CN113473267B - Data transmission method, device and communication device - Google Patents

Abstract

Embodiments of the present application provide a data transmission method, device, and communication device. The method on the first network element side includes: receiving data to be transmitted, the data to be transmitted is carried by an initial frame, and according to the service type of the data to be transmitted, Determining the latency level of the data to be transmitted, and selecting an exchange path that matches the latency level of the data, and then, based on the switching path that matches the latency level of the data, transmitting the data and the data the delay level. This method enables network elements after the first network element to directly select paths based on the delay level sent by the first network element, without configuring through network management equipment, thereby greatly reducing the complexity of configuration and maintenance of delay levels in OTN . At the same time, the flexibility of delay level configuration is greatly improved.

Description

Data transmission method, device and communication device

technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to a data transmission method, device, and communication device.

Background technique

Optical transport network (OTN) is a network composed of a group of optical network elements connected together through optical fiber links, which can provide transmission, multiplexing, routing, management, monitoring and protection of optical channels carrying customer signals (survivability). The optical transport network includes multiple network elements, and the network elements may also be called stations. The service data to be transmitted starts from the first network element of the optical transport network and is transmitted to the following network elements one by one. Different service data have different delay requirements. Therefore, each network element in the optical transport network needs to schedule switching paths that can meet the service delay requirements according to the service delay requirements.

In the prior art, the delay level of each service is manually distinguished, and the delay level of each service is manually issued to each network element in the optical transport network. Exemplarily, the delay level is manually set for each service according to information such as the service type, and the delay level of each service is configured for each network element one by one through the network management device.

However, the method in the prior art will lead to a complicated configuration and maintenance process of the delay level.

Contents of the invention

Embodiments of the present application provide a data transmission method, device, and communication device, which are used to solve the problem of complex configuration and maintenance processes of delay levels in the prior art.

In the first aspect, the embodiment of the present application provides a data transmission method, the method including:

receiving data to be transmitted, the data to be transmitted is carried by the initial frame, determining the delay level of the data to be transmitted according to the service type of the data to be transmitted, and selecting a switching path matching the delay level of the data, Furthermore, the data and the delay level of the data are transmitted based on the switching path matching the delay level of the data.

In this method, the first network element determines the delay level according to the service type of the data, and transmits the delay level and data to the subsequent network elements, so that the subsequent network elements can be directly based on the delay sent by the first network element The path can be selected according to the level without configuration through the network management equipment, which greatly reduces the complexity of configuration and maintenance of the delay level in OTN. In addition, since the first network element can dynamically determine the delay level according to the service type of the data, the first network element and the subsequent network elements can dynamically adjust the data delay level accordingly, which greatly improves the flexibility of delay level configuration .

In a possible design, before transmitting the data and the delay level of the data based on the switching path that matches the delay level of the data, further includes:

Performing mapping processing on the initial frame to obtain a target frame carrying the data, the format of the target frame is different from that of the initial frame, and adding the delay level of the data to the target frame.

In a possible design, the transmitting the data and the delay level of the data based on the switching path that matches the delay level of the data includes:

The target frame is transmitted based on the switching path matching the delay level of the data.

In a possible design, the delay level is carried by a service type identifier header of the target frame.

In this method, by writing the delay level into the target frame carrying data, the intermediate network element can know the delay level while receiving the data, and select the matching cross path to transmit the target frame according to the delay level, so that The processing complexity can be simplified.

In a possible design, the transmitting the data and the delay level of the data based on the switching path that matches the delay level of the data includes:

Based on the switching path that matches the delay level of the data, transmit a data frame obtained by mapping the initial frame, where the data frame carries the data; based on the switching path that matches the delay level of the data, Switch paths, and transmit delay-level frames bearing the delay level.

In a possible design, the determining the delay level of the data according to the service type of the data to be transmitted includes:

identifying the service type of the data according to the code stream of the data; and determining the delay level matching the service type of the data.

In this method, the service type of the data can be automatically identified by using the code stream of the data, and then the delay level can be determined, so that there is no need to rely on manual configuration, and the processing efficiency is greatly improved.

In a possible design, the determining the delay level of the data according to the service type of the data to be transmitted includes:

According to the preset mapping relationship between the service type and the delay level, the delay level matching the service type of the data is determined.

In a second aspect, an embodiment of the present application provides a data transmission method, the method including:

The data to be transmitted and the delay level of the data are received, and then, based on the switching path matching the delay level of the data, the data and the delay level of the data are transmitted.

In this method, the intermediate network element receives the delay level and the data to be transmitted from the first network element, so that the intermediate network element can directly select a path based on the delay level sent by the first network element, without going through network management equipment, etc. configuration, thereby greatly reducing the complexity of configuration and maintenance of delay levels in OTN.

In a possible design, the data and the delay level of the data are carried by target frames.

In a possible design, the delay level is carried by a service type identifier header of the target frame.

