Patent ID: 9392415
Filing Date: 2016-07-12
CPC Classification: B61L,G01S,G06N,H04W

Claim Text:
1. A method comprising: obtaining, by one or more computer processors, sensor readings that are taken by a sampling mobile device in a transit system that includes a route, stations on the route, and one or more platforms at each station, each sensor reading being associated with a timestamp and a tag indicating on which portion of the transit system the reading was taken; determining, by the one or more computer processors and using the timestamps and tags of the sensor readings, an estimated motion state of the sampling mobile device at each of a plurality of time points when the sampling mobile device traveled in the transit system; determining, by the one or more computer processors and using the motion states, that the sampling mobile device traveled from a first station having a first platform and a second platform to a second station having a third platform and a fourth platform through a directed route connecting the first platform of the first station and the third platform of the second station; determining, using the motion states, a time-based probability distribution of location of a user device traveling from the first platform of the first station to the third platform of the second station along the route and a probability distribution of time the user device stays on the first platform or the third platform; and providing the probability distributions to a user device for estimating a location of the user device.