io Interface Frédéric Launay WILEY NG-RAN and 5G-NR NG-RAN and 5G-NR 5G Radio Access Network and Radio Interface Frédéric Launay WILEY First published 2021 in Great Britain and the United States by ISTE Ltd and John Wiley & Sons, Inc. Apart from any fair dealing for the purposes of research or private study, or criticism or review, as permitted under the Copyright, Designs and Patents Act 1988, this publication may only be reproduced, stored or transmitted, in any form or by any means, with the prior permission in writing of the publishers, or in the case of reprographic reproduction in accordance with the terms and licenses issued by the CLA. Enquiries concerning reproduction outside these terms should be sent to the publishers at the undermentioned address: ISTE Ltd John Wiley & Sons, Inc. 27-37 St George's Road 111 River Street London SW19 4EU Hoboken, NJ 07030 www.iste.co.uk www.wiley.com © ISTE Ltd 2021 The rights of Frédéric Launay to be identified as the author of this work have been asserted by him in accordance with the Copyright, Designs and Patents Act 1988. Library of Congress Control Number: 2021935849 British Library Cataloguing-in-Publication Data A CIP record for this book is available from the British Library ISBN 978-1-78630-628-9 Contents Preface Chapter 1. NG-RAN Network - Functional Architecture 1.1. Functional architecture NSA/SA 1.1.1. Option 3 1.1.2. Option 4 1.1.3. Option 7 1.2. Description of the NG-RAN network 1.2.1. The NG-RAN 1.2.2. AMF (Access management and Mobility Function) 1.2.3. SMF (Session Management Function) 1.2.4. UPF (User Plane Function) 1.3. Functional separation between the NG-RAN radio interface and the 5G core network 1.3.1. Mobile identities 1.3.2. Mobile mobility 1.4. Scheduling and QoS 1.4.1. Scheduling 1.4.2. Support for quality of service on radio link 1.5. Security architecture 1.6. Network slicing 1.7. References Chapter 2. NG-RAN Network - Protocol Architecture 2.1. The protocol architecture of the radio interface 2.1.1. Protocol stack on the Uu interface 2.1.