dynamic power management using on demand paging for networked embedded systems
The power consumption of the network interface plays a major role in determining the total operating lifetime of wireless networked embedded systems. In case of on-demand paging, a low power secondary radio is used to wake up the higher power radio, allowing the latter to sleep for longer periods of time. In this paper we present use of Bluetooth radios to serve as a paging channel for the 802.11b wireless LAN. We have implemented an on-demand paging scheme on an infrastructure based WLAN consisting of iPAQ PDAs equipped with Bluetooth radios and Cisco Aironet wireless networking cards. Our results show power saving ranging from 23\% to 48\% over the present 802.11b standard operating modes with negligible impact on performance.
dynamic power management power use demand paging paging network embedded systems power consumption interfaces role operability lifetime wireless networks wireless case low power timing paper bluetooth scheme infrastructure standardization performance power-save