Method for minimizing current consumption at handover in multimode terminal and terminal for use in the same
First Claim
1. A method for minimizing current consumption in a multimode terminal, which includes first and second modems supporting different communication services, when a handover is performed, the method comprising:
- detecting, by the first modem operating in a first communication mode, a time point of the handover according to a signal from a first communication network and then transmitting a detection result;
receiving a Handover from Universal Mobile Telecommunications System Terrestrial Radio Access Network (UTRAN) Command to the first modem in response to transmission of the detection result; and
powering on, by the first modem, the second modem through a communication path interconnecting the first and second modems to switch the second modem to a second communication mode in which communication is performed through a second communication network.
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Accused Products
Abstract
A method and a multimode terminal for minimizing current consumption and simultaneously reducing a handover processing time when a handover occurs between communication networks which provide communication services using different mobile communication technologies. The communication network modems of the multimode terminal are interconnected via a one-to-one communication path, so that a handover target communication network modem is powered on only when handover actually occurs. In this way, by efficiently determining a time point when the handover target communication network modem is powered on, a processing time according to the occurrence of handover can be reduced, and additional current consumption can be minimized.
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Citations
11 Claims
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1. A method for minimizing current consumption in a multimode terminal, which includes first and second modems supporting different communication services, when a handover is performed, the method comprising:
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detecting, by the first modem operating in a first communication mode, a time point of the handover according to a signal from a first communication network and then transmitting a detection result;
receiving a Handover from Universal Mobile Telecommunications System Terrestrial Radio Access Network (UTRAN) Command to the first modem in response to transmission of the detection result; and
powering on, by the first modem, the second modem through a communication path interconnecting the first and second modems to switch the second modem to a second communication mode in which communication is performed through a second communication network. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A multimode terminal for minimizing current consumption when handover is performed between different communication networks, the terminal comprising:
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a first modem for detecting a time point when handover conditions are satisfied and transmitting a detection result to a first communication network while operating in a first communication mode, and powering on a second modem through a communication path interconnecting the first and second modems if a Handover from Universal Mobile Telecommunications System Terrestrial Radio Access Network (UTRAN) Command is received in response to transmission of the detection result; and
the second modem for attempting to acquire a second communication network if powered on according to the first modem'"'"'s instructions, and performing a second communication mode through the acquired second communication network. - View Dependent Claims (8, 9, 10, 11)
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Specification