Appeal No. 2002-1617
Application No. 08/752,020
being directed to allowable subject matter and are not here
before us on appeal.
The invention is directed to a time-multiplexed short
message acknowledgment system.
Independent claim 1, reproduced as follows, is
representative:
1. A method of communicating access requests and short
message acknowledgments in a radiotelephone communications system
including a central station and a plurality of radiotelephones
communicating over a plurality of carrier frequency bands, the
radiotelephone communications system including a short message
service (SMS) for communicating short messages from the central
station to the plurality of radiotelephones, the method
comprising the steps:
communicating access requests from the plurality of
radiotelephones to the central station over a random access
channel carrier (RACH) frequency band during a first RACH message
time window, the access requests representing requests for access
to the radiotelephone system, such that communication of access
requests from the plurality of radiotelephones on the RACH
carrier frequency band is constrained to occur during the first
RACH message time window; and
communicating short message acknowledgments from the
plurality of radiotelephones to the central station over the RACH
carrier frequency band during a second RACH message time window,
such that communication of short message acknowledgments from the
plurality of radiotelephones on the RACH carrier frequency band
is constrained to occur during the second RACH message time
window.
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