DocumentCode :
523113
Title :
Optimized cross-layer adaptation for improved resource management in wireless networks
Author :
Triantafyllopoulou, Dionysia ; Passas, Nikos ; Zervas, Evangelos ; Merakos, Lazaros
Author_Institution :
Dept. of Inf. & Telecommun., Univ. of Athens, Athens, Greece
fYear :
2010
fDate :
May 31 2010-June 4 2010
Firstpage :
373
Lastpage :
379
Abstract :
The theoretical analysis of a cross-layer mechanism for improving the quality of service of real-time applications in wireless networks is presented. The mechanism coordinates adaptations of the modulation order at the Physical layer and the media encoding mode at the Application layer, to improve packet loss rate, throughput and mean delay. With the use of Continuous Flow Modeling, the system is considered as a “fluid” queue with inflow and outflow rates representing its traffic generation and service rates, respectively. Each data source is modeled as a Markov chain, from the steady-state of which the optimal adaptation thresholds of the cross-layer mechanism are derived. Performance evaluation results show that the optimized operation of the mechanism attains a significant performance improvement compared to both the sub-optimal mechanism, and a legacy system.
Keywords :
Cross layer design; Delay; Downlink; Encoding; Physical layer; Proposals; Quality of service; Resource management; Traffic control; Wireless networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks (WiOpt), 2010 Proceedings of the 8th International Symposium on
Conference_Location :
Avignon, France
Print_ISBN :
978-1-4244-7523-0
Type :
conf
Filename :
5518786
Link To Document :
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