WO2023246471A1

WO2023246471A1 - Service data transmission method, and device, electronic device and storage medium

Info

Publication number: WO2023246471A1
Application number: PCT/CN2023/097960
Authority: WO
Inventors: 刘峰; 汪硕; 黄玉东
Original assignee: 中兴通讯股份有限公司
Priority date: 2022-06-22
Filing date: 2023-06-02
Publication date: 2023-12-28
Also published as: CN117319163A

Abstract

The present application relates to the technical field of communications. Provided are a service data transmission method, and a device, an electronic device and a storage medium. The method comprises: adjusting a second transmission parameter according to a first transmission parameter and a preset parameter mapping relationship, so as to obtain a transmission parameter to be used, wherein the first transmission parameter is a parameter which is sent by a device of a first network, and the second transmission parameter is a transmission parameter of a device of a second network, the first network and the second network being two communication networks having different transmission delays; and in response to service data which is sent by the device of the first network, transmitting the service data in the second network according to the transmission parameter to be used.

Description

Business data transmission methods and equipment, electronic equipment and storage media

Cross-references to related applications

This application claims priority from Chinese patent application No. 202210710778.6 submitted on June 22, 2022. The content of this Chinese patent application is incorporated herein by reference in its entirety.

Technical field

This application relates to the field of communication technology, and specifically to a business data transmission method and device, electronic equipment and storage media.

Background technique

Traditional communication networks mostly use best-effort transmission to transmit business data, but there are problems with uncontrollable transmission delay and transmission jitter. With the application and development of communication technology in the industrial field and the Internet of Vehicles, higher requirements have been put forward for the transmission delay and transmission jitter of business data.

For example, factories in different geographical areas require precise and delay-controlled data transmission, and wide area networks have the characteristics of large transmission bandwidth, wide coverage, and the inability to synchronize the time of the entire network. If the data in the local area network of a factory is Transmission via the WAN reduces the controllability of the transmission delay of data in the WAN, making it impossible to achieve cross-domain remote industrial control requirements and hindering the development of the industrial field.

Contents of the invention

The present application provides a method of transmitting service data, which is applied to the equipment of the second network. The method includes: adjusting the second transmission parameter according to the first transmission parameter and the preset parameter mapping relationship to obtain the transmission parameter to be used, wherein, The first transmission parameter is a parameter sent by a device of the first network, the second transmission parameter is a transmission parameter of a device of the second network, and the first network and the second network are two communication networks with different transmission delays; according to the parameter mapping relationship The second transmission parameter is adjusted with the first transmission parameter to obtain the transmission parameter to be used; in response to the service data sent by the device of the first network, the service data is transmitted in the second network according to the transmission parameter to be used.

The present application provides a service data transmission method, which is applied to the equipment of the first network. The method includes: sending the first transmission parameters to the equipment of the second network, so that the equipment of the second network can use the first transmission parameters and the preset parameters. The parameter mapping relationship adjusts the second transmission parameter to obtain the transmission parameter to be used, where the first network and the second network are two communication networks with different transmission delays, and the second transmission parameter is the transmission parameter of the device of the second network. ; Send service data to the device of the second network, so that the device of the second network transmits the service data in the second network according to the transmission parameters to be used.

This application provides a transmission device for service data. The transmission device for service data is a device in a second network. It includes: an edge period shaper configured to configure the second transmission parameter according to the first transmission parameter and a preset parameter mapping relationship. The transmission parameters are adjusted to obtain the transmission parameters to be used, where the first transmission parameter is the parameter sent by the first network, the second transmission parameter is the transmission parameter of the device of the second network, and the first network and the second network are the transmission delay Two different communication networks; the transmission module is configured to respond to the service data sent by the device of the first network and transmit the service data in the second network according to the transmission parameters to be used.

The present application provides a service data transmission device. The service data transmission device is a device in a first network. It includes: a first sending module configured to send a first transmission parameter to a device in a second network for the third time. The equipment of the second network adjusts the second transmission parameter according to the first transmission parameter and the preset parameter mapping relationship to obtain the transmission parameters to be used, where the first network and the second network are two communication networks with different transmission delays. The second transmission parameter is a transmission parameter of the device of the second network; the second sending module is configured to send service data to the device of the second network, so that the device of the second network transmits in the second network according to the transmission parameters to be used. business data.

The present application provides an electronic device, including: one or more processors; a memory on which one or more computer programs are stored, and the one or more computer programs are executed by one or more processors, so that one or more The processor implements any service data transmission method in the embodiments of this application.

This application provides a computer-readable storage medium. The computer-readable storage medium The computer program is stored in the mass, and the computer program is executed by the processor to implement any one of the service data transmission methods in the embodiments of the present application.

Regarding the above and other aspects of the application and the manner in which it may be implemented, further description is provided in the description of the drawings, the detailed description and the claims.

Description of the drawings

Figure 1 shows a schematic diagram of service data transmission between different devices provided by an embodiment of the present application.

FIG. 2 shows a schematic flowchart of a service data transmission method provided by an embodiment of the present application.

FIG. 3 shows a schematic diagram of service data transmission by a buffered data queue in the first network provided by an embodiment of the present application.

Figure 4 shows a schematic diagram of service data transmission between devices in the second network provided by an embodiment of the present application.

FIG. 5 shows a schematic flowchart of a method for generating node configuration information in a second network provided by an embodiment of the present application.

Figure 6 shows a schematic diagram of service data transmission between the tail node device of the first network and the head node device of the second network provided by the embodiment of the present application.

Figure 7 shows a schematic flowchart of a service data transmission method provided by yet another embodiment of the present application.

Figure 8 shows a schematic flow chart of forwarding service data between the first network and the second network provided by an embodiment of the present application.

Figure 9 shows a schematic flow chart of forwarding service data between the first network and the second network provided by yet another embodiment of the present application.

Figure 10 shows a block diagram of a service data transmission device provided by an embodiment of the present application.

Figure 11 shows a block diagram of a service data transmission device provided by yet another embodiment of the present application.

FIG. 12 shows a structural diagram of an exemplary hardware architecture of a computing device capable of implementing the business data transmission method and apparatus according to embodiments of the present application.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application more clear, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

Traditional Ethernet technology is based on a best-effort approach to transmitting business data to terminals, but this approach tends to increase the transmission delay and jitter of business data. With the use of Ethernet technology in the industrial field and the Internet of Vehicles, the transmission delay of business data needs to be more accurately controlled to meet the needs of different terminals.

Figure 1 shows a schematic diagram of service data transmission between different devices provided by an embodiment of the present application. As shown in Figure 1, service data is transmitted from the first device 110 to the second device 120, and then to the fourth device 140 through the third device 130, thereby completing the transmission of service data between different devices.

When a certain device (for example, the second device 120) is processing service data, the service data needs to be processed by the table lookup module 121, the speed limit module 122, the queue entry module 123, the cache module 124 and the scheduling module 125 in sequence. The device 120 can finish processing the business data.

Moreover, when each device processes business data, it needs to go through the above-mentioned modules (such as table lookup module 121, speed limit module 122, queue entry module 123, cache module 124, and scheduling module 125). The time of data is different, and the processing time of each internal module is also different, so it is impossible to specifically determine the length of delay time of business data in each device.

In some network systems, such as networks based on automated production equipment in an industrial park and networks corresponding to Internet of Vehicles systems, Ethernet technology will be used to replace the original bus network to support higher data transmission. rate. However, with time-sensitive application services such as smart grids, remote surgery technology, and remote industrial control technology, when data in a certain local area network is transmitted to other local area networks, a wide area network is required for data forwarding, and in a wide area network , is a network built using the Internet Protocol (IP). The network bandwidth in the wide area network is usually above 10G bits per second (bps). The network spans hundreds of kilometers and the transmission delay is It is very large and cannot achieve time synchronization of various devices in the network like a local area network. Therefore, if local area networks and wide area networks are used for joint networking, it will be difficult to achieve end-to-end comprehensive scheduling and cannot meet cross-domain requirements such as information interconnection and remote industrial control of factory networks between different physical areas. Accurate and controllable transmission delays deterministic application requirements.

Embodiments of the present application provide a service data transmission method and device, an electronic device, and a storage medium to solve the above problems.

FIG. 2 shows a schematic flowchart of a service data transmission method provided by an embodiment of the present application. The service data transmission method can be applied to service data transmission equipment.

As shown in Figure 2, the service data transmission method in the embodiment of the present application includes but is not limited to the following steps S120 to S220.

