CN117220842A

CN117220842A - Communication method and device

Info

Publication number: CN117220842A
Application number: CN202210601695.3A
Authority: CN
Inventors: 曾正洋; 司源; 李世昆; 姚建辉
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2023-12-12
Also published as: WO2023231905A1

Abstract

A communication method and device are used for guaranteeing wireless demands of industrial systems or industrial systems. The first equipment acquires the state information of the second equipment and adjusts the transmission mode of the message according to the state information of the second equipment; the first device is an industrial system or a device in the industrial system, and the second device is a device in a wireless network; or the first equipment is equipment in a wireless network, and the second equipment is equipment in an industrial system or an industrial system; the header of the message includes one or more of the following: sender identification, receiver identification, quality of service QoS requirement of the message, priority requirement of the message or user group identification; the message content of the message does not comprise a filling packet, and the message content of the message comprises message payload related compression information of a message before the message and/or a message after the message. In this way, the certainty, reliability and transmission efficiency of message transmission under the scene of the industrial system or the industrial system and the wireless network are ensured.

Description

Communication method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communications method and apparatus.

Background

Industrial communication protocol messages generally have periodic characteristics, and a transmission network is required to simultaneously consider certainty (such as low jitter) and low delay performance of message transmission, and meanwhile, the network transmission efficiency is improved, and the cost is reduced.

There is an increasing demand for wireless deployment of industrial communication protocols to promote flexibility in production or to reduce the cost of deployment. However, when the current industrial communication protocol uses wireless technology (such as long term evolution (long term evolution, LTE) technology, fifth generation (the 5th generation,5G) technology, wireless fidelity (wireless fidelity, wiFi) and the like) for transmission, there are problems of insufficient delay reliability guarantee, low transmission efficiency, high networking cost and the like.

Disclosure of Invention

The application provides a communication method and a communication device, which are used for guaranteeing wireless requirements of an industrial system or an industrial system.

In a first aspect, the present application provides a communication method, which may be applied to a first device, a functional module in the first device, a processor or a chip in the first device, etc. Taking the application to the first device as an example, the method may include: after the first equipment acquires the state information of the second equipment, the transmission mode of the message is adjusted according to the state information of the second equipment; wherein the first device is a device in an industrial system (or an industrial system, etc.), and the second device is a device in a wireless network; alternatively, the first device is a device in the wireless network, and the second device is a device in the industrial system (or an industrial system, etc.);

When the first device is a device in the wireless network, the first device may be a terminal device in the wireless network, or may be a base station in the wireless network, or may be other devices in the wireless network except for the terminal device and the base station.

By the method, bidirectional collaborative optimization between the industrial system (or the industrial system and the like) and equipment in the wireless network can be realized in the scene of butt joint of the industrial system (or the industrial system and the like) and the wireless network, and the certainty, the reliability and the like of message transmission are ensured.

In one possible design, the header of the message may include one or more of the following: sender identification, receiver identification, quality of service (quality of service, qoS) requirements of the message, priority requirements of the message, or user group identification; the message content of the message does not comprise a filling packet, and the message content of the message can comprise message payload related compression information of a message before the message and/or a message after the message. The message transmission reliability and the transmission efficiency can be improved by simplifying the header and the content of the message. Thus, the wireless requirements of industrial systems or industrial systems can be ensured.

In one possible design, the first device may obtain the state information of the second device by: the first device may obtain the state information of the second device through a control plane interface or a control plane network element of the wireless network. So that key information interaction between the industrial system (or industry system, etc.) and the wireless network can be realized.

In one possible design, the first device may also obtain the status information of the second device by: the first device may obtain the status information of the second device through a management plane network element of the wireless network. So that key information interaction between the industrial system (or industry system, etc.) and the wireless network can be realized.

In one possible design, a connection is established between a management plane element in the wireless network and a device in the industrial system (or an industrial system, etc.), or the management plane element in the wireless network communicates with the device in the industrial system (or the industrial system, etc.) through an application program interface (application programming interface, API). On the basis, the first equipment can successfully acquire the state information of the second equipment through the management surface network element of the wireless network.

In one possible design, the first device may also obtain the status information of the second device by: the first device obtains the state information of the second device through a user plane network element of the wireless network. So that key information interaction between the industrial system (or industry system, etc.) and the wireless network can be realized.

In one possible design, before the first device obtains the state information of the second device, the first device and the second device may negotiate a transmission manner of the state information, and then the first device may accurately obtain the state information of the second device through the negotiated transmission manner.

In one possible design, when the first device is a device in the industrial system (or an industrial system, etc.) and the second device is a device in the wireless network, the first device obtains, through a user plane network element of the wireless network, state information of the second device, and may include the following method: the first equipment can acquire the state information of the second equipment through the message associated information of the user plane network element; the second method comprises the step that the first equipment can acquire the state information of the second equipment in shared information, wherein the shared information is configured in equipment connected with the industrial system in the wireless network or the shared information is configured in equipment connected with the wireless network in the industrial system; the third method is that the first device can acquire the state information reported by the second device; in a fourth method, the first device may send query information to the second device, and receive query response information from the second device, where the query response information includes the state information. Through the methods, the first equipment can acquire the state information of the second equipment flexibly and accurately.

In one possible design, the state information may be included in the packet associated information in any of the following ways: industrial ethernet message header, industrial ethernet message data portion, industrial ethernet message trailer, internet protocol (Internet protocol, IP) message header, IP message data portion, or IP message trailer. Thus, the state information can be flexibly transmitted through the message associated information.

In one possible design, when the first device is a device in the industrial system (or an industrial system, etc.), the second device is a device in the wireless network, the status information may include one or more of: status information of the wireless network, status information of the wireless terminal, capability information; wherein the status information of the wireless network may include one or more of: load, interference, fading, network packet loss rate, wireless air interface time accuracy, time synchronization accuracy, transmission delay, reliability of transmission delay, transmission delay jitter, reliability of transmission delay jitter, access frequency point configuration or wireless cell bandwidth configuration; the status information of the wireless terminal may include one or more of: the wireless terminal comprises a load, interference, fading, packet loss rate, channel quality, CPU utilization rate, equipment temperature, transmission delay, reliability of the transmission delay, transmission delay jitter, reliability of the transmission delay jitter, access frequency point configuration or wireless cell bandwidth configuration; the capability information may include one or more of the following: the wireless terminal comprises an air interface sending rule of the wireless network, scheduling capability limitation of the wireless network, capability information of the wireless terminal or subscription information of the wireless terminal. The equipment in the industrial system (or the industrial system and the like) adjusts the transmission mode of the message based on the information, so that the accurate and effective utilization of network resources can be realized.

In one possible design, when the first device is a device in the industrial system (or an industrial system, etc.) and the second device is a device in the wireless network, the method may be that the first device adjusts a transmission mode of a message according to state information of the second device: the first device may adjust a transmission manner of the message according to the state information of the second device, where the transmission manner includes one or more of the following: the message sending parameter, the message feedback mechanism, the message redundant sending mechanism or the message retransmission mechanism. Thus, the transmission mode of the message can be optimized from multiple aspects.

In one possible design, the transmission parameters of the message may include one or more of the following: a transmission period parameter, a transmission Time starting point parameter, a Watchdog (watch) parameter, a Time to live (survivin Time) parameter, and a Time length parameter for link reestablishment; the feedback mechanism of the message may include whether to feedback the receiving state; the redundant sending mechanism of the message can comprise the sending number of the message and/or the sending interval of the message; the retransmission mechanism of the message may include whether to retransmit and/or retransmission and merging modes.

In one possible design, when the first device is a device in the industrial system (or an industrial system, etc.) and the second device is a device in the wireless network, the method may be that the first device adjusts a transmission mode of a message according to state information of the second device: the first device adjusts the transmission mode of the message according to the service requirement and/or the requirement of the industrial system and the capability information in the state information. The transmission mode of the message after adjustment can meet the service requirement and/or the requirement of the industrial system (or the industrial system and the like) and the capability information of the second equipment.

In one possible design, the first device adjusts the transmission mode of the message according to the service requirement and/or the requirement of the industrial system (or industrial system, etc.) and the capability information in the status information, and the method may be: the first device determines whether the service requirement and/or the requirement of the industrial system (or industrial system, etc.) exceeds the capability information; if the first device determines that the service requirement and/or the requirement of the industrial system (or the industrial system and the like) exceeds the capability information, the first device judges whether the transmission mode of the message meeting the capability information can be adjusted. Therefore, the adjusted transmission mode of the message can meet the capability information of the second equipment, so that the success rate of message transmission is ensured.

In one possible design, when the first device determines that the transmission mode of the message meeting the capability information cannot be adjusted, the first device may send notification information to the second device, where the notification information is used to indicate that the capacity of the wireless network is expanded; alternatively, the first device may also determine to reduce the business requirements and/or the requirements of the industrial system (or industry system, etc.). Thus, the reliability of transmission can be ensured in the subsequent message transmission.

In one possible design, the business requirements may include one or more of the following: qoS requirement of service, networking node number of service or networking topological relation of service; the requirements of the industrial system (or industry system, etc.) may include one or more of the following: qoS requirements of the industrial system (or industry system, etc.), the number of networking nodes of the industrial system (or industry system, etc.), or the networking topology of the industrial system (or industry system, etc.).

In one possible design, when the first device is a device in the wireless network and the second device is a device in the industrial system (or industrial system, etc.), the status information may include static configuration information and/or dynamic information; wherein the static configuration information may include one or more of: sending period, watchdog parameter configuration, survival time parameter configuration, message sending starting point or topological relation among devices in the industrial system (or industrial system, etc.); the dynamic information may include one or more of the following: real-time packet loss information, real-time watchdog statistics timeout count information, survival time state information, message arrival time, clock precision, transmission delay information, transmission delay reliability information, transmission delay jitter reliability information, topology relation change information among devices in the industrial system (or industrial system and the like) or information whether the second device works effectively. Devices in the wireless network can accurately adjust the transmission mode of the message based on the information.

In one possible design, when the first device is a device in the wireless network and the second device is a device in the industrial system (or an industrial system, etc.), the method may be that the first device adjusts a transmission mode of a message according to state information of the second device: the first device adjusts the transmission mode of the message according to the state information of the second device, wherein the transmission mode comprises one or more of the following steps: the network resource allocation of the message, the redundant sending mechanism of the message or the retransmission mechanism of the message. Thus, the transmission mode of the message can be optimized from multiple aspects.

In one possible design, the network resource configuration of the message may include one or more of the following: pre-scheduling resources, grant free (grant free) scheduling resources, semi-persistent scheduling (semi persistent scheduling, SPS) resources, or base station low latency related configuration in the wireless network; the redundant sending mechanism of the message may include one or more of the following: modulation and coding scheme (modulation and coding scheme, MCS) order, packet data convergence protocol (packet data convergence protocol, PDCP) repetition, spatial transmit diversity, multiple redundant transmission paths, slot aggregation, or multiple transmission time interval (transmission time interval, TTI) bundling repetition transmissions; the retransmission mechanism of the message may include one or more of the following: the protocol stack layer of retransmission, the retransmission times, the retransmission time, the feedback time length of retransmission or the retransmission and merging mode.

In one possible design, the first device and the second device may negotiate different message transmission times; the sending time of the different messages is the same, or the sending time of the different messages is different by a first time. Therefore, the sending time of the different messages can be negotiated to be the same according to actual demands, and the messages are sent in a multicast mode; or negotiating the phase difference of the sending moments of the different messages by a first time according to the actual demand so as to reduce the number of concurrent users of the network.

In one possible design, the first device may perform time synchronization with the second device. Therefore, the message transmission can be carried out on the basis of time synchronization, and the message transmission reliability and transmission efficiency are improved.

In one possible design, the first device may perform time synchronization with the second device by: the first device determining to synchronize to global time or world time with the second device; alternatively, the first device uses the same time synchronization scheme or the same clock server as the second device.

In one possible design, the first device determines a protocol type of the message; further, when the protocol type is a first protocol type, the first device transmits the message based on the first protocol type, wherein the first protocol type is a protocol type maintained by both the first device and the second device; when the protocol type is an open platform communication unified architecture (open platform communications unified architecture, OPC-UA) type, the first device transmits the message based on the OPC-UA type, or the first device translates or converts the OPC-UA type into the first protocol type and transmits the message based on the first protocol type; and when the protocol type is a second protocol type, the first device translates or converts the second protocol type into the first protocol type, and transmits the message based on the first protocol type, wherein the second protocol type is a protocol type other than the first protocol type and the OPC-UA type. Thus, the semantic intercommunication among messages of different protocols can be supported, and the successful over-transmission of the messages is ensured.

In one possible design, the first device may determine the message according to an inter-message redundancy coding manner and/or a message combination coding manner between multiple users; the inter-message redundancy coding mode may refer to adding part or all of information of the first N messages in the messages, where N is an integer greater than or equal to 1; the message joint coding mode between multiple users can refer to adding redundant information between the messages of the multiple users. Therefore, the message can be simplified, the transmission data quantity is reduced, the transmission reliability is improved, and the transmission efficiency is improved.

In one possible design, when the first device is a device in the wireless network and the second device is a device in the industrial system (or an industrial system, etc.), the first device may adjust an inter-packet redundancy coding mode and/or an inter-packet association coding mode according to network status information. Thus, the message can be processed in an accurate coding mode.

