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Title: Design and analysis of NB-IoT non-terrestrial networks links
Author: Fernández Rubio, Ricardo
Tutor: Cobo Rodríguez, Germán  
Others: Anguera, Jaume  
Andújar Linares, Aurora
Abstract: Internet Of Things (IoT) applications are expanding exponentially and are foreseen to play a major role in the fifth-generation mobile communication (5G) network by guaranteeing worldwide connectivity to the high number of low-cost IoT devices distributed all over the globe. In this regard, the Third Generation Partnership Project (3GPP) has introduced the Narrowband IoT (NB-IoT) technology in order to satisfy this tremendous market demand [1]. However, it is widely accepted that terrestrial networks (TN) alone are not able to serve NB-IoT market requirements. Indeed, recently approved study item 3GPP TR 36.763 Study on NB-IoT over Non-Terrestrial Networks (NTN) (Release 17) [2] highlights significant enhacements in service continuity, ubiquity, and scalability by deploying NB-IoT over Non-Terrestrial Networks (NTN). In this context, several NB-IoT NTN simulation scenarios {LEO-600, LEO-1200, GEO} will be designed and analysed, based on specifications 3GPP TR 38.821 [3], TR 36.763 [2], with MATLAB Satellite Communication Toolbox to evaluate orbital propagation evolution of NTN SATs, slant range (d), elevation angle(α), RTT (Round-Trip Time) and Doppler effect. Similarly, NTN SAT & NTN UE antenna models specified by 3GPP TR 38.811 [4] will be designed and characterized with MATLAB Antenna Toolbox, MATLAB Phased Array System Toolbox, MATLAB Sensor Array Analizer. Finally, several simulation cases (SC) will be carried out with MATLAB aiming at providing an assessment of NB-IoT NTN links budget performance (SNR, path loss, link margin, spectral efficiency, delay, capacity, power consumption) through link parameters sweeps (altitude, elevation angle, transmission modes (ST/MT), bandwidth, modulation-coding scheme (MCS), EIRP and G/T), concluding that some system design trade-offs shall be considered when designing NB-IoT NTN links depending on NB-IoT use case requirements.
Keywords: NB-IoT
non terrestrial networks
Document type: info:eu-repo/semantics/masterThesis
Issue Date: Jul-2023
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Appears in Collections:Bachelor thesis, research projects, etc.

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