WO2024001337A1 - Port service mapping processing method and apparatus, storage medium and electronic device - Google Patents

Abstract

Embodiments of the present application provide a port service mapping processing method and apparatus, a storage medium and an electronic device. The method comprises: grouping a plurality of OSU ports to obtain a plurality of groups of OSU ports, and separately acquiring mapping opportunities of the plurality of groups of OSU ports; according to the mapping opportunities of the plurality of groups of OSU ports, determining a target service port used for scheduling; inserting a service or IDLE frame of a target OSU port into an OPUk payload block corresponding to the target service port to obtain a target OPUk payload block; and inserting the overhead of ODUk and OPUk into a target OPUk port to generate an ODUk frame of an ODU port corresponding to the target service port.

Description

Port service mapping processing method, device, storage medium and electronic device

Related applications

This application claims priority to the Chinese patent application with application number 202210753843.3 filed on June 29, 2022, the entire content of which is incorporated into this application by reference.

Technical field

Embodiments of the present application relate to the field of communications, and specifically to a port service mapping processing method, device, storage medium, and electronic device.

Background technique

In order to support both Optical Service Unit (OSU)-based services and ODUk-based services, the metropolitan optical transport network (Optical Transport Network, referred to as OTN) network should support both OSU and ODUk switching. In the metropolitan area On the core node equipment of the OTN network, OSUs from other metropolitan OTN networks need to be multiplexed into ODUk frames.

Regarding the problem of how to multiplex OSU port services into ODUk frames in related technologies, no solution has yet been proposed.

Contents of the invention

Embodiments of the present application provide a port service mapping processing method, device, storage medium, and electronic device to at least solve the problem in related technologies of how to multiplex OSU port services into ODUk frames.

According to an embodiment of the present application, a port service mapping processing method is provided, and the method includes:

Group multiple OSU ports to obtain multiple sets of OSU ports, and obtain mapping opportunities for the multiple sets of OSU ports respectively;

Determine the target service port for scheduling according to the mapping opportunities of the multiple groups of OSU ports;

Insert the service or IDLE frame of the target OSU port into the OPUk payload block corresponding to the target service port to obtain the target OPUk payload block;

Insert the overhead of ODUk and OPUk into the target OPUk port to generate an ODUk frame of the ODU port corresponding to the target service port.

According to another embodiment of the present application, a port service mapping processing device is also provided, and the device includes:

An acquisition module is used to group multiple OSU ports to obtain multiple groups of OSU ports, and obtain mapping opportunities for the multiple groups of OSU ports respectively;

A determining module, configured to determine the target service port for scheduling according to the mapping opportunities of the multiple groups of OSU ports;

An insertion module, used to insert the service or IDLE frame of the target OSU port into the OPUk payload block corresponding to the target service port to obtain the target OPUk payload block;

The first generation module is used to insert the overhead of ODUk and OPUk into the target OPUk port to generate an ODUk frame of the ODU port corresponding to the target service port.

According to yet another embodiment of the present application, a computer-readable storage medium is also provided, and a computer program is stored in the storage medium, wherein the computer program is configured to execute any of the above method embodiments when running. step in steps.

According to yet another embodiment of the present application, an electronic device is also provided, including a memory and a processor. A computer program is stored in the memory, and the processor is configured to run the computer program to perform any of the above. Steps in method embodiments.

In the embodiment of this application, multiple OSU ports are grouped to obtain multiple groups of OSU ports, and mapping opportunities of the multiple groups of OSU ports are obtained respectively; the target service port for scheduling is determined based on the mapping opportunities of the multiple groups of OSU ports; the target OSU port Insert the service or IDLE frame into the OPUk payload block corresponding to the target service port to obtain the target OPUk payload block; insert the ODUk and OPUk overhead into the target OPUk port to generate the ODUk frame of the ODU port corresponding to the target service port. Solve the problem in related technologies of how to multiplex OSU port services into ODUk frames. Multiplexing OSU into ODUk frames can efficiently carry low-rate services and ensure quality.