In one possible design, the first device adjusts, according to the network state information, a redundant coding manner between messages and/or a message joint coding manner between multiple users, where the method may be: when the first device determines that the network state is unchanged according to the network state information, the first device keeps the inter-message redundancy coding mode and/or the inter-multi-user message combination coding mode unchanged; when the first device determines that the network state changes according to the network state information, the first device changes the inter-message redundancy coding mode and/or the inter-multi-user message combination coding mode. Thus, the accurate coding mode can be determined, and the message can be accurately processed.

In one possible design, the first device transmits the message according to a first protocol; the first protocol supports PDCP functions and IP or ethernet protocol functions. In this way, the transmission protocol stacks in the scene of the industrial system (or industrial system) and the wireless network are fused, so that the transmission efficiency of the message is improved.

In one possible design, when the first device is a device in the wireless network, the first device may further determine a scheduling manner according to a service feature to accurately schedule the packet transmission.

In one possible design, when the first device is a device in the wireless network and the first device is a terminal device, the first device may establish a direct link and/or a relay link with other terminal devices in the wireless network; and the first device can select one or more links from the established links to transmit the message according to the message transmission requirement. Thus, the transmission reliability of the message can be improved.

In one possible design, the first device may store a list of terminal devices, the terminal devices in the list of terminal devices being capable of establishing a link with the first device. Therefore, the first equipment can accurately select the transmission path, and the transmission reliability of the message is ensured.

In one possible design, when the first device is a device in the wireless network and the first device is a terminal device, the first device may receive timing information from a base station in the wireless network and perform time synchronization according to the timing information. Therefore, the message transmission can be carried out on the basis of time synchronization, and the transmission reliability of the message is ensured.

In one possible design, when the first device is a device in the wireless network, the first device may determine a plurality of network communication configurations, where the network communication configurations include a combination of frequency bands and a combination of communication schemes; the first device may select one of the plurality of network configurations to be currently used. Thus, the first equipment can flexibly select an access mode so as to meet the requirements of time delay, reliability transmission and the like of an industrial system (or an industrial system) in wireless network transmission.

In one possible design, the first device may determine a network state change value; further, when the network state change value is greater than or equal to a preset value, the first device changes the network communication configuration used; and when the network state change value is smaller than the preset value, the first equipment keeps the used network communication configuration unchanged. Thus, the first equipment can flexibly adjust the network communication configuration according to actual conditions so as to meet the requirements of time delay, reliability transmission and the like of an industrial system (or an industrial system) in wireless network transmission.

In one possible design, the first device sends the packet, where the packet includes first timestamp information and second timestamp information, where the first timestamp information is time information for sending the packet, and the second timestamp information is completion time information of the packet. Thus, deterministic transmission of messages can be achieved based on the time stamp information.

In a second aspect, the present application provides a communication method, which may include: the method comprises the steps that a second device provides state information of the second device for a first device, and the first device acquires the state information of the second device and adjusts a transmission mode of a message according to the state information of the second device; wherein the first device is a device in an industrial system (or an industrial system, etc.), and the second device is a device in a wireless network; alternatively, the first device is a device in the wireless network, and the second device is a device in the industrial system (or an industrial system, etc.);

the device in the wireless network may be a terminal device in the wireless network, or may be a base station in the wireless network, or may be other devices in the wireless network except for the terminal device and the base station.

In one possible design, the header of the message may include one or more of the following: sender identification, receiver identification, quality of service (quality of service, qoS) requirements of the message, priority requirements of the message, or user group identification; the message content of the message does not comprise a filling packet, and the message content of the message can comprise message payload related compression information of a message before the message and/or a message after the message. The message transmission reliability and the transmission efficiency can also be improved by simplifying the header and the content of the message. Thus, the wireless requirements of industrial systems or industrial systems can be ensured.

In one possible design, the second device may provide status information of the second device to the first device through a control plane interface of the wireless network; the first device may obtain the state information of the second device through a control plane interface or a control plane network element of the wireless network. So that key information interaction between the industrial system (or industry system, etc.) and the wireless network can be realized.

In one possible design, the second device may provide status information of the second device to the first device through a management plane network element of the wireless network; the first device may obtain the status information of the second device through a management plane network element of the wireless network. So that key information interaction between the industrial system (or industry system, etc.) and the wireless network can be realized.

In one possible design, the second device may provide status information of the second device to the first device through a user plane network element of the wireless network; the first device obtains the state information of the second device through a user plane network element of the wireless network. So that key information interaction between the industrial system (or industry system, etc.) and the wireless network can be realized.

In one possible design, the second device provides the state information to the first device, and before the first device obtains the state information of the second device, the first device and the second device may negotiate a transmission mode of the state information, and then the first device may accurately obtain the state information of the second device through the negotiated transmission mode.

In one possible design, when the first device is a device in the industrial system (or an industrial system, etc.) and the second device is a device in the wireless network, the second device provides, to the first device through a user plane network element of the wireless network, state information of the second device, where the first device obtains, through the user plane network element of the wireless network, state information of the second device, and may include the following method: the method comprises the steps that firstly, the second equipment can provide state information of the second equipment for the first equipment through message following information of the user plane network element, and the first equipment can acquire the state information of the second equipment through the message following information of the user plane network element; the second method includes that the second device can write state information into shared information, and the first device can acquire the state information of the second device in the shared information, wherein the shared information is configured in a device connected with the industrial system in the wireless network, or the shared information is configured in a device connected with the wireless network in the industrial system; thirdly, the second device reports the state information to the first device, and the first device can acquire the state information reported by the second device; in a fourth method, the first device may send query information to the second device, where the second device receives the query information sent by the first device and sends query response information to the first device, and the first device receives query response information from the second device, where the query response information includes the state information. Through the methods, the first equipment can acquire the state information of the second equipment flexibly and accurately.

In one possible design, when the first device determines that the transmission mode of the message meeting the capability information cannot be adjusted, the first device may send notification information to the second device, where the second device receives notification information from the first device, where the notification information is used to instruct expansion of the wireless network; alternatively, the first device may also determine to reduce the business requirements and/or the requirements of the industrial system (or industry system, etc.). Thus, the reliability of transmission can be ensured in the subsequent message transmission.

In one possible design, the first device may perform time synchronization with the second device, which may perform time synchronization with the first device. Therefore, the message transmission can be carried out on the basis of time synchronization, and the message transmission reliability and transmission efficiency are improved.

In one possible design, the first device determines a protocol type of the message; further, when the protocol type is a first protocol type, the first device transmits the message based on the first protocol type, wherein the first protocol type is a protocol type maintained by both the first device and the second device; when the protocol type is an OPC-UA type, the first device transmits the message based on the OPC-UA type, or the first device translates or converts the OPC-UA type into the first protocol type and transmits the message based on the first protocol type; and when the protocol type is a second protocol type, the first device translates or converts the second protocol type into the first protocol type, and transmits the message based on the first protocol type, wherein the second protocol type is a protocol type other than the first protocol type and the OPC-UA type. Thus, the semantic intercommunication among messages of different protocols can be supported, and the successful over-transmission of the messages is ensured.

In a third aspect, the present application also provides a communication apparatus, which may be a first device, a processor, a chip or a functional module in the first device, or the like, having a function of implementing the first device in the above-mentioned first aspect or each possible design example of the first aspect, or a function of the first device in the above-mentioned second aspect or each possible design example of the second aspect. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the functions described above.

In one possible design, the structure of the communication apparatus includes a transceiver unit and a processing unit, where these units may perform the corresponding functions of the first device in the foregoing first aspect or each possible design example of the first aspect, or the corresponding functions of the first device in the foregoing second aspect or each possible design example of the second aspect, specifically referring to the detailed description in the method examples, which are not described herein in detail.

In one possible design, the structure of the communication apparatus includes a communication interface and a processor, and optionally further includes a memory, where the communication interface is used to receive and send a message or data, and is used to perform communication interaction with other devices in the communication system, and the processor is configured to support the communication apparatus to perform a corresponding function of the first device in the foregoing first aspect or each possible design example of the first aspect, or a corresponding function of the first device in the foregoing second aspect or each possible design example of the second aspect. The memory is coupled to the processor that holds the program instructions and data necessary for the communication device.

In a fourth aspect, the present application further provides a communication apparatus, which may be a second device, a processor, a chip or a functional module in the second device, and the communication apparatus has a function of implementing the second device in the second aspect or each possible design example of the second aspect. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the functions described above.

In one possible design, the structure of the communication apparatus includes a transceiver unit and a processing unit, where these units may perform the corresponding functions of the second device in the second aspect or each possible design example of the second aspect, and detailed descriptions in method examples are specifically referred to and are not described herein.

In one possible design, the structure of the communication apparatus includes a communication interface and a processor, and optionally further includes a memory, where the communication interface is used to receive and send messages or data, and is used to perform communication interaction with other devices in the communication system, and the processor is configured to support the communication apparatus to perform the corresponding function of the second device in the foregoing second aspect or each possible design example of the second aspect. The memory is coupled to the processor that holds the program instructions and data necessary for the communication device.

In a fifth aspect, embodiments of the present application provide a communication system that may include the first device and the second device mentioned above, and the like.

In a sixth aspect, embodiments of the present application provide a computer readable storage medium storing program instructions that when run on a computer cause the computer to perform the method described in the first aspect of the embodiments of the present application and any one of the possible designs thereof, or in the second aspect of the embodiments of the present application and any one of the possible designs thereof. By way of example, computer-readable storage media can be any available media that can be accessed by a computer. Taking this as an example but not limited to: the computer readable medium may include non-transitory computer readable media, random-access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

In a seventh aspect, embodiments of the present application provide a computer program product comprising computer program code or instructions which, when run on a computer, cause the method described in the first aspect or any one of the possible designs of the second aspect or the second aspect to be performed.

In an eighth aspect, the present application also provides a chip comprising a processor coupled to a memory for reading and executing program instructions stored in the memory to cause the chip to implement the method of the first aspect or any one of the possible designs of the second aspect.

The technical effects of each of the third to eighth aspects and the technical effects that may be achieved by each of the aspects are referred to the above description of each of the possible aspects of the first aspect or the first aspect, or the technical effects that may be achieved by each of the possible aspects of the second aspect or the second aspect, and the detailed description is not repeated here.

Drawings

Fig. 1 is a schematic diagram of a communication system according to the present application;

fig. 2 is a schematic diagram of an architecture of yet another communication system provided by the present application;

fig. 3 is a schematic diagram of an architecture of yet another communication system provided by the present application;

FIG. 4 is a schematic diagram of defining a frame format and a joint coding mechanism of a message according to the present application;

FIG. 5 is a schematic diagram of a message according to the present application;

FIG. 6 is a schematic diagram of an inter-packet depth compression effect according to the present application;

FIG. 7 is a schematic diagram of an inter-packet redundancy coding scheme according to the present application;

FIG. 8 is a schematic diagram of a message association coding scheme between multiple users according to the present application;

fig. 9 is a schematic diagram of a compression mode, an inter-packet redundancy coding mode and an inter-multi-user packet joint coding mode of an apparatus adjustment packet in a wireless network according to the present application;

fig. 10 is a schematic diagram of the mutual conversion between a wireless converged polar figure packet and a wired network transmission packet provided by the present application;

FIG. 11 is a schematic flow chart of a networking and protocol function definition provided by the present application;

fig. 12 is a schematic diagram of a fat AP architecture of a WLAN according to the present application;

fig. 13 is a schematic diagram of a thin AP architecture of a WLAN according to the present application;

fig. 14 is a schematic diagram of a network architecture for peer-to-peer communication according to the present application;

FIG. 15 is a diagram of a convergence protocol layer according to the present application;

FIG. 16 is a schematic diagram of a collaborative optimization of an industrial system and a wireless network provided by the present application;

fig. 17 is a schematic diagram of a 3GPP network management system according to the present application transferring status information of a wireless network to a configuration subsystem of an industrial system;

fig. 18 is a schematic diagram of interaction information between a 3GPP user plane network element and a device in an industrial system according to the present application;

Fig. 19 is a schematic diagram of a time synchronization manner between a 5G network and a TSN system defined according to the 3GPP standard;

FIG. 20 is a schematic diagram of a point-to-point time synchronization according to the present application;

fig. 21a is a schematic diagram of a transmission mode of an adjustment message of a device in an industrial system according to the present application based on status information fed back by the device in a wireless network;

fig. 21b is a schematic diagram of a transmission mode of an adjustment message of a device in a wireless network based on status information fed back by the device in an industrial system according to the present application;

fig. 22 is a schematic diagram of alignment of sending time of different messages according to the present application;

fig. 23 is a schematic diagram of a transmission time of different messages provided in the present application with uniform staggering;

fig. 24 is a schematic diagram of a device in an industrial system according to the present application performing service arrangement according to acquired status information of a device in a wireless network;

fig. 25 is a schematic diagram of transmitting continuous packet loss information through a type of service (TOS) field or an option field of an IP packet according to the present application;

fig. 26 is a schematic diagram of transmitting continuous packet loss information through fields such as s.mac address or data of a MAC packet or an ethernet packet according to the present application;

FIG. 27 is a schematic diagram of a shared area read/access provided by the present application;

FIG. 28 is a schematic diagram of a shared area write provided by the present application;

FIG. 29 is a schematic diagram of a device in a wireless network actively sending status information to a device in an industrial system according to the present application;

FIG. 30 is a schematic diagram of a passive query-response approach provided by the present application;

fig. 31 is a schematic flow chart of cooperation and fusion integration of a plurality of terminal devices in a wireless network according to the present application;

fig. 32 is a schematic diagram of multipath among a plurality of terminal devices according to the present application;

fig. 33 is a schematic diagram of MESH networking between a plurality of terminal devices and between a terminal device and a wireless base station according to the present application;

fig. 34 is a schematic diagram of performing whole network time synchronization between a plurality of terminal devices and a base station according to the present application;

fig. 35 is a schematic diagram of establishing a group relationship between four terminal devices according to the present application;

fig. 36 is a schematic diagram of implementing multi-access technology fusion and elastic air interface according to the present application;

fig. 37 is a schematic diagram of a device adjustment air interface transmission mechanism combination in a wireless network according to the present application;

FIG. 38 is a schematic diagram of a device adjustment air interface transmission mechanism combination in an industrial system according to the present application;

FIG. 39 is a schematic diagram of a deterministic process of E2E provided by the present application;

FIG. 40 is a schematic diagram of E2E time synchronization provided by the present application;

FIG. 41 is a schematic diagram of message transmission based on protocol interworking provided by the present application;

FIG. 42 is a schematic diagram of a protocol stack according to the present application;

FIG. 43 is a flow chart of a communication method provided by the present application;

fig. 44 is a schematic structural diagram of a communication device according to the present application;

fig. 45 is a block diagram of a communication device according to the present application.

