Two-hop multipath routing method for wireless sensor networks based on energy harvesting technology

Abstract

The invention discloses a double-bounce multi-path route method of a wireless sensor network based on the energy collection technology. The wireless sensor network comprises a base station and a plurality of nodes, wherein each node comprises a wireless sensor and an energy collection device for supplementing energy for the wireless sensor. The wireless sensor network is characterized by adopting the following forwarding standard: 1. forwarding by a node nearest to a target node; 2. forwarding by a node with the shortest distance with the target node; and 3. according to distance between nodes, residual energy, energy supplementing rate and consumption rate, forwarding by a node with the optimal effect. The invention has the beneficial effect that a node sleeping scheduling mechanism is led in, and energy is collected from the environment so as to prolong network service life. According to different requirements and environments, the greedy forwarding mechanisms which are based on distance between nodes, shortest path and node energy levels and utilize double-bounce neighborhood node information are designed, and the reliability and the instantaneity of data transmission are given consideration to avoid a routing void.

Description

technical field [0001] The invention belongs to the field of wireless sensor networks, in particular to a two-hop multi-path routing method for wireless sensor networks based on energy collection technology. Background technique [0002] Wireless sensor networks (Wireless Sensor Networks, WSNs), due to its high degree of interdisciplinary and broad application prospects, has attracted great attention from academia and industry all over the world. Wireless sensor networks are widely used in many fields to process sensitive information, and the application scenarios include military, industrial, family, medical, marine and other environmental monitoring and many other fields. The energy, processing power, and communication capabilities of WSNs nodes are very limited, and they are easy to die due to energy exhaustion. This requires WSNs to reduce the energy consumption of nodes as much as possible and improve the life cycle of the network under the condition of providing certai...

AI Technical Summary

Problems solved by technology

[0010] 1. Due to the importance of energy in wireless sensor networks, scholars from various countries have proposed various protocols based on energy perception, network optimization, and prolonging the life of the entire network, but they have not fully considered the use of energy harvesting by wireless sensor nodes. In the case of technology as a means of energy renewal and supplementation, the corresponding network protocol must be designed in order to achieve the ultimate goal of the permanent life of wireless sensor nodes and the permanent use of wireless sensor networks

[0011] 2. Traditional geographic routing mostly relies on single-hop neighbor node information for data forwarding

The traditional method is to select the node closest to the destination node to forward, so that the number of hops to the destination node is the least, but this will cause the selected forwarding node to be far away from the current node, and the reliability of the link is poor. Design the corresponding forwarding mechanism according to the application requirements

[0013] 4. In traditional routing algorithms, under the influence of geographical environment factors and low network node density, there will be a phenomenon that a node cannot find a neighbor node closer to the target node as the next hop node, that is, a local optimization problem. also known as routing hole

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