In step S210, the second transmission parameter is adjusted according to the first transmission parameter and the preset parameter mapping relationship to obtain the transmission parameter to be used.

The first transmission parameter is a parameter sent by a device of the first network, the second transmission parameter is a transmission parameter of a device of the second network, and the first network and the second network are two communication networks with different transmission delays. The preset parameter mapping relationship is a mapping relationship determined based on the first transmission parameter and the second transmission parameter of the device of the second network. For example, the proportional relationship between the first transmission bandwidth of the first network and the second transmission bandwidth of the second network is used as the parameter mapping relationship, or the first transmission delay of the first network and the third transmission bandwidth of the second network are used as the parameter mapping relationship. The proportional relationship between the two transmission delays serves as the parameter mapping relationship, thereby facilitating adjustment of the corresponding transmission parameters in the second network based on different parameter mapping relationships to obtain the transmission parameters to be used.

In some embodiments, the above-mentioned first network may be a local area network, the device of the first network may be a node device, and the first transmission parameter may be a first transmission period, a first transmission bandwidth, etc.; the second network may be a wide area network, and the second network may be a wide area network. The device of the network may be a server or node device in the wide area network, etc., and the second transmission parameter may be the second transmission cycle and the second transmission bandwidth used in the wide area network, etc.

For example, the parameter mapping relationship may include: a cycle mapping relationship and/or a bandwidth mapping relationship. The cycle mapping relationship is the mapping relationship between the transmission cycle of the local area network and the transmission cycle of the wide area network. The bandwidth mapping relationship is the transmission bandwidth of the local area network and the transmission bandwidth of the wide area network. the mapping relationship between them.

In step S220, in response to the service data sent by the device of the first network, according to The transmission parameters are to be used to transmit service data in the second network.

In this embodiment, the transmission parameters to be used are obtained by adjusting the second transmission parameters according to the first transmission parameters and the preset parameter mapping relationship, so that the transmission parameters to be used can match the first transmission parameters, thereby improving data The transmission delay in the second network is controllable; thus, after receiving the service data sent by the device of the first network, the service data can be transmitted in the second network according to the transmission parameters to be used to achieve cross-domain, Data transmission with controllable transmission delay meets the industrial needs of high time accuracy and promotes the development of the industrial field.

In some embodiments, the devices of the first network include a tail node device and a plurality of first devices, the devices of the second network include a head node device and a plurality of second devices, and the tail node device is communicatively connected with the head node device.

A time synchronization mechanism is used for communication between multiple first devices and between the tail node device and the first node device.

For example, FIG. 3 shows a schematic diagram of the cache data queue in the first network transmitting service data provided by an embodiment of the present application. As shown in Figure 3, the devices of the first network include: device A, device B, device C and device D. During the transmission process, business data is transmitted to device B via device A, and then to device D via device C, thus completing the transmission of business data between different devices.

Device D can be used as the tail node device, device A, device B, and device C can be used as the first device in the first network, and device A, device B, device C, and device D communicate using a time synchronization mechanism.

Through the communication method of the time synchronization mechanism, each device in the first network can be time synchronized, reducing the data transmission delay between different devices, and ensuring that data can be accurately and quickly transmitted between different devices.

It should be noted that each first device has two cache data queues, the working states of the entry gate control of the two cache data queues are mutually exclusive, and the working states of the dequeue gate control of the two cache data queues are mutually exclusive. The working status of the enqueuing gate and the working status of the dequeuing gate of a cache data queue are mutually exclusive, and the working status includes an open state or a closed state.

For example, the cache data queues may be queue 1 and queue 2 as shown in Figure 3. Among them, both queue 1 and queue 2 can be set at the output port of each device.

When queue 1 and queue 2 perform data transmission, the transmission time can be divided into multiple equal time intervals. Each time interval can be used as a time period T (that is, the preset transmission period). The time period T includes: even periods T0 and odd period T1.

As shown in Figure 3, in the even-numbered period T0, the status of the queue entry gate control of queue 1 is "on" (that is, the open state), and the status of the queue entry gate control of queue 2 is "off" (that is, the closed state). The status of the dequeue gate of queue 1 is "off" (ie, closed state), and the status of the dequeue gate of queue 2 is "on" (ie, open state).

In the odd period T1, the status of the entry gate of queue 1 is "off" (i.e. closed state), the status of the entry gate of queue 2 is "open" (i.e. open state); the status of queue 1's exit gate The status of the gate control is "on" (that is, the open status), and the status of the dequeue gate control of queue 2 is "off" (that is, the closed status).

Through the above settings, two cached data queues can be used to transmit data packets at any time, that is, one cached data queue (for example, queue 1) is used to receive data packets, and the other cached data queue (for example, queue 2) Used to send data packets to improve the transmission efficiency of data packets.

When it is determined that the status of the enqueue gate is open, the cache data queue is used to store business data; when it is determined that the status of the dequeue gate is open, the cache data queue is used to output business data; in advance It is assumed that during the transmission period, the working status of the in-queue gate and the working status of the out-queue gate remain unchanged.

It should be noted that when a preset transmission cycle ends and enters the next preset transmission cycle (for example, the even-numbered period T0 ends and the odd-numbered period T1 is entered), the entry gate and the exit gate will be controlled at this time. Switch the state (for example, switch the gate that was originally in the closed state to the open state; switch the gate that was originally in the open state to the closed state), so that the two cache data queues can alternately perform enqueue operations and dequeue operations. Operation, so that the data message sent by the upstream node device is sent to the downstream node device within a preset transmission period, and the downstream node device receives the data message within the same preset transmission period and sends the data message to the downstream node device. The data packet is forwarded.

Multiple devices in the first network are all time synchronized, and the transmission time of each device can be strictly controlled so that each device can send or forward data within a fixed time period, and, Each device will delay for a time period, and then Forward the received data packets.

The end-to-end time delay of the data packet on the first network only depends on the size of the preset time period T and the number H of devices transmitting the data packet in the first network. Therefore, the value range of the total delay time for the data packet to be transmitted from the source device to the sink device in the first network is: {(H-1)*T, (H+1)*T}.

Among them, H is an integer greater than or equal to 1 and less than the preset number; T is a real number greater than 0. The preset quantity is the number of devices that meet the preset separation distance (eg, 5 meters or 8 meters, etc.). The first network has a smaller coverage area. For example, the first network may be a local area network or a metropolitan area network.

(H-1)*T means: the data message is sent by the source device at the end of time period T, and is forwarded and output by the sink device at the beginning of time period T;

(H+1)*T means: the data packet is sent at the beginning of the time period T on the source device, but is forwarded and output by the sink device at the end of the time period T.

During the preset transmission period, the working status of the in-queuing gate control and the working status of the out-queuing gate control remain unchanged, and the working status of the gate control is switched regularly, so that the devices in the first network can realize Data transmission with deterministic transmission delay can meet the bounded transmission delay jitter requirements between various devices in the first network.

In some implementations, by applying Time-Sensitive Network (TSN) technology to the first network, deterministic transmission of service data can be achieved. The working principle of TSN technology is suitable for configuring the global scheduling schedule. Transmitting business data through fixed time slice scheduling can reduce network congestion and uncertainty caused by queuing delays in data transmission queues.

It should be noted that the distance between all devices in the first network is limited, and the networking method of the first network is only suitable for small-scale networking (for example, local area network or metropolitan area network, etc.), so that the first network can be realized. Time synchronization between all devices in the network, that is, if the sending device sends certain service data to the receiving device within a certain preset transmission period, the receiving device can also receive the service data within the preset transmission period, This enables deterministic service data transmission with time synchronization between the sending device and the receiving device.

Figure 4 shows a schematic diagram of service data transmission between devices in the second network provided by an embodiment of the present application. As shown in Figure 4, the devices of the second network include: device D, Device E and Device F. For example, device D can be set as the head node device in the second network, and device E and device F can be set as second devices in the second network. The second network may be a wide area network.

A clock frequency synchronization mechanism is used for communication between multiple second devices, as well as between the first node device and the second device; and, the start time and end time of the transmission cycle of multiple second devices are different, but each time The transmission cycles of two second devices have the same length, and the switching frequency of the transmission cycles of multiple second devices is the same; each second device has multiple cache data queues, and the cache data queues are used to store the received upper-level data. For business data sent by network equipment, each cached data queue corresponds to a transmission cycle, and the working status of the cached data queues is determined based on polling between multiple cached data queues.

As shown in Figure 4, during the transmission process, service data needs to pass through device D, be transmitted to device E, and be forwarded by device E to device F.

