Category: 5G Physical Layer
5G NR SINR Measurement and Its Mapping
Introduction SINR is Singal to Interference Noise Ratio is a measure of signal quality. It can be defined as the ratio of wanted signal strength and the unwanted interference plus […]
5G NR Resource Allocation – Resource Allocation Type 0
Introduction To transmit and recieved data in downlink and uplink UEs need bandwidth resource allocated and this allocation provided by gNB. In 5G NR, similar to 4G the resource allocation […]
5G Carrier Aggregation – Bandwidth Classes
Carrier Aggregation (CA) increases the bandwidth by combining several carriers. Each aggregated carrier is referred to as a Component Carrier (CC). 5G NR CA supports up to 16 contiguous and […]
5G NR pdcch-ConfigSIB1 – ControlResourceSetZero & SearchSpaceZero
In 5G, during initial network access, a UE does a completes a band scan for SSB decodes the PBCH. The PBCH provides sufficient information lo allow the UE to proceed […]
5G NR RSRQ Measurements and Its Mapping
The RSRQ (Referece Signal RecivedQuality) is a measurement performed by the UE to know the Quality of recieved Reference Signals. In 5G NR, RSRQ can be measurement for SS-Reference Siganls […]
5G NR BFR – Beam Failure Recovery
The 5G communication specially at higher frequencies or mmWave is using Massive MIMO with Beamforming. Beamforming is a signal processing technique that allows gNB send targeted beams of data to […]
5G NR Downlink HARQ Codebook
In 5G NR, 3GPP specification has defined HARQ Codebook to provide the feedback to base station for Downlink data transmission i.e., PDSCH Data. UE Sends the ACK/NACK for corresponding PDSCH […]
5G NR SSB Positioning – Time and Frequency Resources
In 5G NR, Synchronization Signal Block (SSB) includes PSS, SSS and PBCH and its location compared to LTE is completed different. In LTE, Sync signal position is straight forward located […]
5G NR SS-RSRP Value Measurement Mapping
UE does measurement of SS-RSRP and use it for cell selection, cell reselection, power control, mobility procedures and beam management procedures. RSRP measurement generated and reported at both Layer 1 […]
5G NR Numerology – Subcarrier Spcaing (SCS)
In LTE, there is only type of numerology or subcarrier spacing (15 KHz), whereas in NR, multiple types of subcarrier spacing are available e.g 5G NR supports subcarrier spacing of […]