Description

After an evolution in our society with the use of GSM, the world of telecommunications wanted to turn definitively towards broadband. This course will provide you with the knowledge necessary for a good understanding of UMTS networks after having reviewed GSM/GPRS/EDGE networks.

Who is this training for ?

Network engineers wishing to specialize in high-speed mobile networks. Mobile network managers and study managers.

Training objectives

Training program

• Cellular architecture
  • Concepts and reminders.
  • The four generations of mobile networks.
  • Mobile radio, GSM, UMTS, LTE.
  • Methods of 'data access and transfer.
  • General structure of a mobile network.
• GSM/GPRS/EDGE networks
  • Reminder: principles and concepts maintained by 3G.
  • GSM architecture.
  • The elements making up GSM.
  • Messages and GSM protocols.
  • GPRS architecture and components.
  • EDGE.
  • High speed.
• And CDMA
  • Presentation of CDMA (Code Division Multiple Access).
  • Transmission coding.
  • Orthogonality between resources and the difficulties encountered in maintaining it.
  • Orthogonal codes and pseudo-random sequences.
  • Synchronization of CDMA communication channels.
  • Allocation of codes to users in a cell and on sending information in CDMA mode.
• The 3rd generation
  • Introduction to third generation universal networks.
  • UMTS and IMT2000.
  • Global competition in the third generation.
  • System and services proposed by UMTS.
  • The architecture of UMTS.
  • Variable bit rates.
  • Different multiplexing modes on the radio interface.
  • The core network: CN.
  • The Uu radio interface.
  • The FDD/W-CDMA and TDD/TD-CDMA modes.
  • A comparison between the two modes.
  • W-CDMA.
  • The physical, logical channels and the mapping with physical channels.
  • The method of allocating codes to terminals.
  • HDR ​​(High Data Service).
  • The cdma2000 packet service, an efficient interconnection with the Internet and the IP protocol
• Illustration: understanding CDMA
  • Power control: open loop, closed loop.
  • How to generate orthogonal codes? Illustrate the problem of synchronization and loss of orthogonality.
  • Pseudo-random sequences and desynchronization correction.
  • See a complete example of the CDMA transmission chain (coding and scrambling).