Title :
Optimal WiMAX frame packing for minimum energy consumption
Author :
Abbas, Nadine ; Hajj, Hazem ; Yassine, Ali
Author_Institution :
American Univ. of Beirut, Beirut, Lebanon
Abstract :
Minimizing energy consumption is an urgent and challenging problem. As in any communication system, high energy efficiency in WiMAX systems should be maintained by increasing resource efficiency. Thus, WiMAX resources should be properly utilized by optimizing the construction of downlink (DL) bursts. This paper proposes an energy-efficient scheme that maximizes the use of resources at the base station (BS) by reducing the energy wasted caused by sending padding bits instead of useful data. The problem was formulated as nonlinear integer programming model. Due to the complexity of the problem, this paper presents first the formulation of the base model for optimal DL bursts construction problem assuming the packet is represented by one burst. Then, the formulation is expanded to allow the representation of packets by several bursts. The results show an improvement in data packing that maximizes the utilization of frames, and minimizes energy wastage.
Keywords :
WiMax; energy conservation; energy consumption; integer programming; nonlinear programming; DL bursts construction problem; WiMAX; base station; downlink burst; energy consumption; energy efficiency; frame packing; nonlinear integer programming; optimisation; Frequency domain analysis; Hardware design languages; Mathematical model; Optimization; Silicon; Time domain analysis; WiMAX; OFDMA; WiMAX; downlink bursts; energy; optimization; wireless networks;
Conference_Titel :
Wireless Communications and Mobile Computing Conference (IWCMC), 2011 7th International
Conference_Location :
Istanbul
Print_ISBN :
978-1-4244-9539-9
DOI :
10.1109/IWCMC.2011.5982731