Research on Terminal Access Performance of Beam-Hopping Satellite in IoT Scenario-Reference-Cited by-同舟云学术

Research on Terminal Access Performance of Beam-Hopping Satellite in IoT Scenario

Published:2023-01-27 Issue:3 Volume:23 Page:1428
ISSN:1424-8220
Container-title:Sensors
language:en
Short-container-title:Sensors

Author:

Nie Yulei¹,Zhang Gengxin²

Affiliation:

1. College of Integrated Circuit Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China

2. School of Communications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China

Abstract

In recent years, low-orbit satellites have become an important development direction in satellite IoT systems. The number of terminals is large and data collisions occur frequently in the low-orbit satellite IoT scenario. How to design a reliable random access protocol to improve the tolerance of the system for collision is one of the research hotspots in this field. In this paper, the random access protocol, used in the Internet of Things (IoT), for low-orbit satellites is studied, and the access process of the IoT terminals in the scenario is constructed. The access performance of the SSA protocol is analyzed and an improved SSA random access strategy, called Retransmission-SSA (R-SSA), is proposed. The simulation results show that the designed R-SSA can effectively tolerate the signal conflicts between terminals in the beam-hopping LEO IoT scenario and improve the probability of the concurrent access of low-orbit sIoT terminals.

Funder

National Natural Science Foundation of China

Natural Science Foundation of Jiangsu Province, Major Project

Publisher

MDPI AG

Subject

Electrical and Electronic Engineering,Biochemistry,Instrumentation,Atomic and Molecular Physics, and Optics,Analytical Chemistry

Link

https://www.mdpi.com/1424-8220/23/3/1428/pdf

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