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    Latency versus Reliability in LEO Mega-Constellations: Terrestrial, Aerial, or Space Relay?

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    Latency_versus_Reliability_in_LEO_Mega-Constellations_Terrestrial_Aerial_or_Space_Relay.pdf
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    Type
    Article
    Authors
    Pan, Gaofeng
    Ye, Jia cc
    An, Jianping
    Alouini, Mohamed-Slim cc
    KAUST Department
    Communication Theory Lab, King Abdullah University of Science and Technology, 127355 Thuwal, Makkah, Saudi Arabia
    Communication Theory Lab
    Electrical and Computer Engineering
    Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division
    Electrical and Computer Engineering Program
    Date
    2022-04-19
    Permanent link to this record
    http://hdl.handle.net/10754/676326
    
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    Abstract
    Large low earth orbit (LEO) mega-constellation systems have been designed and deployed as a global backbone to provide ubiquitous connectivity across the world. However, due to the high traffic load/congestion arisen from the required numerous information relay and forwarding, it is a challenge for LEO mega-constellation systems to set up long-distance connections between two remote terrestrial users for real-time communications, which requires strict low latency. Other than inter-LEO satellite links (ILSL), introducing third-party relays, such as terrestrial, aerial, and satellite relays, is an alternative way to improve the latency performance for wide-area deliveries of real-time traffic. However, the reliability of the transmitted signal will unavoidably degrade, because of the increased path-loss attributed to long-distance relaying transmissions. Then, to reveal the principle that the third-party relays affect the latency and reliability, in this work, an LEO satellite-terrestrial communication scenario is considered, in which two remote terrestrial users communicate with each other via an LEO mega-constellation system. Analysis models are built up to investigate the end-to-end time delay and outage performance while considering different ILSL, terrestrial, aerial, and satellite relay assisted transmission scenarios. More specifically, by applying geometrical probability theory, exact/approximated closed-form analytical expressions have been derived for average time delay
    Citation
    Pan, G., Ye, J., An, J., & Alouini, S. (2022). Latency versus Reliability in LEO Mega-Constellations: Terrestrial, Aerial, or Space Relay. IEEE Transactions on Mobile Computing, 1–1. https://doi.org/10.1109/tmc.2022.3168081
    Sponsors
    Supported in part by the NSF of China under Grant 62171031 and in part by the Office of Sponsored Research at KAUST
    Publisher
    IEEE
    Journal
    IEEE Transactions on Mobile Computing
    DOI
    10.1109/TMC.2022.3168081
    Additional Links
    https://ieeexplore.ieee.org/document/9760009/
    https://ieeexplore.ieee.org/document/9760009/
    https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9760009
    ae974a485f413a2113503eed53cd6c53
    10.1109/TMC.2022.3168081
    Scopus Count
    Collections
    Articles; Electrical and Computer Engineering Program; Communication Theory Lab; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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