Closed-loop transmitting antenna diversity method, base...

Details Closed-loop transmitting antenna diversity method, base... Closed-loop transmitting antenna diversity method, base...

2005-05-10

2005-05-10

Nguyen, Lee (Department: 2682)

Telecommunications

Receiver or analog modulated signal frequency converter

With wave collector

C455S275000, C455S276100, C455S277100, C455S562100, C375S144000, C375S148000

Reexamination Certificate

active

06892059

ABSTRACT:
A closed-loop transmitting antenna diversity method, and a base station and mobile station apparatus therefore in a next generation mobile telecommunications system, the closed-loop transmitting antenna diversity method having a plurality of antennas in a mobile telecommunications system, including the steps of (a) measuring the changed amount per unit time of the phase difference between antennas for each of the plurality of antennas which are used in a base station; (b) transmitting the result of measuring as feedback information for adjusting transmitting antenna diversity; (c) receiving and interpreting feedback information in the base station; (d) calculating the weighted value of array antennas for each antenna, using the interpreted feedback information; and (e) multiplying data which is to be transmitted from the base station to a mobile station by the array antenna weighted value, and outputting the result through a corresponding antenna. Here, the changed amount per unit time of the phase difference between antennas is obtained by subtracting the previous phase difference between antennas which the base station knows from the phase difference between antennas which is calculated by a current mobile station.

REFERENCES:
patent: 5311555 (1994-05-01), Ichiyoshi
patent: 5450447 (1995-09-01), Dutta
patent: 5471647 (1995-11-01), Gerlach et al.
patent: 5634199 (1997-05-01), Gerlach et al.
patent: 5719899 (1998-02-01), Thielecke et al.
patent: 6002947 (1999-12-01), Smith
patent: 6385181 (2002-05-01), Tsutsui et al.
patent: 0 807 989 (1997-11-01), None
patent: 0 923 203 (1999-06-01), None
patent: 0923203 (1999-06-01), None
patent: 0 923 203 (1999-06-01), None

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