It should be noted that although the start time and end time of the transmission cycle of each second device are different, when the clock frequency is the same, the switching frequency of the transmission cycle in each second device is the same. The number of switching transmission cycles is the same, and the frequency of switching is also the same. Multiple cache data queues can be set up in each second device, and the data packets are determined according to the time tag value carried by the data packet (such as "tag 1, tag 2 and tag 3" shown in Figure 4). Which cache data queue the document enters for caching.

By determining the working status of the cached data queue in a polling manner, all cached data queues in each second device (for example, device D or device E or device F, etc.) can change the working status in turn, improving the performance of the cached data queue. Work efficiency.

In some embodiments, the working status of the cached data queue includes: sending status or receiving status; within a preset period, the working status of only one cached data queue among the multiple cached data queues of each second device is the sending status. , the working status of other cached data queues is receiving status.

By periodically changing the working status of each queue in multiple cache data queues, the usage efficiency of each cache data queue can be improved, the transmission speed of business data can be improved, and the business data can be quickly transmitted to the next hop node. equipment.

It should be noted that each device in the second network can also plan the transmission path, delay, bandwidth and queue of the business data packets in advance according to the service requirements of the business data. resources, etc., by determining the cycle parameters of the transmission time, generating a forwarding cycle label for each device (label 1, label 2, label 3, etc. as shown in Figure 4), and distributing the forwarding cycle label to each device in the second network equipment to speed up the transmission of business data.

For example, as shown in Figure 4, tag 1, tag 2 and tag 3 are used to represent the identification of the node device through which the service data is transmitted and the corresponding cache data queue that receives the service data.

When device D transmits service data, it needs to encapsulate tag 1, tag 2, tag 3 and the message into a first message, and then send the first message to device E through the first sending queue 412. Tag 1 represents The first message needs to be received by a specified cache data queue in device E. The first sending queue 412 is a queue in the first receiving queue set 411 that receives the service data. At this time, the working state of the queue is the sending state.

When device E receives the first message, by identifying tag 1, it determines that the first message needs to be stored in its own cache data queue (for example, queue 2 in the second receiving queue set 421, etc.), and sets the tag 1 is removed, and then label 2, label 3 and the message are encapsulated into a second message; when the working state of queue 2 in the second receiving queue set 421 is the sending state (that is, queue 2 in the second receiving queue set 421 When changing to the second sending queue 422), the second message is forwarded to device F through the second sending queue 422. Label 2 is used to indicate that the second message needs to be received by a specified cache data queue in device F.

When device F receives the second message, by identifying tag 2, it determines that the second message needs to be stored in its own cache data queue (for example, queue 3 in the third receiving queue set 431, etc.), and sets the tag 2 is removed, and then label 3 and the message are encapsulated into a third message; when the working state of queue 3 in the third receiving queue set 431 is the sending state (that is, queue 3 in the third receiving queue set 431 changes to When the third sending queue 432 is configured, the third message is forwarded through the third sending queue 432 for reception by the next hop node device. The label 3 is used to indicate that the third message needs to be sent by a specified device F. Buffered data queue (for example, queue 4) receives.

By changing the working status of the cached data queue and identifying the corresponding tags, each device can forward service data within a fixed time period to achieve end-to-end fixed-delay service data transmission.

The clock frequencies of all devices in the second network are synchronized, and the time conversion cycles of all devices are the same. The switching speeds of the working states of the cached data queues are also the same, and the clock frequencies of all cached data queues corresponding to the devices in the second network are also the same. Both the receiving state and the sending state change according to a fixed frequency. The service data message is forwarded through each device in the second network, and the forwarding delay time can be controlled. That is, the service data message is forwarded from the source node in the second network. The transmission process from the device to the sink node device is a data forwarding process with end-to-end deterministic delay.

In some embodiments, the preset parameter mapping relationship includes: period mapping relationship and bandwidth mapping relationship, the first transmission parameter includes the first transmission period and/or the first transmission bandwidth, the second transmission parameter includes the second transmission period and/or or second transmission bandwidth.

In step S210, before adjusting the second transmission parameter according to the first transmission parameter and the preset parameter mapping relationship to obtain the transmission parameter to be used, it also includes:

The cycle mapping relationship is determined based on the first transmission cycle and the second transmission cycle; and/or the bandwidth mapping relationship is determined based on the first transmission bandwidth and the second transmission bandwidth.

The period mapping relationship can be expressed by period conversion factors. For example, the cycle mapping relationship is determined based on the proportional relationship between the first transmission cycle and the second transmission cycle. The cycle mapping relationship may include a cycle conversion factor, for example, cycle conversion factor c = first transmission cycle/second transmission cycle.

The bandwidth mapping relationship can be represented by a bandwidth conversion factor. For example, the bandwidth mapping relationship is determined based on the proportional relationship between the first transmission bandwidth and the second transmission bandwidth. The bandwidth mapping relationship may include a bandwidth conversion factor, for example, bandwidth conversion factor b=first transmission bandwidth/second transmission bandwidth.

It should be noted that when determining the preset parameter mapping relationship, only the period mapping relationship can be determined, or only the bandwidth mapping relationship can be determined, or both mapping relationships can be calculated simultaneously to meet the testing needs in different application scenarios. .

Through the above-mentioned period mapping relationship and/or bandwidth mapping relationship, the bandwidth difference and the transmission period difference between the first network and the second network can be truly reflected, and the equipment of the second network can timely adjust the second network based on the above-mentioned difference. The transmission cycle and transmission bandwidth of each device are improved to improve the transmission efficiency of business data.

In some implementations, according to the first transmission parameter and the preset parameter mapping relationship Adjust the second transmission parameters to obtain the transmission parameters to be used, including: determining the reserved time domain resources according to the period mapping relationship, adjusting the second transmission period according to the reserved time domain resources and the first transmission period, and obtaining the transmission parameters to be used. period; and/or, determine the reserved bandwidth resources according to the bandwidth mapping relationship, adjust the second transmission bandwidth according to the reserved bandwidth resources and the first transmission bandwidth, and obtain the transmission bandwidth to be used.

The reserved time domain resources may include: time slice length, or the number of reserved transmission cycles corresponding to the cycle mapping relationship, etc. The reserved bandwidth resources may include: reserved bandwidth length corresponding to the bandwidth mapping relationship, etc.

For example, the reserved time domain resources can be determined only through the periodic mapping relationship, so that the reserved time domain resources represent the transmission difference between the first network and the second network, and then the second transmission cycle can be adjusted to The transmission period to be used is obtained, so that the transmission period in the second network is more suitable for data transmission.

For example, the reserved bandwidth resources can also be determined only through the bandwidth mapping relationship, so that the reserved bandwidth resources represent the difference in bandwidth between the first network and the second network, and then the reserved bandwidth resources and the first network can be determined based on the bandwidth mapping relationship. The transmission bandwidth adjusts the second transmission bandwidth so that the obtained transmission bandwidth to be used can meet the transmission requirements of data in the second network, and the data can be transmitted faster and more efficiently through different transmission bandwidths.

For example, the second transmission cycle and the second transmission bandwidth can also be adjusted simultaneously so that the transmission environment in the second network meets the transmission requirements. By adjusting the second transmission period based on the reserved time domain resources and the first transmission period, the obtained transmission period to be used can be more suitable for the network environment in the second network, so that the first network and the second network can devices can achieve time synchronization. And, based on the reserved bandwidth resources and the first transmission bandwidth, the second transmission bandwidth is adjusted so that the obtained transmission bandwidth to be used can accurately map and match the transmission bandwidth of the first network and the transmission bandwidth of the second network, Facilitate the transmission of business data and improve transmission efficiency.

In some embodiments, the equipment of the second network includes the head node equipment; adjusting the second transmission bandwidth according to the reserved bandwidth resources and the first transmission bandwidth to obtain the transmission bandwidth to be used includes: according to the reserved bandwidth resources and the first transmission bandwidth Transmission bandwidth, adjust the second transmission bandwidth of the first node device, and obtain the transmission bandwidth corresponding to the first node device to be used.

The head node device is a device connected to the tail node device of the first network.

Because the transmission bandwidth of the first network and the second network are different, for example, if the transmission bandwidth of the first node device of the second network is 10Gbps and the transmission bandwidth of the first network is 1Gbps, there will be a big bandwidth difference between the two networks. , it is easy to cause packet loss or data errors during the transmission process of business data. Therefore, the transmission bandwidth of the first node device needs to be adjusted first so that the first node can use the reserved bandwidth resources and the first transmission bandwidth. Adjust the second transmission bandwidth of the first node device to obtain the transmission bandwidth to be used corresponding to the first node device, so that the transmission bandwidth to be used can adapt to the transmission requirements of the second network.