In a possible design, the transmitting the data and the delay level of the data based on the switching path matching the delay level of the data includes:

The target frame is transmitted based on the switching path matching the delay level of the data.

In a possible design, the data is carried by a data frame, and the delay level is carried by a delay level frame.

In a third aspect, the embodiment of the present application provides a data transmission device, which includes:

The receiving module is configured to receive the data to be transmitted, and the data to be transmitted is carried by the initial frame.

A processing module, configured to determine the delay level of the data according to the service type of the data to be transmitted; and select an exchange path that matches the delay level of the data; and, based on the The switching path that matches the delay level of the data transmits the data and the delay level of the data.

In a possible design, the processing module is also used for:

performing mapping processing on the initial frame to obtain a target frame carrying the data, the format of the target frame being different from that of the initial frame; and adding the delay level of the data into the target frame.

In a possible design, the processing module is specifically used for:

The target frame is transmitted based on the switching path matching the delay level of the data.

In a possible design, the delay level is carried by a service type identifier header of the target frame.

In a possible design, the processing module is specifically used for:

Based on the switching path matching the delay level of the data, transmitting a data frame obtained by mapping the initial frame, the data frame carrying the data; and, based on the delay level of the data and the data; A matching switching path transmits a delay-level frame carrying the delay level.

In a possible design, the processing module is specifically used for:

identifying the service type of the data according to the code stream of the data; and determining a delay level matching the service type of the data.

In a possible design, the processing module is specifically used for:

According to the preset mapping relationship between the service type and the delay level, the delay level matching the service type of the data is determined.

In a fourth aspect, the embodiment of the present application provides a data transmission device, which includes:

The receiving module is configured to receive the data to be transmitted and the delay level of the data.

A processing module, configured to transmit the data and the delay level of the data based on the switching path matching the delay level of the data.

In a possible design, the data and the delay level of the data are carried by target frames.

In a possible design, the delay level is carried by a service type identifier header of the target frame.

In a possible design, the processing module is specifically used for:

The target frame is transmitted based on the switching path matching the delay level of the data.

In a possible design, the data is carried by a data frame, and the delay level is carried by a delay level frame.

In a fifth aspect, an embodiment of the present application provides a communication device, including a processor, the processor is connected to a memory, the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory, so that the device executes the method described in the first aspect above.

In a sixth aspect, an embodiment of the present application provides a communication device, including a processor, the processor is connected to a memory, the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory, so that the device executes the method described in the first aspect above.

In the seventh aspect, the embodiments of the present application provide a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is run, the above-mentioned first or second aspect can be realized. method.

In an eighth aspect, the embodiment of the present application provides a chip, including a processor and an interface.

The processor is configured to read instructions to execute the data transmission method described in the first aspect or the second aspect.

In a ninth aspect, an embodiment of the present application provides a computer program product, the computer program product includes computer program code, and when the computer program code is executed by a computer, the computer executes the above-mentioned first aspect or the second aspect. described method.

In a tenth aspect, an embodiment of the present application provides a communication system, including the communication device described in the fifth aspect and the communication device described in the sixth aspect.

Description of drawings

FIG. 1 is an example diagram of configuring delay levels in the prior art;

FIG. 2 is an exemplary system architecture diagram of a data transmission method according to an embodiment of the present application;

FIG. 3 is a schematic diagram of an exemplary frame structure of an OTN;

FIG. 4 is an interactive schematic diagram of a data transmission method provided in an embodiment of the present application;

FIG. 5 is an example diagram of the internal structure of each network element in the OTN;

Figure 6 is an example diagram of an OTN network element selecting a switching path according to a delay level;

FIG. 7 is an example diagram of a cell structure of OTN;

FIG. 8 is a block diagram of a data transmission device provided in an embodiment of the present application;

FIG. 9 is a block diagram of another data transmission device provided in an embodiment of the present application;

FIG. 10 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 11 is a schematic structural diagram of another communication device provided by an embodiment of the present application.

Detailed ways

In the prior art, a delay level is manually set for each service according to information such as a service type, and the delay level of each service is configured for each network element one by one through a network management device. FIG. 1 is an example diagram of configuring delay levels in the prior art. As shown in FIG. 1 , a network management device is respectively connected to each network element in the OTN. Use the visualized interface provided by the network management device to configure the delay level of each service for each network element of the OTN connected to the network management device. Since the OTN includes many network elements and involves many types of services, the method in the prior art will lead to complex configuration and maintenance processes of delay levels. For example, if the delay level of a certain service needs to be adjusted, the configuration information of each network element in the entire OTN needs to be modified. In addition, once the delay level of a certain service is configured for the network element, the network element will transmit the data of this kind of service according to the configured delay level, and cannot be adjusted dynamically.

Considering the complex configuration and maintenance process caused by manual configuration of service delay levels in the prior art, in the embodiment of this application, the first network element of the OTN automatically determines the delay level of service data and transmits the delay level to the There is no need to configure and maintain delay level information on intermediate network elements, thereby greatly reducing the complexity of configuring and maintaining delay levels in the OTN.

