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

Claim 7:
8. A computing system for maintenance of a location fingerprint database for an area, the computing system comprising:
an interface configured to receive signal measurement data together with motion sensor data from each of a plurality of portable devices transiting a portion of the area of the location fingerprint database at a first period of time, wherein the motion sensor data comprises inertial sensor data collected by a sensor assembly in each of the plurality of portable devices; and
a processor configured to:
use offline non-causal processing to process the received motion sensor data into reference positions associated with the portion of the area at a subsequent period of time, 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 received 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.