Apparatus, system and method of radar detection

• US 10,299,290 B2
• Filed: 09/30/2016
• Issued: 05/21/2019
• Est. Priority Date: 09/30/2016
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel IP Corporation (Intel Corporation)
• Inventors: Amel, Roy, Ginsburg, Noam, Benjamin, Ofer, Gross, Shahar
• Primary Examiner(s): Vo, Nguyen T
• Assistant Examiner(s): Hu, Rui M
• Application Number:
  US15/281,111
• Publication Number:
  US 20180098351A1
• Time in Patent Office: 963 Days
• Field of Search: 455 631- 65, 455574, 4553432, 455 6711, 4552262
• CPC Class Codes: G01S 7/021 Auxiliary means for detecting or identifying radar signals or the like, e.g. radar jamming signals
• CPC Class Codes: H04B 1/0053 with common antenna for more than one band
• CPC Class Codes: H04K 2203/16 for telephony
• CPC Class Codes: H04K 2203/18 for wireless local area networks or WLAN
• CPC Class Codes: H04K 3/226 Selection of non-jammed channel for communication spectrum sharing arrangements H04W16/14; selection of wireless resources by user or terminal H04W72/02
• CPC Class Codes: H04K 3/822 by detecting the presence of a surveillance, interception or detection
• CPC Class Codes: H04W 74/008 with additional processing of random access related information at receiving side
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

Some demonstrative embodiments include apparatuses, devices, systems and methods of radar detection. For example, an apparatus may include a first detector component to detect energy over a wireless communication channel; a second detector component to detect a signal over the wireless communication channel, and to determine at least a classification of the signal as a radar-type or a non-radar type; a storage component to store radar detection information corresponding to signals detected by the second detector component, the radar detection information including at least the classification of the signal and one or more characteristics of the signal; and a controller to activate the second detector component upon detection of the energy by the first detector component, the controller configured to cause a radar-detection analysis of the radar detection information corresponding to a predefined time period.

Claims

1. An apparatus comprising:

a first detector to detect energy over a wireless communication channel;

a second detector to detect a signal over the wireless communication channel, and to determine at least a classification of the signal as a radar-type or a non-radar type;

a phase locked loop (PLL) shared by the first and second detectors;

a storage to store radar detection information corresponding to signals detected by the second detector over said wireless communication channel, the radar detection information comprising at least the classification of the signal determined by the second detector and one or more characteristics of the signal; and

a controller configured to change a frequency of the PLL for detection of the energy by the first detector, and, in response to detection of the energy by the first detector, to lock the frequency of the PLL for detection of the signal by the second detector, and to activate the second detector to detect the signal and to determine the classification of the signal, the controller configured to, prior to a transmission attempt over the wireless communication channel, cause a radar-detection analysis of the radar detection information corresponding to a predefined time period, and select whether or not to allow the transmission attempt over the wireless communication channel based on the radar-detection analysis, the radar-detection analysis based at least on the classification of the signal determined by the second detector.

2. The apparatus of claim 1, wherein the controller is to operate the first and second detectors during at least a low power mode of a wireless device, the controller to trigger the radar-detection analysis at an active power mode of the wireless device.

3. The apparatus of claim 1, wherein the one or more characteristics of the signal comprise at least one of a duration of the signal, or a power of the signal.

4. The apparatus of claim 1, wherein the second detector is to activate a signal classifier to determine the classification of the signal, based at least on a detected duration of the signal.

5. The apparatus of claim 1, wherein the first detector comprises at least an In-phase only (I-only) mixer, an analog baseband filter, an envelope detector, an Analog to Digital Converter (ADC), and one or more digital power detectors.

6. The apparatus of claim 1, wherein the second detector comprises at least an In-phase only (I-only) mixer, an analog baseband filter, an Analog to Digital Converter (ADC), a digital filter, a plurality of digital power detectors, and a chirp detector.

7. The apparatus of claim 1, wherein the predefined time period comprises a time period of one minute.

8. The apparatus of claim 1, wherein the wireless communication channel comprises a Dynamic Frequency Selection (DFS) channel.

9. The apparatus of claim 1, wherein the wireless communication channel comprises a channel in a 5 Gigahertz frequency band.

