- Patent Title: GPS-assisted collaborative and signaling-aided WLAN DFS operation
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Application No.: US16299850Application Date: 2019-03-12
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Publication No.: US12028796B2Publication Date: 2024-07-02
- Inventor: Dhruvaraja Kunjar , Vinoth Sampath
- Applicant: Cypress Semiconductor Corporation
- Applicant Address: US CA San Jose
- Assignee: Cypress Semiconductor Corporation
- Current Assignee: Cypress Semiconductor Corporation
- Current Assignee Address: US CA San Jose
- Main IPC: H04W48/16
- IPC: H04W48/16 ; G01S7/02 ; H04W4/021 ; H04W72/30 ; H04W4/48 ; H04W84/12

Abstract:
Disclosed are methods and systems for a WLAN device to select an operating dynamic frequency selection (DFS) channel that minimizes the probability of radar interference by using aiding information. The aiding information may be a crowd-sourced database of geo-tagged radar zones including one or more DFS channels used within the geo-tagged radar zones that are detected by a plurality of WLAN devices. The WLAN device may query the crowd-sourced database for a geo-tagged radar zone that is nearby to determine if a radar operates on an overlapping DFS channel so it may switch to a different channel. In one aspect, the aiding information may be periodic special action frames broadcast by a WLAN beaconing device over the operating channel of the WLAN device. The special action frames may carry information on one or more channels used by a near-by radar and recommended alternative channels to use by the WLAN device.
Public/Granted literature
- US20200296659A1 GPS-ASSISTED COLLABORATIVE AND SIGNALING-AIDED WLAN DFS OPERATION Public/Granted day:2020-09-17
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