LEACH protocol improvement method capable of lowering energy consumption

A protocol and power consumption technology, applied in the field of wireless sensor networks, which can solve the problems of sudden increase in energy consumption, large cluster size, and task failure.

Active Publication Date: 2014-07-09
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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Problems solved by technology

However, in the LEACH protocol, the data transmission between the cluster head and the base station is a single-hop method. When the distance is greater than the distance threshold of the sensor communication module, the energy consumption is calculated using the multi-path attenuation model, and the energy consumption will increase sharply, and the remote cl

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  • LEACH protocol improvement method capable of lowering energy consumption
  • LEACH protocol improvement method capable of lowering energy consumption
  • LEACH protocol improvement method capable of lowering energy consumption

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[0059] In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with examples, which are only used to explain the present invention and do not constitute a limitation to the protection scope of the present invention.

[0060] like Figure 1-4 As shown, this embodiment provides a method for improving the LEACH protocol that reduces power consumption, including the following steps: Step 1, determine the network topology: as figure 1 As shown, n common sensor nodes are randomly and evenly distributed in the monitoring area. The physical structure and initial energy of each node are the same, and they have certain data processing and fusion functions, but they are all powered by batteries and their own energy is limited; The perception radius of all nodes is the same, and the coverage area is a circle with the node as the center and R as the radius. Each node can calculate the approximate communication dis...

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Abstract

The invention provides an LEACH protocol improvement method capable of lowering energy consumption. A basic system comprises normal nodes, cluster header nodes, forwarding nodes and a base station. The specific cycle operation steps comprise network topology determination, initialization, selection of the cluster header nodes, cluster forming, data transmission, selection of the cluster header nodes and cluster forming. According to the defects of an LEACH protocol, improvement is conducted from the aspects of selection of cluster heads, cluster forming and a data transmission mode. In selection of the cluster heads, the comprehensive influences of the energy of the nodes, the distance to the base station and density are considered, the burdens of the cluster heads are balanced, and distribution and energy consumption of the selected cluster header nodes are made balanced in a network. In cluster forming, the mode of grid clustering is used, the nodes calculate the two-dimensional values of grids where the nodes are placed by themselves, and the effectiveness of node energy is guaranteed. In data transmission mode, a routing mode with single-hop and multi-hop combined is used according to the distance of the cluster header nodes and the base station, the energy consumption of network nodes is lowered by the purpose that the energy utilization rate is highest.

Description

technical field [0001] The invention relates to the field of wireless sensor networks, in particular to an improved method of LEACH protocol for reducing power consumption. Background technique [0002] Wireless sensor network is a new network model, which consists of a large number of micro-sensor nodes with communication and computing capabilities densely arranged in unattended monitoring areas. These sensor nodes are powered by independent batteries and are networked in the form of self-organization. Through coordinated operation among nodes, the information of the monitored objects in the network coverage area is collected and sent to the observer in time to complete the expected network tasks. [0003] At present, domestic wireless sensor networks are mostly used for regional environment monitoring. Since network nodes are often arranged in harsh environments that are difficult for humans to reach, and are powered by batteries, it is difficult to replenish and replace n...

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Application Information

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IPC IPC(8): H04W52/02H04W84/18
CPCY02D30/70
Inventor 陈孟元周萌陈跃东
Owner ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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