Tiered delivery of location data

A non-transitory storage device storing instructions operable to cause one or more processors to perform operations comprising:

• determining that a location of a mobile device is within a threshold distance from a venue cluster, the venue cluster comprising one or more venues, each venue comprising a space accessible by a pedestrian and one or more constraints of movement of the pedestrian in the space;
• providing, to the mobile device, coarse location data for each venue in the venue cluster, the coarse location data comprising:
• a venue identifier of a corresponding venue and a venue bounding box of the corresponding venue, the venue bounding box representing space occupied by the venue;
• a group of one or more coarse tiles of the corresponding venue, each coarse tile comprising a coarse tile identifier and a tile bounding box, the tile bounding box representing space occupied by the corresponding coarse tile at the venue;
• and
• parameters of a probability distribution function for determining a location of the mobile device at the venue based on measurements of signals from one or more signal sources;
• receiving, from the mobile device:
• an indication that a contextual condition for downloading location fingerprint data has been satisfied, and
• a coarse tile identifier, the coarse tile identifier being determined from the one or more coarse tile identifiers based on a probability that the mobile device is located in the tile bounding box of the corresponding coarse tile;
• and
• based on the contextual condition, providing detailed location data corresponding to the coarse tile to the mobile device for determining a location of the mobile device in at least one of the one or more venues.

A system comprising:

• one or more processors;
• and
• a storage device storing instructions operable to cause the one or more processors to perform operations comprising:
• determining that a location of a mobile device is within a threshold distance from a venue cluster, the venue cluster comprising one or more venues, each venue comprising a space accessible by a pedestrian and one or more constraints of movement of the pedestrian in the space;
• providing, to the mobile device, coarse location data for each venue in the venue cluster, the coarse location data comprising:
• a venue identifier of a corresponding venue and a venue bounding box of the corresponding venue, the venue bounding box representing space occupied by the venue;
• a group of one or more coarse tiles of the corresponding venue, each coarse tile comprising a coarse tile identifier and a tile bounding box, the tile bounding box representing space occupied by the corresponding coarse tile at the venue;
• and
• parameters of a probability distribution function for determining a location of the mobile device at the venue based on measurements of signals from one or more signal sources;
• receiving, from the mobile device:
• an indication that a contextual condition for downloading location fingerprint data has been satisfied, and
• a coarse tile identifier, the coarse tile identifier being determined from the one or more coarse tile identifiers based on a probability that the mobile device is located in the tile bounding box of the corresponding coarse tile;
• and
• based on the contextual condition, providing detailed location data corresponding to the coarse tile to the mobile device for determining a location of the mobile device in at least one of the one or more venues.