Appeal 2007-1415
Application 09/795,704
teachings clearly establishing that integrating packet and circuit modes of
operation is well known.
In any event, even with Mazur’s preferred embodiment, Mazur hardly
discards the idea of integrating packet and circuit switched modes as
Appellants seem to suggest. On the contrary, Mazur notes that if it is
possible to provide a GPRS system without a GSM circuit mode, it will also
be possible to introduce the GPRS system in other circuit switched system
environments. According to Mazur, migrating to a system with TDMA/136
as a circuit switched mode and GPRS as a packet switched mode will
become more straightforward (Mazur, col. 7, ll. 57-63). In our view, this
teaching only bolsters the Examiner’s position that combining packet and
circuit stacks in Rydbeck would have been within the level of the skilled
artisan.
We further note that Figure 8 of Mazur also strongly suggests
integrating packet and circuit switched modes. The figure illustrates a
GPRS system integrated with a TDMA/136 system according to different
embodiments of Mazur’s invention (Mazur, col. 4, ll. 59-61). As shown in
Figure 8, the upper portion corresponds to a TDMA/136 system part and the
lower portion corresponds to a GPRS system part. Significantly, the
accompanying discussion indicates that several of the functional nodes in the
TDMA/136 mode or system part can be co-located or integrated with the
functional nodes in the GPRS mode or system part (Mazur, col. 9, ll. 24-33).
But perhaps most significant is the depiction of a dual mode terminal
in Figure 8. As shown in the figure, the terminal has a wireless connection
with both the TDMA/136 and GPRS system parts. From this depiction
alone, the skilled artisan would readily understand that providing a single
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