WO2020034195A1

WO2020034195A1 - Industrial application data sending and receiving method and apparatus

Info

Publication number: WO2020034195A1
Application number: PCT/CN2018/101068
Authority: WO
Inventors: 张洁; 王强; 丹尼尔博芬西彭
Original assignee: 西门子股份公司; 张洁; 王强; 丹尼尔博芬西彭
Priority date: 2018-08-17
Filing date: 2018-08-17
Publication date: 2020-02-20

Abstract

The present invention relates to an industrial application data sending and receiving method and apparatus. The data sending method comprises: acquiring a data packet to be sent; processing, by means of encoding and removing multiple bits, the data packet to be sent to obtain an encoded data packet and an auxiliary data packet, wherein the auxiliary data packet contains the multiple removed bits; and sending the encoded data packet via a first wireless link of multiple wireless links, and sending the auxiliary data packet via a second wireless link of the multiple wireless links.

Description

Data sending and receiving method and device for industrial applications

Technical field

The invention relates to a method and a device for sending and receiving data for industrial applications.

Background technique

Generally, in the process of transmitting data on a communication network, if a data packet cannot be received correctly, the receiving end will ask the sending end to send the data again. This process is repeated until the number of times that the data packet can be correctly received or retransmitted reaches the upper limit. Since the sender will resend additional data packets only when the sender receives a negative response from the receiver, high latency is unavoidable when the link quality is poor. Compared with general cellular communication systems, industrial applications require higher reliability and lower latency than high data transmission rates. The error correction system and retransmission mechanism can improve the reliability of data transmission to a certain extent, but at the cost of higher delay.

Summary of the Invention

Embodiments of the present invention provide a method and a device for transmitting and receiving data in industrial applications, and particularly provide a redundant solution based on multiple communication links to provide reliable wireless communication for industrial applications, thereby at least solving industrial applications The problem of high communication delay and poor reliability in China.

According to an aspect of the embodiment of the present application, a data transmission method for industrial application is provided, which includes acquiring a data packet to be transmitted; processing a data packet to be transmitted by encoding and removing multiple bits to obtain an encoded data packet and an auxiliary data packet, Wherein, the auxiliary data packet includes a plurality of bits removed; and the encoded data packet is transmitted through a first wireless link among the plurality of wireless links, and the auxiliary data packet is transmitted through a second wireless link among the plurality of wireless links. . The method of the present invention improves the quality of service, and the combination of the encoded data packet and the auxiliary data packet obtained by removing bits increases the probability of correct decoding and reduces the number of retransmissions. Moreover, the method transmits data packets on two mutually independent links, which makes the failure of one link not to interrupt the entire communication process.

The invention provides a redundancy mechanism based on multiple parallel links to achieve reliable wireless communication in industrial applications. In the prior art, for the case of a single link, ARQ / HARQ (hybrid automatic repeat request) retransmission mechanism is usually used to ensure correct transmission; for systems and devices with multiple parallel independent links, redundancy can be used Transmission, such as PRP (Parallel Redundancy Protocol), sends the same data packet on two independent links. Compared with the retransmission mechanism on a single link or multiple links in the prior art, the method according to the embodiment of the present invention improves the reliability of data transmission and reduces the data transmission when the correct transmission is met. Delay.

According to the data transmission method of the exemplary embodiment of the present application, the length of the auxiliary data packet is smaller than the length of the encoded data packet. The length of the auxiliary data packet is designed to be much smaller than the length of the encoded data packet, thereby reducing the requirements for link quality. In addition, coded packets and auxiliary data packets are sent separately through different wireless links, and smaller length data packets can be sent on independent links, which not only ensures the correctness of data transmission, but also improves transmission efficiency and Reduced latency.

According to the data transmission method of the exemplary embodiment of the present application, processing a data packet to be transmitted by encoding and removing multiple bits includes: using a Turbo or LDPC encoding mechanism to encode a data packet to be transmitted and puncturing the encoded data packet To obtain the punctured coded packets and punctured bits. Such encoding can be applied to a variety of different communication channels, can meet the requirements of a variety of wireless links used in embodiments of the present invention, and also provides reliable error correction to ensure that correct information is received.

The data transmission method according to the exemplary embodiment of the present application further includes selecting a wireless link for transmitting the encoded data packet and a wireless link for transmitting the auxiliary data packet from the plurality of wireless links. According to the actual situation of multiple transmission links, you can proactively select the link used to send encoded data packets and auxiliary data packets. For example, after selecting the wireless link used to send encoded data packets, you can use a different Wireless link to send auxiliary data packets.

According to the data transmission method of the exemplary embodiment of the present application, a wireless access chain for transmitting the encoded data packet is determined based on at least one of channel quality and load status, the size of the encoded data packet, and the quality of service of multiple wireless links. And wireless access links that send auxiliary data packets. By considering different parameters of multiple wireless links, a communication link suitable for sending different data packets in an aggregation network is effectively determined, which reduces communication delay and improves transmission efficiency.

According to the data sending method of the exemplary embodiment of the present application, the plurality of wireless links adopt different wireless access technologies. This method can effectively aggregate multiple wireless access technologies and choose to use multiple wireless access technologies to send encoded data packets and auxiliary data packets.

According to the data transmission method of the exemplary embodiment of the present application, according to the method of the exemplary embodiment of the present application, the wireless access technology includes LTE and WLAN. Embodiments of the present invention can be based on LTE-WLAN link aggregation defined by 3GPP, which supports terminal equipment or mobile equipment using both LTE and WLAN technologies, ensuring high data transmission efficiency and low latency. LTE provides greater coverage than WLAN. A base station eNB can cooperate with multiple WLAN access points. In LTE-WLAN aggregation, the eNB configures the user equipment UE through the WLAN identification code. The user equipment can move between these multiple access points without notifying the network. This allows WLANs to operate seamlessly and transparently, while also providing higher throughput. On the other hand, WLAN offloads the load of LTE and gains diversity that provides higher throughput for the entire communication.

According to another aspect of the embodiments of the present application, there is provided a data receiving method for industrial applications, including receiving encoded data packets via a first wireless link among a plurality of wireless links, and via a second wireless link among the plurality of wireless links. Receiving auxiliary data packets, wherein the auxiliary data packet contains multiple bits removed; and decoding the encoded data packet, including discarding the auxiliary data packet if the decoding is successful; if decoding fails, using the auxiliary data packet to continue decoding the encoded data packet . Receive different data packets on multiple parallel links, which provides reliable wireless communication for industrial applications and ensures the correctness of the received data. The method according to the embodiment of the present invention can effectively meet the requirements of high reliability and low latency in industrial applications.

According to the data receiving method of the exemplary embodiment of the present application, decoding the encoded data packet further includes: if the decoding fails, not sending a negative response NACK and waiting for the auxiliary data packet; and if the decoding is successful, sending a correct response ACK. The use of auxiliary data packets to decode the encoded data packets ensures the correctness of the received information and effectively reduces the impact of channel interference on bit information.

According to the data receiving method of the exemplary embodiment of the present application, waiting for the auxiliary data packet includes: if the waiting timeout occurs, initiating a retransmission request. In the case of waiting for the auxiliary data packet to fail, the receiving end may request the transmitting end to resend the data to ensure successful reception of the data.

According to the data receiving method of the exemplary embodiment of the present application, the plurality of wireless links adopt different wireless access technologies. This can effectively aggregate multiple radio access technologies and choose to use multiple radio access technologies to send encoded data packets and auxiliary data packets.

According to the data receiving method of the exemplary embodiment of the present application, the wireless access technology includes LTE and WLAN. It can support terminal equipment or mobile equipment to use both LTE and WLAN technologies, ensuring high data transmission efficiency and low latency.

According to another aspect of the embodiments of the present application, a data sending device for industrial application is provided, which includes an obtaining unit to obtain a data packet to be sent; a processing unit to process the data packet to be sent by encoding and removing multiple bits to obtain an encoding A data packet and an auxiliary data packet, wherein the auxiliary data packet includes a plurality of bits removed; and a transmitting unit transmits an encoded data packet via a first wireless link among the multiple wireless links, and simultaneously transmits the encoded data packet through the multiple wireless links. The second wireless link sends auxiliary data packets. The device uses a redundant mechanism based on multiple parallel links of different wireless links to achieve reliable data transmission in industrial applications.

