Radio communication device and transmission antenna...

Details Radio communication device and transmission antenna... Radio communication device and transmission antenna...

2005-12-27

2005-12-27

Urban, Edward F. (Department: 2685)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S101000, C455S277100, C375S347000

Reexamination Certificate

active

06980833

ABSTRACT:
A determining circuit213of a mobile station measures the number of paths of a forward link. In a case where the number of paths is smaller than a threshold value, the determining circuit213determines that execution of an operation for changing an antenna is necessary. In the other case, the determining circuit213determines that execution of an operation for changing an antenna is unnecessary. A multiplexing circuit214multiplexes a control signal, which puts the determination result of determining circuit213thereon, into transmission data to be transmitted. In a base station apparatus, the control signal is separated from the received signal, and it is determined whether or not the operation for changing the antenna is executed. This makes it possible to execute the operation for changing transmission antenna only when reception quality is improved by changing transmission antenna, and to suppress execution of the change of transmission antenna to a minimum.

REFERENCES:
patent: 5671221 (1997-09-01), Yang
patent: 6400780 (2002-06-01), Rashid-Farrokhi et al.
patent: 6724828 (2004-04-01), Dabak
patent: 9219675 (1997-08-01), None
patent: 10117165 (1998-05-01), None
patent: 10163938 (1998-06-01), None
patent: 0137684 (1996-12-01), None
English translation of Korean Office Action.
Korean Office Action dated May 29, 2002.
English translation of Korean Office Action.

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