10. The apparatus of claim 1 comprising a transmitter to transmit over the wireless communication channel.

11. The apparatus of claim 1 comprising one or more antennas, and a processor.

12. A wireless communication device comprising:

one or more antennas;

a transmitter to transmit over a wireless communication frequency band;

a first detector to detect energy over a wireless communication channel in the wireless communication frequency band;

a second detector to detect a signal over the wireless communication channel, and to determine at least a classification of the signal as a radar-type or a non-radar type;

a phase locked loop (PLL) shared by the first and second detectors;

a storage to store radar detection information corresponding to signals detected by the second detector over said wireless communication channel, the radar detection information comprising at least the classification of the signal determined by the second detector and one or more characteristics of the signal; and

a controller configured to change a frequency of the PLL for detection of the energy by the first detector, and, in response to detection of the energy by the first detector, to lock the frequency of the PLL for detection of the signal by the second detector, and to activate the second detector to detect the signal and to determine the classification of the signal, the controller configured to cause a radar-detection analysis of the radar detection information corresponding to a predefined time period, the radar-detection analysis based at least on the classification of the signal determined by the second detector, wherein the controller is to operate the first and second detectors during at least a low power mode of the wireless communication device, and to trigger the radar-detection analysis at an active power mode of the wireless communication device.

13. The wireless communication device of claim 12, wherein the controller is to cause the radar-detection analysis prior to a transmission attempt over the wireless communication channel.

14. The wireless communication device of claim 13, wherein the controller is to select whether or not to allow the transmission attempt over the wireless communication channel based on the radar-detection analysis.

15. The wireless communication device of claim 12, wherein the second detector is to activate a signal classifier to determine the classification of the signal, based at least on a detected duration of the signal.

16. The wireless communication device of claim 12, wherein the one or more characteristics of the signal comprise at least one of a duration of the signal, or a power of the signal.

17. A method to be performed at a wireless communication device, the method comprising:

operating a first detector to detect energy over a wireless communication channel by changing a frequency of a phase locked loop (PLL) shared by the first detector and a second detector;

in response to detection of the energy by the first detector, locking the frequency of the PLL for signal detection by the second detector, and activating the second detector to detect a signal over the wireless communication channel, and to determine a classification of the signal as a radar-type or a non-radar type;

storing radar detection information corresponding to signals detected by the second detector over said wireless communication channel, the radar detection information comprising the classification of the signal determined by the second detector and one or more characteristics of the signal;

prior to a transmission attempt over the wireless communication channel, causing a radar-detection analysis of the radar detection information corresponding to a predefined time period based at least on the classification of the signal determined by the second detector; and

selecting whether or not to allow the transmission attempt over the wireless communication channel based on the radar-detection analysis.

18. The method of claim 17 comprising operating the first and second detector components during at least a low power mode of the wireless communication device, and triggering the radar-detection analysis at an active power mode of the wireless communication device.

19. A product comprising one or more tangible computer-readable non-transitory storage media comprising computer-executable instructions operable to, when executed by at least one processor, enable the at least one processor to cause a wireless communication device to:

operate a first detector to detect energy over a wireless communication channel by changing a frequency of a phase locked loop (PLL) shared by the first detector and a second detector;

in response to detection of the energy by the first detector, lock the frequency of the PLL for signal detection by the second detector, and activate the second detector to detect a signal over the wireless communication channel, and to determine a classification of the signal as a radar-type or a non-radar type;

store radar detection information corresponding to signals detected by the second detector over said wireless communication channel, the radar detection information comprising the classification of the signal determined by the second detector and one or more characteristics of the signal;

prior to a transmission attempt over the wireless communication channel, cause a radar-detection analysis of the radar detection information corresponding to a predefined time period based at least on the classification of the signal determined by the second detector; and

select whether or not to allow the transmission attempt over the wireless communication channel based on the radar-detection analysis.

20. The product of claim 19, wherein the one or more characteristics of the signal comprise at least one of a duration of the signal, or a power of the signal.

21. The product of claim 19, wherein the instructions, when executed, cause the wireless communication device to activate a signal classifier to determine the classification of the signal, based at least on a detected duration of the signal.

22. The product of claim 19, wherein the instructions, when executed, cause the wireless communication device to operate the first and second detectors during at least a low power mode of the wireless communication device, and trigger the radar-detection analysis at an active power mode of the wireless communication device.