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Category: Tech Fundas

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

DevOps – Networking Interview Questions

Networking is an essential skill for DevOps and while setting up a Lab network we need to work with Routers, Switch, hubs, doing IP planning, assigning subnets, traffic sepration using […]

September 23, 2021September 23, 2021 Author DevOps, Interviews, Linux, SmartCities, Tech Fundas, Wireless Testing

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 MAC BSR – Buffer Status Reporting

The Buffer Status reporting (BSR) is a MAC layer procedure which is used by the UE to provide information about the amount of data available for transmission in the UL […]

August 15, 2021August 16, 2021 Author 3GPP Specification, 5G, 5G Call Flow, 5G MAC, 5G MAC Layer, Tech Fundas

5G NAS – Authentication Failures Cause Values

In 5G Network, Non-access stratum (NAS) layer managed the PLMN specfic Network Failure and Authentication Failures between the 5G UE and 5G Core. Mutual authentication is a mandatory security procedure […]

July 11, 2021July 11, 2021 Author 5G, 5G Call Flow, 5G Core, NAS Signalling, Tech Fundas

5G NAS – Registration Reject Cause

In 5G NR, Registration is a NAS layer or 5G Mobility Management (5GMM) process and it is very much similar to the Attach Process in LTE except some of the […]

July 6, 2021July 11, 2021 Author 5G, 5G Call Flow, NAS Signalling, Tech Fundas

5G NAS – PDU Session Reject Cause Values and Reasons

5G connectivity service is named as PDU Session. A PDU session is very similar to an EPS bearer in LTE, except for the QoS model and the supported user data.  […]

June 27, 2021June 27, 2021 Author 5G, 5G Call Flow, 5G NR, NAS Signalling, Tech Fundas

VoNR with Robust Header Compression (ROHC)

VONR ROHC Voice Service in 5G SA, VoNR can use ROHC to compress the headers of voice packets. ROHC helps reduce header overheads of voice packets on radio links, which […]

June 4, 2021January 14, 2023 Author 5G, 5G Call Flow, Tech Fundas, Voice Services, VoNR

NGAP – NG Application Protocol over N2 Interface

In the 5G SA, NG interface is designed to interconnect gNB and 5G Core which is similar to S1 interface in 4G LTE connects eNB and EPC. Considering Control and […]

May 18, 2021May 18, 2021 Author 3GPP Specification, 5G Call Flow, 5G Core, 5G NR, Tech Fundas

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