the unit 111 and the data frame generating unit 112.

The embodiment of the present application provides a communication method, which can be applied to the architecture shown in FIG. 1. In this architecture, ONUs deployed in any two different areas are called ONU1b and ONU2b, respectively. ONU1b is provided with a first port and at least one second port. ONU1b is connected to the management network 1d in area 1 where ONU1b is located through the first port, and is connected to the metropolitan area network 1a in area 1 through at least one second port. There is a first port and at least one second port. The ONU 2b is connected to the management network 2d in the area 2 where the ONU 2b is located through the first port, and is connected to the metropolitan area network 2a in the area 2 through at least one second port.

In order to be able to uniformly manage the management network 1d and the management network 2d, the controller 3 may be provided in the management network 1d or the management network 2d. For example, a controller 3 can be provided in the management network 1d, and the controller 3 can establish a management channel between the management network 1d and the management network 2d. The controller 3 can directly send management messages to devices in the management network 1d. In order to realize the management of the devices in the management network 1d, and the management message can be sent to the devices in the management network 2d through the management channel, so as to realize the management of the devices in the management network 2d. Alternatively, other devices in the management network 1d may also send management messages to the management network 2d through the management channel, or devices in the management network 2d may also send management messages to the management network 1d through the management channel.

The management channel can be a transmission control protocol (TCP) connection, a user datagram protocol (UDP) connection or a hypertext between the management switch 1c of the management network 1d and the management switch 2c of the management network 2d Transfer protocol (hypertext transfer protocol, Http) connection, etc. The management network 1d includes a management switch 1c and devices connected to the management switch 1c; the management network 2d includes a management switch 2c and devices connected to the management switch 2c. The management channel includes the channel between the management switch 1c and the ONU 1b, the optical monitoring channel between the ONU 1b and the ONU 2b, and the channel between the ONU 2b and the management switch 2c.

After the controller 3 has established the management channel, it can send a management message to the management network 2d through the following communication method to realize the management of the management network 2d. Referring to Figure 6, the method includes:

Step 301: The ONU 1b receives the management message sent by the management network 1d in the area 1 through the first port, and receives the service message from the metropolitan area network 1a in the area 1 through the second port.

The management message belongs to a management service, the service message belongs to a user service, and the service message is sent by a device connected to the metropolitan area network 1a of area 1.

The controller 3 in the management network 1d or other devices in the management network 1d can send a management message to the management switch 1c, and the management switch 1c forwards the management message to the ONU 1b. The management message forwarded by the management switch 1c to the ONU 1b does not pass through the metropolitan area network 1a in the area 1, and the management message is directly transmitted to the ONU 1b through the physical line between the management switch 1c and the ONU 1b.

Referring to FIG. 7, the monitoring unit 11 in the ONU 1b includes a signal processing unit 11a, the signal processing unit 11a is provided with a first port, and the signal processing unit 11a receives the management message through the first port.

Still referring to FIG. 7, the ONU 1b includes a service access unit 41 and an optical crossover unit 31. The service access unit 41 includes at least one second port, and the optical crossover unit 31 receives the service packet through the second port in the service access unit 41.

Step 302: The ONU 1b generates a data frame, and the data frame includes the message data in the management message.

ONU1b will periodically obtain monitoring information and generate a data frame including the monitoring information. The monitoring information is used to monitor the optical fiber connection between ONU1b and ONU2b.

In this step, ONU1b can remove the preset message header field from the management message to obtain message data. After generating a data frame including the monitoring information, the message data can be added to the data frame To make the data frame include the message data in the management message.

Optionally, the target field may be a field from the 675th byte to the 3824th byte in the data frame.

Optionally, the data frame may be an OTN data frame.

Referring to FIG. 7, the monitoring unit 11 of the ONU 1b further includes at least one buffer queue 116a, a data frame generating unit 112a, and a monitoring signal generating unit 113a. Each buffer queue 116a corresponds to a message priority. The signal processing unit 111a is provided with a first port.

When the signal processing unit 111a receives the management message, it can remove the preset message header field from the management message to obtain message data, identify the priority field in the message data, and extract it from the priority field Priority, the message data is buffered in the buffer queue corresponding to the priority.

Optionally, the preset packet header field may be a check field.

