CN117749691A - Data transmission method, system and electronic equipment - Google Patents

Abstract

The invention discloses a data transmission method, a data transmission system and electronic equipment. Wherein the method comprises the following steps: acquiring a subscription relation in a preset network; determining subscribed predetermined data based on a subscription relationship, determining a transmitting domain controller for transmitting the predetermined data from a plurality of domain controllers, and determining a receiving domain access device for receiving the predetermined data from a plurality of access devices; determining a transmission domain switching device through which predetermined data is required to be transmitted from a plurality of switching devices; determining a subdomain corresponding to the transmitting domain controller, a subdomain corresponding to the receiving domain access equipment and a subdomain corresponding to the transmission domain exchange equipment; determining a transmission line of predetermined data according to a subdomain corresponding to the transmitting domain controller, a subdomain corresponding to the receiving domain access device and a subdomain corresponding to the transmission domain switching device; predetermined data and transmission lines are sent to a transmission domain controller. The invention solves the technical problem of low data transmission efficiency in the related art during data transmission.

Description

Data transmission method, system and electronic equipment

Technical Field

The present invention relates to the field of data processing, and in particular, to a data transmission method, system and electronic device.

Background

With the popularization of software-defined network technology and the deep research of TSN protocol, the application of TSN controllers based on SDN in vehicle-mounted, military, industrial Internet and other scenes becomes a research hot spot. The TSN controller performs centralized control on the data plane equipment through a southbound protocol, so that forwarding management of a data layer can be simplified, and the network resource utilization rate can be improved. However, when the network size increases, there is a technical problem that the efficiency of transmitting data is low when data is transmitted in the related art.

In view of the above problems, no effective solution has been proposed at present.

Disclosure of Invention

The embodiment of the invention provides a data transmission method, a data transmission system and electronic equipment, which are used for at least solving the technical problem of low data transmission efficiency in the related art.

According to an aspect of an embodiment of the present invention, there is provided a data transmission method including: obtaining a subscription relation in a preset network, wherein the preset network is divided into a plurality of subdomains, the subdomains respectively comprise a corresponding domain controller, access equipment and switching equipment, and the subscription relation represents a relation for carrying out data subscription between the access equipment and the domain controller; determining subscribed predetermined data based on the subscription relation, determining a transmitting domain controller for transmitting the predetermined data from a plurality of domain controllers, and determining a receiving domain access device for receiving the predetermined data from a plurality of access devices; determining a transmission domain switching device through which the predetermined data is required to be transmitted in the process that the predetermined data is transmitted to the receiving domain access device by the transmitting domain controller from a plurality of switching devices; determining a subdomain corresponding to the transmitting domain controller, a subdomain corresponding to the receiving domain access device and a subdomain corresponding to the transmission domain switching device; determining a transmission line of the predetermined data according to a subdomain corresponding to the transmitting domain controller, a subdomain corresponding to the receiving domain access device and a subdomain corresponding to the transmission domain switching device; and transmitting the predetermined data and the transmission line to the transmission domain controller.

Optionally, the determining the transmission line of the predetermined data according to the sub-domain corresponding to the transmitting domain controller, the sub-domain corresponding to the receiving domain access device, and the sub-domain corresponding to the transmission domain switching device includes: determining a domain transmission line corresponding to the predetermined data in a first domain when the domain corresponding to the transmitting domain controller, the domain corresponding to the receiving domain access device, and the domain corresponding to the transmission domain switching device are the same domain and the transmission line includes a domain transmission line; and/or determining inter-domain transmission lines of the predetermined data among a plurality of second sub-domains and intra-domain transmission lines respectively corresponding to the plurality of second sub-domains when the sub-domain corresponding to the transmitting domain controller, the sub-domain corresponding to the receiving domain access device, and the sub-domain corresponding to the transmission domain switching device are not the same sub-domain, and the transmission lines include inter-domain transmission lines and intra-domain transmission lines.

Optionally, the determining the transmission line of the predetermined data according to the sub-domain corresponding to the transmitting domain controller, the sub-domain corresponding to the receiving domain access device, and the sub-domain corresponding to the transmission domain switching device includes: under the condition that the number of the transmission domain switching devices is multiple and the domains corresponding to the multiple transmission domain switching devices are not the same subdomain, determining a target transmission domain required to pass through for transmitting the preset data according to the multiple transmission domain switching devices; dividing the preset data to obtain sub-data respectively corresponding to the target transmission domains; and determining transmission lines corresponding to the plurality of sub-data respectively according to the sub-domain corresponding to the transmitting domain controller, the sub-domain corresponding to the receiving domain access device and the sub-domains corresponding to the plurality of transmission domain switching devices respectively.

Optionally, the acquiring the subscription relationship in the predetermined network includes: receiving address information and subscription information corresponding to the subdomains; and determining the subscription relation based on the address information corresponding to the multiple subdomains and the subscription information.

Optionally, under the condition that a subdomain of subscription information change exists in the subdomains, receiving subscription change information sent by a third subdomain to update the subscription relationship, wherein the third subdomain is a subdomain of subscription information change in the subdomains.

Optionally, in the case that a sub-domain in which the intra-domain device is changed exists in the plurality of sub-domains, device change information sent by a fourth sub-domain is received, where the fourth sub-domain is a sub-domain in which the intra-domain device is changed in the plurality of sub-domains.

Optionally, the predetermined network is a time sensitive network TSN network.

