What is the difference between 5G NSA Options 3/3a/3x?
January 14, 2021

When you are reading 3GPP TS 37.340 for 5G NR Release 15, you’ll find on Page 7, section 4 the definition of “Multi-RAT Dual Connectivity” or MR-DC and the definition is not new as it’s already mentioned before on 3GPP Release 14 TS 36.300.  The main idea of Dual Connectivity or DC, in general, is […]

O-RAN Architecture Overview
January 12, 2021

O-RAN SC architecture follows O-RAN Alliance defined architecture. In the O-RAN architecture, the radio side includes Near-RT RIC, O-CU-CP, O-CU-UP, O-DU, and O-RU. The management side includes Service Management and Orchestration Framework that contains a Non-RT-RIC function. Components Definition near-RT RIC: O-RAN near-real-time RAN Intelligent Controller: a logical function that enables near-real-time control and optimization […]

The “Cherry” Release of O-RAN Open Software

The “Cherry” Release of O-RAN Open Software  • Cherry features significant advancements in the end-to-end integration of O-RAN Architecture components. • The software now contains new functions aligned with the latest O-RAN specifications, such as the E2, A1 or O1 interfaces. In December 2020, the O-RAN Software Community (OSC), working with the Linux Foundation, published […]

BWP Configuration & Allocation
January 5, 2021

Bandwidth Parts & Bandwidth Adaptation Basic Concepts As per the definition in TS38.300, with Bandwidth Adaptation (BA), the receive and transmit bandwidth of a UE need not be as large as the bandwidth of the cell and can be adjusted: the width can be ordered to change, e.g. to shrink during the period of low […]

2020 Year In Review
December 31, 2020

The last 12 months have seen an unprecedented amount of disruption in the Telecom industry, fueled in large part by the coronavirus pandemic. Let’s take a look back at the most important articles and posts I wrote in 2020. Open RAN  What is the difference between 4G C-RAN and 5G C-RAN? What is the difference […]

What is the Importance of massive MIMO in 5G NR?
December 29, 2020

5G new radio (NR) is conceived to provide new service types, namely, enhanced mobile broadband (eMBB), ultra-reliable and low latency communications (URLLC), and massive machine-type communications (mMTC). Among these, eMBB is expected to provide exceptionally fast data speeds to facilitate services that have high throughput requirements such as high definition (HD) video streaming, virtual reality […]

What is 5G RAN slicing?
December 20, 2020

RAN slicing builds on existing 5G network investments to facilitate the creation of next-level services for enterprises and mobile broadband (MBB) end-users while guaranteeing the fulfillment of service level agreements (SLA). What is 5G RAN slicing? In the era of 5G, efficient solutions are needed to address simultaneously services that need high bandwidth and services […]

Why do MNOs struggle to shift to Open RAN?
December 11, 2020

Why do MNOs struggle to shift to Open RAN? I know many MNOs are struggling to shift their RAN strategy to OpenRAN in their 5G Roadmap due to many reasons like they can not get away from their monolithic supply chain from the big vendors. Also, there’re some interfaces that are still NOT open even if these […]

What is the difference between RRC_IDLE and RRC_Inactive?
December 8, 2020

RRC_IDLE The UE is in the idle state when there is no RRC connection established. In RRC_IDLE: A UE specific DRX cycle may be configured by upper layers. UE monitors a paging channel for core network paging using 5G-S-TMSI or IMSI. UE performs neighbor cell measurements and cell reselection. UE acquires system information (SI). RRC_INACTIVE […]

Ericsson Mobility Report – November 2020
November 30, 2020

Ericsson Mobility Report provides industry-leading projections and analyses of the latest trends in the mobile industry, including subscription, mobile data traffic, and population coverage. Our forecasts are based on past and current data, validated with extensive network measurements. Read the report to learn about the latest figures for 5G, IoT, fixed wireless access, and more. […]

5G Fronthaul Challenge
November 26, 2020

One of the main challenges of successful 5G deployments is network densification. This challenge derives from the need for additional Capacity everywhere and from the use of higher frequency bands in the radio access network (RAN). There are two main approaches to densifying the RAN – Centralized RAN and Decentralized RAN. The decentralized approach follows the […]