公开(公告)号：US11722593B2

公开(公告)日：2023-08-08

申请号：US17457340

申请日：2021-12-02

Applicant: NextNav, LLC

Inventor： William Alberth ,  Michael Dormody

IPC: H04M1/725 ,  H04W4/029 ,  H04W4/16 ,  H04M1/72454

CPC classification number: H04M1/72454 ,  H04W4/029 ,  H04W4/16 ,  H04M2250/02 ,  H04M2250/12

Abstract: Determining one or more heights of one or more mobile devices above surfaces. Particular embodiments described herein include machines that retrieve first data (e.g., measurement value(s) determined by sensor(s) of a mobile device or estimated position(s) of the mobile device), determine a location context based on the first data, identify second data (e.g., measurement value(s) determined by sensor(s) of the mobile device or status indicator value(s) of feature(s) of the mobile device) to retrieve for use in determining an estimated height above a surface at which the mobile device is located based on the determined location context, retrieve the second data, and determine an estimated height above a surface at which the mobile device is located based on the retrieved second data.