For example, if the reserved bandwidth resource is b times the hard slicing bandwidth, the transmission bandwidth to be used may be determined to be a second transmission bandwidth that is (1-b) times. b is the bandwidth conversion factor.

In some implementations, the device of the second network includes a head node device and a plurality of second devices.

Adjusting the second transmission cycle based on the reserved time domain resources and the first transmission cycle to obtain the transmission cycle to be used includes: determining the transmission cycle label of the head node device based on the reserved time domain resources and the first transmission cycle; Set the label mapping relationship and the transmission cycle label of the first node device to determine the transmission cycle labels of multiple second devices respectively; determine the transmission cycle to be used based on the forwarding cycle label of the first node device and the transmission cycle labels of multiple second devices.

The preset label mapping relationship is used to characterize the transmission cycle mapping relationship between the head node device and its connected second device and the transmission cycle mapping relationship between multiple second devices.

The transmission cycle mapping relationship between the first node and the second device connected to it can be characterized by the reserved time domain resources. For example, if the reserved time domain resources are c times the second transmission cycle, then the first node device can be determined The transmission period to be used is (1-c) times the second transmission period, so that the head node device can achieve time synchronization with the tail node device of the first network. Further, based on the transmission period to be used of the head node device, the transmission periods to be used of other second devices are calculated.

For example, if the second transmission period is 10ms, the first transmission period is 1ms, and the reserved time domain resources are (10*c)ms, then the transmission period to be used by the first node device is (1-c)*10ms, and the corresponding , the transmission periods to be used of other second devices are delayed by (10*c) ms in turn based on the transmission periods to be used and the second transmission period of the first node device.

Through the transmission period to be used of the first node device determined above and multiple second devices The transmission cycle to be used corresponds to generating a transmission cycle label for each device in the second network, so that the transmission cycle label of each device in the second network can represent the period in which each device needs to transmit data, so that each device can be based on The business data is transmitted at a deterministic time, reducing the transmission delay, so that the business data can be transmitted quickly and accurately in the second network.

In some embodiments, the service data includes at least two service data messages; based on the reserved time domain resources and the first transmission cycle, determining the transmission cycle label of the head node device includes: determining that transmission is required within the first transmission cycle In the case of at least two service data messages, assign corresponding forwarding transmission periods to at least two service data messages according to the reserved time domain resources, and obtain the identification of at least two forwarding and transmission periods; according to at least two forwarding and transmission periods The identification of the transmission cycle determines the transmission cycle label of the first node.

According to the reserved time domain resources, corresponding forwarding and transmission cycles are allocated to at least two service data packets, so that at least two service data packets can transmit data in the corresponding forwarding and transmission cycles respectively, avoiding different transmission cycles. Interference between business data reduces the transmission error ratio of business data and improves the transmission efficiency of business data.

It should be noted that the identification of the forwarding transmission cycle can represent the specific transmission cycle in which different service data needs to be transmitted, so that the first node device can reasonably allocate transmission cycle resources and determine the transmission cycle label of the first node device.

In some embodiments, determining the transmission cycle label of the head node device based on the reserved time domain resources and the first transmission cycle includes: allocating at least two received service data packets based on the reserved time domain resources. One forwarding transmission cycle, and the transmission cycle label of the head node device is obtained.

At least two service data packets are packets received sequentially within at least two first transmission cycles.

Allocating a forwarding transmission cycle for at least two received business data packets based on reserved time domain resources can save time domain resources, enable more business data to be transmitted, and improve the transmission efficiency of business data.

In some embodiments, in response to the service data sent by the device of the first network, transmitting the service data in the second network according to the transmission parameters to be used includes: the first node device constructs according to the service data and the transmission cycle tag of the second device. transmit a message; to and from the first section The second device connected to the point device sends a transmission message, so that the second device determines the cache data queue identifier based on the transmission cycle tag in the transmission message, and stores the service data in the cache data queue corresponding to the cache data queue identifier; after determining the cache When the working state of the cached data queue corresponding to the data queue identifier is the sending state, the service data is forwarded to other second devices.

It should be noted that each second device includes multiple cache data queues, and the working status of each cache data queue changes in a polling manner, and in the same transmission cycle, only one cache data queue is working. The status is the sending state. Therefore, when the working status of a cached data queue is the receiving state, it can receive business data sent by other node devices (such as the first node device or other second devices, etc.); when the working status of the cached data queue The received business data will only be forwarded when the status is in the sending state.

Moreover, the transmission cycle label of the second device can indicate which second devices the service data sent by the first node device needs to pass through, so that the service data can be quickly and accurately transmitted in the second network based on the transmission cycle label of the second device. Improve the transmission efficiency of business data.

In some embodiments, adjusting the second transmission parameter according to the first transmission parameter and the preset parameter mapping relationship, and before obtaining the transmission parameter to be used, further includes: obtaining the transmission delay duration in the first network; before determining the first transmission parameter. When the transmission delay time in the network is not within the preset delay time range, and the service data sent by the device of the first network needs to be transmitted in the second network, it is determined that the second transmission parameter of the second network needs to be adjusted. .

The transmission delay length is a length determined based on the number of devices in the first network and the first transmission cycle; the number of devices in the first network includes: the number of first devices through which business data passes when transmitted in the first network.

It should be noted that the preset delay duration range is a range determined based on the number of second devices through which the service data is transmitted in the second network and the second transmission cycle.

By obtaining the transmission delay duration in the first network, the difference between the transmission delay duration in the first network and the preset delay duration in the second network can be clarified, thereby determining that the transmission delay duration in the first network is not the preset delay duration. Within the scope, and the service data sent by the equipment of the first network needs to be transmitted in the second network, it is determined that the The second transmission parameters of the second network are adjusted so that the adjusted second transmission parameters can meet the transmission requirements of the service data transmitted in the second network, speed up the transmission speed of the service data in the second network, and enable the service data to be transmitted. Transmission is performed in the second network based on a deterministic transmission duration.

FIG. 5 shows a schematic flowchart of a method for generating node configuration information in the second network provided by an embodiment of the present application. As shown in Figure 5, the method of generating node configuration information in the second network includes but is not limited to the following steps S501 to S506. .

In step S501, the device of the second network determines the bandwidth requirement and delay requirement for end-to-end transmission of the service data based on the cross-domain application requirements of the service.

For example, service data sent by a device on the first network needs to be transmitted through the second network. Based on the characteristics of the service data, the transmission bandwidth and transmission cycle size required to transmit the service data in the second network are determined.

The first transmission parameters of the first network include a first transmission period and a first transmission bandwidth, and the second transmission parameters of the second network include a second transmission period and a second transmission bandwidth.

For example, if the first network is a local area network and the second network is a wide area network, the size of the transmission cycle and the transmission delay requirement information in the wide area network can be determined according to the application needs of the devices in the local area network for transmitting business data.

In step S502, the device of the second network determines a cycle mapping relationship based on the first transmission cycle and the second transmission cycle, and determines reserved time domain resources based on the cycle mapping relationship.

For example, the forwarding time of business data can be divided into equal time intervals, and each time interval is called a transmission cycle. In the first network, the size of the first transmission period may be set to be greater than the sum of link delay, processing delay, transmission delay and queuing delay, where the link delay is negligibly zero.

In the second network, since link delays between different devices vary, the size of the second transmission period in the second network is approximately equal to the quotient of the maximum queue length divided by the transmission bandwidth, where the link delay Not counted.

Based on the different calculation methods of the transmission cycles of the first network and the second network, the time domain resources that need to be reserved (for example, the time slice length, or the number of transmission cycles, etc.) can be determined through the cycle mapping relationship. Thus, the transmission cycles of the first network and the second network can Alignment to facilitate subsequent transmission of business data.

For example, set the transmission cycle of the LAN to CL, and set the transmission cycle of the WAN to CW, so that the cycle conversion factor can be calculated: c=CL/CW, so that the first node device of the WAN can use its egress port as the egress port of the LAN. Reserve c times the time slice length.

In step S503, the device of the second network determines the bandwidth mapping relationship based on the first transmission bandwidth and the second transmission bandwidth, determines the reserved bandwidth resources based on the bandwidth mapping relationship, and then determines the reserved bandwidth resources based on the reserved bandwidth resources and the first transmission bandwidth. The bandwidth adjusts the second transmission bandwidth to obtain the transmission bandwidth to be used that can be used in the second network.

