System and method to combine power control commands during soft handoff in DS/CDMA cellular systems
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United States of America Patent
Stats
-
Jul 31, 2001
Grant Date -
N/A
app pub date -
May 19, 1999
filing date -
Dec 11, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Mobile stations in communication with several base stations in a cellular CDMA system (as when undergoing soft handoff) do not use the conventional 'or of the downs' rule for assessing power control commands from base stations. Mobile stations assess the link quality of the links from the base station. If any base station displays link quality above a predetermined threshold and if that base station is requesting power reduction, power is reduced by a predetermined amount, delta. Otherwise, power is adjusted up or down by an amount less than or equal to delta according to the received power control signals from each base station in conjunction with a weight determined from the signal quality of the link from each base station.
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