Device, method and protocol for private UWB ranging
US7995644B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2005 |
| Grant date | Aug 9, 2011 |
| Priority date | — |
| Expiry date | Aug 30, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/02
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus, system, method and computer program product for secure ranging between at least two devices in radio communications with each other. In particular, an apparatus, system, method and computer program product for secure ranging between at least two devices communicating via ultra wideband (UWB) protocols. Either ternary-IR or time-hope-IR sequences are used for ranging and security. A first device transmits a range packet. A second device responds to the range packet after a delay time known only to the first and second devices. The delay time can be selected randomly by either to the first device or the second device and made known to the other device in an encrypted notification packet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.