Description of drawings

Figure 1 is a hardware structure block diagram of a mobile terminal of a port service mapping processing method according to an embodiment of the present application;

Figure 2 is a flow chart of a port service mapping processing method according to an embodiment of the present application;

Figure 3 is a flow chart of a scheduling method for mapping multiple OSU ports to ODUk frames according to this embodiment;

Figure 4 is a flow chart of a scheduling method for mapping multiple OSU ports to ODUk frames according to this optional embodiment;

Figure 5 is a block diagram of a port service mapping processing device according to an embodiment of the present application.

Detailed ways

The embodiments of the present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

It should be noted that the terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

The method embodiments provided in the embodiments of this application can be executed in a mobile terminal, a computer terminal, or a similar computing device. Taking running on a mobile terminal as an example, Figure 1 is a hardware structure block diagram of a mobile terminal of the port service mapping processing method according to the embodiment of the present application. As shown in Figure 1, the mobile terminal may include one or more (only shown in Figure 1 A) processor 102 (the processor 102 may include but is not limited to a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data, wherein the above-mentioned mobile terminal may also include a processor for communication Functional transmission device 106 and input and output device 108. Persons of ordinary skill in the art can understand that the structure shown in Figure 1 is only illustrative, and it does not limit the structure of the above-mentioned mobile terminal. For example, the mobile terminal may also include more or fewer components than shown in FIG. 1 , or have a different configuration than shown in FIG. 1 .

The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the port service mapping processing method in the embodiment of the present application. The processor 102 runs the computer program stored in the memory 104, thereby Execute various functional applications and business chain address pool slicing processing, that is, implement the above method. Memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory located remotely relative to the processor 102, and these remote memories may be connected to the mobile terminal through a network. Examples of the above-mentioned networks include but are not limited to the Internet, intranets, local area networks, mobile communication networks and combinations thereof.

The transmission device 106 is used to receive or send data via a network. Specific examples of the above-mentioned network may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller (NIC for short), which can be connected to other network devices through base stations to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (Radio Frequency, RF for short) module, which is used to communicate with the Internet wirelessly.

In this embodiment, a port service mapping processing method running on the above-mentioned mobile terminal or network architecture is provided. Figure 2 is a flow chart of the port service mapping processing method according to the embodiment of the present application. As shown in Figure 2, the flow Includes the following steps:

Step S202: Group multiple OSU ports to obtain multiple groups of OSU ports, and obtain mapping opportunities for the multiple groups of OSU ports respectively;

In this embodiment, OSU is an improvement technology made to address the shortcomings of traditional Optical Transport Network (OTN) technology. It changes the characteristics of OTN's time slot division frame structure and adopts more flexible payload blocks. (Payload Block, referred to as PB) division method can achieve efficient carrying of services of different granularities from 2M to 100Gbps.

In order to support both OSU-based services and ODUk-based services, the metropolitan OTN network should support OSU and ODUk switching at the same time. On the core node equipment of the metropolitan OTN network, the OSUs of other metropolitan OTN networks need to be multiplexed into ODUk. . Therefore, the backbone OTN network only needs to support ODUk switching and can continue to use the existing OTN network.

OTN uses time slots to divide the frame structure. It supports a maximum of 80 time slots and the minimum time slot granularity is 1.25Gbps. This indicates that the maximum number of service accesses of ODUk is 80 and the minimum service bandwidth carried is 1.25Gbps. OSU technology adopts a new division method. ODUk frames are divided into a number of PBs, and one OSU occupies one or more PBs. Compared with ODUk in related technologies, OSU can not only provide refined bandwidth granularity, but also no longer rely on the traditional OTN time slot structure, and can effectively enhance the flexibility of service bearing, so that OSU has the capabilities required for the long-term evolution of future networks. Scalability, matching the evolution trend of business grouping.

Step S204: Determine the target service port for scheduling according to the mapping opportunities of multiple groups of OSU ports;

Step S206: Insert the service or IDLE frame of the target OSU port into the OPUk payload block corresponding to the target service port to obtain the target OPUk payload block;

Step S208: Insert the ODUk and OPUk overhead into the target OPUk port to generate an ODUk frame for the ODU port corresponding to the target service port.