Optionally, the determining subscribed predetermined data based on the subscription relationship, determining a sending domain controller for sending the predetermined data from a plurality of domain controllers, and determining a receiving domain access device for receiving the predetermined data from a plurality of access devices, includes: in the case that the subscription relationship includes a relationship described in the form of a reference number, determining the predetermined data, a transmission reference number corresponding to the predetermined data, and a reception reference number corresponding to the predetermined data; and determining the transmitting domain controller from the plurality of domain controllers according to the transmitting label, and determining the receiving domain access device from the plurality of access devices according to the receiving label.

According to an aspect of an embodiment of the present invention, there is provided a data transmission system based on a predetermined network, the data transmission system including: the system comprises a main controller, a plurality of domain controllers, a plurality of access devices and a plurality of switching devices, wherein the predetermined network is divided into a plurality of subdomains, the subdomains respectively comprise a corresponding domain controller, an access device and a switching device, the main controller is used for acquiring a subscription relationship in the predetermined network, and the subscription relationship represents a relationship for carrying out data subscription between the access device and the domain controller; determining subscribed predetermined data based on the subscription relation, determining a transmitting domain controller for transmitting the predetermined data from the plurality of domain controllers, and determining a receiving domain access device for receiving the predetermined data from the plurality of access devices; determining a transmission domain switching device through which the predetermined data is required to be transmitted in the process that the predetermined data is transmitted to the receiving domain access device by the transmitting domain controller from a plurality of switching devices; determining a subdomain corresponding to the transmitting domain controller, a subdomain corresponding to the receiving domain access device and a subdomain corresponding to the transmission domain switching device; determining a transmission line of the predetermined data according to a subdomain corresponding to the transmitting domain controller, a subdomain corresponding to the receiving domain access device and a subdomain corresponding to the transmission domain switching device; and transmitting the predetermined data and the transmission line to the transmission domain controller.

According to an aspect of an embodiment of the present invention, there is provided an electronic apparatus including: a processor; a memory for storing the processor-executable instructions; wherein the processor is configured to execute the instructions to implement the data transmission method of any of the above.

According to an aspect of an embodiment of the present invention, there is provided a computer-readable storage medium, which when executed by a processor of an electronic device, causes the electronic device to perform any one of the data transmission methods described above.

The embodiment of the invention relies on a predetermined network, wherein the predetermined network is divided into a plurality of subdomains, and the subdomains respectively comprise a corresponding domain controller, an access device and a switching device. In the predetermined network, a subscription relationship in the predetermined network is acquired. Since the subscription relationship indicates a relationship between the access device and the domain controller for performing data subscription, predetermined data to be subscribed can be determined based on the subscription relationship, a transmitting domain controller for transmitting the predetermined data is determined from among the plurality of domain controllers, and a receiving domain access device for receiving the predetermined data is determined from among the plurality of access devices. After the determination, a transmission domain switching device through which the predetermined data is required to be transmitted in the process that the predetermined data is transmitted from the transmission domain controller to the receiving domain access device can be determined from the plurality of switching devices. And determining a subdomain corresponding to the transmitting domain controller, a subdomain corresponding to the receiving domain access equipment and a subdomain corresponding to the transmission domain exchange equipment. Determining a transmission line of the predetermined data according to the subdomain corresponding to the transmitting domain controller, the subdomain corresponding to the receiving domain access device and the subdomain corresponding to the transmission domain switching device, so as to achieve the purpose of determining the transmission line of the predetermined data, and transmitting the predetermined data and the transmission line to the transmitting domain controller, so that the predetermined data is transmitted according to the transmission line. The main controller is used for planning the route, so that the process of planning the route is quickened, and the determined transmission line is globally planned, so that the transmission efficiency of the preset data can be quickened during transmission, and the technical problem of low data transmission efficiency during data transmission in the related technology is solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

fig. 1 is a flowchart of a data transmission method according to an embodiment of the present invention;

fig. 2 is a block diagram of an application architecture of a TSN controller system provided by an alternative embodiment of the present invention;

fig. 3 is a hierarchical domain network architecture diagram of a TSN controller system provided by an alternative embodiment of the present invention;

FIG. 4 is a diagram of an east-west protocol of a publish-subscribe provided by an alternative embodiment of the present invention;

FIG. 5 is a schematic diagram of a proxy service middleware architecture provided by an alternative embodiment of the present invention;

fig. 6 is a block diagram of a data transmission apparatus according to an embodiment of the present invention.

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

First, the terms of art referred to in this application are described:

software defined network SDN (Software Defined Network): the method is a technology for software network control functions, the purpose of SDN is to realize separation of the network control functions and forwarding functions so as to realize centralization of the control functions, and a TSN controller based on the SDN is main equipment for realizing the SDN technology. The TSN controller provides rich REST APIs in the north direction, provides an API interface with fine granularity of network and flow characteristics, realizes differentiated docking of heterogeneous equipment by adopting a standard NETCONF interface in the south direction, realizes conversion from a TSN network service plane configuration model to a forwarding plane configuration model, and shields a specific configuration mode for a user.

Time sensitive network TSN (Time-Sensitive Networking): is a network technology for real-time communication aimed at providing reliable, low-delay and high-bandwidth communication.

REST API (Representational State Transfer Application Programming Interface): is an application program interface designed based on REST architecture style and is used for providing services and resources on the internet. It uses the HTTP protocol for communication, enabling interaction between the client and the server through manipulation of resources (GET, POST, PUT, DELETE, etc.). REST APIs typically return data in JSON or XML format, and are widely used in web development and mobile application development.

