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CN-122026931-A - Radio frequency circuit, electronic equipment and ranging method

CN122026931ACN 122026931 ACN122026931 ACN 122026931ACN-122026931-A

Abstract

The application discloses a radio frequency circuit, electronic equipment and a ranging method, wherein the radio frequency circuit comprises a first clock source, a first frequency dividing module, a first compensating module and a transmitting module, the first clock source, the first frequency dividing module, the first compensating module and the transmitting module are sequentially connected, the first clock source generates a clock signal, the first frequency dividing module divides the clock signal and outputs signals of a first frequency band and signals of a second frequency band obtained by frequency division to the first compensating module, the first compensating module sends a time delay compensating value and a phase compensating value to the transmitting module, compensates the signals output by the frequency dividing module according to the time delay compensating value and the phase compensating value, outputs signals of the first frequency band and signals of the second frequency band which are synchronous in time delay and phase, and the transmitting module transmits the first signal which carries the time delay compensating value and the phase compensating value and comprises signals of the first frequency band and signals of the second frequency band which are synchronous in time delay and phase.

Inventors

  • ZHAO DENG

Assignees

  • 维沃移动通信有限公司

Dates

Publication Date
20260512
Application Date
20260318

Claims (17)

  1. 1.A radio frequency circuit is characterized by comprising a first clock source, a first frequency dividing module, a first compensating module and a transmitting module, wherein the first clock source, the first frequency dividing module, the first compensating module and the transmitting module are sequentially connected, The first clock source is used for generating a clock signal; The first frequency division module is used for dividing the clock signal and outputting a first frequency band signal and a second frequency band signal obtained by frequency division to the first compensation module; the first compensation module is used for sending a time delay compensation value and a phase compensation value to the transmitting module, compensating the signal output by the first frequency division module according to the time delay compensation value and the phase compensation value, and outputting a signal of a first frequency band and a signal of a second frequency band which are synchronous in time delay and phase. The transmitting module is used for transmitting a first signal, wherein the first signal carries the time delay compensation value and the phase compensation value, and the first signal comprises a signal of the first frequency band and a signal of the second frequency band which are time delay synchronous and phase synchronous.
  2. 2. The radio frequency circuit according to claim 1, wherein the first compensation module comprises a first compensation control unit and a first compensation unit; the first compensation unit is connected between the first frequency division module and the transmitting module, and is connected with the first compensation control unit which is connected with the transmitting module, The first compensation control unit is used for sending a time delay compensation value and a phase compensation value to the first compensation unit and the transmitting module; the first compensation unit is used for compensating the signal output by the first frequency division module according to the time delay compensation value and the phase compensation value, and outputting a signal of a first frequency band and a signal of a second frequency band which are synchronous in time delay and phase.
  3. 3. The radio frequency circuit of claim 2, wherein the first compensation unit comprises a first delay compensation subunit, a second delay compensation subunit, and a first phase compensation subunit; the first delay compensation subunit, the second delay compensation subunit and the first phase compensation subunit are all connected with the first compensation control unit, the first delay compensation subunit and the second delay compensation subunit are respectively connected between the first frequency division module and the first phase compensation subunit, the first phase compensation subunit is connected with the transmitting module, The first compensation control unit is used for sending a first delay compensation value to the first delay compensation subunit, sending a second delay compensation value to the second delay compensation subunit, and sending a phase compensation value to the first phase compensation subunit; The first delay compensation subunit is used for carrying out delay compensation on the signal of the first frequency band output by the first frequency division module according to the first delay compensation value, and outputting the signal of the first frequency band after the delay compensation; The second delay compensation subunit is configured to perform delay compensation on the signal in the second frequency band output by the first frequency division module according to the second delay compensation value, and output the signal in the second frequency band after delay compensation; The first phase compensation subunit is configured to perform phase compensation on the signal of the first frequency band after delay compensation and the signal of the second frequency band after delay compensation according to the phase compensation value, and output a signal of the first frequency band and a signal of the second frequency band that are time-delay synchronous and phase synchronous.
  4. 4. The radio frequency circuit according to claim 1, wherein the transmitting module comprises a first processing unit and a transmitting unit; The transmitting unit is respectively connected with the first compensation module and the first processing unit, wherein, The first processing unit is configured to send the delay compensation value and the phase compensation value to the transmitting unit; the transmitting unit is used for transmitting the first signal.
  5. 5. The radio frequency circuit of claim 1, further comprising a second clock source, a second frequency division module, a second compensation module, and a receiving module, wherein the second clock source, the second frequency division module, the second compensation module, and the receiving module are sequentially connected, The receiving module is used for receiving a second signal and sending a delay compensation value and a phase compensation value to the second compensation module, wherein the second signal carries the delay compensation value and the phase compensation value, and the second signal comprises a signal of a first frequency band and a signal of a second frequency band which are synchronous in delay and phase; The second clock source is used for extracting clock signals in the second signals; the second frequency division module is used for dividing the clock signal and outputting a first frequency band signal and a second frequency band signal obtained by frequency division to the first compensation module; The second compensation module is used for compensating the signal output by the first frequency division module according to the delay compensation value and the phase compensation value to obtain the signal of the first frequency band and the signal of the second frequency band with synchronous delay and synchronous phase.
  6. 6. The radio frequency circuit according to claim 5, wherein the second compensation module comprises a second compensation control unit and a second compensation unit; The second compensation unit is connected between the second frequency division module and the receiving module, and is connected with the second compensation control unit which is connected with the receiving module, The second compensation control unit is used for sending the time delay compensation value and the phase compensation value to the second compensation unit; The second compensation unit is used for compensating the signal output by the second frequency division module according to the time delay compensation value and the phase compensation value to obtain the signal of the first frequency band and the signal of the second frequency band which are time delay synchronous and phase synchronous.
  7. 7. The radio frequency circuit of claim 6, wherein the second compensation unit comprises a third delay compensation subunit, a fourth delay compensation subunit, and a second phase compensation subunit; the third delay compensation subunit, the fourth delay compensation subunit and the second phase compensation subunit are all connected with the second compensation control unit, the third delay compensation subunit and the fourth delay compensation subunit are respectively connected between the second frequency division module and the second phase compensation subunit, the second phase compensation subunit is connected with the receiving module, The second compensation control unit is configured to send a first delay compensation value to the third delay compensation subunit, send a second delay compensation value to the fourth delay compensation subunit, and send a phase compensation value to the second phase compensation subunit; The third delay compensation subunit is configured to perform delay compensation on the signal in the first frequency band obtained by frequency division of the second frequency division module according to the first delay compensation value, so as to obtain a signal in the first frequency band after delay compensation; The fourth delay compensation subunit is configured to perform delay compensation on the signal in the second frequency band obtained by frequency division of the second frequency division module according to the second delay compensation value, so as to obtain a signal in the second frequency band after delay compensation; the second phase compensation subunit is configured to perform phase compensation on the signal of the first frequency band after delay compensation and the signal of the second frequency band after delay compensation according to the phase compensation value, so as to obtain a signal of the first frequency band and a signal of the second frequency band that are time-delay synchronous and phase synchronous.
  8. 8. The radio frequency circuit according to claim 5, wherein the receiving module comprises a second processing unit and a receiving unit; the receiving unit is respectively connected with the second compensation module and the second processing unit, The receiving unit is used for receiving the second signal; The second processing unit is configured to extract the delay compensation value and the phase compensation value carried by the second signal, and send the delay compensation value and the phase compensation value to the second compensation module.
  9. 9. The radio frequency circuit of claim 1, wherein the first frequency band is a 2.4GHz band of a wireless network WiFi and the second frequency band is a 5GHz band of WiFi or a 6GHz band of WiFi.
  10. 10. An electronic device comprising the radio frequency circuit of any one of claims 1 to 9.
  11. 11. A ranging method applied to the electronic device of claim 10, the electronic device being a first electronic device, the method comprising: receiving a second signal sent by second electronic equipment, wherein the second signal comprises a first frequency band signal and a second frequency band signal which are synchronous in time delay and phase; and carrying out joint ranging according to the signals of the first frequency band and the signals of the second frequency band to obtain a target distance between the first electronic equipment and the second electronic equipment.
  12. 12. The ranging method as defined in claim 11, further comprising, prior to receiving the second signal transmitted by the second electronic device: Receiving a signal of a first frequency band sent by second electronic equipment; performing independent ranging according to the signals of the first frequency band to obtain a first distance between the first electronic equipment and the second electronic equipment; And sending a control instruction under the condition that the first distance is smaller than a preset threshold value, wherein the control instruction is used for indicating the second electronic equipment to send the second signal.
  13. 13. The ranging method according to claim 11, wherein after the joint ranging is performed according to the signal in the first frequency band and the signal in the second frequency band to obtain the target distance between the first electronic device and the second electronic device, the method further comprises: And executing the functional operation corresponding to the distance range according to the distance range where the target distance is located.
  14. 14. A ranging method applied to the electronic device of claim 10, the electronic device being a second electronic device, the method comprising: The method comprises the steps of sending a second signal to first electronic equipment, wherein the second signal comprises a first frequency band signal and a second frequency band signal which are synchronous in time delay and phase, and the second signal is used for determining a target distance between the first electronic equipment and the second electronic equipment by the first electronic equipment.
  15. 15. The ranging method as defined in claim 14, further comprising, prior to transmitting the second signal to the first electronic device: The method comprises the steps of sending a signal of a first frequency band to first electronic equipment, wherein the signal of the first frequency band is used for determining a first distance between the first electronic equipment and second electronic equipment by the first electronic equipment; and receiving a control instruction sent by the first electronic equipment, wherein the control instruction is sent by the first electronic equipment under the condition that the first distance is smaller than a preset threshold value, and the control instruction is used for indicating the second electronic equipment to send the second signal.
  16. 16. An electronic device comprising a processor and a memory storing a program or instructions executable on the processor, the program or instructions implementing the steps of the ranging method according to any of claims 11 to 13 when executed by the processor, or the program or instructions implementing the steps of the ranging method according to any of claims 14 to 15 when executed by the processor.
  17. 17. A readable storage medium, characterized in that a program or instructions is stored on the readable storage medium, which program or instructions, when executed by a processor, implement the steps of the ranging method according to any of claims 11 to 13, or which program or instructions, when executed by a processor, implement the steps of the ranging method according to any of claims 14 to 15.

Description

Radio frequency circuit, electronic equipment and ranging method Technical Field The application belongs to the technical field of communication, and particularly relates to a radio frequency circuit, electronic equipment and a ranging method. Background With the rapid development of the fields of the Internet of things, automatic driving, intelligent buildings and the like, the demands for low-cost, wide-coverage and high-precision wireless ranging technology are increasingly urgent. The Channel Sounding (CS) technology is used as a mainstream ranging scheme based on the existing wireless network (WiFi) protocol or bluetooth protocol, and has the advantages of no need of additional hardware, strong compatibility and low deployment cost, and the core principle is that by extracting state Information (CSI) of a wireless Channel, signal propagation delay is inverted, and then the distance between the transceiver ends is calculated by a relationship of distance=speed of light, time delay/2. Considering the signal bandwidth is a core factor for determining the delay estimation accuracy, wherein the delay resolution is about 1/B, B is the bandwidth, that is, the wider the bandwidth is, the higher the delay resolution (that is, the delay estimation accuracy is). The current ranging technology generally adopts a single frequency band, such as WiFi 2.4GHz, wiFi 5GHz and the like, wherein the WiFi 2.4GHz is characterized by wide coverage and low precision, and the WiFi 5GHz is even characterized by 6GHz in the future by high precision and narrow coverage, that is to say, the current WiFi frequency band can not meet the requirements of wide coverage and high precision in the wireless ranging technology. Disclosure of Invention The embodiment of the application aims to provide a radio frequency circuit, electronic equipment and a ranging method, which can solve the problem that the current WiFi frequency band cannot meet the requirements of wide coverage and high precision in the wireless ranging technology. In a first aspect, an embodiment of the present application provides a radio frequency circuit, including a first clock source, a first frequency dividing module, a first compensating module, and a transmitting module, where the first clock source, the first frequency dividing module, the first compensating module, and the transmitting module are sequentially connected, The first clock source is used for generating a clock signal; The first frequency division module is used for dividing the clock signal and outputting a first frequency band signal and a second frequency band signal obtained by frequency division to the first compensation module; the first compensation module is used for sending a time delay compensation value and a phase compensation value to the transmitting module, compensating the signal output by the first frequency division module according to the time delay compensation value and the phase compensation value, and outputting a signal of a first frequency band and a signal of a second frequency band which are synchronous in time delay and phase. The transmitting module is used for transmitting a first signal, wherein the first signal carries the time delay compensation value and the phase compensation value, and the first signal comprises a signal of the first frequency band and a signal of the second frequency band which are time delay synchronous and phase synchronous. In a second aspect, an embodiment of the present application provides an electronic device, including a radio frequency circuit as described above. In a third aspect, an embodiment of the present application provides a ranging method, which is applied to the electronic device in the second aspect, where the electronic device is a first electronic device, and the method includes: receiving a second signal sent by second electronic equipment, wherein the second signal comprises a first frequency band signal and a second frequency band signal which are synchronous in time delay and phase; and carrying out joint ranging according to the signals of the first frequency band and the signals of the second frequency band to obtain a target distance between the first electronic equipment and the second electronic equipment. In a fourth aspect, an embodiment of the present application provides a ranging method, which is applied to the electronic device described in the second aspect, where the electronic device is a second electronic device, and the method includes: the method comprises the steps of sending a second signal to first electronic equipment, wherein the second signal comprises a first frequency band signal and a second frequency band signal which are synchronous in time delay and phase, and the two signals are used for determining a target distance between the first electronic equipment and the second electronic equipment by the first electronic equipment. In a fifth aspect, an embodiment of the present application provides a