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Cross-layer design-based underwater wireless sensor network life cycle prolonging method

A wireless sensor and life cycle technology, applied in network topology, wireless communication, advanced technology, etc., can solve the problems of limited function, uneven energy consumption of nodes, reduce network life cycle, etc. The effect of node energy consumption reduction

Active Publication Date: 2018-04-13
TIANJIN UNIV
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Problems solved by technology

Most of these algorithms usually only optimize the design of a single network protocol layer, which has a limited effect on network performance improvement; the existing cross-layer design algorithms only aim at minimizing the overall energy consumption of the entire network, which is likely to cause energy loss of nodes in the network. The uneven consumption causes some nodes to die earlier, reducing the network life cycle

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  • Cross-layer design-based underwater wireless sensor network life cycle prolonging method
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  • Cross-layer design-based underwater wireless sensor network life cycle prolonging method

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Embodiment Construction

[0041] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0042] The proposed method is mainly divided into two steps. The specific details are as follows:

[0043] Step 1. Establish the maximum life cycle model of the underwater wireless sensor network:

[0044] The survival time of the first dead node in the network is selected as the life cycle of the entire network. Due to the high cost of sensors and the generally large detection area, underwater sensor networks usually have a sparse network topology. The death of any node may cause a significant drop in network performance or even the death of the network. Therefore, it is more reasonable and more in line with practical application scenarios to regard the survival time of the first dead node as the life cycle of the entire network. Define the network lifecycle as T net for:

[0045] T net =minT i ,i=1,...,M

[0046] Among them, T i Indi...

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Abstract

The invention discloses a cross-layer design-based underwater wireless sensor network life cycle prolonging method. The method includes the following steps that: (1), an underwater wireless sensor network maximum life cycle model is built; and (2), an iterative algorithm is executed, the optimal scheme of a network transmission scheme which contains the data rate and transmission power of nodes, and network link scheduling is obtained. Compared with the prior art, the method of the present invention can realize the reduction of the energy consumption of the nodes and energy consumption balancebetween the nodes in the network, thereby effectively prolonging the life cycle of the network.

Description

technical field [0001] The invention relates to the field of underwater wireless sensor networks, in particular to a method for extending the life cycle of an underwater wireless sensor network. Background technique [0002] Due to the particularity of underwater communication, traditional land-based sensor network design methods are not suitable for underwater networks. As a result, underwater wireless sensor networks have emerged, which can provide reliable and efficient communication services for various marine activities. New network architecture. Once the sensor nodes in the wireless sensor network are deployed, it is difficult to maintain and recover, and it is difficult to get energy supplement in most application scenarios, so the energy of the nodes is limited. Therefore, reducing network energy consumption or extending the life cycle of the entire network has become the most important goal in the design of underwater wireless sensor networks. [0003] Therefore, ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/02H04W52/34H04W84/18
CPCH04W52/0209H04W52/34H04W84/18Y02D30/70
Inventor 周圆杨鸿宇吴琼杨建兴李鸿儒
Owner TIANJIN UNIV
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