The monitoring signal generating unit 113a may periodically obtain monitoring information, the data frame generating unit 112a may obtain the monitoring information, generate a second OTN data frame including the monitoring information, and select one from the at least one buffer queue 116a according to a preset strategy Cache queue, read the message data from the selected cache queue, add the message data to the field from the 675th byte to the 3824th byte of the second OTN data frame to obtain the first OTN data frame, that is The data frame generated by the ONU1b may be the first OTN data frame.

Step 303: The ONU1b converts the data frame into a first optical signal of a first wavelength.

Referring to Figure 7, the monitoring unit 11 of the ONU1b further includes a codec unit 114a and an optical conversion unit 115a. The ONU1b also includes an optical fiber interface unit 21. The data frame generating unit 112a can send the first OTN data frame to the codec unit 114a after obtaining the first OTN data frame. An OTN data frame; the codec unit 114a converts the first OTN data frame into an electrical signal, and sends the electrical signal to the optical conversion unit 115a; the optical conversion unit 115a converts the optical signal into a first optical signal of the first wavelength, The multiplexing unit 211a included in the optical fiber interface unit 21 transmits the first optical signal.

Step 304: The ONU 1b converts the service message into a second optical signal of a second wavelength, where the first wavelength and the second wavelength are different.

When the optical cross unit 31 included in the ONU 1b receives the service message through the second port in the service access unit 41, it determines the second wavelength corresponding to the second port, and converts the service message into the first wavelength according to the second wavelength. The second optical signal is sent to the multiplexing unit 211a included in the optical fiber interface unit 21.

Optionally, step 304 and the above-mentioned steps 302 and 303 may be performed at the same time, or steps 302 and 303 may be performed first, and then step 304 may be performed, or step 304 may be performed first, and then steps 302 and 303 may be performed.

Step 305: ONU1b sends the first optical signal and the second optical signal to ONU2b on the optical fiber.

The multiplexing unit 211a included in the optical fiber interface unit 21 receives the first optical signal and the second optical signal, and sends the first optical signal and the second optical signal to the ONU 2b on the optical fiber.

Optionally, if the multiplexing unit 211a receives the first optical signal and the second optical signal at the same time, the multiplexing unit 211a combines the first optical signal and the second optical signal into one optical signal, and sends the optical signal to the ONU 2b on the optical fiber. signal. If the multiplexing unit 211a receives the first optical signal and the second optical signal at different times, when the multiplexing unit 211a receives the first optical signal, it sends the first optical signal to the ONU 2b on the optical fiber. When signal, the second optical signal is sent to ONU2b on the optical fiber.

For ONU2b, ONU2b can receive the optical signal sent by ONU1b on the optical fiber, obtain the first optical signal of the first wavelength and the second optical signal of the second wavelength from the optical signal, and convert the first optical signal into a data frame, The message data is extracted from the data frame, the message data is encapsulated into a management message, and the management message is sent to the management network 2d of area 2 through the included first port; the second optical signal is converted into a service message , Sending the service message to the metropolitan area network 2a of area 2 through the second port included therein.

The optical signal may be a first optical signal, a second optical signal sent by the ONU 1b, or a combination of the first optical signal and the second optical signal.

Optionally, referring to FIG. 7, the ONU 2b includes a monitoring unit 12, an optical fiber interface unit 22, an optical crossover unit 32, and a service access unit 42, the service access unit 42 includes at least one second port, and the monitoring unit 12 includes an optical conversion unit 115b , The encoding and decoding unit 114b, the data frame generating unit 112b, at least one buffer queue 116b and the signal processing unit 111b, etc. The signal processing unit 11b is provided with a first port.

The demultiplexing unit 212b included in the optical fiber interface unit 22 receives the optical signal sent by the ONU1b from the optical fiber, and if the optical signal is a combination of the first optical signal and the second optical signal, it is distinguished from the optical signal. The first optical signal of the first wavelength and the second optical signal of the second wavelength are sent to the optical conversion unit 115b and the second optical signal is sent to the optical cross unit 32; if the optical signal is the first optical signal of the first wavelength For an optical signal, the first optical signal is sent to the optical conversion unit 115b; if the optical signal is a second optical signal of the second wavelength, the second optical signal is sent to the optical cross unit 32.