FIG. 2 is an exemplary system architecture diagram of a data transmission method according to an embodiment of the present application. As shown in FIG. A network connection, network element 1 can transmit the data received from the user end equipment or the previous network to the intermediate network element, that is, network element 2, through the intermediate network element 2 to the intermediate network element 3, and then transmitted by the intermediate network element 3 To the subsequent intermediate network element, after layer-by-layer transmission of multiple intermediate network elements, it is transmitted to the end network element, namely network element n, and network element n then sends the data to the next network or the user end device that receives the data.

As a possible scenario, the OTN includes only two network elements, and the network element connected to the first network element can be called an intermediate network element or an end network element. For ease of description, this network element is referred to as an intermediate network element in the embodiment of the present application, and the intermediate network element is actually an end network element of the OTN.

OTN can adapt to any customer service through the OPUk container. For example, synchronous digital hierarchy (synchronous digital hierarchy, SDH), asynchronous transfer mode (asynchronous transfer mode, ATM), Ethernet (ethernet), storage area network (storage area network) Area network, SAN) and other data formats are mapped to the frame structure of the OTN for transmission in the OTN, and are mapped to the data format supported by the next network or user end equipment on the end network element side of the OTN.

FIG. 3 is a schematic diagram of an exemplary frame structure of an OTN. As shown in FIG. 3 , the OPUk can provide physically isolated communication channels based on 192-byte fixed-length cell slices. Wherein, the channel bandwidth can be the following formula (1):

Channel bandwidth (bit/s) = number of allocated cells per second (cell rate) × 192 × 8 (1)

Combined with actual needs, the bandwidth of the communication channel is at least 2Mbit/s, and supports n×2M configurable.

Figure 4 is a schematic diagram of the interaction of the data transmission method provided by the embodiment of the present application. The interaction process involves the first network element in the OTN and the intermediate network elements connected to it. For example, taking the system architecture shown in Figure 2 above as an example, the first network element The element may be a network element 1 and an intermediate network element 2 connected to it. As shown in Figure 4, the interaction process between the first network element in the OTN and the intermediate network elements connected to it includes:

S401. The first network element receives data to be transmitted, and the data to be transmitted is carried by an initial frame.

Figure 5 is an example diagram of the internal structure of each network element in the OTN. As shown in Figure 5, the first network element and the terminal network element include branch boards, cross-connect boards, and line boards, and each intermediate network element includes line boards. Single board and cross board. Among them, the tributary board can perform frame structure mapping, and the cross-connect board can select a switching path matching the delay level according to the data delay level. The line board can receive data from a previous network element and/or send data to a subsequent network element.

Optionally, in this step, the tributary board of the first network element receives the initial frame, and the format of the initial frame may be, for example, the SDH, ATM, Ethernet, SAN and other frame formats mentioned above. After receiving the initial frame, the tributary board performs frame format mapping, and maps the initial frame to an OTN frame format, for example, the frame format shown in FIG. 3 above.

S402. The first network element determines the delay level of the data according to the service type of the data to be transmitted.

Optionally, the tributary board in the first network element may determine the data delay level.

Data of different service types has different requirements on latency levels, and the first network element can select a latency level that can meet service requirements for the data according to the service types of the data.

The specific process of determining the delay level of data by the first network element according to the service type of the data will be described in detail in the following embodiments.

S403. The first network element selects a switching path that matches the delay level of the above data.

Wherein, the foregoing interaction path refers to an exchange path when data is transmitted inside the first network element.

As an optional implementation manner, four delay levels may be defined in the OTN, which are 10us, 20us, 30us and 50us respectively. Taking the delay level of 10us as an example, it indicates that when transmitting data of this delay level, the delay needs to be less than or equal to 10us. For data with different delay level requirements, each network element in the OTN can select different switching paths. Fig. 6 is an example diagram of an OTN network element selecting a switching path according to a delay level. As shown in Fig. 6, PR represents a priority, H represents a high priority, and L represents a low priority. SP means priority-based scheduling (schedule of priority). The four latency classes are the lowest latency class, the second latency class, the third latency class, and the fourth latency class. Among them, the lowest latency class has the highest priority, therefore, the switching path is the shortest, and so on , the priority of the fourth delay class is the lowest, therefore, the switching path is the longest.

Optionally, after determining the delay level, the tributary board of the first network element may send the delay level to the cross-connect board, and the cross-connect board selects a switching path matching the data delay level in the above manner.

S404. The first network element transmits the data and the delay level of the data based on the switching path that matches the delay level of the data.

Optionally, the data transmission and the data delay level described in this step refer to that within the first network element, the cross-connect board transmits the data and the delay level to the line according to the switching path matching the data delay level The single board, and then the line single board sends the data and delay level to the intermediate network element connected to the first network element.

