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Wireless virtual device protocol-based industrial wireless data transmission method

A data transmission method and virtual device technology, applied in the field of industrial wireless data transmission based on the wireless virtual device protocol, to achieve the effect of solving low reliability and improving reliability

Inactive Publication Date: 2012-06-06
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of information caching, multi-pathing and other methods for some key point devices still cannot solve the single point of failure problem

Method used

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  • Wireless virtual device protocol-based industrial wireless data transmission method
  • Wireless virtual device protocol-based industrial wireless data transmission method
  • Wireless virtual device protocol-based industrial wireless data transmission method

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Experimental program
Comparison scheme
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Embodiment Construction

[0033] The present invention will be further described below in conjunction with accompanying drawing:

[0034] Step 1: Set the wireless virtual device protocol WVDP, such as figure 2 As shown, the WVDP protocol consists of 8 fields, which are: 1. Version field, with a size of 4 bits; 2. Type field, with a size of 4 bits; 3. Virtual device group ID field, with a size of 1 4. The virtual device field, the size is 1 byte; 5. The priority field, the size is 1 byte; 6. The notification interval field, the size is 2 bytes; 7. The check field, the size 1 byte; 8. Payload field, the field is variable length;

[0035] Step two: image 3 It is the hot standby topology structure diagram of the present invention. When the device is running in the initialization state, it receives broadcast information, and the timer starts counting. If no WVDP message is received within the five passing times, the device sets its own priority and sets its own priority. When the VDID is 0, it enters t...

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Abstract

The invention discloses a wireless virtual device protocol-based industrial wireless data transmission method, which belongs to the field of computer network communication. In the invention, a wireless virtual device protocol WVDP used in an industrial wireless network environment is disclosed and designed. In a virtual device group, one or more devices provide a redundancy backup function; undera normal condition, a master device is responsible for receiving and processing data packets in a network; and when the master device cannot work normally, the tasks of the master device are taken over by the other devices to continue to provide network services. Therefore, the problem of the single point of failure in the industrial wireless network environment is solved and the reliability of an industrial wireless network is greatly improved.

Description

technical field [0001] The invention belongs to the field of computer network communication, in particular to an industrial wireless data transmission method based on a wireless virtual device protocol. Background technique [0002] The industrial wireless network environment is harsh, and the working environment of the equipment is also relatively harsh. The reliability of the normal operation of a single device is greatly reduced, and the availability of the entire network is also affected. Therefore, the industrial wireless network environment is more demanding than the wireless network environment used in daily life. It has higher reliability and fault tolerance. [0003] In the traditional working mode, such as figure 1 As shown in the network topology, this topology has a single point of failure problem. If there is a problem with the device on the middle layer, all the downlink devices will not work normally. In order to ensure the high availability of the entire ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W80/00
Inventor 王兴伟易秀双刘小锋刘军吴炜鑫王宇
Owner NORTHEASTERN UNIV LIAONING