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Centralized construction method for Zigbee homogeneous tree-type wireless sensor network

A technology of wireless sensor network and construction method, applied in the field of centralized construction of Zigbee isomorphic tree wireless sensor network

Inactive Publication Date: 2011-06-29
NANJING HANZHIXIAN ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The problem now is: how to build a tree topology according to the actual distribution of nodes, so that and to describe
This problem is an NP-Hard problem. Among the various existing spanning tree algorithms, there is no algorithm that can be directly used to solve this problem.

Method used

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  • Centralized construction method for Zigbee homogeneous tree-type wireless sensor network
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  • Centralized construction method for Zigbee homogeneous tree-type wireless sensor network

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Embodiment Construction

[0040] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0041] as attached figure 1 Shown, the centralized construction method of Zigbee homogeneous tree type wireless sensor network of the present invention follows the steps:

[0042] Step 10, the coordinator obtains the neighbor relationship graph of the nodes in the network ;

[0043] In order to more clearly illustrate the process of obtaining the neighbor relationship graph of the present invention, the following uses figure 2 The wireless sensor network shown in is taken as an example to illustrate, figure 2 All the sensor nodes in , use the same device, where node 1 acts as the coordinator, and the rest of the nodes act as both routers and terminal nodes. The directed connection lines in the figure indicate that a node can receive packets from another node. Since the same equipment is used and the transmission power of the equipment is the sam...

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Abstract

The invention relates to a centralized construction method for a Zigbee homogeneous tree-type wireless sensor network, and belongs to the technical field of networking of wireless sensor networks. According to the distribution of nodes and the neighbor relationship between the nodes, the invention looks for a tree-type topology structure with the minimized number of child nodes under the given depth condition. Compared with the prior art, the centralized construction method for the Zigbee homogeneous network tree-type wireless sensor network has the advantages that: firstly, the automatic networking function is realized, and a user does not need to manually construct a tree-type network according to the distribution of the nodes; secondly, the load of the nodes is reduced and the existingtime of the network is prolonged due to the minimization of the number of the child nodes; and thirdly, the delay that a data packet is forwarded from a leaf node to a coordinator is restrained due to limitation to the depth of the network.

Description

technical field [0001] The invention relates to a networking technology of a wireless sensor network, in particular to a centralized construction method of a Zigbee isomorphic tree-type wireless sensor network. Background technique [0002] The wireless sensor network is composed of a large number of cheap sensor nodes deployed in the detection area, and forms a multi-hop self-organizing network system through wireless communication. Its purpose is to cooperatively perceive, collect and process the information of sensing objects in the network coverage area. , and sent to observers or controllers, has a wide range of applications. Typical examples are: medical field, modern agriculture field, intelligent transportation field and industrial control field, etc. [0003] For applications that require continuous monitoring, wireless sensor networks usually adopt a tree topology. However, for a tree network, if the depth is large, the time for data packets to be forwarded from ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W84/18
Inventor 吴金娇谢胜东李振
Owner NANJING HANZHIXIAN ELECTRONICS TECH
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