HANDOVER METHOD FOR MINIMIZING PACKET CALL RECONNECTION DELAY TIME BETWEEN DIFFERENT MOBILE COMMUNICATION SCHEMES AND MULTI-MODE TERMINAL FOR THE SAME

摘要

A multi-mode terminal having first and second modems supporting different communication services and method for performing a handover thereof are provided. The method includes receiving, by the first modem, a message including starting condition for handover to a second communication network, wherein the condition is defined by a first communication network; determining, by the first modem, whether the starting condition for handover in the received message is satisfied; if the starting condition for handover in the received message is satisfied, receiving by the second modem, a command from the first modem to handover to the second communication network; and registering, by the second modem, into the second communication network in response to the command of the first modem, and connecting to the second communication network to perform communication.

主权项

1. A method of handover for a multi-mode terminal having first and second modems supporting different communication services, the method comprising the steps of:
receiving, by the first modem, a message including starting condition for handover to a second communication network, wherein the condition is defined by a first communication network; determining, by the first modem, whether the starting condition for handover in the received message is satisfied; if the starting condition for handover in the received message is satisfied, receiving by the second modem, a command from the first modem to handover to the second communication network; and registering, by the second modem, into the second communication network in response to the command of the first modem, and connecting to the second communication network to perform communication, wherein the first modem determines whether a measurement control message comprising a measurement report condition is received from the first communication network, monitors whether a state of the communication service through the first communication network satisfies the measurement report condition contained in the measurement control message, and transmits a measurement report message to the first communication network if the measurement report condition is satisfied.