Detailed Description

The present application will be described in further detail with reference to the accompanying drawings.

The embodiment of the application provides a communication method and a communication device, which are used for guaranteeing the wireless demands of an industrial system or an industrial system. The method and the device of the present application are based on the same technical concept, and because the principles of solving the problems by the method and the device are similar, the implementation of the device and the method can be referred to each other, and the repetition is not repeated.

In the description of the present application, the words "first," "second," and the like are used solely for the purpose of distinguishing between descriptions and not necessarily for the purpose of indicating or implying a relative importance or order.

In the description of the present application, "at least one species" means one species or a plurality of species, and a plurality of species means two species or more than two species. "at least one of the following" or similar expressions thereof, means any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c may represent: a, b, c, a and b, a and c, b and c, or a and b and c, wherein a, b, c may be single or plural.

In the description of the present application, "and/or", describing the association relationship of the association object, three relationships may exist, for example, a and/or B may represent: a alone, a and B together, and B alone, wherein A, B may be singular or plural. "/" means "OR", e.g., a/b means a or b.

In order to describe the technical solution of the embodiments of the present application more clearly, the following describes in detail the communication method and the device provided by the embodiments of the present application with reference to the accompanying drawings.

The embodiment of the application can be applied to industrial wireless or wired communication systems, industrial wireless or wired communication systems (such as wireless or wired communication systems of industrial production sites), industrial system and wireless network docking systems or industrial system (also can be called as industrial application systems) and wireless network docking systems and the like. In addition, the embodiment of the application can be applied to scenes such as power, augmented reality (augmented reality, AR), virtual Reality (VR), augmented reality (XR), internet of vehicles, vehicle-to-anything communication (V2X), and the like.

In the description of the present application, for convenience of description, only an industrial system is taken as an example, and it should be understood that description of the industrial system and the like are applicable, and will not be described one by one.

By way of example, fig. 1 illustrates the architecture of one possible communication system to which embodiments of the present application may be applied. The communication system may include at least one terminal device integrating industrial communication with wireless communication and a base station integrating industrial communication with wireless communication, and optionally, a hub control point. For example, fig. 1 exemplarily shows that the communication system may include an industrial communication and wireless communication integrated terminal device 1, an industrial communication and wireless communication integrated terminal device 2, an industrial communication and wireless communication integrated terminal device 3, an industrial communication and wireless communication integrated base station, and a network control point. The terminal devices can be interconnected, and the terminal devices can be accessed into the base station through wireless air interfaces.

In fig. 1, the terminal device and the base station are taken as an example to support both the industrial communication function and the wireless communication function, that is, the industrial communication function and the wireless communication function are disposed on one device, and in practice, the industrial function and the wireless communication function may be disposed separately and separately, for example, may be disposed as the industrial communication terminal device and the wireless communication terminal device, respectively.

It should be noted that fig. 1 is only an example of industrial communication, and it should be understood that industrial communication is equally applicable, and will not be described in detail here.

In the present application, the wireless network may be a third generation partnership project (the 3rd generation partnership project,3GPP) network, such as a long term evolution (long term evolution, LTE) communication network, a fifth generation (5th generation,5G) new wireless (NR) communication network, and the like. Alternatively, the wireless network may be another wireless network, etc., and the present application is not limited thereto.

For example, taking a wireless network as a 3GPP network as an example, the architecture of the communication system applicable to the embodiment of the present application may also include an industrial terminal device, a 3GPP base station, and a 3GPP core network, for example, as shown in fig. 2 and 3. Fig. 2 shows a single-ended wireless scenario, i.e. one industrial terminal device is connected to a 3GPP terminal device, and fig. 3 shows a double-ended wireless scenario, i.e. one 3GPP terminal device is connected to each industrial terminal device.

The industrial terminal device may also be referred to as an industrial user equipment (industrial user equipment, i-UE) or as an application device. And communicating with other i-UEs. The i-UE may be connected to a 3GPP terminal device (also referred to as a 3GPP user equipment (3GPP user equipment,3GPP UE)), for example, i-UE 1 is connected to a 3GPP UE in fig. 2, i-UE 4 is connected to a 3GPP UE, for example, i-UE 1 is connected to a 3GPP UE 1 in fig. 3, and i-UE 2 is connected to a 3GPP UE 2. Alternatively, the i-UE may interface with the 3GPP UE through an IC-1 interface, for example, the protocol types supported by the IC-1 interface may include: internet protocol (Internet protocol, IP), ethernet (ethernet), and other industrial communication scenarios. The i-UE may also be connected to a network element (e.g. a user plane network element or a control plane network element) of the 3GPP core network, e.g. the i-UE 2 in fig. 2 is connected to a network element in the 3GPP core network, and the i-UE 3 is connected to a network element in the 3GPP core network. Alternatively, the i-UE may be connected to a network element of the 3GPP core network through an N6 interface. The protocol types supported by the N6 interface may include: IP, ethernet, and other industry communication scene extension protocol types. The interface names mentioned above are only examples, and are not limiting of the present application.

In industry, i-UEs may include, but are not limited to, programmable logic controller (programmable logic controller, PLC) devices, input Output (IO) devices, and the like.

The 3GPP UE and the 3GPP base station can be connected by using a 3GPP air interface (such as Uu interface). The 3GPP UE supports the transmission of 3 GPP-defined control plane and user plane messages.

The 3GPP UE may include a handheld device, an in-vehicle device, etc. having a wireless connection function. Currently, 3GPP UEs may be: a mobile phone, a tablet, a notebook, a palm, a mobile internet device (mobile internet device, MID), a wearable device, a Virtual Reality (VR) device, an augmented reality (augmented reality, AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in autopilot, a wireless terminal in unmanned (self-driving), a wireless terminal in teleoperation (remote medical surgery), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart furniture, a wireless terminal in smart office, a wireless terminal in smart wear, a wireless terminal in smart transportation, or a wireless terminal in smart home (smart home), and the like. The embodiment of the application does not limit the specific technology and the specific equipment form adopted by the 3GPP UE.

A 3GPP base station is a device that provides a wireless access service for a 3GPP UE, and accesses the 3GPP UE to a wireless network. Currently, some examples of 3GPP base stations may be: base station (base station), transmission and reception point (transmission reception point, TRP), evolved Node B (eNB), next generation base station (gNB), radio network controller (radio network controller, RNC), node B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (e.g., home evolved NodeB, or home Node B, HNB), base Band Unit (BBU), or wireless fidelity (wireless fidelity, wifi) Access Point (AP), etc. The 3GPP base station may be a module or unit for performing part of the functions of the 3GPP base station, for example, may be a Central Unit (CU) or a Distributed Unit (DU). The CU here performs the functions of the radio resource control protocol and the packet data convergence layer protocol (packet data convergence protocol, PDCP) of the 3GPP base station, and may also perform the functions of the service data adaptation protocol (service data adaptation protocol, SDAP); the DU performs the functions of a radio link control layer and a medium access control (medium access control, MAC) layer of the 3GPP base station, and may also perform the functions of a part of physical layers or all of physical layers, and for a detailed description of each of the above protocol layers, reference may be made to related technical specifications of the 3 GPP.

Network elements in the 3GPP core network support interworking and communication with 3GPP base stations. In the 5G NR scenario, the 3GPP core network may include a user plane function network element (user plane function, UPF) in the 5G core network (5G core,5 gc), and N3 interface may be used for communication between the UPF and the 3GPP base station. The 3GPP core network provides the termination of the control plane and the user plane, provides the user subscription storage and management function, the mobility management function and the strategy control function, is used as an exit gateway of the data connection for centralized forwarding to be connected with an external data network, and is used as an anchor point of the data connection when the 3GPP UE moves.

It should be noted that fig. 2 and 3 only show an example of one-to-one communication between industrial terminal devices, and in practice, the industrial terminal devices may also communicate through a complex network such as a chain, a ring, or a star.

It should be noted that the devices shown in fig. 2 and fig. 3 are only examples, and other devices, such as a buffer device or a buffer function module, may be further included in the communication system in practice, which are not shown in the drawings.

It should be noted that, in the above description, the industrial terminal device may be replaced by a terminal device of another system such as an industrial terminal device.

As known, industrial communication protocol messages generally have periodic characteristics, and a transmission network is required to simultaneously consider certainty (such as low jitter) and low-delay performance of message transmission, so that network transmission efficiency is improved, and cost is reduced. There is an increasing demand for wireless deployment of industrial communication protocols to promote flexibility in production or to reduce the cost of deployment.

However, when the current industrial communication protocol uses wireless technology (such as long term evolution (long term evolution, LTE) technology, fifth generation (the 5th generation,5G) technology, wireless fidelity (wireless fidelity, wiFi) and the like) for transmission, the packet transmission for the docking scenario of the wireless network and the industrial system is not perfect, which may have problems of insufficient delay reliability guarantee, low transmission efficiency, high networking cost and the like.

Based on the above, the embodiment of the application perfects the aspects of message formats, networking, message transmission modes, service arrangement, communication protocols and the like of the industrial communication protocol and the wireless communication protocol. So as to ensure the reliability of the industrial system and the wireless network.

The perfection of industrial systems and wireless network interfacing is described in detail below with specific embodiments.

Example 1

In the first embodiment, a message frame format, a joint coding mechanism and the like in a scene of the industrial system and the wireless network are defined so as to realize efficient transmission of the message.

The frame format and joint coding mechanism of the message may be defined by the flow shown in fig. 4, for example. The specific method can be as follows:

step 401: the message frame format is predefined.

The converged message header of the industrial system and wireless network association, such as the converged message header shown in fig. 5, is predefined to reduce resource consumption. The fused header of the message may include one or more of the following: sender identification (e.g., sender's (identity, ID)), receiver identification (e.g., receiver's ID), quality of service (quality of service, qoS) requirements of the message, priority requirements of the message, or user group identification (e.g., user group ID), etc.

The message content of the message is predefined to not include padding (padding), i.e. padding in the wired communication scene is removed, and the front-back correlation deep compression of the message payload (payload) is considered, for example, as shown in fig. 5, so as to reduce the message content. For example, the message content of the message includes message payload related compression information of a message before the message and/or a message after the message, such as the inter-message depth compression effect schematic shown in fig. 6.

Step 402: the message joint coding mode of the industrial system and the wireless network is predefined.

The message joint coding mode can comprise an inter-message redundancy coding mode and/or an inter-multi-user message joint coding mode.

The inter-message redundancy coding mode refers to that part or all of information of the first N messages can be added in each message, and N is an integer greater than or equal to 1. Alternatively, N may be a configurable parameter, or may be obtained through adaptive adjustment of the reliability effect, which is not limited in the present application. For example, in the schematic diagram of the inter-packet redundancy coding scheme shown in fig. 7, the information of the previous packet may be added in the second packet, and the partial information of the previous packet may be added in the third packet. The inter-message redundancy coding mode is adopted to improve the reliability of network transmission. The inter-packet redundancy coding scheme can be understood as an inter-packet redundancy coding scheme between single users.

The message joint coding mode between multiple users can be that redundant information is added between the messages of the multiple users. Optionally, the messages sent by multiple users at the same time or within the same industrial communication sending period can be jointly coded, redundant information is added among the messages, air interface resource consumption can be reduced in a multicast mode, and transmission reliability can be flexibly and mutually improved among the multiple users. For example, fig. 8 shows a schematic diagram of a message joint coding scheme between multiple users.

In an exemplary process of transmitting an actual message, a device in the wireless network may adjust one or more of a compression mode of the message, an inter-message redundancy coding mode, or a message combination coding mode between multiple users in real time according to network state information.

The network status information may include loading, interference, fading, or shadowing, etc. Indexes corresponding to the network state information, such as physical resource block (physical resource block, PRB) utilization, number of users on line, signal-to-noise-and-interference ratio (signal to interference plus noise ratio, SINR), reference signal received power (reference signal received power, RSRP), channel quality indication (channel quality indication, CQI) and the like, are predefined.

