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 Authentication and Key Management 5G-AKA

Secure communication in any cellular network can be achieved with help of AKA procedure.  AKA is Authentication and Key Management procedure which involve mutual authentication between User Device and the […]

5G NR-PDCCH Channel Overview and Processing

The physical downlink control channel (PDCCH) in NR carries Downlink Control Information (DCI). In this post we will understand how PDCCH operates by describing its physical layer structure, and the […]

Open Stack Undercloud and Overcloud

In Open Stack, an Undercloud is the deployment cloud that contain the necessary OpenStack components to deploy and manage an Overcloud also called workload cloud or deployed cloud. The overcloud is […]