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…
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…
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…
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…
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-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 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…