PATENT CLAIM ANALYSIS

Application Number: 15760230
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-02
Patent Classification: ["455", "456100"]

Abstract:
The invention provides an indoor positioning method and system based on a wireless receiver and a camera, belonging to the field of positioning technology. The method in the invention comprises the following steps: a wireless receiver detects a query WIFI signal transmitted by a target device and extracts a MAC address and CSI of the target device from a query WIFI signal; a server captures the MAC address and the CSI of the target device from the wireless receiver, calculates an incident angle of the target device and the wireless receiver and sends a photographing instruction to a camera which photographs an image and uploads the image to the server; the server obtains the distance between the wireless receiver and the target device through the image pixels, and calculates the position information of the target device according to the coordinates of the wireless receiver. The invention realizes the accurate positioning of the target device by using only a wireless receiver and a camera, so that the cost can be controlled and a real-time calculation can be ensured; the combination of the two beneficial effects can help achieve good positioning results.

Claim (Index 6):
The indoor positioning method as claimed in  claim 5 , wherein in Step S 3 , the method for calculating the incident angle of the target device to the wireless receiver on the server side is as follows:\n S 31 : eigenvalue and eigenvector factorization is performed for the CSI matrix contained in the acquired data packet; S 32 : a basis function of a multi-signal classification algorithm is constructed by using the eigenvalue; S 33 : the incident angle \u03b8 in the range of 0 to 360 degrees is scanned by using a basis function, and a flight time \u03c4 in the range of 1 to 20 nanoseconds is scanned; for each pair of independent variables (\u03b8, \u03c4), when the dependent variable of the base function has a peak, an actual incident path corresponding to the independent variable is obtained; S 34 : detach the smallest independent variable of \u03c4, and the corresponding \u03b8 value in the independent variable is the incident angle \u03b8 of the target device to the wireless receiver.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 90.0
- Lexical Diversity: 2.39286
- Patent Class: 455.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['16060710', '13185455', '14568151', '14932867', '14152437']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6787725588050648
- 35 USC 102 Novelty (BERT): 0.4864211747660958
- Combined Prediction Score: 0.659537420401168
- Mean Citation Score: 147.61384800000005
- Max Citation Score: 166.14389
- Similarity Product: 110.3093486281264

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