TY - GEN
T1 - UAV-Assisted uplink transmission for ultra-reliable and low-latency communications
AU - She, Changyang
AU - Liu, Chenxi
AU - Quek, Tony Q.S.
AU - Yang, Chenyang
AU - Li, Yonghui
N1 - Publisher Copyright:
© 2018 IEEE.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2018/7/3
Y1 - 2018/7/3
N2 - In this work, we investigate the potential of using unmanned aerial vehicles (UAVs) in supporting ultra- reliable and low-latency communications (URLLC). The key idea is to leverage better link qualities provided by high possibility of line-of-sight (LoS) links in UAV communication systems. We first characterize the latency, the reliability and the network availability of UAV communication systems. We show that the probability of the existing of LoS links and the network availability are strictly concave in terms of the distance between the user and the UAV. Then, given the density of UAVs, we optimize the altitude of UAV and bandwidth allocation for minimizing the required total bandwidth of URLLC. Numerical results show that increasing the density of UAVs can remarkably reduce the total bandwidth required by URLLC in suburban areas. It is also shown that, in urban areas, using a single ground-to-air wireless link is not sufficient for ensuring the QoS and the network availability of URLLC, implying the needs of deploying multiple ground-to-air or ground-to-ground wireless links in order to support URLLC.
AB - In this work, we investigate the potential of using unmanned aerial vehicles (UAVs) in supporting ultra- reliable and low-latency communications (URLLC). The key idea is to leverage better link qualities provided by high possibility of line-of-sight (LoS) links in UAV communication systems. We first characterize the latency, the reliability and the network availability of UAV communication systems. We show that the probability of the existing of LoS links and the network availability are strictly concave in terms of the distance between the user and the UAV. Then, given the density of UAVs, we optimize the altitude of UAV and bandwidth allocation for minimizing the required total bandwidth of URLLC. Numerical results show that increasing the density of UAVs can remarkably reduce the total bandwidth required by URLLC in suburban areas. It is also shown that, in urban areas, using a single ground-to-air wireless link is not sufficient for ensuring the QoS and the network availability of URLLC, implying the needs of deploying multiple ground-to-air or ground-to-ground wireless links in order to support URLLC.
UR - http://www.scopus.com/inward/record.url?scp=85050306237&partnerID=8YFLogxK
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U2 - 10.1109/ICCW.2018.8403626
DO - 10.1109/ICCW.2018.8403626
M3 - Conference contribution
AN - SCOPUS:85050306237
T3 - 2018 IEEE International Conference on Communications Workshops, ICC Workshops 2018 - Proceedings
SP - 1
EP - 6
BT - 2018 IEEE International Conference on Communications Workshops, ICC Workshops 2018 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2018 IEEE International Conference on Communications Workshops, ICC Workshops 2018
Y2 - 20 May 2018 through 24 May 2018
ER -