Patent ID: 8385901

Claim:
A power-efficient method of assessing a context of a mobile device, the method comprising: determining, at a mobile device, a transition of the mobile device from a current context to an updated context, wherein the determination is based at least in part on information obtained by the mobile device during each interval of a set of intervals, wherein the obtained information is not transmitted from the mobile device, and wherein the set of intervals is based at least in part on an anticipated variance of the obtained information; and responsive to a determination of a transition: transmitting a context change notification based at least in part on the determined transition, wherein context change notifications are transmitted only in response to a determination of a transition, and modifying, without interaction with an external device, the set of intervals based at least in part on the updated context, wherein the modified set of intervals are defined by the updated context and correspond to an anticipated variance in information obtained during the updated context.