O'Reilly logo

Evaluation of HSDPA and LTE: From Testbed Measurements to System Level Performance by Martin Wrulich, Christian Mehlführer, Sebastian Caban, Markus Rupp

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 15

LTE Advanced Versus LTE

Contributed by Stefan Schwarz

Vienna University of Technology (TU Wien), Austria

The development of Long-Term Evolution (LTE) was the first step towards a fourth-generation (4G) radio access technology compatible with International Telecommunication Union (ITU) International Mobile Telecommunications (IMT)-Advanced [10]. LTE-Advanced (LTE-A) was submitted in October 2009 as a candidate radio interface technology for 4G IMT-Advanced and in October 2010 the ITU decided that LTE-A is one of the first two technologies to meet the set requirements, besides IEEE's 802.16m [9]. Although the Downlink (DL) of LTE already surpasses the requirements for a 4G technology, this is not true for the Uplink (UL) direction. Therefore, work on the next evolutionary step for LTE is ongoing in the 3rd Generation Partnership Project (3GPP) and the first backwards compatible version of LTE-A was already released at the end of December 2010 (Rel'10) [3].

This chapter is intended to give an introduction to the technological changes and enhancements introduced in LTE-A to further improve the performance of LTE. In Section 15.1 we discuss the performance requirements for a 4G radio access technology as set by the ITU. Furthermore, we compare these requirements with the performance targets defined by the 3GPP for LTE as well as LTE-A. The key enhancements for the LTE-A radio interface are briefly described in Section 15.2 and, moreover, an outlook on technologies considered ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required