CN117081981A - Control method, device and system for data transmission of 5G industrial gateway equipment - Google Patents

Control method, device and system for data transmission of 5G industrial gateway equipment Download PDF

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Publication number
CN117081981A
CN117081981A CN202211009840.5A CN202211009840A CN117081981A CN 117081981 A CN117081981 A CN 117081981A CN 202211009840 A CN202211009840 A CN 202211009840A CN 117081981 A CN117081981 A CN 117081981A
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China
Prior art keywords
message
network
field
data
global
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Inventor
王永勇
侯宇鑫
黄振江
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Guangzhou Tongkang Chuangzhi Software Co ltd
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Guangzhou Tongkang Chuangzhi Software Co ltd
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Priority to CN202211009840.5A priority Critical patent/CN117081981A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/24—Multipath
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42—Loop networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42—Loop networks
    • H04L12/437—Ring fault isolation or reconfiguration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Small-Scale Networks (AREA)

Abstract

The invention discloses a control method, a device and a system for data transmission of 5G industrial gateway equipment, which are characterized in that equipment interfaces for receiving network messages are identified, when a first network interface is identified, fields are added to the network messages, and an obtained third network message is transmitted through a second network interface and a third network interface, so that the marking processing and the multilink sending of the network messages are realized; and when the second network interface or the third network interface is identified, deleting the field of the network message, and transmitting the obtained fourth network message through the first network interface to realize the analysis of the network message. According to the invention, different types of network connection can be built through multi-network interface integration, and redundant links are added in an industrial control system; and the data transmission efficiency of the industrial control system after the redundant link is increased is improved by combining the network message custom field technology with the multi-network interface.

Description

Control method, device and system for data transmission of 5G industrial gateway equipment
Technical Field
The invention relates to the technical field of network multimedia terminals, in particular to a control method, a device and a system for data transmission of 5G industrial gateway equipment.
Background
With the popularization of 5G technology and the increasing development of industrial internet, in the traditional industrial scenario (two-layer ring network), the requirement of using a 5G network as a redundant link (multi-transceiver) appears, however, the existing network redundancy technology is not an existing technology or method directly applicable to the scenario.
The link backup technology in the prior art comprises an LACP protocol and a VRRP protocol, but the LACP protocol only supports two-layer and three-layer aggregation, and the VRRE protocol only supports the link backup of three-layer NAT routers, so that for the application scenario of a wired ring network (two-layer switching network) and a 5G wireless communication network (three-layer routing network), the existing link backup technology cannot realize the data transmission under the scenario of redundant links of the two-layer switching network and the three-layer routing network.
Therefore, a control strategy for data transmission of a 5G industrial gateway device is needed to solve the problem of low data transmission efficiency after adding redundant links in an industrial control system.
Disclosure of Invention
The embodiment of the invention provides a control method, a device and a system for data transmission of 5G industrial gateway equipment, which are used for improving the data transmission efficiency after a redundant link is added in an industrial control system.
In order to solve the above problems, an embodiment of the present invention provides a method for controlling data transmission of a 5G industrial gateway device, including:
Acquiring a network message sent by external equipment, and judging an equipment interface for receiving the network message; wherein, the network message includes: one or more of a first network message or a second network message, wherein the first network message comprises an original field, and the second network message comprises the original field and a custom field; the device interface includes: the system comprises a first network interface, a second network interface and a third network interface, wherein the first network interface is used for connecting industrial control equipment, the second network interface is used for connecting a main network link between 5G industrial gateway equipment, and the third network interface is used for connecting a redundant network link between 5G industrial gateway equipment;
when the equipment interface for receiving the network message is a first network interface, the network message is the first network message, a third network message is obtained through a newly added field and a global message ID database according to the first network message, and the third network message is transmitted with the third network interface through a second network interface; the third network message comprises an original field and a custom field;
when the equipment interface for receiving the network message is a second network interface or a third network interface, the network message is a second network message, a fourth network message is obtained through a first preset field, a second preset field and a global message ID database according to the second network message, and the fourth network message is transmitted through the first network interface; wherein the fourth network message includes an original field.
From the above, the invention has the following beneficial effects:
the invention provides a control method for data transmission of 5G industrial gateway equipment, which can connect different equipment through three network interfaces of the 5G industrial gateway equipment so as to connect different data transmission links; the method comprises the steps of identifying equipment interfaces for receiving network messages, adding fields to the network messages when a first network interface is identified, and transmitting an obtained third network message through a second network interface and the third network interface to realize marking processing and multilink sending of the network messages; and when the second network interface or the third network interface is identified, deleting the field of the network message, and transmitting the obtained fourth network message through the first network interface to realize the analysis of the network message. According to the invention, different types of network connection can be built through multi-network interface integration, and redundant links are added in an industrial control system; and the data transmission efficiency of the industrial control system after the redundant link is increased is improved by combining the network message custom field technology with the multi-network interface.
As an improvement of the above solution, the obtaining, according to the first network packet, the third network packet through the newly added field and the global packet ID database specifically includes:
Obtaining local ID data according to basic information of the 5G industrial gateway equipment, and obtaining message counting data according to a message counter of the 5G industrial gateway equipment;
obtaining global message data according to the local ID data and the message count data, and judging the validity of the global message data through a global message ID database according to the global message data;
when the data of the global message is successfully matched with the data in the global message ID database, judging that the data is illegal, and stopping the operation of adding the field to the first network message; when the matching of the global message data and the data in the global message ID database fails, judging that the global message data is legal, recording the time for generating the global message data and the global message data into the global message ID database, and combining the global message data with a third preset field and a fourth preset field to obtain a newly added field;
adding the newly added field into the original field of the first network message according to the original field of the first network message, thereby obtaining third network message data; the custom field of the third network packet is specifically a newly added field.