SNMP (Simple Network Management Protocol): is a protocol for monitoring and managing network devices. It allows a network administrator to remotely monitor the status, performance, and other critical parameters of network devices and to configure and control these devices.

NETCONF (Network Configuration Protocol): is a protocol for configuring a network device. It provides a standardized way to access and configure configuration information for network devices, including routers, switches, and firewalls. Netcon uses XML format to represent configuration data and can communicate over a secure transmission channel.

OT network device: refers to network equipment for an industrial internet of things system. OT refers to operational technology (Operational Technology) that relates to industrial control systems, sensors, actuators, and other technologies for monitoring and controlling industrial equipment. The OT network equipment comprises an industrial grade switch, a router, a firewall, an industrial Internet of things gateway and the like, and is used for connecting and managing industrial equipment and sensors, and realizing the functions of data acquisition, remote monitoring, control and the like.

API interface (Application Programming Interface): is a defined set of rules and conventions for interaction and communication between different software systems. The API interface may allow sharing of data and functionality between different software systems, thereby enabling more efficient information exchange and interoperability. Through the API interface, developers can access and utilize the functions of other software systems without having to know the internal implementation details thereof. API interfaces are commonly used to build Web services, application integration, and data exchange scenarios.

Example 1

According to an embodiment of the present invention, there is provided an embodiment of a data transmission method, it should be noted that the steps shown in the flowchart of the drawings may be performed in a computer system such as a set of computer executable instructions, and that, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in an order different from that herein.

Fig. 1 is a flowchart of a data transmission method according to an embodiment of the present invention, as shown in fig. 1, the method includes the steps of:

step S102, obtaining a subscription relation in a predetermined network, wherein the predetermined network is divided into a plurality of subdomains, the subdomains respectively comprise a corresponding domain controller, access equipment and switching equipment, and the subscription relation represents the relation of data subscription between the access equipment and the domain controller;

in the providing step S102, a predetermined network is defined, and the predetermined network may be a network with high time requirements or a network in which a three-layer protocol cannot be used and a subscription relationship is used. The subscription relationship in the predetermined network refers to a communication relationship established between the predetermined network domain controller and the access device. In a predetermined network, the domain controller may send a subscription request to the access device and receive a subscription response from the access device. Through the subscription relationship, the domain controller can control the communication between the access devices and ensure the reliability and accuracy of the real-time communication.

In this application, a predetermined network is divided into a plurality of subfields, with each subfield separately administering devices included therein. By dividing the network into multiple subzones, congestion and collisions in the network may be reduced, thereby improving overall network performance and throughput. Each subdomain can be independently managed and optimized, and the whole network is prevented from being influenced by single node or link faults. Moreover, by dividing the network into a plurality of subfields, communication between different subfields can be restricted, thereby enhancing security of the network. Each subdomain may have its own security policies and access control rules to ensure that data and information in the network flows only between authorized subdomains. Furthermore, dividing the network into a plurality of subfields can disperse network management tasks to each subfield manager, thereby reducing the management burden of the whole network. Each subdomain can have own configuration and management strategy, so that network administrators can conveniently conduct network monitoring, fault removal and performance optimization. Further, by dividing the network into multiple subzones, network resources may be more flexibly configured and deployed. Each subdomain can be customized according to its own needs and topology, providing a network environment more suitable for specific applications and services.

It should be noted that, since the predetermined network is divided into a plurality of subfields, the plurality of subfields can respectively manage the respective interiors, that is, can perform intra-domain management. At this time, a master controller is further disposed in the predetermined network, and the master controller may administer the plurality of subfields, that is, may perform inter-domain management. Through intra-domain management and inter-domain management, the high efficiency of processing data by a predetermined network can be ensured.

Alternatively, the predetermined network may be a Time sensitive network TSN network, as TSN (Time-Sensitive Networking) network is a network technology for real-Time communication, intended to provide reliable, low-latency and high-bandwidth communication. Thus, by using the method provided by the application, the strict requirements of the TSN network on real-time communication can be met.

Step S104, based on the subscription relation, determining subscribed predetermined data, determining a transmitting domain controller for transmitting the predetermined data from a plurality of domain controllers, and determining a receiving domain access device for receiving the predetermined data from a plurality of access devices;

in the providing step S104 of the present application, since the subscription relationship is known, it is also known what access device subscribes what information to what domain controller. Thus, it is possible to determine predetermined data to be subscribed to, determine a transmitting domain controller for transmitting the predetermined data from among a plurality of domain controllers, and determine a receiving domain access device for receiving the predetermined data from among a plurality of access devices. By determining the above data, preparation can be made for subsequent determination of the transmission path of the predetermined data.

Step S106, determining the transmission domain switching equipment through which the predetermined data is required to be transmitted in the process that the predetermined data is transmitted to the receiving domain access equipment by the transmitting domain controller from a plurality of switching equipment;

in the step S106, a transmission domain switching device through which predetermined data is required to be transmitted is determined from the plurality of switching devices in the process that the predetermined data is transmitted from the transmission domain controller to the reception domain access device. The transport domain switching device may be one or more. The transmission domain switching device may be a switching device included in a domain where the transmission domain controller is located, or may be a switching device included in a domain where the receiving domain access device is located, or may be a switching device included in a domain where transmission is passed. By determining the transport domain switching device, the path the predetermined data is to traverse can be determined.

