DYNAMIC FREQUENCY SELECTION AND TEMPORARY CHANNEL SELECTION

Title:

DYNAMIC FREQUENCY SELECTION AND TEMPORARY CHANNEL SELECTION

Document Type and Number:

WIPO Patent Application WO2004070988

Kind Code:

A3

Abstract:

To avoid interference with radar systems in the 5GHz, wireless devices detect radar and vacate any channels currently used by the radar system. In a channel switching technique, if the new channel is radar-exempt, then normal operation commences on the new channel. If the new channel is non-radar-exempt, then normal operation commences on a temporary radar-exempt channel and an aggregate background scan can be performed on the new channel. If no radars are detected using the aggregate background scan, then operation is switched from the temporary channel to the new channel.

Inventors:

MCFARLAND WILLIAM J (US)
GREEN MICHAEL R (US)

Application Number:

PCT/US2004/001860

Publication Date:

October 07, 2004

Filing Date:

January 23, 2004

Export Citation:

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Assignee:

ATHEROS COMM INC (US)
MCFARLAND WILLIAM J (US)
GREEN MICHAEL R (US)

International Classes:

H04L1/22; H04L5/06; H04L12/28; H04L12/56; H04L29/06; H04W16/14; H04W24/04; H04W72/08; H04W16/10; H04W84/12; H04W99/00; (IPC1-7): H04J3/16

Foreign References:

US20030206130A1	2003-11-06
US5809335A	1998-09-15
US20040042396A1	2004-03-04
US20030107512A1	2003-06-12

Other References: