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Network topology building method

A network topology and network technology, applied in the field of communication, can solve the problems of poor data transmission flexibility, small scope of application, and only focus on data transmission in the upload direction, so as to reduce broadcast storms, overcome small scope of application, and overcome the problems of poor data transmission flexibility Effect

Inactive Publication Date: 2014-04-30
JIANGSU LINK SENSOR TECH
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Problems solved by technology

[0003] Although there are some methods for spanning trees in the field of sensor networks, they tend to only focus on data transmission in the upload direction
[0004] In the process of realizing the present invention, the inventor found that there are at least defects such as poor data transmission flexibility and small application range in the prior art

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Embodiment Construction

[0042] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0043] According to an embodiment of the present invention, such as figure 1 with figure 2 As shown, a method for establishing a network topology is provided.

[0044] In this embodiment, Axonweb's topology control builds bidirectional trees (BiTrees). In the entire network, the sensor nodes that join the network (in the topology table) and can transmit data are called tree nodes; the nodes that have not yet joined the network are called non-tree nodes. The gateway initiates the topology establishment process by broadcasting a heartbeat message (HEARTBEAT). Non-tree nodes compete to join the network (tree). When a node joins the network, it sends out its own he...

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Abstract

The invention discloses a network topology building method. The network topology building method mainly includes the steps that sensor nodes with the data transmission function are added into a preset network topology table and called tree nodes; sensor nodes which have not been added into the network topology table yet are called non-tree-nodes; the network topology building process is initialized by a gateway through the method of broadcasting heartbeat messages of the tree nodes; after the non-tree-nodes are competitively added into the network topology table based on the initialization result of the network topology building process, more sensor nodes are collected through the method of sending out heartbeat messages of the sensor nodes to build a needed network topology. The network topology building method can overcome the defects of poor data transmission flexibility, small application range and the like of the prior art and can achieve the advantages of being good in data transmission flexibility and large in application range.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a method for establishing a network topology. Background technique [0002] Topology control is used to maintain a robust network gateway-based data collection hierarchy (tree). This topology control mechanism ensures that nodes can independently handle network changes, including link degradation and node failures. [0003] Although there are some methods for spanning trees in the field of sensor networks, they tend to only focus on data transmission in the upload direction. [0004] During the process of realizing the present invention, the inventors found that the prior art at least has defects such as poor data transmission flexibility and narrow application range. Contents of the invention [0005] The object of the present invention is to propose a method for establishing a network topology to achieve the advantages of good data transmission flexibility and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46
Inventor 徐葳
Owner JIANGSU LINK SENSOR TECH
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