For example, an edge period shaper may be set in the head node device of the second network. The edge period shaper is used to determine the bandwidth mapping relationship based on the first transmission bandwidth and the second transmission bandwidth, and determine the reservation through the bandwidth mapping relationship. bandwidth resources to implement mapping of transmission parameters between the first network and the second network.

For example, the first network is a LAN and the second network is a WAN. The transmission bandwidth of the LAN is usually less than 1Gbps, while the transmission bandwidth of the WAN exceeds 10Gbps. The mismatch in transmission bandwidth will lead to problems such as unequal transmission delays and network interface congestion. Therefore, the transmission bandwidth between the LAN and the WAN needs to be mapped to facilitate the transmission of business data in the WAN.

You can set the link bandwidth of the LAN egress port to BWL, and set the link bandwidth of the WAN egress port to BWW. Then you can calculate the bandwidth conversion factor: b = BWL/BWW, so that the first node device of the WAN can Reserve b times the hard slicing bandwidth at the port for the outgoing port of the LAN.

In step S504, the device of the second network obtains the sending time when the first network sends the service data, and determines the receiving time when the device of the second network receives the service data based on the sending time and the reserved time domain resources.

According to the cycle mapping relationship in step S502 and the bandwidth mapping relationship in step S503, the sending time of the tail node device in the local area network when sending the service data can be clarified, and then the receiving time when the device of the second network receives the service data can be determined. .

In step S505, the device of the second network generates a periodic label according to the reception time when the device of the second network receives the service data.

The periodic label includes the label value of the first node device of the second network and the Tag values corresponding to multiple second devices. Different tag values are used to represent the identities of different cache data queues in which the second device stores the service data it receives.

In step S506, the head node device of the second network sends the generated periodic tag to each second device in the second network, so that each second device can sequentially transmit service data based on the obtained corresponding tag value. .

In some embodiments, when the tail node device in the second network finally receives the service data, it needs to forward the service data to a target device of the same type as the device in the first network.

For example, the second network is a wide area network, and the tail node device of the wide area network needs to transmit service data to a device in a certain metropolitan area network. At this time, the metropolitan area needs to be determined based on the sending time of the service data sent by the tail node device of the wide area network. The reception time of the first node device in the network is so that the first node device in the metropolitan area network can receive the service data in time to avoid the loss of service data and improve the security of data transmission.

It should also be noted that if the target device is a non-first node device in the metropolitan area network, it is also necessary to determine the connected metropolitan area network based on the forwarding time of the first node device in the metropolitan area network to forward the service data. The reception time of other devices receiving the service data is determined so that the service data can be transmitted smoothly in the metropolitan area network, and finally the target device obtains the service data.

For example, determine at least one of the information such as the forwarding cycle, cycle label, and configuration bandwidth of each device in the metropolitan area network connected to the tail node device of the second network, and the service data in the second network (such as a wide area network). and deliver all the above configuration information to the corresponding device nodes, so that each device node can complete the transmission of business data based on the above configuration information, achieve end-to-end deterministic transmission of business data, and reduce transmission delay and transmission jitter. , improve data transmission efficiency.

Figure 6 shows a schematic diagram of service data transmission between the tail node device of the first network and the head node device of the second network provided by the embodiment of the present application. As shown in Figure 6, the tail node device 610 of the first network is connected to the head node device 620 of the second network.

The tail node device 610 of the first network includes: two data cache queues, and these two data cache queues are used for rotation training based on different time periods. For example, different data caches are used respectively in the even period T0 and the odd period T1. Queues transmit data. The first node device 620 of the second network includes an edge period shaper 621 and a sending queue 622 And multiple data cache queues (such as Q1, Q2, Q3, Q4, etc.).

The egress bandwidth of the tail node device 610 of the first network is 1Gbps, and the transmission cycle is 20 microseconds (us). Assuming that the size of each service data packet is 100 bytes, then the tail node device 610 of the first network The maximum queue depth of each data cache queue in is 25 business data packets;

The egress bandwidth of the first node device 620 of the second network is 10Gbps, including Q1, Q2, Q3 and Q4, with a total of 4 data cache queues and a transmission period of 10us. Assume that the size of each service data packet is 100Bytes. The maximum queue depth of each data cache queue in the head node device 620 of the network is 125 service data packets.

It should be noted that the edge period shaper 621 is used to obtain the egress bandwidth of the tail node device 610 of the first network and the egress bandwidth of the first node device 620 of the second network, and perform calculations based on the above two egress bandwidths to determine the bandwidth. Mapping relations. For example, the bandwidth mapping factor b=1Gbps/10Gbps=0.1 can be calculated; based on the bandwidth mapping factor, the head node device 620 of the second network reserves b times the hard slice bandwidth for the tail node device 610 of the first network.

Further, the edge cycle shaper 621 is also used to obtain the transmission cycle of the tail node device 610 of the first network and the transmission cycle of the head node device 620 of the second network, and perform calculations based on the above two transmission cycles to determine the cycle mapping. relation. For example, the cycle conversion factor c=20us/10us=2 can be calculated; based on the cycle conversion factor, the first node device 620 of the second network reserves c times the time slice length for the tail node device 610 of the first network ( That is, reserve two 10us transmission cycles).

Through the conversion of the transmission cycle and the mapping of the transmission bandwidth by the edge period shaper 621, the first node device 620 of the second network can be synchronized with the tail node device 610 of the first network, so that the transmission time of service data can be adjusted. Deterministic control of delay can reduce the delay time when transmitting business data between different types of equipment, realize cross-domain data transmission with controllable transmission delay, meet the industrial needs of high time accuracy, and promote the development of the industrial field. develop.

Figure 7 shows a schematic flowchart of a service data transmission method provided by yet another embodiment of the present application. The service data transmission method can be applied to service data transmission equipment. As shown in Figure 7, the service data transmission method in the embodiment of the present application includes but is not limited to the following steps: Steps S701 to S702.

In step S701, the first transmission parameter is sent to the device of the second network, so that the device of the second network can adjust the second transmission parameter according to the first transmission parameter and the preset parameter mapping relationship to obtain the transmission parameter to be used.

The first network and the second network are two communication networks with different transmission delays, and the second transmission parameter is the transmission parameter of the device of the second network.

The first transmission parameters may include: a first transmission period and a first transmission bandwidth, so that the device of the second network can learn the transmission period and transmission bandwidth of the device of the first network to facilitate subsequent processing.

In step S702, the service data is sent to the device of the second network, so that the device of the second network transmits the service data in the second network according to the transmission parameters to be used.

The business data needs to be forwarded by the equipment of the second network so that the equipment in different geographical locations and of the same type as the equipment of the first network can accurately obtain the data, which can meet the transmission of business data in different areas. Realize deterministic data transmission with controllable transmission delay.

It should be noted that the equipment of the second network can implement any of the service data transmission methods applied to the equipment of the second network in the embodiments of the present application, and the corresponding method steps will not be described again here.

In this embodiment, the first transmission parameter is sent to the device of the second network so that the device of the second network can adjust the second transmission parameter according to the first transmission parameter and the preset parameter mapping relationship to obtain the desired parameter. Using the transmission parameters can make the transmission parameters to be used match the first transmission parameters, improving the controllability of the transmission delay of data in the second network; sending service data to the equipment of the second network, so that the second network The equipment transmits business data in the second network according to the transmission parameters to be used, realizing cross-domain data transmission with controllable transmission delay, meeting the industrial needs of high time precision, and promoting the development of the industrial field.

Figure 8 shows a schematic flow chart of forwarding service data between the first network and the second network provided by an embodiment of the present application. As shown in Figure 8, the first local area network 801 includes node A, node B, and node C; the second local area network 802 includes node G, node H, and node I; and the wide area network 803 includes node D, node E, and node F. Node C is the first LAN 801 As for the tail node device, node D is the first node device of the wide area network 803, node F is the tail node device of the wide area network 803, and node G is the first node device of the second local area network 802.

The transmission cycles of the first LAN 801 and the second LAN 802 are both _TL ; and each node device in the first LAN 801 uses a time synchronization mechanism to communicate, and each node device in the second LAN 802 also communicates with each other. Use time synchronization mechanism for communication. Each node device in the wide area network 803 communicates using a clock frequency synchronization mechanism, and the forwarding cycle of the wide area network 803 is T _w . Correspondingly, the cycle conversion factor c= _TL / _Tw =2 between the first local area network 801 and the wide area network 803.

