Patent ID: 9335174
Filing Date: 2016-05-10
CPC Classification: G01C

Claim Text:
1. A method comprising, at a mobile device: receiving one or more data files comprising: an encoded routability graph corresponding to an indoor environment represented by an encoded map, said encoded routability graph being indicative of a plurality of feasible paths within said indoor environment, said plurality of feasible paths being indicated, at least in part, by junctions selectively interconnected by edges, and a plurality of values indicative of likelihoods of transition for said edges, at least one of said junctions being connected to three or more of said edges, wherein said values indicative of likelihoods of transition are based, at least in part, on one or more features of said encoded map, a number of predetermined possible origination paths in said encoded routability graph leading to said at least one of said junctions, and a number of predetermined possible destination paths that lead away from said at least one of said junctions; and determining an estimated position of said mobile device or an estimated direction of travel of said mobile device, or a combination thereof, based, at least in part, on at least one of said plurality of values indicative of likelihoods of transition and said encoded routability graph.