# US 9,439,197 B1 · Method and apparatus for directed adaptive control of dynamic channel selection in wireless networks > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,439,197 B1 - Document ID: US9439197B1 - Status: Granted - Kind: B1 - Application number: 15/085,573 - Filed: 2016-03-30 - Granted: 2016-09-06 - Earliest claimed: 2015-08-10 - Assignees: Planetary Network Technologies, Inc. - Applicants: Planetary Network Technologies, Inc. - Inventors: Terry F K Ngo; Seung Baek Yi; Erick Kurniawan; Kun Ting Tsai - Web page: https://patentgrep.com/patent/US9439197B1 ## CPC - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04L 5/0062: {Avoidance of ingress interference, e.g. ham radio channels} - H04W 16/14: Spectrum sharing arrangements {between different networks} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## 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. In one embodiment, the present invention provides a standalone multi-channel DFS master device and a cloud intelligence device. The standalone multi-channel DFS master device generates spectral information associated with a plurality of communication channels for a device in communication with the standalone multi-channel DFS master device. The cloud intelligence device receives the spectral information via a network device, integrates the spectral information with other spectral information to generate integrated spectral information, and determines a communication channel for the device that is selected from the plurality of communication channels based at least on the integrated spectral information. ## Claims ### Claim 1 A system, comprising: a standalone multi-channel dynamic frequency selection (DFS) master device configured to generate spectral information associated with a plurality of 5 GHz communication channels for a device in communication with the standalone multi-channel DFS master device; and a cloud intelligence device configured to receive the spectral information via a network device, integrate the spectral information with other spectral information to generate integrated spectral information, and determine a communication channel for the device that is selected from the plurality of 5 GHz communication channels based at least on the integrated spectral information, wherein the standalone multi-channel DFS master device is configured to transmit a whitelist of each of the plurality of 5 GHz communication channels that does not contain a radar signal to the cloud intelligence device via the network device. ### Claim 2 (depends on 1) The system of claim 1, wherein the cloud intelligence device is further configured to determine the communication channel based on regulation information stored in at least one database. ### Claim 3 (depends on 1) The system of claim 1, wherein the cloud intelligence device is further configured to determine the communication channel based on non-spectral information that includes regulatory information, geographical information, or oceanic and atmospheric information. ### Claim 4 (depends on 1) The system of claim 1, wherein the standalone multi-channel DFS master device is configured to switch a 5 GHz transceiver of the standalone multi-channel DFS master device to a channel of the plurality of 5 GHz communication channels, cause a beacon generator of the standalone multi-channel DFS master device to generate a beacon in the channel of the plurality of 5 GHz communication channels, and cause a radar detector of the standalone multi-channel DFS master device to scan for the radar signal in the channel of the plurality of 5 GHz communication channels. ### Claim 5 (depends on 4) The system of claim 4, wherein the standalone multi-channel DFS master device is configured to transmit, to the cloud intelligence device, the spectral information comprising scan information associated with the scan for the radar signal in the channel of the plurality of 5 GHz communication channels. ### Claim 6 (depends on 1) The system of claim 1, wherein the standalone multi-channel DFS master device is configured to transmit a blacklist of each of the plurality of 5 GHz communication channels that contains the radar signal to the cloud intelligence device via the network device. ### Claim 7 (depends on 1) The system of claim 1, wherein the standalone multi-channel DFS master device is configured to transmit the spectral information to the cloud intelligence device via a wide area network or a set of DFS slave devices in communication with the standalone multi-channel DFS master device. ### Claim 8 (depends on 1) The system of claim 1, wherein the device is an access point device, a DFS slave device, a peer-to-peer group owner device, a mobile hotspot device or a radio access node device, and wherein the standalone multi-channel DFS master device is configured to be in communication with the device via a local area network, a wide area network, an ad hoc network, a peer-to-peer network