Wireless network is one of the most complex system and to make sure that the Network is working as per the standards and serving the users optimally, the telecom operators perform drive tests. These tests are carried out for different reasons, some times to optimize the network and some other times to debug certain issues in a particular area. The (more ..)
Rohde&Schwarz demonstrated voice over LTE (VoLTE) and audio quality measurements with the R&S®CMW500 wideband communication tester and the R&S®UPV audio analyzer at LTE North America 2011. For the demonstration a commercial LTE USB dongle in collaboration with an IMS client running on a PC was used to simulate a VoLTE-capable device. This setup registered to an IMS server via LTE (more ..)
Nokia will publish its fourth quarter and 2011 years result on 26th January 2011. Since the last few years the largest Mobile Phone manufacturer in the world is struggling a lot due to strong competitions from smart phone manufacturers like Apple and Samsung.
Radio Link Control Protocol (RLC) is a layer 2 protocol in the UMTS system. This tutorial is an overview of RLC functionalities and architecture.
Wideband Code Division Multiple Access (WCDMA) is the physical layer used for Universal Terrestrial Radio Access (UTRA) FDD mode. The WCDMA technology provides the UMTS system some of the new functionalities on the air interface.
This tutorial covers the following topics:
UTRAN Interfaces are the most important point to start learning about the whole system. In this tutorial you can learn the following topics:
This tutorial contains some of the basics of 3G technology and network. The following topics are covered: