The project proposes research on synchronization of wireless communication networks, highlighting radio interface-based synchronization. Studies like TS 36.300 (2019) suggest that base stations can listen to reference signals from others for aerial synchronization purposes, known as over-the-air synchronization (OTA). The Federal University of Pará (UFPA) has already conducted research on OTA and intends to continue exploring this area, using the FPGA-based SYNCUFPA testbed. Another line of investigation focuses on radio-centric synchronization architectures, where baseband (BB) and Grandmaster (GM) clocks are decoupled, allowing different levels of synchronization accuracy as needed. Previous research and the SYNCUFPA testbed support these investigations. Furthermore, the project addresses non-terrestrial networks (NTNs), especially satellite communications, which can act as a radio access network and backhaul for 5G in remote or inaccessible areas. However, NTN faces challenges such as communication delays caused by the altitude of satellites, especially GEO satellites, which have high latency. These delays impact packet retransmission and response time, affecting synchronization and initial user access. The proposal seeks to investigate the problems related to long delays in NTNs, understand how these problems arise, and identify solutions to improve the efficiency and quality of satellite communications.