Dual mode communication system, dual mode communication method and dual mode communication user equipment
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United States of America Patent
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Dec 7, 2010
Grant Date -
Oct 5, 2006
app pub date -
Jul 27, 2005
filing date -
Mar 29, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A dual mode communication system, with user equipment selectively connectable to a plurality of communication systems, for switching communication systems to which the user equipment should be connected, detects that the remaining battery level fell below a first threshold in the user equipment communicating over the W-CDMA system. In the system it is determined whether or not the user equipment can communicate using the GSM system, which can be operated with lower power consumption than the W-CDMA system. When it is determined that communication can be established with the GSM system, the system switches from a connection between the user equipment and the W-CDMA system to a connection between the user equipment and the GSM system without interrupting the communication over the W-CDMA.
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