Title :
Cross-layer adaptation for real-time broadband multimedia over IEEE 802.16e networks
Author :
Triantafyllopoulou, Dionysia ; Passas, Nikos ; Kaloxylos, Alexandros
Author_Institution :
Dept. of Inf. & Telecommun., Univ. of Athens, Athens
Abstract :
In this paper a cross-layer adaptation mechanism for real-time broadband multimedia over IEEE 802.16e networks is presented. The proposed mechanism coordinates adaptations of the modulation order, transmission power and media encoding rate utilizing information provided by the Physical (PHY) and Medium Access Control (MAC) layers. Simulations show that the use of the proposed mechanism results in increased system capacity, reduced packet loss rates and improved power consumption even in situations of high congestion and users´ mobility.
Keywords :
access protocols; broadband networks; multimedia communication; radio access networks; IEEE 802.16e network; MAC layer; PHY layer; cross-layer adaptation mechanism; medium access control; modulation; real-time broadband multimedia; Broadband communication; Cross layer design; Delay; Downlink; Informatics; Physical layer; Power control; Proposals; Resource management; Wireless communication; IEEE 802.16e; OFDMA; adaptive modulation; cross-layer design; multi-encoding rate applications; power control;
Conference_Titel :
Broadband Multimedia Systems and Broadcasting, 2008 IEEE International Symposium on
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4244-1648-6
Electronic_ISBN :
978-1-4244-1649-3
DOI :
10.1109/ISBMSB.2008.4536679
