Wireless network data reliability transmission system

Abstract

The invention belongs to the technical field of data transmission, and discloses a wireless network data reliability transmission system. The transmission system comprises an access device, a field device, a wireless module, an application program, a wireless driver, a data receiving and filtering mechanism module, a dynamic channel adjustment mechanism module, a seamless roaming function module, a network node and a repeated data filtering module. According to the wireless network data reliable transmission system provided by the invention, through innovative designs such as introduction of a dynamic channel adjustment mechanism, optimization of data receiving and filtering, support of seamless roaming, enhancement of data encryption and the like, the anti-interference capability, the certainty and the low-delay characteristic of data transmission are remarkably improved; the system not only meets the strict requirements of the intelligent manufacturing field for the high-real-time and high-reliability wireless communication technology, but also reduces the complexity and maintenance cost of the system through the modular design, and provides solid technical support for flourishing development of intelligent manufacturing.

Description

Technical Field

[0001] The invention belongs to the technical field of data transmission, and in particular relates to a wireless network data reliability transmission system. Background Art

[0002] With the vigorous development of intelligent manufacturing in my country, the high real-time and high reliability industrial wireless WIA-FA technology has been widely used in many key industries. The MAC layer of the WIA-FA network technology, relying on the access mechanism based on time division multiple access (TDMA), effectively ensures the determinism and low latency characteristics of the communication cycle, which is very suitable for the stringent requirements of industrial control applications. However, during the wireless network data transmission process, the wireless signal is susceptible to interference, and this potential risk directly threatens the reliability of data transmission. Although the TDMA scheduling strategy has been widely adopted in the current wireless network data transmission, there is still a lack of comprehensive and effective solutions to improve the reliability of data transmission.

[0003] In view of this, the present invention innovatively designs a wireless network data reliability transmission solution, which aims to significantly improve the anti-interference capability and overall reliability during data transmission by optimizing the transmission mechanism and strategy, and provide more solid technical support for wireless communication technology in the field of intelligent manufacturing. Summary of the invention

[0004] The object of the present invention is to provide a wireless network data reliability transmission system to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a wireless network data reliability transmission system, the transmission system includes: access devices (A and B), field devices (M and N), wireless modules, applications, wireless drivers, data receiving and filtering mechanism modules, dynamic channel adjustment mechanism modules, seamless roaming function modules, network nodes and duplicate data filtering modules;

[0006] Access device: Each access device is configured with several wireless modules, one of which is designated as a beacon sending module, which is used to periodically send beacon frames on a designated channel. The beacon frames contain the working channel information of other wireless modules.

[0007] Field device: capable of receiving and parsing the beacon frame, and setting the working channel of its internal wireless module according to the information in the beacon frame;

[0008] The access device and the field device each have at least two wireless modules, support data transmission via the wireless modules, and are connected to other devices via a wired network port.

[0009] Preferably, the wireless modules have two functions:

[0010] Function 1: Send upper layer data wirelessly;

[0011] Function 2: Receive all data of this channel in Monitor mode and report it to the system software.

[0012] Preferably, it also includes an application running in a wireless network data transmission system, which supports obtaining data from a wired network port through a RAW type socket and adding private information to the data, wherein the private information includes but is not limited to a data packet identification device number, a device ID number, and a data packet sequence number.

[0013] Preferably, it also includes a wireless driver for receiving a data packet with private information sent by an application, completing information filling of the data packet, and transferring the data packet to a data transmission interface corresponding to each wireless module for wireless transmission.

[0014] Preferably, it also includes a data receiving and filtering mechanism module, which receives data through a Monitor interface, filters the data packet type according to the device number, and performs duplicate filtering of the data packet based on the device ID number and the data packet sequence number.

[0015] Preferably, a dynamic channel adjustment mechanism module is also included, and the access device or the management device can dynamically adjust the working channel between the access device and the field device through the beacon frame according to the wireless environment status.

[0016] Preferably, the system supports seamless roaming of field devices in the network, because the communication mode is implemented as one send and multiple receive, and there is no direct communication link connection at the physical layer or data link layer between the field device and the access device.

[0017] Preferably, when there are multiple access devices in the network, the data received by the multiple access devices need to be centrally processed by the same network node, and the network node is responsible for filtering duplicate data packets; when there is only one access device in the network, private information can be added at the starting position after the MAC Header, and filtering of duplicate data packets can be completed in the driver or firmware.

