Patent ID: 9179265
Filing Date: 2015-11-03
Classification: G01S,H04W

Abstract:
1. A method comprising: receiving, by a server and from a mobile device, an indication that the mobile device is located at a venue and is requesting information for determining a venue location of the mobile device, the venue comprising a space accessible by a pedestrian and one or more constraints of movements of the pedestrian, the venue location being a location of the mobile device relative to the venue, wherein the indication includes one or more identifiers of one or more signal sources detected by the mobile device at the venue location; providing, by the server, coarse location data to the mobile device based on the one or more identifiers, the coarse location data including one or more actual or estimated locations of the one or more signal sources; receiving, by the server and from the mobile device, a coarse location, the coarse location being a location of the mobile device estimated by the mobile device using the coarse location data; and providing, by the server and to the mobile device, location fingerprint data for determining the venue location, the location fingerprint data comprising a fingerprint for the coarse location, the fingerprint including a set of one or more measurements that the mobile device is expected to receive when the mobile device measures signals of the one or more signal sources at the coarse location, wherein the server comprises one or more processors.