Method and apparatus for initiating a reverse link intergenerational handoff in a CDMA communication system
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United States of America Patent
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Jul 4, 2006
Grant Date -
N/A
app pub date -
Oct 12, 2000
filing date -
Oct 12, 1999
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method and apparatus for initiating a reverse link intergenerational handoff in a CDMA communication system that measures and compares parameters between a serving base station of one generation and a target base station of another generation to determine the best possible handoff initiation time instant for performing a reverse link intergenerational hard handoff. Different embodiments can utilize one of several procedures to determine the best possible handoff initiation time instant. A pilot signal strength embodiment determines a handoff initiation time instant based upon the total pilot signal strength of both a serving and target base station. An E.sub.b/N.sub.t embodiment determines a handoff initiation time instant based upon E.sub.b/N.sub.t (ratio of average power per bit to total received power spectral density) values of both a serving and a target base station. The method and apparatus decreases the probability of degraded or dropped calls during intergenerational handoffs.
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