Layered data transmission method and device of wireless sensor network

Abstract

The invention provides a layered data transmission method and device of the wireless sensor network, and the method an device are applied to a cluster head node a of a random cluster A in the wireless sensor network. The method comprises that collection data sent from different cluster nodes in the cluster A is received; according to a preset cluster data fusion rule, cluster data fusion is carried out on the received collection data to generate fusion data DI; according to a preset forwarding cluster determining rule, a cluster B in a next layer LB of the layer LA where the cluster A is placed is determined, and an initial forwarding cluster head node is directed to the cluster head node b in the cluster B; and the fusion data DI is transmitted to the initial forwarding cluster head node, so that according to a preset cluster data forwarding rule, the initial forwarding cluster head node carries out layered data transmission till the fusion data is transmitted to a gathering node. According to the invention, the possibility that the cluster head node a is in failure due to energy exhaustion in the process that the data is transmitted to the gathering node is reduced, and the success rate of data transmission is improved.

Description

technical field [0001] The invention relates to the technical field of wireless sensor networks, in particular to a data layered transmission method and device for wireless sensor networks. Background technique [0002] At present, wireless sensor networks can be widely used in various fields, such as: national defense and military, environmental monitoring, logistics, high-efficiency agriculture, intelligent transportation, medical care and manufacturing, etc. Users can use wireless sensor networks to realize rapid, large-scale, and automatic collection and transmission of information. Usually, in the process of building a wireless sensor network, in order to ensure the integrity of data collection, the collection ranges covered by adjacent collection nodes are often set to overlap, resulting in a certain degree of error in the data collected by adjacent collection nodes. Redundant data, which will increase the energy consumption of each collection node during the data tra...

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Problems solved by technology

However, each cluster in the above scheme directly transmits the fused data in the cluster to the sink node after data fusion, and the energy consumption and transmission distance in data transmission often increase exponentially. Therefore, the above scheme is in The cluster head node is prone to failure due to energy exhaustion in the process of transmitting data to the sink node, resulting in data transmission failure

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