According to the data sending device of the exemplary embodiment of the present application, the length of the auxiliary data packet is much smaller than the length of the encoded data packet, thereby reducing the requirement on the link quality. Smaller or smaller data packets can be sent on a link different from the one sending the encoded information, which not only ensures the correctness of data transmission but also reduces the load of data transmission, improves transmission efficiency and reduces delay.

According to the data sending device of the exemplary embodiment of the present application, the processing unit is further configured to use a Turbo or LDPC encoding mechanism to encode a data packet to be transmitted and puncture the encoded data packet to obtain the punctured encoded data packet and the data packet. Kongbit. This can meet the transmission rate requirements of multiple wireless access technologies, and also provides reliable error correction to ensure that the correct information is received.

The data transmitting apparatus according to the exemplary embodiment of the present application further includes a selecting unit that selects a wireless link that transmits an encoded data packet and a wireless link that transmits an auxiliary data packet from a plurality of wireless links. According to the actual situation of multiple transmission links, the link used to send the encoded data packets and auxiliary data packets can be actively selected.

According to a data transmitting apparatus according to an exemplary embodiment of the present application, a wireless link and a wireless link for transmitting an encoded data packet are determined based on at least one of channel quality and load status, a length of an encoded data packet, and a quality of service of a plurality of wireless links. A wireless link that sends auxiliary data packets. Consider different parameters of multiple wireless links to determine which wireless link to use to send different data packets.

According to the data transmitting apparatus of the exemplary embodiment of the present application, the plurality of wireless links adopt different wireless access technologies. This can effectively aggregate multiple wireless access technologies and choose to use multiple wireless access technologies to send encoded data packets and auxiliary data packets.

According to the data transmitting apparatus of the exemplary embodiment of the present application, the wireless access technology includes LTE and WLAN. The data sending device of the present invention supports a terminal device or a mobile device to use LTE and WLAN technologies simultaneously, ensuring high data transmission efficiency and low delay.

According to another aspect of the embodiments of the present application, there is provided a data receiving device for industrial applications, including a receiving unit that receives a coded data packet via a first wireless link of a plurality of wireless links, and a second wireless link through a plurality of wireless links. The link receives an auxiliary data packet, where the auxiliary data packet contains multiple bits removed when encoding the data packet; and a decoding unit that decodes the encoded data packet, including discarding the auxiliary data packet if the decoding is successful; if the decoding fails, using The auxiliary data packet continues to decode the encoded data packet. The device according to the present invention receives different data packets on multiple parallel links that aggregate different wireless links to provide reliable wireless communication for industrial applications, to ensure the correctness of the received data, and to meet high reliability in industrial applications. And low latency requirements.

According to the data receiving apparatus of the exemplary embodiment of the present application, the decoding unit is further configured to: if the decoding of the encoded data packet fails, do not send a negative answer NACK and wait for the auxiliary data packet; and if the decoding is successful, send a correct answer ACK. This ensures the correctness of the received information and effectively reduces the impact of channel interference on bit information.

According to the data receiving apparatus of the exemplary embodiment of the present application, the decoding unit is further configured to: if the waiting timeout occurs, initiate a retransmission request. In the case of waiting for the auxiliary data packet to fail, the receiving end may request the transmitting end to resend the data to ensure successful reception of the data.

According to the data receiving apparatus of the exemplary embodiment of the present application, the plurality of wireless links adopt different wireless access technologies. This can effectively aggregate multiple wireless access technologies, and choose to use multiple wireless access technologies to send encoded data packets and auxiliary data packets, respectively.

According to the data receiving apparatus of the exemplary embodiment of the present application, the wireless access technology includes LTE and WLAN. The data receiving device of the present invention supports a terminal device or a mobile device to use LTE and WLAN technologies simultaneously, ensuring high data transmission efficiency and low delay.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings constitute a part of this specification to help further understand the present invention. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In the drawings, the same parts are denoted by the same reference numerals. The figure shows:

Figure 1 shows a schematic diagram of an industrial network according to an embodiment of the invention.

