Method and apparatus for controlling transmissions of a communications system
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United States of America Patent
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-
Jun 1, 2004
Grant Date -
Jul 3, 2003
app pub date -
Oct 23, 2002
filing date -
Mar 30, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
In some aspects, each cell in the communications system can be designed to operate in accordance with a set of back-off factors that identify the reductions in peak transmit power levels for the channels associated with the back-off factors. The back-off factors are defined to provide the required power to a large percentage of the users while reducing the amount of interference. In some other aspects, the cells operate using an adaptive reuse scheme that allows the cells to efficiently allocate and reallocate the system resources to reflect changes in the system. A reuse scheme is initially defined and resources are allocated to the cells. During operation, changes in the operating conditions of the system are detected and the reuse scheme is redefined as necessary based on the detected changes. In yet other aspects, techniques are provided to efficiency schedule data transmissions and to assign channels to users.
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