Data transmitter modifying a standard-based radio signal

Patent metadata

Field	Value
Publication number	US-11044127-B2
Application number	US-201615217069-A
Country	US
Kind code	B2
Filing date	Jul 22, 2016
Priority date	Jul 23, 2015
Publication date	Jun 22, 2021
Grant date	Jun 22, 2021

Abstract

Embodiments of the present invention provide a data transmitter for transmitting a radio signal, the data transmitter being configured to modify a standard-based radio signal in order to transmit a modified radio signal, the amplitude of which, in a frequency band, additionally has a bit sequence.

First claim

The invention claimed is:

1. A system comprising:
a data transmitter for transmitting a radio signal, the data transmitter being configured to modify a standard-based radio signal in order to transmit a modified radio signal, wherein an amplitude of the modified radio signal additionally comprises, in a frequency band, in a time domain, a bit sequence; and
a data receiver, the data receiver comprising an RF transceiver and an additional RF receiver;
wherein the RF transceiver is configured to transmit and receive standard-based radio signals at least in the frequency band in order to form a radio connection to the data transmitter, wherein the data receiver is configured to disable the RF transceiver when there is no active radio connection between the data receiver and the data transmitter; and
wherein the RF receiver is configured to monitor the frequency band in order to recognize the modified radio signal from the data transmitter using the bit sequence, wherein the data receiver is configured to enable the RF transceiver responsive to having recognized the modified radio signal of the data transmitter.

2. The system in accordance with claim 1 , the data transmitter being configured to modify the standard-based radio signal in the high-frequency range in order to acquire the modified radio signal.

3. The system in accordance with claim 1 , the data transmitter being configured to modify the standard-based radio signal by a modulation of a high-frequency carrier of the radio signal in order to acquire the modified radio signal.

4. The system in accordance with claim 1 , the data transmitter being configured to modify an amplitude of the standard-based radio signal in order to transmit the modified radio signal.

5. The system in accordance with claim 1 , the data transmitter being configured to comprise the bit sequence in correspondence with an amplitude modulation.

6. The system in accordance with claim 1 , the data transmitter being configured to comprise the bit sequence in correspondence with an OOK modulation.

7. The system in accordance with claim 1 , the data transmitter being configured to transmit the standard-based radio signal at a first transmission power in order to comprise a first logic value of the bit sequence;
the data transmitter being configured to transmit the standard-based radio signal at a second transmission power in order to comprise a second logic value of the bit sequence;
wherein the first transmission power differs from the second transmission power.

8. The system in accordance with claim 1 , wherein data transmitter being configured to transmit the standard-based radio signal in bursts;
wherein a time interval in which the standard-based radio signal is transmitted, comprises a first logic value of the bit sequence;
wherein a time interval in which the standard-based radio signal is not transmitted or in which transmitting the standard-based radio signal is paused, comprises a second logic value of the bit sequence.

9. The system in accordance with claim 1 , the data transmitter being configured to transmit the standard-based radio signal in the frequency band in order to comprise a first logic value of the bit sequence in the frequency band;
the data transmitter being configured to transmit the standard-based radio signal in a further frequency band in order to comprise a second logic value of the bit sequence in the frequency band;
wherein the frequency band differs from the further frequency band.

10. The system in accordance with claim 1 , the data transmitter comprising:
a radio chip configured to provide or transmit the standard-based radio signal; and
a controller configured to drive the radio chip or a device downstream of the radio chip to modify the standard-based radio signal;
wherein the controller is implemented by mean of a microprocessor, field programmable gate array, a programmable computer or an electronic circuit.

11. The system in accordance with claim 1 , the data transmitter being configured to transmit, in a first operating mode, the standard-based radio signal; and
the data transmitter being configured to modify, in a second operating mode, the standard-based radio signal in order to transmit the modified radio signal.

12. The system in accordance with claim 11 , the data transmitter being configured to further generate the standard-based radio signal in the second operating mode and modify same such that the modified radio signal, apart from information comprised in the standard-based radio signal, comprises additional information comprised using the bit sequence.

13. The system in accordance with claim 1 , wherein the standard-based radio signal is a WLAN, DECT, Bluetooth or ZigBee signal.

14. The system in accordance with claim 1 , the data transmitter being configured to transmit a telegram to a data receiver, the bit sequence forming the telegram.

15. The system in accordance with claim 14 , wherein the telegram comprises a preamble or synchronization sequence.

16. The system in accordance with claim 14 , wherein the telegram comprises a transmitter identification of the data transmitter.

17. The system in accordance with claim 14 , wherein the telegram comprises a receiver identification of the data receiver.

18. The system in accordance with claim 1 , wherein the data receiver is configured to enable the RF transceiver if the bit sequence fulfills a predetermined criterion.

19. The system in accordance with claim 1 , comprising a data transmitter, wherein a telegram comprises a preamble or synchronization sequence, wherein the data receiver is configured to recognize the modified radio signal using the preamble or synchronization sequence.

20. The system in accordance with claim 1 , comprising a data transmitter, wherein a telegram comprises a transmitter identification of the data transmitter, wherein the data receiver is configured to enable the RF transceiver if the transmitter identification matches an expected transmitter identification.

21. The system in accordance with claim 1 , comprising a data transmitter, wherein a telegram comprises a receiver identification of the data receiver, wherein the data receiver is configured to enable the RF transceiver if the receiver identification matches an expected receiver identification.

22. A data receiver, the data receiver comprising an RF transceiver and an additional RF receiver;
wherein the RF transceiver is configured to transmit and receive standard-based radio signals at least in a frequency band in order to form a radio connection to a data transmitter, wherein the data receiver is configured to disable the RF transceiver when there is no active radio connection between the data receiver and the data transmitter; and
wherein the RF receiver is configured to monitor a frequency band in order to recognize a modified radio signal from a transmitter using a bit sequence, wherein the modified radio signal is a standard-based radio signal that is modified such that an amplitude of the modified radio signal, in the frequency band, additionally comprises the bit sequence,
wherein the data receiver is configured to enable the RF transceiver responsive to having recognized the modified radio signal of the data transmitter.

Assignees

• Fraunhofer Ges Forschung
• Fraunhofer Gesehschaft Zur Foerderung Der Angewandten Forschung E V

Inventors

• Milosiu Heinrich
• Oehler Frank
• Dräger Tobias

Classifications

• H04L27/06

  Demodulator circuits; Receiver circuits · CPC title

• H04B1/04

  Circuits · CPC title

• Y02D30/70

  in wireless communication networks · CPC title

• H04W52/0229

  where the received signal is a wanted signal · CPC title

• H04B1/16

  Circuits · CPC title