2 is a schematic flowchart of a data sending method according to an embodiment of the present invention;

3 is a schematic flowchart of a data sending method according to an exemplary embodiment of the present invention;

4 is a schematic flowchart of a data receiving method according to an embodiment of the present invention;

5 is a schematic flowchart of a data receiving method according to an exemplary embodiment of the present invention;

6 is a schematic structural diagram of a data sending device according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a data transmitting apparatus according to an exemplary embodiment of the present invention; FIG.

8 is a schematic structural diagram of a data receiving apparatus according to an embodiment of the present invention;

FIG. 9 illustrates a structure diagram of a data receiving apparatus according to an exemplary embodiment of the present invention.

detailed description

In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described The examples are only examples of a part of the present invention, but not all examples. Based on the embodiments of the present invention, all other schemes obtained by a person of ordinary skill in the art without making creative labor should fall within the protection scope of the present invention.

It should be noted that the terms “first” and “second” in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data so used may be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in an order other than those illustrated or described herein. Furthermore, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, apparatus, product, or device that contains a series of steps or units need not be limited to those explicitly listed Those steps or units may instead include other steps or units not listed or inherent to these processes, methods, products or equipment.

Figure 1 shows a schematic diagram of an industrial network according to an embodiment of the invention. In the industrial network shown schematically, at the transmitting end, the first user equipment UE1 is selectively connected to the first network 500 and the second network 600 in a wireless manner, and via the first network 500 and / or the second network 600 sends data packets. Moreover, the computer device 301, the programmable logic controller (PLC) 302, and various industrial sensors 303 are connected to the switch 304 through a bus, and the switch 304 can be selectively connected to the first network 500 and the second network 600 wirelessly, Thus, the computer device 301, the programmable logic controller 302, and the various industrial sensors 303 can send data packets via the first network 500 and / or the second network 600. For example, the first user equipment UE1 and the first base station eNB1 and the second base station eNB2 of the first network 500 respectively establish communication links for sending data packets on different links in the network. Alternatively, the first user equipment UE1 establishes communication links with the first access point AP1 and the second access point AP2 of the second network 600, respectively, for sending data packets on different links in the network. Alternatively, the first user equipment UE1 establishes communication links with the first base station eNB1 of the first network 500 and the first access point AP1 of the second network 600, respectively, and is configured to send data packets on communication links in different networks. Similarly, the computer device 301, the programmable logic controller 302, and various industrial sensors 303 establish a communication link with the first network 500 and / or the second network 600 through the switch 304, and implement the same data as the first user equipment UE1 Sending mechanism.

In addition, at the receiving end, the second user equipment UE2 may selectively connect with the first network 500 and the second network 600 in a wireless manner with the same communication mechanism as the first user equipment UE1, and is configured to receive data from the first user equipment UE1 , Computer equipment 301, programmable logic controller 302, and various industrial sensors 303. Moreover, the computer device 401, the programmable logic controller 402, and various industrial sensors 403 can be selectively connected to the first network 500 and the second network 600 wirelessly via the switch 404, and the switch 404 can communicate with the switch 304 in the same manner. The mechanism communicates with the first network 500 and / or the second network 600 for receiving data from the first user equipment UE1, the computer equipment 301, the programmable logic controller 302, and various industrial sensors 303.

In the embodiment of the present invention, for example, the user equipment UE1 and UE2 are mobile devices, such as a smart phone or a smart operation terminal, held by an operator in a factory or an operating room. For example, the first network 500 is a communication network using LTE technology, and includes a first base station eNB1 and a second base station eNB2; the second network 600 is a communication network using WLAN (Wireless Local Area Network) technology, and includes a first access point AP1 and second access point AP2. For example, the

computer devices

301 and 401 are desktop computers or laptop computers.

Programmable logic controllers

302 and 402 are used to control switches, and are also used to control analog (for example, current, voltage, temperature, pressure, etc.) and digital (for example, displacement of machine tool components, etc.). In the embodiment of the present invention, the

programmable logic controllers

302 and 402 may have a wired or wireless networking communication function, for example, may be connected to a personal computer or one or more programmable logic controllers for communication, and the computer may Participate in programming and control and management of programmable logic controllers.

