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1.      Introduction The RRC_INACTIVE state represents a fundamental architectural innovation in 5G New Radio (NR), introduced to address critical latency and signaling overhead challenges that plagued LTE networks. In LTE, frequent transitions between RRC_IDLE and RRC_CONNECTED states created substantial network signaling load and introduced latency penalties during service resumption, particularly problematic for modern smartphone usage patterns characterized by frequent sm

O-DU ↔ O-RU Interoperability Troubleshooting (O-RAN WG4 C/U, S & M Planes)  focuses on identifying and resolving functional and timing mismatches between the Distributed Unit (O-DU) and Radio Unit (O-RU) across the Open Fronthaul interface defined by O-RAN Working Group 4. It provides a systematic approach to diagnosing issues in the Control/User Plane (C/U), Synchronization Plane (S), and Management Plane (M)—the three pillars of inter-vendor interoperability. The guide emph

1. Introduction DMRS (Demodulation Reference Signals) are UE-specific reference signals in 5G NR that provide essential channel...

Introduction   What is PUCCH in 5G NR? The Physical Uplink Control Channel (PUCCH) in 5G New Radio (NR) is the channel through which the...

1.      Introduction Orthogonal Frequency Division Multiplexing (OFDM) is a powerful modulation technique used in modern wireless...

Orthogonal Frequency Division Multiplexing (OFDM) is a cornerstone of modern wireless communication systems, offering robustness against...

1. Introduction to HARQ HARQ  (Hybrid Automatic Repeat reQuest) is a critical error control method used in wireless systems like LTE and...

Introduction The Synchronization Signal Block (SSB) is a fundamental component of 5G New Radio (NR) systems, enabling user equipment (UE)...