By implementing the improvement scheme of the embodiment, the embodiment acquires the global message data of the basic information and the message counter of the 5G industrial gateway equipment, and performs data matching in the global message ID database, if the matching is successful, the first network message is processed in the equipment at the moment, and repeated operation is not needed, so that the field adding operation is stopped. And the custom field is generated by combining the third preset field and the fourth preset field, so that the network report added with the custom field has uniqueness, and a foundation is laid for improving the data transmission efficiency.
As an improvement of the above solution, the obtaining, according to the second network packet, the fourth network packet through the first preset field, the second preset field and the global packet ID database specifically includes:
judging the validity of the second network message according to the original field and the custom field of the second network message; wherein, the custom field includes: local ID data, message count data, a first field and a second field;
when the first field of the second network message is inconsistent with the first preset field or the second field of the second network message is inconsistent with the second preset field, judging that the first field of the second network message is illegal, and discarding the second network message;
when the first field of the second network message is consistent with the first preset field, the second field is consistent with the second preset field, and the local ID data and the message count data of the second network message exist in the global message ID database, judging that the second network message is illegal, and discarding the second network message;
when the first field of the second network message is consistent with the first preset field, the second field is consistent with the second preset field, and the local ID data and the message count data of the second network message are not in the global message ID database, judging that the second network message is legal, deleting the custom field in the second network message, and obtaining a fourth network message.
According to the implementation of the improvement scheme of the embodiment, the uniqueness judgment is carried out by identifying the custom field of the second network message, if the custom field is legal, the second network message is the network message which can be processed by the device, and whether the second network message is processed by the device is judged by judging whether the local ID data and the message count data of the second network message exist in the global message ID database or not according to the judgment result, so that the repeated operation is avoided, and the data transmission efficiency is improved.
As an improvement of the above-described scheme, the present embodiment further includes: further comprises: according to a first time threshold, cleaning the global message ID database, specifically:
judging the storage time of the global message data stored in the global message ID database;
and when the storage time of the global message data is greater than or equal to the first time threshold, deleting the global message data corresponding to the storage time greater than or equal to the first time threshold.
By implementing the improvement scheme of the embodiment, the embodiment judges whether the global message data is overtime or not by identifying the storage time of the global message data in the global message ID database, and maintains a certain global message data amount in the global message ID database by deleting the overtime global message data, so that the running load of a processor is reduced; in order to save the operation amount, when global message data is generated, the message counting data is usually recycled, and the operation of recycling can lead to the occurrence of repetition or illegal identification of the global message data, so that the deleting of overtime global message data can ensure the uniqueness of the global message data and avoid the occurrence of the problem of repetition or illegal identification.
As an improvement of the above solution, the transmitting the fourth network packet through the first network interface specifically includes: and transmitting the fourth network message to the system LAN bridge through the first network interface according to the fourth network message, so that the system LAN bridge transmits the fourth network message to the industrial control equipment through the fourth network interface according to the FDB forwarding table.
After receiving the fourth network message, the implementation of the improvement scheme of the embodiment needs to transmit the fourth network message to the industrial control equipment through the system LAN according to the FDB forwarding table, so that the function of forwarding the network message to the industrial control equipment of the 5G industrial gateway equipment is realized.
Correspondingly, an embodiment of the present invention further provides a control device for data transmission of a 5G industrial gateway device, including: the device comprises a data acquisition module, a data first processing module and a data second processing module;
the data acquisition module is used for acquiring a network message sent by the external equipment and judging an equipment interface for receiving the network message; wherein, the network message includes: one or more of a first network message or a second network message, wherein the first network message comprises an original field, and the second network message comprises the original field and a custom field; the device interface includes: the system comprises a first network interface, a second network interface and a third network interface, wherein the first network interface is used for connecting industrial control equipment, the second network interface is used for connecting a main network link between 5G industrial gateway equipment, and the third network interface is used for connecting a redundant network link between 5G industrial gateway equipment;
The data first processing module is configured to obtain a third network packet according to the first network packet through the newly added field and the global packet ID database when the device interface for receiving the network packet is the first network interface, and transmit the third network packet to the third network interface through the second network interface; the third network message comprises an original field and a custom field;
the data second processing module is configured to obtain a fourth network packet according to the second network packet through the first preset field, the second preset field and the global packet ID database when the device interface for receiving the network packet is the second network interface or the third network interface, and transmit the fourth network packet through the first network interface; wherein the fourth network message includes an original field.
As an improvement of the above solution, the obtaining, according to the first network packet, the third network packet through the newly added field and the global packet ID database specifically includes:
obtaining local ID data according to basic information of the 5G industrial gateway equipment, and obtaining message counting data according to a message counter of the 5G industrial gateway equipment;
Obtaining global message data according to the local ID data and the message count data, and judging the validity of the global message data through a global message ID database according to the global message data;
when the data of the global message is successfully matched with the data in the global message ID database, judging that the data is illegal, and stopping the operation of adding the field to the first network message; when the matching of the global message data and the data in the global message ID database fails, judging that the global message data is legal, recording the time for generating the global message data and the global message data into the global message ID database, and combining the global message data with a third preset field and a fourth preset field to obtain a newly added field;
adding the newly added field into the original field of the first network message according to the original field of the first network message, thereby obtaining third network message data; the custom field of the third network packet is specifically a newly added field.