Industrial sensors

303 and 403 are used to collect and store operating data (eg, speed, force, torque, pressure, acceleration, etc.) of a large number of industrial equipment. For example, computer equipment 301, programmable logic controller 302, and various industrial sensors 303 can be connected by CAN field bus technology; computer equipment 401, programmable logic controller 402, and various industrial sensors 403 can also be connected by CAN field bus technology .

FIG. 2 is a schematic flowchart of a data sending method according to an embodiment of the present invention. The data sending method according to the embodiment of the present application includes:

Step S101: Obtain a data packet to be sent. A data packet corresponding to the data to be sent is first obtained, and the data packet contains valid information in the data to be transmitted to the destination. In step S103, the data packet to be transmitted is processed by encoding and removing multiple bits to obtain an encoded data packet and an auxiliary data packet, wherein the auxiliary data packet includes the removed multiple bits. The encoded information has strong anti-interference. For example, a Turbo or LDPC (Low Density Parity Check) encoding mechanism is used to encode a data packet to be transmitted. Turbo codes and low density parity check codes are applicable to 3G, 4G, 5G mobile communication standards and 802.11ax standards. Moreover, in the encoding process, an auxiliary data packet is obtained by removing a part of the bits. In step S105, an encoded data packet is transmitted via a first wireless link among the plurality of wireless links, and an auxiliary data packet is transmitted via a second wireless link among the plurality of wireless links. In this step, an encoded data packet and an auxiliary data packet are transmitted simultaneously via different communication links.

FIG. 3 is a schematic flowchart of a data transmission method according to an exemplary embodiment of the present invention. A data sending method according to an exemplary embodiment of the present application includes:

In step S201, a data packet to be transmitted is acquired. In step S203, the data packet to be transmitted is processed by encoding and removing multiple bits to obtain an encoded data packet and an auxiliary data packet, where the auxiliary data packet includes the removed multiple bits. The length of the auxiliary data packet is much smaller than the length of the encoded data packet. For example, when encoding, a Turbo or LDPC encoding mechanism is used to encode a data packet to be transmitted and puncture the encoded data packet to obtain a punctured encoded data packet and punctured bits. The punctured bits are not discarded, but are stored in the auxiliary data packet for subsequent transmission at the same time as the encoded bits. In step S205, a wireless link that transmits an encoded data packet and a wireless link that transmits an auxiliary data packet are selected from a plurality of wireless links. In step S207, the encoded data packet is transmitted via the first wireless link of the plurality of wireless links, and the auxiliary data packet is transmitted via the second wireless link of the plurality of wireless links.

In the embodiment of the present application as shown in FIG. 3, the multiple wireless links include, but are not limited to, LTE (Long Term Evolution Technology) and WLAN (Wireless Local Area Network). Based on this, the base station eNB and the user equipment UE support LTE-WLAN aggregation and can use both LTE and WLAN links. Encoded data packets and auxiliary data packets are always sent over different wireless links. In LTE, the base station eNB may use user equipment feedback such as channel quality (CQI) and radio resource management functions to determine which cell to use and how to schedule data packets. For example, based on at least one of the channel quality and load status of multiple wireless links, the size of the encoded data packet, and the quality of service (QoS), determine the wireless link that sends the encoded data packet and the wireless link that sends the auxiliary data packet .

In addition, the multiple wireless links in this embodiment use different wireless access technologies. Moreover, wireless access technologies include, but are not limited to, LTE and WLAN. For example, if the load of the current link using LTE is high, then data is sent on the link using WLAN, and the auxiliary data packet with a shorter length than the encoded data packet is sent via LTE. Alternatively, if the channel quality of the link using WLAN is poor, the encoded data packet is sent via the link using LTE, and the auxiliary data packet is sent via the link using WLAN. The base station eNB can decide which data packet is transmitted via which wireless link. For example, in the downlink, the eNB scheduler decides whether data packets are sent via LTE or WLAN. If the encoded data packet is sent via LTE, the auxiliary data packet is sent via WLAN. In the uplink, the base station eNB also schedules data transmission according to the current LTE MAC specification, and the WLAN station part of the user equipment UE initiates wireless transmission on the WLAN. Therefore, the base station eNB has higher flexibility to fully control the data transmission of the entire uplink.

