N26 Interface support

What is N26 Interface in 5G and what’s its importance?

N26 interface is an inter-Core Network interface between the MME and 5GS AMF in order to enable interworking between EPC and the NG core. Inter-RAT Mobility procedures involving mobility between LTE-EPC and 5G-NR-5GS utilize the N26 interface which enables the…

BLER in LTE-5G-NR

What is the 10% BLER target in LTE and NR?

There is a Buzz word which everyone says that BLER should be under 10%, but 10% of what? There are two scenarios where BLER calculation is taken into account – BLER Target for Radio Link Monitoring– BLER Target for PDSCH…

Radio Link Monitoring in 5G-NR

A UE when it is connected to the network, it needs to continuously monitor the Radio link for reliable communication. The UE monitor’s the downlink link quality based on the reference signal in order to detect the downlink radio link…

5G-NR RACH Trigger reasons

5G-NR RACH trigger reasons with details

There are certain conditions when UE needs to trigger RACH, even when it’s in RRC_CONNECTED mode. Below is the list of reasons when RACH Can be triggered in NSA and SA mode by a UE. NR RACH Trigger Reasons Initial…

Where is SSB located in the time domain?

SSB Burst is contained inside a 5ms time frame and up to a max of 64 SSB beams are transmitted within the 5ms time period.  A radio frame is of 10ms and the SSB burst can happen in the first…

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…