A power management system for managing power in a wireless device having a
SPS receiver, communication device and a power source, the power
management is described. The power management system may include a
real-time clock, an input/output device, a radio frequency front-end and
a SPS engine in signal communication with the real-time clock,
input/output device and radio frequency front-end, the SPS engine capable
of powering down itself, the input/output device and radio frequency
front-end in response to determining a mode of operation.