Method and apparatus for hand-off of call in progress
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United States of America Patent
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-
Nov 19, 1991
Grant Date -
N/A
app pub date -
Mar 11, 1988
filing date -
Mar 31, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for a hand-off of a call-in-progress according to the present invention is arranged such that both a first ratio of a length of time, in which a measured value of SNR is below a predetermined 'threshold' to a total length of the measuring time, and a second ratio of a length of time, in which a measured value of RSSI is below a predetermined 'threshold', to a total length of the measuring time are detected and that the first ratio functions mainly when the 'threshold' of RSSI is predetermined to a relatively low value; and the second ratio functions mainly when the 'threshold' of RSSI is predetermined to a relatively high value, thereby optimizing the hand-off timing.
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