5G Call Flow (eNB – gNB dual connectivity)

ENDC -Dual Connectivity (EN-DC) which enables 5G services and 4G network. UEs supporting EN-DC can connect simultaneously to LTE Master Node eNB and 5G-NR Secondary Node gNB. UE first register with 4G EPC through ENDC. Based on UE supportability it… Read More ›

LTE Protocol Stack

LTE Protocol stack is divided into Three Layers. Layer 1 (Physical Layer) Layer 2 (PDCP,MAC,RLC Layers) Layer 3 (NAS and RRC Layers) Functions of each Layer. NAS: 3GPP TS 24.301 EPS bearer management Authentication Paging origination EPC connection management-IDLE mobility… Read More ›

LTE Handover Concept

Types of Handover in LTE Categorization of Handover (EPC Entities are Changed or not) in three kinds Intra-LTE Handover Inter-LTE Handover Inter-RAT Categorization of Handover (EPC Entities are Involved or not) in two types X2 Handover S1 Handover Basic Concept… Read More ›