WIRELESS BROADBAND DATA CARD SUPPORTING ACCESSING NETWORK IN 3G AND WI-FI MANNERS

摘要

The present document discloses a wireless broadband data card which supports accessing a network in 3G and Wi-Fi modes. The wireless broadband data card is connected to a terminal through a USB interface, including: a USB device controller, a USB device driving module, an IP packet and Ethernet frame conversion module, a 3G access module, a dynamic host configuration protocol (DHCP) server activation module, and a Wi-Fi access module. By adopting the present document, the 3G access function and the Wi-Fi access function are integrated in one data card; on the one hand, the data card is convenient to carry and easy to use, and has a low cost; on the other hand, a uniform NDIS driver is used as a uniform data transmission channel and medium, thereby greatly reducing the software development cost and maintenance cost.