Seminars > TR108-9: UMTS - The Air Interface :Introduction to the 3GPP Air Interface (FDD)Code: TR108-9 Radio Communication
Dipl.-Ing Reiner Stuhlfauth, Rohde & Schwarz
The radio communications networks of the third generation are widely deployed and in functional operation. Those UMTS Networks complying to the 3GPP standard facilitate multimedia mobile services that were up to now unthinkable. This is made possible in the air interface by the so-called WCDMA technology. In particular the development of send and receive fittings for the radio interface which require new perspectives to be considered. In this way signals will be seemingly transferred below the channel noise, as well as completely different and independent usable signals transmitted at the same time by a transmitter in the same frequency with different relative powers. Highly complicated mechanisms for the synchronisation on to radio cells as well as the maintenance of a radio connection have to be implemented, such as a high-frequency transmit power control (TPC) or a cleverly devised hand-over mechanism.
This seminar gives an introduction to the fundamental principals and mechanisms in the 3GPP air interface. The content applies to and builds on the topics dealt with in the CDMA basics seminar (TR108-2), especially the 3GPP standard. Thus the main point is the physical layer of the OSI model. The different channel types and their tasks are discussed in detail, as well as fundamental physical system parameters that are necessary for the operation of the air interface. Te sequences for the establishment and maintenance of a radio channel are also considered. To round off the different topics the necessary measurement technology, particularly that for the WCDMA air interface is viewed.
Introduction to the 3GPP WCDMA
UMTS system architecture, components and their interplay
Channel structure of the 3GPP air interface (logical and physical channels, transport channels)
Channel coding and spread spectrum, Interleaving and modulation in Uplink and Downlink
The multiple radio channel and its modelling
Cell selection and synchronisation, tasks of the receiver
Protocol layer aspects: Radio Resource, Mobility Management, Session Management
Establishment and operation of a radio channel
Fundamental measurements in the air interface
This course is aimed at engineers and technicians from the fields development, production, quality-testing, certification and network operation, as well as technically interested people. The seminar is for GPRS end products, specialist personnel the GSM network operators and participants who have an interest in GPRS signalling on the air interface. The seminar is designed as a continuation of the information presented in TR 108-2, or rather as a 3GPP introductory seminar provided the basics of digital radio communication and CDMA transmission technology are already known.