Step S108, determining a subdomain corresponding to the transmitting domain controller, a subdomain corresponding to the receiving domain access equipment and a subdomain corresponding to the transmission domain exchange equipment;

in the present application, in a providing step S108, a sub-domain corresponding to the transmitting domain controller, a sub-domain corresponding to the receiving domain access device, and a sub-domain corresponding to the transmitting domain switching device are determined, so as to determine a domain through which a predetermined device passes.

Step S110, determining a transmission line of predetermined data according to a subdomain corresponding to the transmitting domain controller, a subdomain corresponding to the receiving domain access device and a subdomain corresponding to the transmission domain switching device;

in the providing step S110, a transmission line of predetermined data is determined according to a sub-domain corresponding to the transmitting domain controller, a sub-domain corresponding to the receiving domain access device, and a sub-domain corresponding to the transmission domain switching device. Because the transmission line is determined by the subdomain, the predetermined data can be determined to be transmitted in one domain and then transmitted in another domain, and the transmission between the domains can be more efficient by determining the domains which pass through successively.

Moreover, after the predetermined data is transmitted to the domain, the domain can automatically plan the transmission path in the domain according to the network resources configured and deployed in the domain, so that the domain transmission is more efficient.

Since transmission of predetermined data is more efficient between domains and more efficient within domains when the predetermined data is transmitted according to the predetermined line, the predetermined data transmission line is a more efficient line.

Step S112, transmitting the predetermined data and the transmission line to the transmitting domain controller.

In the step S112, the predetermined data and the transmission line are sent to the domain controller, so that the domain controller transmits the predetermined data to the next device according to the line recorded in the transmission line, thereby achieving the effect of accurately transmitting the predetermined data.

The steps S102-S112 rely on a predetermined network, where the predetermined network is divided into a plurality of sub-domains, and the plurality of sub-domains respectively include a corresponding domain controller, an access device, and a switching device. In the predetermined network, a subscription relationship in the predetermined network is acquired. Since the subscription relationship indicates a relationship between the access device and the domain controller for performing data subscription, predetermined data to be subscribed can be determined based on the subscription relationship, a transmitting domain controller for transmitting the predetermined data is determined from among the plurality of domain controllers, and a receiving domain access device for receiving the predetermined data is determined from among the plurality of access devices. After the determination, a transmission domain switching device through which the predetermined data is required to be transmitted in the process that the predetermined data is transmitted from the transmission domain controller to the receiving domain access device can be determined from the plurality of switching devices. And determining a subdomain corresponding to the transmitting domain controller, a subdomain corresponding to the receiving domain access equipment and a subdomain corresponding to the transmission domain exchange equipment. Determining a transmission line of the predetermined data according to the subdomain corresponding to the transmitting domain controller, the subdomain corresponding to the receiving domain access device and the subdomain corresponding to the transmission domain switching device, so as to achieve the purpose of determining the transmission line of the predetermined data, and transmitting the predetermined data and the transmission line to the transmitting domain controller, so that the predetermined data is transmitted according to the transmission line. The main controller is used for planning the route, so that the process of planning the route is quickened, and the determined transmission line is globally planned, so that the transmission efficiency of the preset data can be quickened during transmission, and the technical problem of low data transmission efficiency during data transmission in the related technology is solved.

As an alternative embodiment, determining a transmission line of predetermined data according to a subfield corresponding to a transmitting domain controller, a subfield corresponding to a receiving domain access device, and a subfield corresponding to a transmission domain switching device, includes: under the condition that a plurality of transmission domain switching devices are provided and the domains corresponding to the plurality of transmission domain switching devices are not the same subdomain, determining a target transmission domain through which predetermined data need to be transmitted according to the plurality of transmission domain switching devices; dividing preset data to obtain sub-data corresponding to the target transmission domain respectively; and determining transmission lines respectively corresponding to the plurality of sub-data according to the sub-domain corresponding to the transmitting domain controller, the sub-domain corresponding to the receiving domain controller and the sub-domains respectively corresponding to the plurality of transmission domain switching devices.

In this embodiment, a case is described in which there are a plurality of transmission domain switching devices, and the domains to which the plurality of transmission domain switching devices respectively correspond are not the same sub-domain. In this case, it is explained that the predetermined device passes through a plurality of domains other than the domain in which the transmission domain controller is located and the reception domain access device is located in the transmission process, that is, passes through a plurality of domains for transmission. In this case, the predetermined data may be divided into a plurality of data, that is, a plurality of domains for transmission are each made to transmit a different portion of the predetermined data. If the domains corresponding to the multiple transmission domain switching devices are not the same subdomain, and are three domains, the predetermined data can be divided into three sub-data of ABC, and the transmission lines corresponding to the three sub-data of ABC are determined. The transmission line corresponding to the sub-A data is the domain where the domain controller is located, the domain where the switching device for processing the sub-A data is located, and the domain where the receiving domain access device is located. The transmission line corresponding to the sub-data B is the domain where the controller of the transmitting domain is located, the domain where the switching device for processing the sub-data B is located, and the domain where the access device of the receiving domain is located. The transmission line corresponding to the sub-data C is the domain where the domain controller is located, the domain where the switching device for processing the sub-data C is located, and the domain where the receiving domain access device is located. By dividing the predetermined data into three sub-data, the three sub-data can be synchronously transmitted, thereby achieving the effect of improving the data transmission efficiency.

