Patent ID: 8527014

Claim:
A method comprising: placing a wireless communication device in a deep sleep mode, in which the wireless communication device does not search for service signals; periodically increasing power in the wireless communication device to initiate one or more wake-up periods; performing a service signal search in one or more frequency bands supported by the wireless communication device during the wake-up periods, wherein performing the signal service search during the wake up periods comprises: performing an acquisition database scan for a service signal supporting the wireless communication device, the acquisition database scan comprising a database scan of preloaded channels and dynamically learned channels, wherein dynamically learned channels comprise channels added and updated by the wireless communication device on which the wireless communication device previously received service; and when the acquisition database scan is unsuccessful in locating signal service, performing a limited full frequency scan; and returning the wireless communication device to the deep sleep mode when the service signal search is unsuccessful; wherein the limited full frequency scan comprises performing a full frequency scan of frequency bands supported by the wireless communication device when less than a predetermined number of service requests for supported frequency bands has been received, and in situations when both: a quantity equal to or greater than the predetermined number of service requests for supported frequency bands has been received; and a full frequency timer has expired.