WO2005076903A3 - Method and apparatus for measuring channel quality using a smart antenna in a wireless transmit/receive unit - Google Patents

Method and apparatus for measuring channel quality using a smart antenna in a wireless transmit/receive unit Download PDF

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Publication number
WO2005076903A3
WO2005076903A3 PCT/US2005/003476 US2005003476W WO2005076903A3 WO 2005076903 A3 WO2005076903 A3 WO 2005076903A3 US 2005003476 W US2005003476 W US 2005003476W WO 2005076903 A3 WO2005076903 A3 WO 2005076903A3
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WO
WIPO (PCT)
Prior art keywords
channel quality
smart antenna
wireless transmit
active beam
samples
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PCT/US2005/003476
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French (fr)
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WO2005076903A2 (en
Inventor
Kambiz Casey Zangi
Janet Stern-Berkowitz
Original Assignee
Interdigital Tech Corp
Kambiz Casey Zangi
Janet Stern-Berkowitz
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Publication date
Application filed by Interdigital Tech Corp, Kambiz Casey Zangi, Janet Stern-Berkowitz filed Critical Interdigital Tech Corp
Publication of WO2005076903A2 publication Critical patent/WO2005076903A2/en
Publication of WO2005076903A3 publication Critical patent/WO2005076903A3/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters

Abstract

A method and apparatus for measuring a channel quality in wireless transmit/receive units (WTRUs) which are equipped with a subscriber based smart antenna. The WTRUs are equipped with a smart antenna so that the WTRU generates a plurality of directional beams and, optionally, an omni-directional beam. A dwell time is provided in a measurement period to switch a beam from an active beam to a non-active beam. The active beam is one of the plurality of directional beams or, optionally, the omni-directional beam, for communication with one or more serving base station(s). A beam is switched to a non-active beam at the initiation of the dwell time. Signals are received through the switched non-active beam, and samples of the received signals are generated. The samples are stored in a memory. Channel quality is measured using the samples, whereby the dwell time to measure the channel quality is minimized.
PCT/US2005/003476 2004-02-06 2005-01-28 Method and apparatus for measuring channel quality using a smart antenna in a wireless transmit/receive unit WO2005076903A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US54301204P 2004-02-06 2004-02-06
US60/543,012 2004-02-06
US11/026,296 US7274936B2 (en) 2004-02-06 2004-12-30 Method and apparatus for measuring channel quality using a smart antenna in a wireless transmit/receive unit
US11/026,296 2004-12-30

Publications (2)

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WO2005076903A2 WO2005076903A2 (en) 2005-08-25
WO2005076903A3 true WO2005076903A3 (en) 2006-11-09

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US (2) US7274936B2 (en)
TW (2) TWI261982B (en)
WO (1) WO2005076903A2 (en)

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US20050181733A1 (en) 2005-08-18

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