Appeal No. 2002-1043
Application 08/784,860
specification. Power conservation in mobile terminals is
important to achieve a reasonable service battery life. See
pages 1 and 2 of Appellants’ specification. Appellants’
invention is to provide two data rates for receiving messages at
the mobile terminals. Appellants have discovered that by using a
first data rate being higher than the second data rate for
receiving messages at the mobile terminal, the capacity and
network can be increased without requiring a short range, or
higher power transmission capability in the mobile terminal. See
page 3 of Appellants’ specification.
Figure 2 shows a wireless communication network 200. In
Figure 2, wireless communication network 200 includes a number of
mobile terminals 201a through 201f, and a number of base
stations, 202a through 202i. The data rate for the uplink
messages which is transmitted from the mobile terminal to a base
station remains at a lower data rate, e.g. 2400 baud, while the
downlink messages sent to the mobile terminal by transmitter 203
or base stations 201a through 201i are sent at a much higher
rate, e.g. 9600 baud. An initial control message from a base
station will be sent to a mobile terminal at a rate less than
9600. This initial control message may specify to the mobile
terminal the higher data rate for reception. See page 5 of
2
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