Backscatter communication system
US12316436B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 3, 2023 |
| Grant date | May 27, 2025 |
| Priority date | — |
| Expiry date | Feb 17, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/72
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Described herein is a backscatter enabled device comprising: a receiver for receiving a signal in a first frequency channel including a data payload modulated onto a carrier and a constant tone extension at least part of which comprises a constant tone; energy detection means for detecting energy in the signal and initiating wait logic when, following an initial detection of energy, no energy is detected during a time period; wherein the wait logic is configured to wait for a trigger indicating that the constant tone is being received and send a start signal at the trigger; signal modulation means for receiving the start signal and, in response, modulating the constant tone based on data to be sent to produce a backscatter signal; and a transmitter for transmitting the backscatter signal. Also described herein is a transmitting device for use in a communication system comprising at least one backscatter enabled device and a receiving device and a communication system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.