Radio communications system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Sep 2, 2003
Grant Date -
N/A
app pub date -
Apr 8, 1999
filing date -
Apr 8, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A cell group is formed from three cells, each of which has a site equipped with antennas. The antennas differ from one another in terms of horizontal orientation and cover all horizontal directions. The cell groups are arranged in a repeating pattern such that a cell having a site assigned different frequency is interposed between cell groups assigned the same frequency, thereby constituting a minimum unit area to be repeated.
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Cited Art Landscape
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