Non-Cell Defining SSB (NCD-SSB)
What is NCD-SSB and why is it needed and what’s the use case here ? In Release-15 the term CD-SSB was referred to the SSB that accompanies RMSI i.e. the MIB of the CD-SSB carries information of the scheduled SIB1…
5G-NR
Cell Defining SSB (CD-SSB)
A PCell is always associated with a CD-SSB located on the synchronization raster. In NR Cell selection and Cell re-selection are always based on CD-SSBs located on the synchronization raster. The UE searches the NR frequency bands and for each…
Delta signaling in 5G NR
In 5G New Radio (NR), delta signaling refers to a signaling mechanism used to efficiently transmit control information between the base station (gNB) and user equipment (UE). It’s designed to reduce overhead and improve spectral efficiency in the wireless communication…
Scheduling Request in 5G-NR
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…
NR-NR Dual Connectivity (NR-DC)
NR-DC is the variant when the UE is connected to one gNB that acts as a Master Node and one gNB that acts as a Secondary Node. The Master Node is connected to 5GC while the Secondary Node is connected…
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 in 5G-NR?
In 5G New Radio (NR), “time slot” defines a specific time interval within the radio frame structure that facilitates data transmission and reception. Time slots play a crucial role in organizing the data flow in wireless communication systems like 5G…
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…
Can the Same 5G Cell be used for NSA and SA?
Can the Same 5G Cell be used for NSA and SA ? The Short answer is Yes. The network can configure the same cell as an NSA and SA cell. Initially, the operator might deploy the cell as an NSA…
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…