Random Access Procedure in 5G/6G Networks Integrated with Low Earth Orbit Satellites

• Eduardo Mosca UNICAMP http://orcid.org/0000-0003-3572-7691
• Tiago P. C. de Andrade UNICAMP https://orcid.org/0000-0003-2279-6671
• Rafael Pereira UNIFOR https://orcid.org/0009-0001-6789-7161
• Arthur Barata UNICAMP https://orcid.org/0009-0006-1015-3555
• Carlos A. Astudillo UNICAMP https://orcid.org/0000-0002-2407-0981

DOI: https://doi.org/10.5753/w6g.2025.9524

Abstract

In the context of mobile networks, low earth orbit (LEO) satellites can operate in various capacities, enabling the extension of coverage to remote or hard-to-reach areas where the deployment of terrestrial infrastructure is impractical. Additionally, due to their ability to provide low-latency and highthroughput communication, LEO satellites complement terrestrial networks by enhancing connectivity for moving vehicles, such as airplanes and ships, or by delivering critical emergency services in disaster-affected areas. However, few studies in the literature focus on linking existing LEO satellite technologies with mobile networks like 5G and 6G. Therefore, this article explores the use of random access techniques in LEO satellites to demonstrate advancements that enable the integration of this technology into 5G and 6G networks.

Keywords: Random Access, NTN, LEO Satellite, 5G, 6G

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