Correspondingly, the intermediate network element receives the data to be transmitted and the delay level of the data. Specifically, the line board of the intermediate network element may receive the data and the delay level of the data, and then the line board sends the data and the delay level to the cross-connect board.

Optionally, the first network element may use one frame to transmit data and delay levels at the same time, or may use different frames to transmit data and delay levels separately. The specific transmission process will be described in detail in the following embodiments.

S405. The intermediate network element transmits the data and the delay level of the data based on the switching path that matches the delay level of the data.

Optionally, the cross-connect board of the intermediate network element may transmit the foregoing data and delay level based on the switching path.

In a possible scenario, the intermediate network element does not belong to the terminal network element of the OTN, that is, the intermediate network element is connected to the next intermediate network element or terminal network element, then the transmission data and the delay level described in this step can be It means that the cross-connect board of the intermediate network element transmits the data and delay level to the line board according to the switching path matching the data delay level, and then the line board sends the data and delay level to the network element connected to the intermediate network element. The next intermediate NE or terminal NE.

In another possible scenario, the intermediate network element belongs to the terminal network element of the OTN, that is, the intermediate network element is no longer connected to other network elements of the OTN, then the transmission data and delay level described in this step can refer to the The cross-connect board of the network element transmits the data and the delay level to the tributary board according to the switching path that matches the data delay level, and then the tributary board maps the data in a frame format before sending it.

In the embodiment of this application, the first network element of the OTN determines the delay level according to the service type of the data, and transmits the delay level and data to the subsequent network elements, so that the subsequent network elements can be directly based on the data sent by the first network element. The path can be selected according to the delay level, without the need to configure through the network management equipment, thus greatly reducing the complexity of configuration and maintenance of the delay level in OTN. In addition, since the first network element can dynamically determine the delay level according to the service type of the data, the first network element and the subsequent network elements can dynamically adjust the data delay level accordingly, which greatly improves the flexibility of delay level configuration .

The specific methods for transmitting data and delay levels in the above steps S404 and S405 are described below.

Optionally, the head network element and/or the intermediate network element may use one frame to transmit data and delay levels at the same time, or may use different frames to transmit data and delay levels respectively. Each will be described below.

First, the transmission method of the first network element is described.

In the first optional mode, the first network element uses the same frame to transmit data and delay level.

Optionally, a frame for transmitting data and a delay level is called a target frame.

In this optional mode, after the tributary board of the first network element receives the initial frame carrying the data to be transmitted, it may first determine the delay level of the data according to the above step S402, and then, the tributary board performs The mapping process obtains the target frame carrying data, the format of the target frame is different from the format of the initial frame, the format of the target frame can be the OTN frame format shown in Figure 3, for example, and then, the tributary board can determine the Add the delay level of the target frame to the target frame, and send the target frame to the cross-connect board. After receiving the target frame, the cross-connect board reads the delay level information from the target frame, and selects the switching path according to the delay level. The cross-connect board then sends the target frame to the line board along the switching path, and the line board then sends the target frame to the intermediate network element connected to the first network element.

As an optional implementation, when adding the delay level to the target frame, the tributary board can add the delay level to the service type identifier header of the target frame, that is, the delay level can be determined by the service type of the target frame Identity header bearer.

Figure 7 is an example diagram of the cell structure of the OTN, as shown in Figure 7, the cell structure of the OTN includes:

(1), Common Head:

General cell header, represented by 4 bytes, is mainly used to define the general overhead of OTN cells.

(2), PT Specific Head:

The service type identification header is mainly used to carry the application differences brought about by constant bit rate (CBR) and VBR.

(3), CRC8:

Indicates the CRC8 checksum of the 6-byte cell header (common Head+PT Specific Head).

(4), ESQ/Payload:

ESQ is a serial number, which is used for link bundling and lossless adjustment. When EXT in the Common Head field is 1, it means ESQ, and when EXT is 0, it is filled with Payload.

(5), Payload:

181-byte business payload.

Among them, the PT Specific Head has a total of 2 bytes, that is, 16 bits, and the ninth bit is the RES multiframe, with a total of 64 bits. In the embodiment of this application, 3 bits of the RES overhead can be reserved for carrying the delay level .

Specifically, the delay level occupies 3 bits of the RES. Assuming that the OTN includes four delay classes, the numbers 1, 2, 3, and 4 can be used to represent the four delay classes respectively, and 4 extended numbers are reserved for subsequent use.

Optionally, the cell shown in FIG. 7 above may be a slice of an OPU payload (OPU payload) in FIG. 3 above.

By writing the delay level into the target frame carrying data, the intermediate network element can know the delay level while receiving the data, and select the matching cross path to transmit the target frame according to the delay level, thus simplifying the processing complexity .

In the second optional mode, the first network element uses different frames to transmit data and delay levels.

Optionally, frames for transmitting data are called data frames, and frames for transmitting delay levels are called delay level frames.