In this embodiment, the above step S206 may specifically include: determining whether the services of multiple groups of OSU ports exist; if the determination result is yes, inserting the services of the target OSU port into the OPUk payload block corresponding to the target service port, Obtain the target OPUk payload block; if the judgment result is no, insert the IDLE frame into the OPUk payload block corresponding to the target service port to obtain the target OPUk payload block.

In this embodiment, in the above-mentioned step S202, obtaining the mapping opportunities of multiple groups of OSU ports may specifically include: generating a mapping opportunity counter, which may be generated using the sigma_delta algorithm; accumulating the mapping opportunities of multiple groups of OSU ports through the mapping opportunity counter; Read mapping opportunities for multiple groups of OSU ports from the mapping opportunity counter.

In an optional embodiment, before step S202, the method further includes: performing time-division self-oscillation on the payload blocks of the OPUk payload area according to the time slot table. The OPUk payload area includes multiple payload blocks. , further, read the time slot table based on the time slot corresponding to the payload block, and obtain the OPU port number, transmission cycle and service layer rate to which the time slot belongs; according to the OPU port number, the transmission cycle and the service The payload block corresponding to the layer rate time-division self-oscillation on the time slot can specifically use the sigma_delta algorithm to perform time-division self-oscillation; a payload block counter is generated through the transmission cycle of the OPUk payload area, and the payload block counter is used to time-division self-oscillation. Self-oscillating payload blocks are counted.

In another optional embodiment, before the above step S204, the method further includes:

Perform the following steps for each group of OSU ports in the multi-group OSU port to determine the mapping opportunities and corresponding payload blocks for the multi-group OSU port, which is called the current OSU port group for the OSU port being executed: Get the current OSU port group The mapping opportunity counters and payload block counters of all OSU ports in the current OSU port group are accumulated; the mapping opportunities of all OSU ports in the current OSU port group are accumulated according to the mapping opportunity counter, and the mapping opportunities corresponding to all OSU ports in the current OSU port group are accumulated according to the payload block counter. Count the payload blocks; judge whether the counter value of the payload block is less than the transmission period; if the judgment result is yes, add 1 to the counter value of the payload block; if the judgment result is no, reset the transmission period, and set the counter value of the payload block to 1. If the mapping opportunity is greater than 0, set the mapping opportunity to 1. If the mapping opportunity is equal to 0, set the mapping opportunity to 0; determine whether the following formula is true: j* CmodP<C, where j is the payload block, C is the service rate of the OSU port, and P is the transmission cycle; when the judgment result is yes, the mapping opportunity is increased by 1; when the judgment result is no but the mapping opportunity is greater than 0 In this case, store the non-empty service queues, mapping opportunity counter M and payload block counter j of all OSU ports in the current OSU port group; determine that the number of the current OSU port group is set to the current OSU port group plus 1, where the current OSU port The initial value of the group number is 1.

Correspondingly, the above step S204 may specifically include: determining whether the number of the current OSU port group reaches the number of multiple groups of OSU ports; if the number of the current OSU port group reaches the number of multiple groups of OSU ports, it exists in the multiple groups of OSU ports. If there is a service queue and the mapping opportunity is greater than 0, the target service port is polled among the multiple groups of OSU ports according to the service priorities of the multiple groups of OSU ports or a target service port is randomly selected, and the mapping opportunity of the target service port is reduced by 1; When there is no service queue in multiple groups of OSU ports or the mapping opportunity is equal to 0, an invalid OSU port is generated.

