System and method for time slotted code division multiple access communication in a wireless communication environment
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United States of America Patent
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Jun 13, 2006
Grant Date -
Sep 5, 2002
app pub date -
Dec 11, 2001
filing date -
Mar 1, 2001
priority date (Note) -
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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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