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Contention Resolution in Msg4 during RACH procedure
In LTE and 5G NR Random Access Channel (RACH) procedure, the gNB extracts specific UE identities from Msg3 to construct Msg4 (Contention...
Venkateshu Kamarthi
Jun 3, 20254 min read
5G SA RACH Procedure– A Technical Deep Dive
Introduction The Random Access CHannel (RACH) procedure is the gateway to the 5G Standalone (SA) network. It allows the User Equipment...
Venkateshu Kamarthi
May 22, 20258 min read
UE Power ON and Cell Selection in 5G Standalone (SA)
In a 5G SA network, when the User Equipment (UE) powers on, it must detect, synchronize with, and evaluate a serving cell before...
Venkateshu Kamarthi
May 19, 20255 min read
5G SA FDD vs TDD Configurations, Field Deployments
Introduction 5G New Radio (NR) introduces flexible spectrum utilization across Frequency Division Duplex (FDD) and Time Division Duplex...
Venkateshu Kamarthi
May 16, 20254 min read
O-RAN WG4 Open Fronthaul Specifications (CUS and M-Plane) v2.0 to v17.01
Introduction The O-RAN Alliance Workgroup 4 (WG4) focuses on defining open fronthaul interfaces between the O-DU (Distributed Unit) and...
Venkateshu Kamarthi
Apr 29, 20257 min read
5G PDCCH: Structure, DCI Formats, Resource Scheduling, and Comparison with 4G LTE
The Physical Downlink Control Channel (PDCCH) is a cornerstone of 5G New Radio (NR) and 4G Long-Term Evolution (LTE) systems, serving as...
Venkateshu Kamarthi
Apr 22, 20256 min read
5G NR Synchronization Signal Block (SSB) - Time/Frequency location
Introduction The Synchronization Signal Block (SSB) is a fundamental component of 5G New Radio (NR) systems, enabling user equipment (UE)...
Venkateshu Kamarthi
Apr 16, 20258 min read
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