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Method and system of power saving and portable device using the same

  • US 9,185,192 B2
  • Filed: 09/01/2010
  • Issued: 11/10/2015
  • Est. Priority Date: 09/28/2009
  • Status: Expired due to Fees
First Claim
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1. A method for performing communications in a portable device having a first module adapted for communications over a mobile communication network and a second module adapted for communications over a fixed telephone network, the method comprising:

  • determining whether the portable device is located in a coverage area associated with the fixed telephone network by a predetermined period;

    activating the second module when the portable device is located in the coverage area;

    receiving, by the first module, a call connection request message from the mobile communication network while the portable device is;

    (i) registered with both the mobile communication network and the fixed telephone network, and (ii) located in the coverage area;

    refraining, by the first module, from conducting a call associated with the call connection request message;

    transmitting, by the first module, to the mobile communication network a call transfer message requesting the call connection request message to be transferred onto the second module; and

    when the call connection request message is received at the second module over the fixed telephone network, establishing, by the second module, the call over the fixed telephone network.

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