Title :
Adaptive power control and selective radio activation for low-power infrastructure-mode 802.11 LANs
Author :
Sheth, Anmol ; Han, Richard
Author_Institution :
Dept. of Comput. Sci., Colorado Univ., USA
Abstract :
We present an integrated dual approach to reduce power consumption in infrastructure-mode 802.11 wireless LANs. A novel distributed power control algorithm adoptively adjusts the transmit power of the 802.11 radio/NIC to achieve power savings in the presence of mobility and RF noise. An adaptive radio activation algorithm selectively sleeps the 802.11 radio/NIC, to reduce idle power consumption. We analyze the performance of these algorithms in an 802.11 testbed using Web traces of HTTP/TCP user data accesses. Our application-level architecture integrates the two approaches into an incrementally deployable and application-transparent solution for power management of the RF interface on 802.11-enabled laptops.
Keywords :
IEEE standards; access protocols; network interfaces; power consumption; radiofrequency interference; transport protocols; wireless LAN; 802.11-enabled laptops; HTTP/TCP user data accesses; MAC; NIC; RF interface; adaptive radio activation; distributed power control; incremental deployment; infrastructure-mode 802.11 wireless LANs; power consumption; Adaptive control; Algorithm design and analysis; Energy consumption; Performance analysis; Power control; Programmable control; Radio frequency; Sleep; Testing; Wireless LAN;
Conference_Titel :
Distributed Computing Systems Workshops, 2003. Proceedings. 23rd International Conference on
Print_ISBN :
0-7695-1921-0
DOI :
10.1109/ICDCSW.2003.1203652