In this optional mode, after the tributary board of the first network element receives the initial frame carrying the data to be transmitted, it can determine the delay level of the data according to the above step S402 and add the delay level to the delay level frame, The delay level frame can be a maintenance (OAM) message, and the initial frame is mapped to obtain a data frame carrying data. The format of the data frame is different from the format of the initial frame. The format of the data frame can be, for example, In the OTN frame format shown in 3, the order in which the tributary boards determine the delay level and perform frame mapping processing is not in particular order. Furthermore, the tributary board can send the delay level frame and the data frame to the cross board respectively. After receiving the delay class frame and the data frame, the cross-connect board reads the delay class information from the delay class frame, and selects the switching path according to the delay class. The cross-connection board then sends the data frame and the delay-level frame to the line board along the switching path, and the line board then sends the data frame and the delay-level frame to the intermediate network element connected to the first network element.

The transmission method of the intermediate network element is described below.

In the first optional manner, the intermediate network element uses the same frame to transmit data and delay level.

This method is used in conjunction with the first optional method of the first network element above. If the first network element uses the same frame to transmit data and delay level, the intermediate network element uses the same frame to transmit data and delay level accordingly.

In this optional mode, after receiving the target frame, the line board of the intermediate network element sends the target frame to the cross-connect board, and the cross-connect board parses the delay level from the target frame and selects the switching path according to the delay level . If the intermediate network element is not the end network element of the OTN, the cross-connect board sends the target frame to the line board along the switching path, and the line board then sends the target frame to the next intermediate network element connected to the middle network element or the end network element. If the intermediate network element is the end network element of the OTN, the cross-connect board sends the target frame to the branch board along the switching path, and the branch board maps the target frame and sends it to the next network or user-side equipment.

In the second optional manner, the intermediate network element uses different frames to transmit data and delay levels.

Optionally, frames for transmitting data are called data frames, and frames for transmitting delay levels are called delay level frames.

This method is used in conjunction with the second optional method of the first network element above. If the first network element uses different frames to transmit data and delay levels, the intermediate network elements use different frames to transmit data and delay levels accordingly.

In this optional manner, the line board of the intermediate network element receives the data frame carrying the data to be transmitted and the delay level frame carrying the delay level. The line board can send delay-level frames and data frames to the cross-connect board respectively. After receiving the delay class frame and the data frame, the cross-connect board reads the delay class information from the delay class frame, and selects the switching path according to the delay class. If the intermediate network element is not the end network element of the OTN, the cross-connect board sends the data frame and delay class frame to the line board along the switching path, and the line board then sends the data frame and delay class frame to the intermediate network The next intermediate network element or terminal network element connected to the network element. If the intermediate network element is the terminal network element of the OTN, the cross-connect board sends the data frame to the branch board along the switching path, and the branch board maps the data frame and sends it to the next network or user-side equipment.

The following describes the process of determining the delay level of data by the first network element in step S402 according to the service type of the data to be transmitted.

In the first optional manner, the first network element can identify the service type of the data according to the code stream of the data, and determine the delay level matching the service type of the data.

In this method, the first network element can identify the service type of the data by analyzing the characteristics of the data stream, and automatically determine the delay level that matches the service type of the data based on the matching rules between the service type and the delay level.

Exemplarily, after the first network element receives the data code stream, it identifies the service type of the data as video by analyzing the characteristics of the data code stream, and then, based on the matching rule between the service type and the delay, the delay level of the video can be obtained as The lowest latency level, and transmit data according to the lowest latency level.

In the second optional manner, the first network element may determine the delay level matching the service type of the data according to the preset mapping relationship between the service type and the delay level.

Optionally, the mapping relationship between the service type and the delay level can be pre-configured by the user on the network management device. The first network element can obtain the mapping relationship from the network management device. After the first network element receives the data to be transmitted, it can first determine the service type of the data, and then, according to the above mapping relationship, find out the delay level that can match the service type.

Fig. 8 is a module structure diagram of a data transmission device provided by the embodiment of the present application. The device may be the first network element of the aforementioned OTN, or may be the first network element capable of implementing the method provided by the embodiment of the present application. A function device of a network element, for example, the device may be a device or a chip system in the first network element. As shown in Figure 8, the device includes:

The receiving module 801 is configured to receive data to be transmitted, and the data to be transmitted is carried by an initial frame.

The processing module 802 is configured to determine the delay level of the data according to the service type of the data to be transmitted; and select an exchange path that matches the delay level of the data; and, based on the The data and the delay level of the data are transmitted on the switching path that matches the delay level of the data.

As an optional implementation manner, the processing module 802 is also configured to:

performing mapping processing on the initial frame to obtain a target frame carrying the data, the format of the target frame being different from that of the initial frame; and adding the delay level of the data into the target frame.

As an optional implementation manner, the processing module 802 is specifically configured to:

The target frame is transmitted based on the switching path matching the delay level of the data.

