Method of efficiently processing dormant state in packet service and multi-mode terminal for the same

A multi-mode terminal, comprising:

• first and second modems supporting different communication services, for efficiently processing a dormant state in a packet service, the first modem for monitoring whether a communication state with a first communication network is bad in the dormant state if it is determined that the multi-mode terminal has entered into the dormant state during a packet service through the first communication network, requesting the first communication network to disconnect a packet call if the communication state with the first communication network is determined to be bad, and commanding the second modem to perform the packet service by connecting a packet call through a second communication network if the packet call with the first communication network is disconnected in response to the request;
• and
• the second modem for registering into the second communication network in response to the command of the first modem and performing the packet service by connecting the packet call to the second communication network if the registration succeeds.

A multi-mode terminal, comprising:

• first and second modems supporting different communication services, for efficiently processing a dormant state in a packet service, the first modem for monitoring whether the multi-mode terminal is located in a bad communication area in the dormant state if it is determined that the multi-mode terminal had entered into the dormant state during a packet service in a first communication network mode, and commanding the second modem through a communication path, which couples the first and second modems, to perform location registration in a second communication network if it is determined that the multi-mode terminal is located in a bad communication area;
• and
• the second modem for performing the location registration in the second communication network in response to the command of the first modem and performing a second communication network mode if the location registration succeeds.