MOBILE PHONE AND COMMUNICATION SYSTEM SWITCHING METHOD
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United States of America Patent
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Issued Date -
Sep 20, 2012
app pub date -
Jun 10, 2011
filing date -
Mar 17, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A mobile phone includes two different communication systems and a current table storing relationship between signal transmission power and current in relation to the two different communication systems. The mobile phone obtains two received signal strength indications (RSSI) in relation to the two different communication systems if the mobile phone requires the voice call service, and then calculates two signal transmission power in relation to the two communication system according to the two RSSI. The mobile phone searches a current table to obtain two current according to the two signal transmission power. The mobile phone compares the two current to select one of the two communication systems which needs a smaller one of the two current to provide the voice call service.
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