Tracking radar frequency enabling more channels

Patent metadata

Field	Value
Publication number	US-9306722-B2
Application number	US-201313933456-A
Country	US
Kind code	B2
Filing date	Jul 2, 2013
Priority date	Jul 2, 2013
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

In an example embodiment, a channel that includes a plurality of sub-channels is sampled to detect pulses indicative of a presence of a radar signal. A frequency for the radar signal is determined. If the frequency of the radar signal maps to a selected subset of the plurality of sub-channels, the selected subset of the plurality of sub-channels are determined to be unavailable due to radar, while the remaining sub-channels remain available for use. The selected subset of the plurality of sub-channels determined to be unavailable due to radar may be selectively returned for use after the radar signal is no longer detected for a predetermined selected time period.

First claim

The invention claimed is:

1. Logic encoded in a tangible, non-transitory computer readable medium for execution and when executed by a processor operable to:
select a wide band channel comprising a plurality of sub-channels;
obtain a plurality of samples on the wide band channel;
determine a plurality of angles between the plurality of samples;
determine a frequency of a primary user signal by filtering the plurality of angles;
map the determined primary user signal to a f…

Assignees

• Cisco Tech Inc

Inventors

• Rangarajan Raghuram
• Stager Paul
• Kloper David S

Classifications

• H04L27/0006

  Electricity · mapped topic

• H04L5/0037

  Electricity · mapped topic

• H04L5/0062 Primary

  Electricity · mapped topic

• H04L5/0064

  Electricity · mapped topic