Patent ID: 11917517
Assignee: APPLE INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 11:
12. An electronic device comprising:
one or more antennas;
a receiver configured to receive radio-frequency signals from an additional electronic device using the one or more antennas; and
one or more processors configured to
periodically activate the receiver during a series of receiver (RX) windows,
receive a preamble sequence in the radio-frequency signals during an RX window of the series of RX windows,
deactivate the receiver after the RX window,
re-activate the receiver during a message listening window that begins after a time offset has elapsed since an end of the preamble sequence, the time offset being based on the preamble sequence received during the RX window, and
receive a message in the radio-frequency signals during the message listening window.