Fault-tolerant routing recovery method of heterogeneous wireless sensor network

A wireless sensor and recovery method technology, applied in network topology, wireless communication, advanced technology, etc., can solve problems such as low accuracy and reduced convergence speed

Inactive Publication Date: 2012-12-05
DONGHUA UNIV
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Problems solved by technology

However, the particle swarm has the problem of premature convergence, and the convergence speed is fast in the early stage of optimization. As the optimization process continues, it is easy to fall into local optimum in the later stage of the search, the convergence speed decreases, and the accuracy is low.

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  • Fault-tolerant routing recovery method of heterogeneous wireless sensor network
  • Fault-tolerant routing recovery method of heterogeneous wireless sensor network
  • Fault-tolerant routing recovery method of heterogeneous wireless sensor network

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with specific implementation examples. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0028] figure 1 It shows the overall architecture of H-WSNs, including the lower-level common nodes and the upper-level super nodes. The super node acts as the cluster head of the surrounding common nodes, and the data in the cluster is relayed to the cluster head through the common nodes, and finally converges to the background nodes. figure 2 Described is the flow chart of H-WSNs fault-tolerant routing restor...

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Abstract

The invention relates to a fault-tolerant routing recovery method of a heterogeneous wireless sensor network. The method comprises the following steps: when a path in a cluster of the heterogeneous wireless sensor network is broken due to node failure, establishing a multi-path routing generation graph in the cluster and performing path coding; selecting an optimal substitutive path by a multi-particle swarm immune cooperative optimization algorithm and performing routing recovery; and maintaining the network system by an algorithm-based protocol. The multi-particle swarm immune cooperative optimization algorithm has the characteristics of relatively strong global search capability, relatively high solving precision, fast convergence and the like. The invention improves the fault tolerance of the heterogeneous wireless sensor network, improves the success rate of data transmission by quickly establishing the optimal substitutive path and prolongs the survival time of the network.

Description

technical field [0001] The invention belongs to the technical field of wireless sensor networks, in particular to a fault-tolerant route restoration method for heterogeneous wireless sensor networks. Background technique [0002] Heterogeneous wireless sensor networks (H-WSNs) play an important role in wireless sensor networks (WSNs). It generally includes two types of sensor nodes: a large number of ordinary nodes with limited energy are randomly distributed in the monitoring area, and a small number of super nodes with rich energy and high reliability are arranged in known locations. The super node acts as the cluster head of the surrounding ordinary nodes, which makes the whole network form a two-layer structure. Compared with homogeneous WSNs, H-WSNs can improve the success rate of data transmission and reduce the energy consumption in the transmission process. However, in practical applications, sensor failures, etc., will cause the network link to be broken and the s...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/04H04W40/02H04W84/18
CPCY02D30/70
Inventor 丁永生胡一帆郝矿荣程丽俊
Owner DONGHUA UNIV
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