The optical conversion unit 115b can convert the first optical signal into an electrical signal and send the electrical signal to the codec unit 114b; the codec unit 114b converts the electrical signal into a data frame, which can be the first OTN data frame, The data frame generating unit 112b sends the first OTN data frame; the data frame generating unit 112b can extract message data from the first OTN data frame, identify the priority field in the message data, and extract the priority in the priority field, The message data is cached in the cache queue corresponding to the priority; the signal processing unit 111b can select a cache queue according to the priority corresponding to each cache queue through a preset strategy, and obtain the message data from the selected cache queue , Generate a preset type of message header field according to the message data, add the message header field to the message data to obtain a management message, and send the management message to the management network 2d of area 2 through the first port .

Optionally, when the preset type of message header field is a check field, a cyclic redundancy check (CRC) value of the message data may be calculated, and the CRC value may be used as the check field.

Optionally, the optical cross unit 32 receives the second optical signal, converts the second optical signal into a service packet, determines the second port corresponding to the second wavelength of the second optical signal, and uses the service access unit 42 to include the The second port sends the service message to the metropolitan area network 2a in area 2.

Optionally, ONU2b may also send an optical signal to ONU1b on an optical fiber. The optical signal may be a first optical signal of a first wavelength, a second optical signal of a second wavelength, or a combination of the first optical signal and the second optical signal. All the way light signal. The implementation process of ONU2b sending optical signals is the same as the implementation process of ONU1b sending optical signals, and will not be described in detail here. Referring to Figure 8, ONU1b can also receive optical signals through the following process.

Step 401: ONU 1b receives the optical signal sent by ONU 2b on the optical fiber, and obtains the first optical signal of the first wavelength and the second optical signal of the second wavelength from the optical signal.

The optical signal may be a first optical signal of a first wavelength, a second optical signal of a second wavelength, or a combination of the first optical signal and the second optical signal.

Referring to FIG. 7, the demultiplexing unit 212a included in the optical fiber interface unit 21 receives the optical signal sent by the ONU 2b from the optical fiber. If the optical signal is a combination of the first optical signal and the second optical signal, the optical signal is Distinguish the first optical signal of the first wavelength and the second optical signal of the second wavelength, and send the first optical signal to the optical conversion unit 115a and the second optical signal to the optical cross unit 31; if the optical signal is the first wavelength If the optical signal is the second optical signal of the second wavelength, then the second optical signal is sent to the optical cross unit 31.

Step 402: ONU 1b converts the first optical signal into a data frame, extracts message data from the data frame, encapsulates the message data into a management message belonging to a management service, and sends it to the management network 1d in area 1 through the first port Send the management message.

Referring to FIG. 7, the optical conversion unit 115a may convert the first optical signal into an electrical signal, and send the electrical signal to the codec unit 114a; the codec unit 114a converts the electrical signal into a first OTN data frame, and sends the electrical signal to the data frame generation unit. 112a sends the first OTN data frame; the data frame generating unit 112a extracts the message data from the first data frame, identifies the priority field in the message data, extracts the priority in the priority field, and then the message data Cache to the cache queue corresponding to the priority; the signal processing unit 11a selects a cache queue through a preset strategy according to the priority corresponding to each cache queue, reads the message data from the selected cache queue, and reads the message data according to the message The data generates a message header field of a preset type, adds the message header field to the message data to obtain a management message, and sends the management message to the management network 1d in area 1 through the first port.

Step 403: The ONU 1b converts the second optical signal into a service message, and sends the service message to the metropolitan area network 1a of area 1 through the second port.

Optionally, the optical cross module 31 receives the second optical signal, converts the second optical signal into a service packet, determines the second port corresponding to the second wavelength of the second optical signal, and passes the second port in the service access unit 41 The second port sends the service message to the metropolitan area network 1a in area 1.

Optionally, step 402 and the aforementioned step 403 may be performed at the same time, or step 402 may be performed first, and then step 403 may be performed, or step 403 may be performed first, and then step 402 may be performed.

In the embodiment of the present application, ONU1b includes a first port and a second port, and receives management messages sent by the management network in area 1 through the first port and receives service messages from the metropolitan area network in area 1 through the second port. , Convert the message data in the management message into the first optical signal of the first wavelength, and convert the service message into the second optical signal of the second wavelength, and send the first optical signal and the second optical signal on the optical fiber . ONU2b receives the optical signal from the optical fiber, distinguishes the first optical signal of the first wavelength and the second optical signal of the second wavelength from the optical signal, converts the first optical signal into message data, and encapsulates the message data Convert the second optical signal into a service message, and then send the management message to the management network of area 2 through its first port, and send it to the metropolitan area network of area 2 through its second port. Send business messages. Since the first wavelength is different from the second wavelength, different wavelengths correspond to different channels between ONU1b and ONU2b, so that the first optical signal corresponding to the management service and the second optical signal corresponding to the user service are divided into different channels for transmission on the ONU1b side In this way, the management channel established based on the two channels for transmitting management services and the service channel for transmitting user services can be separated, so that the abnormality of the service channel will not affect the normal transmission of management services.

