Methods and architectures for secure ranging
US11265929B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | Apr 14, 2017 |
| Grant date | Mar 1, 2022 |
| Priority date | — |
| Expiry date | Mar 23, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/47
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A secure ranging system can use a secure processing system to deliver one or more ranging keys to a ranging radio on a device, and the ranging radio can derive locally at the system ranging codes based on the ranging keys. A deterministic random number generator can derive the ranging codes using the ranging key and one or more session parameters, and each device (e.g. a cellular telephone and another device) can independently derive the ranging codes and derive them contemporaneously with their use in ranging operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.