Title
A Joint Optimization Scheme for Hybrid MAC Layer in LEO Satellite Supported IoT
Abstract
The Internet of Things (IoT) aims to interconnect and converge the physical world and cyberspace. It represents the future of networking, and leads the wave of the third industrial revolution. As IoT applications evolve, more and more regions lacking infrastructures are also experiencing an urgent need to deploy and connect IoT devices into the network. Low earth orbit satellites, due to its wide coverage and relatively low latency, can provide network access for IoT system. In this article, we propose a low-latency heterogeneous network MAC approach for space-earth integrated IoT network, which can significantly reduce network latency, improve system scalability and balance total system load. Specifically, we design a geographic priority time slot allocation strategy which ensures optimal load and latency, besides, we also design a continuous forward time slot allocation strategy, which guarantees data timeliness while reducing the utilization of satellite resources. Then we design three algorithms based on above strategies, which can effectively reduce network latency and balance the satellite resources. The simulation experimental results are consistent with the theoretical results, which embodies the effectiveness of the algorithm.
Year
DOI
Venue
2021
10.1109/JIOT.2021.3068525
IEEE Internet of Things Journal
Keywords
DocType
Volume
Heterogeneous network,low latency,satellite network,time slot strategy
Journal
8
Issue
ISSN
Citations 
15
2327-4662
2
PageRank 
References 
Authors
0.39
0
4
Name
Order
Citations
PageRank
Chaoyu Wang141.43
Liang Liu258757.54
Huadong Ma32020179.93
Dan Xia432.21