PATENT CLAIM ANALYSIS

Application Number: 16522643
Application Type: Utility
Filing Date: 2019-07
Publication Date: 2019-11
Patent Classification: ["455", "456100"]

Abstract:
A location engine that estimates the barometric pressure measurement bias of a wireless terminal, resulting in an improved estimate of elevation of the wireless terminal. The location engine generates an estimate of measurement bias by comparing the barometric pressure measured by the wireless terminal while at that elevation and the barometric pressure that corresponds to an estimated elevation of the wireless terminal when it made the pressure measurement (i.e., the expected pressure). The estimated elevation is based on an inferred above-ground height and the local terrain elevation, and the expected pressure is based on the measurement of barometric pressure at the pressure reference and the estimated elevation. The location engine infers the height based on various techniques disclosed herein. The location engine can use the measurement bias to adjust subsequent pressure measurements reported by the wireless terminal, in order to generate an improved estimate of elevation of the wireless terminal.

Claim (Index 1):
A method of estimating the elevation of a wireless terminal, the method comprising:\n generating, by the wireless terminal, an estimate of movement of the wireless terminal; taking a first set of samples of barometric pressure, by the wireless terminal while at a first location, resulting in a first measurement of barometric pressure made by the wireless terminal; inferring, from the estimate of movement of the wireless terminal, an inferred height of the wireless terminal; generating a first estimate of bias of barometric pressure measured by the wireless terminal based on: (i) the inferred height of the wireless terminal, and (ii) the first measurement of barometric pressure made by the wireless terminal; taking a second set of samples of barometric pressure, by the wireless terminal while at a second location, resulting in a second measurement of barometric pressure made by the wireless terminal; obtaining an estimate of a lateral location of the wireless terminal; and generating an estimate of the elevation of the wireless terminal based on:\n (i) the estimate of the lateral location of the wireless terminal, \n (ii) the second measurement of barometric pressure made by the wireless terminal, and \n (iii) the first estimate of bias.

Metadata:
- Claim Count in Document: 36.0
- Percentile: 100.0
- Lexical Diversity: 2.59677
- Patent Class: 455.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15982726', '16028706', '16369511', '14472600', '14960577']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.746717242158351
- 35 USC 102 Novelty (BERT): 0.560336762315693
- Combined Prediction Score: 0.7280791941740852
- Mean Citation Score: 374.34029
- Max Citation Score: 433.68213
- Similarity Product: 400.7874395360255

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test