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

摘要

Provided is a method for saving power of a portable device that exists in a location where a fixed telephone network is available, the method including transferring a mobile communication network-based call connection request message transmitted to the portable device into a fixed telephone network-based call connection request message; and receiving the transferred call connection request message in a fixed telephone network support communication module included in the portable device, and forming a fixed telephone network-based call channel in place of the mobile communication network based call.

主权项

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.