Scheduling requests for location data

A non-transitory computer-readable storage medium including instructions that, when processed by one or more processors of a mobile device, configure the mobile device to perform operations comprising:

• querying a first positioning system for first position data, the first positioning system being a pedestrian dead reckoning (PDR) sensor;
• selecting a second positioning system based on a power requirement, a latency requirement, and an accuracy requirement wherein the second positioning system comprises at least one of a component configured to access a global navigation satellite system (GNSS), a first wireless component configured to query a host device paired with the mobile device, a second wireless component configured to query wireless devices for location data, and a light component configured to transmit and receive light to determine location data;
• querying the second positioning system for second position data;
• and
• in response to the second position data being available, fusing the first position data and the second position data with a previous current position of the mobile device to generate a new current position of the mobile device;
• and in response to the second position data not being available within a threshold period of time after querying the first positioning system, selecting a second positioning system based on the power requirement, the latency requirement, the accuracy requirement, and a condition, and querying the second positioning system for third position data.

A method performed on a mobile device, the method comprising:

• querying a first positioning system for first position data, the first positioning system being a pedestrian dead reckoning (PDR) sensor;
• selecting a second positioning system based on a power requirement, a latency requirement, and an accuracy requirement wherein the second positioning system comprises at least one of a component configured to access a global navigation satellite system (GNSS), a first wireless component configured to query a host device paired with the mobile device, a second wireless component configured to query wireless devices for location data, and a light component configured to transmit and receive light to determine location data;
• querying the second positioning system for second position data;
• and in response to the second position data being available,
• fusing the first position data and the second position data with a previous current position of the mobile device to generate a new current position of the mobile device;
• and in response to the second position data not being available within a threshold period of time after querying the first positioning system, selecting a second positioning system based on the power requirement, the latency requirement, the accuracy requirement, and a condition, and querying the second positioning system for third position data.