techlteworld

5G-NR RRC STATES

Radio Resource Control (RRC) states for NR There are Three RRC states in NR RRC IDLE RRC CONNECTED RRC INACTIVE Note :UE in RRC IDLE cannot┬ámove to RRC INACTIVE RRC IDLE To complete cell selection and cell reselection ,the SI… Read More ›

ORAN Introduction

Introduction Before understanding the architecture of ORAN, First we need to understand the LTE architecture which consist of EPC,eNB and the RF Antenna Unit. The functions in LTE RAN are split so that the Baseband Unit (BBU) and the Remote… Read More ›

5G-NR Frame structure

Numerology – Subcarrier Spacing As we know in LTE we have only one type of subcarrier spacing i.e. 15Khz. NR support multiple type of subcarrier spacing. NR supports a flexible OFDM numerology with subcarrier spacings ranges from 15 kHz to… Read More ›

5G Architecture

Non-standalone E-UTRA-NR Dual Connectivity (EN-DC). UE is connected to NR and LTE simultaneously. One eNB can be connected to many gNB and vice versa Non-Standalone Base Station Architectures using the 4G Core Network (Options 3,3a and 3X) In both cases,… Read More ›