Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2008-01-01
2008-01-01
Chan, Wing (Department: 2616)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S343000, C455S436000
Reexamination Certificate
active
10168601
ABSTRACT:
The object of the invention is a method for changing the frequency band used by a mobile station in a mobile station system. The invention is based on the idea that instead of using a fixed threshold value to change the frequency band, it is replaced with a variable threshold value in connection of a failed attempt to change the frequency band. The variable threshold value is based on the signal levels measured on both frequency bands and used to obtain the new threshold value. A fresh attempt to change the frequency band is made applying the new threshold value.
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