Category: 5G NR
5G NR Layer 2 – Packet Data Convergence Protocol (PDCP) Overview
Introduction 5G NR PDCP is a Layer 2 protocol and overall functionality is almost same as it was in 4G LTE PDCP. PDCP layer resides between RRC on the upper […]
5G NR System Information Block Type 8 -SIB8
System Information is downlink broadcast information transmitted periodically by base station. SIB#8 is used to provide a Commercial Mobile Alert Service (CMAS) notification. CMAS is used as Public Warning System […]
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 N26 Interface – 5G to 4G Interworking
Introduction N26 interface is an interface which interconnects the 5G Core network function AMF with 4G network node MME and enables interworking between 5G to 4G and visa versa. N26 […]
Open RAN – Service Management and Orchestration (SMO)
Introduction The SMO is an automation platform for Open RAN Radio Resources and known as Service Management and Orchestration (SMO).The specifications for SMO framework are defined by Open RAN Alliance. […]
5G SA Inter gNB Handover – N2 or NGAP Handover
Introduction Mobility (Handover) in an important feature in any telecom generation and so it is in 5G. The basic handover procedure remains same as it was in legacy networks, i.e. UE reports measurement report with […]
5G NR SDAP – Service Data Adaptation Protocol
The 5G NR has introduce new mechanism to manage the Quality of Service via QoS flow and to handle QoS flow specifications has introduced a new Sublayer SDAP in air-interface […]
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. […]
5G NAS – Registration Request
5G NAS Registration Request is a 5GMM Procedure Initaiated by a UE. The network can resond as Registartion Accept in successful case or Registration Reject with specified cause value in […]
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 […]