Two-stage selection cooperation method for improving transmission reliability in clustering network
A reliability and network technology, applied in the field of two-level selection and cooperation, can solve the problems of inability to implement transmission method transmission reliability and less research on network transmission reliability, and achieve the effect of reducing the probability of system interruption and enhancing reliability.
Active Publication Date: 2019-08-02
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology
In the vast majority of clustered wireless sensor networks, the existing literature only focuses on the energy consumption of the network, and there are few studies on the transmission reliability of the network.
In wireless sensor networks, the node configuration is simple, and complex transmission methods cannot be implemented to improve transmission reliability. Therefore, it is urgent to adopt low-complexity and easy-to-implement cooperation methods to improve data transmission reliability according to network characteristics.
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[0030] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.
[0031] Such as figure 1 As shown, in a 100×100 unit square area, 100 nodes S with different coordinate positions are randomly distributed 1 ,S 2 ,S 3 ,......
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The invention relates to a two-stage selection cooperation method for improving transmission reliability in a clustering network, and belongs to the technical field of cooperative communication. The method comprises the following steps: S1, selecting cluster heads and numbering the cluster heads in sequence; calculating the channel quality and distance from the nodes except the cluster head to each cluster head, selecting the cluster head which is close to the cluster head and has good channel quality, and adding the selected cluster head into the cluster; wherein the whole network is dividedinto a plurality of clusters with different sizes; and S2, performing two-stage selection cooperative transmission. In the clustering network, the channel quality is considered in the cluster head selection, so that the improvement of the system interruption probability caused by the fact that nodes with higher residual energy and poorer channel quality become cluster heads is reduced; meanwhile,through two-stage selection cooperative transmission, the reliability of data transmission in the network is enhanced.
Description
technical field [0001] The invention belongs to the technical field of cooperative communication, and relates to a two-level selection cooperative method for improving transmission reliability in a cluster network. Background technique [0002] In wireless sensor networks, energy efficiency and data transmission reliability are two major focuses. The wireless sensor network nodes powered by batteries have very limited energy, and it is inconvenient to replace the battery, and the energy cannot be replenished in time, so saving energy and improving energy efficiency can effectively prolong the life cycle of the network. In a large-scale network, clustering the nodes in the network and using clustered hierarchical transmission is a common method to save energy and improve energy efficiency. In most clustered wireless sensor networks, the existing literature only focuses on the energy consumption of the network, and there are few studies on the transmission reliability of the ...
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IPC IPC(8): H04W40/10H04W40/12H04W40/22H04W40/32H04L12/733H04L45/122
CPCH04W40/10H04W40/12H04W40/22H04W40/32H04L45/126Y02D30/70
Inventor 李敏李青刘冲
Owner CHONGQING UNIV OF POSTS & TELECOMM