Before transmitting service data, it is also necessary to align the transmission cycle between the tail node device of the first local area network 801 (ie, node C) and the first node device of the wide area network 803 (ie, node D), and to align the WAN 803 The transmission cycle is aligned between the tail node device (ie, node F) and the head node device (ie, node G) of the second local area network 802.

For example, the reserved time domain resources are determined based on the cycle conversion factor c (for example, the first node device of the wide area network 803 reserves c times the time slice length for the tail node device of the first local area network 801); The domain resources and the first transmission cycle of the first local area network 801 adjust the second transmission cycle of the wide area network 803 to obtain the transmission cycle to be used. The transmission cycle to be used is used to enable each node device in the wide area network 803 to perform data transmission.

As shown in Figure 8, the square represents the egress data (i.e., the service data message to be transmitted corresponding to the device's egress), and the circle represents the ingress data (i.e., the device's inlet receives the service to be transmitted from the superior node). data message).

It should be noted that the transmission bandwidth of LAN 801 is different from the transmission bandwidth of WAN 803. For example, the transmission bandwidth of LAN 801 may be 1Gbps, while the transmission bandwidth of WAN 803 may be 10Gbps. Before data transmission between different networks, It is also necessary to perform corresponding conversions on the transmission bandwidth between the two networks. For example, use a preset bandwidth mapping relationship (for example, using one-tenth as the bandwidth mapping factor) to adjust the transmission bandwidth of the WAN 803, such as, You can first reserve a transmission bandwidth of 0.1*10Gbps=1Gbps, and then use (10-1)Gbps=9Gbps as the transmission bandwidth of WAN 803. To reduce data transmission deviation in WAN 803 and improve data transmission accuracy.

Node A will need to transmit two different service datagrams during the even period T0. Messages (for example, Message 1 and Message 2) are sent to Node B through its egress, and Node B also receives Message 1 and Message 2 sent by Node A during the even period T0. Node B forwards the above-mentioned message 1 and message 2 from its egress to node C within the odd period T1 based on the transmission method (eg, time synchronization mechanism) in the first local area network 801. Similarly, node C receives message 1 and message 2 forwarded by node B in the odd-numbered period T1, and forwards message 1 and message 2 to the WAN 803 connected to it in the next even-numbered period T0. Node D.

It should be noted that node D has the same structure as the head node device 620 of the second network in Figure 6, and the corresponding working principles are also the same, which will not be described again here.

When the service data is received by the node D in the wide area network 803, the node D of the wide area network 803 will allocate the message 1 received in the period T0 to the period T1, and forward the data to the node E, and then forward the data to the node E in the period T1. Message 2 received during the period is allocated to cycle T2, and the data is forwarded to node E.

By allocating different packets to different cycles for forwarding, data overlap between different packets can be avoided, the proportion of packet errors during packet transmission can be reduced, and the security of business data transmission can be improved.

Correspondingly, node E will receive message 1 in cycle T3 and message 2 in cycle T4 respectively; then node E will send message 1 to node F in cycle T5 and message 2 in cycle T6 respectively. Text 2 is given to node F. When node F receives message 1 in cycle T6 and receives message 2 in cycle T7, node F will send message 1 to node G in the second LAN 802 in cycle T7. In T8, the message 2 is sent to the node G in the second local area network 802, thereby completing the transmission of different messages in the second network.

During the transmission process of the above message, the sending node will generate a forwarding cycle tag value based on its sending cycle. The forwarding cycle tag value can represent the transmission cycle when the sending node sends different service data. For example, the forwarding cycle label values of node E are T5 and T6; the forwarding cycle label values of node F are T7 and T8.

When node G in the second LAN 802 receives message 1 and message 2 in the period T0, the message will be transmitted based on the same transmission method as that in the first LAN 801 (for example, time synchronization mechanism). transmission.

As shown in Figure 8, in the even period T0, node G forwards the above message 1 and message 2 from its egress to node H. Similarly, node H receives message 1 and message 2 forwarded by node G in the even-numbered period T0, and forwards message 1 and message 2 to node I in the next odd-numbered period T1; node I in the odd-numbered period In the period T1, the message 1 and the message 2 forwarded by the node H are received, and in the next even-numbered period T0, the message 1 and the message 2 are forwarded to realize the transmission of service data in the second LAN.

Through the transmission of the above business data in different types of networks, global planning of end-to-end deterministic transmission delay can be achieved, and the transmission bandwidth and transmission cycle of business data during the transmission process can be clarified, so that business data in the local area network can be In scenarios spanning wide area networks, the transmission delay of business data during forwarding is ensured to be controllable to reduce transmission jitter.

Figure 9 shows a schematic flow chart of forwarding service data between the first network and the second network provided by yet another embodiment of the present application. As shown in Figure 9, the connection relationship between the various devices in Figure 9 is the same as the connection relationship between the various devices in Figure 8, that is, the first LAN 801 includes node A, node B and node C; the second LAN 802 It includes node G, node H and node I; the wide area network 803 includes node D, node E and node F. Node C is the tail node device of the first LAN 801 , node D is the head node device of the WAN 803 , node F is the tail node device of the WAN 803 , and node G is the head node device of the second LAN 802 .

However, in Figure 9, when node D of the wide area network 803 forwards service data, it will receive two consecutive data packets (ie, the first packet received in the period T0 and the first packet received in the period T1). second message) are allocated to the same forwarding period (that is, period T2) for data forwarding, that is, device D needs to forward both the first message and the second message to node E in period T2.

Therefore, node D needs to determine the receiving cycle of node E (ie, cycle T4) based on its forwarding cycle (ie, cycle T2), and further determines that node E needs to forward the first message and the second message to the node in cycle T6. F; and node F needs to receive the first message and the second message in period T7, and forward the first message and second message to node G in the second LAN 802 in period T8.

Through the above determination of the receiving cycle and forwarding cycle of different nodes, the corresponding generation into periodic labels of different nodes. For example, the forwarding cycle label of node D is T2, the forwarding cycle label of node E is T6, the forwarding cycle label of node F is T8, etc. This enables the head node device of the wide area network 803 (ie, node D) to allocate the forwarding cycle labels corresponding to the above different nodes to each node, so as to reduce transmission jitter and transmission delay when transmitting service data between different nodes.

It should be noted that the above-mentioned method of transmitting service data by the wide area network 803 is only an example and can be adjusted according to the actual application scenario. Other unexplained methods of transmitting service data by the wide area network 803 are also within the protection scope of this application. Within, no further details will be given here.

The service data transmission device according to the embodiment of the present application will be introduced in detail below with reference to the accompanying drawings. Figure 10 shows a block diagram of a service data transmission device provided by an embodiment of the present application.

The service data transmission device 1000 is a device in the second network. As shown in Figure 10, the service data transmission device 1000 includes but is not limited to the following modules.

The edge period shaper 1001 is configured to adjust the second transmission parameter according to the first transmission parameter and the preset parameter mapping relationship to obtain the transmission parameter to be used. The first transmission parameter is a parameter sent by the first network, and the second transmission parameter is a parameter sent by the first network. The transmission parameters are transmission parameters of the equipment of the second network, and the first network and the second network are two communication networks with different transmission delays.

The transmission module 1002 is configured to respond to the service data sent by the device of the first network and transmit the service data in the second network according to the transmission parameters to be used.

In some embodiments, the preset parameter mapping relationship includes: period mapping relationship and bandwidth mapping relationship, the first transmission parameter includes the first transmission period and the first transmission bandwidth, the second transmission parameter includes the second transmission period and the second transmission bandwidth.

The service data transmission device 1000 also includes: a cycle mapping module configured to determine the cycle mapping relationship based on the first transmission cycle and the second transmission cycle; a bandwidth mapping module configured to determine the cycle mapping relationship based on the first transmission bandwidth and the second transmission bandwidth. Bandwidth mapping relationship.

In some embodiments, the edge period shaper 1001 is configured to determine the reserved time domain resources according to the period mapping relationship; adjust the second transmission period according to the reserved time domain resources and the first transmission period to obtain the transmission period to be used; And determine the reserved bandwidth resources according to the bandwidth mapping relationship; adjust the second transmission according to the reserved bandwidth resources and the first transmission bandwidth Bandwidth, obtain the transmission bandwidth to be used.

In some embodiments, the device of the second network includes a head node device. Adjusting the second transmission bandwidth according to the reserved bandwidth resources and the first transmission bandwidth to obtain the transmission bandwidth to be used includes: adjusting the second transmission bandwidth of the first node device according to the reserved bandwidth resources and the first transmission bandwidth to obtain the first node The transmission bandwidth to be used corresponding to the device.

