Node service flow-considering underwater acoustic channel network media access control method

Abstract

The invention discloses a node service flow-considering underwater acoustic channel network media access control method which comprises the following steps: preventing data packet collision through carrier sensing and punctual time slot sending; in each data sending process, selecting a node with the longest sending queue through interaction of RTS / CTS packets; and finally obtaining a data sending opportunity by the sending node with the longest sending queue, and delaying the data sending by all the neighbor sending nodes of the sending node until the data sending of the sending node is finished. Looking from a long process, the nodes with larger service flow requirement can obtain larger transmission bandwidth. Therefore, the node service flow-considering underwater acoustic channel network media access control method is capable of realizing more optimized network bandwidth distribution, so as to effectively improve the practical throughput of underwater network, reduce the network packet delay and improve the network energy efficiency.

Description

technical field [0001] The invention belongs to the technical field of MAC protocol, and in particular relates to an underwater acoustic channel network media access control method considering node service flow. Background technique [0002] With the development of underwater acoustic technology, underwater acoustic channel sensor network has attracted more and more attention from academia and industry. The underwater acoustic channel sensor network is a communication network that uses sound waves to transmit data. It can be widely used in marine environment monitoring, marine scientific data collection, early warning of disasters, and military fields. In order to expand the coverage of the network, the underwater acoustic channel sensor network is often a multi-hop network, that is, the data is transferred to the pre-deployed gateway node through hop-by-hop forwarding, and then transmitted to the ground control center. For a multi-diving underwater acoustic channel sensor ...

AI Technical Summary

Problems solved by technology

However, the existing underwater acoustic channel MAC protocols ignore the fact that different nodes have different business requirements, so they cannot provide an optimized bandwidth allocation mechanism

Due to the lack of bandwidth optimization mechanism, when the existing underwater acoustic channel MAC protocol is applied to multi-diving underwater acoustic channel sensor networks, it is easy to cause bandwidth waste and traffic congestion.

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