DIRECTION FINDING POSITIONING IN WIRELESS LOCAL AREA NETWORKS

Title:

DIRECTION FINDING POSITIONING IN WIRELESS LOCAL AREA NETWORKS

Document Type and Number:

WIPO Patent Application WO/2015/130618

Kind Code:

A3

Abstract:

A method of direction finding (DF) positioning in a wireless location area network (WLAN) is proposed. A multiple antenna IEEE 802.11 transmitting device can transmit signal preamble containing multiple Long Training Field (LTF) symbols in a radio frame from multiple antennas simultaneously, which allows a receiving device to resolve multiple DF sounding signals transmitted from the multiple antennas. As a result, angle of departure (AoD) of the transmitting device can be estimated by using the multiple resolved DF sounding signals from each antenna for DF positioning purpose.

Inventors:

WANG JAMES JUNE-MING (US)
LIU JIANHAN (US)
PARE JR THOMAS EDWARD (US)
WU TIANYU (US)
BAJKO GABOR (US)
HSU YUNG-PING (CN)

Application Number:

PCT/US2015/017174

Publication Date:

November 19, 2015

Filing Date:

February 24, 2015

Export Citation:

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Assignee:

MEDIATEK INC (CN)
WANG JAMES JUNE-MING (US)
LIU JIANHAN (US)
PARE JR THOMAS EDWARD (US)
WU TIANYU (US)
BAJKO GABOR (US)
HSU YUNG-PING (CN)

International Classes:

H04B7/00; H04W4/021; H04W4/33

Foreign References:

US20130188538A1	2013-07-25
US20130223427A1	2013-08-29
US20080258562A1	2008-10-23
US20030140771A1	2003-07-31
US20110075607A1	2011-03-31
US20100106440A1	2010-04-29
US20080051145A1	2008-02-28
US20120327914A1	2012-12-27

Other References: