# US 12,111,383 B2 · Radar signaling for emergency scenarios > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,111,383 B2 - Document ID: US12111383B2 - Status: Granted - Kind: B2 - Application number: 17/560,428 - Filed: 2021-12-23 - Published: 2023-06-29 - Granted: 2024-10-08 - Earliest claimed: 2021-12-23 - Assignees: GM Cruise Holdings LLC - Applicants: GM Cruise Holdings LLC - Inventors: Daniel Flores Tapia - Web page: https://patentgrep.com/patent/US12111383B2 ## CPC - G01S 13/34: using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal - G01S 13/74: Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems - G01S 7/021: {Auxiliary means for detecting or identifying radar signals or the like, e.g. radar jamming signals} - G01S 13/931: of land vehicles - G01S 2013/9316: {combined with communication equipment with other vehicles or with base stations} - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES ## Abstract Architectures and techniques for radar signaling in emergency scenarios. A high-frequency radio signal in a first frequency range from a remote device with a local radio frequency (RF) receiver. The received radio signal in the first frequency range is converted to a corresponding signal in a second and lower frequency range. Signal phase information in the lower frequency signal is modified to generate a modified signal in the lower frequency range. The modified signal in the lower frequency range is converted to the first frequency range. The modified signal in the first frequency range is transmitted to the remote device with an RF transmitter. ## Claims ### Claim 1 A system comprising: a radio frequency (RF) receiver to receive a radio signal from a remote source; a signal augmentation agent coupled with the RF receiver to modify signal phase information in the received radio signal based on one or more emergency parameters to generate a modified signal in response to a detection of an emergency condition; and a radio frequency (RF) transmitter coupled with the signal augmentation agent to transmit the modified signal, wherein the modified signal is indicative of the emergency condition. ### Claim 2 (depends on 1) The system of claim 1, further comprising: a receiver heterodyne mixer coupled with the RF receiver and with the signal augmentation agent, the receiver heterodyne mixer to convert the received radio signal from the remote source from a high frequency radar range to a lower baseband range; wherein the signal augmentation agent functions to modify signal phase information in the lower baseband range; a transmitter up mixer coupled with the signal augmentation agent to convert the modified signal from the lower baseband range to the high frequency radar range; and an amplifier coupled with the transmitter up mixer and to receive one or more pre-selected amplification parameters, the amplifier to amplify the modified signal based on the received one or more pre-selected amplification parameters. ### Claim 3 (depends on 1) The system of claim 1, wherein the modification to the signal phase information indicates movement of a host vehicle. ### Claim 4 (depends on 1) The system of claim 1, wherein the signal augmentation agent functions to add a user-defined phase offset to the received radio signal. ### Claim 5 (depends on 1) The system of claim 1, wherein the remote source comprises a remote autonomous vehicle. ### Claim 6 (depends on 1) The system of claim 1, wherein the received radio signal comprises a radar signal. ### Claim 7 A non-transitory computer-readable medium having stored thereon instructions that, when executed by one or more processors, are configurable to cause the one or more processors to: receive, with a radio frequency (RF) receiver, a high-frequency radio signal in a first frequency range from a remote device; convert the received radio signal in the first frequency range to a corresponding signal in a second frequency range that is lower than the first frequency range; modify signal phase information in the corresponding signal to generate a modified signal in the second frequency range, wherein the modification is enabled in response to detection of an emergency condition; convert the modified signal in the second frequency range to the first frequency range to generate a high-frequency modified signal; and transmit, with a radio frequency (RF) transmitter, the high-frequency modified signal in the first frequency range to the remote device, wherein the high-frequency modified signal is indicative of the emergency condition. ### Claim 8 (depends on 7) The non-transitory computer-readable medium of claim 7, wherein the remote device comprises a remote autonomous vehicle. ### Claim 9 (depends on 8) The non-transitory computer-readable medium of claim 8, wherein the received high-frequency radio signal comprises a radar signal. ### Claim 10 (depends on 7) The non-transitory computer-readable medium of claim 7, wherein the modification to the signal phase information is based on one or more pre-selected phase parameters. ### Claim 11 (depends on 7) The non-transitory computer-readable medium of claim 7, further comprising instructions that, when executed by the one or more processors, cause the one or more processors to amplify the modified signal in the first frequency range. ### Claim 12 (depends on 11) The non-transitory computer-readable medium of claim 11, further comprising instructions that, when executed by the one or more processors, cause the one or more processors to amplify the modified signal based on the received one or more pre-selected amplification parameters. ### Claim 13 (depends on 7) The non-transitory computer-readable medium of claim 7, wherein the modification is enabled in response to user input received from a physical interface within an autonomous vehicle. ### Claim 14 A method comprising: receiving, with a radio frequency (RF) receiver, a high-frequency radio signal in a first frequency range from a remote device; converting the received radio signal in the first frequency range to a corresponding signal in a second frequency range that is lower than the first frequency range; modifying signal phase information in the corresponding signal to generate a modified signal in the second frequency range, wherein the modification is enabled in response to detection of an emergency condition; converting the modified signal in the second frequency range to the first frequency range to generate a high-frequency modified signal; and transmitting, with a radio frequency (RF) transmitter, the high-frequency modified signal in the first frequency range to the remote device, wherein the high-frequency modified signal is indicative of the emergency condition. ### Claim 15 (depends on 14) The method of claim 14, wherein the remote device comprises a remote autonomous vehicle. ### Claim 16 (depends on 14) The method of claim 14, wherein the received high-frequency radio signal comprises a radar signal. ### Claim 17 (depends on 14) The method of claim 14, wherein the modification to the signal phase information is based on one or more pre-selected phase parameters. ### Claim 18 (depends on 14) The method of claim 14, further comprising causing the one or more processors to amplify the modified signal in the first frequency range. ### Claim 19 (depends on 18) The method of claim 18, further comprising amplifying the modified signal in the first frequency range.