As an improvement of the above solution, the obtaining, according to the second network packet, the fourth network packet through the first preset field, the second preset field and the global packet ID database specifically includes:
Judging the validity of the second network message according to the original field and the custom field of the second network message; wherein, the custom field includes: local ID data, message count data, a first field and a second field;
when the first field of the second network message is inconsistent with the first preset field or the second field of the second network message is inconsistent with the second preset field, judging that the first field of the second network message is illegal, and discarding the second network message;
when the first field of the second network message is consistent with the first preset field, the second field is consistent with the second preset field, and the local ID data and the message count data of the second network message exist in the global message ID database, judging that the second network message is illegal, and discarding the second network message;
when the first field of the second network message is consistent with the first preset field, the second field is consistent with the second preset field, and the local ID data and the message count data of the second network message are not in the global message ID database, judging that the second network message is legal, deleting the custom field in the second network message, and obtaining a fourth network message.
As an improvement of the above-described scheme, the present embodiment further includes: the data cleaning module is used for cleaning the global message ID database according to a first time threshold, and specifically comprises the following steps: judging the storage time of the global message data stored in the global message ID database; and when the storage time of the global message data is greater than or equal to the first time threshold, deleting the global message data corresponding to the storage time greater than or equal to the first time threshold.
As an improvement of the above solution, the transmitting the fourth network packet through the first network interface specifically includes: and transmitting the fourth network message to the system LAN bridge through the first network interface according to the fourth network message, so that the system LAN bridge transmits the fourth network message to the industrial control equipment through the fourth network interface according to the FDB forwarding table.
Correspondingly, the embodiment of the invention also provides a control system for data transmission of the 5G industrial gateway equipment, which comprises the following components: a control device for data transmission of a plurality of 5G industrial gateway devices, a plurality of PLC devices, a plurality of DCS devices, a wired ring network switch network and a 5G special network; the control device for data transmission of each 5G industrial gateway device is applied to the control method for data transmission of the 5G industrial gateway device; the control device for data transmission of each 5G industrial gateway device is respectively connected with each PLC device and each DCS device through a first network interface; the second network interface of the control device for data transmission of each 5G industrial gateway device is connected through the wired ring network switch network, and the third network interface of the control device for data transmission of each 5G industrial gateway device is connected through the 5G special network.
Drawings
Fig. 1 is a flow chart of a control method for data transmission of a 5G industrial gateway device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a control device for data transmission of a 5G industrial gateway device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a control system for data transmission of a 5G industrial gateway device according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating the distinction between a first network packet and a third network packet according to an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating the distinction between a second network packet and a fourth network packet according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a control system for data transmission of a 5G industrial gateway device according to another embodiment of the present invention;
fig. 7 is a schematic flow chart of data transmission of a redundant link in a control system for data transmission of a 5G industrial gateway device according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a networking effect of an access optical fiber network link of a 5G industrial gateway device according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a networking effect of an access optical fiber network link and a 5G network link of a 5G industrial gateway device according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1, fig. 1 is a flow chart of a control method for data transmission of a 5G industrial gateway device according to an embodiment of the present invention, as shown in fig. 1, the embodiment includes steps 101 to 103, where each step is specifically as follows:
step 101: acquiring a network message sent by external equipment, and judging an equipment interface for receiving the network message; wherein, the network message includes: one or more of a first network message or a second network message, wherein the first network message comprises an original field, and the second network message comprises the original field and a custom field; the device interface includes: the system comprises a first network interface, a second network interface and a third network interface, wherein the first network interface is used for connecting industrial control equipment, the second network interface is used for connecting a main network link between 5G industrial gateway equipment, and the third network interface is used for connecting a redundant network link between 5G industrial gateway equipment.
In a specific embodiment, the first network interface may be tapmtsr0 for connecting to an industrial control device (including DCS device or PLC device); the second network interface may be vxlan a for connection of fiber network links between respective 5G industrial gateway devices; the third network interface may be a vxlanB for connection of 5G network links between respective 5G industrial gateway devices.
Step 102: when the equipment interface for receiving the network message is a first network interface, the network message is the first network message, a third network message is obtained through a newly added field and a global message ID database according to the first network message, and the third network message is transmitted with the third network interface through a second network interface; the third network message comprises an original field and a custom field.
In this embodiment, the obtaining, according to the first network packet, the third network packet through the newly added field and the global packet ID database specifically includes:
obtaining local ID data according to basic information of the 5G industrial gateway equipment, and obtaining message counting data according to a message counter of the 5G industrial gateway equipment;
obtaining global message data according to the local ID data and the message count data, and judging the validity of the global message data through a global message ID database according to the global message data;
When the data of the global message is successfully matched with the data in the global message ID database, judging that the data is illegal, and stopping the operation of adding the field to the first network message; when the matching of the global message data and the data in the global message ID database fails, judging that the global message data is legal, recording the time for generating the global message data and the global message data into the global message ID database, and combining the global message data with a third preset field and a fourth preset field to obtain a newly added field;
adding the newly added field into the original field of the first network message according to the original field of the first network message, thereby obtaining third network message data; the custom field of the third network packet is specifically a newly added field.
In this embodiment, the transmitting the fourth network packet through the first network interface specifically includes: and transmitting the fourth network message to the system LAN bridge through the first network interface according to the fourth network message, so that the system LAN bridge transmits the fourth network message to the industrial control equipment through the fourth network interface according to the FDB forwarding table.
In a specific embodiment, taking DCS (external device) actively accessing PLC (external device) as an example, an application of DCS (external device) sends a first network message to a LAN bridge of a 5G industrial gateway device, and the system LAN bridge forwards the first network message to a virtual ethernet interface tapmtsr0 (first network interface), where the following processing is performed according to the network message received by tapmtsr 0: and generating a global unique message ID, inserting a custom data format, and transmitting redundant links to a plurality of network interfaces.
