Learn pre-data operations in NTN, including cell search, satellite network acquisition, random access, RRC connection setup, registration, attach, PDU sessions

Explore Optical Communication for NTN, Free Space Optical Communication (FSO), laser communication, ISL, feeder links, NTN architecture, benefits, challenges

Explore Enhanced QoS for NTN in 5G NR, including 5QI, Packet Delay Budget, 3GPP Release 17, GEO satellite latency, packet error rate and QoS optimization.

Explore different types of NTN devices, including 5G smartphones, VSATs, ESIMs and IoT devices. Understand transmit power, antenna gain, polarization

Explore optical communication for NTN, including Free-Space Optical (FSO) technology, laser-based ISLs, feeder links, 5G NTN architecture, benefits, challenges

Learn how Earth-fixed Tracking Areas, multiple TACs, SIB1 updates, and 3GPP Release 17 reduce unnecessary UE registration signaling in 5G NR NTN networks.

Explore transparent payload NTN architecture, satellite platforms, NTN Gateways, control functions, NR-Uu signal forwarding, beam mapping, ephemeris and 3GPP

Explore 5G NTN network architectures, transparent and regenerative satellite payloads, gNB CU/DU, inter-satellite links, single connectivity, multi-connectivity

Explore NTN architectures in 2026, including transparent and regenerative payloads, multi-connectivity, 3GPP releases, optical links and 5G NTN

Explore 3GPP Solutions to the NTN Challenges, mobility, HARQ, timers, and QoS. Learn how Apeksha Telecom supports 5G NTN skills.

Explore Long-Term Signal Strength Characteristics in NTN, RSRP limitations, satellite mobility and handover solutions with Apeksha Telecom.

Explore NTN cell size, HAPS and satellite coverage, propagation delays, radio resources, and 5G NTN challenges with Apeksha Telecom.

Learn how High and Variable Doppler Shifts in NTN affect 5G satellite communication, OFDM, frequency synchronization, and Doppler pre-compensation in 2026.

Explore the major challenges of Non-Terrestrial Networks (NTN) in 2026, including propagation delay, Doppler shift, synchronization, mobility, link

Learn 5G System Architecture, 5G Core Network Functions, AMF, SMF, UPF, SBA, network slicing, edge computing, and 5G protocols in this complete guide.

Learn how Wireless IoT technologies such as LTE-M and NB-IoT work with the 4G EPC network. Explore LPWA IoT, MME, S-GW, P-GW, SCEF, NIDD

Learn about 3GPP-defined wireless IoT technologies, LTE-M, NB-IoT, 5G New Radio, 5G Core, eMBB, URLLC and mMTC, including architecture, features

Pre-5G Satellite Systems 5G-based Non-Terrestrial Networks (NTNs) are expected to become increasingly common in the coming years. At the same time

In a Non-Terrestrial Network (NTN), different types of beams can be used to provide radio coverage over the Earth's surface. According to the 3GPP approach

As discussed in Chapter 1, the Uncrewed Aircraft Systems (UASs) considered in this book as part of the Non-Terrestrial Networks (NTN)