This embodiment uses a time division method to implement polling scheduling of service queues of multiple OSU ports, and completes the filling of the payload block content of the multi-port ODUk. Figure 3 is a flow chart of a scheduling method for multiplexing multiple OSU ports to ODUk frames according to this embodiment. As shown in Figure 3, it includes:

Step S301, use the sigma_delta algorithm to time-division the self-oscillating OPUk payload area according to the time slot table;

Step S302, generate a payload block counter through the P value of the OPUk payload area;

Step S303: Use the sigma_delta algorithm to generate a mapping opportunity counter to obtain the mapping opportunity for the OSU port service;

Step S304: Determine the mapping opportunities for multiple OSU port services based on the service priority of the OUS port service, poll the service ports that need to be scheduled based on the judgment results, and read the corresponding OSU port services according to the service ports;

Step S305: Use the scheduled service port to insert the read service frame or IDLE frame of the OSU port into the corresponding OPUk payload block;

Step S306: Insert the overhead of ODUk and OPUk to generate an ODUk frame of the corresponding port.

The following takes the service mapping and multiplexing of 1024 (2048/4096) OSU ports to 80 ODUk ports as an example to explain this implementation in detail.

Figure 4 is a flow chart of a scheduling method for multiplexing multiple OSU ports to ODUk frames according to this optional embodiment. As shown in Figure 4, it includes:

S401, self-oscillating OPUk payload area, including:

S4011, allocate and give the PB block time-division self-oscillation OPUk payload area according to the time slot table, initial bank_cnt=0;

S4012, bank_cnt=bank_cnt_bank_cnt+1, new PB block starts, bank_cnt=0;

Configure the rate and transmission cycle P value of the OPU service layer. There is at least 1 OPU service layer and a maximum of 80 OPUk (k=0, 1, 2, 2e, 3, 4, flex). The time slot table is read based on the time division self-oscillation of the PB block, and it returns the OPU end to which the time slot belongs. Slogan, transmission period P and service layer rate. The sigma_delta algorithm is used to self-oscillate the OPUk payload area in the corresponding time slot. Perform bank classification on 1024 (2048/4096) OSU ports in sequence, and 128 (256/512) ports correspond to 1 bank. Then the polling counter bank_cnt requires 8 clock cycles to complete the processing of 1024 (2048/4096) OSU ports. count;

S402, generate a payload block counter, including:

S4021, query the mapping opportunity counter M and payload block timer j of the 128 OSU ports corresponding to the bank. It should be noted that the number of OSU port groups can be expanded and is not limited to 128, but can also be 256 or 512, etc.;

S4022, determine whether j<P is established. If the judgment result is yes, execute S4023; otherwise, execute S2044;

S4023, the payload block timer accumulates j=j+1;

S4024, new transmission cycle reset, j=1; if M>0, M=1; else M=0;

Select the mapping opportunity counter M and payload block counter j corresponding to 128 (256/512) OSU ports based on bank_cnt. Payload blocks can be counted for 128 (256/512) OSU ports per clock cycle. When the OSU port j>=P, the new transmission cycle is reset, and j=1 at this time; if M>0, then M=1, and the opportunity is reserved until the next transmission cycle window, otherwise M is cleared to 0;

S403, generate a mapping opportunity counter, including:

Step S4031, determine whether j*C mod P<C is established. If the judgment result is yes, execute step S4032, otherwise execute S4033;

S4032, the mapping opportunity timer accumulates M=M+1, and then enters S404;

S4033: Determine whether M>0 is established. If the judgment result is yes, proceed to step S404; otherwise, return to S4022.

According to the sigma_delta algorithm, the mapping opportunities are calculated for 128 (256/512) OSU ports at the same time. If j*CmodP<C is satisfied at this moment, the opportunity counter M value of the OSU port is increased by 1, otherwise it remains unchanged. At the same time, when the port M value is greater than 0, a mapping opportunity occurs;

S404, polling judgment, including:

S4041, store the non-empty service queues, M and j values of all ports of the current bank;

S4042, determine whether bank_cnt=8 is established. If the judgment result is yes, execute S4043, otherwise return to S4012;

S4043, determine whether all service queues are non-empty. If the judgment result is yes, execute S4044, otherwise execute S4052;

S4044, obtain business priority;

S4045: Select the target service port according to service priority polling, and then proceed to S4051.

