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Low-Delay Broadband Satellite Communications with High-Altitude Unmanned Aerial Vehicles

Title
Low-Delay Broadband Satellite Communications with High-Altitude Unmanned Aerial Vehicles
Authors
Joo, ChangheeChoi, Jihwan P.
DGIST Authors
Choi, Jihwan P.
Issue Date
2018-02
Citation
Journal of Communications and Networks, 20(1), 102-108
Type
Article
Article Type
Article
Author Keyword
ALOHA; relay architecture; satellite communications; unmanned aerial vehicles (UAV); uplink access
Keyword
NETWORKS; EFFICIENT; SYSTEMS; SERVICES; TRANSMISSION; PERFORMANCE; ALOHA
ISSN
1229-2370
Abstract
The large number of users and the long propagation delay of communication satellites make it difficult to deploy a random access scheme that performs well in terrestrial networks. The aim of this paper is to demonstrate that a relay architecture with unmanned aerial vehicles (UAV) between the ground and satellites can facilitate satellite access with a low overhead. We consider a TDMA-based two-level relay structure, in which users transmit data to UAVs through a random access scheme, and the UAVs forward it to the satellite with either a coordinated or uncoordinated access scheme. We show that the coordinated access for the UAV- to-satellite links can substantially improve the throughput and delay performance. We conclude that a proper scheme for resource allocation between ground-to-UAVs and UAVs-to-satellite is critical to optimize the relay network, which includes the UAV altitude, and should be based on traffic demand and the number of UAVs deployed. © 2011 KICS.
URI
http://hdl.handle.net/20.500.11750/6161
DOI
10.1109/JCN.2018.000010
Publisher
Korean Institute of Communications and Information Sciences, IEEE Communications Society
Related Researcher
  • Author Choi, Jihwan P. NCRG(Networks and Communications Research Group)
  • Research Interests Wireless and space communication systems; Cross-layer network design; 위성 통신 네트워크
Files:
There are no files associated with this item.
Collection:
Department of Information and Communication EngineeringNCRG(Networks and Communications Research Group)1. Journal Articles


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