Wireless date terminal and network changing-over method thereof

Abstract

The invention relates to a different-network dual-number data card system and a seamless changing-over method thereof. An EVDO module and a WiMAX module are controlled by a USB-HUB for realizing that when the signal of the WiMAX module varies the difference, the WiMAX module is changed to the EVDO module; and during the changing-over process, the network of the data business of the application layer of the users is not broken off, and vice versa. The scheme is capable of getting the signal strength of the two modules at all times, and controlling the working states of the two modules reasonably during the changing-over process. The invention is capable of realizing the seamless changing-over function of the different-network dual-number data card, and realizing the dual-mode and dual-standby function from the angle of the user experience, thus greatly improving user experience of the different-network dual-number data card, and lowering the development cost of the terminal manufacture. During the changing-over process, the invention ensure that the power of the whole data card is not over large for avoiding the hanging died of the USB interface, thus well resolving the contradict between the power consumption of the data card and the changing-over continuity.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a wireless data terminal and a network switching method thereof. Background technique [0002] In recent years, the integration of mobile communication technologies (GSM / GPRS / EDGE, WCDMA / HSDPA / HSUPA / HSPA+, CDMA 1X EVDO, etc.) and broadband wireless access technologies (WIFI, WiMAX, etc.) Colorful wireless communication experience. But at the same time, the variety of network types and their incompatibility have also brought a lot of troubles to users and telecom operators. To use networks of different network standards, users need to carry data cards suitable for different network standards; the ongoing services of users cannot be continuously switched between different networks; operators need to discuss how to integrate network resources and reduce operating costs , Improving customer satisfaction is a big headache. To solve these problems, inter-technology ha...

AI Technical Summary

Problems solved by technology

[0003] In the above-mentioned combination of mobile communication technology and broadband access technology, operators have increasingly strong demand for WiMAX / EVDO dual-mode dual-standby data cards, and the common WiMAX / EVDO dual-mode dual-standby data cards in the market are often A series of problems are caused by power consumption: for the most common USB interface data card, the power consumption of the entire data card cannot exceed 2.5W (USB2.0 supports up to 500mA*5V=2.5W), especially in dual-mode During the switching process of the data card, in order to achieve seamless switching (the application layer program is not disconnected), the two modules of WiMAX and EVDO need to be connected at the same time. stop working

To avoid this problem, the current WiMAX / EVDO dual-mode data card can only be made into dual-mode single-standby, or dual-mode dual-standby, but the switching process cannot be seamless, and the user's data service will be significantly interrupted

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