Multiplex communications – Communication over free space – Combining or distributing information via code word channels...
Reexamination Certificate
2006-06-13
2006-06-13
Pham, Chi H. (Department: 2667)
Multiplex communications
Communication over free space
Combining or distributing information via code word channels...
C370S348000, C455S403000
Reexamination Certificate
active
07061898
ABSTRACT:
A method and apparatus for assigning a time slotted code division multiple access carrier for wireless reverse link communication between a device and a base station. One or more performance characteristics corresponding to the device are determined. A code division multiple access spreading code is assigned based on the determined performance characteristics. A time slot for communication with the base station is assigned based on the assigned spreading code. According to one aspect, the assigned spreading code corresponds to one of an SCDMA code and an ACDMA code such that a time slot corresponding to an SCDMA code provides a time slot in which all devices are preferably in time-aligned orthogonal communication with the base station. An increase in channel gain and an increase in channel capacity result as compared with a system where time slots support mixed ACDMA and SCDMA codes.
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Earnshaw Mark
Fituri Eman A.
Hashem Bassam M.
Boakye Alexander O.
Christopher & Weisberg P.A.
Nortel Networks Limited
Pham Chi H.
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