Cluster Head and Sensor Nodes in Wireless Sensor Networks

Abstract

The invention provides a cluster head node and sensor nodes in a wireless sensor network. The wireless sensor network is of a clustered hierarchical structure, and each cluster network includes the cluster head node and several sensor nodes; the cluster head node is used for clustering each sensor node according to the signal strength of each sensor node in the cluster network through an ant colony clustering algorithm; and taking a sensor node which has the most residual energy in each cluster as a relay nodes of the cluster so that the relay node receives acquired data of other sensor nodesin the cluster and then generates data and reports the data to the cluster head node. According to the cluster head node provided by the embodiment of the invention, under the condition of existing deployment number and positions of network nodes, by analyzing the environmental correlation and reducing the data transmission distance, the energy consumption is reduced, and the interference caused by data collision in the network is reduced.

Description

technical field [0001] The present invention relates to the technical field of wireless sensor networks, more specifically, to a cluster head node and a sensor node in a wireless sensor network. Background technique [0002] Due to the characteristics of self-organization, low energy consumption, convenient configuration, and low cost, wireless sensor networks are widely used in various information collection scenarios. Data fusion in wireless sensor networks usually refers to sending the collected data of sensor nodes to the cluster head for fusion. For the fusion of big data, the overall solution is relatively complicated, and the energy consumption of transmitting sensor nodes far away to the cluster head is relatively high. Fast, currently many fusion algorithms ignore the problem of data correlation caused by nodes with similar space and similar environment, and simply analyze the correlation between data for fusion. [0003] In the process of data collection, the meth...

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Problems solved by technology

[0004] A waste of communication bandwidth and energy, each sensor node in the cluster transmits data to the cluster head node independently, the transmission of a large amount of data will consume too much energy for the entire network, shorten the survival time of the network, and at the same time sensor nodes far away from the cluster head node transmit consumes more energy and dies too quickly

[0005] Reduce the efficiency of information collection, sensor nodes send and receive data in the 2.4GHz frequency band, which is very easy to cause data collision

Simultaneous transmission of collected data by multiple sensor nodes will increase the scheduling difficulty of the data link layer, resulting in frequent collisions and collisions, reducing communication efficiency, thereby affecting the timeliness of information collection; at the same time, frequent collisions and data retransmissions also increase reduce the amount of data transmission and consume the energy of the entire network

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