Category: Publications

O-RAN Alliance

NGMN Security Consideration of Low Layer Split in O-RAN

In this Liaison Statement from NGMN to the O-RAN Alliance, the NGMN Alliance informs O-RAN that the security of low layer split in O-RAN needs to be globally considered. Security considerations on threats depend on the deployment model and use case. NGMN therefore proposes a two-phase approach to mitigate such threats.

 

5G Devices Categorization

5G Devices Categorization

The purpose of this document is to provide a use-case based categorization of 5G Devices implementing 3GPP Rel-15 relevant Technical Specifications.

In particular, 5G Devices coming to market between 2H 2019 and 1H 2020 are addressed.

For each 5G Devices category (among eMBB, Fixed Wireless Access and Industrial), a set of mandatory and recommended features is defined.

 

Precom NW Trials Conclusions

Pre-Commercial Networks Trials Major Conclusions

Given the freeze of 3GPP Release 15 5G standards and the onset of some initial 5G commercial deployments in countries such as South Korea, many operators accelerated their 5G trials in 2019.

As a part of NGMN 5G Trial and Testing Initiative (TTI) project, some major NGMN operators, shared their initial 5G trial results.

Pre-commercial network trials phase of 5G TTI aims to consolidate the results from different operators and reach some major conclusions.

Overall, this consolidation effort, which gathers Trial reports mostly performed using a common methodology, permits to draw some very promising conclusion on the performances of early 5G implementations. Additionaly, it brings as well some observations that could lead to future improvements.

 

Small Cell Cost Sharing

Ideas for Small Cell Cost Sharing – Short Report

There is a long held vision of very high capacity networks using small cells in areas of high demand. With the expected availability of large quantities of mmWave spectrum for 5G, this opportunity in principle becomes even greater. But the economics of small cell deployment have proved very challenging in practice – and this challenge will only increase at mmWave frequencies, where coverage of an individual cell is typically even smaller. Unless the industry can find ways to reduce the per cell building, operation and maintenance costs, the opportunity to build out small cell networks using mmWave spectrum will be severely constrained.

NGMN carried out a study to identify and assess different approaches to improving the economics of small cells through some form of cost sharing between operators (with 5G small cells typically anchored to a 5G or LTE coverage layer). This short public report presents the most important and interesting ideas arising from that study. A fuller report from the NGMN study is also available

 

Small cell Cost Sharing

Small Cell Cost Sharing – Full Report

There is a long held vision of very high capacity networks using small cells in areas of high demand. With the expected availability of large quantities of mmWave spectrum for 5G, this opportunity in principle becomes even greater. But the economics of small cell deployment have proved very challenging in practice – and this challenge will only increase at mmWave frequencies, where coverage of an individual cell is typically even smaller. Unless the industry can find ways to reduce the per cell building, operation and maintenance costs, the opportunity to build out small cell networks using mmWave spectrum will be severely constrained.

This NGMN report aims to identify and assess different approaches to improving the economics of small cells through some form of cost sharing between operators (with 5G small cells possibly anchored to an LTE coverage layer). This study considers different economic models (including such as independent “neutral host” or jointly owned infrastructure companies) as well as technology aspects.

 

Non-Terrestrial Networks Position Paper

Non-Terrestrial Networks Position Paper

NGMN’s Extreme Long-Range Communications for Deep Rural Coverage project presented in paves the way for the study of cellular coverage for sparsely populated areas. In this study, a number of Mobile and Satellite Technologies that could provide coverage to remote areas have been analysed and studied.

The present paper elaborates on that recommendation, providing an overview and analysis of non-terrestrial cellular technologies that can provide coverage to remote areas.

 

Verticals URLLC Requirements

5G E2E Technology to Support Verticals URLLC Requirements

The aim of this work is to illustrate how 5G end-to-end deployment can meet vertical requirements and also highlight what are the main 5G URLLC technology enablers for use cases identified in the report. Some of these new use cases impose extremely low latency and high reliability requirements on 5G system from end-to-end perspective. This report also briefly describes 5G URLLC enablers along with reference architecture for specific use case and further evaluate how 5G URLLC can enable such use cases.

Continuous Delivery in Telecom Networks

Continuous Delivery in Telecommunication Network Environments

Today, production networks are strictly separated from test networks and development environment networks for security and operational reasons. This gap between “Continuous Integration” automation in one network zone and deployment automations in other network zones hinders seamless “Continuous Delivery” automation.

This white paper focuses on solving the this challenge.

5G E2E Architecture Framework

5G End-to-End Architecture Framework v3.0.8

The purpose of this document is to provide a high-level framework of architecture principles and requirements that provide guidance and direction for NGMN partners and standards development organisations in the shaping of the 5G suite of interoperable capabilities, enablers, and services. It builds on the architectural concepts and proposals implied by the NGMN White Paper and subsequent deliverables published by NGMN.

 

The elements of functional virtualisation shift of computing to the edges of the network, and leveraging of spectrum distribution and flexibility, are among the dominant themes that shape the 5G ecosystem. Optimisation of operational and performance efficiencies, while creating and delivering an exceptional and customisable user experience is of paramount significance.

Joint NGMN/WBA RAN Convergence White Paper

Joint NGMN/WBA RAN Convergence Paper

In order to examine the best future solutions for convergence of Wi-Fi and 5G, this paper examines the current Wi-Fi interworking solutions available for 4G systems using either trusted or untrusted Wi-Fi access, through either Core Network based or RAN level integration. It also reviews the 3GPP 5G system approach to Wi-Fi access, which includes integration of untrusted Wi-Fi access in Release 15 and the new opportunities in Release 16 for trusted Wi-Fi access as well as wireline and cable modem access such as from a residential gateway. Release 16 specified Access Traffic Steering, Switching and Splitting (ATSSS) functionality is analyzed which enables data session over one or more concurrent accesses.