| abstract |
In one aspect, a wireless transceiver transmits and receives wireless signals, and medium access controller independently initiates transitions from a scanning state to a power conserving state and from the power conserving state to the scanning state. In the scanning state, the medium access controller directs the wireless transceiver to receive frames on at least one wireless channel and the medium access controller scans the received frames for identifiers of one or more respective target access points. In the power conserving state, the medium access controller places at least one of the wireless transceiver and the medium access controller in a low-power mode of operation. |