Conflict-free submarine sound multi-channel MAC method based on interactive channel allocation

Abstract

The invention discloses a conflict-free submarine sound multi-channel MAC method based on interactive channel allocation, which comprises the following steps of: 1, virtually dividing a water area for deploying a network into a plurality of continuous cubic areas, and taking nodes positioned in the same cubic area as a cluster; 2, performing intra-cluster layering on the nodes according to the distance between the intra-cluster nodes and the corresponding cluster head; 3, taking the cluster head as the innermost layer, performing channel pre-allocation on an outer-layer neighbor node adjacent to the inner-layer node by the inner-layer node, and sending a pre-allocation result to the corresponding outer-layer neighbor node through a pre-allocation packet; 4, performing, by the outer-layer node, reverse selection and confirmation on the corresponding inner-layer node sending the pre-distribution packet to the outer-layer node; 5, performing, by the inner layer node, channel redistribution on the outer layer node according to a reverse selection and confirmation result; and 6, sending data from the outer layer node to the inner layer node layer by layer according to the channel redistribution result until the data collected by all the nodes in the cluster are collected at the cluster head, and carrying out the next round of data collection.

Description

technical field [0001] The invention belongs to the technical field of underwater wireless communication, in particular to a conflict-free underwater acoustic multi-channel MAC method based on interactive channel allocation. Background technique [0002] MAC technology is the key technology for coordinating the access of each node in the network to the public communication medium, and provides a fundamental guarantee for conflict-free network communication. MAC technology is an important technical support for Underwater Wireless Sensor Networks (UWSN), and has always been a research hotspot in computer science. [0003] In the UWSN environment, the radio signal attenuation is serious, which is not suitable for long-distance reliable communication, so the underwater acoustic signal is usually used instead of the radio signal. Compared with radio signals, underwater acoustic signals have the characteristics of slow propagation speed, narrow available bandwidth, and high bit e...

AI Technical Summary

Problems solved by technology

This type of technology can deal with more communication traffic in the network because it pre-specifies the access of each node in the network to the channel, but usually requires a central node to be responsible for generating the scheduling, and the communication overhead generated during the scheduling process cannot be ignored

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