Introducing a comprehensive poster detailing the 5G NR Cell Scan Procedure and RACH Procedure. This visual guide offers a step-by-step overview of how UE initiate’s the cell scan procedure upon powering on, delving into the intricacies of 5G cell scanning.…
Beam Failure detection and recovery is a very important procedure in 5G NR. I will try to explain the details in this post with as many details as possible. I will start with giving an overall idea in simple terms…
Discontinuous Reception (DRX) is a power-saving feature designed to extend the battery life of mobile devices. It achieves this by allowing the device to switch off its radio receiver when not expecting network communication, thus reducing power consumption significantly. DRX…
The concept of Scheduling request is same for LTE and 5G NR. Scheduling request is way for UE to tell the network that it has some data in its MAC buffer and it needs PHY resources in Uplink to send…
PDCCH order is one of the reasons for RACH trigger in both LTE and 5G-NR. If the network detects that there is DL Data to be sent to UE in its MAC Buffer and there is a UL synchronization issue…
3GPP Defines Beam correspondence as to the ability of the UE to select a suitable beam for UL transmission based on DL measurements with or without relying on UL beam sweeping. The beam correspondence requirement is satisfied assuming the presence…
RACH Failure can happen due to Multiple issues and there might be multiple reasons, I have listed down a list of RACH Failure reasons that can happen in 5G-NR. RACH process is a PHY/MAC Level procedure, but the RACH Configuration…
In the intricate world of 5G networks, the Random Access Channel (RACH) serves as a vital gateway for User Equipment (UE) to establish initial communication with the network. While RACH is commonly associated with UE transitions from idle mode to…
In the 5G-NR RACH process, the gNB’s ability to configure Contention Free RACH to UE hinges on transmitting specific dedicated information. This includes the SSB index, PRACH Preamble, and RACH Occasion. For CFRA RACH to be initiated, the network must…