Multiplex communications – Communication over free space – Combining or distributing information via code word channels...
Reexamination Certificate
2005-03-22
2005-03-22
Appiah, Charles (Department: 2686)
Multiplex communications
Communication over free space
Combining or distributing information via code word channels...
C370S335000, C370S348000, C370S441000
Reexamination Certificate
active
06870824
ABSTRACT:
A CDMA communication system transmits packet data via a designated forward channel which uses a particular spreading code, in the case where a base station has the packet data to send to a mobile station while the mobile sation does not have a dedicated channel established. A base station includes a first channel transmitter for transmitting a control message including information representative of a spreading code for designating a specific forward common channel to a specific mobile station, to the mobile station via a forward common channel, and a second channel transmitter for spreading user data with the spreading code upon reception of a response to the control message and transmitting the spread user data. A mobile station includes a control message analyzer for analyzing a message including information representative of a designated spreading code received via a forward common channel, and a forward common channel receiver for despreading user data spread with the designated spreading code generated based on the information, using the spreading code.
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Kim Sun-Mi
Kim Young-Ky
Moon Hi-Chan
Appiah Charles
Dilworth & Barrese LLP
Samsung Electronics Co,. Ltd.
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