Using DCS to actively access a PLC, for example, comprises the steps of:
1) When the application layer receives a first network message from the tapmtsr 0;
2) Generating a global unique message ID (global message data), and adding one to the local counter;
3) Comparing the global unique message ID with a global unique message ID database, and if the global unique message ID exists, not processing the first network message; if not, recording the message ID and the current time information into a database (the condition is not met because the generation of the globally unique message ID can ensure the uniqueness);
4) And combining the global unique message ID, the third preset field and the fourth preset field to generate a custom field, and inserting the custom field into the original message.
In a specific embodiment, for better illustrating the distinction between the first network packet and the third network packet, please refer to fig. 4, as shown in fig. 4: the first network message is an original message, including: DST-MAC (6B), SRC-MAC (6B), proto (2B) and IP messages (L3 messages); the third network message is a modified message, including: original message: DST-MAC (6B), SRC-MAC (6B), proto (2B) and IP messages (L3 messages) and custom messages: proto (2B), magic (4B), native ID (4B) and native message count self-increment (4B); the local ID and the local message count are self-increased to form a global unique message ID (namely the global message data) which is 8 bytes in total, and the global unique message ID can be used as a unique identifier of each message, and since each 5G industrial gateway equipment ID is unique, the self-increase of the local message counter is unique, and therefore all the message IDs of the formed 8 bytes in the whole network topology are unique.
In a specific embodiment, the custom message is specifically:
proto: the protocol field of the L2 layer is represented using a custom 0x8478 (this value is used here only as an illustration of the present proposal, other values may be modified in actual scene applications);
magic: a custom 0xde0dfee1 (this value is used herein as an illustration, and is customizable) is used to indicate that the message belongs to the message sent by the 5G industrial gateway device;
the local ID: using a 4 byte definition, it is necessary to ensure the native ID uniqueness of each 5G industrial gateway device of the entire network topology at the time of the scene application;
self-increment of the local message counter: the self-increment is performed every time a message is received by the 5G industrial gateway device, and the loop is performed again until the counter overflows an unsigned integer of 4 bytes (the range of values is 0-4294967295).
Step 103: when the equipment interface for receiving the network message is a second network interface or a third network interface, the network message is a second network message, a fourth network message is obtained through a first preset field, a second preset field and a global message ID database according to the second network message, and the fourth network message is transmitted through the first network interface; wherein the fourth network message includes an original field.
In this embodiment, the obtaining, according to the second network packet, the fourth network packet through the first preset field, the second preset field and the global packet ID database specifically includes:
judging the validity of the second network message according to the original field and the custom field of the second network message; wherein, the custom field includes: local ID data, message count data, a first field and a second field;
when the first field of the second network message is inconsistent with the first preset field or the second field of the second network message is inconsistent with the second preset field, judging that the first field of the second network message is illegal, and discarding the second network message;
when the first field of the second network message is consistent with the first preset field, the second field is consistent with the second preset field, and the local ID data and the message count data of the second network message exist in the global message ID database, judging that the second network message is illegal, and discarding the second network message;
when the first field of the second network message is consistent with the first preset field, the second field is consistent with the second preset field, and the local ID data and the message count data of the second network message are not in the global message ID database, judging that the second network message is legal, deleting the custom field in the second network message, and obtaining a fourth network message.
In a specific embodiment, as shown in fig. 6, the messages received by the 5G industrial gateway from the VXLAN network of the optical fiber or the VXLAN network of the 5G are all from the messages sent by other 5G industrial gateway devices. The process flow is therefore described as follows. The general flow checks the validity of the message, removes the repeated message, submits the message to the LAN bridge of the system, and further sends the message to the DCS/PLC. The method comprises the following specific steps:
1) After receiving a message from the vxlanA or vxlanB interface, it is checked whether the value of the field proco is equal to 0x8478 (the definition of this value is identical to that described in the above-described embodiment of step 102), and if the fields are not equal, the message is discarded (indicating that the message does not belong to a message sent by a redundant link).
2) Check if the value of field mac is equal to 0xde0dfe 1 (the definition of this value is consistent with the embodiment of step 102 above), and discard the message if the fields are not equal (indicating that the message does not belong to a message sent by a redundant link).
3) Extracting the global unique message ID, comparing the global unique message ID with a global unique message ID database, discarding the message (indicating that the device has received the message and processed the message) if the message exists, and recording the message ID and the current time information to the global unique message ID database if the message does not exist.
4) Deleting the custom data in the message, recovering the message, copying the message to a tapmtsr0 interface, and processing the message by a LAN bridge of the system.
In a specific embodiment, for better illustrating the distinction between the second network packet and the fourth network packet, please refer to fig. 5, as shown in fig. 5: the second network message is a received original message, including: original message: DST-MAC (6B), SRC-MAC (6B), proto (2B) and IP messages (L3 messages) and custom messages: proto (2B), magic (4B), native ID (4B) and native message count self-increment (4B); the fourth network message is a recovered message, including: DST-MAC (6B), SRC-MAC (6B), proto (2B) and IP messages (L3 messages).
In this embodiment, further comprising: according to a first time threshold, cleaning the global message ID database, specifically:
judging the storage time of the global message data stored in the global message ID database;
and when the storage time of the global message data is greater than or equal to the first time threshold, deleting the global message data corresponding to the storage time greater than or equal to the first time threshold.