A device in the wireless network sets a high threshold (high_thd) and a low threshold (low_thd) of an index of network state information of the wireless network, and may consider a certain hysteresis. Different compression modes, inter-message redundancy coding modes or multi-user message combination coding modes are set according to the high threshold and the low threshold of the index. Furthermore, the device in the wireless network can judge the change condition of the network state in real time, and adjust one or more of the compression mode of the message, the redundant coding mode among the messages or the message combination coding mode among multiple users.

As shown in fig. 9, an exemplary device in a wireless network determines whether a network state changes, and if it is determined that the network state does not change, the message compression mode, the inter-message redundancy coding mode, and the inter-multi-user message combination coding mode are kept unchanged; and if the network state is determined to be changed, changing a message compression mode, an inter-message redundancy coding mode and an inter-multi-user message combination coding mode. When the network state changes, the network state may be better or worse, and according to different conditions, the following adjustment may be performed: for example, when the network state becomes good, if the index corresponding to the network state is higher than the set high threshold value, a message compression mode, an inter-message redundancy coding mode and a multi-user message combination coding mode corresponding to the high threshold value set in advance can be adopted; for example, when the network state is poor and the index corresponding to the network state is lower than the set low threshold, the message compression mode, the inter-message redundancy coding mode and the inter-multi-user message combination coding mode corresponding to the low threshold set in advance can be adopted.

Step 403: the wireless/wired message type translator is predefined to be compatible with wired network transmissions.

For example, as shown in fig. 10, a wireless/wired message type translator is added between a wireless transmission message and a wired transmission message, so that the mutual conversion between a wireless fusion pole message and a wired network transmission message can be realized, and the success of the message transmission is ensured.

For example, the message type translator can add contents such as independent message types, padding, verification and the like as required in a wired transmission scene so as to realize wired transmission.

Based on the above, the devices in the industrial system and the devices in the wireless network can transmit the message according to the message format, the coding mode and the like defined above.

In the first embodiment, the industrial system and the wireless network jointly define the message frame format, the coding mode and the like, so that the design is simplified greatly, the adaptive selection of the coding mode is supported, and the efficient wireless transmission can be realized. Meanwhile, the first embodiment can also be compatible with the conversion of the cable transmission message. For example, the header and the content of the message are extremely simply defined and compressed, so that the transmission data volume can be reduced, and the transmission efficiency can be improved; redundant coding is carried out between the messages, so that the transmission reliability can be improved; the messages are jointly encoded, and the transmission reliability can be improved by multicast; the compression mode and the coding mode support self-adaptive selection according to the characteristics of the wireless link; and the method can also be compatible with the mutual translation of the wired transmission messages.

Example two

In the second embodiment, a networking structure of a wireless network in a scenario where an industrial system and the wireless network are docked, a simplified definition of a protocol function between the industrial system and the wireless network, and the like are defined.

Exemplary, the flow of networking and protocol function definition as shown in fig. 11 may include:

step 1101: the wireless network can dynamically select the extremely simple network architecture based on a preset strategy user or on demand when being networked.

In the present application, "extremely simple" is understood to be extremely simple, very simple, etc. For example, a very simple network architecture is a very simple network architecture.

By way of example, three network architectures may be selected:

first, a fat AP architecture that supports wireless local area network-like (wireless local area network, WLAN) is supported. For example, as shown in fig. 12, the wireless terminal apparatus 1, the wireless terminal apparatus 2, and the wireless terminal apparatus 3 support 3GPP air interface connection with the wireless base station, respectively.

The network architecture shown in fig. 12 can support a very simplified radio base station, and also can support access authentication, and the like of a radio terminal device. And, a reliable transmission mechanism for supporting a 3GPP air interface between the wireless terminal device and the wireless base station, such as hybrid automatic repeat request (hybrid automatic repeat request, HARQ) retransmission, modulation and coding scheme (modulation and coding scheme, MCS) selection, and the like.

Second, a thin AP architecture that supports WLAN-like. For example, as shown in fig. 13, the radio terminal device 1 is connected to the radio terminal device 2 through the radio base station 1, the center control point, and the radio base station 2.

The network architecture shown in fig. 13 can support networking between a wireless base station and a central control point, and support wireless terminal equipment to access across the wireless base station. The central control point can finish access authentication, authentication and the like of the wireless terminal equipment. The air interface between the wireless terminal device and the wireless base station supports a reliable transmission mechanism of the 3GPP air interface, such as HARQ retransmission, MCS selection, etc.

Third, a network architecture that supports point-to-point communications. For example, the network configuration shown in fig. 14, the wireless terminal device 1 and the wireless terminal device 2 support point-to-point communication, and the wireless terminal device 2 support point-to-point communication.

The network architecture shown in fig. 14 may support point-to-point establishment of communication links between wireless terminal devices and encryption of communication links between wireless terminal devices, and the air interface supports a reliable transmission mechanism of the 3GPP air interface, such as HARQ retransmission, MCS selection, and the like.

Step 1102: a simplified fusion definition of the predefined protocol layers and protocol functions.

For example, as shown in fig. 15, a convergence protocol layer is defined with respect to an original protocol layer, which can support a function of a packet number convergence protocol (packet data convergence protocol, PDCP) and a function of an IP or ethernet protocol.

By defining the fusion protocol layer, namely fusing and cutting part of the protocol layers, the processing function can be greatly simplified, so that the safety encryption, the integrity protection, the sequencing, the deduplication, the application level retransmission and the like of the network are realized by the application (industrial system) or realized by the cooperation of the industrial system and the wireless network.

Step 1103: devices in the wireless network can perform greatly simplified processing according to the service characteristics, and can be understood as determining a scheduling mode according to the service characteristics.

For example, devices in the wireless network may optimize adjustment according to the periodicity of the traffic, deterministic mechanism, reduce complexity of dynamic scheduling, such as uplink grant free (grant free) scheduling, downlink semi-persistent scheduling (semi persistent scheduling, SPS), etc.

The second embodiment perfects the docking scenario of the wireless network and the industrial system aiming at three aspects of networking architecture, protocol layer definition and simplification of the processing procedure. The wireless network can select a very simple network architecture according to the need, the protocol layers and the processing functions of the industrial system and the wireless network are very simply defined, and very simple processing is carried out according to service characteristics, so that the efficient transmission of the message can be realized aiming at the industrial communication protocol transmission, the application experience is improved, and the resource consumption of the wireless network can be reduced.

Example III

The third embodiment is to explain the bidirectional collaborative optimization of the industrial system and the wireless network in the docking scenario of the industrial system and the wireless network.

For example, a schematic diagram of co-optimization of an industrial system and a wireless network may be shown in fig. 16, and the specific process may include:

step 1601: devices in the industrial system and devices in the wireless network interact with each other's status information.

An interaction interface between the wireless network and the industrial system may be predefined to facilitate interaction of status information (e.g., key information such as air interface transmission rules of the wireless network and/or capability restriction information of the wireless network) by devices in the wireless network and devices in the industrial system.

In an alternative embodiment, the device in the industrial system and the device in the wireless network may interact with each other's status information via a control plane interface or a control plane network element.

For example, in the architecture of a 3GPP network interfacing with a time sensitive network (time-sensitive networking, TSN) network, a control plane node application function (application function, AF) node external to the 3GPP may communicate state information with a network opening function (network exposure function, NEF) network element or a policy control function (policy control function, PCF) network element in the 3GPP network.

For another example, the control plane interface between PCF or NEF and AF may also be multiplexed to transmit status information of the wireless network to the industrial system.

For another example, the interaction of the state information may be implemented by adding a network element function or adding an interface.

In an alternative embodiment, the device in the industrial system and the device in the wireless network may interact with each other's status information through a management plane network element of the wireless network.

Because the 3GPP network management system (such as a network management station system (network management system, NMS) or an enhanced management system (enhanced management system, EMS) can generally acquire the air interface transmission rule of the wireless network, the capacity limit information of the wireless network and the like, the information can be transmitted to an industrial system (a configuration subsystem or a program) through the management surface of the wireless network; the 3GPP network management system needs to communicate the information with the industrial control system by establishing connection or opening an application program interface (application programming interface, API) and the like. For example, fig. 17 shows a schematic diagram of a 3GPP network management system transferring state information of a wireless network to a configuration subsystem of an industrial system, a connection is established between the 3GPP network management system and the configuration subsystem of the industrial system, and then the 3GPP network management system sends state information of the wireless network to the configuration subsystem of the industrial system.

Alternatively, the 3GPP network management system may provide the status information of the wireless network to a configuration subsystem or program of the industrial system in an offline manner.

In an alternative embodiment, the device in the industrial system and the device in the wireless network may interact with each other's status information through a user plane network element.

For example, taking an example that a device in a wireless network provides status information to a device in an industrial system, the status information of the wireless network can notify the industrial system through network elements such as 3GPP UE, 3GPP UPF and the like in a mode of user plane message following or independent messaging or shared reading and writing. The wireless network and the industrial system are required to negotiate the format of the notification, i.e. the transmission mode of the state information, such as message header, optional field extension, independent message transmission, etc. As shown in fig. 18, the 3GPP user plane function network element and the equipment of the industrial system pre-define a user plane message transmission format, then the 3GPP user plane network element modifies the specified user plane message, carries the state information of the wireless network, and sends the message carrying the state information of the wireless network to the equipment of the industrial system, and finally the equipment of the industrial system identifies the specified user plane message, thereby obtaining the state information of the wireless network.

Alternatively, the user plane network element may include, but is not limited to, a base station, a core network user plane network element, a wireless access terminal device, and the like.

Step 1602: devices in the wireless network and devices in the industrial system are time synchronized.

Wherein step 1602 is an optional step.

By way of example, the time synchronization may be two types:

the first mode, the devices in the industrial system and the devices in the wireless network may each be synchronized to global time or world time.

For example, as shown in fig. 19, in a time synchronization manner of the 5G network and the TSN system defined by the 3GPP standard, each of the devices in the wireless network and the industrial system is synchronized with global time or universal time, and the synchronization method may include a global positioning system (global position system, GPS), a beidou or standard protocol IEEE 1588V2, and the like.

Optionally, the device in the wireless network may not perform the modification and correction operation of the timestamp by the packet ingress and egress defined by 3GPP, so as to simplify the synchronization scheme.

The second mode, the devices in the industrial system and the devices in the wireless network may employ the same time synchronization mode or the same clock server (also referred to as the same time source).

The second mode can also be understood as point-to-point time synchronization of devices in the wireless network and devices in the industrial system. For example, point-to-point time synchronization between the wireless network and the industrial system may be performed by a node directly connected to the industrial system, such as a 3GPP UE or a 3GPP core network. Both parties need only follow the same time synchronization protocol (e.g., IEEE 1588V2 protocol). Alternatively, the raw clock may be from a wireless network, or from an industrial system.

As shown in fig. 20, a device in the wireless network (e.g., a 3GPP network element) performs a point-to-point time synchronization procedure with a device in the industrial system, and then the device in the wireless network provides a start position of a wireless frame to the device in the industrial system.

Step 1603: devices in an industrial system are bi-directionally co-optimized with devices in a wireless network.

In an alternative implementation manner, the device in the industrial system and the device in the wireless network adjust the transmission mode of the message based on the state information of the other party, so as to realize the fine utilization of network resources.

In a first example, after the device in the wireless network feeds back the status information to the device in the industrial system, the device in the industrial system adjusts the transmission manner of the message based on the status information fed back by the device in the wireless network, for example, as shown in fig. 21 a.

Optionally, the status information fed back by the device in the wireless network may include one or more of the following: status information of the wireless network, status information of the wireless terminal, capability information; wherein the status information of the wireless network may include one or more of: load, interference, fading, network packet loss rate, wireless air interface time accuracy, time synchronization accuracy, transmission delay, reliability of transmission delay, transmission delay jitter, reliability of transmission delay jitter, access frequency point configuration or wireless cell bandwidth configuration, etc. The status information of the wireless terminal may include one or more of: the wireless terminal comprises load, interference, fading, packet loss rate, channel quality, central processing unit (central processing unit, CPU) utilization, equipment temperature, transmission delay, reliability of transmission delay, transmission delay jitter, reliability of transmission delay jitter, access frequency point configuration or wireless cell bandwidth configuration and the like. The capability information may include one or more of the following: and the wireless terminal comprises an air interface transmission rule of the wireless network, a scheduling capability limit of the wireless network, capability information of the wireless terminal or subscription information of the wireless terminal and the like.

Optionally, the air interface transmission rule may include one or more of the following: air interface frame format (such as time division duplex (time division duplex, TDD)/frequency division duplex (frequency division duplexing, FDD) system, TDD uplink/downlink ratio, slot length, etc.), precise start position of a radio frame, etc.

Scheduling capability limitations of the wireless network may include, but are not limited to: high reliability low latency communication (ultra reliable and low latency communications, URLLC) scheduling capability limitations, low latency performance, low latency reliability performance, latency jitter reliability performance, concurrent user number specification, and the like.

Optionally, the TDD/FDD system, TDD uplink/downlink ratio, slot length, and URLLC scheduling capability limitation, capability limitation of the wireless terminal, or subscription information may be transferred to the industrial system independently of time synchronization. The exact start position of the radio frame can be transferred to the industrial system in a time synchronized manner.

Further, after the device of the industrial system acquires the status information fed back by the device in the wireless network, the transmission mode of one or more of the following messages can be adjusted according to the status information: the message sending parameter, the message feedback mechanism, the message redundant sending mechanism or the message retransmission mechanism.

