Cloud dfs super master systems and methods

Abstract

The present invention relates to wireless networks and more specifically to systems and methods for selecting available channels free of radar signals from a plurality of radio frequency channels. One embodiment includes a cloud DFS super master, a plurality of radar detectors, and one or more client devices. The cloud DFS super master is programmed to receive the results of a scan for a radar signal from each of the plurality of radar detectors, geo-location information for the plurality of radar detectors, geo-location information for the client devices and a request for available radio channels from the client devices. The cloud DFS super master is programmed to determine one or more radio channels that are free of radar signals within a distance of the client device.

1 . A system for detecting a radar signal and avoiding interference with the radar signal comprising:
 a cloud Dynamic Frequency Selection (“DFS”) super master;   a plurality of radar detectors communicatively coupled to the cloud DFS super master and programmed to scan for the radar signal in each of a plurality of 5 GHz radio channels, to transmit results of the scan for the radar signal to the cloud DFS super master, and to transmit geo-location information for each of the plurality of radar detectors to the cloud DFS super master; and   a client device communicatively coupled to the cloud DFS super master and programmed to transmit geo-location information for the client device and a request for available 5 GHz radio channels to the cloud DFS super master;   wherein the cloud DFS super master is programmed to receive the results of the scan for the radar signal from each of the plurality of radar detectors, the geo-location information for the plurality of radar detectors, the geo-location information for the client device and the request for available 5 GHz radio channels and is programmed to determine one or more 5 GHz radio channels that are free of the radar signal within a range of the client device from the results of the scan for the radar signal from each of the plurality of radar detectors, the geo-location information for the plurality of radar detectors, and the geo-location information for the client device and to transmit the one or more 5 GHz radio channels that are free of the radar signal within the range of the client device to the client device.   
     
     
         2 . The system of  claim 1  wherein the cloud DFS super master is programmed to:
 receive an indication from a first radar detector of the plurality of radar detectors that the first radar detector has detected the radar signal on a first channel; and 
 cause a second radar detector of the plurality of radar detectors and to switch to the first channel and scan for the radar in the first channel. 
 
     
     
         3 . The system of  claim 2  wherein the cloud DFS super master is programmed to cause the second radar detector to increase a dwell time in the first channel. 
     
     
         4 . The system of  claim 2  wherein the first radar detector and the second radar detector have different positions and different look angles relative to a source of the radar signal. 
     
     
         5 . The system of  claim 1  wherein the range is a function of a signal strength of the radar signal. 
     
     
         6 . The system of  claim 1  wherein each of the plurality of radar detectors are distributed geographically from each other. 
     
     
         7 . The system of  claim 1  wherein each of the plurality of radar detectors are programmed to transmit wireless spectrum information to the cloud DFS super master and the cloud DFS super master is programmed to coordinate transmissions of the client device. 
     
     
         8 . The system of  claim 1  wherein at least one of the plurality of radar detectors comprises an access point, LTE small cell or base station, or peer to peer device. 
     
     
         9 . The system of  claim 1  wherein the client device comprises an access point, LTE small cell or base station, or peer to peer device. 
     
     
         10 . The system of  claim 1  wherein the cloud DFS super master is programmed to determine one or more 5 GHz radio channels that are not free of the radar signal within the range of the client device from the results of the scan for the radar signal from each of the plurality of radar detectors, the geo-location information for the plurality of radar detectors, and the geo-location information for the client device and to transmit the one or more 5 GHz radio channels that are not free of the radar signal within the range of the client device to the client device. 
     
     
         11 . A method for detecting radar signal and avoiding interference with the radar signal comprising:
 providing a cloud Dynamic Frequency Selection (“DFS”) super master;   providing a plurality of radar detectors communicatively coupled to the cloud DFS super master and scanning for the radar signal in each of a plurality of 5 GHz radio channels, transmitting results of the scan for the radar signal to the cloud DFS super master, and transmitting geo-location information for each of the plurality of radar detectors to the cloud DFS super master with the plurality of radar detectors;   providing a client device communicatively coupled to the cloud DFS super master and transmitting geo-location information for the client device and a request for available 5 GHz radio channels to the cloud DFS super master with the client device; and   with the cloud DFS super master, receiving the results of the scan for the radar signal from each of the plurality of radar detectors, receiving the geo-location information for the plurality of radar detectors, receiving the geo-location information for the client device and the request for available 5 GHz radio channels and determining one or more 5 GHz radio channels that are free of the radar signal within a range of the client device from the results of the scan for the radar signal from each of the plurality of radar detectors, the geo-location information for the plurality of radar detectors, and the geo-location information for the client device and transmitting the one or more 5 GHz radio channels that are free of the radar signal within the range of the client device to the client device.   
     
     
         12 . The method of  claim 11  comprising the cloud DFS super master:
 receiving an indication from a first radar detector of the plurality of radar detectors that the first radar detector has detected the radar signal on a first channel; and 
 causing a second radar detector of the plurality of radar detectors and to switch to the first channel and scan for the radar in the first channel. 
 
     
     
         13 . The method of  claim 12  comprising the cloud DFS super master causing the second radar detector to increase a dwell time in the first channel. 
     
     
         14 . The method of  claim 12  wherein the first radar detector and the second radar detector have different positions and different look angles relative to a source of the radar signal. 
     
     
         15 . The method of  claim 11  wherein the plurality of radar detectors are distributed geographically from each other. 
     
     
         16 . The method of  claim 11  comprising the plurality of radar detectors transmitting wireless spectrum information to the cloud DFS super master and the cloud DFS super master coordinating transmissions of the client device. 
     
     
         17 . The method of  claim 11  wherein at least one of the plurality of radar detectors comprises an access point, LTE small cell or base station, or peer to peer device. 
     
     
         18 . The method of  claim 11  wherein the client device comprises an access point, LTE small cell or base station, or peer to peer device. 
     
     
         19 . A system for detecting a radar signal and avoiding interference with the radar signal comprising:
 a cloud Dynamic Frequency Selection (“DFS”) super master; and   a plurality of radar detectors communicatively coupled to the cloud DFS super master and programmed to scan for the radar signal in each of a plurality of  5  GHz radio channels, to transmit results of the scan for the radar signal to the cloud DFS super master, and to transmit geo-location information for each of the plurality of radar detectors to the cloud DFS super master;   wherein the cloud DFS super master is programmed to:
 receive the results of the scan for the radar signal from each of the plurality of radar detectors and the geo-location information for the plurality of radar detectors; 
 determine that a first radar detector of the plurality of radar detectors detected the radar signal in a first channel of the plurality of 5 GHz radio channels; and 
 determine a second radar detector of the plurality of radar detectors to evaluate the first radar detector's detection of the radar signal in the first channel based on the geo-location information for the first radar detector and the geo-location for the second radar detector.