Method for assigning channels based on spatial division...

Details Method for assigning channels based on spatial division... Method for assigning channels based on spatial division...

2004-11-15

2008-01-15

Le, Danh (Department: 2617)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S334000, C370S208000, C455S562100, C455S101000

Reexamination Certificate

active

07319685

ABSTRACT:
A method for assigning a single frequency sub-channel to a plurality of MSs (Mobile Stations) in an OFDM (Orthogonal Frequency Division Multiplexing) system utilizing SDM (Spatial Division Multiplexing) with multiple transmit/receive antennas. In the method, a BS (Base Station) can effectively assign a pilot channel to estimate a downlink channel. The BS divides the single frequency sub-channel into a plurality of spatial channels, and sequentially assigns the plurality of spatial channels to the MSs having the maximum communication capacity, thereby transmitting signals of the MSs through the single frequency sub-channel.

REFERENCES:
patent: 2002/0158801 (2002-10-01), Crilly et al.
patent: 2002/0177447 (2002-11-01), Walton et al.
patent: 2003/0076777 (2003-04-01), Stuber et al.
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patent: 2004/0081131 (2004-04-01), Walton et al.
patent: WO 01/76110 (2001-10-01), None
patent: WO 02/49306 (2002-06-01), None

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