Optionally, the sending parameters of the message may include one or more of the following: a transmission period parameter, a transmission Time start parameter, a Watchdog (watch) parameter, a Time to live (survivin Time) parameter, a Time length for link reestablishment parameter, and the like. The feedback mechanism of the message may include whether to feedback the receiving state, etc. The redundant sending mechanism of the message may include the sending number of the message and/or the sending interval of the message. The retransmission mechanism of the message may include whether to retransmit and/or retransmit and merge modes.

Among them, a watchdog is a device (typically a timer or a driver) that can be used to monitor whether a continuously running system is normal, functioning, etc.

In a second example, after the device in the industrial system feeds back the status information to the device in the wireless network, the device in the wireless network adjusts the transmission manner of the message based on the status information fed back by the device in the industrial system, for example, as shown in fig. 21 b.

Optionally, the status information fed back by the devices in the industrial system may include static configuration information and/or dynamic information.

For example, the static configuration information may include one or more of the following: sending period, watchdog parameter configuration, life time parameter configuration, message sending starting point or topological relation among devices in the industrial system.

The dynamic information may include one or more of the following: real-time packet loss information, real-time watchdog statistics timeout count information, survival time state information, message arrival time, clock precision, transmission delay information, transmission delay reliability information, transmission delay jitter reliability information, topology relation change information among devices in the industrial system or information whether the devices in the industrial system work effectively.

Further, after the device of the wireless network acquires the status information fed back by the device in the industrial system, the transmission mode of one or more of the following messages can be adjusted according to the status information: the network resource allocation of the message, the redundant sending mechanism of the message or the retransmission mechanism of the message.

Optionally, the network resource configuration of the packet may include one or more of the following: pre-scheduled resources, unlicensed scheduling resources, SPS resources, or low latency related configuration of base stations in the wireless network, etc.

The redundant sending mechanism of the message may include one or more of the following: MCS order, PDCP repetition (PDCP), spatial transmit diversity, multiple redundant transmission paths, slot aggregation (slot aggregation), or multiple transmission time intervals (transmission time interval, TTI) bundling repeat transmissions (TTI bundling), etc.

The retransmission mechanism of the message may include one or more of the following: the protocol stack layer of retransmission, the retransmission times, the retransmission time, the feedback time length of retransmission or the retransmission and merging mode, etc.

In yet another alternative embodiment, a device in the wireless network and a device in the industrial system may negotiate the transmission times of different messages.

In a possible way, the device in the wireless network and the device in the industrial system may negotiate the same sending moment of the different messages. That is, the sending moments of different messages are aligned so as to send the messages in a multicast mode. For example, fig. 22 shows a schematic diagram of alignment of transmission timings of different messages.

In yet another possible manner, the device in the wireless network and the device in the industrial system may negotiate a first time difference between the sending moments of the different messages, where the first time is a preset time. And the sending moments of different messages are staggered uniformly, so that the number of concurrent users of the network is reduced. For example, fig. 23 shows a schematic diagram in which the transmission timings of different messages are uniformly staggered.

It should be noted that the different messages may be messages of devices in the same industrial system. In an alternative embodiment, the messages of the devices in different industrial systems may also be transmitted with aligned times or with a uniform shift in the transmission times.

The scheme in the third embodiment perfects the bidirectional information interaction and the bidirectional collaborative optimization data transmission between the industrial system (application) and the wireless network. For example, a two-way information interaction interface can be opened between the industrial system and the wireless network to perform time synchronization, interact respective key information and perform transmission or scheduling adjustment according to the cooperative information. Through the bidirectional collaborative optimization of the industrial system and the wireless network, better application experience (such as time delay, reliability, time delay jitter and the like) can be obtained, and the frequency spectrum resources of the wireless network can be saved.

Example IV

In the fourth embodiment, service arrangement is performed on equipment in the industrial system and wireless network docking scene according to the acquired state information of the equipment of the wireless network. It will be appreciated that embodiment four may be one possible implementation of embodiment three.

For example, a schematic diagram of service arrangement performed by a device in an industrial system according to acquired state information of a device in a wireless network may be as shown in fig. 24, and a specific process may include:

step 2401: devices in the industrial system acquire status information of devices in the wireless network.

Alternatively, the specific content of the status information of the devices in the wireless network may be referred to the related description in the third embodiment, and will not be described in detail here.

Illustratively, a device in an industrial system may obtain status information for the device in the wireless network by any of the following:

mode 1, message associated information notification. Namely, equipment in the industrial system can acquire the state information of the equipment in the wireless network through the message associated information of the user plane network element.

The message associated information of the user plane network element may be, but is not limited to, address resolution protocol (address resolution protocol, ARP) discovery information, handshake information, address configuration information, other interactive messages between devices in the industrial system, and so on.

The channel following format of the state information in the message channel following information can be determined through negotiation between equipment in the industrial system and equipment in the wireless network.

Optionally, the status information is included in the message path information in any one of the following manners: industrial ethernet message header, industrial ethernet message data portion, industrial ethernet message trailer, internet protocol IP message header, IP message data portion, or IP message trailer, etc.

For example, the continuous packet loss information and the like in the status information may be transmitted through a type of service (TOS) field or an option field of the IP packet shown in fig. 25.

For another example, the continuous packet loss information and the like in the status information may be transmitted through a field such as a source MAC (s.mac) address or data (data) of a MAC packet or an ethernet packet shown in fig. 26.

Mode 2, shared area read/access. I.e. devices in the industrial system can obtain status information of devices in the wireless network in the shared area (shared information).

Optionally, a node or device (such as 5G UE, 5G UPF, NEF, etc.) directly connected to the industrial system opens a shared area, places the status information to be provided in advance in the shared area, and sets an access mode to enable the industrial system to share and read.

For example, as shown in fig. 27, the 3GPP network element opens the shared area, configures the rights, and then the 3GPP network element performs a secure interaction procedure with a device in the industrial system, so that the device in the industrial system can access the shared area, thereby acquiring status information of the device in the wireless network. Wherein, here, the 3GPP network element is a device connected with the industrial system in the wireless network.

Mode 3, shared area writing. That is, devices in the industrial system can acquire status information of devices in the wireless network in the shared area (shared information).

Optionally, a node or device (such as PLC, IO, etc.) directly connected to the wireless network by the industrial system opens a shared area, and the device in the wireless network writes status information to be provided in the shared area and notifies the device in the industrial system to read.

For example, as shown in fig. 28, an industrial system opens a shared area with a device directly connected to a wireless network, configures a right, and then the device performs a secure interaction procedure with a device in the wireless network, and further, the device in the wireless network may write status information of the device in the wireless network in the shared area. In this way, devices in the industrial system can read status information of devices in the wireless network in the shared area.

Mode 4, devices in the wireless network actively send status information to devices in the industrial system.

Alternatively, devices in the wireless network may send messages separately through the control plane, management plane, or user plane to inform devices in the industrial system of their own status information. Wherein the message format may be defined by negotiations between a device in the wireless network and a device in the industrial system.

Alternatively, devices in the industrial system may also require devices in the wireless network to report status information.

For example, as shown in fig. 29, a device in an industrial system and a device in a wireless network establish a connection through a connection establishment procedure, and then the device in the wireless network actively transmits status information to the device in the industrial system.

Mode 5, passive query-response mode. That is, devices in the industrial system send query information to devices in the wireless network and receive query response information from devices in the wireless network, the query response information including the status information. Such as shown in fig. 30. As shown in fig. 30, before the device in the industrial system transmits the query information to the device in the wireless network, the device in the industrial system and the device in the wireless network establish a connection through a connection establishment flow.

Alternatively, devices in the industrial system may send query information to nodes or devices (e.g., 5G UE, 5G UPF, NEF, etc.) directly connected to the wireless network, and the devices in the wireless network provide key information (i.e., status information) in response to the query information.

Step 2402: and equipment in the industrial system adjusts the transmission mode of the message according to the service requirement and/or the requirement of the industrial system and the capability information in the state information. Specifically, devices in the industrial system determine whether the business requirements and/or the requirements of the industrial system exceed the capability information.

Specifically, the capability information may be referred to the related description in the third embodiment, which is not repeated here.

The business requirements may include one or more of the following: qoS requirements of the service, the number of networking nodes of the service or the networking topological relation of the service.

The requirements of the industrial system may include one or more of the following: qoS requirements of the industrial system, the number of networking nodes of the industrial system or the networking topology relationship of the industrial system.

If the device in the industrial system determines that the service requirement and/or the requirement of the industrial system exceeds the capability information, the device in the industrial system performs step 2403, otherwise performs step 2404 or directly performs step 2406.

Step 2403: devices in the industrial system make traffic orchestration, i.e., devices in the industrial system attempt to orchestrate or adjust traffic logic, reducing the number of concurrency per TTI in the wireless network. For example, devices in the industrial system schedule or adjust message transmission sequencing, transmission cycle parameters, etc., to ensure that each TTI does not exceed the maximum capability limit of the wireless network. Further, the device in the industrial system continues to step 2405.

Step 2404: the equipment in the industrial system can also attempt to adjust or program the service logic (program or adjust the message sending sequence, sending period parameters and the like) so as to make the scheduling data quantity and data type of each TTI of the wireless network air interface more uniform, thereby being convenient for the wireless network to promote efficiency.

Step 2404 is an optional step.

Step 2405: the device in the industrial system judges whether the service arrangement is successful or not, and can also be understood that the device in the industrial system judges that the sending parameter configuration or the networking topology can be adjusted until the capability information is met, and can also be understood that the device in the industrial system can meet the maximum capability limit of each TTI of the wireless network after the service logic arrangement or adjustment. If the traffic orchestration is successful (the maximum capacity limit per TTI of the wireless network can be met after the traffic logic orchestration/adjustment), the device of the industrial system performs step 2406. If the traffic orchestration fails (the traffic logic cannot orchestrate/adjust, or the maximum capacity limit of the wireless network is exceeded after orchestration/adjustment), the device in the industrial system performs step 2407.

Step 2406: the devices in the industrial system continue with the subsequent data interaction flow.

Step 2407: the wireless networking of the industrial system fails, and devices in the industrial system notify an upper layer application system to reduce the number of wireless networking nodes (which can be understood as determining to reduce the service requirement and/or the requirement of the industrial system), or notify the wireless network to perform capacity expansion processing (increasing sites, expanding cell number, carrier number, etc.).

The scheme in the fourth embodiment describes how devices in the industrial system perform traffic arrangement adjustment transmission according to the capability restrictions and requirements of the wireless network. Specifically, after the key information of the wireless network is obtained, the equipment in the industrial system judges whether the current service sending requirement exceeds the capacity limit of the wireless network, then service arrangement is carried out according to the capacity limit of the wireless network, information interaction is carried out on the industrial system, upper-layer application and the wireless network, and supplementary processing is carried out on the arrangement failure scene. Therefore, the concurrent quantity of industrial system services can be prevented from exceeding the capacity limit of the wireless network, the timeliness of messages is improved, and the transmission efficiency of the wireless network is improved.

Example five

The fifth embodiment defines the content of cooperation and integration of the multi-terminal equipment in the wireless network when the industrial system and the wireless network are integrated and networked under the docking scene of the industrial system and the wireless network.

By way of example, fig. 31 shows a schematic flow diagram of a collaboration and fusion integration of multiple terminal devices in a wireless network. The specific process may include:

step 3101: collaborative multipath establishment between a plurality of terminal devices.

Discovery and connection establishment of neighboring nodes can be performed among a plurality of terminal devices.

Optionally, a through link (also called a direct link) is established in which a through path exists between the terminal devices. The relay link can be established if there is no through link between the terminal devices and the intercommunication can be realized through the wireless base station or other terminal devices.

When information interaction is carried out between the terminal devices, a plurality of paths can be adopted to send messages in parallel so as to ensure the reliability of message transmission; for example, as shown in fig. 32, the terminal device 1 and the terminal device 2 may send the message in parallel through the through link, the relay link 1 and the relay link 2, so as to improve the reliability of message transmission.

Optionally, one or more paths may be selected between the terminal devices for message transmission according to a message transmission requirement (e.g., qoS or reliability requirements of message transmission). For example, as shown in fig. 32, one or more paths among the through link, the relay link 1, and the relay link 2 may be selected to transmit the message according to the message transmission requirement between the terminal device 1 and the terminal device 2.

In an alternative manner, if a message is successfully transmitted on one link, the repeated transmission of the same message by other parallel links can be interrupted.

Step 3102: and networking among a plurality of terminal devices and a wireless base station grid (MESH).

Illustratively, each terminal device may maintain a list of other terminal devices that it may interconnect with. For example, a schematic diagram of MESH networking between a plurality of terminal devices and between a terminal device and a wireless base station may be shown in fig. 33.

A through link is established between the terminal devices through device-to-device (D2D).

And the relay links are established between the terminal devices through the base station, or the relay links are established between the terminal devices through other terminal devices.

After a period of node discovery, path search and connection establishment, the list maintained by the terminal device may tend to be stable.

After the terminal equipment is accessed or exited, each terminal equipment can refresh the corresponding list information.

Optionally, in order to control the scale of the list of terminal devices, a white list mechanism may be set for each terminal device, and the terminal devices entering the white list may search for each other. For example, the terminal device of the white list is a terminal device that is close to the finder, has good signal, good channel quality, or has a service association with the finder, etc.

