Patent ID: 8068446

Claim:
A method of processing a dormant state in a packet service, which is performed by a multi-mode terminal comprising first and second modems supporting different communication services, the method comprising: if it is determined that the multi-mode terminal has entered into the dormant state during a packet service through a first communication network, determining whether a command received from the first communication network corresponds to a command for connecting a packet call to a second communication network, requesting the first communication network to disconnect the packet call when it is determined that the command received from the first communication network corresponds to the command for connecting the packet call to the second communication network, monitoring whether an intensity of a signal of a communication state with the first communication network falls below a threshold value in the dormant state during a predetermined period when it is determined that the command received from the first communication network does not correspond to the command for connecting the packet call to the second communication network, wherein the dormant state is a state in which an application using the packet service is operating but not transmitting or receiving data to or from the first communication network; setting a count value if it is determined that the intensity of the signal during the predetermined period is less than the threshold; if the count value is equal to a threshold counting value, requesting the first communication network to disconnect the packet call; when it is determined that if the packet call with the first communication network is disconnected, turning on the second modem, by the first modem, through a communication path coupling the first and second modems; determining whether registration between the second modem and the second communication network succeeds; and if the registration succeeds, connecting a packet call to the second communication network by the second modem.