Invention Grant
- Patent Title: Indoor location estimation for wireless device
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Application No.: US16299744Application Date: 2019-03-12
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Publication No.: US10674331B1Publication Date: 2020-06-02
- Inventor: Rongsheng Huang , Shao-Cheng Wang , Jungtao Liu , Koohyun Um
- Applicant: Amazon Technologies, Inc.
- Applicant Address: US WA Seattle
- Assignee: Amazon Technologies, Inc.
- Current Assignee: Amazon Technologies, Inc.
- Current Assignee Address: US WA Seattle
- Agency: Lowenstein Sandler LLP
- Main IPC: H04W4/029
- IPC: H04W4/029 ; H04W4/33 ; G01S5/02 ; G01S1/70

Abstract:
Technology for indoor location estimation of wireless stations is described. In one embodiment, a processing device identifies a plurality of wireless stations that support a signal round-trip-time measurement protocol. The processing device associates the plurality of wireless stations with one another to form a logical grouping of the plurality of wireless stations and provides an indication of the plurality of wireless stations in the logical grouping to each of the plurality of wireless stations. The processing device receives a first round-trip-time measurement value for a signal transmitted between a first wireless station and a second wireless station of the logical grouping and a second round-trip-time measurement value for a signal transmitted between the first wireless station and a third wireless station of the logical grouping. These round-trip-time measurement values indicate a distance between the wireless stations, respectively. The processing device determines, using the first distance and the second distance, a position of the first wireless station relative to the second wireless station and the third wireless station.
Information query