Store the non-empty queue of all OSU ports of the current bank, mapping opportunity counter M and payload block counter j. When bank_cnt=8, if there is a non-empty port in the data queue with mapping opportunities, the priority will be judged according to the OSU business type (CBR>PKT), and the scheduling port can be polled in 8 banks; otherwise, an invalid OSU port will be generated;

S405, mapping multiplexing, including:

S4051, map the OSU frame to the current payload block, M=M-1;

S4052, fill IDLE frame;

When the polling port is valid, insert the OSU frame (data frame, maintenance status frame, PKT keep-alive frame, etc.) into the OPUk payload block and update the M value; otherwise, insert the OSU IDLE frame;

S406. Insert overhead, including: inserting ODUk and OPUk overhead, and generating an ODUk frame corresponding to the ODU port.

Through this embodiment, time-division polling scheduling can save hardware implementation resources, reduce complexity, and realize ultra-multiple OSU port services. Mapping and multiplexing to efficient transmission of multi-port ODUk services achieves the scalable effect of port number and service priority. It can effectively solve the problem of efficiently carrying low-rate services and ensure quality.

The embodiment of the present application also provides a port service mapping processing device. Figure 5 is a block diagram of the port service mapping processing device according to the embodiment of the present application. As shown in Figure 5, the device includes:

The acquisition module 52 is used to group multiple OSU ports to obtain multiple groups of OSU ports, and obtain mapping opportunities for the multiple groups of OSU ports respectively;

Determining module 54, configured to determine the target service port for scheduling according to the mapping opportunities of the multiple groups of OSU ports;

The insertion module 56 is used to insert the service or IDLE frame of the target OSU port into the OPUk payload block corresponding to the target service port to obtain the target OPUk payload block;

The first generation module 58 is configured to insert the overhead of ODUk and OPUk into the target OPUk port to generate an ODUk frame for the ODU port corresponding to the target service port.

In one embodiment, the insertion module 56 is also used to determine whether the services of the multiple groups of OSU ports exist; if the determination result is yes, insert the services of the target OSU port into the corresponding target service port. In the OPUk payload block, the target OPUk payload block is obtained; when the judgment result is no, the IDLE frame is inserted into the OPUk payload block corresponding to the target service port, and the target OPUk payload block is obtained.

In one embodiment, the acquisition module 52 is also used to generate a mapping opportunity counter; count the mapping opportunities of the multiple groups of OSU ports through the mapping opportunity counter; and read the mapping opportunities from the mapping opportunity counter. Mapping opportunities for multiple sets of OSU ports.

In one embodiment, the device further includes:

A self-oscillation module, configured to perform time-division self-oscillation on the payload blocks in the OPUk payload area according to the time slot table, where the OPUk payload area includes multiple payload blocks;

a second generation module, configured to generate a payload block counter through the transmission cycle of the OPUk payload area;

A counting module, configured to count the time-division self-oscillating payload blocks through the payload block counter.

In one embodiment, the self-oscillation module is also used to read the time slot table based on the time slot corresponding to the payload block, and obtain the OPU port number, transmission cycle and service layer rate to which the time slot belongs; according to the The OPU port number, the transmission cycle and the service layer rate time-divisionally self-oscillate the corresponding payload block on the time slot.

In one embodiment, the device further includes:

An execution module, configured to perform the following steps on each group of OSU ports in the multiple groups of OSU ports to determine the mapping opportunities and corresponding payload blocks of the multiple groups of OSU ports. For the OSU port being executed, it is called the current OSU port group:

Get the mapping opportunity counter and payload block counter of all OSU ports in the current OSU port group;

Accumulate the mapping opportunities of all OSU ports in the current OSU port group according to the mapping opportunity counter, and count the payload blocks corresponding to all OSU ports in the current OSU port group according to the payload block counter;

If the timer value of the payload block is less than the transmission period, add 1 to the counter value of the payload block;

When the timer value of the payload block is not less than the transmission period, the transmission period is reset, and the counter value of the payload block is set to 1. If the mapping opportunity is greater than 0, all The mapping opportunity is set to 1. If the mapping opportunity is equal to 0, the mapping opportunity is set to 0;

Determine whether the following formula is true: j*CmodP<C, where j is the payload block, C is the service rate of the OSU port, and P is the transmission cycle;

If the judgment result is yes, add 1 to the mapping opportunity;

If the judgment result is no but the mapping opportunity is greater than 0, store the non-empty service queues of all OSU ports in the current OSU port group, the mapping opportunity counter M and the payload block counter j;

It is determined that the number of the current OSU port group is set to the current OSU port group plus 1, wherein the initial value of the number of the current OSU port group is 1.

