Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1998-02-26
2000-04-18
Bost, Dwayne D.
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455434, 455 671, H04Q 720
Patent
active
060525851
ABSTRACT:
When a mobile communication terminal unit is using a particular one of a plurality of systems, the mobile communication terminal unit determines whether or not there is a higher priority system than the current system (at step 102). When there is a higher priority system, just before starting monitoring the higher priority system, the mobile communication terminal unit informs the current base station of the monitoring process for the higher priority system and requests the base station to suspend a call to be sent to the mobile communication terminal unit (at step 103). The mobile communication terminal unit monitors the higher priority system and records the monitored result (at step 104). After having monitored the higher priority system (at step 105), the mobile communication terminal unit informs the current base station of the restoration to the current system and requests the base station to cancel the suspension of a call to the mobile communication terminal unit (at step 106).
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Bost Dwayne D.
Gelin Jean A.
NEC Corporation
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