Appeal 2007-1603
Application 10/036,356
the teachings of Tiedemann, Jr. with respect to considerations of interference
are relevant to the power adjustment and signal quality.
Here, we agree with the Examiner that Tiedemann, Jr. discloses
various methodologies for changing the transmit power when there is a
change in the transmission quality beyond desired upper and lower
threshold(s). Clearly Tiedemann, Jr. discloses a recognition of interference
with signal transmission as a consideration for power levels for transmission
and that the two are interrelated as follows:
In an alternative continuous transmission strategy, if the data rate is
less than the predetermined maximum the data is repeated within the
frame such that the data occupies the full capacity of the data frame. If
such a strategy is employed, power consumption and interference to
other users may be reduced during periods of data transmission at less
than the predetermined maximum by reducing the power at which the
frame is transmitted. This reduced transmission power is compensated
by the redundancy in the data stream and can offer benefits in range
for a fixed maximum transmission power.
(Tiedemann, Jr. col. 2, l. 61-col. 3, l. 4). (Emphasis added.)
In a code division multiple access (CDMA) communication system,
the methods described herein have special significance, because by
reducing the transmission power to the minimum necessary for high
quality communications, the communication system provides less
interference to the transmissions of other users and allows an increase
in overall system capacity. In addition, in a capacity limited system,
the power reduction of transmission to one user allows another user to
transmit at a higher power level which may be necessary due to
differences in the propagation path or because that user is transmitting
at a higher data rate.
(Tiedemann, Jr., col. 3, ll. 27-38). (Emphasis added.)
In forward link transmissions being broadcast from base station 50 to
mobile station 30, it is beneficial to minimize the transmitted power
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