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Wireless meshed network broadcast communication method facing to industry monitoring application

A technology of wireless mesh network and broadcast communication, which is applied in the field of broadcast communication in wireless mesh network. The effect of saving energy

Inactive Publication Date: 2008-05-14
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Recently, some people have proposed to reduce the broadcast communication overhead by adding access points dedicated to broadcasting for wireless Mesh networks, but obviously it needs to add additional access points, which will increase network operating costs and the effect is not ideal

Method used

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  • Wireless meshed network broadcast communication method facing to industry monitoring application
  • Wireless meshed network broadcast communication method facing to industry monitoring application

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Experimental program
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Embodiment Construction

[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0015] The present invention has utilized the characteristic of the network information transmission mode of industrial monitoring application, according to the wireless Mesh network (network structure diagram such as figure 1 As shown), the inherent dynamic spanning tree with the gateway device as the root improves the traditional broadcast strategy: first, all leaf nodes do not forward any broadcast messages; second, non-leaf nodes only need to forward messages from The broadcast message of its parent node or child node. details as follows:

[0016] When a node receives a broadcast message, it needs to decide two things (the process is as follows: figure 2 shown):

[0017] 1. Whether to receive the message

[0018] a) If the non-repeated broadcast message is received;

[0019] b) Otherwise, do not receive the message;

[0020] 2. Whet...

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Abstract

The invention provides a wireless Mesh network broadcasting communication method oriented to the industrial monitoring application. A dynamic spanning tree is built and maintained in the network according to the upstream routing and the diffusion of the broadcast message is controlled and restrained by utilizing the dynamic spanning tree: all the leaf nodes on the spanning tree do not need to forward any broadcast message, and the nodes which have the parent nodes and child nodes only need to forward the broadcast message from the parent nodes or child nodes. After the broadcasting method provided in the invention is adopted, the broadcast message is dispersed under a certain restrain, thus firstly greatly lowering the network load and the packet collision and saving the broadcasting communication overhead, and secondly eliminating the unnecessary packet forwarding and reducing the retransmission times of the packet. Therefore, the energy of the field equipment is saved.

Description

technical field [0001] The invention belongs to the field of wireless network communication, in particular to a method for realizing broadcast communication in a wireless mesh (Mesh) network oriented to industrial monitoring applications. Background technique [0002] In recent years, with the rapid development of microprocessor technology and low-energy wireless communication technology, wireless network technology, which has been successful in the commercial field, has begun to enter the field of industrial control and become a new growth point for industrial automation products in the future. Obviously, in terms of configuration, installation, modification and expansion, the cost of wireless networks is lower than that of wired networks; moreover, compared to star and tree topologies, Mesh networks have high reliability, high scalability, and larger Throughput and better balance of network energy consumption. Therefore, wireless Mesh network technology will become a main...

Claims

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Application Information

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IPC IPC(8): H04L12/18H04L12/58H04L29/08
Inventor 于海斌曾鹏李邦祥王军徐皑冬杨志家
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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