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Wireless sensor network data transmission method based on LEACH protocol

A network data transmission and wireless sensor technology, applied in the transmission system, network topology, wireless communication, etc., can solve the problems of short network survival time and high network energy consumption, and achieve the effects of balanced energy consumption, optimized performance, and balanced energy consumption

Inactive Publication Date: 2015-01-28
HOHAI UNIV CHANGZHOU
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Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a wireless sensor network data transmission method based on the LEACH protocol, and solve the technical problems of high network energy consumption and short overall network survival time in the prior art

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  • Wireless sensor network data transmission method based on LEACH protocol
  • Wireless sensor network data transmission method based on LEACH protocol
  • Wireless sensor network data transmission method based on LEACH protocol

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0040] A wireless sensor network data transmission method based on the LEACH protocol, comprising the following steps:

[0041] Step 1: Determine the network topology and initialization: All sensor nodes are randomly distributed in a square area, and the following assumptions are made: the base station is fixed in the center of the square area, and the energy is infinite. The positions of all sensor nodes are also fixed, the position information is known, they have unique identifiers, and they have the same initial energy E 0 . The transmission power of sensor nodes can be adjusted, and the distance between two nodes can be determined according to the transmission power and the strength of rec...

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Abstract

The invention discloses a wireless sensor network data transmission method based on an LEACH protocol and belongs to the technical field of wireless sensor networks. The method aims at balancing the energy consumption of sensor nodes and prolonging the life cycle of a wireless sensor network. In order to overcome the defects of the LEACH protocol, the LEACH protocol is improved in the aspects of cluster head selection and data transmission. In each round of cluster head selection, the nodes are classified into a standard zone and a warning zone according to remaining energy, so that the nodes located in different zones are selected as cluster head nodes of the round at different probabilities, and therefore the nodes with relatively low energy are protected. In the data transmission process of cluster heads and a base station, according to the distances between the cluster head nodes and the base station, data transmission is conducted in a single-hop and multi-hop combined mode, and energy expense is reduced. According to the method, the life cycle of the network is effectively prolonged, the energy consumption of the network is balanced, and the performance of the network is optimized.

Description

technical field [0001] The invention relates to a wireless sensor network data transmission method based on the LEACH protocol, belonging to the technical field of wireless sensor networks. Background technique [0002] The wireless sensor network is an ad hoc network composed of a large number of sensor nodes through wireless transmission. The purpose is to sense, monitor, collect and process relevant environmental parameters in the area in real time, and finally send them to end users. The energy of nodes in wireless sensor networks is provided by batteries, and the survival time of nodes is limited by the capacity of batteries. Therefore, energy saving has always been a research hotspot in wireless sensor networks. Based on this, it is very important for wireless sensor networks to design high-efficiency and low-energy routing algorithms to prolong the lifetime of the network and improve the utilization of the network. The routing algorithm based on clustering can effect...

Claims

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Application Information

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IPC IPC(8): H04W24/02H04W52/02H04W84/18
CPCH04L45/46H04W40/02H04W40/10H04W84/18Y02D30/70
Inventor 江冰吉正洵黄鹍胡钢李丽芳周悦
Owner HOHAI UNIV CHANGZHOU
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