Data collection method suitable for multi-hop wireless sensor network

A wireless sensor and data collection technology, applied in network topology, wireless communication, data exchange through path configuration, etc., can solve problems such as poor adaptability, high node density requirements, and high access control overhead.

Active Publication Date: 2009-06-24
XIDIAN UNIV
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  • Description
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects of the existing stateless implicit routing data collection method that require high node arrangement density, long idle listening time, large access control overhead, and poor adaptability, and use

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  • Data collection method suitable for multi-hop wireless sensor network
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  • Data collection method suitable for multi-hop wireless sensor network

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Embodiment Construction

[0092] The technical scheme of the present invention is described in further detail below with reference to accompanying drawing:

[0093] refer to figure 1 , the present invention is based on the WSNs network of monitoring and emergency reporting applications and proposes a high-energy-efficiency data collection method. Aiming at the characteristics of this type of application, the present invention establishes the following network model, and studies the performance effect of the present invention based on the network model.

[0094] The WSNs network nodes are randomly distributed in an L×L square area A with a strength ρ according to the Poisson process, and the WSNs network has the following properties:

[0095] (1) Nodes will not move after deployment;

[0096] (2) The base station SINK node is deployed at a fixed position (x, y) on one edge of the area A, and the equivalent communication radius R of the node is much smaller than the equivalent radius of the network cov...

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Abstract

The invention discloses a data collecting method applied to a multihop wireless sensor network, which belongs to the wireless communication network field and mainly solves the problems that the efficiency is low, the time lapse is big, and the network service life is short in prior network data collection. The data collecting steps include as following: executing clock synchronization to the local network nodes, and updating the local network information of the network nodes; dividing the network work time into a plurality of network interception periods; utilizing the updated localized network information to work out the interception signal channel probability of the nodes; executing interception at each network interception period according to the interception signal channel probability; executing data transmission according to the contest transmission nodes transmitted by the generating data; executing the data receiving according to the frames hearing the busy signal contest receiving node; and transmitting the data to the syntaxis nodes SINK used for collecting the data through multihops. The method has the advantages that the data collection is in time, and the nodes are high in efficiency and good in expansibility, thus being applicable for collecting data information in a large-scale wireless sensor network for monitoring emergency accidents.

Description

technical field [0001] The invention belongs to the field of wireless communication networks, and relates to a data collection method, which can be used in wireless sensor network application systems such as emergency monitoring and information reporting. Background technique [0002] With the rapid development of sensor technology, embedded computing technology and low-power wireless communication technology, it has become possible to produce miniature wireless sensors with sensing, wireless communication and information processing capabilities. These cheap, low-power sensor nodes are organized into a wireless network, which can cooperatively monitor and sense a variety of environmental information in its network coverage area, and transmit it to a remote base station for processing. Wireless Sensor Networks (WSNs for short) can obtain a large amount of detailed and reliable information under harsh environmental conditions, and can be widely used in national defense and mil...

Claims

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Application Information

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IPC IPC(8): H04W84/18H04L12/28
Inventor 李建东郑国强周志立李红艳贾媛
Owner XIDIAN UNIV
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