Method, device and system for secure distance measurement
US11489680B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2020 |
| Grant date | Nov 1, 2022 |
| Priority date | — |
| Expiry date | Nov 20, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/63
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Device for secure distance measurement being a prover (P) or a verifier (V) comprising: a receiver (R3) configured to receive a receiving signal (RS) with a transmitted message (M) encoded therein, wherein the transmitted message (M) contains a verifying bit sequence (VBS), wherein a bit of the transmission message (M) is transmitted in the transmission signal (TS) by a pulse with a pulse modulation parameter with two pulse states, and a decoder (R2) configured to decode the verifying bit sequence (VBS) from the transmitted message (M) encoded in the receiving signal (RS). The decoder (R2) is based on a transmission format of the transmitted message (M) and based on the transmitted message (M) detected in the receiving signal (RS) defines sub-periods (4) in the receiving signal (RS) in which the first path (F1, F2) of the pulses (S1, S2) of the bits of the verifying bit sequence (VBS) of the transmitted message (M) are expected in the receiving signal (RS); and the decoder (R2) decodes a pulse state of a pulse (S1, S2) of a bit of the verifying bit sequence (VBS) based on the receiving signal (RS) received during one of the defined sub-periods (4) belonging to the pulse (S1, S2) to…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.