公开(公告)号：US10772068B1

公开(公告)日：2020-09-08

申请号：US16417055

申请日：2019-05-20

Applicant: HERE Global B.V.

Inventor： Xiang Liu ,  Friedrich Hartmann ,  Christian Stade-Schuldt ,  Philo Pöllmann ,  Mohamed Ahmed

IPC: H04W64/00 ,  G01S19/51 ,  H04W4/029

Abstract: A method, system, and apparatus for estimation of a number of mobile devices include receiving one or more probe data points including a location, a session identifier, and a timestamp, constructing a trajectory including the one or more probe data points having a same session identifier, calculating a trajectory duration for the trajectory based on the timestamps of the one or more probe data points, calculating a normalized trajectory from the trajectory duration and a predetermined observation duration, and estimating the number of mobile devices from at least the normalized trajectory. A path of the trajectory is based on the location of the one or more probe data points.

公开(公告)号：US10904853B2

公开(公告)日：2021-01-26

申请号：US16996483

申请日：2020-08-18

Applicant: HERE Global B.V.

Inventor： Xiang Liu ,  Friedrich Hartmann ,  Christian Stade-Schuldt ,  Philo Pöllmann ,  Mohamed Ahmed

IPC: H04W64/00 ,  G01S19/51 ,  H04W4/029

Abstract: A method, system, and apparatus for estimation of a count of mobile devices include receiving one or more probe data points including a location and a session identifier, constructing a trajectory including the one or more probe data points having a same session identifier, constructing a trajectory including the one or more probe data points having a same session identifier and generated by one mobile device of the plurality of the mobile devices, dividing the trajectory area by an area of the observation area, and estimating the count of mobile devices in the observation area from at least the normalized trajectory area. A path of the trajectory is based on the location of the one or more probe data points expanding the path of the trajectory by a radius where a result of the expanding is a trajectory area. A result of the dividing is a first normalized trajectory area.

公开(公告)号：US10032368B1

公开(公告)日：2018-07-24

申请号：US15611483

申请日：2017-06-01

Applicant: HERE GLOBAL B.V.

Inventor： Joshua Thompson ,  Xiang Liu ,  Alex Averbuch

IPC: B60Q1/48 ,  G08G1/01 ,  G08G1/14

Abstract: An approach is provided for measuring parking duration from anonymized data. The approach involves receiving parking data indicating anonymized park in and park out events from connected vehicles. The approach also involves performing a first filtering of the parking data to remove the park out events that occur within a time interval and before a first park in event occurring within the time interval, and to remove the park in events that occur within the time interval and after a last park out event occurring within the time interval. The approach further involves performing a second filtering of the parking data remaining after the first filtering to remove park in events or park out events so that the numbers of park in and park out events are balanced. The approach then involves calculating parking duration data from the park in and park out events remaining after the second filtering.

公开(公告)号：US20200383082A1

公开(公告)日：2020-12-03

申请号：US16996483

申请日：2020-08-18

Applicant: HERE Global B.V.

Inventor： Xiang Liu ,  Friedrich Hartmann ,  Christian Stade-Schuldt ,  Philo Pöllmann ,  Mohamed Ahmed

IPC: H04W64/00 ,  H04W4/029 ,  G01S19/51

Abstract: A method, system, and apparatus for estimation of a count of mobile devices include receiving one or more probe data points including a location and a session identifier, constructing a trajectory including the one or more probe data points having a same session identifier, constructing a trajectory including the one or more probe data points having a same session identifier and generated by one mobile device of the plurality of the mobile devices, dividing the trajectory area by an area of the observation area, and estimating the count of mobile devices in the observation area from at least the normalized trajectory area. A path of the trajectory is based on the location of the one or more probe data points expanding the path of the trajectory by a radius where a result of the expanding is a trajectory area. A result of the dividing is a first normalized trajectory area.

公开(公告)号：US10169996B2

公开(公告)日：2019-01-01

申请号：US15598043

申请日：2017-05-17

Applicant: HERE GLOBAL B.V.

Inventor： Xiang Liu

IPC: G08G1/14

Abstract: An approach is provided for estimation of waiting time to park. The approach involves processing parking data from a parking area to determine a probability that all parking spots in the parking area are occupied. The parking data is collected from one or more parking sensors. The approach also involves building a remaining parking duration model for a plurality of cars parked in said all parking spots based on the parking data. The approach further involves calculating an estimated conditional waiting time to park in the parking area based on the remaining parking duration model. The approach further involves calculating an estimated unconditional waiting time to park in the parking area based on the blocking probability and the conditional waiting time to park.