Appeal No. 1998-0101
Application No. 08/253,996
determining and updating cell boundary with fuzzy logic, the
use of received signal strength is a key factor. Cell
boundary is the point at which signal strength is equal from
adjacent base station units. Signal strength is measured and
applied to fuzzy logic to determine cell boundary.
With respect to the fuzzy logic being based on a “site
preference indicator,” we find no such teaching in Kinoshita.
One preference found in Kinoshita is the determination of
which mobile unit will be given preference in hand-off (column
5, lines 61-65). However, fuzzy logic is not based on this
preference, and this preference is not a site preference, but
rather a hand-off preference among mobile units. Hurst does
base site preference upon a site preference indicator,
however, there is no mention of using fuzzy logic in Hurst.
The use of fuzzy logic, as disclosed in Kinoshita, with the
site preference indicator of Hurst, is central to the issue of
combinability as argued by Appellants.
Appellants argue “It is well established that a proposed
modification cannot change a principle of operation of a
reference. If Kinoshita was modified by Hurst as suggested by
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