Academic theses (1)
Tuomas Huikko, “Comparison of 5G NR and DVBS2X/RCS2 technologies in broadband satellite systems“, Bachelor’s thesis, Tampere University, 2023.
This thesis compares the Fifth Generation New Radio (5G NR) standard in Non-terrestrial Networks (NTN) and Digital Video Broadcasting (DVB) standards Second Generation Satellite Extensions (S2X) and Return Channel via Satellite 2 (RCS2).
The intent of this work is to help understand the operational conditions and system architectures the technologies can operate in, the functionalities they offer and how the technologies perform in said conditions and architectures.
Conference articles (2)
Lauri Sormunen, Henrik Martikainen, Jani Puttonen, Dorin Panaitopol, “Coexistence of terrestrial and non-terrestrial networks on adjacent frequency bands”, International Journal of Satellite Communications and Networking, 2023;1 – 14, Special Issue Paper, Wiley.
This paper presents the latest achievements concerning 3GPP Release-17 adjacent band coexistence simulation work on 5G new radio non-terrestrial networks (NTNs) for satellite communications. For the first time, 3GPP considered the introduction of mobile satellite service (MSS) frequency bands for 3GPP user equipment (UE) direct connectivity with satellites and had to consider the coexistence in adjacent bands with terrestrial networks (TNs).
This paper will further explain the most challenging and the main surprising outcomes of this work, which opened new market opportunities for both terrestrial and non-terrestrial stakeholders.
The main conclusions can be summarized as follows: (1) NTN UE can reuse the current requirements of the TN UE, (2) the satellite connectivity does not require a dedicated satellite waveform, and (3) TN can co-exist with NTN on adjacent channels with relaxed ACIR requirements for the tested simulation scenario.
Henrik Martikainen, Lauri Sormunen, Aaro Leikari, Jani Puttonen, Arunprakash Jayaprakash, Vaia Kalokidou, Michael Fitch, Barry Evans, “Coexistence analysis of non-terrestrial (NTN) and terrestrial (TN) 5G networks in the millimetre bands (FR2)”, Ka and Broadband Communications Conference, Bradford, the UK, October 24-26, 2023.
This paper outlines the current Terrestrial Network (TN) and Non-Terrestrial Network (NTN) co-existence status in general. The focus is on Frequency Range 2 (FR2) band and the ongoing 3GPP RAN4 FR2 TN-NTN adjacent channel co-existence study.
The study scenarios and methodologies are presented along with a system level simulator C-DReAM which is used in the simulation work of the European Space Agency (ESA) project called “Satellite Performance Evaluation for Coexistence with Terrestrial Radio Applications” (5G-SPECTRA).
The first results are positive for the TN-NTN co-existence. However, several challenges are identified which are further researched during the project along with TN-NTN coexistence with FR1 mobile broadband and IoT-NTN use cases.