Referring to FIG. 9, FIG. 9 is a schematic diagram of a communication device 500 provided by an embodiment of the application. The device 500 includes:

Bi-directional optical supervisory channel board (SC2) single board 501, fiber interface unit (FIU) single board 502, universal cross connect board (Universal Cross Connect Board, UXCT) single board 503 and The branch service processing board (TTX) board 504, the SC2 board 501 is provided with a first port, and the TTX board 504 is provided with at least one second port.

The FIU single board 502 is connected to the SC2 single board 501 and the UXCT single board 503, respectively, and the UXCT single board 503 is also connected to the TTX single board 504.

The device 500 is located in an area, the first port in the SC2 board 501 is connected to the management network in the area, and each second port in the TTX board 504 is connected to the metropolitan area network in the area, and the FIU board 502 is connected to ONUs in other areas through optical fibers.

Optionally, the first port may be an Ethernet interface.

The device 500 is a device with a hardware structure and can be used to implement the functional units in the ONU described in FIG. 2, FIG. 4, and FIG. 5. For example, those skilled in the art can imagine that the monitoring unit 1 in the ONU shown in Figures 2, 4, and 5 can be implemented using the SC2 single board 501, and the optical fiber interface unit 2 in the ONU shown in Figures 2, 4, and 5 The FIU board 502 can be used for implementation. The optical cross unit 3 in the ONU shown in Figure 2, Figure 4 and Figure 5 can be implemented by the UXCT single board 503. The service interface in the ONU shown in Figure 2, Figure 4 and Figure 5 The input unit 4 can be implemented using a TTX single board 504.

Optionally, referring to FIG. 9, the device 500 may further include a system control and communication (system control and communication board, SCC) single board 505, and the management unit 5 shown in FIG. 5 may be implemented using the SCC single board 505.

Optionally, referring to FIG. 10, the SC2 single board 501 may include a port physical layer (PHY) chip 5011, a first processor 5012, a second processor 5013, and forward error correction (FEC). The chip 5014 and the memory 5015, and the PHY chip 5011 is provided with a first port.

The PHY chip 5011, the first processor 5012, the second processor 5013, the FEC chip 5014, and the memory 5015 may be integrated on a single board (not shown in the figure). The PHY chip 5011 is connected to the memory 5015, the memory 5015 is also connected to the first processor 5012, the first processor 5012 is also connected to the second processor 5013 and the FEC chip 5014 respectively, and the FEC chip 5014 is also connected to the FIU board 502.

For the monitoring unit 1 in the ONU shown in FIGS. 4 and 5, the signal processing unit 111 in the monitoring unit 1 can be implemented using a PHY chip 5011, and the data frame generating unit 112 can be implemented using the first processor 5012, and the monitoring signal The generating unit 113 may use the second processor 5013, the encoding and decoding unit 114 may be implemented by using an FEC chip 5014, and at least one cache queue 116 may be located in the memory 5015. The light conversion unit 115 is a common hardware component in the field. In order to be concise and clear in the implementation, this embodiment does not need to introduce its structure.

Optionally, the first processor 5012 may be a central processing unit (Central Processing Unit, CPU) or a field programmable gate array (FPGA), etc., and the second processor 5013 may be a CPU or the like.

The model of the PHY chip 5011 can be RTL8211, and the model of the FEC chip 5014 can be IXF30005.

A person of ordinary skill in the art can understand that all or part of the steps in the above embodiments can be implemented by hardware, or by a program instructing related hardware to complete. The program can be stored in a computer-readable storage medium. The storage medium mentioned can be a read-only memory, a magnetic disk or an optical disk, etc.

The above are only optional embodiments of this application and are not intended to limit this application. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of this application shall be included in the protection of this application Within range.

