Apparatus, system and method of radar detection

Patent metadata

Field	Value
Publication number	US-10299290-B2
Application number	US-201615281111-A
Country	US
Kind code	B2
Filing date	Sep 30, 2016
Priority date	Sep 30, 2016
Publication date	May 21, 2019
Grant date	May 21, 2019

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.

First claim

What is claimed is:

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 chang

Assignees

• Intel Ip Corp

Inventors

• Amel Roy
• Ginsburg Noam
• Benjamin Ofer
• Gross Shahar

Classifications

• H04K3/226

  Selection of non-jammed channel for communication (spectrum sharing arrangements H04W16/14; selection of wireless resources by user or terminal H04W72/02) · CPC title

• G01S7/021

  Auxiliary means for detecting or identifying radar signals or the like, e.g. radar jamming signals · CPC title

• H04B1/0053

  with common antenna for more than one band · CPC title

• H04W88/06

  adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals · CPC title

• H04K2203/16

  for telephony · CPC title