05203010 is referenced by 117 patents and cites 5 patents.

A cellular radiotelephone system transfers a call from a source base-site (200) to one target base-site (205,210). A source base-site (200) in the first RF coverage area (100) measures the signal strength (RSSI.sub.S) of a mobile (225), provides a forecasted signal strength (RSSI.sub.F) representing a would-be power increase of the mobile (225) and sets up two time windows. The source base-site (200) sends the measured and forecasted signal strengths to candidate target base-sites (205,210) found by the mobile (225) which measure the mobile (225) signal strength (RSSI.sub.T) and compare it once to RSSI.sub.S plus a hysteresis value. If RSSI.sub.T is greater than RSSI.sub.S, the call is transferred to the best responding cell. If RSSI.sub.T is below RSSI.sub.S, RSSI.sub.T is compared to RSSI.sub.F. During this time, the mobile 225 will increase power at the end of the first time window. If RSSI.sub.T is ever greater than RSSI.sub.F at any of the candidate target base-sites (205,210), the call is transferred to the responding target base-site (205,210). If the source base-site (200) receives no responses during the second time window, the process ends.

Title
Radio telephone system incorporating multiple time periods for communication transfer
Application Number
7/612292
Publication Number
5203010
Application Date
November 13, 1990
Publication Date
April 13, 1993
Inventor
Thomas G Hulsebosch
Palatine
IL, US
Scott A Hardman
Island Lake
IL, US
Thomas B Hart
Palatine
IL, US
Alton P Werronen
Palatine
IL, US
Kenneth A Felix
Crystal Lake
IL, US
Agent
Raymond J Warren
Raymond A Jenski
Richard A Sonnentag
Assignee
Motorola
IL, US
IPC
H04Q 7/00
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