In addition, in this embodiment, if one of a plurality of communication links or a plurality of wireless links for transmitting data fails or fails, the communication is converted from a mechanism of a plurality of parallel links used into a single Link working mode.

FIG. 4 is a schematic flowchart of a data receiving method according to an embodiment of the present invention. The data receiving method according to the embodiment of the present application includes step S301, receiving an encoded data packet via a first wireless link among a plurality of wireless links, and receiving an auxiliary data packet via a second wireless link among the plurality of wireless links, The auxiliary data packet includes a plurality of bits removed when the data packet is encoded. Step S303, decoding the encoded data packet includes: if the decoding is successful, giving up the auxiliary data packet; if the decoding fails, using the auxiliary data packet to continue decoding the encoded data packet.

FIG. 5 is a schematic flowchart of a data receiving method according to an exemplary embodiment of the present invention. A data receiving method according to an exemplary embodiment of the present application includes step S401, receiving an encoded data packet via a first wireless link among a plurality of wireless links, and receiving auxiliary data via a second wireless link among the plurality of wireless links. A packet, wherein the auxiliary data packet contains a plurality of bits that are removed when the data packet is encoded. Multiple wireless links include, but are not limited to, LTE and WLAN. In step S403, decoding the encoded data packet includes discarding the auxiliary data packet if the decoding is successful; if the decoding fails, using the auxiliary data packet to continue decoding the encoded data packet. In step S405, if the decoding fails, a negative response NACK is not transmitted and the auxiliary data packet is waited; and if the decoding is successful, a correct response ACK is transmitted. In step S407, if waiting for the auxiliary data packet times out, a retransmission request is initiated.

In the exemplary embodiment of the present application as shown in FIG. 5, when receiving, for example, an encoded data packet or an auxiliary data packet may be received first, and if the auxiliary data packet is received first, the auxiliary data is retained. Packet, and waiting to encode the packet. If the encoded data packet is received first, the encoded data packet is decoded immediately. If the decoding is successful, the correct response ACK is sent; if the decoding fails, the auxiliary data packet is waited, and then the auxiliary data packet and the encoded data packet are combined to continue decoding . When waiting for the encoded data packet or auxiliary data packet to time out, or when both of them cannot be decoded correctly, send a negative response NACK and request the sender to retransmit. For example, HARQ (Hybrid Automatic Repeat Request) is performed, and data is required to be resent. The retransmitted data may include the same data as the previous transmission or include additional data. At the same time, timers are respectively set on the base station eNB and the user equipment UE. When the receiving end has not received the designated data packet within a given period, the retransmission mechanism will be triggered again. In addition, data packets are sent on both LTE and WLAN, and data packets sent on these two different links will arrive at the receiving end at different times. Therefore, a reordering mechanism is provided to pass these packets to the upper layers of the communication architecture.

FIG. 6 is a schematic structural diagram of a data transmitting apparatus 100 according to an embodiment of the present invention. The data sending device 100 according to the embodiment of the present application includes an obtaining unit 101 to obtain a data packet to be transmitted; a processing unit 103 to process the data packet to be transmitted by encoding and removing multiple bits, to obtain an encoded data packet and an auxiliary data packet Wherein the auxiliary data packet includes a plurality of bits removed; the sending unit 105 sends an encoded data packet via a first wireless link among the plurality of wireless links, and at the same time via a second wireless link among the plurality of wireless links Send auxiliary packets. Multiple wireless links can use different wireless access technologies. Wireless access technologies include, but are not limited to, LTE and WLAN. The device 100 and its internal unit described in FIG. 6 execute the data sending method shown in FIG. 2, which will not be repeated here.

