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1. (WO2018222354) EXTENDING A RADIO MAP

Pub. No.:    WO/2018/222354    International Application No.:    PCT/US2018/031749
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Thu May 10 01:59:59 CEST 2018
IPC: G01S 5/02
Applicants: APPLE INC.
Inventors: BHATTI, Jahshan
MILLMAN, David Benjamin
SMITH, Brian Stephen
SINGH, Jasvinder
Title: EXTENDING A RADIO MAP
Abstract:
A method comprising: receiving a radio map of an indoor venue using survey data collected by a survey device positioned throughout the venue, the radio map including a boundary; receiving harvest data from a mobile device, wherein at least some of the harvest data are obtained by the mobile device while the mobile device is positioned at locations that are outside of the boundary; determining, based on the harvest data, a trajectory of the mobile device, wherein at least some of the trajectory resides outside of the boundary; identifying one or more locations on or proximate to the trajectory; and extending the radio map using the survey data and the one or more identified locations, wherein the extended radio map is defined at least in part by an extension of the boundary to encompass the one or more identified locations.