As an optional implementation manner, the delay level is carried by a service type identifier header of the target frame.

As an optional implementation manner, the processing module 802 is specifically configured to:

Based on the switching path matching the delay level of the data, transmitting a data frame obtained by mapping the initial frame, the data frame carrying the data; and, based on the delay level of the data and the data; A matching switching path transmits a delay-level frame carrying the delay level.

As an optional implementation manner, the processing module 802 is specifically configured to:

identifying the service type of the data according to the code stream of the data; and determining a delay level matching the service type of the data.

As an optional implementation manner, the processing module 802 is specifically configured to:

According to the preset mapping relationship between the service type and the delay level, the delay level matching the service type of the data is determined.

The data transmission device provided in the embodiment of the present application can execute the method steps in the above method embodiment, and its implementation principle and technical effect are similar, and will not be repeated here.

Fig. 9 is a module structure diagram of another data transmission device provided by the embodiment of the present application. The device may be the aforementioned intermediate network element of the OTN, or may be an intermediate network element capable of implementing the method provided in the embodiment of the present application. A device for the function of the intermediate network element, for example, the device may be a device or a chip system in the intermediate network element. As shown in Figure 9, the device includes:

The receiving module 901 is configured to receive the data to be transmitted and the delay level of the data.

The processing module 902 is configured to transmit the data and the latency level of the data based on the switching path matching the latency level of the data.

As an optional implementation manner, the data and the delay level of the data are carried by a target frame.

As an optional implementation manner, the delay level is carried by a service type identifier header of the target frame.

As an optional implementation manner, the processing module 902 is specifically configured to:

The target frame is transmitted based on the switching path matching the delay level of the data.

As an optional implementation manner, the data is carried by a data frame, and the delay level is carried by a delay level frame.

The data transmission device provided in the embodiment of the present application can execute the method steps in the above method embodiment, and its implementation principle and technical effect are similar, and will not be repeated here.

It should be noted that it should be understood that the division of each module of the above device is only a division of logical functions, and may be fully or partially integrated into one physical entity or physically separated during actual implementation. And these modules can all be implemented in the form of calling software through processing elements; they can also be implemented in the form of hardware; some modules can also be implemented in the form of calling software through processing elements, and some modules can be implemented in the form of hardware. For example, the determining module may be a separate processing element, or may be integrated in a chip of the above-mentioned device. In addition, it may be stored in the memory of the above-mentioned device in the form of program code, and a certain processing element of the above-mentioned device may Call and execute the functions of the modules identified above. The implementation of other modules is similar. In addition, all or part of these modules can be integrated together, and can also be implemented independently. The processing element mentioned here may be an integrated circuit with signal processing capability. In the implementation process, each step of the above method or each module above can be completed by an integrated logic circuit of hardware in the processor element or an instruction in the form of software.

For example, the above modules may be one or more integrated circuits configured to implement the above method, for example: one or more specific integrated circuits (application specific integrated circuit, ASIC), or one or more microprocessors (digital signal processor, DSP), or, one or more field programmable gate arrays (field programmable gate array, FPGA), etc. For another example, when one of the above modules is implemented in the form of a processing element scheduling program code, the processing element may be a general-purpose processor, such as a central processing unit (central processing unit, CPU) or other processors that can call program codes. For another example, these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Transmission to another website site, computer, server, or data center by wired (eg, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media. The available medium may be a magnetic medium (for example, a floppy disk, a hard disk, or a magnetic tape), an optical medium (for example, DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

FIG. 10 is a schematic structural diagram of a communication device provided by an embodiment of the present application. Exemplarily, the communication device may be the head network element of the OTN described in the foregoing embodiments. As shown in FIG. 10 , the communication device 1000 may include: a processor 101 (such as a CPU), a memory 102 , and a transceiver 103 ; Various instructions may be stored in the memory 102 for completing various processing functions and implementing method steps executed by the first network element in the embodiment of the present application.

Optionally, the communication device involved in this embodiment of the present application may further include: a power supply 104 , a system bus 105 and a communication port 106 . The transceiver 103 may be integrated in the transceiver of the communication device, or may be an independent transceiver antenna on the communication device. The system bus 105 is used to realize the communication connection between the components. The above-mentioned communication port 106 is used to realize connection and communication between the communication device and other peripheral devices.

In the embodiment of the present application, the above-mentioned processor 101 is configured to be coupled with the memory 102, and read and execute instructions in the memory 102, so as to implement the method steps executed by the first network element in the above-mentioned method embodiment. The transceiver 103 is coupled to the processor 101, and the processor 101 controls the transceiver 103 to send and receive messages. The implementation principles and technical effects are similar and will not be repeated here.

The system bus mentioned in FIG. 10 may be a peripheral component interconnect standard (peripheral component interconnect, PCI) bus or an extended industry standard architecture (extended industry standard architecture, EISA) bus or the like. The system bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus. The communication interface is used to realize the communication between the database access device and other devices (such as client, read-write library and read-only library). The memory may include RAM, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.

