Talks and Poster Presentations (without Proceedings-Entry):

W. Karner:
"Link Error Analysis and Modeling for Cross-Layer Design in UMTS Mobile Communication Networks";
Talk: COST 2100 - "Pervasive Mobile & Ambient Wireless Communications" - Short Term Scientific Mission "Enhanced Cross-Layer Scheduling for Video Transmission over Multi-Carrier Systems", Bologna, Italy (invited); 01-10-2008 - 01-17-2008.

English abstract:
Particularly in wireless communications, link errors severely affect the quality of the services due to the high error probability and the specific error characteristics (burst errors) in the radio access part of the network. In this talk it is shown that thorough analysis and appropriate modeling of radio-link error behavior are essential to evaluate and optimize higher layer protocols and services. They are also the basis for finding network-aware cross-layer processing algorithms which are capable of exploiting the specific properties of the link error statistics, such as predictability. This talk presents the analysis of the radio link errors based on measurements in live Universal Mobile Telecommunication System (UMTS) radio access networks as well as new link error models originating from that analysis. It is shown that the knowledge of the specific link error characteristics leads to significant improvements in the quality of streamed video by applying the proposed novel network- and content-aware cross-layer scheduling algorithms.

UMTS, link error model, error prediction, scheduling, cross-layer, H.264/AVC, video streaming

Created from the Publication Database of the Vienna University of Technology.