DocumentCode :
2311148
Title :
An Efficient Power Management Mechanism for WiFi-Based Handheld Systems
Author :
Min, Jung-hi ; Cha, Hojung ; Srini, Vason P.
Author_Institution :
Dept. of Comput. Sci., Yonsei Univ.
fYear :
2006
fDate :
22-24 Sept. 2006
Firstpage :
1
Lastpage :
4
Abstract :
We propose a system level dynamic power management scheme that considers interaction between CPU and WNIC, and types of workload to reduce energy consumption of handheld systems. The proposed scheme determines the clock speed (voltage) for the CPU and the power mode for WNIC according to the workload type. This mechanism works based on two observations: the consumed power of WNIC is reduced when the clock speed of CPU is increased, and the power modes of WNIC and the clock speed of CPU have different values based on the kind of workload. Experimental results show that on the average the proposed scheme reduces energy consumption by 8% for BE (best effort) workload, 3% for CBR (constant bit rate) workload, and 16% for interactive when compared to DVFS (dynamic voltage and frequency scaling) for CPU and DPM (dynamic power management) for WNIC
Keywords :
computer network management; mobile computing; user interfaces; wireless LAN; CPU clock speed; WNIC; WiFi-based handheld systems; best effort workload; constant bit rate workload; dynamic voltage and frequency scaling; system level dynamic power management scheme; Bit rate; Clocks; Dynamic voltage scaling; Energy consumption; Energy management; Energy measurement; Frequency; Power system management; Voltage control; Wireless networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2006. WiCOM 2006.International Conference on
Conference_Location :
Wuhan
Print_ISBN :
1-4244-0517-3
Type :
conf
DOI :
10.1109/WiCOM.2006.409
Filename :
4149586
Link To Document :
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