In a specific embodiment, the value of "self-increment of the local message count" of the 5G industrial gateway device is recycled, so that the globally unique message ID generated by the gateway device has a problem of conflict. Considering that the target device is reached after a first time threshold of delay does not exist for one message transmission in the network, the method and the device for deleting the message ID in the global unique message ID database, which has overtime, are used for executing the deletion in a timing mode in the invention. The method only needs to ensure that the self-increment of the local message count in the first time threshold is not recycled, and in other words, the method only needs to ensure that the messages received by the 5G industrial gateway equipment from the DCS/PLC in the first time threshold are not more than 4294967295 messages.
In a specific embodiment, the first threshold may be 30 seconds.
Correspondingly, the embodiment also provides a control system for data transmission of the 5G industrial gateway device, which comprises: a control device 301 for data transmission of 5G industrial gateway equipment, a plurality of PLC equipment 302, a plurality of DCS equipment 303, a wired ring network switch network 304 and a 5G private network 305; wherein, the control device 301 of data transmission of each 5G industrial gateway device is applied to the control method of data transmission of the 5G industrial gateway device according to the present invention; the control device 301 for data transmission of each 5G industrial gateway device is connected to each PLC device 302 and each DCS device 303 through a first network interface; the second network interface of the control device 301 for data transmission of each 5G industrial gateway device is connected through the wired ring switch network 304, and the third network interface of the control device for data transmission of each 5G industrial gateway device is connected through the 5G private network 305.
In a specific embodiment, each PLC sets a fixed IP address, in the same subnet as the DCS; a plurality of DCS devices access all the PLC devices through a fixed IP, wherein the PLC devices IP and the DCS IP belong to the same subnet section; the 5G industrial gateway equipment not only supports the optical communication technology, but also is connected to the annular network through an optical network physical layer to provide a two-layer wired communication network for the DCS/PLC; and also supports 5G wireless communication technology, and provides a 5G wireless network for DCS/PLC to connect to a 5G private network (the explanation is that the wireless IPs of 5G industrial gateways under the 5G network can be mutually accessed, but the 5G IPs cannot be directly accessed with a ring network).
In a specific embodiment, for better illustrating the data transmission process of the redundant link in the control system for data transmission of the 5G industrial gateway device, please refer to fig. 7, as shown in fig. 7, fig. 7 is a schematic flow chart of data transmission of the redundant link in the control system for data transmission of the 5G industrial gateway device, including steps 701 to 707, where the steps are specifically as follows:
step 701: creating a tap virtual Ethernet interface, adding the tap virtual Ethernet interface to a system LAN (local area network) bridge, and generating a tap tsr0 interface (a first network interface) in a system; the first command is executed as follows:
iptuntap add dev tapmtsr0 mode tap；
ip link set dev tapmtsr0 mtu 1500；
ip link set dev tapmtsr0 up；
brctladdif br0 tapmtsr0；
when the DCS/PLC sends the network message to the LAN bridge of the 5G industrial gateway device, the system LAN bridge forwards the network message to the network interface tapmtsr0 according to fdb, and receives the network message at the application layer; meanwhile, when the application layer sends a network message to the tapmtsr0 interface, the system LAN bridge forwards the network message to the DCS/PLC equipment according to the fdb forwarding table.
Step 702: establishing a large two-layer network A through a VXLAN protocol based on an optical fiber network, so as to generate a vxLAN A interface (a second network interface) in the system;
the second command is executed as follows:
ip link add vxlanA type vxlan id 1dstport 1701；
bridge fdb append 00:00:00:00:00:00 dev vxlanAdst 192.168.0.101 via eth1.5；
bridge fdb append 00:00:00:00:00:00 dev vxlanAdst 192.168.0.102 via eth1.5；
bridge fdb append 00:00:00:00:00:00dev vxlanAdstxxx.xxx.xxx.xxx via eth1.5; the system creates VXLAN a interface, establishes VXLAN connection with other 5G industrial gateway devices based on the optical fiber network, and forwards unidentified MAC addresses to other 5G industrial gateway devices, and the above command xxx.xxx.xxx.xxx represents the IP of the optical fiber network of the 5G industrial gateway device, which is not listed here (which means that the optical fiber network itself belongs to a two-layer network, and the explanation is made here for the large two-layer network which refers to the VXLAN technology established based on the optical fiber needs, which means that when the 5G industrial gateway receives a message of which the lower level device (DCS/PLC) sends the maximum MTU, the modified message exceeds the MTU when the 5G industrial gateway modifies the inserted private data format, so that the large two-layer network formed by using the VXLAN technology (based on UDP protocol) can transmit the message exceeding the MTU (the IP message grouping and reorganization are performed automatically by the system kernel), and the re-autonomous realization of the grouping and reorganization of the message is not needed at the application layer. For better illustration, please refer to fig. 8, fig. 8 is a diagram illustrating the networking effect after step 702.
Step 703: establishing a large two-layer network B through a VXLAN protocol based on a 5G network, so as to generate a vxLAN B interface (a third network interface) in the system;
the third command is executed as follows:
ip link add vxlanB type vxlan id 1dstport 1701；
bridge fdb append 00:00:00:00:00:00 dev vxlanBdst 172.10.1.201 via rmnet_data0；
bridge fdb append 00:00:00:00:00:00 dev vxlanBdst 172.10.1.202 via rmnet_data0；
bridge fdb append 00:00:00:00:00:00 dev vxlanBdstxxx.xxx.xxx.xxx via rmnet_data0；
the system creates a VXLAN b interface, establishes VXLAN with other 5G industrial gateway devices based on the 5G network, and forwards unidentified MAC addresses to other 5G industrial gateway devices, where the command xxx.xxx.xxx.xxx represents IP of the 5G network of the 5G industrial gateway device (note: since the 5G network is a three-layer network based on IP, where the 5G network establishes a large two-layer network based on VXLAN technology. For better illustration, please refer to fig. 9, fig. 9 is a diagram of the networking effect after steps 702 and 703.