or a short range wireless network. ### Claim 9 (depends on 1) The system of claim 1, wherein the cloud intelligence device is further configured to enable the standalone multi-channel DFS master device to communicate with another standalone multi-channel DFS master device via a same network or a different network. ### Claim 10 (depends on 1) The system of claim 1, wherein the spectral information is location-tagged and time-stamped. ### Claim 11 A method, comprising: generating, using a multi-channel dynamic frequency selection (DFS) device, spectral information associated with a plurality of 5 GHz radio channels for a device in communication with the multi-channel DFS device; transmitting, using the multi-channel DFS device, the spectral information to a cloud intelligence device via a wide area network, comprising transmitting a whitelist of each of the plurality of 5 GHz radio channels that does not contain a radar signal to the cloud intelligence device via the wide area network; generating, using the cloud intelligence device, integrated spectral information by integrating the spectral information with other spectral information; and determining, using the cloud intelligence device, a radio channel for the device from the plurality of 5 GHz radio channels based at least on the integrated spectral information. ### Claim 12 (depends on 11) The method of claim 11, wherein the generating the spectral information comprises: switching a 5 GHz radio transceiver of the multi-channel DFS device to a channel of the plurality of 5 GHz radio channels; generating a beacon in the channel of the plurality of 5 GHz radio channels; and scanning for the radar signal in the channel of the plurality of 5 GHz radio channels. ### Claim 13 (depends on 12) The method of claim 12, wherein the transmitting the spectral information comprises transmitting scan information associated with the scanning for the radar signal in the channel of the plurality of 5 GHz radio channels. ### Claim 14 (depends on 11) The method of claim 11, wherein the transmitting the spectral information comprises transmitting a blacklist of each of the plurality of 5 GHz radio channels that contains the radar signal to the cloud intelligence device via the wide area network. ### Claim 15 (depends on 11) The method of claim 11, further comprising: receiving, by the cloud intelligence device, regulation information stored in at least one database. ### Claim 16 (depends on 15) The method of claim 15, wherein the determining the radio channel comprises determining the radio channel based on the integrated spectral information and the regulation information. ### Claim 17 A system, comprising: a dynamic frequency selection (DFS) device configured to generate spectral information associated with a plurality of 5 GHz radio channels based on an analysis of the plurality of 5 GHz radio channels; and a cloud intelligence device configured to receive the spectral information via a wide area network, integrate the spectral information with other spectral information to generate integrated spectral information, and determine a radio channel for a device, from the plurality of 5 GHz radio channels, based at least on the integrated spectral information, wherein the device is in communication with the DFS device via a wireless network, wherein the other spectral information is generated by at least one other DFS device configured to analyze the plurality of 5 GHz radio channels, and wherein the DFS device is configured to transmit a whitelist of each of the plurality of 5 GHz radio channels that does not contain a radar signal to the cloud intelligence device via the wide area network. ### Claim 18 (depends on 17) The system of claim 17, wherein the cloud intelligence device is further configured to determine the radio channel based on regulation information associated with the plurality of 5 GHz radio channels and stored in at least one database. ### Claim 19 (depends on 17) The system of claim 17, wherein the DFS device is configured to switch a 5 GHz transceiver of the DFS device to a channel of the plurality of 5 GHz radio channels, generate a beacon in the channel of the plurality of 5 GHz radio channels, and scan for the radar signal in the channel of the plurality of 5 GHz radio channels. ### Claim 20 (depends on 19) The system of claim 19, wherein the DFS device is configured to transmit, to the cloud intelligence device, the spectral information comprising scan information associated with the scan for the radar signal in the channel of the plurality of 5 GHz radio channels. ### Claim 21 (depends on 17) The system of claim 17, wherein the DFS device is configured to transmit a blacklist of each of the plurality of 5 GHz radio channels that contains the radar signal to the cloud intelligence device via the wide area network. ### Claim 22 (depends on 17) The system of claim 17, wherein the spectral information is location-tagged and time-stamped.