Ending the 802.11 Network Card Power Drain

By Jim Geier Wireless LANs certainly provide the freedom of mobility as we use our laptops and PDAs without the constraints of network cabling. Of course to facilitate this benefit, we unplug our devices from AC power and operate them from batteries. As most of know, however, 802.11 network cards consume significant amounts of energy that drains batteries fast. To prolong battery life, the 802.11 standard defines an optional "power save mode," which is available on most 80211 NICs...n

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