Step 704: monitoring and receiving network messages for a tapmtsr0/vxlan A/vxlan B interface, and if the messages come from the tapmtsr0 interface, turning to step 705; if the message is from the vxlanA/vxlanB interface, go to step 706;
step 705: generating a global unique message ID according to a message received by the tapmtsr0, inserting a custom data format, and detecting whether the global message ID exists in a global unique message database or not at the same time: if yes, stopping inserting the custom data format, and returning to step 704, if not, storing the global unique message ID in the global unique message database, and simultaneously sending the message inserted into the custom data format to the vxlanA interface and the vxlanB interface;
step 706: according to the messages received by the vxlanA interface and the vxlanB, checking, explaining and customizing data formats, extracting a global unique message ID, and simultaneously detecting whether the extracted global message ID exists in a global unique heat preservation database or not: if yes, stopping interpreting the custom data format, and returning to step 704, if not, storing the global unique message ID in the global unique message database, and simultaneously sending a message for deleting the custom data format to the vxlanA interface and the vxlanB interface;
Step 707: the timing task triggers the deletion of data that is overtime from the globally unique message ID database.
In this embodiment, different devices can be connected through three network interfaces of the 5G industrial gateway device, so as to connect different data transmission links; the method comprises the steps of identifying equipment interfaces for receiving network messages, adding fields to the network messages when a first network interface is identified, and transmitting an obtained third network message through a second network interface and the third network interface to realize marking processing and multilink sending of the network messages; and when the second network interface or the third network interface is identified, deleting the field of the network message, and transmitting the obtained fourth network message through the first network interface to realize the analysis of the network message. The embodiment is not only suitable for a 5G network communication scene, but also suitable for a scene that network technologies such as 4G, WIFI are used as redundant links, repeated processing is removed at a receiving end by simultaneously transmitting a plurality of paths at the same time, the receiving and transmitting of network messages are not affected when one link fails, and the data transmission efficiency of an industrial control system after the redundant links are increased is improved.
Example two
Referring to fig. 2, fig. 2 is a schematic structural diagram of a control device for data transmission of a 5G industrial gateway device according to an embodiment of the present invention, including: a data acquisition module 201, a data first processing module 202, and a data second processing module 203;
the data acquisition module 201 is configured to acquire a network packet sent by an external device, and determine an equipment interface for receiving the network packet; wherein, the network message includes: one or more of a first network message or a second network message, wherein the first network message comprises an original field, and the second network message comprises the original field and a custom field; the device interface includes: the system comprises a first network interface, a second network interface and a third network interface, wherein the first network interface is used for connecting industrial control equipment, the second network interface is used for connecting a main network link between 5G industrial gateway equipment, and the third network interface is used for connecting a redundant network link between 5G industrial gateway equipment;
the data first processing module 202 is configured to obtain a third network packet according to the first network packet through the newly added field and the global packet ID database when the device interface for receiving the network packet is the first network interface, and transmit the third network packet to the third network interface through the second network interface; the third network message comprises an original field and a custom field;
The data second processing module 203 is configured to obtain a fourth network packet according to the second network packet through the first preset field, the second preset field, and the global packet ID database when the device interface for receiving the network packet is the second network interface or the third network interface, and transmit the fourth network packet through the first network interface; wherein the fourth network message includes an original field.
As an improvement of the above solution, the obtaining, according to the first network packet, the third network packet through the newly added field and the global packet ID database specifically includes:
obtaining local ID data according to basic information of the 5G industrial gateway equipment, and obtaining message counting data according to a message counter of the 5G industrial gateway equipment;
obtaining global message data according to the local ID data and the message count data, and judging the validity of the global message data through a global message ID database according to the global message data;
when the data of the global message is successfully matched with the data in the global message ID database, judging that the data is illegal, and stopping the operation of adding the field to the first network message; when the matching of the global message data and the data in the global message ID database fails, judging that the global message data is legal, recording the time for generating the global message data and the global message data into the global message ID database, and combining the global message data with a third preset field and a fourth preset field to obtain a newly added field;
Adding the newly added field into the original field of the first network message according to the original field of the first network message, thereby obtaining third network message data; the custom field of the third network packet is specifically a newly added field.
As an improvement of the above solution, the obtaining, according to the second network packet, the fourth network packet through the first preset field, the second preset field and the global packet ID database specifically includes:
judging the validity of the second network message according to the original field and the custom field of the second network message; wherein, the custom field includes: local ID data, message count data, a first field and a second field;
when the first field of the second network message is inconsistent with the first preset field or the second field of the second network message is inconsistent with the second preset field, judging that the first field of the second network message is illegal, and discarding the second network message;
when the first field of the second network message is consistent with the first preset field, the second field is consistent with the second preset field, and the local ID data and the message count data of the second network message exist in the global message ID database, judging that the second network message is illegal, and discarding the second network message;
When the first field of the second network message is consistent with the first preset field, the second field is consistent with the second preset field, and the local ID data and the message count data of the second network message are not in the global message ID database, judging that the second network message is legal, deleting the custom field in the second network message, and obtaining a fourth network message.
As an improvement of the above-described scheme, the present embodiment further includes: the data cleaning module 204, where the data cleaning module 204 is configured to perform cleaning operation on the global packet ID database according to a first time threshold, specifically: judging the storage time of the global message data stored in the global message ID database; and when the storage time of the global message data is greater than or equal to the first time threshold, deleting the global message data corresponding to the storage time greater than or equal to the first time threshold.
