Method for mode switching between systems in multi-mode mobile terminal
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United States of America Patent
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N/A
Issued Date -
Feb 16, 2006
app pub date -
Jul 18, 2005
filing date -
Jul 22, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A multi-mode mobile terminal in an idle state switches between a CDMA system mode and a WCDMA system mode. If the intensity of a WCDMA signal is maintained below a threshold value for longer than a predetermined period in a WCDMA idle state, the acquisition of the CDMA system is attempted, and a WCDMA modem is deactivated if the acquisition of the CDMA system mode was successful. Alternatively, the acquisition of the WCDMA system is attempted at regular intervals in a CDMA idle state, and a CDMA modem is deactivated if the acquisition of the WCDMA system was successful. At least any one of the two modes can be maintained in an activated state when a mode is switched into another mode so that the duration of an interruption of service can be minimized.
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