FIG. 7 illustrates a structure diagram of a data transmitting apparatus 100 according to an exemplary embodiment of the present invention. Compared with the data transmitting device 100 in the embodiment shown in FIG. 6, the data transmitting device 100 shown in FIG. 7 further includes a selecting unit 107 for selecting a coded data packet to be transmitted from a plurality of wireless links. Wireless links and wireless links that send auxiliary packets. Specifically, the selection unit 107 determines, based on at least one of the channel quality and load status of multiple wireless links, the length of the encoded data packet, and the quality of service QoS, the wireless link that transmits the encoded data packet and the Wireless link. In addition, in the embodiment shown in FIG. 7, the processing unit 103 is further configured to encode a data packet to be transmitted using a Turbo or LDPC encoding mechanism and puncture the encoded data packet to obtain a punctured encoded data packet and Kongbit. The punctured bits are stored in auxiliary data packets and sent out over the wireless link. The apparatus 100 and its internal unit described in FIG. 7 execute the data sending method shown in FIG. 3, which will not be repeated here.

FIG. 8 is a schematic structural diagram of a data receiving apparatus 200 according to an embodiment of the present invention. The data receiving device 200 according to the embodiment of the present application includes a receiving unit 201 that receives a coded data packet via a first wireless link of a plurality of wireless links, and simultaneously receives an auxiliary data packet via a second wireless link of the plurality of wireless links. Among them, the auxiliary data packet contains bits removed when encoding the data packet; and the decoding unit 203 decodes the encoded data packet, including discarding the auxiliary data packet if the decoding is successful; if the decoding fails, the auxiliary data packet is used to continue encoding the data Packet decoding. The apparatus 200 and its internal unit described in FIG. 8 execute the data receiving method shown in FIG. 4, which will not be repeated here.

FIG. 9 illustrates a structure diagram of a data receiving apparatus 200 according to an exemplary embodiment of the present invention. Compared with the data receiving device 200 shown in FIG. 8, the data receiving device 200 shown in FIG. 9 further includes a feedback unit 205 for not sending a negative answer NACK in the case where the decoding of the encoded data packet fails. , But wait for the auxiliary data packet; and if the decoding is successful, send a correct reply ACK. The feedback unit 205 is further configured to initiate a retransmission request when the waiting timeout occurs. The apparatus 200 and its internal unit described in FIG. 9 execute the data receiving method shown in FIG. 5, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are only schematic, for example, the division of units or modules is only a logical function division. In actual implementation, there may be another division manner. For example, multiple units or modules or components may be combined. Or it can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, modules or units, and may be electrical or other forms.

The units or modules described as separate components may or may not be physically separated, and the components displayed as units or modules may or may not be physical units or modules, that is, they may be located in one place, or they may be distributed to multiple units. Network unit or module. Some or all of the units or modules may be selected according to actual needs to achieve the objective of the solution of this embodiment.

In addition, each functional unit or module in each embodiment of the present application may be integrated into one processing unit or module, or each unit or module may exist separately physically, or two or more units or modules may be integrated into one Unit or module. The above-mentioned integrated unit or module can be implemented in the form of hardware or in the form of software functional unit or module.

When the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially a part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium. , Including a number of instructions to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method of each embodiment of the present application. The foregoing storage media include: U disks, Read-Only Memory (ROM), Random Access Memory (RAM), mobile hard disks, magnetic disks, or optical disks, and other media that can store program codes .

The above are only the preferred embodiments of the present application. It should be noted that, for those of ordinary skill in the art, without departing from the principles of the present application, several improvements and retouches can be made, and these improvements and retouches should also be viewed as The scope of protection of this application.

Claims

The data sending method for industrial applications is characterized in that it includes:

Obtain the data packets to be sent;

Processing the data packet to be sent by encoding and removing multiple bits to obtain an encoded data packet and an auxiliary data packet, wherein the auxiliary data packet includes the removed multiple bits; and

The encoded data packet is transmitted via a first wireless link among the plurality of wireless links, and the auxiliary data packet is transmitted via a second wireless link among the plurality of wireless links.
The method according to claim 1, wherein a length of the auxiliary data packet is smaller than a length of the encoded data packet.
The method according to claim 1, wherein processing the data packet to be sent by encoding and removing multiple bits comprises:

