Detecting motion based on reference signal transmissions
US9584974B1 · kind B1 · utility
86Cited by
9References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 2016 |
| Grant date | Feb 28, 2017 |
| Priority date | — |
| Expiry date | May 11, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/345
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a general aspect, motion of an object is detected based on wireless signals. In some aspects, a receiver in a space receives wireless signals; the wireless signals are based on transmissions of a reference signal by a transmitter. Each of the received wireless signals is based on a respective transmission of the reference signal at a distinct time. Channel responses are determined based on the received wireless signals and the reference signal. Each channel response is determined based on a respective one of the received wireless signals. Motion of an object in the space is detected based on the channel responses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.