Energy-Efficient PCF Operation of IEEE 802.11a Wireless LAN
نویسندگان
چکیده
In this paper, we demonstrate the energy-efficient Point Coordination Function (PCF) operation of IEEE 802.11a wireless LAN (WLAN) via both transmit power control (TPC) and physical layer (PHY) rate adaptation. First, we derive the energy-consumption performance analytically for uplink data transmissions under the PCF. From the evaluation results, we observe that significant energy savings can be achieved by combining TPC with adaptive PHY rate selection. A key requirement for a transmitter to select the most energy-efficient combination of transmit power level and PHY rate is the knowledge of the path loss between the receiver and itself. We present a novel scheme for accurate path loss estimation in 802.11 WLANs. Results and conclusions presented in this paper can serve as a valuable guidance or reference for the design of future 5 GHz 802.11 WLAN systems.
منابع مشابه
Energy-efficient PCF operation of IEEE 802.11a WLANs via transmit power control
Transmit power control (TPC) has been recognized as one of the effective ways to save energy in wireless devices. In this paper, we demonstrate the energy-efficient point coordination function (PCF) operation of IEEE 802.11a wireless local-area networks (WLANs) via TPC and physical layer (PHY) rate adaptation. The basic idea is that the best transmit power level as well as the proper PHY rate a...
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