Step 3103: and performing whole network time synchronization between the plurality of terminal devices and the base station.

As shown in fig. 34, a full-network time synchronization diagram is performed between a plurality of terminal devices and a base station, and the terminal devices can obtain air dictation time information from a wireless base station, thereby obtaining global accurate time information.

Furthermore, the terminal devices interact with each other, so that D2D time synchronization is realized. Alternatively, the terminal devices can also realize time synchronization by means of relay of a base station or other terminal devices.

The time synchronization range between the terminal devices can be enlarged, so that the time synchronization of all network nodes can be realized.

Step 3104: multicast or broadcast between a plurality of terminal devices.

Alternatively, a group relationship may be established between service related terminal devices, and a group relationship may be established between four terminal devices as shown in fig. 35. The group user list of the terminal devices establishing the group relationship may be copied to each terminal device in the group, and the respective terminal devices perform refresh maintenance.

The terminal devices in the group can multicast or broadcast according to the service requirement.

The fifth embodiment of the present invention solves the problem of how to cooperate and integrate multiple terminal devices to improve transmission reliability and efficiency when the industrial system and the wireless network are integrated and networked. Specifically, the multiple terminal devices can establish cooperative multipath, so that transmission reliability can be improved. And the MESH networking between the terminal equipment and the base station can improve the transmission reliability. Multicast and broadcast are enabled between terminal devices, so that efficiency can be further improved. In this way, the multi-terminal equipment in the wireless network cooperates, so that the certainty and instantaneity of the industrial system application message in the wireless network transmission can be improved.

Example six

Embodiment six introduces multi-access technology fusion and elastic air interface in the wireless network and industrial system docking scenario.

Illustratively, multiple access technology convergence and resilient air interfaces may be achieved through a process as shown in fig. 36. Specifically, the method comprises the following steps:

step 3601: the supported radio bands or frequency sets and usage rules are preconfigured.

For example, the frequency band may include one or more of the following: low frequency, frequency band below 6GHz (Sub 6G), high frequency millimeter wave, unlicensed (Unlicensed) spectrum, and the like.

Subframe setting: support TDD flexible uplink and downlink matching or support FDD, etc.

Various resource multiplexing techniques such as time division, frequency division, code division, space division, wave division, etc. are supported.

And supporting redundant transmission of resources.

Support various kinds of air interface codes: such as binary phase shift keying (binary phase shift keying, BPSK), quadrature phase shift keying (quadri phase shift keying, QPSK), 16-bit quadrature amplitude modulation (quadrature amplitude modulation, QAM), 64QAM, 256QAM, 1024QAM, etc.

Optionally, the gateway system of the wireless network may adjust the supported radio frequency bands or frequency sets and usage rules in real time.

Step 3602: pre-configuring a supported air interface system set.

For example, 3GPP systems such as 2G, 3G, 4G, 5G, 5.5G, 6G, etc. are supported.

Support side link (sidlink), D2D, etc.

Supporting wireless local area networks (wireless fidelity, wiFi), blueTooth technology (BlueTooth), etc.

Step 3603: devices in the wireless network adjust the air interface transmission mechanism combination.

Exemplary, fig. 37 shows a schematic diagram of a device adjustment air interface transmission mechanism combination in a wireless network. Specifically, the method comprises the following steps:

step 3701: the base station and the terminal equipment in the wireless network negotiate a plurality of network communication configuration strategy combinations (including frequency bands, proportion, multiplexing, redundancy, communication modes and the like) according to the respective capabilities, and set a change threshold value (thd) of the network state.

Step 3702: the base station and the terminal equipment in the wireless network detect the change condition of the network real-time communication state (such as load, interference, fading, shielding and the like) and judge whether the network state change value is larger than or equal to a preset change threshold value. If the network state change value is less than the preset change threshold, step 3703 is performed, and if the network state change value is greater than or equal to the preset change threshold, step 3704 is performed.

Step 3703: the base station and the terminal equipment in the wireless network use the used frequency band combination strategy and the communication access mode combination strategy.

Step 3704: a base station and terminal equipment in a wireless network change a frequency band combination strategy and a communication access system combination strategy.

Optionally, when the base station and the terminal device in the wireless network initially establish connection communication, the adopted frequency band combination strategy and the communication access mode combination strategy can be statically configured or randomly selected.

Step 3604: devices in the industrial system adjust the air interface transmission mechanism combination.

Illustratively, FIG. 38 shows a schematic diagram of a device adjustment air interface transmission mechanism combination in an industrial system. Specifically, the method comprises the following steps:

step 3801: devices in the industrial system select an initial policy combination from a plurality of sets of network communication configuration policy combinations (including frequency bands, proportions, multiplexing, redundancy, communication modes, etc.), and deploy the selected policy combination.

Step 3802: devices in the wireless network detect whether devices in the industrial system need to adjust the communication configuration policy combination.

Optionally, devices in the industrial system may also dynamically send a need to adjust the communication configuration policy combination to devices in the wireless network.

Devices in the industrial system detect the real-time effects of data transmission and determine if a communication configuration policy combination needs to be adjusted.

If the communication configuration policy combination does not need to be adjusted, step 3803 is performed, and if the communication configuration policy combination needs to be adjusted, step 3804 is performed.

Step 3803: and the used frequency band combination strategy and the communication access mode combination strategy are adopted.

Step 3804: the device in the wireless network changes the frequency band combination strategy and the communication access mode combination strategy according to the requirement, and feeds back the adjusted frequency band combination strategy and the communication access mode combination strategy to the device in the industrial system.

The solution in the sixth embodiment solves the problem of how to flexibly select the access technology and adaptively adjust the wireless air interface. Specifically, the terminal device and the base station in the wireless network support multiple access technologies, flexible selection and adaptive adjustment of an air interface transmission mechanism. Devices in the industrial system can flexibly call the air interface transmission mechanism combination. Thus, the access technology is flexibly selected and adaptively adjusted, and the requirements of time delay, reliability and the like of industrial application messages in wireless network transmission can be met.

Example seven

Embodiment seven describes the optimization of end-to-end (E2E) deterministic scheduling or transmission mechanisms in the context of industrial system and wireless network interfacing.

For example, the deterministic process of E2E may be as shown in fig. 39. Specific:

step 3901: each node of E2E realizes deterministic scheduling based on time stamp so as to reduce delay jitter.

For example, after the time synchronization between the plurality of terminal devices and the base station of the wireless network in the networking shown in fig. 34 in the fifth embodiment, when information is sent between the terminal devices, timestamp information and message deadline requirement information (i.e. the completion time of the message) may be carried. For example, as shown in the E2E time synchronization schematic diagram shown in fig. 40, when the terminal device 1 and the terminal device 2 perform information interaction, the terminal device 1 may carry timestamp information and a message deadline in a message, so that nodes 1 to n in a path may be scheduled according to the needs in a deterministic manner, perform timestamp calibration, reduce processing delay jitter, and timely transmit the message to the terminal device 2.

Optionally, the processing time limit of each node of the E2E on each service packet may be preconfigured to implement deterministic scheduling, and each node reduces processing delay jitter.

In the application, jitter can refer to the change condition of message transmission delay and the condition of deviation from an ideal position.

Step 3902: E2E each node carries out message transmission high reliability assurance. For example, each node of E2E guarantees high priority message transmission certainty by determining absolute priority, resource reservation, and redundancy mechanisms for message transmission.

Alternatively, each node may divide different resource allocation policies according to different QoS requirements or priority requirements.

For example, the following combinations may be referred to for different priorities of the messages to ensure the reliability of the message transmission:

high priority messages: absolute priority, E2E resource advance reservation, multipath redundancy mechanism, multiple resource redundancy transmission and other schemes.

Medium priority message: and the schemes of high priority, multi-path redundancy and the like are jointly guaranteed.

Low priority messages: best effort, system capacity is maximized.

The scheme in embodiment seven illustrates how E2E deterministic scheduling or transmission is implemented, and can be applied, for example, in the scenario of embodiment six. Specifically, after the E2E time synchronization is cooperatively implemented between a plurality of terminal devices, deterministic scheduling is implemented between each node based on the time stamp information, and differentiated reliability guarantee is performed according to the message priority, so that jitter of message transmission can be reduced, and the reliability of message transmission is improved.

Example eight

The eighth embodiment is for protocol interworking (also called semantic interworking) and compatible stock protocol during message transmission under the docking scenario of industrial system and wireless network, so as to ensure successful message transmission.

For example, fig. 41 shows a message transmission schematic based on protocol interworking. The specific process may include:

step 4101: and the equipment determines to send the message.

Step 4102: the device determines which protocol type the industrial protocol of the message is.

Step 4103: when the industrial protocol type is determined to be the newly defined protocol, the device transmits a message according to the newly defined protocol. It is also understood that the device transmits according to an optimization mechanism.

Step 4104: when the industrial protocol type is determined to be an intercommunication protocol such as an open platform communication unified architecture (ppen platform communications unified architecture, OPC-UA), the device sends a message according to the intercommunication protocol such as OPC-UA, or the device translates or converts the intercommunication protocol such as OPC-UA into a newly defined protocol and sends the message according to the newly defined protocol.

Step 4105: when the industrial protocol type is determined to be the stock industrial protocol, the device translates or converts the stock industrial protocol into a newly defined protocol and sends a message according to the newly defined protocol.

A schematic diagram of the protocol stack supported by the above procedure may be shown in fig. 42.

The stock industry protocol may include, among other things, the following: profinet, ethernet controlled automation technology (EtherCAT), high-speed industrial ethernet PowerLink, etherNet/IP, hypertext transfer protocol (hypertext transport protocol, HTTP), data distribution services (Data Distribution Service, DDS), etc.

And a stock protocol translation layer is newly added in the protocol stack, so that the mutual translation of the customized industrial application layer protocol and the stock industrial protocol is supported, and the transmission of the stock industrial protocol on the customized wireless network is supported. For example, in step 4104, an interworking protocol such as OPC-UA may be translated or converted into a newly defined protocol by the newly added stock translation layer, and in step 4105, an stock industrial protocol may be translated or converted into a newly defined protocol by the newly added stock translation layer.

Optionally, in a specific implementation, the process of identifying and translating the message protocol types can be realized by hardware to improve efficiency.

In a practical scenario, in one possible implementation, the above-mentioned packet transmission may be optimized in combination with the methods from embodiment one to embodiment seven.

The scheme in the eighth embodiment supports the translation and forwarding of the messages of the stock protocol and the newly defined protocol through the newly added translation layer of the stock protocol, so that the optimized transmission of the typical stock application layer protocol, the direct transmission and the optimized transmission of the messages of the semantic intercommunication protocol such as OPC-UA and the like can be supported.

The scheme of deep fusion and extremely simplified design of the industrial communication protocol and the wireless communication mechanism is introduced from different dimensions through the eight embodiments, so that the requirements of low cost and simplified deployment of industrial or industrial scene industrial communication protocol wireless transmission are guaranteed, the cost is reduced, the transmission efficiency is improved on the basis of guaranteeing high reliability of industrial application message transmission, and the balance of guarantee effect, networking complexity and deployment cost can be realized by being compatible with stock industrial protocol transmission.

It should be noted that, in the above eight examples, the sequence of steps in the flow is not limited, and the logic relationship is not limited, alternatively, each step may be a separate embodiment, which is not limited by the present application.

In the present application, unless otherwise specified, a device in a wireless network may be a terminal device in the wireless network, a base station in the wireless network, or another device in the wireless network.

In the description of the present application, only an industrial system is described as an example. It should be understood that an industry system may replace a description of an industry system, and an industry system may refer to a method of an industry system, both of which are similar and may be referred to each other.

Based on the above embodiments, the embodiments of the present application further provide a communication method, as shown in fig. 43, where the flow of the method may include:

step 4301: the first device obtains status information of the second device.

Step 4302: and the first equipment adjusts the transmission mode of the message according to the state information of the second equipment.

The first device may be a device in a first system, and the second device is a device in a wireless network; or the first device is a device in the wireless network, and the second device is a device in the first system; the first system may be an industrial system or an industrial system (also referred to as an industrial application system), etc. For convenience of description, in the following description, only the first system is exemplified as an industrial system, and it should be understood that this is not a limitation of the present application.

Optionally, the header of the message may include one or more of the following: sender identification, receiver identification, quality of service QoS requirement of the message, priority requirement of the message or user group identification; the message content of the message does not comprise a filling packet, and the message content of the message comprises message payload related compression information of a message before the message and/or a message after the message. Specifically, the frame format of the message may be referred to in the description of the first embodiment.

The device in the wireless network may be a base station in the wireless network, a terminal device in the wireless network, or other devices in the wireless network, which is not limited by the present application.

In an alternative embodiment, the method for the first device to obtain the state information of the second device may be: the first device obtains the state information of the second device through a control plane interface or a control plane network element of the wireless network. Reference may be made in particular to the description of an alternative embodiment of the third embodiment.

In another optional implementation manner, the method for the first device to acquire the state information of the second device may further be: the first device obtains the state information of the second device through a management surface network element of the wireless network. Reference may be made in particular to the description of the second alternative embodiment of the third embodiment.

Optionally, a connection is established between a management plane network element in the wireless network and a device in the industrial system, or the management plane network element in the wireless network and the device in the industrial system communicate through an API.

