Wireless sensor network survival time optimization method based on fusion conjugate gradient

A wireless sensor network and time-to-live technology, applied in the field of communication, can solve the problems of reduced network working time and abnormal data transmission base stations, etc., to reduce node energy consumption, improve survival time and network service quality, and improve search efficiency. Effect

Active Publication Date: 2021-11-23
LUDONG UNIVERSITY
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Problems solved by technology

Therefore, the energy consumption of the sensor nodes near the base station is faster, which eventually causes the nodes near the base station to stop working before the external nodes, so that the data collected by the external nodes cannot be transmitted to the base station normally, forming an "energy hole" area, resulting in a decrease in the working time of the network. reduce

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  • Wireless sensor network survival time optimization method based on fusion conjugate gradient
  • Wireless sensor network survival time optimization method based on fusion conjugate gradient
  • Wireless sensor network survival time optimization method based on fusion conjugate gradient

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[0103] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. This implementation is based on the network resource allocation method of the fusion conjugate gradient method, and is realized through the following technical solutions.

[0104] Description of the system model

[0105] The wireless sensor network is represented by an undirected graph G(A, L), and the set of base stations and sensor nodes in the WSN network is set as A. With the base station as the center of the circle, the sensor nodes are divided into a series of circular areas of equal width, which are recorded as C from the inside to the outside. 1 , C 2 ,...,C n ,like figure 1 shown. There is only one base station node in the network, and the base station has strong processing capability, communication capability and storage capability, and its energy is not limited. ...

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Abstract

The invention relates to a survival time optimization method of a wireless sensor network, and belongs to the technical field of communication. The method comprises the following steps: researching the energy consumption problem of wireless sensor network nodes, considering the characteristic of unbalanced energy consumption among initial energy of a sensor, a wireless communication channel and node communication, establishing a constraint conforming to an actual wireless sensor network environment, introducing a circular ring energy consumption rate to describe the energy consumption speed of the nodes in a circular ring, and restraining the number of nodes in the circular ring, so the energy consumption rates corresponding to the circular ring tend to be consistent; defining the survival time of the nodes as the ratio of the initial energy of the nodes to the energy consumption per unit time, and establishing a network survival time optimization model; fusing DY(Dai-Yuan) and LS(Liu-Storey) to improve conjugate gradient parameters, adopting a strong Wlofe imprecise descent criterion for the step length, and then providing a method for providing the optimal survival time based on the fused conjugate gradient. Convergence analysis and simulation results show that the method has good convergence and can effectively control the communication rate between the sensors, so that the survival time of the wireless sensor network is effectively prolonged.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a realization method of wireless sensor network survival time optimization based on fusion conjugate gradient. Background technique [0002] Wireless Sensor Networks (WSN) is composed of a large number of nodes deployed in various ways in the monitoring area, collects, processes and transmits information in the deployment area, and transmits the collected data to the monitoring area through multi-hop relay transmission. The base station then reports to the user. The wireless sensor network connects the information world and the objective world, and satisfies the requirements of people to maintain communication and enjoy multimedia services anytime and anywhere. Its application field has gradually expanded from the initial military field to agriculture, environment, industrial production and other fields [1]- [ 3]. As an independent computing and control unit, a WSN node ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/02H04W52/02H04W84/18
CPCH04W24/02H04W52/0203H04W84/18Y02D30/70
Inventor 唐美芹殷晨瑞
Owner LUDONG UNIVERSITY
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