Method and apparatus for down-link feedback multiple antenna...

Details Method and apparatus for down-link feedback multiple antenna... Method and apparatus for down-link feedback multiple antenna...

2007-06-26

2007-06-26

Ramos-Feliciano, Eliseo (Department: 2609)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S335000, C455S355000, C375S267000

Reexamination Certificate

active

10434251

ABSTRACT:
An apparatus and method for down-link multiple-antenna transmission in a wireless communication system is provided wherein a base station section comprises: a down-link specific physical channel unit, a second common pilot channel unit, a beam weighting unit of common pilot channels, a multiplexing and summing unit, a down-link specific physical channel weighting unit, a specific physical channel and second common pilot channel multiplexing unit, an antenna array unit, a multiple-beam weight vector set unit, up-link specific physical channels, and a feedback bit information unit; and a service cell section or mobile station section comprises: an antenna unit, a channel evaluating unit, a beam selection unit, and a beam quantizing unit. The space characteristics of the physical channels are utilized reasonably. Accordingly, a beam gain is obtained, interference is suppressed effectively, and the apparatus is easy to operate.

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patent: WO 99/67962 (1999-12-01), None
patent: WO 00/51265 (2000-08-01), None

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