[0018] Preferably, the network node is also responsible for inserting private information at the start position of the TCP / UDP pay-l oad data to ensure the integrity and traceability of the data during network transmission.

[0019] Preferably, a security mechanism is also included for encrypting and decrypting the wirelessly transmitted data to ensure the security and confidentiality of the data during transmission.

[0020] The beneficial effects of the present invention are as follows:

[0021] The wireless network data reliability transmission system proposed in the present invention significantly improves the anti-interference ability, determinism and low latency characteristics of data transmission by introducing innovative designs such as dynamic channel adjustment mechanism, optimizing data reception and filtering, supporting seamless roaming, and strengthening data encryption, thereby ensuring the integrity, traceability and security of data during network transmission.

[0022] The system not only meets the stringent requirements of the intelligent manufacturing field for high real-time and high-reliability wireless communication technology, but also reduces system complexity and maintenance costs through modular design, providing solid technical support for the vigorous development of intelligent manufacturing. Specifically, the dynamic channel adjustment mechanism effectively avoids the source of wireless signal interference and ensures the stability of data transmission; the data reception and filtering mechanism prevents the transmission of duplicate data packets and reduces the risk of network congestion and data errors; the seamless roaming function enhances the flexibility and scalability of the network; and data encryption processing ensures the security and confidentiality of data transmission. The system has shown significant advantages in improving data transmission reliability, reducing latency, enhancing network flexibility, and ensuring data security. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the system of the present invention;

[0024] Figure 2 This is a flow chart of an example of the system of the present invention. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figure 1 to Figure 2 As shown, an embodiment of the present invention provides a wireless network data reliability transmission system, which includes: access devices (A and B), field devices (M and N), wireless modules, applications, wireless drivers, data receiving and filtering mechanism modules, dynamic channel adjustment mechanism modules, seamless roaming function modules, network nodes and duplicate data filtering modules;

[0027] Access device: Each access device is configured with several wireless modules, one of which is designated as a beacon sending module, which is used to periodically send beacon frames on a designated channel. The beacon frames contain the working channel information of other wireless modules.

[0028] Field device: capable of receiving and parsing the beacon frame, and setting the working channel of its internal wireless module according to the information in the beacon frame;

[0029] There are at least two access devices and field devices, and they support data transmission through wireless modules and are connected to other devices through wired network ports.

[0030] Wherein, the wireless modules have two functions, namely:

[0031] Function 1: Send upper layer data wirelessly;

[0032] Function 2: Receive all data of this channel in Monitor mode and report it to the system software.

[0033] It also includes an application running in a wireless network data transmission system, which supports obtaining data from a wired network port through a RAW type socket and adding private information to the data, wherein the private information includes but is not limited to a data packet identification device number, a device ID number, and a data packet serial number.

[0034] It also includes a wireless driver for receiving a data packet with private information sent by an application, completing information filling of the data packet, and transferring the data packet to a data transmission interface corresponding to each wireless module for wireless transmission.

[0035] It also includes a data receiving and filtering mechanism module, which receives data through the Monitor interface, filters the data packet type according to the device number, and performs duplicate filtering of the data packet based on the device ID number and the data packet sequence number.

[0036] It also includes a dynamic channel adjustment mechanism module, and the access device or management device can dynamically adjust the working channel between the access device and the field device through the beacon frame according to the wireless environment status.

[0037] The system supports seamless roaming of field devices in the network, because the communication mode is realized as one send and multiple receive, and there is no direct communication link connection at the physical layer or data link layer between the field device and the access device.

[0038] Among them, when there are multiple access devices in the network, the data received by multiple access devices must be centrally processed by the same network node, and the network node is responsible for filtering duplicate data packets; when there is only one access device in the network, private information can be added at the starting position after the MAC Header, and duplicate data packets can be filtered in the driver or firmware.

[0039] The network node is also responsible for inserting private information at the start position of the TCP / UDP pay-l oad data to ensure the integrity and traceability of the data during network transmission.

[0040] It also includes a security mechanism for encrypting and decrypting wirelessly transmitted data to ensure the security and confidentiality of data transmission.

[0041] like Figure 2 As mentioned above, for example:

[0042] AP1, AP2 and AP3 devices each have two wireless modules; the device network ports are connected to the gateway respectively.

[0043] STA1, STA2 and STA3 devices each have two wireless modules; the device network ports are connected to the PC respectively.

