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Wireless network sensor network coverage distributed method

A sensor network and wireless network technology, applied in the distributed field of wireless network sensor coverage, can solve the problems that the effective coverage time does not reach the maximum, cannot meet the dynamic task requirements well, and ignore the space for network life improvement.

Active Publication Date: 2014-08-13
XIDIAN UNIV
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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a distributed method for wireless network sensor network coverage, which aims to solve the problem that the existing algorithm sets the actual network lifetime as a constant, which cannot meet the dynamic task requirements well, so the actual network lifetime is ignored. There is room for network life to be improved, so that the total effective coverage time does not reach the maximum problem

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  • Wireless network sensor network coverage distributed method
  • Wireless network sensor network coverage distributed method
  • Wireless network sensor network coverage distributed method

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0034] The application principle of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0035] Such as figure 1 As shown, the distributed method of wireless network sensor network coverage in the embodiment of the present invention includes the following steps:

[0036] S101: Neighbors of node si, covered point position, preset network life L, battery life Bi, si's tag type UPD, ii=1;

[0037] S102: Determine whether ii

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Abstract

The invention discloses a wireless network sensor network coverage distributed method. Assigned task completion time is set as a fixed value, and a mathematic model is established aiming at how to enable coverage of nodes-to-point positions to be maximum; the assigned task completion time is divided according to turns to solve the model, how to select the most suitable working node in each turn and close other redundant nodes at the same time is achieved, and the actual network service life is made to be longer than the assigned task completion time; in addition, how to select the optimal working time scheme of the working nodes in each turn to enable the coverage of nodes-to-point positions to be maximum is achieved; therefore, an improved distributed algorithm is proposed. According to the wireless network sensor network coverage distributed method, through simulation experiments, the performance of the improved algorithm exceeds that of an original algorithm and that of a random algorithm in the aspects of total effective coverage time, network service life, average weighting event detectivity and network node residual energy evenness.

Description

technical field [0001] The invention belongs to the technical field of wireless network sensors, in particular to a distributed method for wireless network sensor coverage. Background technique [0002] A wireless sensor network is composed of a large number of tiny sensor nodes with limited energy, and these nodes are randomly deployed in a designated monitoring area to detect important targets in the covered monitoring area. Therefore, selecting appropriate nodes to work and making reasonable and effective use of limited energy is the core of wireless sensor network design, and maximizing the sensing coverage of nodes to key locations in a limited network life is a hot spot in wireless sensor network research. one. [0003] Most of the existing coverage algorithms study how to prolong the network life under the condition of satisfying specific area coverage. However, few works focus on how to maximize the coverage of nodes to key locations. The literature "Spatial-tempo...

Claims

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Application Information

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IPC IPC(8): H04W16/18H04W84/18
Inventor 林伟宏胡明明齐小刚刘立芳冯海林
Owner XIDIAN UNIV
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