Power control of mobile station transmissions during handoff in a cellular system
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United States of America Patent
Stats
-
Aug 17, 1999
Grant Date -
N/A
app pub date -
Jun 5, 1997
filing date -
Jun 5, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method and apparatus for controlling the transmission power of a mobile station during handoff of a call between base stations of a cellular system A desired transmission power of a mobile station on an assigned traffic channel of a target base station is determined, and the transmission power of the mobile station is adjusted over a range of power values to be set to the desired transmission power level. The desired transmission power of the mobile station may be determined based on measurements made on the pilot channel of the target base station at the mobile station. Alternately, base station power classes may be defined for the cellular system so that each base station at which it is desired to receive mobile station transmissions at a signal level within a selected range is assigned to a power class associated with that selected range A mobile station involved in a handoff can determine the power level at which it should begin transmitting on a new traffic channel during handoff by determining the power class of the base station to which the new traffic channel is assigned.
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