Patent ID: 8489066

Claim:
A mobile device configured to maintain a location fix while limiting network data traffic, the mobile device comprising: a processor; a location determining function that can operate using a first location determining method that requires network data access, and can operate using a second location determining method that sometimes requires network data access and sometimes does not; a voice channel for wireless communication; an input interface for receiving inputs from a user of the mobile device; and a memory holding instructions that configure the mobile device to, when the instructions are executed by the processor: obtain a location fix using the first location determining method; store the location fix in memory; repeatedly request additional location fixes using the second location determining method, the repeated requests being separated in time by at least a first predetermined interval; store any location fixes received using the second location determining method in the memory; and when a predetermined number of requests to determine location using the second location determining method have failed, obtain a new location fix using the first location determining method only if a second predetermined interval has elapsed since the most recent use of the first location determining method.