As an improvement of the above solution, the transmitting the fourth network packet through the first network interface specifically includes: and transmitting the fourth network message to the system LAN bridge through the first network interface according to the fourth network message, so that the system LAN bridge transmits the fourth network message to the industrial control equipment through the fourth network interface according to the FDB forwarding table.
The embodiment obtains the network message sent by the external equipment through the data obtaining module, and judges the equipment interface for receiving the network message; when the equipment interface for receiving the network message is a first network interface, generating a third network message through a data first processing module, and transmitting the third network message through a second network interface and the third network interface; when the equipment interface for receiving the network message is the second network interface or the third network interface, generating a fourth network message through the data second processing module, and transmitting the fourth network message through the first network interface. According to the invention, different types of network connection can be built through multi-network interface integration, and redundant links are added in an industrial control system; and the data transmission efficiency of the industrial control system after the redundant link is increased is improved by combining the network message custom field technology with the multi-network interface.
Example III
Referring to fig. 10, fig. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
A terminal device of this embodiment includes: a processor 1001, a memory 1002 and a computer program stored in said memory 1002 and executable on said processor 1001. The processor 1001, when executing the computer program, implements the steps in the embodiment of the control method for data transmission of the respective 5G industrial gateway device described above, for example, all the steps of the control method for data transmission of the 5G industrial gateway device shown in fig. 1. Alternatively, the processor may implement functions of each module in the above-described device embodiments when executing the computer program, for example: all modules of the control device for data transmission of the 5G industrial gateway device shown in fig. 2.
In addition, the embodiment of the invention also provides a computer readable storage medium, which comprises a stored computer program, wherein when the computer program runs, the equipment where the computer readable storage medium is controlled to execute the control method for the data transmission of the 5G industrial gateway equipment according to any embodiment.
It will be appreciated by those skilled in the art that the schematic diagram is merely an example of a terminal device and does not constitute a limitation of the terminal device, and may include more or less components than illustrated, or may combine certain components, or different components, e.g., the terminal device may further include an input-output device, a network access device, a bus, etc.
The processor 1001 may be a central processing unit (Central Processing Unit, CPU), but may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, and the processor 1001 is a control center of the terminal device, and connects various parts of the entire terminal device using various interfaces and lines.
The memory 1002 may be used to store the computer program and/or module, and the processor 1001 implements various functions of the terminal device by running or executing the computer program and/or module stored in the memory and invoking data stored in the memory 1002. The memory 1002 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the handset, etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as a hard disk, memory, plug-in hard disk, smart Media Card (SMC), secure Digital (SD) Card, flash Card (Flash Card), at least one disk storage device, flash memory device, or other volatile solid-state storage device.
Wherein the terminal device integrated modules/units may be stored in a computer readable storage medium if implemented in the form of software functional units and sold or used as stand alone products. Based on such understanding, the present invention may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of each of the method embodiments described above. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth.
It should be noted that the above-described apparatus embodiments are merely illustrative, and the units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, in the drawings of the embodiment of the device provided by the invention, the connection relation between the modules represents that the modules have communication connection, and can be specifically implemented as one or more communication buses or signal lines. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.

Claims (10)

1. A method for controlling data transmission of a 5G industrial gateway device, comprising:
Acquiring a network message sent by external equipment, and judging an equipment interface for receiving the network message; wherein, the network message includes: one or more of a first network message or a second network message, wherein the first network message comprises an original field, and the second network message comprises the original field and a custom field; the device interface includes: the system comprises a first network interface, a second network interface and a third network interface, wherein the first network interface is used for connecting industrial control equipment, the second network interface is used for connecting a main network link between 5G industrial gateway equipment, and the third network interface is used for connecting a redundant network link between 5G industrial gateway equipment;
when the equipment interface for receiving the network message is a first network interface, the network message is the first network message, a third network message is obtained through a newly added field and a global message ID database according to the first network message, and the third network message is transmitted with the third network interface through a second network interface; the third network message comprises an original field and a custom field;
when the equipment interface for receiving the network message is a second network interface or a third network interface, the network message is a second network message, a fourth network message is obtained through a first preset field, a second preset field and a global message ID database according to the second network message, and the fourth network message is transmitted through the first network interface; wherein the fourth network message includes an original field.
2. The method for controlling data transmission of 5G industrial gateway device according to claim 1, wherein the obtaining, according to the first network message, the third network message through the newly added field and the global message ID database specifically includes:
obtaining local ID data according to basic information of the 5G industrial gateway equipment, and obtaining message counting data according to a message counter of the 5G industrial gateway equipment;
obtaining global message data according to the local ID data and the message count data, and judging the validity of the global message data through a global message ID database according to the global message data;
when the data of the global message is successfully matched with the data in the global message ID database, judging that the data is illegal, and stopping the operation of adding the field to the first network message; when the matching of the global message data and the data in the global message ID database fails, judging that the global message data is legal, recording the time for generating the global message data and the global message data into the global message ID database, and combining the global message data with a third preset field and a fourth preset field to obtain a newly added field;
adding the newly added field into the original field of the first network message according to the original field of the first network message, thereby obtaining third network message data; the custom field of the third network packet is specifically a newly added field.