The processor mentioned in this Figure 10 can be a general-purpose processor, including a central processing unit CPU, a network processor (network processor, NP), etc.; it can also be a digital signal processor DSP, an application-specific integrated circuit ASIC, a field programmable gate Array FPGA or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

FIG. 11 is a schematic structural diagram of another communication device provided by an embodiment of the present application. Exemplarily, the communication device may be an intermediate network element of the OTN described in the foregoing embodiments. As shown in FIG. 11 , the communication device 1100 may include: a processor 111 (such as a CPU), a memory 112 , and a transceiver 113 ; Various instructions may be stored in the memory 112 for completing various processing functions and implementing method steps performed by the intermediate network element in the embodiment of the present application.

Optionally, the communication device involved in this embodiment of the present application may further include: a power supply 114 , a system bus 115 , and a communication port 116 . The transceiver 113 may be integrated in a transceiver of the communication device, or may be an independent transceiver antenna on the communication device. The system bus 115 is used to implement communication links between components. The above-mentioned communication port 116 is used to realize connection and communication between the communication device and other peripheral devices.

In the embodiment of the present application, the above-mentioned processor 111 is configured to be coupled with the memory 112, and read and execute instructions in the memory 112, so as to implement the method steps performed by the intermediate network element in the above-mentioned method embodiment. The transceiver 113 is coupled to the processor 111, and the processor 111 controls the transceiver 113 to send and receive messages. The implementation principles and technical effects are similar and will not be repeated here.

The system bus mentioned in FIG. 11 may be a PCI bus or an EISA bus or the like. The system bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus. The communication interface is used to realize the communication between the database access device and other devices (such as client, read-write library and read-only library). The memory may include RAM, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.

The processor mentioned in Figure 11 can be a general-purpose processor, including CPU, NP, etc.; it can also be a DSP, a dedicated ASIC, FPGA or other programmable logic devices, discrete gate or transistor logic devices, and discrete hardware components.

Optionally, the embodiment of the present application also provides a readable storage medium, and instructions are stored in the storage medium, and when it is run on a computer, the computer executes the method as shown in the above-mentioned embodiments shown in FIG. 4 to FIG. 7 .

Optionally, the embodiment of the present application further provides a chip for running instructions, and the chip is used to execute the method in the above embodiments shown in FIG. 4 to FIG. 7 .

The embodiment of the present application also provides a program product, the program product includes a computer program, the computer program is stored in a storage medium, at least one processor can read the computer program from the storage medium, and the at least one When the processor executes the computer program, the methods in the above embodiments shown in FIG. 4 to FIG. 7 can be realized.

In the embodiments of the present application, "at least one" means one or more, and "multiple" means two or more. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the contextual objects are an "or" relationship; in the formula, the character "/" indicates that the contextual objects are a "division" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one item (piece) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein, a, b, c can be single or multiple indivual.

It can be understood that the various numbers involved in the embodiments of the present application are only for convenience of description, and are not used to limit the scope of the embodiments of the present application.

It can be understood that, in the embodiments of the present invention, the serial numbers of the above-mentioned processes do not mean the order of execution, and the order of execution of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present application. The implementation process constitutes any limitation.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (24)

1. A data transmission method is applied to a first network element of an Optical Transport Network (OTN), wherein the first network element comprises a branch single board, a cross single board and a line single board; the branch single board performs frame structure mapping, the cross single board selects an exchange path matched with the delay grade according to the delay grade of the data, and the line single board receives the data from a previous network element and/or sends the data to a next network element; it is characterized by comprising:

receiving data to be transmitted, wherein the data to be transmitted is carried by an initial frame;

determining the time delay grade of the data according to the service type of the data to be transmitted;

selecting a switching path matched with the time delay grade of the data;

transmitting the data and the delay level of the data based on the exchange path matched with the delay level of the data;

determining the delay grade of the data according to the service type of the data to be transmitted, including:

identifying the service type of the data according to the code stream of the data;

determining a delay level matched with the service type of the data; or,

and determining the delay grade matched with the service type of the data according to a preset mapping relation between the service type and the delay grade.

2. The method of claim 1, wherein the transmitting the data and the latency level of the data based on the switched path matching the latency level of the data further comprises:

mapping the initial frame to obtain a target frame bearing the data, wherein the format of the target frame is different from that of the initial frame;

and adding the delay grade of the data into the target frame.

3. The method of claim 2, wherein the transmitting the data and the latency level of the data based on the switched path matching the latency level of the data comprises:

and transmitting the target frame based on the switching path matched with the time delay grade of the data.

4. The method of claim 2 or 3, wherein the latency class is carried by a traffic type identifier header of the target frame.

