Flow control method between wireless mesh network-based distributed network control systems

A technology of distributed network and control system, applied in the field of coexistence of wireless mesh network and control network, and flow control, it can solve the problems of limited data transmission mode, network congestion, and narrow scope of application, and achieve the effect of optimal exponential attenuation of congestion probability.

Inactive Publication Date: 2014-01-15
SHENZHEN TINNO WIRELESS TECH
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Problems solved by technology

[0006] The technical problems to be solved by the present invention are: to overcome the problems of single function, narrow scope of application and limited data transmission mode of the network control system; to solve the problems of network congestion and balance of control flow among distributed network control system modules, such figure 2 shown

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  • Flow control method between wireless mesh network-based distributed network control systems
  • Flow control method between wireless mesh network-based distributed network control systems
  • Flow control method between wireless mesh network-based distributed network control systems

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Embodiment Construction

[0025] Below according to accompanying drawing and embodiment the present invention will be described in further detail:

[0026] The main purpose of the present invention is to consider a distributed network control system based on WMN, where there is both data exchange and control flow transmission among distributed modules. Such as figure 2 As shown, in order to effectively transmit and control business flow among distributed network control system modules, we set up a method to dynamically adjust business flow, and then control the congestion probability of business flow.

[0027] To achieve the above object, the technical scheme of the present invention is as follows:

[0028] The first step, assuming that the system is initially in a zero-queue state, when the length of the queue does not exceed g when the system is running, the arrival rate of the queue at this time, that is, the input rate is λ 1 .

[0029] In the second step, as the queue length grows, when it exce...

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Abstract

The invention provides a flow control method between wireless mesh-based distributed network control systems. In the method, the transmission quality of data is improved by changing the traditional network control system structure; by adopting a wireless mesh network transmission control signal and a sampling signal, the method ensures that the whole control network has higher fault-tolerant capability and mesh connectivity, flexible networking diversity and higher self manageability; the control capability of a wireless mesh network on the whole network during business flow transmission is improved; and by adjusting the difference of different data queue thresholds between wireless mesh-based distributed network control system modules, the balance of control flow rate and business flow congestion rate under different conditions is realized. The invention has the advantages of strengthening the control capability on the business flow for the single distributed network module, ensuring the diversity and reliability of the transmission path of a control signal and a sampling signal, realizing the aim of obtaining optimal exponential decay congestion probability on any lower control rate for the data transmission between the distributed network modules and improving the utilization ratio of network resources.

Description

technical field [0001] The invention relates to the technical field of communication and the field of network control, in particular to the coexistence of a wireless mesh network and a control network, and flow control. Background technique [0002] Network Control System (NCS) is a new field formed by the development of control technology. Its appearance replaces the point-to-point connection of control components in the traditional control system, realizes the distribution and networking of on-site device control, and also strengthens the connection between on-site control and upper management, and has information resources that can be shared, efficient, and flexible. And many other advantages. However, in such an open network control system, there will inevitably be problems of information exchange and sharing between the controller and the intelligent devices such as sensors and actuators of the remote control object through the network. However, due to the limitations...

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H04W28/10
Inventor胡致远周建林治学亮姜建伦田逢春袁研根胡松华其他发明人请求不公开姓名
OwnerSHENZHEN TINNO WIRELESS TECH