Patent ID: 11968591
Assignee: nan
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 17:
18. A portable device for updating a location fingerprint database for an area, the portable device comprising:
a means to collect signal measurement data while transiting a portion of the area of the location fingerprint database;
an integrated sensor assembly configured to output sensor data, the sensor data comprising motion sensor data collected while transiting the portion of the area of the location fingerprint database, the motion sensor data representing motions of the portable device and the motion sensor data comprising inertial sensor data; and
a processor configured to:
use offline non-causal processing to process the collected motion sensor data into reference positions associated with the portion of the area, wherein the non-causal processing provides an output at a certain instant of time that is a function of past, present and future inputs that are obtained from the motion sensor data at past, present and future points in time, as compared to the certain instant of time; and
employ the collected signal measurement data together with the reference positions using at least one of a plurality of processing techniques, in order to update the location fingerprint database.