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Data aggregation method used for wireless sensor networks

A wireless sensor and data aggregation technology, applied in wireless communication, wireless communication services, services based on specific environments, etc., can solve a large number of additional control expenses and other problems, to reduce the number and number of transmissions, reduce control expenses, and extend the network The effect of longevity

Active Publication Date: 2015-09-23
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing data aggregation algorithm will generate a large amount of additional control expenses, the present invention provides a data aggregation method for wireless sensor networks

Method used

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  • Data aggregation method used for wireless sensor networks
  • Data aggregation method used for wireless sensor networks

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Embodiment Construction

[0014] A data aggregation method for a wireless sensor network, comprising the following steps:

[0015] Initialization of the data aggregation tree: when the aggregation node enters the network, each aggregation node selects the corresponding virtual aggregation node, and the virtual aggregation node can directly send data to the corresponding aggregation node, with the virtual aggregation node as the root node, to the virtual aggregation node The hop count of the node is the routing index, and the data aggregation tree is established. Each data aggregation tree is a scope, and each aggregation node corresponds to a scope. The data aggregation tree with the virtual aggregation node u as the root node is set as Tu, Tu is the scope of sink node j, and Tu(i,u) represents the number of hops (or distance) from node i to virtual sink node u in Tu;

[0016] Select a new virtual sink node: when the sink node j moves a certain distance beyond the communication range of the original vi...

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Abstract

The invention belongs to the wireless communication field, and concretely provides a data aggregation method used for wireless sensor networks (WSN). The method comprises the steps of: initializing a data aggregation tree, selecting new virtual aggregation nodes, updating the data aggregation tree and routing data, wherein data aggregation tree updating includes two cases: in one case, after aggregation nodes move, the newly selected virtual aggregation nodes belong to the action scope of the aggregation nodes; in the other case, after the aggregation nodes move, the newly selected virtual aggregation nodes do not belong to the action scope of the aggregation nodes. In an updating process, the data aggregation tree utilizes spatial correlation among nodes to update the routing of partial nodes, thereby forming an approximately shortest path accessing to corresponding aggregation nodes, so as to reduce control expenditure. In the aggregation node moving process, the data aggregation method updates the data aggregation tree, and effectively reduces control expenditure of WSN.

Description

technical field [0001] The invention belongs to the field of wireless communication, in particular to a data aggregation method for a wireless sensor network. Background technique [0002] The introduction of mobile aggregation nodes in Wireless Sensor Networks (WSN) will bring many benefits, for example, it can reduce or even eliminate the problem of unbalanced load of nodes in the network, so that some nodes will not fail due to excessive energy consumption. die quickly, thus improving the performance of the network. However, the movement of the aggregation node will cause the topology of the network to change frequently, so it is necessary to construct a new network topology by sending control packets. Due to the limited energy of nodes in the network, sending or forwarding too many control packets will consume a lot of energy and reduce the life of nodes. Therefore, data aggregation algorithms that effectively reduce control overhead are crucial. [0003] Currently, t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/00H04W40/24
CPCH04W4/38H04W40/248
Inventor 赵菊敏唐清明李灯熬
Owner TAIYUAN UNIV OF TECH