In yet another optional implementation manner, the method for the first device to obtain the state information of the second device may be: the first device obtains the state information of the second device through a user plane network element of the wireless network. Reference may be made in particular to the description of an alternative embodiment of the third embodiment described above.

Optionally, before the first device obtains the state information of the second device, the first device negotiates with the second device about a transmission mode of the state information.

For example, when the first device is a device in the industrial system and the second device is a device in the wireless network, the first device may obtain, by using a user plane network element of the wireless network, status information of the second device, which may include the following four methods:

the method a1 includes that the first equipment obtains state information of the second equipment through message associated information of the user plane network element. See for details the description of mode 1 in the fourth embodiment.

The method a2, the first device obtains the status information of the second device in shared information, wherein the shared information is configured in a device connected with the industrial system in the wireless network, or the shared information is configured in a device connected with the wireless network in the industrial system. See for details the description of the above embodiment four in modes 2 and 3.

And a3, the first equipment acquires the state information reported by the second equipment. See for details the description of mode 4 in the fourth embodiment.

The method a4 includes that the first device sends query information to the second device and receives query response information from the second device, wherein the query response information comprises the state information. See for details the description of mode 5 in the fourth embodiment.

The status information may be included in the message path information in any of the following manners: industrial ethernet message header, industrial ethernet message data portion, industrial ethernet message trailer, internet protocol IP message header, IP message data portion, or IP message trailer.

In one example, when the first device is a device in the industrial system and the second device is a device in the wireless network, the status information may include one or more of: status information of the wireless network, status information of the wireless terminal, capability information; wherein the status information of the wireless network may include one or more of: load, interference, fading, network packet loss rate, wireless air interface time accuracy, time synchronization accuracy, transmission delay, reliability of transmission delay, transmission delay jitter, reliability of transmission delay jitter, access frequency point configuration or wireless cell bandwidth configuration; the status information of the wireless terminal may include one or more of: the wireless terminal comprises a load, interference, fading, packet loss rate, channel quality, CPU utilization rate, equipment temperature, transmission delay, reliability of the transmission delay, transmission delay jitter, reliability of the transmission delay jitter, access frequency point configuration or wireless cell bandwidth configuration; the capability information may include one or more of the following: the wireless terminal comprises an air interface sending rule of the wireless network, scheduling capability limitation of the wireless network, capability information of the wireless terminal or subscription information of the wireless terminal.

In a possible manner, when the first device is a device in the industrial system and the second device is a device in the wireless network, the first device adjusts a transmission manner of a message according to state information of the second device, and the method may be that: the first device adjusts the transmission mode of the message according to the state information of the second device, wherein the transmission mode comprises one or more of the following steps: the message sending parameter, the message feedback mechanism, the message redundant sending mechanism or the message retransmission mechanism. See for details the description of the fourth embodiment.

Illustratively, the transmission parameters of the message may include one or more of the following: a transmission period parameter, a transmission Time starting point parameter, a Watchdog watch parameter, a Survival Time survivin Time parameter and a link reestablishment Time length parameter; the feedback mechanism of the message comprises whether to feed back the receiving state; the redundant sending mechanism of the message comprises the sending number of the message and/or the sending interval of the message; the retransmission mechanism of the message comprises whether to retransmit and/or retransmission and combination modes.

Specifically, when the first device is a device in the industrial system and the second device is a device in the wireless network, the first device adjusts a transmission mode of a message according to state information of the second device, and the method may be that: the first device adjusts the transmission mode of the message according to the service requirement and/or the requirement of the industrial system and the capability information in the state information.

Optionally, the first device adjusts the transmission mode of the message according to the service requirement and/or the requirement of the industrial system and the capability information in the status information, and the method may be: the first device judges whether the service requirement and/or the requirement of the industrial system exceeds the capability information; and if the first equipment determines that the service requirement and/or the requirement of the industrial system exceeds the capability information, the first equipment judges whether the transmission mode of the message meeting the capability information can be adjusted.

When the first device judges that the transmission mode of the message meeting the capability information cannot be adjusted, the first device sends notification information to the second device, wherein the notification information is used for indicating the capacity expansion of the wireless network; alternatively, the first device determines to reduce the business requirement and/or the requirement of the industrial system.

For example, the business requirements may include one or more of the following: qoS requirement of service, networking node number of service or networking topological relation of service; the requirements of the industrial system include one or more of the following: qoS requirements of the industrial system, the number of networking nodes of the industrial system or the networking topology relationship of the industrial system.

In yet another example, when the first device is a device in the wireless network and the second device is a device in the industrial system, the status information may include static configuration information and/or dynamic information; the static configuration information includes one or more of the following: sending period, watchdog parameter configuration, survival Time survivin Time parameter configuration, message sending starting point or topological relation among devices in the industrial system; the dynamic information includes one or more of the following: real-time packet loss information, real-time watchdog statistics timeout count information, survival time state information, message arrival time, clock precision, transmission delay information, transmission delay reliability information, transmission delay jitter reliability information, topology relation change information among devices in the industrial system or information whether the second device works effectively.

In a possible manner, when the first device is a device in the wireless network and the second device is a device in the industrial system, the first device adjusts a transmission manner of a message according to state information of the second device, and the method may be that: the first device adjusts the transmission mode of the message according to the state information of the second device, wherein the transmission mode comprises one or more of the following steps: the network resource allocation of the message, the redundant sending mechanism of the message or the retransmission mechanism of the message.

Optionally, the network resource configuration of the packet may include one or more of the following: pre-scheduling resources, unlicensed grant free scheduling resources, semi-persistent scheduling SPS resources or base station low latency related configuration in the wireless network; the redundant sending mechanism of the message may include one or more of the following: modulation and coding scheme MCS order, packet data convergence protocol PDCP repetition, spatial transmit diversity, multiple redundant transmission paths, slot aggregation or multiple transmission time interval TTI bundling repetition transmissions; the retransmission mechanism of the message may include one or more of the following: the protocol stack layer of retransmission, the retransmission times, the retransmission time, the feedback time length of retransmission or the retransmission and merging mode.

In an alternative embodiment, the first device and the second device may negotiate the sending time of different messages; the sending time of the different messages is the same, or the sending time of the different messages is different by a first time. See for details the description of the third embodiment above.

Alternatively, the first device may perform time synchronization with the second device.

Further, the first device performs time synchronization with the second device, which may include the following method: the first device determining to synchronize to global time or world time with the second device; alternatively, the first device uses the same time synchronization scheme or the same clock server as the second device. Wherein the same clock server may also be referred to as the same time source.

In an alternative embodiment, the first device may determine a protocol type of the packet; when the protocol type is a first protocol type, the first device transmits the message based on the first protocol type, wherein the first protocol type is a protocol type maintained by both the first device and the second device; when the protocol type is an OPC-UA type, the first device transmits the message based on the OPC-UA type, or the first device translates or converts the OPC-UA type into the first protocol type and transmits the message based on the first protocol type; and when the protocol type is a second protocol type, the first device translates or converts the second protocol type into the first protocol type, and transmits the message based on the first protocol type, wherein the second protocol type is a protocol type other than the first protocol type and the OPC-UA type.

The first protocol type may be a newly defined protocol type, and the second protocol type may be an inventory industry protocol type, which may be specifically described in the above embodiment eight.

The first device may determine the message according to an inter-message redundancy coding manner and/or a message combination coding manner between multiple users; the inter-message redundancy coding mode refers to adding part or all of information of the first N messages in the messages, wherein N is an integer greater than or equal to 1; the message joint coding mode between multiple users refers to adding redundant information between the messages of multiple users. See for details the description of the first embodiment.

Optionally, when the first device is a device in the wireless network and the second device is a device in the industrial system, the first device may adjust a redundant coding manner between messages and/or a message combination coding manner between multiple users according to network status information.

For example, the first device adjusts, according to the network state information, a redundant coding manner between messages and/or a message joint coding manner between multiple users, where the method may be: when the first device determines that the network state is unchanged according to the network state information, the first device keeps the inter-message redundancy coding mode and/or the inter-multi-user message combination coding mode unchanged; when the first device determines that the network state changes according to the network state information, the first device changes the inter-message redundancy coding mode and/or the inter-multi-user message combination coding mode.

In an alternative embodiment, the first device may transmit the packet according to a first protocol; the first protocol supports the function of packet data convergence protocol PDCP and the function of internet protocol IP or ethernet protocol. The first protocol may be a protocol corresponding to the convergence protocol layer in the second embodiment, and specifically, refer to the description related to the first embodiment.

Optionally, when the first device is a device in the wireless network, the first device may determine a scheduling manner according to a service feature.

In a possible manner, when the first device is a device in the wireless network and the first device is a terminal device, the first device may establish a direct link and/or a relay link with other terminal devices in the wireless network; and the first equipment selects one or more links from the established links to transmit the message according to the message transmission requirement. See for details the description of the fifth embodiment.

Optionally, the first device stores a terminal device list, and the terminal devices in the terminal device list can establish a link with the first device.

In one example, when the first device is a device in the wireless network and the first device is a terminal device, the first device may receive timing information from a base station in the wireless network; and the first equipment performs time synchronization according to the time service information.

In one embodiment, when the first device is a device in the wireless network, the first device may determine a plurality of network communication configurations, where the network communication configurations include a frequency band combination and a communication format combination; further, the first device selects one of the plurality of network configurations to be currently used. For details, reference may be made to the description of the sixth embodiment.

Illustratively, the first device may determine a network state change value; when the network state change value is larger than or equal to a preset value, the first equipment changes the used network communication configuration; and when the network state change value is smaller than the preset value, the first equipment keeps the used network communication configuration unchanged.

In an optional implementation manner, the first device sends the message, where the message includes first timestamp information and second timestamp information, where the first timestamp information is time information for sending the message, and the second timestamp information is completion time information of the message. Alternatively, the first device may be time synchronized prior to sending the message. For details, reference may be made to the description of the seventh embodiment.

By the method, bidirectional collaborative optimization between the industrial system and equipment in the wireless network can be realized in the scene of butt joint of the industrial system and the wireless network, and certainty, reliability and the like of message transmission are ensured. Meanwhile, the message transmission reliability and the transmission efficiency can be improved by simplifying the header and the content of the message.

Based on the above embodiments, the embodiment of the present application also provides a communication device, and referring to fig. 44, the communication device 4400 may include a transceiver unit 4401 and a processing unit 4402. The transceiver 4401 is configured to communicate with the communication device 4400, for example, to receive a message (information, message, or data) or send a message (information, message, or data), and the processor 4402 is configured to control and manage the operation of the communication device 4400. The processing unit 4402 may also control the steps performed by the transceiver unit 4401.

The communication apparatus 4400 may be, for example, a device in the wireless network in the above embodiment, a processor of the device in the wireless network, or a chip system, or a functional module, or the like. Alternatively, the communication device 4400 may specifically be a device in the industrial system (or an industrial system) in the above embodiment, a processor of the device in the industrial system (or the industrial system), or a chip system, or a functional module, or the like.

In one embodiment, when the communication device 4400 is configured to implement the function of the device in the wireless network in the above embodiment, the transceiver unit 4401 may implement the transceiver operation performed by the device in the wireless network in the above embodiment; the processing unit 4402 may implement operations other than the transceiving operations performed by devices in the wireless network in the above-described embodiments. Specific details concerning the embodiments described above are referred to, and will not be described in detail.

In another embodiment, when the communication device 4400 is used to implement the function of the apparatus in the industrial system (or the industrial system) in the above embodiment, the transceiver unit 4401 may implement the transceiver operation performed by the apparatus in the industrial system (or the industrial system) in the above embodiment; the processing unit 4402 may implement operations other than the transceiving operations performed by devices in an industrial system (or an industrial system) in the above-described embodiments. Specific details concerning the embodiments described above are referred to, and will not be described in detail.

It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. The functional units in the embodiments of the present application 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 application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

Based on the above embodiments, the present application also provides a communication device, and referring to fig. 45, a communication device 4500 may include a communication interface 4501 and a processor 4502. Optionally, a memory 4503 may also be included in the communication device 4500. The memory 4503 may be provided inside the communication device 4500 or may be provided outside the communication device 4500. Wherein the processor 4502 may control the communication interface 4501 to receive and transmit messages, information, messages, data, etc.

In particular, the processor 4502 may be a central processor (central processing unit, CPU), a network processor (network processor, NP) or a combination of CPU and NP. The processor 4502 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (programmable logic device, PLD), or a combination thereof. The PLD may be a complex programmable logic device (complex programmable logic device, CPLD), a field-programmable gate array (field-programmable gate array, FPGA), general-purpose array logic (generic array logic, GAL), or any combination thereof.

Wherein the communication interface 4501, the processor 4502, and the memory 4503 are connected to each other. Optionally, the communication interface 4501, the processor 4502, and the memory 4503 are connected to each other through a bus 4504; the bus 4504 may be a peripheral component interconnect standard (Peripheral Component Interconnect, PCI) bus or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus, etc. The buses may be classified as address buses, data buses, control buses, etc. For ease of illustration, only one thick line is shown in fig. 45, but not only one bus or one type of bus.

In an alternative embodiment, memory 4503 is used to store programs and the like. In particular, the program may include program code including computer-operating instructions. The memory 4503 may include RAM, and may also include non-volatile memory (non-volatile memory), such as one or more magnetic disk memories. The processor 4502 executes the application program stored in the memory 4503, thereby realizing the functions described above, and thus the functions of the communication device 4500 are realized.

