Relay Node Placement Based on Optimal Transmission Distance in Two-Tiered Sensor Network

Mao Li,Feng Jiang

doi:10.1109/access.2020.3000817

Abstract

With the gradual expansion of the application field in wireless sensor networks, the problems of the energy consumption has received more and more attention. In wireless sensor networks, the location of sensor nodes and gateway nodes are usually fixed. To ensure that the energy consumption of the sensor network is minimized during data transmission, it is necessary to optimize the placement of relay nodes. This paper proposes the solution of relay nodes placement based on optimal transmission distance, which can minimize the energy consumption and extend the lifetime of the entire network during the transmission process. This scheme starts with a one-dimensional queue network and calculates the optimal distance for each hop transmission to minimize the energy consumption of the one-dimensional queue network. Due to the poor connectivity of the one-dimensional queue network, the concept of the optimal transmission distance is introduced into two-dimensional network, so that the placement scheme can be divided into the symmetrical relay node placement and the asymmetric relay node placement. Finally, the energy consumption of the network is minimized by properly selecting relay nodes. The simulation show that the proposed relay node placement scheme can reduce the energy consumption of the sensor network and extend the network life cycle.

Highlights

With the rapid development of micro-motor technology, wireless communication and digital electronic technology, the wireless sensor networks have been applied to many fields that require reliable and real-time data transmission [1]
To analyze the performance of the proposed relay node placement scheme based on the optimal transmission distance, this algorithm is compared with the minimum distance transmission algorithm and the greedy optimization algorithm
THE SIMULATION RESULTS AND ANALYSIS From the perspective of average residual energy and network life cycle in the paper, the relay node placement algorithm based on optimal transmission distance is proposed

Summary

INTRODUCTION

With the rapid development of micro-motor technology, wireless communication and digital electronic technology, the wireless sensor networks have been applied to many fields that require reliable and real-time data transmission [1]. The sensor node is responsible for data collection, processing, and wireless transmission. Sensor nodes do not send raw data to nodes which is responsible for fusion. Instead, they use their processing power to perform simple calculations locally and transmit only the data that needs to be processed. Because most sensor nodes are randomly deployed and powered by batteries, the energy consumption of node plays an important role in the effectiveness of sensor network applications. From the perspective of the overall placement, the positions of sensor nodes and relay nodes are relatively fixed, due to the reliability of data transmission between sensor nodes and gateway node. The positions of relay nodes are needed to be set reasonably in wireless sensor network [3]

THE RELATED WORK

THE OPTIMAL TRANSMISSION SCHEME

CONCLUSION