Claims (13)

1. A communication method, characterized in that the method includes:

   The first optical network node ONU receives a management message from the management network through its first port and receives a service message from the metropolitan area network through its second port. The management message belongs to a management service. Business messages belong to user services;

   Generating a data frame by the first ONU, the data frame including message data in the management message;

   The first ONU converts the data frame into a first optical signal of a first wavelength and converts the service packet into a second optical signal of a second wavelength, where the first wavelength is different from the second wavelength ；

   The first ONU sends the first optical signal and the second optical signal to the second ONU.
2. The method according to claim 1, wherein the data frame is a first optical transport network OTN data frame, and generating the data frame by the ONU comprises:

   Generating a second OTN data frame by the first ONU;

   The first ONU adds the message data in the management message to the target field of the second OTN data frame to obtain the first OTN data frame.
3. The method according to claim 1 or 2, wherein before the first ONU generates the data frame, the method further comprises:

   The first ONU removes the message header field of the preset type from the message header of the management message to obtain message data in the management message.
4. The method according to claim 3, wherein the message header field of the preset type is a check field.
5. The method according to any one of claims 1 to 4, wherein the first ONU includes at least one cache queue, and each cache queue in the at least one cache queue corresponds to a priority;

   After the first ONU receives the management message from the management network through the included first port, the method further includes:

   Identify the priority field of the management message, extract the priority of the management message from the priority field, and cache the message data of the management message to the corresponding priority of the management message In the cache queue;

   The generating of the data frame by the first ONU includes:

   The first ONU selects a cache queue from the at least one cache queue through a preset strategy according to the priority corresponding to each cache queue;

   The first ONU obtains the message data from the selected buffer queue, and generates a data frame including the obtained message data.
6. The method according to any one of claims 1 to 5, wherein the first port is an Ethernet interface.
7. A communication device, characterized in that the device includes: a monitoring unit, an optical crossover unit, a service access unit, and an optical fiber interface unit, the monitoring unit is provided with a first port, and the service access unit is provided with Second port

   The monitoring unit is configured to receive a management message from a management network through the first port, the management message belongs to a management service, and generate a data frame, the data frame including the message data in the management message ; Convert the data frame into a first optical signal of a first wavelength;

   The service access unit is configured to receive service messages from a metropolitan area network through the second port, where the service messages belong to user services;

   The optical crossover unit is configured to convert the service message into a second optical signal of a second wavelength, where the first wavelength is different from the second wavelength;

   The optical fiber interface unit is configured to send the first optical signal and the second optical signal to a second optical network node ONU.
8. 8. The device according to claim 7, wherein the data frame is a first optical transport network OTN data frame, and the monitoring unit is configured to:

   Generate a second OTN data frame;

   The message data in the management message is added to the target field of the second OTN data frame to obtain the first OTN data frame.
9. The device according to claim 7 or 8, wherein the monitoring unit is further configured to:

   The message header field of the preset type is removed from the message header of the management message to obtain message data in the management message.
10. The apparatus according to claim 9, wherein the message header field of the preset type is a check field.
11. The device according to any one of claims 7 to 10, wherein the monitoring unit comprises at least one cache queue, and each cache queue in the at least one cache queue corresponds to a priority;

    The monitoring unit is used for:

    Identify the priority field of the management message, extract the priority of the management message from the priority field, and cache the message data of the management message to the corresponding priority of the management message In the cache queue;

    Selecting a cache queue from the at least one cache queue through a preset strategy according to the priority corresponding to each cache queue;

    Obtain message data from the selected buffer queue, and generate a data frame including the acquired message data.
12. The device according to any one of claims 7 to 11, wherein the first port is an Ethernet interface.
13. A communication system, characterized in that the system includes: a first optical network node ONU and a second ONU;

    The first ONU is configured to receive management messages from the management network in its area through its first port and to receive service messages from the metropolitan area network in its area through its second port, so The management message belongs to a management service, and the service message belongs to a user service; a data frame is generated, and the data frame includes the message data in the management message; the data frame is converted into the first wavelength of the first wavelength Optical signal and a second optical signal that converts the service packet into a second wavelength, where the first wavelength is different from the second wavelength; combining the first optical signal and the second optical signal into one Optical signal, sending the optical seat number of the first channel to the second ONU;

    The second ONU is configured to obtain a first optical signal of a first wavelength and a second optical signal of a second wavelength from the optical signal, convert the first optical signal into a data frame, and obtain the data from the data The message data is extracted from the frame, the message data is encapsulated into a management message, and the management message is sent to the management network in the area where it includes the first port; the second optical signal is converted into The service message is sent to the metropolitan area network in the area where the service message is located through the second port included in the service message.

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