Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2005-07-27
2010-12-07
Phan, Huy (Department: 2617)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C370S311000, C455S550100, C455S574000
Reexamination Certificate
active
07848776
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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Akiba Takanobu
Yamano Osamu
Fujitsu Limited
Fujitsu Patent Center
Phan Huy
Wang-Hurst Kathy
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