Adaptive Packet-Length Assisted Random Access Scheme in LEO Satellite Network

Bai, Jialing; Ren, Guangliang

doi:10.1109/access.2019.2918194

Cited by 7 publications

(2 citation statements)

References 14 publications

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“…5) Access Design and Multiplexing: One of the most important enablers of vigorous NGSO satellite communications is the efficiency of radio access schemes. Many access solutions for heterogeneous terminals with stationary and nonstationary channel characteristics have been developed in the framework of terrestrial networks [137]. Herein, radio access design for on ground and airborne users is more complicated and challenging compared to the terrestrial case due to the different relative motion of those users with respect to satellite nodes, variable propagation delay, uneven transmit powers, link availability, and variable QoS profiles [138].…”

Section: A Physical and Radio Access Aspectsmentioning

confidence: 99%

A Survey on Nongeostationary Satellite Systems: The Communication Perspective

Al-Hraishawi

Chougrani

Kisseleff

et al. 2023

IEEE Commun. Surv. Tutorials

106

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The next phase of satellite technology is being characterized by a new evolution in non-geostationary orbit (NGSO) satellites, which conveys exciting new communication capabilities to provide non-terrestrial connectivity solutions and to support a wide range of digital technologies from various industries. NGSO communication systems are known for a number of key features such as lower propagation delay, smaller size, and lower signal losses in comparison to the conventional geostationary orbit (GSO) satellites, which can potentially enable latency-critical applications to be provided through satellites. NGSO promises a substantial boost in communication speed and energy efficiency, and thus, tackling the main inhibiting factors of commercializing GSO satellites for broader utilization. The promised improvements of NGSO systems have motivated this paper to provide a comprehensive survey of the state-of-theart NGSO research focusing on the communication prospects, including physical layer and radio access technologies along with the networking aspects and the overall system features and architectures. Beyond this, there are still many NGSO deployment challenges to be addressed to ensure seamless integration not only with GSO systems but also with terrestrial networks. These unprecedented challenges are also discussed in this paper, including coexistence with GSO systems in terms of spectrum access and regulatory issues, satellite constellation and architecture designs, resource management problems, and user equipment requirements. Finally, we outline a set of innovative research directions and new opportunities for future NGSO research.

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Section: A Physical and Radio Access Aspectsmentioning

confidence: 99%

A Survey on Nongeostationary Satellite Systems: The Communication Perspective

Al-Hraishawi

Chougrani

Kisseleff

et al. 2023

IEEE Commun. Surv. Tutorials

106

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“…Subsequently, R-CSA 34 further improved CSA to cope with the ALOHA collision problem in the multi-receiver satellite IoT. Bai and Ren 35 proposed a new adaptive packet-length assisted slotted ALOHA scheme to cope with the large dynamic satellite channel environment. Ren’s team introduced the ideas of non-orthogonal multi-access and polarized transport into slotted ALOHA, and proposed two random-access methods, namely non-orthogonal slotted ALOHA (NOSA) 36 and polarized MIMO slotted ALOHA (PMSA), 37 to achieve higher throughput.…”

Section: Physical Layer Technologies Of Satellite Iotmentioning

confidence: 99%

A review on non-terrestrial wireless technologies for Smart City Internet of Things

Wang

Miao

et al. 2020

International Journal of Distributed Sensor Networks

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Smart City Internet of Things will become a fundamental infrastructure to support massive machine-type communications between the widely deployed sensors serving big cities. Since there exists many location constraints for the existing terrestrial Internet of Things, the non-terrestrial Internet of Things sheds light on breaking these limits. Therefore, this article conducts a comprehensive survey on non-terrestrial Internet of Things technologies for Smart City, which is an important complement to terrestrial Internet of Things. We first present the application scenarios of Internet of Things and point out where the existing terrestrial Internet of Things cannot work perfectly. Two non-terrestrial Internet of Things technical proposals are then introduced, namely satellite Internet of Things and unmanned aerial vehicle Internet of Things. However, the focuses of these non-terrestrial Internet of Things are distinct, that is, the major problems of satellite and unmanned aerial vehicle Internet of Things are the high dynamic nature of channel and high maneuverability of unmanned aerial vehicles, respectively. The key technologies for satellite and unmanned aerial vehicle Internet of Things are then reviewed separately. Both physical and non-physical layer technologies are surveyed for satellite Internet of Things, and the route planning is mainly investigated for the unmanned aerial vehicle Internet of Things. Finally, we draw a conclusion and give some potential research directions of non-terrestrial Internet of Things.

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