Chapter 4. The UMTS Access Network

  1. Flavio Muratore
  1. Sergio Barberis,
  2. Daniele Franceschini,
  3. Nicola Pio Magnani and
  4. Enrico Scarrone

Published Online: 27 SEP 2001

DOI: 10.1002/0470841656.ch4

UMTS: Mobile Communications for the Future

UMTS: Mobile Communications for the Future

How to Cite

Editor Information

  1. CSELT, Telecom Italia Group, Italy

Publication History

  1. Published Online: 27 SEP 2001

ISBN Information

Print ISBN: 9780471498292

Online ISBN: 9780470841655



  • core network;
  • access network;
  • UMTS;
  • UTRAN;
  • RRC;
  • RLC;
  • MAC;
  • RRM;
  • RNC;
  • CDMA;
  • ATM


Chapter 4 deals with UMTS Access Network. In order to provide an overview of the radio access network and highlight its innovative aspects, the following topics are investigated:

  • General architecture of UTRAN, with a detailed look at AAL2 (ATM Adaptation Layer 2) and macrodiversity.

  • Architecture of the UTRAN protocols.

  • Architecture of the radio protocols, with particular attention to the RRC (Radio Resource Control), RLC (Radio Link Control) and MAC (Media Access Control) layers and the interactions between them.

  • Overview of RRM (Radio Resource Management) functionalities.