Title :
Cross-layer QoS management in scheduled multi-user systems
Author :
Zerlin, Benno ; Nossek, Josef A.
Author_Institution :
Inst. for Circuit Theor. & Signal Process., Munich Univ. of Technol., Germany
Abstract :
Through the joint optimization of physical (PHY) and media access control (MAC) layer instances, the transmit power, that is necessary to serve given user requirements on throughput and delay, can be minimized. This article shows, how top-down cross-layer optimization can be extended to scheduled multi-user systems, by formulating analytical expressions for the relevant quality of service (QoS) parameters in systems with round robin (RRS), maximum throughput (MTS), and proportional fair scheduling (PFS). Based on this stochastic description, the power optimal mode of operation and the minimum transmit powers can be determined providing low complexity means for QoS management, that can be employed to maximize the system capacity.
Keywords :
access protocols; multiuser channels; optimisation; quality of service; scheduling; stochastic systems; telecommunication network management; MTS; PFS; PHY-MAC layer; RRS; cross-layer QoS management; maximum throughput scheduling; media access control; power optimal mode; power transmission; proportional fair scheduling; quality of service; round robin scheduling; scheduled multiuser system; stochastic description; Automatic repeat request; Delay; Energy management; Multiaccess communication; Power system management; Power system modeling; Processor scheduling; Signal to noise ratio; Stochastic systems; Throughput;
Conference_Titel :
Signal Processing Advances in Wireless Communications, 2005 IEEE 6th Workshop on
Print_ISBN :
0-7803-8867-4
DOI :
10.1109/SPAWC.2005.1506079