Turbo or LDPC coding mechanism is used to encode the data packet to be sent and puncture the encoded data packet to obtain a punctured encoded data packet and punctured bits.
The method according to claim 1, further comprising:

A wireless link that transmits the encoded data packet and a wireless link that transmits the auxiliary data packet are selected from the plurality of wireless links.
The method according to claim 4, wherein the sending of the encoded data is determined based on at least one of channel quality and load status of the plurality of wireless links, a size of the encoded data packet, and a quality of service. A wireless link for the packet and a wireless link for sending the auxiliary data packet.
The method according to any one of claims 1 to 5, wherein the plurality of wireless links use different wireless access technologies.
The method according to claim 6, wherein the wireless access technology comprises LTE and WLAN.
The data receiving method for industrial applications is characterized in that it includes:

Receiving an encoded data packet via a first wireless link in a plurality of wireless links, and receiving an auxiliary data packet via a second wireless link in the plurality of wireless links, wherein the auxiliary data packet is included in the encoded data packet Multiple bits removed at time; and

Decoding the encoded data packet includes:

If the decoding is successful, discard the auxiliary data packet;

If decoding fails, use the auxiliary data packet to continue decoding the encoded data packet.
The method according to claim 8, wherein decoding the encoded data packet further comprises:

If the decoding fails, do not send a negative answer NACK and wait for the auxiliary data packet; and

If the decoding is successful, a correct reply ACK is sent.
The method according to claim 9, characterized in that waiting for the auxiliary data packet comprises:

If the wait times out, a retransmission request is initiated.
The method according to any one of claims 8 to 10, wherein the multiple radio links use different radio access technologies.
The method according to claim 11, wherein the wireless access technology comprises LTE and WLAN.
The data sending device for industrial applications is characterized in that it includes:

An obtaining unit to obtain a data packet to be sent;

The processing unit processes the data packet to be sent by encoding and removing multiple bits to obtain an encoded data packet and an auxiliary data packet, wherein the auxiliary data packet includes the removed multiple bits;

The sending unit sends the encoded data packet via a first wireless link among the plurality of wireless links, and sends the auxiliary data packet via a second wireless link among the plurality of wireless links.
The apparatus according to claim 13, wherein a length of the auxiliary data packet is smaller than a length of the encoded data packet.
The apparatus according to claim 13, wherein the processing unit is further configured to:

The processing unit uses a Turbo or LDPC encoding mechanism to encode the data packet to be sent and punctures the encoded data packet to obtain a punctured encoded data packet and punctured bits.
The apparatus according to claim 13, further comprising:

The selecting unit selects, from the plurality of wireless links, a wireless link that sends the encoded data packet and a wireless link that sends the auxiliary data packet.
The apparatus according to claim 15, wherein the sending of the encoded data is determined based on at least one of channel quality and load status of the plurality of wireless links, a length of the encoded data packet, and a quality of service. A wireless link for the packet and a wireless link for sending the auxiliary data packet.
The apparatus according to any one of claims 13 to 17, wherein the plurality of wireless links use different wireless access technologies.
The apparatus according to claim 18, wherein the wireless access technology comprises LTE and WLAN.
The data receiving device for industrial applications is characterized in that it includes:

The receiving unit receives an encoded data packet via a first wireless link of a plurality of wireless links, and receives an auxiliary data packet via a second wireless link of the plurality of wireless links, wherein the auxiliary data packet is included in the encoded data. Multiple bits removed during packetization; and

The decoding unit, which decodes the encoded data packet, includes:

If the decoding is successful, discard the auxiliary data packet;

If decoding fails, use the auxiliary data packet to continue decoding the encoded data packet.
The device according to claim 20, further comprising: a feedback unit for not sending a negative answer NACK if the decoding fails, and waiting for the auxiliary data packet; and sending a correct answer ACK if the decoding is successful.
The apparatus according to claim 21, wherein the feedback unit is further configured to: if the waiting timeout expires, initiate a retransmission request.
The apparatus according to any one of claims 20 to 22, wherein the plurality of wireless links use different wireless access technologies.
The apparatus according to claim 23, wherein the wireless access technology includes LTE and WLAN.