An efficient power management scheme with SDMA for IEEE 802.15.3 WPANs.

SUMMARY IEEE 802.15.3 is devised for short-distance wireless connectivity within a wireless personal area network (WPAN). In WPANs, a power management (PM) mechanism is used for power saving. The PM enables devices to sleep for one or more superframes in order to conserve power. Space division multiple access (SDMA) is a new technology to optimize performance of current and future mobile communication systems. In this paper, we propose an SDMA-based PM scheme, called enhanced min-degree searching (EMDS) for WPANs. EMDS orders the streams among multiple devices to minimize the total wake-up times. In this scheme, every device that can transmit data at the same time is checked using the SDMA. The total wake-up times will be reduced substantially if the majority of the devices can transmit data at the same time. Simulation results show that the performance of the proposed EMDS outperforms that of the existing approaches. Copyright © 2013 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]