In one embodiment, the determination module 54 is also used to determine whether the number of the current OSU port group reaches the number of the multiple groups of OSU ports; if the number of the current OSU port group reaches the number of the multiple groups of OSU ports, Number, when there are service queues in the multiple groups of OSU ports and the mapping opportunity is greater than 0, the target service is polled in the multiple groups of OSU ports according to the service priorities of the multiple groups of OSU ports. port, reduce the mapping opportunity of the target service port by 1; when there is no service queue in the multiple groups of OSU ports or the mapping opportunity is equal to 0, an invalid OSU port is generated.

Embodiments of the present application also provide a computer-readable storage medium that stores a computer program, wherein the computer program is configured to execute the steps in any of the above method embodiments when running.

In an exemplary embodiment, the computer-readable storage medium may include but is not limited to: U disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM) , mobile hard disk, magnetic disk or optical disk and other media that can store computer programs.

An embodiment of the present application also provides an electronic device, including a memory and a processor. A computer program is stored in the memory, and the processor is configured to run the computer program to perform the steps in any of the above method embodiments.

In an exemplary embodiment, the above-mentioned electronic device may further include a transmission device and an input-output device, wherein the transmission device is connected to the above-mentioned processor, and the input-output device is connected to the above-mentioned processor.

For specific examples in this embodiment, reference may be made to the examples described in the above-mentioned embodiments and exemplary implementations, and details will not be described again in this embodiment.

Obviously, those skilled in the art should understand that the above-mentioned modules or steps of the present application can be implemented using general-purpose computing devices, and they can be concentrated on a single computing device, or distributed across a network composed of multiple computing devices. They may be implemented in program code executable by a computing device, such that they may be stored in a storage device for execution by the computing device, and in some cases may be executed in a sequence different from that shown herein. Or the described steps can be implemented by making them into individual integrated circuit modules respectively, or by making multiple modules or steps among them into a single integrated circuit module. As such, the application is not limited to any specific combination of hardware and software.

The above descriptions are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the principles of this application shall be included in the protection scope of this application.

Claims (10)

1. A port service mapping processing method, wherein the method includes:

   Group multiple OSU ports to obtain multiple sets of OSU ports, and obtain mapping opportunities for the multiple sets of OSU ports respectively;

   Determine the target service port for scheduling according to the mapping opportunities of the multiple groups of OSU ports;

   Insert the service or IDLE frame of the target OSU port into the OPUk payload block corresponding to the target service port to obtain the target OPUk payload block;

   Insert the overhead of ODUk and OPUk into the target OPUk port to generate an ODUk frame of the ODU port corresponding to the target service port.
2. The method according to claim 1, wherein the service or IDLE frame of the target OSU port is inserted into the OPUk payload block corresponding to the target service port, and the target OPUk payload block is obtained by:

   Determine whether the services of the multiple groups of OSU ports exist;

   If the judgment result is yes, insert the service of the target OSU port into the OPUk payload block corresponding to the target service port to obtain the target OPUk payload block;

   If the judgment result is negative, the IDLE frame is inserted into the OPUk payload block corresponding to the target service port to obtain the target OPUk payload block.
3. The method according to claim 1, wherein respectively obtaining the mapping opportunities of the multiple groups of OSU ports includes:

   Generate mapping opportunity counter;

   Accumulate the mapping opportunities of the multiple groups of OSU ports through the mapping opportunity counter;

