NG-RAN and 5G-NR

5G Radio Access Network and Radio Interface

NG-RAN and 5G-NR

Frédéric Launay, University of Poitiers, France

ISBN : 9781786306289

Publication Date : September 2021

Hardcover 286 pp

165.00 USD



NG-RAN and 5G-NR describes the deployment of 5G NSA (non standalone 5G) and 5G-SA (standalone 5G).

5G-NSA deals with radio access entities. For the 5G-NSA mode, dual MR DC connectivity is based on radio measurements, allowing the master 4G base station MeNB to add or remove a secondary 5G node SgNB.

This book describes the architecture of the NG radio access network and the 5G-NR radio interface according to the 3GPP (3rd Generation Partnership Project) specifications.

The overall architecture of the NG-RAN, including the NG, Xn and F1 interfaces and their interaction with the radio interface, are also described. The 5G-NR physical layer is mainly connected by implementing antennas, which improves transmission capacity.
5G-SA deals with the 5G Core network. In the 5G-SA model, the mobile is attached to the 5G Core network through NG-RAN.
The book explains radio procedure, from switching on a device to establishing a data connection, and how this connection is maintained even if mobility is involved for both 5G-SA and 5G-NSA deployment.

NG-RAN and 5G-NR is devoted to the radio access network, but mobile registration, establishment procedures and re-establishment procedures are also explained.


1. NG-RAN Network – Functional Architecture.
2. NG-RAN Network – Protocol Architecture.
3. NG-RAN Network – Procedures.
4. 5G-NR Radio Interface – The Physical Layer.
5. 5G-NR Radio Interface – Operations on the Frequency Bands.
6. 5G-NR Radio Interface – MIMO and Beamforming.
7. 5G-NR Radio Interface – Bandwidth Part.
8. 5G-NR Radio Interface – Data Link Layer.
9. 5G-NR Radio Interface – Radio Access Procedure.

About the authors/editors

Frédéric Launay is an Associate Professor at the LIAS laboratory and a teacher in networks and telecommunications at the University of Poitiers, France. He also leads training on the 4G, 5G, SIP and IMS networks.