Energy-saving routing method for underwater sensor network on basis of vector forwarding

Abstract

The invention provides an energy-saving routing method for an underwater sensor network on the basis of vector forwarding. The energy-saving routing method includes computing distances from nodes to previous hop nodes recorded in data packets and angles of arrival of the previous hop nodes when the nodes receive the data packets, and judging whether the distances and the angles of arrival are within ranges of radiuses of forwarding channels or not; computing the distance from each node to projection of the node on a routing vector from a corresponding source node to a corresponding destination node and an included angle between a vector from each previous hop node to a corresponding destination node and a vector from the previous hop node to the corresponding node; computing forwarding coefficients; enabling the nodes to hold the data packets and wait for certain periods, and computing the corresponding forward coefficients relative to a plurality of corresponding nodes again whenever a certain node receives the corresponding data packet from the corresponding nodes during waiting; and broadcasting within the forwarding radiuses if repeated packets are not received during waiting, and forwarding the data packets. The energy-saving routing method for the underwater dynamic network has the advantages that the routing energy consumption of the network can be effectively saved, the energy consumption of the total network can be balanced, network cavities are prevented, and accordingly the service life of the network is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of underwater sensor network communication, in particular to a method for saving energy consumption in the routing process based on vector forwarding at the routing layer of the underwater network. Background technique [0002] Although the underwater network environment and land network have certain similarities in network interconnection and communication, they are quite different in many aspects. Due to the influence of the following factors, the network communication situation of the underwater network is different from that of the land: the bandwidth of electromagnetic waves is severely limited in the long-distance underwater propagation, only 30-3000HZ, and requires high transmission power and transmission power, and transmission Large delay; multipath effect and attenuation make the underwater channel very easy to damage; the extreme characteristics of the underwater channel lead to a high error rate ...

AI Technical Summary

Problems solved by technology

[0005] The existing underwater routing protocols based on vector forwarding often cannot comprehensively consider the three factors of position, motion and energy for forwarding underwater networks, and the selection of routes is not comprehensive enough: multiple nodes with advantageous positions are selected for forwarding, so that individual The energy of a single node in the area is exhausted due to multiple uses, causing the routing of the entire network at these nodes to fail, forming a network hole, and causing the network to be paralyzed prematurely

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