Appeal No. 1999-1109
Application No. 08/359,904
(sic) determined by sensing the rate at which the radio
telephone moves across cell boundaries, as taught by Shiotsuki,
et al in the radio telephone and method of Chia in view of
Schellinger, et al in order to effectively control the time
interval of issuing handoff request.” Appellant argues, brief
at page 15, that “[t]here is no velocity sensing means in
Shitsuki [sic, Shiotsuki] et al. Shitsuki [sic, Shiotsuki] et
al. merely uses a level crossing rate to delay a handoff. There
is no disclosure or suggestion in Shitsuki [sic, Shiotsuki] al.
of using a level crossing rate to sense velocity that is
subsequently used to select between two radio telephone
systems.” We disagree with Appellant’s position. Figure 4 of
Shiotsuki shows that a high rate of level crossing would give
rise to a short time interval of handoff requested signals,
which would correspond to the mobile station moving at a faster
speed, because in a fast moving speed, the handoff has to be
given at a fast rate as the contact with the base stations has
to be made from one region to the next. See column 5 lines, 36-
48. Therefore, we sustain the obviousness rejection of claims
3-5 and 14 over Chia, Schellinger and Shiotsuki.
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