A Reliable Hybrid Routing Strategy for Durability Monitoring of Concrete Structures in Wireless Sensor Networks

Routing is of great significance for durability monitoring of concrete structures in wireless sensor networks. However, current solutions cannot satisfy the requirement of comprehensive network performance, including reliable communication, low data delay, and high energy efficiency. In this paper, we study the multi-objective data transmission problem and propose a hybrid routing strategy named HRRS based on packet retransmission and packet reproduction. The goal is to achieve the tradeoff of low energy consumption, low delay and high reliability. This strategy combines the reproduction mechanism and retransmission mechanism to ensure high reliable communication, and reduces the number of reproduction paths to reduce the number of packet copies in the network, and accordingly reduce the energy consumption of the network. Meanwhile, the average transmission delay of the network is guaranteed by the reproduction mechanism. Furthermore, the data load, network reliability and delay of the nodes are analyzed, and the multi-objective constraint model is established. Simulations are implemented to evaluate the HRRS scheme that proposed in this paper greatly improves the reliability of transmission while ensuring the average transmission delay of the network, and is superior to the PR scheme in energy efficiency performance. The energy cost of HRRS is reduced by 10%-20% compared to the PR.