As an alternative embodiment, determining a transmission line of predetermined data according to a subfield corresponding to a transmitting domain controller, a subfield corresponding to a receiving domain access device, and a subfield corresponding to a transmission domain switching device, includes: determining a domain transmission line of predetermined data corresponding to the first domain in the case that the domain corresponding to the transmitting domain controller, the domain corresponding to the receiving domain access device, and the domain corresponding to the transmission domain switching device are the same domain, and the transmission line includes a domain transmission line; and/or determining inter-domain transmission lines of the predetermined data among the plurality of second sub-domains and intra-domain transmission lines respectively corresponding to the plurality of second sub-domains in the case that the sub-domain corresponding to the transmitting domain controller, the sub-domain corresponding to the receiving domain access device, and the sub-domain corresponding to the transmitting domain switching device are not the same sub-domain and the transmission lines include the inter-domain transmission lines and the intra-domain transmission lines.

In this embodiment, in the case where the sub-domain corresponding to the transmitting domain controller, the sub-domain corresponding to the receiving domain access device, and the sub-domain corresponding to the transmitting domain switching device are the same sub-domain, it is explained that the predetermined data is transmitted in one sub-domain, and only the intra-domain transmission line corresponding to the predetermined data in the first sub-domain may be determined. When the predetermined data is transmitted in the domain, the path may be calculated only by the domain controller in the domain.

In the case where the sub-domain corresponding to the transmitting domain controller, the sub-domain corresponding to the receiving domain access device, and the sub-domain corresponding to the transmitting domain switching device are not the same sub-domain, it is explained that predetermined data is transmitted both in the domain and between the domains, in which case inter-domain transmission lines of the predetermined data between a plurality of second sub-domains and intra-domain transmission lines corresponding to the plurality of second sub-domains, respectively, may be determined. So that in different cases it is determined that different corresponding transmission lines are to be processed.

As an alternative embodiment, obtaining the subscription relationship in the predetermined network includes: receiving address information and subscription information corresponding to a plurality of subdomains; and determining a subscription relation based on the address information and the subscription information corresponding to the multiple subdomains.

In this embodiment, the step of determining a subscription relationship is described. Since the main controller determines the subscription relationship when determining the predetermined data in the present application, it is necessary to acquire the subscription relationship in the predetermined network in advance. The process of obtaining the subscription relationship may be to receive address information and subscription information corresponding to the plurality of subzones, and then determine based on the address information and subscription information corresponding to the plurality of subzones. By receiving address information and subscription information corresponding to the multiple subdomains, subscription states among multiple devices of the multiple subdomains can be known, and therefore subscription relations can be accurately determined.

As an optional embodiment, in a case that a subdomain in which the subscription information changes exists in the multiple subdomains, the subscription change information sent by the third subdomain is received, so as to update the subscription relationship, where the third subdomain is a subdomain in which the subscription information changes in the multiple subdomains.

In this embodiment, under the condition that a subdomain in which subscription information changes exists in a plurality of subdomains, the subdomain receives subdomain information in which the subscription information changes, and sends subscription change information, and through the subscription change information, the subscription relation can be updated in time, so that the phenomenon that the subdomain controller receives information which is not subscribed by itself and the controller sends information which is not subscribed by others to others, and the phenomenon of information confusion caused by the controller is avoided.

As an alternative embodiment, in a case that a sub-domain in which a device in the domain changes exists in the plurality of sub-domains, device change information sent by a fourth sub-domain is received, where the fourth sub-domain is a sub-domain in which a device in the domain changes in the plurality of sub-domains.

In this embodiment, when a sub-domain in which a device in a domain is changed exists among a plurality of sub-domains, device change information transmitted from the sub-domain in which the device in the domain is changed is received, so that it is possible to change the recorded device in the predetermined network in time, and to avoid the situation that the lost device is still recorded or the existing device is not recorded, and to avoid adverse effects on data transmission.

As an alternative embodiment, determining subscribed predetermined data based on a subscription relationship, determining a transmitting domain controller for transmitting the predetermined data from a plurality of domain controllers, and determining a receiving domain access device for receiving the predetermined data from a plurality of access devices, includes: in the case where the subscription relationship includes a relationship described in the form of a reference number, determining predetermined data, a transmission reference number corresponding to the predetermined data, and a reception reference number corresponding to the predetermined data; and determining a transmitting domain controller from the plurality of domain controllers according to the transmitting label, and determining a receiving domain access device from the plurality of access devices according to the receiving label.

In this embodiment, the processing steps in the case where the subscription relationship includes the relationship described in the form of a reference numeral are explained. In this case, predetermined data, a transmission index corresponding to the predetermined data, and a reception index corresponding to the predetermined data may be determined. And determining a transmitting domain controller from the plurality of domain controllers according to the transmitting label, and determining a receiving domain access device from the plurality of access devices according to the receiving label. The method achieves the purpose of rapidly and accurately determining the sending domain controller and the receiving domain access equipment.

Based on the foregoing embodiments and optional embodiments, an optional implementation is provided, and specific description is given taking an application network as a TSN network as an example.

In the related art, with the popularization of software-defined network technology and the deep research of TSN protocols, application of TSN controllers based on SDN in vehicle-mounted, military, industrial internet and other scenes becomes a research hotspot. The TSN controller performs centralized control on the data plane equipment through a southbound protocol, so that forwarding management of a data layer can be simplified, and the network resource utilization rate can be improved. However, when the network size increases, there is a technical problem that the efficiency of transmitting data is low when data is transmitted in the related art.