   Reading the mapping opportunities of the multiple groups of OSU ports from the mapping opportunity counter.
4. The method according to claim 1, wherein before obtaining the mapping opportunities of the plurality of groups of OSU ports respectively, the method further includes:

   Perform time-division self-oscillation on the payload blocks of the OPUk payload area according to the time slot table, wherein the OPUk payload area includes multiple payload blocks;

   Generate a payload block counter through the transmission cycle of the OPUk payload area;

   The time-divided self-oscillating payload blocks are counted by the payload block counter.
5. The method according to claim 4, wherein performing time-division self-oscillation on the payload block of the OPUk payload area according to the time slot table includes:

   Read the time slot table based on the time slot corresponding to the payload block, and obtain the OPU port number, transmission cycle and service layer rate to which the time slot belongs;

   The corresponding payload block is time-division self-oscillated on the time slot according to the OPU port number, the transmission cycle and the service layer rate.
6. The method according to any one of claims 1 to 5, wherein before determining the target service port for scheduling according to the mapping opportunities of the multiple groups of OSU ports, the method further includes:

   Perform the following steps on each group of OSU ports in the multiple groups of OSU ports to determine the mapping opportunities and corresponding payload blocks of the multiple groups of OSU ports. The OSU port being executed is called the current OSU port group:

   Get the mapping opportunity counter and payload block counter of all OSU ports in the current OSU port group;

   Accumulate the mapping opportunities of all OSU ports in the current OSU port group according to the mapping opportunity counter, and count the payload blocks corresponding to all OSU ports in the current OSU port group according to the payload block counter;

   If the timer value of the payload block is less than the transmission period, add 1 to the counter value of the payload block;

   When the timer value of the payload block is not less than the transmission period, the transmission period is reset, and the counter value of the payload block is set to 1. If the mapping opportunity is greater than 0, all The mapping opportunity is set to 1. If the mapping opportunity is equal to 0, the mapping opportunity is set to 0;

   Determine whether the following formula is true: j*CmodP<C, where j is the payload block, C is the service rate of the OSU port, and P is the transmission cycle;

   If the judgment result is yes, add 1 to the mapping opportunity;

   If the judgment result is no but the mapping opportunity is greater than 0, store the non-empty service queues of all OSU ports in the current OSU port group, the mapping opportunity counter M and the payload block counter j;

   It is determined that the number of the current OSU port group is set to the current OSU port group plus 1, wherein the initial value of the number of the current OSU port group is 1.
7. The method according to claim 6, wherein determining the target service port for scheduling according to the mapping opportunities of the multiple groups of OSU ports includes:

   Determine whether the number of the current OSU port group reaches the number of the multiple groups of OSU ports;

   If the number of the current OSU port group reaches the number of the multiple groups of OSU ports, and there are service queues in the multiple groups of OSU ports and the mapping opportunity is greater than 0, the service priority of the multiple groups of OSU ports is The stage polls the target service port among the multiple groups of OSU ports or randomly polls the target service port among the multiple groups of OSU ports, and decreases the mapping opportunity of the target service port by 1;

   When there is no service queue in any of the multiple groups of OSU ports or the mapping opportunity is equal to 0, an invalid OSU port is generated.
8. A port service mapping processing device, wherein the device includes:

   The acquisition module is configured to group multiple OSU ports, obtain multiple groups of OSU ports, and obtain mapping opportunities for the multiple groups of OSU ports respectively;

   A determination module configured to determine the target service port for scheduling according to the mapping opportunities of the multiple groups of OSU ports;

   An insertion module configured to insert the service or IDLE frame of the target OSU port into the OPUk payload block corresponding to the target service port to obtain the target OPUk payload block;

   The first generation module is configured to insert the overhead of ODUk and OPUk into the target OPUk port to generate an ODUk frame of the ODU port corresponding to the target service port.
9. A computer-readable storage medium in which a computer program is stored, wherein the computer program is configured to execute the method described in any one of claims 1 to 7 when running.
10. An electronic device includes a memory and a processor, a computer program is stored in the memory, and the processor is configured to run the computer program to perform the method described in any one of claims 1 to 7.