[0044] The network consists of a gateway, AP, STA and PC.

[0045] The AP specifies one of the wireless modules to periodically send a beacon frame on channel 1. The beacon frame carries the working channel of another wireless module as channel 6.

[0046] STA receives the beacon frame sent by AP and parses it, and configures its wireless module channels to 1 and 6 respectively.

[0047] Uplink data: data from a STA connected to a PC, sent to a PC connected to a gateway.

[0048] (1) PC data is transmitted to the STA network port. The upper layer application of STA obtains data through RAW type socket and adds private information. The data is transmitted to the wireless module driver. The wireless module driver processes the data packet again and sends it to each wireless device.

[0049] (2) If the STA is within the coverage of AP1 and AP2, the data sent by the STA will be received by the wireless modules corresponding to AP1 and AP2. AP1 and AP2 filter the duplicated data packets in their respective wireless drivers and upload them to the gateway device. The gateway device further filters the data packets according to the device ID and serial number, and sends them to the PC device after filtering.

[0050] Downlink data: Data from the gateway connected to the PC device, sent to the PC device corresponding to the STA.

[0051] (1) PC data is sent to the gateway network port. The application running on the gateway device obtains the data, adds private information, and sends it to each connected AP device. The AP device sends the data through the wireless module.

[0052] (2) The wireless module of the STA device will receive redundant data packets, filter the data using the device ID and data packet sequence number, and upload it to the PC device.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wireless network data reliability transmission system, characterized by: The transmission system is composed of access equipment, field equipment, wireless module, application program, wireless driver, data receiving and filtering mechanism module, dynamic channel adjustment mechanism module, seamless roaming function module, network node and duplicate data filtering module; Access device: Each access device is configured with several wireless modules, one of which is designated as a beacon sending module, which is used to periodically send beacon frames on a designated channel. The beacon frames contain the working channel information of other wireless modules. Field device: capable of receiving and parsing the beacon frame, and setting the working channel of its internal wireless module according to the information in the beacon frame; There are at least two access devices and field devices, and they support data transmission through wireless modules and are connected to other devices through wired network ports.

2. A wireless network data reliability transmission system according to claim 1, characterized in that: The wireless modules have two functions: Function 1: Send upper layer data wirelessly; Function 2: Receive all data of this channel in Monitor mode and report it to the system software.

3. A wireless network data reliability transmission system according to claim 1 or 2, characterized in that: It also includes an application running in a wireless network data transmission system, which supports obtaining data from a wired network port through a RAW type socket and adding private information to the data, wherein the private information includes but is not limited to a data packet identification device number, a device ID number, and a data packet sequence number.

4. A wireless network data reliability transmission system according to claim 3, characterized in that: It also includes a wireless driver for receiving a data packet with private information sent by an application, completing information filling of the data packet, and transferring the data packet to a data transmission interface corresponding to each wireless module for wireless transmission.

5. A wireless network data reliability transmission system according to claim 1, characterized in that: It also includes a data receiving and filtering mechanism module, which receives data through the Monitor interface, filters the data packet type according to the device number, and performs duplicate checking and filtering of the data packet based on the device ID number and the data packet sequence number.

6. A wireless network data reliability transmission system according to claim 1, characterized in that: It also includes a dynamic channel adjustment mechanism module, and the access device or management device can dynamically adjust the working channel between the access device and the field device through the beacon frame according to the wireless environment status.

7. A wireless network data reliability transmission system according to claims 1-6, characterized in that: The system supports seamless roaming of field devices in the network because the communication method is implemented as one send and multiple receive, and there is no direct communication link connection at the physical layer or data link layer between the field device and the access device.

8. A wireless network data reliability transmission system according to claims 1-7, characterized in that: When there are multiple access devices in the network, the data received by the multiple access devices must be centrally processed by the same network node, which is responsible for filtering duplicate data packets. When there is only one access device in the network, private information can be added to the starting position after the MAC Header, and duplicate data packet filtering can be completed in the driver or firmware.

9. A wireless network data reliability transmission system according to claim 8, characterized in that: The network node is also responsible for inserting private information at the beginning of the TCP / UDP payload data to ensure the integrity and traceability of the data during network transmission.

10. A wireless network data reliability transmission system according to claims 1-9, characterized in that: It also includes a security mechanism for encrypting and decrypting wirelessly transmitted data to ensure security and confidentiality during data transmission.

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