In view of this, an alternative embodiment of the present invention provides a method for implementing the east-west protocol of a TSN controller, which can implement efficient data transmission. The method for realizing the east-west protocol of communication among a plurality of network controllers in a complex TSN network scene can also solve the problem of limited TSN network scale. The east-west protocol for publishing and subscribing has the advantages that the expansibility is good, the identity information of a data publisher and a data subscriber can be shielded, the communication relationship can be established through the matching of the topics, the traditional point-to-point communication mode is changed, and the advantage that one part of published data can be read by a plurality of subscribers is achieved. The method divides a control plane into an inter-domain control layer and an intra-domain control layer. Wherein the super controller is responsible for inter-domain communication and the domain controller is responsible for intra-domain communication. The whole network cross-domain path calculation is divided into two parts of intra-domain path calculation and inter-domain path calculation, so that the complexity of the whole network path calculation is reduced.

Fig. 2 is a block diagram of an application architecture of a TSN controller system according to an alternative embodiment of the present invention, where, as shown in fig. 2, the application system of the TSN controller is divided into an application layer, a control layer and a link layer. The application layer mainly provides a user interaction function through a Web Server of a network Server; the control layer is mainly a super-controller (the same as the main controller), and the Domain controller Domain-controller realizes topology detection and flow calculation functions, network strategy and flow scheduling issuing configuration functions and network monitoring acquisition functions of the TSN through east-west protocol; the link layer is a network consisting of a TSN switch (like the TSN switch device described above) and a TSN end device (like the TSN access device described above). The development and resource arrangement of the application module are realized by adopting the REST API interface between the control layer and the application layer, so that the system has sufficient openness, convenience and flexibility, and supports the functions of topology discovery, user authentication, flow management, path planning and the like; and the control layer and the link layer adopt southbound interface protocols such as SNMP, NETCONF and the like to realize the network configuration capability of OT network equipment.

Fig. 3 is a hierarchical domain-division network architecture diagram of a TSN controller system provided by an alternative embodiment of the present invention, fig. 4 is a schematic diagram of east-west protocol of publish-subscribe provided by an alternative embodiment of the present invention, fig. 5 is a schematic diagram of a proxy service middleware architecture provided by an alternative embodiment of the present invention, as shown in fig. 3, 4, and 5, and the following describes a method provided by an alternative embodiment of the present invention:

S1, at initial time, a TSN network environment exists in the environment, wherein the TSN network environment comprises TSN switching equipment, TSN access equipment and a TSN controller.

S2, logically dividing the TSN network into a plurality of independent small networks according to different functions or positions of devices in the TSN network, wherein each small network is used as a domain, and a single domain controller is used for carrying out nano-tube.

And S3, the domain controller is responsible for configuration and management of topology, links, traffic and other information of the intra-domain network. The intra-domain network exposes only its edge ports to the outside world, hiding all internal network details.

S4, creating a super controller (the same as the main controller) which realizes the visual management of the global network.

S5, starting a proxy service middleware in the super controller, wherein the process comprises (1) a bottom layer adaptation layer: the layer mainly realizes the network and information intercommunication between the domain controller and the super controller; (2) The universal layer comprises an information base module and a universal publishing and subscribing registration module. The information base module is used as a server node, and all the publishing and subscribing information completes handshake matching in the information base module; the general publishing and subscribing registration module supports the application to send registration information to the information base; (3) The user interface layer, such as a hardware platform, provides a universal interface for receiving and transmitting data based on a publish-subscribe mechanism.

S6, the domain controller and the super controller can acquire own IP information and send the own IP information, the topic names subscribed and released and the topic types to the proxy service middleware in the super controller.

And S7, after receiving information such as Topic subscription and feedback (IP, type, info) of nodes, topic names, topic types and the like sent by the controller, the proxy service middleware completes handshake matching in the information base module, can store the information base module into the information base module and then feeds back subscription information to a Publisher (publicher), and the Publisher starts to send data to a Subscriber (subsriber) after receiving the subscription information.

And S8, subscribing all domain controllers in the network by the super controller, subscribing network topology changes, clock synchronization, flow configuration and the like in the domain controllers, and receiving network information in the domain sent by the domain controllers, so that visual management of the global network is realized.

And S9, the domain controller subscribes the super controller, subscribes information such as network topology change, clock synchronization, flow configuration and the like in the super controller, and receives network information in the super controller related to the domain sent from the super controller, so that the information synchronization between the domain controller and the super controller is realized.

S10, the super controller manages the domain controller besides managing all network information in the TSN network. The superordinate controller abstracts each domain into one logical switch for efficiency, privacy, security, and the like. The IP of the domain is the IP of the abstract device, the MAC of the domain is the MAC of the abstract device, and all ports of all devices in the domain are uniformly numbered as port numbers of the domain devices.

S11, the super controller stores the mapping relation between the port number of the abstracted logic switch and the port number of the intra-domain equipment so as to convert port information in the cross-domain service, and the global network topology in the domain controller only comprises all the abstracted logic switches of the domain controller and the intra-domain network.

S12, the domain controller or the super controller is used as a publisher to complete the information published to subscribers, and mainly relates to the information processing of functions such as topology information, flow information, clock synchronization and the like.

