Wireless positioning approach using time-delay of signals with a known transmission pattern
US8344949B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 9, 2010 |
| Grant date | Jan 1, 2013 |
| Priority date | — |
| Expiry date | Dec 2, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W64/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of determining the location of a mobile device is provided. The method receives a signal with a known radio transmission pattern at the mobile device from each of several transmitting devices. The method correlates each received signal with a corresponding signal that has a same known radio transmission pattern to determine the time the signal traveled between the corresponding transmitting device and the mobile device. The method determines the location of the mobile device based on the time the signal travelled between the corresponding transmitting device and the mobile device. In some embodiments, determining the location of the mobile device does not require calculating a distance between the mobile device and any of the transmitting devices. In some embodiments determining the location of the mobile device includes solving a function that is dependent on the time the signals traveled between each corresponding transmitting device and the mobile device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.