Illustratively, the communication apparatus 4500 may be a device in the wireless network in the above-described embodiment; but may also be a device in an industrial system (or an industrial system) in the above-described embodiments.

In one embodiment, when the communication device 4500 performs the function of the device in the wireless network in the above embodiment, the communication interface 4501 may perform the transceiving operation performed by the device in the wireless network in the above embodiment; the processor 4502 may implement operations other than the transceiving operations performed by devices in the wireless network in the above-described embodiments. Specific details concerning the embodiments described above are referred to, and will not be described in detail.

In one embodiment, the communication device 4500, when implementing the functions of the devices in the industrial system (or the industrial system) in the above embodiment, the communication interface 4501 may implement the transceiving operations performed by the devices in the industrial system (or the industrial system) in the above embodiment; the processor 4502 may implement operations other than the transceiving operations performed by devices in the industrial system (or the industrial system) in the above-described embodiments. Specific details concerning the embodiments described above are referred to, and will not be described in detail.

Based on the above embodiments, the embodiments of the present application provide a communication system that may include devices in the wireless network and devices in the industrial system (or industry system), etc. to which the above embodiments relate.

The embodiment of the application also provides a computer readable storage medium for storing a computer program, which when executed by a computer, can implement the method provided by the above method embodiment.

The embodiment of the application also provides a computer program product, which is used for storing a computer program, and the computer can realize the method provided by the embodiment of the method when the computer program is executed by the computer.

The embodiment of the application also provides a chip, which comprises a processor, wherein the processor is coupled with the memory and is used for calling the program in the memory to enable the chip to realize the method provided by the embodiment of the method.

The embodiment of the application also provides a chip which is coupled with the memory and is used for realizing the method provided by the embodiment of the method.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A method of communication, comprising:

the method comprises the steps that a first device obtains state information of a second device;

the first equipment adjusts the transmission mode of the message according to the state information of the second equipment;

the first equipment is equipment in an industrial system, and the second equipment is equipment in a wireless network; or the first device is a device in the wireless network, and the second device is a device in the industrial system;

The message header of the message comprises one or more of the following: sender identification, receiver identification, quality of service QoS requirement of the message, priority requirement of the message or user group identification;

the message content of the message does not comprise a filling packet, and the message content of the message comprises message payload related compression information of a message before the message and/or a message after the message.

2. The method of claim 1, wherein the first device obtaining status information for the second device comprises:

the first device obtains the state information of the second device through a control plane interface or a control plane network element of the wireless network.

3. The method of claim 1, wherein the first device obtaining status information for the second device comprises:

the first device obtains the state information of the second device through a management surface network element of the wireless network.

4. A method according to claim 3, wherein a connection has been established between a management plane network element in the wireless network and a device in the industrial system or wherein communication is via an application program interface API between a management plane network element in the wireless network and a device in the industrial system.

5. The method of claim 1, wherein the first device obtaining status information for the second device comprises:

the first device obtains the state information of the second device through a user plane network element of the wireless network.

6. The method of claim 5, wherein prior to the first device obtaining the status information of the second device, the method further comprises:

the first device negotiates with the second device about the transmission mode of the state information.

7. The method of claim 5 or 6, wherein when the first device is a device in the industrial system and the second device is a device in the wireless network, the first device obtaining, by a user plane network element of the wireless network, status information of the second device, comprising:

the first equipment acquires the state information of the second equipment through the message associated information of the user plane network element; or alternatively

The first device obtains the state information of the second device in shared information, wherein the shared information is configured in a device connected with the industrial system in the wireless network or the shared information is configured in a device connected with the wireless network in the industrial system; or alternatively

The first device acquires the state information reported by the second device; or alternatively

The first device sends query information to the second device and receives query response information from the second device, wherein the query response information comprises the state information.

8. The method of claim 7, wherein the status information is included in the message associated information by any of: industrial ethernet message header, industrial ethernet message data portion, industrial ethernet message trailer, internet protocol IP message header, IP message data portion, or IP message trailer.

9. The method of any of claims 1-8, wherein when the first device is a device in the industrial system and the second device is a device in the wireless network, the status information comprises one or more of: status information of the wireless network, status information of the wireless terminal, capability information;

the status information of the wireless network includes one or more of: load, interference, fading, network packet loss rate, wireless air interface time accuracy, time synchronization accuracy, transmission delay, reliability of transmission delay, transmission delay jitter, reliability of transmission delay jitter, access frequency point configuration or wireless cell bandwidth configuration;

The state information of the wireless terminal includes one or more of: the wireless terminal comprises a load, interference, fading, packet loss rate, channel quality, CPU utilization rate, equipment temperature, transmission delay, reliability of the transmission delay, transmission delay jitter, reliability of the transmission delay jitter, access frequency point configuration or wireless cell bandwidth configuration;

the capability information includes one or more of the following: the wireless terminal comprises an air interface sending rule of the wireless network, scheduling capability limitation of the wireless network, capability information of the wireless terminal or subscription information of the wireless terminal.

10. The method of any one of claims 1-9, wherein when the first device is a device in the industrial system and the second device is a device in the wireless network, the first device adjusts a transmission manner of the message according to the state information of the second device, including:

the first device adjusts the transmission mode of the message according to the state information of the second device, wherein the transmission mode comprises one or more of the following steps: the message sending parameter, the message feedback mechanism, the message redundant sending mechanism or the message retransmission mechanism.

11. The method of claim 10, wherein the transmission parameters of the message include one or more of: a transmission period parameter, a transmission Time starting point parameter, a Watchdog watch parameter, a Survival Time survivin Time parameter and a link reestablishment Time length parameter; the feedback mechanism of the message comprises whether to feed back the receiving state; the redundant sending mechanism of the message comprises the sending number of the message and/or the sending interval of the message; the retransmission mechanism of the message comprises whether to retransmit and/or retransmission and combination modes.

12. The method of any one of claims 1-9, wherein when the first device is a device in the industrial system and the second device is a device in the wireless network, the first device adjusts a transmission manner of the message according to the state information of the second device, including:

the first device adjusts the transmission mode of the message according to the service requirement and/or the requirement of the industrial system and the capability information in the state information.

13. The method according to claim 12, wherein the first device adjusts the transmission mode of the message according to service requirements and/or requirements of the industrial system and capability information in the status information, comprising:

The first device judges whether the service requirement and/or the requirement of the industrial system exceeds the capability information;

and if the first equipment determines that the service requirement and/or the requirement of the industrial system exceeds the capability information, the first equipment judges whether the transmission mode of the message meeting the capability information can be adjusted.

14. The method of claim 13, wherein when the first device determines that the manner of transmission of the message that satisfies the capability information cannot be adjusted, the method further comprises:

the first device sends notification information to the second device, wherein the notification information is used for indicating the capacity expansion of the wireless network; or alternatively

The first device determines to reduce the business requirement and/or the requirement of the industrial system.

15. The method of any of claims 13-14, wherein the business requirements include one or more of: qoS requirement of service, networking node number of service or networking topological relation of service; the requirements of the industrial system include one or more of the following: qoS requirements of the industrial system, the number of networking nodes of the industrial system or the networking topology relationship of the industrial system.

16. The method of any of claims 1-6, wherein the status information comprises static configuration information and/or dynamic information when the first device is a device in the wireless network and the second device is a device in the industrial system;

the static configuration information includes one or more of the following: sending period, watchdog parameter configuration, survival Time survivin Time parameter configuration, message sending starting point or topological relation among devices in the industrial system;

the dynamic information includes one or more of the following: real-time packet loss information, real-time watchdog statistics timeout count information, survival time state information, message arrival time, clock precision, transmission delay information, transmission delay reliability information, transmission delay jitter reliability information, topology relation change information among devices in the industrial system or information whether the second device works effectively.

17. The method according to any one of claims 1-6 and 16, wherein when the first device is a device in the wireless network and the second device is a device in the industrial system, the first device adjusts a transmission manner of the message according to the state information of the second device, including:

The first device adjusts the transmission mode of the message according to the state information of the second device, wherein the transmission mode comprises one or more of the following steps: the network resource allocation of the message, the redundant sending mechanism of the message or the retransmission mechanism of the message.

18. The method of claim 17, wherein the network resource configuration of the message comprises one or more of: pre-scheduling resources, unlicensed grant free scheduling resources, semi-persistent scheduling SPS resources or base station low latency related configuration in the wireless network;

the redundant sending mechanism of the message comprises one or more of the following: modulation and coding scheme MCS order, packet data convergence protocol PDCP repetition, spatial transmit diversity, multiple redundant transmission paths, slot aggregation or multiple transmission time interval TTI bundling repetition transmissions;

the retransmission mechanism of the message comprises one or more of the following: the protocol stack layer of retransmission, the retransmission times, the retransmission time, the feedback time length of retransmission or the retransmission and merging mode.

19. The method of any one of claims 1-18, wherein the method further comprises:

the first equipment and the second equipment negotiate the sending time of different messages; the sending time of the different messages is the same, or the sending time of the different messages is different by a first time.

20. The method of any one of claims 1-19, wherein the method further comprises:

the first device performs time synchronization with the second device.

21. The method of claim 20, wherein the first device performs time synchronization with the second device, comprising:

the first device determining to synchronize to global time or world time with the second device; or alternatively

The first device adopts the same time synchronization mode or the same clock server as the second device.

22. The method of any one of claims 1-21, wherein the method further comprises:

the first device determines the protocol type of the message;

when the protocol type is a first protocol type, the first device transmits the message based on the first protocol type, wherein the first protocol type is a protocol type maintained by both the first device and the second device;

when the protocol type is an OPC-UA type, the first device transmits the message based on the OPC-UA type, or the first device translates or converts the OPC-UA type into the first protocol type and transmits the message based on the first protocol type;

And when the protocol type is a second protocol type, the first device translates or converts the second protocol type into the first protocol type, and transmits the message based on the first protocol type, wherein the second protocol type is a protocol type other than the first protocol type and the OPC-UA type.

23. The method of any one of claims 1-22, wherein the method further comprises:

the first equipment determines the message according to a redundancy coding mode among messages and/or a message combination coding mode among multiple users;

the inter-message redundancy coding mode refers to adding part or all of information of the first N messages in the messages, wherein N is an integer greater than or equal to 1;

the message joint coding mode between multiple users refers to adding redundant information between the messages of multiple users.

24. The method of claim 23, wherein when the first device is a device in the wireless network and the second device is a device in the industrial system, the method further comprises:

and the first equipment adjusts a redundant coding mode between messages and/or a message combination coding mode between multiple users according to the network state information.

25. The method of claim 24, wherein the first device adjusts an inter-packet redundancy coding scheme and/or an inter-multi-user packet joint coding scheme according to the network status information, comprising:

when the first device determines that the network state is unchanged according to the network state information, the first device keeps the inter-message redundancy coding mode and/or the inter-multi-user message combination coding mode unchanged;

when the first device determines that the network state changes according to the network state information, the first device changes the inter-message redundancy coding mode and/or the inter-multi-user message combination coding mode.

26. The method of any one of claims 1-25, wherein the method further comprises:

the first device transmits the message according to a first protocol; the first protocol supports the function of packet data convergence protocol PDCP and the function of internet protocol IP or ethernet protocol.

27. The method of any of claims 1-26, wherein when the first device is a device in the wireless network, the method further comprises:

and the first equipment determines a scheduling mode according to the service characteristics.

28. The method of any of claims 1-27, wherein when the first device is a device in the wireless network and the first device is a terminal device, the method further comprises:

the first equipment establishes a direct link and/or a relay link with other terminal equipment in the wireless network;

and the first equipment selects one or more links from the established links to transmit the message according to the message transmission requirement.

29. The method of claim 28, wherein the method further comprises:

the first device stores a terminal device list, and the terminal devices in the terminal device list can establish a link with the first device.

30. The method of any of claims 1-29, wherein when the first device is a device in the wireless network and the first device is a terminal device, the method further comprises:

the first device receives time service information from a base station in the wireless network;

and the first equipment performs time synchronization according to the time service information.

31. The method of any of claims 1-29, wherein when the first device is a device in the wireless network, the method further comprises:

The first equipment determines various network communication configurations according to the network communication configuration, wherein the network communication configuration comprises frequency band combination and communication system combination;

the first device selects one of the plurality of network configurations to be currently used.

32. The method of claim 31, wherein the method further comprises:

the first device determining a network state change value;

when the network state change value is larger than or equal to a preset value, the first equipment changes the used network communication configuration;

and when the network state change value is smaller than the preset value, the first equipment keeps the used network communication configuration unchanged.

33. The method of any one of claims 1-32, wherein the method further comprises:

the first device sends the message, wherein the message comprises first timestamp information and second timestamp information, the first timestamp information is the time information for sending the message, and the second timestamp information is the completion time information of the message.

34. A communication device, characterized by a memory, a processor, and a communication interface, wherein:

the communication interface is used for the communication device to communicate;

The memory is used for storing computer instructions;

the processor for invoking computer instructions in the memory to perform the method of any of claims 1-33 via the communication interface.

35. A computer readable storage medium having stored therein computer executable instructions which when invoked by the computer to perform the method of any one of claims 1-33.

36. A computer program product comprising instructions which, when run on a computer, cause the method of any one of claims 1-33.

37. A chip, characterized in that the chip is coupled to a memory for reading and executing program instructions stored in the memory for implementing the method according to any of claims 1-33.