University of Oulu

H. Saarnisaari, A. O. Laiyemo and C. H. M. de Lima, "Random Access Process Analysis of 5G New Radio Based Satellite Links," 2019 IEEE 2nd 5G World Forum (5GWF), Dresden, Germany, 2019, pp. 654-658. doi: 10.1109/5GWF.2019.8911737

Random access process analysis of 5G new radio based satellite links

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Author: Saarnisaari, Harri1; Laiyemo, Ayotunde O.1; de Lima, Carlos H. M.1
Organizations: 1Centre for Wireless Communications, University of Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.2 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2019
Publish Date: 2019-12-05


Integration of the satellite component into the fifth generation (5G) new radio (NR) system is an ongoing activity within the 3GPP standardization body. However, as the 5G NR system is primarily designed for terrestrial applications, its direct usage with satellite communications may raise problems whose solutions affect its underlying design principles and operation. This paper addresses this adaptation and then analyses the suitability of the 5G NR random access procedure for satellite usage. Although many of the already standardized configuration parameters and procedures are flexible enough and can be used without modifications, the timing advance (TA) calculations, its value transmission, as well as associated timers’ configuration require reworking. Furthermore, we also observed the guard interval needed by the physical random access signal may be reduced using the so called minimum common delay that has to be transmitted to the terminals.

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ISBN: 978-1-7281-3627-1
ISBN Print: 978-1-7281-3628-8
Pages: 1 - 5
DOI: 10.1109/5GWF.2019.8911737
Host publication: 2019 IEEE 2nd 5G World Forum (5GWF) 30 Sept.-2 Oct. 2019 Dresden, Germany
Conference: IEEE 5G World Forum
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This research has been supported by Academy of Finland 6Genesis Flagship (grant 318927) and the SAT5G project that has received funding from the European Unions Horizon 2020 research and innovation programme under grant agreement No 761413.
EU Grant Number: (761413) SaT5G - Satellite and Terrestrial Network for 5G
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
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