5. The method of claim 1, wherein the transmitting the data and the latency level of the data based on the switched path matching the latency level of the data comprises:

transmitting a data frame mapped by the initial frame based on the exchange path matched with the time delay grade of the data, wherein the data frame bears the data;

and transmitting a delay level frame bearing the delay level based on the exchange path matched with the delay level of the data.

6. A data transmission method is applied to an intermediate network element of an Optical Transport Network (OTN), wherein the intermediate network element comprises a cross single board and a line single board; the cross single board selects an exchange path matched with the delay grade according to the delay grade of the data, and the line single board receives the data from a previous network element and/or sends the data to a next network element; it is characterized by comprising the following steps:

receiving data to be transmitted and the time delay grade of the data; the delay grade is determined by a first network element of an Optical Transport Network (OTN) according to the code stream of the data to be transmitted to identify the service type of the data or according to a preset mapping relation between the service type and the delay grade;

and transmitting the data and the delay level of the data based on a switching path matched with the delay level of the data.

7. The method of claim 6, wherein the data and the latency level of the data are carried by a target frame.

8. The method of claim 7, wherein the latency class is carried by a traffic type identifier header of the target frame.

9. The method of claim 7 or 8, wherein the transmitting the data and the latency level of the data based on the switch path matching the latency level of the data comprises:

and transmitting the target frame based on the switching path matched with the time delay grade of the data.

10. The method of claim 6, wherein the data is carried by a data frame and the latency class is carried by a latency class frame.

11. A data transmission device is arranged at a first network element of an Optical Transport Network (OTN), wherein the first network element comprises a branch single board, a cross single board and a line single board; the branch single board performs frame structure mapping, the cross single board selects a switching path matched with the delay grade according to the delay grade of the data, and the line single board receives the data from a previous network element and/or sends the data to a next network element; it is characterized by comprising:

the receiving module is used for receiving data to be transmitted, and the data to be transmitted is carried by an initial frame;

the processing module is used for determining the time delay grade of the data according to the service type of the data to be transmitted; and the number of the first and second groups,

selecting a switching path matched with the time delay grade of the data; and (c) a second step of,

transmitting the data and the delay level of the data based on the exchange path matched with the delay level of the data;

the processing module is specifically configured to:

identifying the service type of the data according to the code stream of the data, and determining the delay level matched with the service type of the data; or,

and determining the delay grade matched with the service type of the data according to a preset mapping relation between the service type and the delay grade.

12. The apparatus of claim 11, wherein the processing module is further configured to:

mapping the initial frame to obtain a target frame bearing the data, wherein the format of the target frame is different from that of the initial frame; and the number of the first and second groups,

and adding the delay grade of the data into the target frame.

13. The apparatus of claim 12, wherein the processing module is specifically configured to:

and transmitting the target frame based on the switching path matched with the time delay grade of the data.

14. The apparatus of claim 12 or 13, wherein the latency class is carried by a traffic type identifier header of the target frame.

15. The apparatus according to claim 11, wherein the processing module is specifically configured to:

transmitting a data frame mapped by the initial frame based on the exchange path matched with the delay level of the data, wherein the data frame bears the data; and the number of the first and second groups,

and transmitting a delay level frame bearing the delay level based on the exchange path matched with the delay level of the data.

16. A data transmission device is arranged in an intermediate network element of an Optical Transport Network (OTN), wherein the intermediate network element comprises a cross single board and a line single board; the cross single board selects an exchange path matched with the delay grade according to the delay grade of the data, and the line single board receives the data from a previous network element and/or sends the data to a next network element; it is characterized by comprising:

the receiving module is used for receiving the data to be transmitted and the time delay grade of the data; the delay grade is determined by a first network element of an Optical Transport Network (OTN) according to the service type of the data identified by the code stream of the data to be transmitted, or according to a preset mapping relation between the service type and the delay grade;

and the processing module is used for transmitting the data and the time delay grade of the data based on the exchange path matched with the time delay grade of the data.

17. The apparatus of claim 16, wherein the data and the latency level of the data are carried by a target frame.

18. The apparatus of claim 17, wherein the latency class is carried by a traffic type identifier header of the target frame.

19. The apparatus according to claim 17 or 18, wherein the processing module is specifically configured to:

and transmitting the target frame based on the switching path matched with the time delay grade of the data.

20. The apparatus of claim 16, wherein the data is carried by a data frame and the latency class is carried by a latency class frame.

21. A communications apparatus comprising a processor coupled to a memory, the memory storing a computer program, the processor being configured to execute the computer program stored in the memory to cause the apparatus to perform the method of any of claims 1 to 5.

22. A communication apparatus comprising a processor coupled to a memory, the memory storing a computer program, the processor being configured to execute the computer program stored in the memory to cause the apparatus to perform the method of any of claims 6 to 10.

23. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program which, when executed, implements the method of any of claims 1 to 5 or any of claims 6-10.

24. A communication system comprising the communication apparatus of claim 21 and the communication apparatus of claim 22.

Images