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Category: 5G Physical Layer

Radio Link Monitoring in 5G – RLM

Introduction When a UE  is connected to the network, it requires to continuously monitor the Radio link for reliable communication, the process is know as Radio Link Monitoring (RLM). The […]

June 6, 2022June 6, 2022 Author 5G, 5G MAC Layer, 5G NR, 5G Physical Layer, RF Optimisation, RRC Signalling

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 […]

December 6, 2021January 6, 2022 Author 3GPP Specification, 5G, 5G NR, 5G Physical Layer

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 […]

November 21, 2021November 28, 2021 Author 5G, 5G Physical Layer, New Radio, Radio Resource Management, RRC Signalling, Tech Fundas, Wireless Testing

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 […]

October 12, 2021October 12, 2021 Author 5G Network Planning, 5G Physical Layer, Tech Fundas

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 […]

September 18, 2021September 19, 2021 Author 5G, 5G Call Flow, 5G Physical Layer, Call Flow, RRC Signalling, Tech Fundas, Wireless Testing

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 […]

August 28, 2021September 21, 2021 Author 3GPP Specification, 5G Network Planning, 5G Physical Layer, RF Basics, RRC Signalling

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 […]

July 21, 2021July 22, 2021 Author 3GPP Specification, 5G, 5G Call Flow, 5G MAC Layer, 5G Physical Layer

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 […]

May 24, 2021October 4, 2021 Author 3GPP Specification, 5G, 5G NR, 5G Physical Layer

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 […]

January 31, 2021January 31, 2021 Author 5G, 5G Network Architectures, 5G NR, 5G Physical Layer, Interviews, Tech Fundas

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 […]

January 10, 2021August 28, 2021 Author 5G, 5G Physical Layer, RRC Signalling, Tech Fundas

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