Appeal No. 1999-0084
Application No. 08/448,854
Toriyama discloses a cordless telephone system (Figure 1)
that expands the service area of base unit 1A via the use of
base relay units 1B and 1C. Although handset 2B1, for
example, is out of the normal service area 4A of base unit 1A,
a call can reach 2B1 from base unit 1A via the radio link
between base unit 1A and handset 2A1, the wired link between
the handset 2A1 and base relay unit 1B, and the radio link
between base relay unit 1B and handset 2B1. According to the
examiner (answer, page 4), “it would have been obvious to one
of ordinary skill in the art at the time the invention was
made to modify the method of handover of Menich et al. in view
of Mack by including transceiver units shared by a plurality
of overlapping cells which transmit and receive signals at
frequencies assigned to the cells as shown by Toriyama in
order to create a larger overlapping region in which mobile
stations are handed over and to prevent the signal strength of
the cells from dropping below a predetermined level in the
overlapping region.”
Appellants argue (brief, page 6) that:
Because the disclosed remote stations [in Mack] are
stationary, one of ordinary skilled [sic] in the art
would have no motivation to rely on the teaching of
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