A data transmission method for underwater acoustic sensor network system

Abstract

The present invention provides a data transmission method for an underwater acoustic sensor network system, comprising: 1) a convergence node sends control information to a lower layer node; 2) each sensor node sends or forwards control information to a lower layer; 3) each sensor node sends control information to a lower layer The node uploads the data collected by the node, and forwards the data received by the node and uploaded by the lower node to the upper node. The invention satisfies the requirements of the sparse deployment mode; each node has a reliable data upload link; precise synchronization and timing are not required; and it is applicable to irregular network shapes. The present invention can control data collision to the greatest extent, and guarantee the integrity of data uploading under the objective condition of limited bandwidth; the present invention has high energy utilization efficiency of sensor nodes, can save energy, and improve service life. The invention provides two collision control schemes suitable for different transmission conditions, which effectively improves the data transmission efficiency.

Description

technical field [0001] The invention relates to the technical field of sensor networks, in particular, the invention relates to a data transmission method for an underwater acoustic sensor network system. Background technique [0002] Traditional terrestrial wireless sensor networks are composed of a large number of cheap micro-sensor nodes deployed in the detection area, and form a self-organizing system with a certain topology through wireless communication. It is self-organizing, dynamic, data-centric, and applications are closely related. The nodes in the wireless sensor network can use various types of sensors (such as sound, light, electricity, thermal sensors, etc.). Electromagnetic waves are used as carriers for transmitting data. As far as the topological structure is concerned, the current wireless sensor networks mainly include star network, point-to-point network, self-organizing network and clustering network. It is difficult for the above-mentioned existing ...

AI Technical Summary

Problems solved by technology

[0007] To sum up, the current wireless sensor network and its data transmission method cannot be applied to the underwater application environment, and a new underwater acoustic sensor network system suitable for the underwater application environment is needed

However, the underwater acoustic sensor network system has special problems such as extended signal transmission time, high data integrity requirements, small transmission bandwidth, limited energy for sensor nodes and difficult to replenish, and the existing data transmission methods are difficult to meet the requirements or even not applicable at all. Therefore, there is an urgent need to provide a data transmission method that matches the underwater acoustic sensor network system.

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