The Design And Practice Of3G Wireless Router

With CDMA2000, WCDMA, TD-SCDMA as the representative of the third generation mobile communication technology, can transmit voice and broadband data, currently in the country to obtain a wide range of deployment. Wireless hotspot, refers to the provision of wireless LAN (WLAN) access equipment Internet services. Using3G or4G hotspot backhaul equipment to meet the car mobile environment, wired difficult to reach, or wired and wireless backup achieve high availability and other scenes, with broad applications.This paper studies the realization of having3G enabled wireless hotspot network access device, to achieve conversion3G signal and WiFi signals, while achieving things gateway functionality provides an Ethernet port, serial port, USB and other interfaces, protocol conversion. Papers on the device hardware, software design and implementation, and test validation. Hardware section details with RT3050chip as the core of various external devices, completed the circuit design. Part of the analysis software introduces my work involved in the project, including the environmental establishment, Bootloader implementation of embedded Linux build and drivers and application software content. Meanwhile, as a commercial product, the paper gives the test methods and test results of this device.