Prevention of electromagnetic wave detection in a wireless communication network

Patent metadata

Field	Value
Publication number	US-12483442-B2
Application number	US-202217970471-A
Country	US
Kind code	B2
Filing date	Oct 20, 2022
Priority date	Oct 20, 2022
Publication date	Nov 25, 2025
Grant date	Nov 25, 2025

Abstract

A coherent signal is transmitted to cancel a baseband signal at a baseband frequency generated by a component of a wireless communication device while information corresponding to the baseband signal may be transmitted from the wireless communication device at an upconverted frequency. Generating and transmitting of the coherent signal may be responsive to detecting signal energy of a remotely generated baseband energy that may be generated by a remote sniffing device attempting to eavesdrop, or snoop, and remotely and wirelessly steal information from detecting of the baseband signal's electromagnetic energy. The coherent signal may be transmitted directionally to increase cancellation of the baseband signal at a likely location, or in a likely direction, of the eavesdropping device.

First claim

What is claimed is:

1 . A method, comprising:
receiving, by a system comprising a first processor, an indication of a baseband signal corresponding to a component associated with a communication device enabled for communication via a communication network, wherein the component comprises at least one of a second processor of the communication device or a memory of the communication device; generating, based on the indication of the baseband signal, a coherent signal that corresponds to the baseband signal; and communicating the coherent signal to a first transceiver to facilitate a transmission of the coherent signal with the first transceiver.

2 . The method of claim 1 , wherein the component is the second processor of the communication device, and wherein the baseband signal emanates from the second processor.

3 . The method of claim 1 , wherein the component is the memory of the communication device, and wherein the baseband signal emanates from the memory.

4 . The method of claim 1 , wherein the communication device comprises the first transceiver, and wherein the baseband signal corresponds to a first frequency, the method further comprising:
upconverting an information signal corresponding to the baseband signal to an upconverted information signal corresponding to a second frequency different than the first frequency; and transmitting the upconverted information signal with the first transceiver according to the second frequency, wherein the transmission of the coherent signal with the first transceiver comprises the transmission of the coherent signal with the first transceiver at the first frequency.

5 . The method of claim 4 , wherein the baseband signal corresponds to a first phase, wherein the baseband signal has a first amplitude within a first proximity of the communication device and a second amplitude outside of the first proximity and within a second proximity of the communication device, wherein the first amplitude is different than the second amplitude, wherein the first proximity is closer than the second proximity, and wherein the transmission of the coherent signal with the first transceiver comprises the transmission of the coherent signal with the first transceiver at a third amplitude, different than the first amplitude and the second amplitude, and at a second phase, different than the first phase, that results in a reduction of the second amplitude within the second proximity to a reduced second amplitude within the second proximity that is less than the second amplitude within the second proximity.

6 . The method of claim 5 , wherein the first proximity is defined by a first volume of space inside a housing of the communication device, and wherein the second proximity is defined by a second volume of space outside the housing of the communication device.

7 . The method of claim 5 , wherein the transmission of the coherent signal comprises the transmission of the coherent signal with the first transceiver from within the first proximity.

8 . The method of claim 6 , wherein the transmission of the coherent signal comprises a directional transmission of the coherent signal in a specified direction to result in a directional attenuation of the baseband signal, and to result in the baseband signal having a fourth amplitude within a third volume of space of the second proximity that is different than the second amplitude within the second proximity and the reduced second amplitude within the second proximity.

9 . The method of claim 1 , wherein a transmitter device separate from the communication device comprises the first transceiver, and wherein the communication device comprises a second transceiver, the method further comprising:
upconverting an information signal corresponding to the baseband signal to an upconverted information signal having a second frequency; and transmitting the upconverted information signal with the second transceiver according to the second frequency, wherein the transmission of the coherent signal with the first transceiver comprises the transmission of the coherent signal with the first transceiver at the first frequency.

10 . The method of 9 , wherein the transmitter device is outside of a housing of the communication device.

11 . A system, comprising:
a transmitter; a receiver; and a processor, operatively coupled with the transmitter and the receiver, the processor configured to: based on electromagnetic signal energy detected by the receiver, generate a coherent signal that corresponds to a baseband signal that emanates from a component associated with an Internet of Things device; and cause the transmitter to transmit the coherent signal.

12 . The system of claim 11 , wherein the system is the Internet of Things device, and wherein the component is at least one of a processor or a memory of the Internet of Things device.

13 . The system of claim 11 , wherein the system is an attenuating device that is separate from the Internet of Things device, and wherein the component is at least one of a processor or a memory of the Internet of Things device.

14 . The system of claim 11 , wherein the baseband signal has a first phase, wherein the baseband signal has a first amplitude within a first range of a location of the Internet of Things device and a second amplitude within a second range of the location of the Internet of Things device, wherein the second range is outside of the first range, and wherein generation of the coherent signal comprises the generation of the coherent signal to be at a specified frequency, at a second phase, and at a third amplitude to attenuate the second amplitude within the second range.

15 . The system of claim 11 , wherein the processor is further configured to receive an indication of the baseband signal that comprises information corresponding to a frequency at which the baseband signal emanates from the Internet of Things device as a result of the component operating.

16 . A non-transitory machine-readable medium, comprising executable instructions that, when executed by a processor, facilitate performance of operations, comprising:
determining a baseband signal emanating from operation of an internal component of a user device, wherein the baseband signal has a first frequency and a first phase, and wherein the baseband signal has a first amplitude at a first distance from the user device and a second amplitude at a second distance from the user device; detecting remotely generated baseband energy corresponding to the baseband signal; responsive to the detecting of the remotely generated baseband energy, generating a coherent signal that corresponds to the baseband signal; and transmitting the coherent signal via a first transmitter at the first frequency, at a second phase, and at a third amplitude to reduce the second amplitude at the second distance to the third amplitude at the second distance.

17 . The non-transitory machine-readable medium of claim 16 , wherein the operations further comprise:
upconverting the baseband signal to result in an upconverted information signal having a second frequency; transmitting the upconverted information signal via the first transmitter according to the second frequency; and transmitting the coherent signal via the first transmitter at the first frequency, wherein the user device comprises the first transmitter, the processor, and the internal component of the user device.

18 . The non-transitory machine-readable medium of claim 16 , wherein the internal component, of the user

Assignees

• Dell Products Lp

Inventors

• Shachar Tomer
• Gehtman Yevgeni
• Balin Maxim

Classifications

• H04L25/02 Primary

  Details {; arrangements for supplying electrical power along data transmission lines (systems for transmitting signals via power distribution lines H04B3/54)} · CPC title