Title :
Multiple QoS support using M-LWDF in OFDMA adaptive resource allocation
Author :
Kim, Kanghee ; Koo, Insoo ; Sung, Seokjin ; Kim, Kiseon
Author_Institution :
Dept. of Inf. & Commun., K-JIST, Gwangju, South Korea
Abstract :
In this paper, we consider multiple quality of service (QoS) support by using modified largest weighted delay first (M-LWDF) discipline in the adaptive resource allocation of the orthogonal frequency division multiplexing (OFDM) multiple access (OFDMA) systems. We propose a M-LWDF (M Andrews et al., Feb. 2001) based on subchannel assignment, which can satisfy different QoS requirements of services including delay-sensitive and data rate-sensitive traffics in OFDMA systems. The simulation shows that the proposed M-LWDF based subchannel assignment provides controlled QoS provisions while maintaining both the stability of scheduling discipline and the flexibility of the multiple QoS support.
Keywords :
Internet; OFDM modulation; channel allocation; frequency division multiple access; quality of service; radio networks; resource allocation; stability; telecommunication control; telecommunication traffic; OFDMA systems; QoS support; adaptive resource allocation; data rate-sensitive traffic; delay-sensitive traffic; modified largest weighted delay first; orthogonal frequency division multiplexing multiple access; quality of service; stability; subchannel assignment; Base stations; Communication system control; Delay; Downlink; Fading; OFDM; Quality of service; Resource management; Web and internet services; Wireless communication;
Conference_Titel :
Local and Metropolitan Area Networks, 2004. LANMAN 2004. The 13th IEEE Workshop on
Print_ISBN :
0-7803-8551-9
DOI :
10.1109/LANMAN.2004.1338435