Adjusting the second transmission cycle based on the reserved time domain resources and the first transmission cycle to obtain the transmission cycle to be used includes: determining the transmission cycle label of the head node device based on the reserved time domain resources and the first transmission cycle; Assume the label mapping relationship and the transmission cycle label of the first node device, and determine the transmission cycle labels of multiple second devices respectively. The preset label mapping relationship is used to represent the transmission cycle mapping relationship between the first node device and its connected second device; The transmission cycle mapping relationship between multiple second devices; the transmission cycle to be used is determined based on the forwarding cycle label of the first node device and the transmission cycle labels of the multiple second devices.

In some embodiments, the service data includes at least two service data messages; based on the reserved time domain resources and the first transmission cycle, determining the transmission cycle label of the head node device includes: determining that transmission is required within the first transmission cycle In the case of at least two service data messages, allocate corresponding forwarding and transmission periods to at least two service data messages according to the reserved time domain resources, and obtain the identifiers of at least two forwarding and transmission periods; and according to at least two Forward the identification of the transmission cycle and determine the transmission cycle label of the first node device.

In some embodiments, determining the transmission cycle label of the head node device based on the reserved time domain resources and the first transmission cycle includes: allocating at least two received service data packets based on the reserved time domain resources. One forwarding transmission cycle obtains the transmission cycle label of the head node device; at least two service data packets are packets received in at least two first transmission cycles.

In some implementations, a clock frequency synchronization mechanism is used for communication between multiple second devices, and between the first node device and the second device; the starting time and the ending time of the transmission cycle of the multiple second devices are not the same. The same, the switching frequency of the transmission cycles of multiple second devices is the same; each second device has multiple cache data queues, and the cache data queues are To store the received business data sent by the upper-level network device, each cache data queue corresponds to a transmission cycle, and the working status of the cache data queues is determined based on polling between multiple cache data queues.

In some embodiments, the transmission module 1002 is configured so that the first node device constructs a transmission message based on the service data and the transmission cycle tag of the second device; and sends the transmission message to the second device connected to the first node device, so that the second device is based on The transmission cycle tag in the transmission message determines the cache data queue identifier, and stores the business data in the cache data queue corresponding to the cache data queue identifier; when it is determined that the working status of the cache data queue corresponding to the cache data queue identifier is the sending state , forward the service data to other second devices.

In some embodiments, the devices of the first network include a tail node device and a plurality of first devices, the devices of the second network include a head node device and a plurality of second devices, and the tail node device is communicatively connected to the head node device; a plurality of The time synchronization mechanism is used for communication between the first devices and between the tail node device and the first node device.

In some embodiments, each first device has two cache data queues, the working states of the enqueue gates of the two cache data queues are mutually exclusive, and the working states of the dequeue gates of the two cache data queues are mutually exclusive, The working status of the enqueuing gate and the working status of the dequeuing gate of each cache data queue are mutually exclusive, and the working status includes an open state or a closed state.

In some embodiments, when it is determined that the status of the enqueue gate is open, the cache data queue is used to store business data; when it is determined that the status of the dequeue gate is open, the cache data queue is used Output business data; within the preset transmission cycle, the working status of the entry gate control and the working status of the exit gate control remain unchanged.

In some embodiments, the service data transmission device 1000 further includes: an acquisition module configured to obtain the transmission delay duration in the first network, where the transmission delay duration is based on the number of devices in the first network and the first transmission cycle. a determined duration; a determining module configured to determine that the transmission delay duration in the first network is not within the preset delay duration range, And when the service data sent by the device of the first network needs to be transmitted in the second network, it is determined that the second transmission parameter of the second network needs to be adjusted.

It should be noted that the service data transmission device 1000 in this embodiment can implement any of the service data transmission methods in the embodiments of this application that is applied to the device in the second network.

According to the service data transmission device of the embodiment of the present application, the edge period shaper adjusts the second transmission parameter according to the first transmission parameter and the preset parameter mapping relationship to obtain the transmission parameters to be used, so that the transmission parameters to be used can Match the first transmission parameters to improve the controllability of the transmission delay of data in the second network; thus, after receiving the service data sent by the device of the first network, the transmission module can be used to transmit the data in the second network according to the transmission parameters to be used. Transmit business data in the second network to achieve cross-domain data transmission with controllable transmission delay, meet industrial needs with high time accuracy, and promote the development of the industrial field.

Figure 11 shows a block diagram of a service data transmission device provided by yet another embodiment of the present application. The service data transmission device 1100 is a device in the first network. As shown in Figure 11, the service data transmission device 1100 includes but is not limited to the following modules.

The first sending module 1101 is configured to send the first transmission parameter to the device of the second network, so that the device of the second network can adjust the second transmission parameter according to the first transmission parameter and the preset parameter mapping relationship to obtain the desired Use transfer parameters.

The second sending module 1102 is configured to send service data to the device of the second network, so that the device of the second network transmits the service data in the second network according to the transmission parameters to be used.

According to the service data transmission device according to the embodiment of the present application, the first transmission parameter is sent to the device of the second network through the first sending module, so that the device of the second network can transmit the first transmission parameter to the device of the second network according to the first transmission parameter and the preset parameter mapping relationship. The second transmission parameters are adjusted to obtain the transmission parameters to be used, which can match the transmission parameters to be used with the first transmission parameters and improve the controllability of the transmission delay of data in the second network; the second sending module sends the data to the second transmission parameter. The equipment of the network sends the service data, so that the equipment of the second network transmits the service data in the second network according to the transmission parameters to be used, realizing cross-domain data transmission with controllable transmission delay, Meet the industrial needs of high time accuracy and promote the development of the industrial field.

It should be understood that the present application is not limited to the specific configurations and processes described in the embodiments above and illustrated in the figures. For the convenience and simplicity of description, detailed descriptions of known methods are omitted here, and for the specific working processes of the systems, modules and units described above, reference can be made to the corresponding processes in the foregoing method embodiments, which will not be described again here.

As shown in FIG. 12 , computing device 1200 includes an input device 1201 , an input interface 1202 , a central processing unit 1203 , a memory 1204 , an output interface 1205 , and an output device 1206 . Among them, the input interface 1202, the central processing unit 1203, the memory 1204, and the output interface 1205 are connected to each other through the bus 1207. The input device 1201 and the output device 1206 are connected to the bus 1207 through the input interface 1202 and the output interface 1205 respectively, and then to the computing device 1200 to connect other components.

In one embodiment, the input device 1201 receives input information from the outside and transmits the input information to the central processor 1203 through the input interface 1202; the central processor 1203 processes the input information based on computer-executable instructions stored in the memory 1204. To generate output information, store the output information temporarily or permanently in the memory 1204, and then transmit the output information to the output device 1206 through the output interface 1205; the output device 1206 outputs the output information to the outside of the computing device 1200 for use by the user.

In one embodiment, the computing device shown in FIG. 12 may be implemented as an electronic device, and the electronic device may include: a memory configured to store a computer program; and a processor configured to run the computer program stored in the memory. , to perform the service data transmission method described in the above embodiment.

In one embodiment, the computing device shown in Figure 12 may be implemented as a business data transmission system. The business data transmission system may include: a memory configured to store a computer program; a processor configured to run The computer program stored in the memory is used to execute the business data transmission method described in the above embodiment.

The above descriptions are only exemplary embodiments of the present application and are not used to limit the protection scope of the present application. Generally speaking, the various embodiments of the present application may be implemented in hardware or special purpose circuitry, software, logic, or any combination thereof. For example, some aspects can be implemented in hardware, while other aspects may be implemented in firmware or software that may be executed by a controller, microprocessor, or other computing device, although the application is not limited thereto.

Embodiments of the present application may be implemented by a data processor of the mobile device executing computer program instructions, for example in a processor entity, or by hardware, or by a combination of software and hardware. Computer program instructions may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source code written in any combination of one or more programming languages or target code.

Any block diagram of a logic flow in the figures of this application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions. Computer programs can be stored on memory. The memory may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as, but not limited to, read only memory (ROM), random access memory (RAM), optical storage devices and systems (digital versatile disc DVD or CD), etc. Computer-readable media may include non-transitory storage media. The data processor may be of any type suitable for the local technical environment, such as, but not limited to, general purpose computers, special purpose computers, microprocessors, digital signal processors (DSP), application specific integrated circuits (ASIC), programmable logic devices (FGPA) and processors based on multi-core processor architecture.