S13, when the topology in the domain changes, the domain controller issues information of the topology topic to the proxy service middleware; the proxy service middleware performs topic matching and passes the information to the subscriber supercontroller. After receiving the information issued by the domain controller, the super server abstracts the information of the changed domain controller, and issues the abstracted data as the information of the logical switch corresponding to the domain to the proxy service process, and the proxy service process performs topic matching after receiving the information and transmits the information to other domain controllers of subscribers.

S14, when the cross-domain function is involved, the operation on the super controller is needed. And the super controller publishes the information to the proxy service middleware, and the proxy service middleware performs topic matching and transmits the information to the corresponding subscriber domain controller.

And S15, when a cross-domain link is created in the super controller, the super controller segments according to the domain in which the link is located, and distributes information to the proxy service middleware, the proxy service middleware performs topic matching, and selects subscribers and transmits the information to the corresponding subscriber controllers. The information is: device IP and port number in the home domain; the IP and the logical port number of the corresponding logical switch after the adjacent domains are abstracted.

S16, when the cross-domain traffic is created in the super controller, the super controller divides the traffic into a plurality of sections according to different domains where the paths of the traffic are located. And abstracting the information of each section of flow, then publishing the abstract information to the proxy service middleware, performing topic matching by the proxy service middleware, selecting subscribers, and transmitting the information to the corresponding subscriber controllers.

By using the method and steps, the TSN controller system of the vertical hierarchical domain architecture can be realized by adopting the publish-subscribe mode, specific message types and data parameters are transmitted for the operation of different service functions on the TSN controllers, and the information synchronization among a plurality of TSN controllers is realized.

The method supports abstraction and synchronization of topology information and network information from the super controller to the domain controller, so that the method not only can provide global and visual topology and network information for users through the super controller, but also can carry out gate control calculation on the topology and the network in the domain through the domain controller, and information intercommunication between the domain controller and the bottom layer exchange is realized through a southbound interface of the domain controller, thereby greatly reducing the complexity of network scale and flow, improving the calculation efficiency of the flow in the domain, and improving the efficiency of information intercommunication with the bottom layer exchange.

By the above alternative embodiments, at least the following advantages may be achieved: the system solves the problems that the expansibility of a single controller is insufficient, the network is too complex, the calculation efficiency is low and the like in the application scenes of industrial control, intelligent driving and the like of the current TSN controller system, and the problems that information synchronization and interface protocol inefficiency cannot be carried out between TSN controllers in a multi-controller scene are solved. The method provides an east-west protocol based on a publishing-subscribing mode, and provides a rich, efficient and flexible data distribution mode for information intercommunication between TSN controllers.

It should be noted that, for simplicity of description, the foregoing method embodiments are all described as a series of acts, but it should be understood by those skilled in the art that the present invention is not limited by the order of acts described, as some steps may be performed in other orders or concurrently in accordance with the present invention. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present invention.

From the description of the above embodiments, it will be clear to a person skilled in the art that the method according to the above embodiments may be implemented by means of software plus the necessary general hardware platform, but of course also by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method of the various embodiments of the present invention.

Example 2

According to an embodiment of the present invention, there is also provided a data transmission system based on a predetermined network for implementing the above data transmission method, and fig. 6 is a block diagram of a data transmission apparatus according to an embodiment of the present invention, as shown in fig. 6, the data transmission system including: the system is described in detail below, and the predetermined network is divided into a plurality of sub-domains including a main controller 602, a plurality of domain controllers 604, a plurality of access devices 606, and a plurality of switching devices 608.

The main controller 602 is configured to obtain a subscription relationship in a predetermined network, where the subscription relationship represents a relationship between an access device and a domain controller for performing data subscription;

determining subscribed predetermined data based on the subscription relationship, determining a transmitting domain controller for transmitting the predetermined data from the plurality of domain controllers 604, and determining a receiving domain access device for receiving the predetermined data from the plurality of access devices 606;

from the plurality of switching devices 608, determining a transmission domain switching device through which predetermined data needs to be transmitted in a process of transmitting the predetermined data from the transmission domain controller to the receiving domain access device;

Determining a subdomain corresponding to the transmitting domain controller, a subdomain corresponding to the receiving domain access equipment and a subdomain corresponding to the transmission domain exchange equipment;

determining a transmission line of predetermined data according to a subdomain corresponding to the transmitting domain controller, a subdomain corresponding to the receiving domain access device and a subdomain corresponding to the transmission domain switching device;

predetermined data and transmission lines are sent to a transmission domain controller.

It should be noted that, the data transmission system can implement steps S102 to S112 in the data transmission method, and the example and application scenario implemented by the data transmission system are the same, but are not limited to those disclosed in the above embodiment 1.

Example 3

According to another aspect of the embodiment of the present invention, there is also provided an electronic device including: a processor; a memory for storing processor-executable instructions, wherein the processor is configured to execute the instructions to implement the data transmission method of any of the above.

Example 4

According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium, which when executed by a processor of an electronic device, causes the electronic device to perform the data transmission method of any one of the above.

The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.

In the foregoing embodiments of the present invention, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.

