ADAPTIVE BLUETOOTH LOW POWER DISCOVERY AND WAKE UP

摘要

A method of low power discovery ( LPD) that extends the battery life of a portable Wi Fi device or portable media player ( PMP) using IEEE 802.11 interface by ensuring that PMP host processor is only on when in designated 802.11 coverage or when needed by a user, by employing probabilistic channel scanning-comprising: A) bringing an AT host equipped with an 802.11 interface to an advanced configuration and power interface ( ACPI) state S3 or equivalent sleep state, and prior to said device or media player going to sleep; and B) programming the 802.11 WLAN to wake up based on a predetermined trigger logic.