A detailed description of exemplary embodiments of the present application has been provided above, by way of illustrative and non-limiting examples. However, considering the accompanying drawings and claims, various modifications and adjustments to the above embodiments will be apparent to those skilled in the art without departing from the scope of the present application. Accordingly, the proper scope of the application will be determined from the claims.

Claims

A method of transmitting service data, applied to the equipment of the second network, including:

Adjust the second transmission parameter according to the first transmission parameter and the preset parameter mapping relationship to obtain the transmission parameter to be used, wherein the first transmission parameter is a parameter sent by the device of the first network, and the second transmission parameter is the transmission parameter of the device of the second network, and the first network and the second network are two communication networks with different transmission delays; and

In response to the service data sent by the device of the first network, the service data is transmitted in the second network according to the transmission parameter to be used.
The method according to claim 1, wherein the preset parameter mapping relationship includes: a period mapping relationship and/or a bandwidth mapping relationship, and the first transmission parameter includes a first transmission period and/or a first transmission bandwidth, The second transmission parameters include a second transmission period and/or a second transmission bandwidth;

The method further includes: adjusting the second transmission parameter according to the first transmission parameter and the preset parameter mapping relationship, and before obtaining the transmission parameter to be used, according to the first transmission period and the second transmission period, Determine the period mapping relationship; and/or determine the bandwidth mapping relationship based on the first transmission bandwidth and the second transmission bandwidth.
The method according to claim 2, wherein adjusting the second transmission parameter according to the first transmission parameter and a preset parameter mapping relationship to obtain the transmission parameter to be used includes:

Determine the reserved time domain resources according to the period mapping relationship, adjust the second transmission period according to the reserved time domain resources and the first transmission period, and obtain the transmission period to be used; and/or,

Determine reserved bandwidth resources according to the bandwidth mapping relationship, adjust the second transmission bandwidth according to the reserved bandwidth resources and the first transmission bandwidth, and obtain the transmission bandwidth to be used.
The method according to claim 3, wherein the device of the second network includes a head node device;

The adjusting the second transmission bandwidth according to the reserved bandwidth resources and the first transmission bandwidth to obtain the transmission bandwidth to be used includes:

According to the reserved bandwidth resources and the first transmission bandwidth, the second transmission bandwidth of the first node device is adjusted to obtain the transmission bandwidth corresponding to the first node device to be used.
The method according to claim 3, wherein the device of the second network includes a head node device and a plurality of second devices;

The adjusting the second transmission period according to the reserved time domain resources and the first transmission period to obtain the transmission period to be used includes:

Determine the transmission cycle label of the head node device according to the reserved time domain resources and the first transmission cycle;

According to the preset label mapping relationship and the transmission cycle label of the first node device, a plurality of transmission cycle labels of the second device are respectively determined, wherein the preset label mapping relationship is used to characterize the connection between the first node device and the first node device. The transmission cycle mapping relationship between the second devices and the transmission cycle mapping relationship between a plurality of second devices; and

The transmission period to be used is determined based on the forwarding cycle label of the head node device and the transmission cycle labels of multiple second devices.
The method according to claim 5, wherein the service data includes at least two service data messages;

Determining the transmission cycle label of the head node device based on the reserved time domain resources and the first transmission cycle includes:

When it is determined that at least two service data messages need to be transmitted within the first transmission period, corresponding forwarding and transmission periods are allocated to the at least two service data messages according to the reserved time domain resources, Obtain the identity of at least two forwarding transmission cycles;

The transmission cycle label of the head node device is determined based on the identifiers of the at least two forwarding transmission cycles.
The method according to claim 5, wherein determining the transmission cycle label of the head node device based on the reserved time domain resources and the first transmission cycle includes:

According to the reserved time domain resources, allocate a forwarding transmission cycle to the at least two received service data messages, and obtain the transmission cycle label of the head node device;

Wherein, the at least two service data messages are messages received sequentially within at least two of the first transmission cycles.
The method according to claim 5, wherein a clock frequency synchronization mechanism is used for communication between a plurality of second devices and between the first node device and the second device;

Wherein, the starting time and ending time of the transmission cycles of the plurality of second devices are different, and the switching frequency of the transmission cycles of the plurality of second devices is the same;

Each of the second devices has multiple cache data queues. The cache data queues are used to store received service data sent by the upper-level network device. Each of the cache data queues corresponds to a transmission cycle. Multiple caches The working status of the cached data queue is determined based on polling among the data queues.
The method according to claim 8, wherein the working status of the cached data queue includes: sending status or receiving status;

Within a preset period, only one of the plurality of cached data queues of each second device has a working status of the sending state, and the working status of the other cached data queues is the sending status. Describe the receiving status.
The method according to claim 8 or 9, wherein in response to the service data sent by the device of the first network, transmitting the service data in the second network according to the transmission parameters to be used includes: :

The first node device constructs a transmission message based on the service data and the transmission cycle tag of the second device;

Send the transmission message to a second device connected to the head node device, so that The second device determines the cache data queue identifier based on the transmission cycle tag in the transmission message, and stores the service data in the cache data queue corresponding to the cache data queue identifier; and

When it is determined that the working state of the cached data queue corresponding to the cached data queue identifier is the sending state, the service data is forwarded to another second device.
The method according to claim 1, wherein the devices of the first network include a tail node device and a plurality of first devices, the devices of the second network include a head node device and a plurality of second devices, and the tail node device includes a head node device and a plurality of second devices. The node device is communicatively connected to the first node device;

Wherein, a time synchronization mechanism is used for communication between multiple first devices and between the tail node device and the first node device.
The method according to claim 11, wherein each first device has two cache data queues, the working states of the enqueue gate control of the two cache data queues are mutually exclusive, and the two cache data queues The working status of the dequeuing gate is mutually exclusive. The working status of the enqueuing gate and the working status of the dequeuing gate of each cache data queue are mutually exclusive. The working status includes an open state or a closed state.
The method according to claim 12, wherein, when it is determined that the state of the queue entry gate is the open state, the cache data queue is used to store the service data;

When it is determined that the status of the dequeue gate control is the open status, the cache data queue is used to output the service data;

Within the preset transmission period, the working status of the queue entry gate control and the working status of the queue exit gate control remain unchanged.
The method according to claim 2, wherein adjusting the second transmission parameter according to the first transmission parameter and a preset parameter mapping relationship, and before obtaining the transmission parameter to be used, further includes:

Obtain the transmission delay duration in the first network, where the transmission delay duration The length is a length determined based on the number of devices in the first network and the first transmission cycle;

When it is determined that the transmission delay duration in the first network is not within the preset delay duration range, and the service data sent by the device of the first network needs to be transmitted in the second network, it is determined that the The second transmission parameter of the second network is adjusted.
A method of transmitting business data, applied to the equipment of the first network, including:

Send the first transmission parameter to the device of the second network, so that the device of the second network can adjust the second transmission parameter according to the first transmission parameter and the preset parameter mapping relationship to obtain the transmission parameter to be used, wherein , the first network and the second network are two communication networks with different transmission delays, and the second transmission parameter is a transmission parameter of a device of the second network; and

Send service data to the device of the second network, so that the device of the second network transmits the service data in the second network according to the transmission parameters to be used.
A service data transmission device, which is a device in a second network, including:

an edge period shaper configured to adjust the second transmission parameter according to the first transmission parameter and a preset parameter mapping relationship to obtain the transmission parameter to be used, where the first transmission parameter is a parameter sent by the first network, The second transmission parameter is a transmission parameter of a device of the second network, and the first network and the second network are two communication networks with different transmission delays; and

The transmission module is configured to respond to the service data sent by the device of the first network and transmit the service data in the second network according to the transmission parameter to be used.
A service data transmission device, which is a device in a first network, including:

The first sending module is configured to send the first transmission parameter to the device of the second network, so that the device of the second network can map according to the first transmission parameter and the preset parameter. The second transmission parameter is adjusted to obtain the transmission parameter to be used, wherein the first network and the second network are two communication networks with different transmission delays, and the second transmission parameter is the second transmission parameter. Transmission parameters of the network’s devices; and

The second sending module is configured to send service data to the device of the second network, so that the device of the second network transmits the service data in the second network according to the transmission parameter to be used.
An electronic device including:

one or more processors;

A memory having one or more computer programs stored thereon, said one or more computer programs being executed by said one or more processors, such that said one or more processors implement any of claims 1-14 One item, or the service data transmission method as claimed in claim 15.
A computer-readable storage medium, the computer-readable storage medium stores a computer program, the computer program is executed by a processor to implement any one of claims 1-14, or the business as claimed in claim 15 Data transmission method.