Method and apparatus for performing soft hand-off in a wireless communication system
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United States of America Patent
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-
Apr 25, 2000
Grant Date -
N/A
app pub date -
Jul 21, 1997
filing date -
Jul 21, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
At the mobile station the measured pilot energy of each pilot in the candidate set is iteratively compared against a threshold generated in accordance with the sum of the energies of the pilots in the active set. If the strongest pilot in the candidate set satisfies this threshold condition, it is added to the revised active set. A second iterative process is performed to determine whether a pilot should be deleted from the revised active set. The mobile station determines whether a change to the current active set is desirable by measuring the energies of the pilots in the active set and the candidate set, and dynamically adjusting the necessary thresholds based on its own estimation of the communication environment.
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