In the several embodiments provided in the present application, it should be understood that the disclosed technology content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, for example, may be a logic function division, and may be implemented in another manner, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims (10)

1. A data transmission method, comprising:

obtaining a subscription relation in a preset network, wherein the preset network is divided into a plurality of subdomains, the subdomains respectively comprise a corresponding domain controller, access equipment and switching equipment, and the subscription relation represents a relation for carrying out data subscription between the access equipment and the domain controller;

determining subscribed predetermined data based on the subscription relation, determining a transmitting domain controller for transmitting the predetermined data from a plurality of domain controllers, and determining a receiving domain access device for receiving the predetermined data from a plurality of access devices;

determining a transmission domain switching device through which the predetermined data is required to be transmitted in the process that the predetermined data is transmitted to the receiving domain access device by the transmitting domain controller from a plurality of switching devices;

Determining a subdomain corresponding to the transmitting domain controller, a subdomain corresponding to the receiving domain access device and a subdomain corresponding to the transmission domain switching device;

determining a transmission line of the predetermined data according to a subdomain corresponding to the transmitting domain controller, a subdomain corresponding to the receiving domain access device and a subdomain corresponding to the transmission domain switching device;

and transmitting the predetermined data and the transmission line to the transmission domain controller.

2. The method according to claim 1, wherein the determining the transmission line of the predetermined data based on the sub-domain corresponding to the transmitting domain controller, the sub-domain corresponding to the receiving domain access device, and the sub-domain corresponding to the transmission domain switching device, comprises:

determining a domain transmission line corresponding to the predetermined data in a first domain when the domain corresponding to the transmitting domain controller, the domain corresponding to the receiving domain access device, and the domain corresponding to the transmission domain switching device are the same domain and the transmission line includes a domain transmission line; and/or the number of the groups of groups,

and determining inter-domain transmission lines of the predetermined data among a plurality of second sub-domains and intra-domain transmission lines respectively corresponding to the plurality of second sub-domains when the sub-domain corresponding to the transmitting domain controller, the sub-domain corresponding to the receiving domain access device and the sub-domain corresponding to the transmitting domain switching device are not the same sub-domain and the transmission lines include inter-domain transmission lines and intra-domain transmission lines.

3. The method according to claim 1, wherein the determining the transmission line of the predetermined data based on the sub-domain corresponding to the transmitting domain controller, the sub-domain corresponding to the receiving domain access device, and the sub-domain corresponding to the transmission domain switching device, comprises:

under the condition that the number of the transmission domain switching devices is multiple and the domains corresponding to the multiple transmission domain switching devices are not the same subdomain, determining a target transmission domain required to pass through for transmitting the preset data according to the multiple transmission domain switching devices;

dividing the preset data to obtain sub-data respectively corresponding to the target transmission domains;

and determining transmission lines corresponding to the plurality of sub-data respectively according to the sub-domain corresponding to the transmitting domain controller, the sub-domain corresponding to the receiving domain access device and the sub-domains corresponding to the plurality of transmission domain switching devices respectively.

4. The method of claim 1, wherein the obtaining a subscription relationship in a predetermined network comprises:

receiving address information and subscription information corresponding to the subdomains;

and determining the subscription relation based on the address information corresponding to the multiple subdomains and the subscription information.

5. The method as recited in claim 1, further comprising:

and under the condition that a subdomain with changed subscription information exists in the subdomains, receiving subscription change information sent by a third subdomain to update the subscription relation, wherein the third subdomain is the subdomain with changed subscription information in the subdomains.

6. The method as recited in claim 1, further comprising:

and receiving equipment changing information sent by a fourth sub-domain under the condition that the sub-domain in which the equipment in the domain is changed exists in the plurality of sub-domains, wherein the fourth sub-domain is the sub-domain in which the equipment in the domain is changed in the plurality of sub-domains.

7. The method of claim 1, wherein the predetermined network is a time sensitive network, TSN, network.

8. The method according to any one of claims 1 to 7, wherein the determining subscribed predetermined data based on the subscription relation, determining a transmitting domain controller for transmitting the predetermined data from a plurality of domain controllers, and determining a receiving domain access device for receiving the predetermined data from a plurality of access devices, comprises:

In the case that the subscription relationship includes a relationship described in the form of a reference number, determining the predetermined data, a transmission reference number corresponding to the predetermined data, and a reception reference number corresponding to the predetermined data;

and determining the transmitting domain controller from the plurality of domain controllers according to the transmitting label, and determining the receiving domain access device from the plurality of access devices according to the receiving label.

9. A data transmission system based on a predetermined network, the data transmission system comprising: a main controller, a plurality of domain controllers, a plurality of access devices and a plurality of switching devices, wherein the predetermined network is divided into a plurality of sub-domains, the plurality of sub-domains respectively comprise the corresponding domain controllers, the access devices and the switching devices,

the main controller is used for acquiring a subscription relation in the preset network, wherein the subscription relation represents a relation for carrying out data subscription between the access equipment and the domain controller;

determining subscribed predetermined data based on the subscription relation, determining a transmitting domain controller for transmitting the predetermined data from the plurality of domain controllers, and determining a receiving domain access device for receiving the predetermined data from the plurality of access devices;

Determining a transmission domain switching device through which the predetermined data is required to be transmitted in the process that the predetermined data is transmitted to the receiving domain access device by the transmitting domain controller from a plurality of switching devices;

determining a subdomain corresponding to the transmitting domain controller, a subdomain corresponding to the receiving domain access device and a subdomain corresponding to the transmission domain switching device;

determining a transmission line of the predetermined data according to a subdomain corresponding to the transmitting domain controller, a subdomain corresponding to the receiving domain access device and a subdomain corresponding to the transmission domain switching device;

and transmitting the predetermined data and the transmission line to the transmission domain controller.

10. An electronic device, comprising:

a processor;

a memory for storing the processor-executable instructions;

wherein the processor is configured to execute the instructions to implement the data transmission method of any one of claims 1 to 8.