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Mobile sink data collection method based on greedy path

A data acquisition and node technology, applied in electrical components, wireless communication, network topology, etc., can solve problems such as long-term and urgent data that cannot guarantee real-time requirements, achieve balanced network energy consumption, and avoid "hot zone" effect , the effect of prolonging the life of the network

Inactive Publication Date: 2014-03-05
ANHUI UNIV OF SCI & TECH
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Problems solved by technology

The optimal Hamiltonian path can guarantee the lowest overall cost for mobile sinks to access each cluster head, but it takes a long time to complete a traversal collection, and cannot guarantee its real-time requirements for urgent data
[0005] In the practical application of WSN, some information, such as monitoring data periodically uploaded by sensors in environmental monitoring, allows a certain degree of delay

Method used

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  • Mobile sink data collection method based on greedy path
  • Mobile sink data collection method based on greedy path
  • Mobile sink data collection method based on greedy path

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Embodiment Construction

[0033] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. The specific embodiments described here are only used to explain the present invention, not to limit the present invention. The invention can also be applied in other different example embodiments.

[0034] figure 1 Represents the schematic diagram of the greedy path of the mobile sink node in the present invention, wherein ● represents the cluster head node, ◎ represents the mobile sink node, and ○ represents the general sensor node, and the greedy path is the cluster head node from the cluster head of the team to the cluster head of the tail of the team Sequence, the mobile sink node constantly moves back and forth between the head and the tail of the team, and accepts the message sent by the cluster head node. Before the data source cluster head node sends data, it first determines the communication radius with the ...

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Abstract

The invention relates to a WSN of a mobile sink and a mobile sink data collection method based on a greedy path. The WSN comprises one mobile sink node and more than two sensor nodes. The method comprises the steps that the WSN is divided into a plurality of clusters with the balanced sizes; the mobile sink node determines one greedy path for accessing the clusters in sequence; the mobile sink accesses all cluster nodes repeatedly by means of the determined path and collects signals; the signals of the cluster nodes are transmitted to the mobile sink in one-hop or multi-hop mode through the adjacent clusters in the path; in a data collection process, a timer mechanism is adopted for avoiding processing of repeated data, and energy consumption of the sensor nodes is reduced. According to the method, time delay of data collection is shortened, energy consumption of a network is balanced, and service life of the network is prolonged.

Description

technical field [0001] The invention relates to a wireless sensor network (Wireless Sensor Networks, WSN), in particular to a data collection method of a WSN using a mobile sink node. Background technique [0002] A typical WSN is mainly composed of a large number of sensor nodes (sensor) and sink nodes (sink) with perception capabilities. The sensor transmits information to the sink through a single hop or multiple hops. When the sink node is fixed, the near-end sensor of the sink node has to forward a large amount of information from the remote sensor, resulting in much greater energy consumption than the remote sensor, forming a "hot spot" problem and shortening the life of the WSN. The introduction of the mobile sink solves the problem of "hot spots": under the control of the network, the mobile sink actively visits the sensor nodes to collect data, avoiding the concentration of WSN energy consumption in local areas, balancing the energy consumption of the network, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/02H04W84/18
Inventor 胡长俊李鑫韩迎鸽袁树杰
Owner ANHUI UNIV OF SCI & TECH
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