Energy-efficient and obstacle-avoiding underwater routing method

Abstract

The invention relates to an energy-efficient and obstacle-avoiding underwater wireless sensor network routing method. According to the method, marine animals are prevented from serving as obstacles tointerfere underwater node communication. The residual energy of nodes is considered in a routing decision, data transmission between the two nodes is realized by utilizing multi-hop forwarding, the whole underwater network is divided into network blocks of 1000m * 1000m * 1000m, each network block comprises a sensor node, and a plurality of marine animals are regarded as an obstacle. The sensor nodes requiring mutual communication can sense, receive and forward data packets, and have consistent transmission range and energy consumption. Further, if the sensor node is not operating, the sensornode is in a sleep state.

Description

technical field [0001] The invention relates to the field of underwater wireless sensor networks, in particular to an energy efficient and obstacle avoidance routing method. Background technique [0002] Underwater wireless sensor networks have the characteristics of high delay, high attenuation, and limited channel resources. Compared with terrestrial wireless communication channels, underwater channels are complex and changeable. Due to the established characteristics of underwater sensor networks, the mature mechanisms, protocols, and algorithms of terrestrial wireless sensor networks cannot be directly applied to underwater networks. At present, the research of underwater wireless sensor network protocol has been paid more and more attention by experts and scholars. Among them, nodes need to consume a lot of energy to send information and receive information, and the energy consumption of sending information is many times larger than the energy consumption of receiving ...

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Problems solved by technology

However, the nodes deployed underwater are powered by batteries, and it is very difficult to replace and recharge the batteries. The limited battery energy will limit the life cycle of the entire communication network.

[0003] At present, most of the research on routing methods for underwater wireless sensor networks is devoted to solving the above-mentioned energy consumption problems and achieving path reachability in the case of routing holes, but the impact of obstacles on the routing path of underwater nodes is often ignored in the routing process. interference

For example, marine mammals and underwater nodes both use sound waves to complete communication. When marine mammals live within the range of node communication, it will inevitably cause mutual interference, which will affect the normal communication and routing of underwater nodes. path decision

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