5G-NR

Idle Mode DRX in 5G NR

Discontinuous Reception (DRX) is a power-saving feature designed to extend the battery life of mobile devices. It achieves this by allowing the device to switch off its radio receiver when not expecting network communication, thus reducing power consumption significantly. DRX…

NR-DC intro

NR-NR Dual Connectivity (NR-DC)

NR-DC is the variant when the UE is connected to one gNB that acts as a Master Node and one gNB that acts as a Secondary Node. The Master Node is connected to 5GC while the Secondary Node is connected…

PDCCH ORDER 5gnr

PDCCH order in 5G NR

PDCCH order is one of the reasons for RACH trigger in both LTE and 5G-NR. If the network detects that there is DL Data to be sent to UE in its MAC Buffer and there is a UL synchronization issue…

SELF-CONTAINED SLOT

Self Contained Slot in 5G-NR?

In 5G New Radio (NR), “time slot” defines a specific time interval within the radio frame structure that facilitates data transmission and reception. Time slots play a crucial role in organizing the data flow in wireless communication systems like 5G…

Beam Correspondence

Beam Correspondence in 5G-NR

3GPP Defines Beam correspondence as to the ability of the UE to select a suitable beam for UL transmission based on DL measurements with or without relying on UL beam sweeping. The beam correspondence requirement is satisfied assuming the presence…

5G-NR Physical Layer SpecficationsOverview

5G-NR Physical Layer Specifications overview

The Physical layer specifications of 5G-NR are spread across six Specification documents and one general description document; The relation between Multiple PHY Layer specifications is illustrated below. TS 38.201: 5G NR Physical layer; General description The scope of the document…

5G NR UE Timers&Constants-2

5G NR Timers and Constants

5G NR UE Timers and Constants Below is the list of all the UE Timers and Constants in the 5G NR. All descriptions have been copied from the spec and have not been modified to keep the original information handy…

DAPS Handover-ue functionality

DAPS Handover: UE Functionality

During the NR Registration procedure, UE will include its support for Dual Active Protocol stack (DAPS) Handover in the UE Capability message. If there is no support for DAPS from UE, then the network will not configure DAPS handover for…

Dual Active Protocol Stack (DAPS) handover_feature

DAPS Handover: Release-16 Call flow

IN 5G-NR UE’s operating in RRC_Connected mode can be categorized into two types of mobilities Cell level mobility and Beam Level Mobility which are network controlled procedures. In Release-15 3GPP has introduced the inter-gNB handover procedure which is similar to…