3. The method for controlling data transmission of 5G industrial gateway device according to claim 2, wherein the obtaining, according to the second network message, the fourth network message through the first preset field, the second preset field and the global message ID database specifically includes:
judging the validity of the second network message according to the original field and the custom field of the second network message; wherein, the custom field includes: local ID data, message count data, a first field and a second field;
when the first field of the second network message is inconsistent with the first preset field or the second field of the second network message is inconsistent with the second preset field, judging that the first field of the second network message is illegal, and discarding the second network message;
when the first field of the second network message is consistent with the first preset field, the second field is consistent with the second preset field, and the local ID data and the message count data of the second network message exist in the global message ID database, judging that the second network message is illegal, and discarding the second network message;
when the first field of the second network message is consistent with the first preset field, the second field is consistent with the second preset field, and the local ID data and the message count data of the second network message are not in the global message ID database, judging that the second network message is legal, deleting the custom field in the second network message, and obtaining a fourth network message.
4. A control method for data transmission of a 5G industrial gateway device according to claim 3, further comprising: according to a first time threshold, cleaning the global message ID database, specifically:
judging the storage time of the global message data stored in the global message ID database;
and when the storage time of the global message data is greater than or equal to the first time threshold, deleting the global message data corresponding to the storage time greater than or equal to the first time threshold.
5. The method for controlling data transmission of a 5G industrial gateway device according to claim 1, wherein the transmitting the fourth network packet through the first network interface specifically includes: and transmitting the fourth network message to the system LAN bridge through the first network interface according to the fourth network message, so that the system LAN bridge transmits the fourth network message to the industrial control equipment through the fourth network interface according to the FDB forwarding table.
6. A control device for data transmission of a 5G industrial gateway device, comprising: the device comprises a data acquisition module, a data first processing module and a data second processing module;
the data acquisition module is used for acquiring a network message sent by the external equipment and judging an equipment interface for receiving the network message; wherein, the network message includes: one or more of a first network message or a second network message, wherein the first network message comprises an original field, and the second network message comprises the original field and a custom field; the device interface includes: the system comprises a first network interface, a second network interface and a third network interface, wherein the first network interface is used for connecting industrial control equipment, the second network interface is used for connecting a main network link between 5G industrial gateway equipment, and the third network interface is used for connecting a redundant network link between 5G industrial gateway equipment;
The data first processing module is configured to obtain a third network packet according to the first network packet through the newly added field and the global packet ID database when the device interface for receiving the network packet is the first network interface, and transmit the third network packet to the third network interface through the second network interface; the third network message comprises an original field and a custom field;
the data second processing module is configured to obtain a fourth network packet according to the second network packet through the first preset field, the second preset field and the global packet ID database when the device interface for receiving the network packet is the second network interface or the third network interface, and transmit the fourth network packet through the first network interface; wherein the fourth network message includes an original field.
7. The control device for data transmission of 5G industrial gateway equipment according to claim 6, wherein the obtaining, according to the first network message, the third network message through the newly added field and the global message ID database specifically includes:
Obtaining local ID data according to basic information of the 5G industrial gateway equipment, and obtaining message counting data according to a message counter of the 5G industrial gateway equipment;
obtaining global message data according to the local ID data and the message count data, and judging the validity of the global message data through a global message ID database according to the global message data;
when the data of the global message is successfully matched with the data in the global message ID database, judging that the data is illegal, and stopping the operation of adding the field to the first network message; when the matching of the global message data and the data in the global message ID database fails, judging that the global message data is legal, recording the time for generating the global message data and the global message data into the global message ID database, and combining the global message data with a third preset field and a fourth preset field to obtain a newly added field;
adding the newly added field into the original field of the first network message according to the original field of the first network message, thereby obtaining third network message data; the custom field of the third network packet is specifically a newly added field.
8. The control device for data transmission of a 5G industrial gateway device according to claim 7, wherein the obtaining, according to the second network packet, the fourth network packet through the first preset field, the second preset field and the global packet ID database specifically includes:
Judging the validity of the second network message according to the original field and the custom field of the second network message; wherein, the custom field includes: local ID data, message count data, a first field and a second field;
when the first field of the second network message is inconsistent with the first preset field or the second field of the second network message is inconsistent with the second preset field, judging that the first field of the second network message is illegal, and discarding the second network message;
when the first field of the second network message is consistent with the first preset field, the second field is consistent with the second preset field, and the local ID data and the message count data of the second network message exist in the global message ID database, judging that the second network message is illegal, and discarding the second network message;
when the first field of the second network message is consistent with the first preset field, the second field is consistent with the second preset field, and the local ID data and the message count data of the second network message are not in the global message ID database, judging that the second network message is legal, deleting the custom field in the second network message, and obtaining a fourth network message.
9. The control device for data transmission of 5G industrial gateway equipment according to claim 8, further comprising: the data cleaning module is used for cleaning the global message ID database according to a first time threshold, and specifically comprises the following steps: judging the storage time of the global message data stored in the global message ID database; and when the storage time of the global message data is greater than or equal to the first time threshold, deleting the global message data corresponding to the storage time greater than or equal to the first time threshold.
10. A control system for data transmission of a 5G industrial gateway device, comprising: a control device for data transmission of a plurality of 5G industrial gateway devices, a plurality of PLC devices, a plurality of DCS devices, a wired ring network switch network and a 5G special network; wherein the control means of data transmission of each of the 5G industrial gateway devices is applied to the control method of data transmission of a 5G industrial gateway device as set forth in claims 1 to 5; the control device for data transmission of each 5G industrial gateway device is respectively connected with each PLC device and each DCS device through a first network interface; the second network interface of the control device for data transmission of each 5G industrial gateway device is connected through the wired ring network switch network, and the third network interface of the control device for data transmission of each 5G industrial gateway device is connected through the 5G special network.
CN202211009840.5A 2022-08-22 2022-08-22 Control method, device and system for data transmission of 5G industrial gateway equipment Pending CN117081981A (en)

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