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Data collection method

A technology of data collection and order, applied in advanced technology, network planning, electrical components, etc., can solve problems such as the movement trajectory of sink nodes and different node densities that cannot be reflected, so as to improve network survival time, reduce node energy consumption, improve The effect of the packet delivery rate

Active Publication Date: 2016-09-21
UNIV OF SHANGHAI FOR SCI & TECH
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Problems solved by technology

[0007] Due to the random distribution of sensor nodes in wireless sensor networks, resulting in different node densities, in order to adapt to different node densities in different regions, use figure 1 The standard Hilbert curve shown in can no longer reflect the movement trajectory of the sink node

Method used

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Embodiment

[0031] As mentioned above, since the Hilbert curve has the best result in preserving locality, the present invention uses the Hilbert curve as the action track of the mobile sink, so that the sink node moves according to the Hilbert curve, and According to the node density of the wireless sensor network, an adaptive Hilbert curve can be formed to traverse the entire wireless sensor network, and the data collection work of the sensor nodes in the network can be completed.

[0032] refer to figure 2 , the present invention provides a data collection method, which is applied to a wireless sensor network, wherein the data collection method plans a data collection route of a mobile node based on a Hilbert curve, and the method includes:

[0033] S101. Divide the wireless sensor network into multiple sub-areas;

[0034] S102. Determine the Hilbert curve order of each sub-area according to the density of wireless sensor nodes in each sub-area;

[0035] S103. If the two adjacent su...

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Abstract

The invention discloses a data collection method. The method is applied to a wireless sensor network. According to the data collection method, data collection routes of a mobile node are planned based on a Hilbert curve. The method comprises the steps of dividing the wireless sensor network into multiple subareas; determining the Hilbert curve order of each subarea according to the density of wireless sensor network nodes in each subarea; carrying out boundary processing to the data collection routes of the two adjacent subareas if two adjacent subareas passed by the data collection advancing route of the mobile node have different Hilbert curve orders, thereby enabling the data collection routes of the two adjacent subareas to become a connected curve. According to the method, the data collection routes of the mobile node can be adjusted according to the density of the nodes, thereby adapting to a current network condition; and therefore, the node energy consumption is reduced, the network lifetime is improved, and the packet delivery rate is improved.

Description

technical field [0001] The invention relates to a wireless sensor network, in particular to a data collection method of a mobile node in the wireless sensor network. Background technique [0002] With the development of communication and Internet of Things technology, wireless sensor network (wireless sensor network) has become an indispensable part of today's society. Wireless sensor networks are widely used in industry, environment, medical treatment, military and other fields. When the wireless sensor network collects data, the sensor nodes first collect relevant data, and then transmit the collected data to the base station (Base Station) node, so that the manager of the sensor network can analyze and use the data. When the wireless sensor network node sends the collected data to the base station, it is limited by the limited energy and communication range, and cannot directly communicate with the base station node. Therefore, a sink node is introduced in the sensor ne...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/18H04W84/18
CPCH04W16/18H04W84/18Y02D30/70
Inventor 何杏宇杨桂松刘帅
Owner UNIV OF SHANGHAI FOR SCI & TECH
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