5G NR and 4G LTE Radio Protocols: From Theory to Practice

This course offers a deep dive into the core principles of modern mobile networks, from 4G LTE to the cutting-edge world of 5G and beyond. Explore the fundamentals of radio access—including spectrum properties, duplexing, modulation, and multiple access schemes—before tracing the architectural and technological evolution from the mature 4G LTE standard to the revolutionary design of 5G New Radio (NR). Instructor Rahul Kaundal provides a detailed overview of both 4G and 5G systems, deconstructing the protocol stacks, from the physical layer signals and channels up to the data link and control layers. An ideal fit for engineers, technical managers, and telecom professionals who need to build a rigorous, practical understanding of how modern networks function, this course equips you with the skills to analyze network performance, troubleshoot complex signaling procedures, and navigate the underlying engineering complexities that define current and future mobile communications.

Learning objectives
Explain the fundamental building blocks of a telecom network, including the core and the Radio Access Network (RAN).
Summarize core radio frequency concepts, including spectrum bands, duplexing methods (FDD/TDD), digital modulation, and multiple access schemes like OFDMA.
Illustrate the 5G New Radio (NR) architecture, its flexible protocol stack, and the revolutionary use of Sub-6 GHz and mmWave spectrum.
Analyze the 5G physical layer, including its flexible frame structure, downlink/uplink channels (PDSCH, PDCCH, PUSCH, and PUCCH), and the initial access procedure.
Explain the data flow and functions of the 5G Layer 2 protocols (SDAP, PDCP, RLC, and MAC) in ensuring security, reliable transfer, QoS, and efficient scheduling.
Compare the 5G RRC states (Idle, Inactive, and Connected) and their role in managing device power consumption and network resources.
Deconstruct the 4G LTE protocol stack and physical layer, including its frame structure, resource grid, and the role of the cyclic prefix.
Analyze the operation of key 4G LTE physical channels (PDSCH, PDCCH, and PUCCH) and interpret DCI formats for downlink control.
Calculate 4G PDSCH resource allocation and theoretical throughput based on given network parameters.
Explain the data flow and error-correction mechanisms within the 4G Layer 2, including RLC segmentation/ARQ and MAC scheduling strategies.