PHY

PDCCH ORDER 5gnr

PDCCH order in 5G NR

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…

SELF-CONTAINED SLOT

What is self Contained Slot?

In 5G New Radio (NR), a “time slot” refers to a discrete unit of time within the radio frame structure used for the transmission and reception of data. Time slots are an essential concept in wireless communication systems, including 5G…

Beam Correspondence

Beam Correspondence in 5G-NR

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…

5G-NR Physical Layer SpecficationsOverview

5G-NR Physical Layer Specifications overview

The Physical layer specifications of 5G-NR are spread across six Specification documents and one general description document; The relation between Multiple PHY Layer specifications is illustrated below. TS 38.201: 5G NR Physical layer; General description The scope of the document…

Reasons for RACH Failure

RACH Failure reasons in 5G-NR

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…

5G-NR MIB

5G-NR Master Information Block (MIB)

MIB is mandatory system information that is broadcasted by the gNB at a set periodicity. During the initial cell selection procedure, UE assumes that the SSB is broadcasted every 20ms by the gNB. UE gets MIB by decoding the PBCH…