Method and apparatus for a dual-network terminal to perform communication

摘要

An apparatus for performing communication by a dual-network terminal is disclosed by the present invention, wherein the dual-network terminal is a dual-network and dual-standby terminal, and the dual-network and dual-standby terminal comprises an application subsystem, a 3G wireless communication subsystem, a 2G wireless communication subsystem and an identification card management module. The identification card management module is connected with an identification card, which stores information used for the 2G network and 3G network to perform identity authentication, and the 3G wireless communication subsystem is connected with the application subsystem and the identification card management module, and the 2G wireless communication subsystem is connected with the application subsystem and the identification card management module. A method for performing communication by a dual-network terminal is also disclosed by the present invention. The invention is beneficial to the design of hardware and structure, thus saving the cost.

主权项

1. A method for performing communication by a dual-network terminal, characterized in that the dual-network terminal is a dual-network and dual-standby terminal, and the dual-network and dual-standby terminal comprises: an application subsystem, a 3G wireless communication subsystem, a 2G wireless communication subsystem and an identification card management module, and the identification card management module is connected with an identification card, which stores information used for 2G network and 3G network to perform identity authentication, and the 3G wireless communication subsystem is connected with the application subsystem and the identification card management module, and the 2G wireless communication subsystem is connected with the application subsystem and the identification card management module, and the method comprises:
the identification card management module reading and storing the information in the identification card; the 2G wireless communication subsystem reading the information of the identification card in the identification card management module, and communicating with the 2G network by using the read information; the 3G wireless communication subsystem reading the information of the identification card in the identification card management module, and communicating with the 3G network by using the read information; when a subscriber of the dual-network duel-standby terminal initiates a service, the application subsystem selecting a network according to type of the service, and when the initiated service is a Packet Switching (PS) service or a video phone service in a Circuit Switching (CS) service, the application subsystem selecting the 3G network, and when the initiated service is the CS service except for the video phone service, the application subsystem selecting the 2G network; when the selected network meets a condition of signal intensity, a wireless communication subsystem corresponding to the selected network performing communication through the selected network; when the initiated service is the PS service and the application subsystem selects the 3G network, if the application subsystem determines that the PS service cannot be initiated according to the signal intensity of current 3G network monitored by the 3G wireless communication subsystem, notifying the 2G wireless communication subsystem to activate a 2G data link of the 2G network to initiate the service; when the initiated service is the PS service, in a process of the 3G wireless communication subsystem performing communication through the 3G network, if the application subsystem determines that the signal intensity of the current 3G network is reduced to an extent that the PS service cannot be borne according to the signal intensity of the current 3G network monitored by the 3G wireless communication subsystem, the application subsystem notifying the 3G wireless communication subsystem and the 2G wireless communication subsystem to switch a Packet Data Protocol (PDP) data link corresponding to the PS service from a 3G data link to the 2G data link; and when the 2G wireless communication subsystem performs the PS service by using the 2G data link, if the application subsystem determines that the signal intensity of the current 3G network is increased to an extent that the PS service can be borne according to the signal intensity of the current 3G network monitored by the 3G wireless communication subsystem, the application subsystem notifying the 3G wireless communication subsystem and the 2G wireless communication subsystem to switch the PDP data link corresponding to the PS service from the 2G data link to the 3G data link.